Vertical bilateral scissors cutter of heavy roll -turning metal sheet of hydraulic pressure

The utility model relates to a vertical bilateral scissors cutter of heavy roll -turning metal sheet of hydraulic pressure. The utility model discloses solve the technical problem that productivity ratio is low, the quality is poor, the structure is complicated and use cost is high that the bilateral shearing equipment of present metal sheet exists. The utility model provides a: a vertical bilateral scissors cutter of heavy roll -turning metal sheet of hydraulic pressure, it includes preceding conveying roller device and back conveying roller device, wherein: it still includes the laser scriber, magnetic force centering device, entry single driving formula pinch roll device, the vertical bilateral scissors cutter body of metal sheet, middle roller device founds the deflector roll with the export, the front end of conveying roller device is in the front established to the laser scriber, magnetic force centering device establishes the middle part of conveying roller device in the front, the ...

Method for measuring incident angle by virtue of linear-frequency-modulated double-beam laser heterodyne

The invention relates to a method for measuring an incident angle by virtue of a linear-frequency-modulated double-beam laser heterodyne, which relates to the field of engineering and solves the problems that the demodulation and modulation of a signal are complex, and the measurement accuracy is low because direction information of a movable reflector is required in an existing angle measurement method. The method is realized based on a device comprising a linear-frequency-modulated laser device, a first reflection mirror, a second reflection mirror, a convergent lens, a plane standard mirror, a photoelectric detector and a signal processing system. The method comprises the steps of receiving a light current I emitted by the photoelectric detector by virtue of the signal processing system in a measurement process, processing the light current I, carrying out Fourier transform to obtain a heterodyne signal frequency fIF in the light current, and obtaining the relation between a refraction ...

Lubricating device with automatic inflating and deflating structure and air chamber pressure oil tank

The invention discloses a lubricating device with an automatic inflating and deflating structure and an air chamber pressure oil tank. An oil tank upper cavity A is communicated with a two-position and three-way valve which is also provided with an interface which is communicated with the atmosphere. By adopting the structure, an oil inlet mode can be changed; and oil can be fully fed into an oil inlet of a lubricating pump and the capability of pumping grease is greatly improved. The lubricating device with the automatic inflating and deflating structure and the air chamber pressure oil tank comprises a lubricating pump casing, a power assembly, a lubricating pump, a cylindrical oil tank, a piston, a sealing ring and an automatic controller, wherein the power assembly and the lubricating pump driven by the power assembly are arranged on the lubricating pump casing; the cylindrical oil tank is fixedly connected with the lubricating pump casing; the cylindrical oil tank is separated into ...

GREASE PUMPING DEVICE

A grease pumping device includes a pump body, a driving mechanism, a plunger pair, a reversing valve and a lever mechanism; a switching action between each valve position of a valve core of the reversing valve is driven by the lever mechanism, an output rotating shaft drives a toggle member rotating therewith, and when the output rotating shaft rotates reciprocally in forward and reverse directions, the toggle member toggles the lever mechanism in the forward and reverse directions, such that the lever mechanism swings reciprocally; at least one of the lever mechanism and the toggle member is an elastic structure, when the output rotating shaft rotates, the toggle member contacts the lever mechanism and drives the valve core to operate, when the valve core is switched to a corresponding valve position, the toggle member and the lever mechanism slide relatively by elastic deformation of the elastic structure.

Lubricating equipment control method and system for judging blockage based on pressure change

The invention relates to a lubricating equipment control method and system for judging blockage based on pressure change. The aim of continuously and stably detecting the blockage fault of a lubricating pipeline can be achieved. The system comprises a timing unit, a pressure detection module, a temperature detection module, a storage unit and a processing unit, wherein the pressure detection module is arranged in an area away from a strong vibration area of mechanical equipment to be lubricated. When it is detected that the pressure in the pipeline of the lubricating equipment exceeds the overpressure pressure limit value, the lubricating equipment is controlled to stop oiling work, timing is started, the pressure change value in the pipeline of the lubricating equipment in unit time is detected and calculated, and the pressure change threshold value in the unit time during blockage at the temperature is obtained by looking up a table; the pressure change value is compared with a pressure ...

GREASE PUMPING DEVICE

A grease pumping device includes a pump body, a driving mechanism, a plunger pair, a reversing valve and a lever mechanism. A switching action between each valve position of a valve core of the reversing valve is driven by the lever mechanism. An output rotating shaft drives a toggle member rotating therewith, and when the output rotating shaft rotates reciprocally in forward and reverse directions, the toggle member toggles the lever mechanism in the forward and reverse directions, such that the lever mechanism swings reciprocally. At least one of the lever mechanism and the toggle member is an elastic structure, when the output rotating shaft rotates, the toggle member contacts the lever mechanism and drives the valve core to operate, when the valve core is switched to a corresponding valve position, the toggle member and the lever mechanism slide relatively by elastic deformation of the elastic structure.

Tea garden frost-proof method and frost-proof smoke generator

The invention provides a tea garden frost-proof method and a frost-proof smoke generator, and belongs to the technical field of late frost freezing disaster prevention in the fresh leaf picking stage of a tea garden. The frost-proof smoke generator is characterized in that the frost-proof smoke generator comprises a fuming system and an automatic temperature-control ignition system, can be connected with an atomizing system and is mainly used for making smoke between tea gardens and on other crops, so that the smoke spreads on tree crown surfaces; combustion-supporting agents and flame retardants serve as smoke generation sources, the smoke is purified through a filter, and mist of antifreeze or film-forming agents sprayed from an atomizer is also used, so that the frost-proof smoke generator has the advantages of being multi-freeze-proofing, high in heat efficiency and long in combustion time, having automatic temperature sensing functions and the like. The frost-proof smoke generator ...

Lubricating device with pneumatic tire pressure oil tank and oil tank lining

The invention relates to a lubricating device with a pneumatic tire pressure oil tank and an oil tank lining, which comprises a lubricating pump shell, a power assembly, a lubricating pump, a cylindrical oil tank, a piston and a seal ring, wherein the power assembly and the lubricating pump driven by the power assembly are arranged on the lubricating pump shell; the cylindrical oil tank is fixedly connected with the lubricating pump shell; the piston divides the cylindrical oil tank into an oil tank upper cavity A and an oil tank lower cavity B which are sealed mutually by the sealing ring; a retractable lining for storing oil is arranged in the oil tank lower cavity B; the periphery of an opening at the lower end of the lining is in fixed sealing connection with the periphery of an opening at the lower end of the oil tank lower cavity B, and the opening at the lower end of the lining is communicated with an oil inlet C of the lubricating pump; and a sealing pneumatic tire is arranged in ...

Model for predicting resilience of bar subjected to two roll straightening

The invention relates to a method for predicting resilience of a bar subjected to two roll straightening, and belongs to the technical field of two-roll straightening machines. The method comprises the followings steps: firstly, determining the offset of a stress neutral layer when the rod is subjected to straightening; then, determining a deformation-hardening coefficient and tension-compression stress distribution according to different straightening processes and deformation characteristics of rods in different specifications; finally, determining the model for predicting rebound bending moment and straightening rebound deflection by combining a pure bending and rebound theory, wherein the rebound deflection delta is related to the following variables of R, sigma, lambda, xi, psi, kappa, I, E, L, B, n, R0, Rw, P and tau; R represents a rod radius; sigma represents the yield limit; lambda represents a hardening coefficient; xi represents an elastic region ratio; psi represents a ...

Device For Automatically Placing Base Plate of Gear-Type Flattening Machine

Abstract of Descriptions The present invention relates to a device for automatically placing a base plate of a gear-type flattening machine, belongs to the technical field of a metallurgical apparatus, and is characterized in that the device includes a base device 1, a lateral shift device 2, a push device 3, a swing device 4, and an electromagnet 5. The device for automatically placing the base plate of the gear-type flattening machine of the present invention is mounted on left and right sides of a workbench IV of the flattening machine, respectively. The structure is completely the same. After the base plate III may be placed at any position on the workbench IV of the flattening machine at any angle by a combined action of the lateral shift device 2, the push device 3, and the swing device 4, the electromagnet 5 is powered off and the base plate III is placed. Similarly, after the electromagnet 5 may also be moved to the position of the base plate III by the combined action of the lateral ...

Structure for increasing rotating speed of swash plate pump

The invention provides a structure for increasing the rotating speed of a swash plate pump, which relates to the field of the rotating speed of swash plate pumps and comprises a wear-resistant mechanism, a filtering mechanism and a mechanism, wherein the wear-resistant mechanism is arranged on a driving shaft 1 to widen the rotating speed application range of a swash plate pump main body 7, and the filtering mechanism is arranged in the swash plate pump main body, is positioned at the front end of the driving shaft and is used for filtering and wiping before a pump body absorbs oil; the plunger cavity is arranged on the filtering mechanism, is linked with the filtering mechanism, is used for cleaning the surface of the filtering mechanism, adapts to wide-rotating-speed-range rotation of the swash plate pump main body through a static pressure supporting scheme and a mass center adjusting scheme, and can realize auxiliary oil suction of the plunger cavity through a low-pressure area and ...

A device that is used for farming laboratory to prevent that downcomer from blockking up

The utility model provides a device that is used for farming laboratory to prevent that downcomer from blockking up, belongs to laboratory paraphernalia technical field. It is including the shield groove, cartridge filter and the surge drum that connect gradually from top to bottom, the fixed separation net that sets up in shield groove bottom, the cartridge filter lateral wall on set up the apopore, surge drum bottom cooperation set up the fly leaf. The utility model discloses an advantage and effect: when article such as experiment bottle, bottle plug, centrifuging tube is washd in the farming laboratory, at first keep apart these little articles in the shield groove, both just with the washing, prevent to enter the downcomer again, secondly fluid deposit such as earth is in the surge drum, and the apopore of washing liquid on the lateral wall of cartridge filter flows in the downcomer, just in case on the lateral wall during apopore drainage not smooth, can net the drainage through the ...

Method and apparatus of impulse fluid jet type membrane bioreactor

The invention provides a method of a pulse-jet membrane bioreactor and a device for realizing the method. The method adopts a jet aerator to replace a traditional blower to realize the cross-flow scouring effect of membrane components; wherein, circulating fluid flows through the jet aerator at high speed; air enters the jet aerator in a pulse way by a valve controlled by PLC and jets at the bottom through a gas spreading distributor; the PLC system regulates the cross-flow state of gas-liquid two-phase flow on the membrane surface by changing circulation flow rate and pulse frequency, so as to improve the scouring effect of the air to the membrane surface, to further control membrane pollution, to improve the energy utilization efficiency of a circulating pump and to reserve energy. The use of the jet aerator also increases the utilization efficiency of oxygen and improves sludge degradation effect. The device has the advantages of low operation energy consumption and low operation noise ...

A filter tank

Refrigerator

The utility model relates to the technical field of household appliances, and discloses a refrigerator, which comprises a shell comprising a door frame, and a power supply connecting slot formed in the upper side edge of the door frame; a door body covering the door frame; the display screen is arranged on the upper side edge of the door body, and a power connecting plug is arranged at the position, corresponding to the power connecting slot, of the rear side. In the present application, the display screen is arranged on the upper side edge of the door body; a power supply connecting plug is arranged on the rear side of the display screen; a power supply connecting slot is formed in a position, corresponding to the power supply connecting plug, on the refrigerator; when the door body is closed, the power supply connecting plug can be inserted into the power supply connecting slot, so that power supply to the display screen is realized, the display screen can display normally without line ...

Lubricating device with air chamber pressure oil box

The invention relates to a lubricating device with an air chamber pressure oil box. The lubricating device comprises a lubricating pump shell, a power assembly, a lubricating pump, a cylindrical oil box, a piston and a sealing ring, wherein the power assembly and the lubricating pump which is driven by the power assembly are arranged on the lubricating pump shell; the cylindrical oil box is fixedly connected with the lubricating pump shell; by the sealing ring, the piston divides the cylindrical oil box into two parts, namely an oil box upper cavity A and an oil box lower cavity B; the oil inlet C of the lubricating pump is communicated with the oil box lower cavity B used for storing oil; the oil box upper cavity A is a sealed air chamber; and the oil box upper cavity A is connected with an air nozzle extending out of the upper part of the oil box upper cavity A. After the structure is adopted, the oil inlet way taking oil-suction as main of the oil inlet of the lubricating pump can be ...

Connecting device for connecting bar and top knife rest in hydraulic roll-turning metal plate shearer

A connecting device for connecting a connecting bar and a top knife rest in a hydraulic roll-turning metal plate shearer belongs to the technical field of metal plate shearer machine and is characterized in that the connecting bar inside a shearer transmission mechanism is of a Y structure, the Y type at the upper end is hinged with a hydraulic cylinder rod and a push rod, the lower end is hingedwith the top knife rest by a pin roll. A pin roll hole at the lower end of the connecting bar is provided with left and right eccentric sleeves, excircles and internal holesof the left and right eccentric sleeves do not share the same center, and half-brasses is installed between the lower end of the connecting bar and the top knife rest.

Bevel gear transmission plunger pump

The invention provides a bevel gear transmission plunger pump, which belongs to the technical field of plunger pumps, and comprises a pump body, a driving mechanism, a side wall arranged on the pump body, and a transmission mechanism arranged on the side wall of the pump body through transmission of a driving bevel gear and a transmission bevel gear which are arranged in the driving mechanism, designed in an inclined manner and meshed with each other, and the inner cavity of the first plunger cavity connected with the transmission bevel gear is compressed and expanded circularly, and oil suction and oil discharge operation is carried out. According to the invention, through the design of double plungers and bevel gear transmission, the pressure grade can be improved, the lateral force between the swash plate type axial plunger pump cylinder body and the plungers is avoided through the double-plunger structure, and the mutual restriction between a bevel gear transmission type oblique shaft ...

Device for generating oil-containing water with micro air bubble

The invention discloses a generating device of oily water with micro bubbles, including an air-containing water generator (1); the air-containing water generator (1) consists of a columnar container (4) and a spiral-flow type air-containing water generation tub (5) in the columnar container, the place in the columnar container (4) which is positioned between a water inlet (41) and an air inlet (42) is provided with a first separation sealing plate (44), the place in the columnar container which is positioned below the air inlet (42) is provided with a second separation sealing plate (45), thespiral-flow type air-containing water generation tub (5) consists of a columnar sealed tube part (51), a conical sealed tube part (52) and a microporous tube part (53); wherein, the side wall of the columnar sealed tube part (51) is provided with a tangential diversion port (51a), an opening (53a) at the bottom of the microporous tube part (53) is communicated with a draining cavity (C) of the columnar ...

Pressure detection device for seamless gas cylinder production

The invention discloses a pressure detection device for seamless gas cylinder production, and belongs to the technical field of seamless gas cylinder pressure detection. Comprising a control system formed by connecting an operation table, a working box, a lifting structure, a turnover mechanism, a water pump, an air pump and a water pressure gauge, microcomputer control equipment is arranged in the operation table, and a frame composed of a plurality of cross beams, a plurality of stand columns located between the cross beams and perpendicular to the cross beams and a plurality of supporting plates distributed in the axial direction of the cross beams is arranged in the working box. A plurality of gas cylinders are arranged below the frame and abut against an upper supporting plate, a limiting plate used for positioning openings of the gas cylinders is arranged above the supporting plate, a positioning groove is formed in the side, close to the gas cylinders, of the limiting plate, and ...

A Method For Calculating The Mechanical Parameters Of Heavy Steel Plate Snake/Gradient Temperature Collaborative Rolling With The Same Roll Diameters

Abstract The invention declares a method to calculate the mechanical parameters of heavy steel plate snake/gradient temperature collaborative rolling with the same roll diameters. It includes: firstly, according to the geometric relationship of the snake/gradient temperature collaborative rolling deformation zone, the rolling reduction of the top and bottom work rolls is calculated, and the length of the deformation zone of the snake/gradient temperature collaborative rolling with the same roll diameters is calculated; secondly, the rolled piece are divided into several layers in accordance with the snake/gradient temperature collaborative rolling deformation resistance gradient, and based on the position of the neutral point at the top and bottom work rolls, each layer of the rolled piece is divided into several deformation zones to calculate the yield criterion of the rolled piece; at last, the unit stress calculation model of each deformation zone is constructed separately, and the integration ...

Device for measuring torsional pendulum micro impulse through linear frequency modulation multi-beam laser heterodyne and torsional pendulum micro impulse measurement method based on the same

The invention provides a device for measuring torsional pendulum micro impulse through linear frequency modulation multi-beam laser heterodyne and a torsional pendulum micro impulse measurement method based on the device and relates to the technical field of torsional pendulum micro impulse measurement. By the adoption of the device for measuring torsional pendulum micro impulse through linear frequency modulation multi-beam laser heterodyne and the torsional pendulum micro impulse measurement method based on the device, the problem that by the adoption of an existing device and method for measuring torsional pendulum micro impulse, the measurement precision is low is solved. According to the device for measuring torsional pendulum micro impulse through linear frequency modulation multi-beam laser heterodyne and the torsional pendulum micro impulse measurement method based on the device, a laser emitted by a pulse laser device acts on a working medium target, so that plasma spray is generated ...

Under-pressure leakage-stopping method for middle/low-pressure low-temperature pipeline

The invention discloses an under-pressure leakage-stopping method for a middle/low-pressure low-temperature pipeline. The middle/low-pressure low-temperature pipeline comprises a saddle short section, a plugging plate, an asbestos gasket and a connecting bolt, wherein a flange structure is arranged at one end of the saddle short section; a cylinder with an arch-shaped structure is arranged at the other end of the saddle short section; the plugging plate is of disc shape, is connected with the flange structure end of the saddle short section through the asbestos gasket and is fastened and sealed by using the connecting bolt; the arch-shaped structure end of the saddle short section is welded with the periphery of a pipe wall taking a leaking point of a leaking pipeline as a center of circle; the prepared saddle short section sleeves the periphery of the leaking point, and the saddle short section is in tight contact with the leaking pipe and then is welded or a wood wedge is used for firstly ...

Extremely-high concentration multi-species heavy metal waste liquid treatment method and apparatus

The invention discloses a treatment method of high concentration and multi-class heavy metal waste liquid and the device used for realizing the method, belonging to the technical field of waste water and liquid treatment. The main technology is oxidation-reduction, sedimentation and filtration and magnetic absorption. Firstly, the waste liquid is pumped into the oxidation-reduction pool, and the reagent for the heavy metal ion is put into the oxidation-reduction pool; secondly, the PH value is readjusted after reaction and the water enters into the observation pool; if the effluent water is not up to the standard, the effluent water is reflowed into the oxidation-reduction pool for further treatment; if the concentration of heavy metal ion in the waste liquid exceeds the designed concentration, part of the water in the observation pool is reflowed to maintain the concentration; if the concentration of heavy metal ion exceeds certain value or the ion classes are complicated, the high-efficiency ...

Device for regulating top and bottom blade clearance of hydraulic rolling shear machine

The invention relates to a device for adjusting clearance between upper and lower cutting edges of a hydraulic hobbing shearing machine, pertaining to the technical field of hobbing shear. The device consists of an integral frame, an upper cutting edge tool post, fixed slide wedges, movable slide wedges, a pull rod and a device for operating the pull rod. The device is characterized in that the fixed slide wedges and the movable slide wedges are respectively arranged between four corners of the integral frame and the upper cutting edge as well as left and right columns and the upper cutting edge tool post. The movable slide wedge is connected with a lead screw of a worm speed reducer by the pull rod which is effective in vernier regulation. The device for operating the pull rod comprises an electric motor and a reducing reverse mechanism which can lead the left and right pull rods to move inversely. When the left movable slide wedge moves upwards, the right movable slide wedge moves downwards ...

MAGNESIUM ALLOY CAST-ROLLING UNIT

A magnesium alloy cast-rolling unit, including: a main body; a fluid supplier; an electric pushrod; a linkage mechanism; a horizontal platform; a screw; dovetail guide rails; and a bottom plate. The main body includes a base, a spring cylinder, a hydraulic adjustment cylinder, a connection portion, and a cast-rolling unit body. The connection portion includes an arc-shaped rail. The spring cylinder includes an actuation element. The actuation element includes a piston rod and a pressure strip. The piston rod includes an external thread at one end; and the pressure strip includes an internal thread corresponding to the external thread. The fluid supplier includes a head box, a corrugated pipe, a compression spring assembly including a gland cover, a connection pipe including a convex pipe joint and a concave pipe joint, a flat plate including a groove, a smelting furnace, and a horizontal operation platform. 2. The unit of claim 1 , wherein the spring cylinder further comprises a disc spring.3. The unit of claim 1 , wherein the concave joint surface and the convex joint surface are spherical surfaces having an identical curvature; and the concave joint surface and the convex joint surface have different heights.4. The unit of claim 1 , wherein the head box is connected to the concave pipe joint claim 1 , and the concave pipe joint is fixedly connected to the convex pipe joint via a flange and a bolt; the convex pipe joint cooperates with the groove of the flat plate claim 1 , and the flat plate is disposed on top of the smelting furnace.5. The unit of claim 1 , wherein an inner wall of the horizontal platform comprises a rail for horizontal movement of the horizontal operation platform. This application is a divisional of and claims domestic priority benefits to U.S. patent application Ser. No. 15/904,466, filed Feb. 26, 2018, now pending, which under 35 U.S.C. § 119 and the Paris Convention Treaty claims foreign priority to Chinese Patent Application No. ...

Micro-power-consumption magnetic signal detection device and application method thereof

A micro-power-consumption magnetic signal detection device comprises a magnetic sensor device and a power supply. The power supply is connected with an MCU micro-control unit, an Ad chip and a low-power-consumption magnetic sensor respectively. The low-power-consumption magnetic sensor, the Ad chip and the MCU micro-control unit are connected in sequence. The MCU micro-control unit, an RS232 device and an upper computer are connected in sequence. The MCU micro-control unit is connected with an sd storage card. The magnetic sensor device is used for converting magnetic signals into electric signals and transmitting the electric signals to a signal detection device. The signal detection device converts the electric signals to digital signals, stores the digital signals, detects the digital signals and outputs the detection result through a software algorithm, so that the detection precision is improved, the size is small, the installation is simple, the construction difficulty is lowered, ...

Plate and strip rolling process quality comprehensive prediction and process regulation and control method

The invention discloses a plate and strip rolling process quality comprehensive prediction and process regulation and control method which comprises the following steps: collecting and storing rolling process data to obtain a database; constructing a rolling mechanism model based on a strip steel deformation mechanism; establishing a self-learning model of mechanism fusion data, and performing plate shape detection and calculation to obtain a plate shape measurement result; and designing a plate shape compensation controller based on GA-BP, and performing plate shape compensation control through the plate shape compensation controller based on a plate shape measurement result. According to the method, the mathematical model for describing the strip shape parameter evolution behavior of the strip steel in the rolling and cooling process is established, a certain strip shape quantity is obtained in the finish rolling process so as to compensate the strip shape defect after cooling, and the ...

Environmentally-friendly intelligent high voltage sodium lamp economizer

The invention provides an environmentally-friendly intelligent high voltage sodium lamp economizer, comprising a voltage processing device, a detection control device and a voltage-transforming device, wherein a single-chip of the detection control device judges the current intensity input by a detection end and selects a corresponding signal end to continuously output a starting signal, each switching circuit of the voltage-transforming device, an inductance component, a sodium lamp and an external power supply form a loop, and the inductance values of the inductance component in each loop are different and are determined according to a voltage reduction value required by an external power supply voltage relative to the normal working voltage of the sodium lamp when the corresponding switching circuit is switched on. The invention has the advantages that light can be regulated according to setting parameters, such as road grade, regional grid characteristics of users, road conditions, ...

Lubricating device with automatic air charging-discharging structure and oil tank lining

A Lubricating device with an automatic air charging-discharging structure and an oil tank lining comprises a lubricating pump shell, a power assembly, a lubricating pump, a cylindrical oil box, a piston, a sealing ring and an automatic controller, wherein the power assembly and the lubricating pump are arranged on the lubricating pump shell; the cylindrical oil box is fixedly connected with the lubricating pump shell; the piston divides the cylindrical oil box into an oil box upper cavity A and an oil box lower cavity B which are sealed mutually; the oil box lower cavity B is internally provided with a telescopic lining for storing oil; the periphery of the lower opening of the lining is fixedly sealed and connected with the periphery of the lower opening of the an oil box lower cavity B; the lower opening of the lining is communicated with the oil inlet C of the lubricating pump; the automatic controller connects an electric air pump with the power assembly; the electric air pump is arranged ...

Gas floatation separation device

The invention discloses an air flotation separation device, comprising an external cylinder (2), a rotational flow mixed cylinder (8), a first slag-retaining cylinder (7), a first scum drainage pipe (4) and a scum collecting guide plate (10); wherein, the bottom end of the first slag-retaining cylinder (7) and the bottom of the external cylinder (2) have spacing so as to form a water passage; thebottom of the side wall of the rotational flow mixed cylinder (8) is connected with a water inlet pipe (16) which enters in tangent direction; the periphery of the top of the external cylinder (2) isprovided with a clean water collecting trench (14); and the scum collecting guide plate (10) is a strip-typed plate in an involute shape, with the involute direction right opposite to the water rotational flow direction in the rotational flow mixed area (A). Compared with the prior art, the air flotation separation device does not need to add external energy cleaning systems, achieves the object of long-term ...

Method for determining two-roller straightening inclination angles and roller gap process parameter

The invention relates to a method for determining inclination angles and the size of a roller gap in the straightening process of two rollers, and belongs to the technical field of two-roller straightening machines. Firstly, the recurvation radius needed by bar straightening is determined; on the basis of determination of the recurvation radius, by means of a three-point flexure theory and a full-contact hypothesis, the inclination angles alpha between the axis of a concave roller and the axis of a bar and between the axis of a convex roller and the axis of the bar and a roller gap value delta are determined during stable straightening, wherein the inclination angle between the axis of the concave roller and the axis of the bar is alpha A, the inclination angle of the axis of the convex roller and the axis of the bar is alpha T, alpha is related with the following variables, that is, li, Ri, r0, rhow, R0, theta and gamma, delta is related with the following variables, that is, kappa, rho ...

Swing saw under arthroscope

The invention discloses a swing saw under an arthroscope, which is used in an arthroscope operation, and comprises a saw blade which comprises a saw blade head end and a saw blade tail end, the saw blade head end is hinged with the saw blade tail end, and the included angle between the saw blade head end and the saw blade tail end can be adjusted so as to increase the cutting range of the saw blade; a power source is arranged in the supporting part and provides power for swinging of the saw blade; one end of the transmission part is inserted into the supporting part and connected with a power source, and the other end of the transmission part is located outside the supporting part and detachably connected with the tail end of the saw blade; the transmission part transmits power of the power source to the saw blade and enables the saw blade to do reciprocating rectilinear motion parallel to the tooth-shaped face. Compared with an existing swing saw, the swing saw has the advantages that ...

Production line for recycling and processing waste materials of steel rolling

A production line for recycling and processing waste materials of steel rolling, the production line including: an electromagnetic hoisting equipment; a conveying platform; a clamping-and-feeding device; a segmentation shear; a swing conveyor device; a pushing device; a rolling-type shearing machine; a chain-type conveyor track; a material guiding device; two shredding-type shearing machines; and a scrap collection device. The electromagnetic hoisting equipment is connected to the conveying platform, and is configured to hoist waste materials of steel rolling to the conveying platform; the conveying platform is connected to the clamping-and-feeding device, and is configured to convey the waste materials to the clamping-and-feeding device; the segmentation shear cooperates with the clamping-and-feeding device and is configured to segment the waste materials of steel rolling into steel plates; the pushing device is configured to push the steel plates to the rolling-type shearing machine.

Nutrient fertilizer for improving green tea quality and efficient nutrient management method

The invention provides a nutrient fertilizer for improving green tea quality. The nutrient fertilizer comprises a base fertilizer and an additional fertilizer, and the base fertilizer is prepared fromthe following raw materials by weight: 0.05-0.2 part of a nitrification inhibitor, 58-60 parts of a nitrogenous fertilizer, 11-12 parts of a phosphate fertilizer, 23-24 parts of a potash fertilizer,5-6 parts of a magnesium fertilizer and 1-2 parts of an anti-caking agent; the additional fertilizer is a nitrogen fertilizer added with 0.2-0.5wt% of the nitrification inhibitor in the claim 1. The determined nitrogen form and proportion suitable for green tea quality formation are provided, the yield of black tea is increased, physicochemical and sensory properties of green tea are improved, nutrient management of green tea is optimized, the yield of green tea and the nutrient utilization efficiency are improved, the cost is reduced, manpower is saved, and the influence caused by nutrient emission ...

Device and method for measuring micro impulse by means of linear frequency modulation multi-beam laser heterodyne quadratic harmonic method and torsional pendulum method

The invention provides a device and method for measuring micro impulse by means of a linear frequency modulation multi-beam laser heterodyne quadratic harmonic method and a torsional pendulum method, and belongs to the field of optics. The device and method are aimed to solve the problems that according to an existing laser interference method for measuring the micro impulse, accidental errors are large and measurement precision is low. Linearly polarized light emitted from a linear frequency modulation laser device is reflected through a first plane reflection mirror and a second plane reflection mirror and then enters a plane standard lens, light beams penetrating through the front surface of the plane standard lens are reflected by the rear surface and the front surface of the plane standard lens in the plane standard mirror for many times, then multiple beams of reflection light are obtained, the beams of reflection light penetrate through the front surface of the plane standard lens ...

METHOD FOR HEATING BLANK FOR ROLLING PRODUCTION

A method for heating a blank in a first heating furnace and a second heating furnace. The first heating furnace includes a first chamber and a second chamber communicating with the first chamber. The method includes: 1) heating the blank in the first chamber to the temperature of less than 300° C.; 2) transferring the blank heated in the first chamber to the second heating furnace, and heating the blank to the temperature of between 350° C. and 850° C., where the temperature of the second heating furnace is detected using a thermocouple, and the temperature of the blank is detected by an optical thermometer; 3) transferring the blank heated in the second heating furnace to the second chamber, and measuring the temperature of the blank using a contact thermometer; and 4) transferring the blank from 3) to a rolling mill. 1. A method for heating a blank in a first heating furnace and a second heating furnace , the first heating furnace comprising a first chamber and a second chamber communicating with the first chamber , and the method comprising:1) heating the blank in the first chamber to a temperature of less than 300° C.;2) transferring the blank heated in the first chamber to the second heating furnace, and heating the blank to a temperature of between 350° C. and 850° C., where a temperature of the second heating furnace is detected using a thermocouple, and the temperature of the blank is detected by an optical thermometer;3) transferring the blank heated in the second heating furnace to the second chamber, continuously heating the blank in the second chamber to increase the temperature of the blank in a range of 0-200° C., and measuring the temperature of the blank using a contact thermometer, where an accuracy of temperature adjustment of the blank in second chamber of the first heating furnace is ±10° C.; and4) transferring the blank from 3) to a rolling mill.2. The method of claim 1 , wherein the first chamber and the second chamber are disposed side by side ...

Method for preparing viscose stable fiber of bamboo and hemp fiber

The invention for preparing bamboo bast viscose staple fiber includes the following procedures: preparing bast pulp and bamboo pulp, pulp-feeding, impregnating, pressing, aging, cooling, metering, xanthating, after-dissolving, mixing, filtering, ripening, defoaming, filtering, spinning, collecting and drawing, after-treatment, rotary screening and packing. The product produced by using the present invention has high dry-wet strength, good adsorption-air permeability, draping property, mellow hand and strong bacterial inhibition and resistance to mildew.

Device and method for measuring micro-impulse based on linear frequency modulation multi-beam laser heterodyne quadratic harmonic method and torsional pendulum method

The invention provides a device and method for measuring the micro-impulse based on a linear frequency modulation multi-beam laser heterodyne quadratic harmonic method and a torsional pendulum method, and belongs to the field of optics. The device and the method aim at solving the problems that when the micro-impulse is measured through an existing laser interference method, accidental errors are large and measurement accuracy is low. The device comprises a linear frequency modulation laser device, a first plane mirror, a torsional pendulum system, a pulse laser device, a plane standard mirror, a converging lens, a photoelectric detector and a signal processing system. Laser beams emitted by the pulse laser device and a working medium target act to generate plasma jetting, and a standard beam is made to rotate under the reverse jetting action. Linearly-polarized light passes through the surface of a second plane mirror pasted on the standard beam, the light, transmitted by the front surface ...

Method for preparing metal composite plate strip by rolling

A method for preparing a metal composite plate by rolling includes the following steps: 1) rolling composite surfaces of a base plate and a cladding plate, respectively, to obtain the base plate corrugation and the cladding plate corrugation for mating with each other; 2) cleaning the composite surfaces of the base plate and the cladding plate to expose the metal matrixes of the base plate and the cladding plate; 3) laminating the base plate and the cladding plate sequentially so that the base plate corrugation on the base plate and cladding plate corrugation on the cladding plate mate with each other, compacting, and performing welding sealing treatment to the base plate and the cladding plate to obtain a composite plate slab; and 4) rolling the composite plate slab after inspection by using a compositing machine to a desirable thickness, to obtain a metal composite plate.

Two-way control grease absorber and waste grease recovery device

The invention discloses a two-way control grease absorber. The two-way control grease absorber comprises a housing, a piston and a plunger; the housing is provided with a piston chamber and a plunger chamber, the two of which are communicated with each other; the diameter of the piston chamber is greater than that of the plunger chamber; the piston is connected with the plunger, and the piston and the plunger are in sliding seal fit with the piston chamber and the plunger chamber, respectively; grease openings are formed at the two ends of the piston chamber, respectively; a grease suction opening for feeding a grease in one way is formed in a side wall of the plunger chamber, while a grease discharge opening for discharging the grease in one way is formed at the right end of the plunger chamber; the piston moves leftwards to drive the plunger to open the grease suction opening. When the grease openings at the two ends of the piston chamber are used for supplying the grease alternately, ...

Shearing method of hydraulic rolling cut type metal sheet shearing machine

The invention relates to a method for calculating a moving speed of a hydraulic cylinder piston of a hydraulic hobbing type metal plate shearing machine, belonging to the metal plate shearing machinery technical field. The hydraulic cylinder piston of the hydraulic hobbing type metal plate shearing machine comprises hydraulic cylinders, a transmission mechanism and a shearing mechanism; the method is characterized in that the computing formulas of the moving speed of the pistons of two hydraulic cylinders (1,4) comprise that: in a cut-in stage of the shearing process, the computing formulas of the moving speed of the pistons of two hydraulic cylinders (1,4) are respectively a formula (1) and a formula (2); in a hobbing stage of the shearing process, the computing formulas of the moving speed of the pistons of two hydraulic cylinders (1,4) are respectively a formula (3) and a formula (4). The moving speed of the hydraulic cylinder pistons is calculated in production application according ...

Method for preparing viscose staple fibre using cotton stalk

The present invention relates to a method for preparing viscose staple fiber by utilizing cotton stalk. It includes two steps of preparing cotton viscose pulp and preparing viscose staple fiber by utilizing said viscose pulp. The technological process for preparing cotton viscose pulp successively includes the following steps: preparing material, prehydrolysis, digestion, rinsing, pulping, refining, dechlorination and acid treatment. The quality of said pulp finished product is as follows: alpha-cellulose content is 94%; cuprammonium viscosity is 16.5CP; ash content is 0.12%; and iron content is 20 mg/kg.

Method for rolling metal clad plate strip

The invention discloses a method for rolling a metal clad plate strip. The method includes the following steps of 1) selecting a metal substrate and a metal clad plate, cleaning the surfaces for cladding of the substrate and the clad plate until the metal matrix is exposed, 2) stacking the substrate and the clad plate orderly, and preforming to obtain a clad plate blank, 3) rolling the clad plate blank through a compound roughing mill provided with a beading roll to obtain the clad plate of which the clad surface is provided with a corrugated engagement surface, and 4) flat rolling the clad plate which is formed through rough rolling and provided with the integrated corrugated clad plate through a cladding finishing mill until the desired thickness, and thus obtaining the clad plate strip. As the roughed integrated corrugated clad plate is combined with the substrate through toothed surfaces, the difference of metal plastic deformation caused by the difference of the deformation resistance ...

Refrigerator

The utility model relates to the technical field of household appliances, and discloses a refrigerator, which comprises a shell comprising a door frame, and first mounting grooves are formed in the left and right sides of the door frame; the door body covers the door frame, and a second mounting groove is formed in the position, corresponding to the first mounting groove, of the inner side of thedoor body; and the connecting hinge is detachably mounted between the first mounting groove and the second mounting groove which are positioned on the same side, and is configured to connect the doorbody with the door frame. According to the refrigerator, the positions for installing the hinges are arranged on the two sides of the door frame of the refrigerator and the two sides of the refrigerator door, edge changing installation can be conducted on the hinges of the refrigerator door, and therefore the opening direction of the refrigerator door can be changed, different use requirements ofusers ...

Lubricating device with self-inflating air chamber pressure oil tank

The invention provides a lubricating device with a self-inflating air chamber pressure oil tank. The device comprises a lubricant pump shell, a power assembly, a lubricant pump, a cylindrical oil tank, a piston and seal rings, wherein the power assembly and the lubricant pump driven by the power assembly are installed on the lubricant pump shell; the cylindrical oil tank is fixedly connected with the lubricant pump shell; the piston separates the cylindrical oil tank into an oil tank upper cavity A and an oil tank lower cavity B which are sealed with each other via the seal rings; an oil inlet C of the lubricant pump is communicated with the oil tank lower cavity B for storing the oil; an air pump driven by the power assembly is also installed on the lubricant pump shell; the oil tank upper cavity A is a sealed air chamber and is connected with an inflating valve extending out of the upper part of the oil tank upper cavity A; and the inflating valve is communicated with the air outlet of ...

Device and method for measuring electrostriction coefficient through linear frequency modulation double-beam laser heterodyne

The invention provides a device and method for measuring an electrostriction coefficient through linear frequency modulation double-beam laser heterodyne and belongs to the field of measurement of the electrostriction coefficient. The device and method aim to solve the problem that by the adoption of an existing electrostriction coefficient measurement method, precision is low. The device comprises a linear frequency modulation laser device, a first plane mirror, a thin glass plate, a second plane mirror, a two-dimensional regulation frame, a convergent lens, a photoelectric detector and a signal processing system. The method comprises the steps that voltage is applied to a measured piezoelectric ceramic tube, the photoelectric detector starts to receive light beam signals, the signal processing system continuously collects light currents output by the photoelectric detector and processes collected difference frequency signals, the current distance between the thin glass plate and the second ...

Method and device of jet airlift recirculated membrane bioreactor

The invention provides a method for manufacturing a jet gas-stripping type independent membrane bioreactor as well as a device used for realizing the method. A jet aerator is adopted to replace the traditional blower for realizing the stripping effect of a membrane module, thereby greatly reducing the operational energy. Partial circulation solution in a bio-aeration pool flows through the jet aerator at a high speed to generate negative pressure for sucking air in, a fast mixed gas-liquid two-phase flow which is evenly ejected into the membrane module through a novel water and air distributing device is formed, continuous and effective washing and air bump rinse are carried out, the pollution of the membrane is effectively reduced and the service life of the membrane is prolonged. The violent agitation function produced by the jet aerator also increases the mass-transfer velocity in the mixed solution, so as to speed up the biochemical reaction and improve the treatment efficiency. The ...

Lubricating device with automatic air inflation discharging structure and air tyre pressure oil tank

The invention relates to a lubricating device with an automatic air inflation discharging structure and an air tyre pressure oil tank. The lubricating device comprises a lubricating pump shell, a power assembly, a lubricating pump, a cylindrical oil tank, a piston, an automatic controller; the power assembly and the lubricating pump which is driven by the power assembly are installed on the lubricating pump shell; the cylindrical oil tank and the lubricating pump shell are fixedly connected; the cylindrical oil tank is divided into an oil tank upper cavity A and an oil tank lower cavity B which are mutually sealed through the seal ring by the piston; an oil inlet C of the lubricating pump is communicated with the oil tank lower cavity B which is used for storing grease; the automatic controller is connected with a motor-driven air pump and the power assembly through circuits; the outer part of the cylindrical oil tank is provided with the motor-driven air pump; the oil tank upper cavity ...

Lubricating device with pneumatic tire pressure oil tank

The invention relates to a lubricating device with a pneumatic tire pressure oil tank, which comprises a lubricating pump shell, a power assembly, a lubricating pump, a cylindrical oil tank, a piston and a sealing ring, wherein the power assembly and the lubricating pump driven by the power assembly are arranged on the lubricating pump shell; the cylindrical oil tank is fixedly connected with the lubricating pump shell; the piston divides the cylindrical oil tank into an oil tank upper cavity A and an oil tank lower cavity B which are sealed mutually by the sealing ring; and an oil inlet C of the lubricating pump is communicated with the oil tank lower cavity B for storing oil. The lubricating device is characterized in that: a sealing pneumatic tire is arranged in the oil tank upper cavity A and is connected with an inflating valve extending out of the upper part of the oil tank upper cavity A. Due to the adoption of the structure, an oil inlet mode of oil suction from the oil inlet of ...

Device and method for measuring linear expansion coefficient of metal by virtue of linear-frequency-modulation multi-beam laser heterodyne

The invention relates to a device and a method for measuring a linear expansion coefficient of metal by virtue of a linear-frequency-modulation multi-beam laser heterodyne, belonging to the field of the measurement of linear expansion coefficients of materials and solving the problem that measuring errors are too large because more parameters need to be directly measured and the operation is complex in an existing linear expansion coefficient measuring method. According to the device and the method, to-be-measured parameter information is modulated into the frequency difference of heterodyne signals by virtue of a linear frequency modulation technique based on the linear frequency modulation and a laser heterodyne technique, a plurality of to-be-measured parameters can be simultaneously obtained by demodulating the laser heterodyne signals, and the accurate information of the to-be-measured parameters is obtained by virtue of weighted average treatment. The device and the method are applied ...

Novel centrifugal cast tube molding cylinder

The invention discloses a novel centrifugal cast tube molding cylinder. A furnace tube of a current industrial furnace mainly adopts centrifugal casting, the molding cylinder for casting is mainly a water-cooled metal molding cylinder, and the molding cylinder is mainly made of chromium-molybdenum steel with high strength and good toughness. In the production process, the temperature of the metal molding cylinder produces obvious periodic change, and the metal molding cylinder is subjected to temperature alternating heat shock. The metal molding cylinder is deformed under the action of heat stress, and the inner wall produces damage such as cracking and the like due to heat fatigue so as to cause abandonment of the metal molding cylinder. The invention provides the novel centrifugal cast tube molding cylinder combining the metal molding cylinder and a graphite molding cylinder. Because the graphite material has good performance and is used as a novel molding cylinder material in the alloy ...

Device for adopting linear frequency modulation double beam laser heterodyne method and torsional pendulum method to measure micro impulse and measuring method thereof

The invention relates to a device for adopting a linear frequency modulation double beam laser heterodyne method and a torsional pendulum method to measure micro impulse and a measuring method thereof and belongs to the field of micro impulse measurement. The problem that existing devices and methods for micro impulse measurement are low in measurement precision is solved. The linear frequency modulation double beam laser heterodyne method is applied to the micro impulse measurement method, measurement of the micro impulse is converted into measurement of a standard beam torsional pendulum angle, information of the to-be-measured standard beam torsional pendulum angle can be obtained indirectly through the measurement of the thickness of a plane standard lens, measurement accuracy is effectively improved, the measured micro impulse and the incidence angle theta 0 form linear relations when the turning angle is small (smaller than 5 degrees), the measuring error is smaller than 0.52%, the ...

Device and method for measuring angle by virtue of linear-frequency-modulation multi-beam laser heterodyne

The invention relates to a device and a method for measuring an angle by virtue of a linear-frequency-modulation multi-beam laser heterodyne, which solves the problem that an existing precise angle measurement method cannot meet a high-precision angle measurement requirement. According to the device and the method, by utilizing the characteristics of non-contact property, high precision, simple structure and the like of an optical angle gauge, the large-scope dip angle detection can be realized without direction information of a movable mirror simultaneously when the precision is met; the information of a plurality of to-be-measured angles is loaded to the frequency difference of heterodyne signals by virtue of a linear frequency modulation technique according to the high-precision angle measurement requirements in an engineering field and can be simultaneously demodulated by virtue of Fourier transform, and the precision of the to-be-measured angles can be improved by virtue of weighted ...

METHOD FOR PREPARING METAL COMPOSITE PLATE STRIP BY ROLLING

A method for preparing a metal composite plate/strip by rolling, comprises the following steps: 1) respectively rolling the composite surfaces of a base plate and a cladding plate to obtain the base plate corrugation and the cladding plate corrugation for mating with each other; 2) cleaning the composite surfaces of the base plate and the cladding plate to expose the metal matrixes; 3) sequentially laminating the base plate and the cladding plate so that the base plate corrugation on the base plate and cladding plate corrugation on the cladding plate mate with each other, compacting, and performing welding sealing treatment to obtain a composite plate slab; 4) rolling the qualified composite plate after inspection by using a compositing machine to a desirable thickness, to obtain a composite plate/strip. 1. A method for preparing a metal composite plate/strip by rolling , comprising:1) Respectively rolling composite surfaces of a base plate and a cladding plate to obtain a base plate corrugation and a cladding plate corrugation for their mating with each other;2) Cleaning the composite surfaces of the base plate and the cladding plate to expose their metal matrixes;3) Sequentially laminating the base plate and the cladding plate so that the base plate corrugation on the base plate and the cladding plate corrugation on the cladding plate mate with each other, and then compacting, welding and sealing them to obtain a composite plate slab; and4) Rolling the composite plate after inspection by using a compositing machine to a desirable thickness, to obtain a composite plate/strip.2. The method for preparing a metal composite plate/strip by rolling according to claim 1 , wherein the process of compacting claim 1 , welded and sealing in step 3) further comprises: feeding the base plate and the cladding plate of which the corrugated surfaces mesh with each other to a press for a compaction claim 1 , packaging and welding with a vertical plate by first spot welding around ...

Filter with counter-flush

Single hydraulic cylinder driving and roll-cutting type plate shearing machine

The invention discloses a single hydraulic cylinder driving and roll-cutting type plate shearing machine and belongs to the field of metal plate shearing machines. The shearing machine comprises a machine frame, a shearing mechanism, a connecting rod mechanism and a horizontally arranged hydraulic cylinder. The shearing machine is characterized in that the horizontally arranged hydraulic cylinder is hinged to a hydraulic cylinder rack through a hinge pin, the top end of a piston rod of the hydraulic cylinder is hinged to an upper beam connecting rod on the hydraulic cylinder rack side, an upper tool rest connecting rod and one end of a synchronous connecting rod in the middle through hinge pins respectively, the other end of the synchronous connecting rod is hinged to an upper beam connecting rod on the guiding rod rack side and an upper tool rest connecting rod through hinge pins respectively, the other ends of the two upper beam connecting rods are hinged to an upper beam through hinge ...

Nondestructive rapid determining and controlling method for nitrogen nutrition of tea plant

The invention discloses a nondestructive rapid determining and controlling method for nitrogen nutrition of tea plant, belonging to the technical field of tea planting, characterized by comprising: (1) determining the SPAD critical value; (2) determining the SPAD value of target tea garden; (3) comparing the obtained SPAD value of target tea garden with the critical value in the step (1) to determine the optimum nitrogen amount. In the invention, the nitrogen amount can be determined by determining the SPAD value of target tea garden, thus the method is reasonable and the operation is simple and rapid, the determining is performed on the leaves of the tea plant without the damage to the plant and the effect of the weather, the method has the practicability for the production, in particular has strong fertilizing instructiveness for the tea grower or the technician and overcomes the deficiencies in the prior art.

Hydraulic two-side rolling-cut shears

Hydraulic two-side rolling-cut shears, including: a front transport roller device, a rear transport roller device, a shear body, and a roller carrier. The front transport roller device includes a laser scriber, a magnetic alignment device, and a pinch roller device. The rear transport roller device includes a vertical guide roller. The laser scriber is disposed on the front end of the front transport roller device. The magnetic alignment device is disposed in the middle part of the front transport roller device. The pinch roller device is disposed on the rear end of the front transport roller device in front of the shear body. The roller carrier is disposed longitudinally in the middle of the shear body. The vertical guide roller is disposed on the rear transport roller device and behind the shear body.

Pressure type air flotation separation device

The invention discloses a pressure type air flotation separation device, which comprises a tank body (1), and an oil collecting barrel (3) and an air bubble flow rectifying barrel (2) which are arranged in the tank body (1), wherein an air bubble flow rectifying area (A) of which the bottom is sealed is formed between the outer side wall of the air bubble flow rectifying barrel (2) and the inner side wall of the tank body (1); a flotation separation area (B) of which the bottom is open is formed between the inner side wall of the air bubble flow rectifying barrel (2) and the outer side wall of the oil collecting barrel (3); an oil-containing water inlet pipe (4) and a gas-dissolving water inlet pipe (5) are arranged on the tank body (1) tangentially; and a water discharge pipe (11) is arranged at the bottom of the tank body (1). Compared with the prior art, the pressure type air flotation separation device has the advantages that: the interference of large air bubbles with the oil-water ...

Nutritional tea garden soil conditioner for improving acidified soil and application method of nutritional tea garden soil conditioner

The invention provides a nutritional tea garden soil conditioner for improving acidified soil and an application method of the nutritional tea garden soil conditioner, and belongs to the technical field of tea garden soil conditioning. The conditioner is prepared from the following raw materials in parts by weight: 190-340 parts of dolomite dust, 30-55 parts of quick lime, 12-20 parts of a calcium magnesium phosphate fertilizer, 55-70 parts of turf, 2-10 parts of potassium chloride, 0.1-0.5 part of ammonium molybdate, 0.2-0.8 part of a nitrification inhibitor and 0.2-0.8 part of a urease inhibitor. The application method mainly aims to increase the pH value of tea garden soil, dolomite dust, quick lime, calcium magnesium phosphate fertilizer, turf, potassium chloride, ammonium molybdate, nitrification inhibitor and urease inhibitor are reasonably matched together, so that the pH value of soil can be effectively increased, absorption of tea trees on heavy metal elements and pollution elements ...

Method for stabilizing end group of fluorin polymer

Self clean sand filter for online scanning current

A self-cleaning sand filter with in-line scavenger is composed of cylindrical body, water inlet tube, water inlet valve, filtering material layer, water outlet, water collector, cyclone water separator, and tangent-scavenging water distributing tube. Its advantages are high filter efficiency and long service life.

Orange peel breaking and tearing mechanism for citrus peeling machine

The invention discloses an orange peel breaking and tearing mechanism for a citrus peeling machine. The orange peel breaking and tearing mechanism comprises a main shaft, a guiding device, elastic sheets, breaking and tearing blades and control blocks, wherein the main shaft is used for conveying citrus; the breaking and tearing blades are arranged on the elastic sheets; at least one elastic sheet is arranged; one breaking and tearing blade and at least one control block are arranged on each elastic sheet; and one end of each elastic sheet can be lifted along with the control blocks, so that the breaking and tearing blades are driven to puncture and tear orange peels. According to the orange peel breaking and tearing mechanism, to-be-peeled citrus can be punctured and torn, so that openings with required depths and quantity are obtained, successful tearing and curling of a next peeling process can be performed conveniently, the peeling effect is improved, the success rate of citrus peeling ...

Method and device for treating a great variety of waste emulsion of high concentration using hyperfiltration membrane method

The invention discloses a method for treating the waste emulsion with high concentration and a plurality of varieties by an ultrafiltration membrane method and a device thereof, which belongs to the technical field of waste water and waste liquid treatment. The main technique of the invention is 'dissolved air flotation-ultrafiltration membrane-electrolysis floatation', which can effectively reduce the dosage of medicament and improve emulsion breaking effect by adopting an efficient dissolved air flotation system, moreover, the water for dissolved air flotation, which is taken from a subsequent intermediate water tank, can flexibly adjust and dilute the concentration of the waste water, thus improving the running stability and the shock resistant loading capability of the system. An ultrafiltration membrane with large flux, high separative efficiency and long service life is adopted in an ultrafiltration system to realize oil-water separation and to concentrate the emulsion for a plurality ...

Medical bed

The invention discloses a medical bed which comprises a base, a bed plate is fixedly mounted at the upper end of the base, a backrest plate is arranged at one end of the bed plate, side plates are fixedly mounted on the two sides of one end of the bed plate and are distributed in a mirror image mode, connecting shafts are fixedly mounted on the two sides of the end, facing the bed plate, of the backrest plate, and the ends of the connecting shafts are rotatably mounted on the side plates on the same sides of the connecting shafts; a movable mechanism is arranged on the base, the driving mechanism is connected with the movable mechanism, and the supporting mechanism is installed on the base and connected with the bottom of the backrest plate; a movable mechanism is arranged to be matched with a driving mechanism, a backrest plate rotates around a connecting shaft, meanwhile, a hydraulic cylinder drives a bottom block to move upwards, the backrest plate is supported, a first rotating shaft ...

Special composite fertilizer for tea, and application thereof

The invention discloses a special composite fertilizer for tea, and an application thereof, and belongs to the technical field of fertilizers. A mass ratio of N: P2O5: K2O: MgO in the composite fertilizer is 18:8:12:2. The application method of the composite fertilizer is characterized in that 50kg of the special composite fertilizer for tea is applied to 666.6m<2> of field, the composite fertilizer is applied in the fertilizing trench between tea tree rows, and the depth of the fertilizing trench is 10-30cm. The special composite fertilizer for tea has the advantages of scientificity, reasonability, extensive applicability, tea output improvement, tea quality guaranteeing, and tea grower income increase.

Rolling and cutting metal plate shearing machine

Tea tree anti-freezing agent and preparation method thereof

The invention relates to a tea tree anti-freezing agent and a preparation method thereof and belongs to the technical field of tea tree anti-freezing. The tea tree anti-freezing agent comprises the following raw materials according to weight ratio: 0.05 to 0.15 percent of paclobutrazol, 0.02 to 0.05 percent of sodium benzoate, 5.0 to 10.0 percent of mineral oil, 3.0 to 5.0 percent of ethyl alcohol and water in balancing amount. The tea tree anti-freezing agent provided by the invention has the following benefits: 1, the tea tree anti-freezing agent is nontoxic, harmless and has no pollution to environment, can be directly sprayed onto plant leaf surfaces, and is simple and convenient to use, the preparation method of the tea tree anti-freezing agent is simple, and the effective freeze-proof period can reach 7 to 10 days. 2, the tea tree anti-freezing agent can activate biological enzyme, prevent the formation of the ice nucleating bacteria, induce the production of anti-freezing factors ...

Gas floatation separation device

The invention discloses an air flotation separation device, comprising an external cylinder (2), a rotational flow mixed cylinder (8), a first slag-retaining cylinder (7), a first scum drainage pipe (4) and a scum collecting guide plate (10); wherein, the bottom end of the first slag-retaining cylinder (7) and the bottom of the external cylinder (2) have spacing so as to form a water passage; the bottom of the side wall of the rotational flow mixed cylinder (8) is connected with a water inlet pipe (16) which enters in tangent direction; the periphery of the top of the external cylinder (2) is provided with a clean water collecting trench (14); and the scum collecting guide plate (10) is a strip-typed plate in an involute shape, with the involute direction right opposite to the water rotational flow direction in the rotational flow mixed area (A). Compared with the prior art, the air flotation separation device does not need to add external energy cleaning systems, achieves the object of ...

Storage rack for refrigerator and refrigerator

The utility model discloses a storage rack for a refrigerator, and belongs to the technical field of household appliances. The device comprises a fixing frame which comprises a free end part and a bearing end part; the fixed keel is configured to be connected with the rear side wall of the refrigerator; the carrying plate is arranged on the bearing end part; and the free end part is connected withthe fixed keel. By adopting the embodiment, the thickness of two side walls of the refrigerator is reduced, the utilization rate of internal space of the refrigerator is increased, and the refrigerator is more attractive. The utility model further discloses a refrigerator.

Lateral chromatography system for detecting canine distemper virus antibody and preparation method thereof

The invention provides a lateral chromatography system for detecting a canine distemper virus antibody and a preparation method of the lateral chromatography system, and belongs to the field of biological detection.The lateral chromatography system is characterized by comprising a combination pad and a detection line; the combination pad is coated with a non-covalent coupling mixture of colloidal carbon and an artificial binding antigen; the detection line is coated with an artificial binding antigen; the amino acid sequence of the artificial binding antigen is shown as Seq ID No.2. The test strip provided by the invention has the advantages of high sensitivity, rapidness, simplicity, convenience, short time consumption and the like, is suitable for on-site rapid detection, and provides a simple serological detection method for on-site immune canine antibody monitoring.

Continuous roll forming process and device for stainless steel corrugated plate of heat exchanger

The invention discloses a process and a device for preparing a stainless steel corrugated plate of a heat exchanger through continuous rolling of a special hole roll. The technological process comprises the following steps: uncoiling by using an uncoiling machine; guiding by using a guide clamp feeding roll; automatically sensing temperature and heating by a heating furnace; straightening the plate by a straightening unit; guiding by using the guide clamp feeding roll; performing continuous roll forming by using the special hole roll; cutting to length by using a V-shaped shear blade fly shear; collecting dropped materials, wherein the plate is subjected to continuous roll forming during engagement of a forming roll. Based on a continuum forming principle, the influence between adjacent ripples is considered, and a rebound angle model in a continuum rolling process is established. During design of the forming roll, the continuum rebound angle model and an optimal design principle are combined ...

Device for measuring micro-impulse by adopting linear frequency modulation double-beam laser heterodyne method and torsion method and measuring method of device

The invention provides a device for measuring a micro-impulse by adopting a linear frequency modulation double-beam laser heterodyne method and a torsion method, and a measuring method of the device and belongs to the field of micro-impulse measurement. The problem that an existing device and method for measuring the micro-impulse are low in measurement precision is solved. The linear frequency modulation double-beam laser heterodyne method is applied to the micro-impulse measuring method, measurement of the micro-impulse is converted into measurement of the torsion angle of a standard beam, information of the torsion angle of the standard beam to be measured can be obtained indirectly by measuring the incident light refraction angle of a plane standard mirror, and the measurement precision is effectively improved; when the rotating angle is smaller than five degrees, the linear relation between the measured micro-impulse and the incidence angle theta 0 is formed, a measurement error is ...

Device for measuring torsional pendulum micro impulse through linear frequency modulation multi-beam laser heterodyning and torsional pendulum micro impulse measuring method based on device

The invention provides a device for measuring torsional pendulum micro impulse through linear frequency modulation multi-beam laser heterodyning and a torsional pendulum micro impulse measuring method based on the device, and belongs to the field of torsional pendulum micro impulse measurement. The device and method are used for solving the problem that an existing torsional pendulum micro impulse measurement method and device are low in measurement precision. Laser emitted by a pulse laser acts on a working medium target to generate plasma jet, the back jet effect enables a standard beam to rotate, while the standard beam rotates, a linear frequency modulation laser continuously emits linear frequency modulation laser light which is reflected to a plane standard mirror through a first plane mirror and a second plane mirror, the front surface and the rear surface of the plane standard mirror both reflect the linear frequency modulation laser light, the linear frequency modulation laser ...

Sewage treatment device

The invention discloses a sewage treatment device, comprising a fan, a water pump and a tank body. The upper part of the tank body is provided with a sewage inlet and an exhaust port; a Z shape separator is fixed inside the tank below the sewage inlet; the Z shape separator comprises an upper baffle plate, a vertical baffle plate, a lower baffle plate, and divides the tank body into four regions; the upper baffle plate is provided with a plurality of reflux holes, the reflux holes are equipped with anti-reflux nozzles for preventing the water above the upper baffle plate from flowing to the lower position; a membrane module is fixed below the upper baffle plate, and a hanging membrane packing assembly is fixed above the lower baffle plate; a left aeration device is fixed below the membrane assembly, and is connected with a fan outside the tank body through a gas supply pipeline; a water inlet of the water pump outside the tank body is connected with a membrane assembly water outlet duct ...

Device and method for measuring glass thickness through linear frequency modulation multi-beam laser heterodyne

The invention discloses a device and a method for measuring glass thickness through linear frequency modulation multi-beam laser heterodyne and belongs to the technical field of precision glass thickness measurement. The device and the method for measuring the glass thickness through the linear frequency modulation multi-beam laser heterodyne solve the problem that the glass thickness measurement error is large due to the fact that only single to-be-measured parameters are obtained after the existing laser heterodyne signal frequency spectrums are demodulated. Laser emitted from a frequency modulation laser enters into a first reflecting mirror after being reflected through a second reflecting mirror and light beams enter into plain glass after being reflected through the first reelecting mirror; a plurality of beams of reflecting light is obtained after the incident light is reflected by the front surface and the rear surface of the plane glass for a plurality of times; the plurality of ...

Device and method for measuring linear expansion coefficient by use of quadratic harmonic linear frequency-modulation multiple-beam laser heterodyne method

The invention relates to a device and a method for measuring the linear expansion coefficient by use of a quadratic harmonic linear frequency-modulation multiple-beam laser heterodyne method, and belongs to the optics field. The device and the method are used for solving the problems that the error is large and the measurement precision is low when a direct measurement method is adopted for measuring the linear expansion coefficient. The device comprises a linear frequency modulation laser, a thin glass plate, a first plane mirror, a metal wire to be detected, an electrothermal furnace, a convergent lens, a photoelectric detector and a signal processing system; linear polarized light enters the first plane mirror after obliquely penetrating into the thin glass plate at an incident angle of theta 0, and a light beam is reflected and transmitted multiple times between the thin glass plate and the first plane mirror which are parallel, so that the multiple light beams transmitting the thin ...

Hydraulic system of hydraulic hobbing type metallic plate shear

The invention relates to a hydraulic system of a hydraulic hobbing type metal sheet shearer, and belongs to the technical field of the hydraulic hobbing type metal sheet shearer. The hydraulic system comprises an electromotor, a plunger pump, a piston accumulator, and various hydraulic valve pieces. The hydraulic system is characterized in that the electromotor drives the plunger pump to form a power source; the power source is also communicated with an insertion type one way valve, the piston accumulator and an insertion type electromagnetic direction control valve; and the power source is communicated with a rodless cavity and a rod cavity of a hydraulic cylinder for controlling the motion of the shearer through an insertion type electromagnetic one way valve, a servo proportional valveand an insertion type reversing and pressure regulating valve respectively. Through the control of each valve piece, the hydraulic cylinder moves according to requirement, so rolling shearing is realized ...

Preparation of ethylene and tetrafluoroethylene copolymer

The invention discloses a manufacturing method of a copolymer of ethylene and tetrafluoroethylene. The manufacturing method comprises the following steps: 1) adding a solvent perfluoro-4-methyl-2-amylene to a polymerization reactor, deoxygenating, heating to the temperature of 40-85 DEG C, filling a mixed gas of polymeric monomers (the tetrafluoroethylene and the ethylene) into the reactor, and keeping reaction pressure at 0.5-2.0 Mpa; 2) adding a chain transfer agent cyclohexane, a third monomer, an initiator perfluoro-cycloalkyl-formyl peroxide to the reactor, supplementing the mixed gas of the polymeric monomers (the tetrafluoroethylene and the ethylene), and recovering the solvent and an additive which fails to participate in the reaction to obtain polymer powder; and 3) drying the obtained polymer powder at the temperature of 100-200 DEG C for 1-10h to obtain the copolymer. The selected novel initiator and the polymerization solvent have stable initiation efficiency and a little side ...

Hydraulic rolling-cut shears

A hydraulic rolling-cut shears, including: a horizontally disposed hydraulic cylinder; a shear mechanism including an upper tool post and a lower tool post; a linkage mechanism including a first upper connecting rod, a first lower connecting rod, a second upper connecting rod, a second lower connecting rod, and a synchronous connecting rod; and supports including a hydraulic cylinder support and a guiding rod support. The hydraulic cylinder is hinged to and disposed on the hydraulic cylinder support through a first pin. One end of the first upper connecting rod, one end of the first lower connecting rod, and one end of the synchronous connecting rod are hinged to one end of a piston rod of the hydraulic cylinder via a second pin. The first upper connecting rod, the synchronous connecting rod, and the first lower connecting rod are disposed at one side of the hydraulic cylinder support.

UHF RFID reader-writer radio frequency circuit cavity structure and control method

The invention discloses a UHF RFID reader-writer radio frequency circuit cavity structure and a control method, the UHF RFID reader-writer radio frequency circuit cavity structure comprises a PCB, the PCB is provided with a plurality of independent and separated cavities, each cavity is provided with at least one functional device, the cavities provide connecting lines to enable the functional devices to be electrically connected, and the layout mode of the composition of the cavities is that the functional devices are electrically connected with the PCB. And a connection framework corresponding to the functional device. Comprising a first local oscillator signal module, an up-conversion mixer module, a radio frequency amplification module, a gain control module, a coupler module, a radio frequency filtering module, a carrier elimination module, an LNA amplification module, a down-conversion mixer module, a second local oscillator signal module, a hardware filtering module, an intermediate ...

Magnesium alloy cast-rolling unit

A magnesium alloy cast-rolling unit, including: a main body; a fluid supplier; an electric pushrod; a linkage mechanism; a horizontal platform; a screw; dovetail guide rails; and a bottom plate. The main body includes a base, a spring cylinder, a hydraulic adjustment cylinder, a connection portion, and a cast-rolling unit body. The connection portion includes an arc-shaped rail. The spring cylinder includes an actuation element. The actuation element includes a piston rod and a pressure strip. The piston rod includes an external thread at one end; and the pressure strip includes an internal thread corresponding to the external thread. The fluid supplier includes a head box, a corrugated pipe, a compression spring assembly including a gland cover, a connection pipe including a convex pipe joint and a concave pipe joint, a flat plate including a groove, a smelting furnace, and a horizontal operation platform.

Hammerhead subsection tilting type seamless steel tube hot heading machine

The invention relates to a seamless steel tube hot heading machine hammerhead arm subsection tilting determination method and belongs to the technical field of seamless steel tube heading machines. Firstly, the maximum moment of hitting power of the heading machine is determined, a hammerhead arm subsection tilting angle is determined on the basis, and a hammerhead arm driving section moves the horizontal position at the maximum moment of the hitting power. A hammerhead arm subsection tilting angle is theta related with the following variables. Theta={G, P1, P2, FT, Fi, alpha, mu, H, h, a, b, Li, m, A, B, C}, wherein the G, the FT and the Fi are stresses of a hammerhead arm, the P1 and the P2 are stresses of a hammerhead, the alpha is a hammerhead external mold angle, the mu is hammerhead and steel pipe friction coefficients, the H, the h, the a, the b and the Li are stress position parameters of the hammerhead arm, the m, and the A, the B and the C are hammerhead arm contour parameters ...

Pressure type air flotation separation device

The invention discloses a pressure type air flotation separation device, which comprises a tank body (1), and an oil collecting barrel (3) and an air bubble flow rectifying barrel (2) which are arranged in the tank body (1), wherein an air bubble flow rectifying area (A) of which the bottom is sealed is formed between the outer side wall of the air bubble flow rectifying barrel (2) and the inner side wall of the tank body (1); a flotation separation area (B) of which the bottom is open is formed between the inner side wall of the air bubble flow rectifying barrel (2) and the outer side wall of the oil collecting barrel (3); an oil-containing water inlet pipe (4) and a gas-dissolving water inlet pipe (5) are arranged on the tank body (1) tangentially; and a water discharge pipe (11) is arranged at the bottom of the tank body (1). Compared with the prior art, the pressure type air flotation separation device has the advantages that: the interference of large air bubbles with the oil-water ...

Polymer based conductive elastomer with positive temperature coefficient effect and preparation method thereof

The invention discloses a polymer based conductive elastomer with positive temperature coefficient effect and a preparation method thereof. The elastomer comprises 70-92 wt% of thermoplastic vulcanizate, 0.1-5 wt% of a curing agent, conductive carbon black, 0.1-0.5 wt% of antioxidant and 8-30 wt% of conductive carbon black (CB), wherein the sum of the above components is 100 wt%. The preparation method is as below: preparing the raw materials; adding PP, EPDM and the antioxidant 1010 into an internal mixer, and mixing at 70r pm and 200 DEG C for 3min; adding the curing agent, and mixing fir 5 min; and finally adding CB particles, and mixing for 10 min to obtain a CB filled dynamic vulcanizate conductive elastomer.

Control method of rolling reduction of roller straightener based on plate profile characteristic

The invention provides a control method of rolling reduction of a roller straightener based on a plate profile characteristic. The method comprises the following steps of acquiring a standard distanceand an actual distance from a plate profile instrument to the surface of a panel; making difference between the standard distance and the actual distance to obtain unevenness values of the panel; taking the maximum value and the minimum value in the unevenness values of the panel as two end points of an unevenness interval; dividing the unevenness interval into M parts, and drawing an equal unevenness curve by measuring points with equal unevenness values according to the unevenness values in equally divided positions; determining rolling reduction before correction by the ith straightening roller and calculating the rolling reduction corrected by the ith straightening roller according to a formula; and controlling the rolling reduction of the straightening roller according to the characteristic ...

Hydraulic system of hydraulic hobbing type metallic plate shear

The invention relates to a hydraulic system of a hydraulic hobbing type metal sheet shearer, and belongs to the technical field of the hydraulic hobbing type metal sheet shearer. The hydraulic system comprises an electromotor, a plunger pump, a piston accumulator, and various hydraulic valve pieces. The hydraulic system is characterized in that the electromotor drives the plunger pump to form a power source; the power source is also communicated with an insertion type one way valve, the piston accumulator and an insertion type electromagnetic direction control valve; and the power source is communicated with a rodless cavity and a rod cavity of a hydraulic cylinder for controlling the motion of the shearer through an insertion type electromagnetic one way valve, a servo proportional valve and an insertion type reversing and pressure regulating valve respectively. Through the control of each valve piece, the hydraulic cylinder moves according to requirement, so rolling shearing is realized ...

Novel cylindrical electromagnetic drive equipment

The invention discloses novel cylindrical electromagnetic drive equipment, which mainly comprises a metal cylinder. The novel cylindrical electromagnetic drive equipment is characterized in that: a drive shaft is arranged outside the metal cylinder; a magnetic coil winding is arranged on the drive shaft; and each group of magnetic coils corresponds to an outer magnet steel. The invention discloses the manufacturing and installation of an electromagnetic driver, realizes the normal running of the novel cylindrical electromagnetic drive equipment and fulfils the aims of improving driving efficiency, and reducing noise, abrasion and slip frequency. The cylindrical electromagnetic drive equipment has the characteristics of low cost, excellent performances and the like, improves the running efficiency of a centrifuge, reduces the noise of a production environment, and has great popularization value.

Method of preparing rayon staple by benne stalk

The invention relates to a method for using pedaliin stem to prepare adhesive staple fiber, comprising that preparing pedaliin stam adhesive slurry and using said slurry to prepare adhesive staple fiber. The first step comprises that preparing material, degelatinizing, beating, refining, dechlorinating, acid treating, and softening. And the second step comprises that feeding slurry, immerging, compressing, aging, cooling, sulfidising, dissolving, filtering, ripening, defoaming, filtering, spinning, beaming drawing, following treating, circling and drying. The invention has the advantages that the resources are abundant, with low cost, while the prepared fiber has high quality, high mechanism strength, soft face, or the like.

Device for generating oil-containing water with micro air bubble

The invention discloses a generating device of oily water with micro bubbles, including an air-containing water generator (1); the air-containing water generator (1) consists of a columnar container (4) and a spiral-flow type air-containing water generation tub (5) in the columnar container, the place in the columnar container (4) which is positioned between a water inlet (41) and an air inlet (42) is provided with a first separation sealing plate (44), the place in the columnar container which is positioned below the air inlet (42) is provided with a second separation sealing plate (45), the spiral-flow type air-containing water generation tub (5) consists of a columnar sealed tube part (51), a conical sealed tube part (52) and a microporous tube part (53); wherein, the side wall of the columnar sealed tube part (51) is provided with a tangential diversion port (51a), an opening (53a) at the bottom of the microporous tube part (53) is communicated with a draining cavity (C) of the columnar ...

Method for treating high-salt water by air stripping type membrane distillation

The invention provides a method for treating high-salt water by air stripping type membrane distillation. In the method, an air compressor is arranged in the system, a hydrothermal circulation pump and the air compressor jointly generate a gas-liquid two phase flow on a high-temperature side of a hydrophobic membrane, an electromagnetic valve is arranged on an air pipe, and pulse air intake is formed by the intermittent opening and closing of the electromagnetic valve. The method can effectively control membrane pollution and ensures the stable and high-efficiency operation of a membrane distillation device. The method has the main advantages of effectively relieving the concentration polarization of membrane distillation and preventing the formation of a gel layer due to the scraping effect of air bubbles on membrane surfaces in the gas-liquid two phase flow, and improving the turbulence scale of the membrane surfaces, increasing the membrane surface flow rate, reducing the concentration ...

Magnesium alloy cast-rolling unit

A magnesium alloy cast-rolling unit, including: a main body; a fluid supplier; an electric pushrod; a linkage mechanism; a horizontal platform; a screw; dovetail guide rails; and a bottom plate. The main body includes a base, a spring cylinder, a hydraulic adjustment cylinder, a connection portion, and a cast-rolling unit body. The connection portion includes an arc-shaped rail. The spring cylinder includes an actuation element. The actuation element includes a piston rod and a pressure strip. The piston rod includes an external thread at one end; and the pressure strip includes an internal thread corresponding to the external thread. The fluid supplier includes a head box, a corrugated pipe, a compression spring assembly including a gland cover, a connection pipe including a convex pipe joint and a concave pipe joint, a flat plate including a groove, a smelting furnace, and a horizontal operation platform.

Method for preparing metal clad plate strip through rolling

The invention discloses a method for preparing a metal clad plate strip through rolling. The method includes the following steps of 1) forming matched substrate corrugation and clad plate corrugation on the cladding surfaces of a substrate and a clad plate through rolling, respectively, 2) cleaning the cladding surfaces of the substrate and the clad plate so that the metal matrix is exposed, 3) stacking the substrate and the clad plate orderly, enabling the substrate corrugation on the substrate to be engaged with the clad plate corrugation on the clad plate, and obtaining a clad plate blank after hold-down welding and sealing treatment, and 4) rolling the clad plate blank passing the inspection until the desired thickness by virtue of a cladding machine, and thus obtaining the clad plate strip. As the matched toothed corrugations are rolled out on the substrate and the clad plate, the contact area of the substrate and the clad plate is increased; the binding force between the substrate ...

Thick grease secondary lubricating pump device

A thick grease secondary lubricating pump device comprises a lubricating pump shell, a power assembly, a high-pressure plunger pump and an oil tank, wherein the power assembly and the high-pressure plunger pump driven by the power assembly are arranged on the lubricating pump shell; the oil tank is fixedly connected with the lubricating pump shell which is also provided with a low-pressure plunger pump driven by the power assembly; an oil suction port A of the low-pressure plunger pump is communicated with the oil tank, and an oil discharge port C of the low-pressure plunger pump is connectedwith an oil suction port B of the high-pressure plunger pump in a sealing way by a pipeline which is further connected with an energy storage device and an overflow valve; and an oil inlet and an oiloutlet of the energy storage device are respectively communicated with the oil discharge port C of the low-pressure plunger pump and the oil suction port B of the high-pressure plunger pump. By adopting ...

Method of polymerization and coagulation for treating sewage participating of heavy concentration acrylonitrile

Nondestructive rapid determining and controlling method for nitrogen nutrition of tea plant

The invention discloses a nondestructive rapid determining and controlling method for nitrogen nutrition of tea plant, belonging to the technical field of tea planting, characterized by comprising: (1) determining the SPAD critical value; (2) determining the SPAD value of target tea garden; (3) comparing the obtained SPAD value of target tea garden with the critical value in the step (1) to determine the optimum nitrogen amount. In the invention, the nitrogen amount can be determined by determining the SPAD value of target tea garden, thus the method is reasonable and the operation is simple and rapid, the determining is performed on the leaves of the tea plant without the damage to the plant and the effect of the weather, the method has the practicability for the production, in particular has strong fertilizing instructiveness for the tea grower or the technician and overcomes the deficiencies in the prior art.

Heavy hydraulic rolling-cutting type shearing machine for double sides in longitudinal direction of metal plate

The invention relates to a heavy hydraulic rolling-cutting type shearing machine for double sides in the longitudinal direction of a metal plate. The main technical problems that existing shearing equipment for the double sides of a metal plate is low in production efficiency, poor in quality, complex in structure and high in using cost are solved. According to the technical scheme, the heavy hydraulic rolling-cutting type shearing machine for the double sides in the longitudinal direction of the metal plate comprises a front conveying roll device and a rear conveying roll device and further comprises a laser scribing device, magnetic force alignment devices, an inlet single-transmission type pinch roll device, a shearing machine body for the double sides in the longitudinal direction of the metal plate, a middle carrier roll device and outlet vertical guide rolls. The laser scribing device is arranged at the front end of the front conveying roll device, the magnetic force alignment devices ...

Earth fault detection device and system for overhead line

The invention discloses an earth fault detection device and system for an overhead line. The detection device comprises an acquisition device, a converter and a controller, wherein the acquisition device comprises three collectors which are respectively in electric connection with three drainage wires in the overhead line and used for collecting current signals of the three drainage wires of the overhead line; the converter is in electric connection with the acquisition device and used for conducting synchronous sampling treatment on the current signals of the three drainage wires to acquire digital signals corresponding to the current signals; the controller is connected with the converter and used for conducting Fourier transformation on the digital signals to acquire zero sequence current and sending out a signal indicating that the overhead line is in an earth fault when the zero sequence current is non-zero. Through the detection device and system, the zero sequence current of the ...

Polymer-based conductive elastomer and preparation method thereof

The invention discloses a polymer-based conductive elastomer and its preparation method. According to the preparation method, a certain percentage of a cross-linking agent is used to crosslink a polymer matrix and the cross-linked polymer matrix is crushed to obtain cross-linked particles; and the cross-linked particles are added in proportion into the matrix to prepare a cross-linked particles/elastic matrix/conductive carbon material composite elastomer. By the above method, conductive percolation threshold of the polymer-based conductive elastomer can effectively be reduced; stretching strength of the polymer-based conductive elastomer under the stretching action can be enhanced; and elasticity of the polymer-based conductive elastomer can effectively be raised, and strain recovery rate of the polymer-based conductive elastomer under strain retraction action can be raised. The polymer-based conductive elastomer prepared by the above method has advantages of good electrical property, ...

Device and method for detecting flatness of sheet material

A device for detecting the flatness of a sheet material includes a conveyor, a gantry, a beam, an industrial camera unit, a speed measurement unit, a vibration measurement unit, a multi-line laser, a cable carrier, an industrial controller, and a control cabinet. The conveyor is disposed beneath the gantry and includes a plurality of pinch roll assemblies for feeding a sheet material. The beam is disposed on the gantry and includes a first side and a second side. The industrial camera unit is disposed on the first side of the beam and includes at least two industrial cameras. The speed measurement unit is disposed between the at least two industrial cameras. The vibration measurement unit is disposed on the second side of the beam and includes at least two distance measurement devices. The multi-line laser is disposed between the at least two distance measurement devices.

HYDRAULIC ROLLING-CUT SHEARS

A hydraulic rolling-cut shears, including: a horizontally disposed hydraulic cylinder; a shear mechanism including an upper tool post and a lower tool post; a linkage mechanism including a first upper connecting rod, a first lower connecting rod, a second upper connecting rod, a second lower connecting rod, and a synchronous connecting rod; and supports including a hydraulic cylinder support and a guiding rod support. The hydraulic cylinder is hinged to and disposed on the hydraulic cylinder support through a first pin. One end of the first upper connecting rod, one end of the first lower connecting rod, and one end of the synchronous connecting rod are hinged to one end of a piston rod of the hydraulic cylinder via a second pin. The first upper connecting rod, the synchronous connecting rod, and the first lower connecting rod are disposed at one side of the hydraulic cylinder support. 1. A hydraulic rolling-cut shears , comprising:a horizontally disposed hydraulic cylinder;a shear mechanism comprising an upper tool post and a lower tool post;a linkage mechanism comprising a first upper connecting rod, a first lower connecting rod, a second upper connecting rod, a second lower connecting rod, and a synchronous connecting rod; andsupports comprising a hydraulic cylinder support and a guiding rod support;whereinthe hydraulic cylinder is hinged to and disposed on the hydraulic cylinder support through a first pin;one end of the first upper connecting rod, one end of the first lower connecting rod, and one end of the synchronous connecting rod are hinged to one end of a piston rod of the hydraulic cylinder via a second pin;the first upper connecting rod, the synchronous connecting rod, and the first lower connecting rod are disposed at one side of the hydraulic cylinder support, and are disposed from top to bottom in that order;the other end of the synchronous connecting rod is hinged to one end of the second upper connecting rod and one end of the second lower ...

PRODUCTION LINE FOR RECYCLING AND PROCESSING WASTE MATERIALS OF STEEL ROLLING

A production line for recycling and processing waste materials of steel rolling, the production line including: an electromagnetic hoisting equipment; a conveying platform; a clamping-and-feeding device; a segmentation shear; a swing conveyor device; a pushing device; a rolling-type shearing machine; a chain-type conveyor track; a material guiding device; two shredding-type shearing machines; and a scrap collection device. The electromagnetic hoisting equipment is connected to the conveying platform, and is configured to hoist waste materials of steel rolling to the conveying platform; the conveying platform is connected to the clamping-and-feeding device, and is configured to convey the waste materials to the clamping-and-feeding device; the segmentation shear cooperates with the clamping-and-feeding device and is configured to segment the waste materials of steel rolling into steel plates; the pushing device is configured to push the steel plates to the rolling-type shearing machine. 2. The production line of claim 1 , wherein the shredding-type shearing machine comprises pinch rollers and a pressing device.3. The production line of claim 1 , wherein the conveying platform comprises a centering device and an auxiliary detecting device.4. The production line of claim 1 , wherein:the clamping-and-feeding device comprises: a four-link-rod lifting mechanism, a self-centering clamping-and-feeding unit, a stepper-type transmission-and-driving device, and a frame;the four-link-rod lifting mechanism is configured to lift and lower the self-centering clamping-and-feeding unit; the stepper-type transmission-and-driving device employs rack-and-pinion transmission to transfers steel plates to the segmentation shear;the four-link-rod lifting mechanism comprises a lifting hydraulic cylinder, a fixing block, a link rod, an equal-arm link rod, an equal-arm link-rod frame, a lifting platform and a displacement detecting device; the lifting hydraulic cylinder is fixed on the ...

SYSTEM FOR FLATTENING STEEL PLATES

A system for flattening steel plates includes crane, a first conveyor, a second conveyor, a first shape detector, a second shape detector, a first rangefinder, a second rangefinder, a first detection device, a second detection device, a first idler roller, a second idler roller, a flattening machine, a first robot, a second robot, a third robot, and a fourth robot. The flattening machine is connected to one end of the first conveyor and one end of the second conveyor. The first shape detector is disposed above a middle part of the first conveyor. The second shape detector is disposed above a middle part of the second conveyor. The first rangefinder is disposed at one end of the first conveyor. The first detection device is disposed between the first rangefinder and the flattening machine. The second rangefinder is disposed on one end of the flattening machine. 2. The system of claim 1 , wherein:the third robot and the fourth robot each comprises a base assembly, a traverse device, a pushing device, a swing device, and an electromagnet;the base assembly comprises a base plate comprising two protrusions, a first guide rail, a second guide rail, a plurality of rail clips, and a gear rack comprising teeth; the first guide rail and the second guide rail are respectively disposed on the two protrusions, and are secured and supported by the plurality of rail clips; the gear rack is disposed adjacent and parallel to the first guide rail or the second guide rail;the traverse device comprises a first base, a first sliding block, a second sliding block, a mounting hole, a first gear motor, a second base, a gear shaft, a bearing, a spacer ring, and a first shaft sleeve; the first sliding block and the second sliding block are respectively disposed under both sides of the first base; the first gear motor is connected to the second base; the second base is connected to the gear shaft and disposed in the mounting hole; the bearing and the spacer ring are disposed on the gear shaft ...

LIQUID DISTRIBUTING VALVE

A liquid distributing valve includes a housing, an oil supply passage, an oil storage valve and a two-position three-way valve. The oil storage valve is separated into an oil storage chamber and an oil pressing chamber by a piston, and the oil storage chamber is in communication with an oil discharge port and has a spring pressing against the piston. The two-position three-way valve includes a valve body cavity having an oil inlet in communication with the oil supply passage, a valve core and a valve seat having a core hole in communication with the oil storage chamber via a bypass oil passage. When the valve core is at one position, the oil inlet is blocked off, and the oil pressing chamber is in communication with the oil storage chamber. When the valve core is at another position, the core hole is blocked off, lubricant enters the oil inlet. 1. A liquid distribution valve , comprising at least one housing , an oil supply passage , and at least one oil storage valve and at least one two-position three-way valve both using a respective inner cavity of the housing as carrier , and each oil storage valve corresponding to one two-position three-way valve; a valve chamber of the oil storage valve being separated into an oil storage chamber and an oil pressing chamber by a piston , and the oil storage chamber being in communication with an oil discharge port and having a spring pressing against the piston; wherein the oil supply passage is arranged inside the housing; the two-position three-way valve comprises a valve body cavity , a valve core and a valve seat , the valve body cavity is in communication with the oil pressing chamber via an oil exchanging passage , the valve body cavity has an oil inlet in communication with the oil supply passage , and the valve seat has a core hole in communication with the oil storage chamber via a bypass oil passage;in a case that the valve core is at a first valve position, the valve core blocks off the oil inlet, and the oil ...

MAGNESIUM ALLOY CAST-ROLLING UNIT

A magnesium alloy cast-rolling unit, including: a main body; a fluid supplier; an electric pushrod; a linkage mechanism; a horizontal platform; a screw; dovetail guide rails; and a bottom plate. The main body includes a base, a spring cylinder, a hydraulic adjustment cylinder, a connection portion, and a cast-rolling unit body. The connection portion includes an arc-shaped rail. The spring cylinder includes an actuation element. The actuation element includes a piston rod and a pressure strip. The piston rod includes an external thread at one end; and the pressure strip includes an internal thread corresponding to the external thread. The fluid supplier includes a head box, a corrugated pipe, a compression spring assembly including a gland cover, a connection pipe including a convex pipe joint and a concave pipe joint, a flat plate including a groove, a smelting furnace, and a horizontal operation platform. 2. The unit of claim 1 , wherein the spring cylinder further comprises a disc spring.3. The unit of claim 1 , wherein the concave joint surface and the convex joint surface are spherical surfaces having an identical curvature; and the concave joint surface and the convex joint surface have different heights.4. The unit of claim 1 , wherein the head box is connected to the concave pipe joint claim 1 , and the concave pipe joint is fixedly connected to the convex pipe joint via a flange and a bolt; the convex pipe joint cooperates with the groove of the flat plate claim 1 , and the flat plate is disposed on top of the smelting furnace.5. The unit of claim 1 , wherein an inner wall of the horizontal platform comprises a rail for horizontal movement of the horizontal operation platform.7. The apparatus of claim 6 , wherein the temperature regulatable cast-rolling roller comprise a first area claim 6 , a second area claim 6 , and a third area.8. The apparatus of claim 7 , wherein the temperature regulation device comprises a detachable throttle pipe claim 7 , a first ...

METHOD FOR ROLLING METAL COMPOSITE PLATE STRIP

The present invention discloses a method for rolling a metal composite plate/strip, comprising the following steps: 1) selecting a metal base plate and a metal cladding plate, cleaning the surfaces of the base plate and the cladding plate to be composited until the metal matrixes are exposed; 2) sequentially laminating the base plate and the cladding plate to obtain a composite plate slab; 3) rolling the composite plate slab through a composite rough rolling mill having a corrugated roll to obtain a composite plate having a corrugated mating surface on its composite surface; and 4) flattening the composite plate having a complete corrugated cladding plate by a composite finish rolling mill to a desirable thickness to obtain a composite plate/strip. 1. A method for rolling a metal composite plate/strip , comprising:1) selecting a base plate and a cladding plate, cleaning surfaces of the base plate and the cladding plate to be composited until their metal matrixes are exposed;2) sequentially laminating the base plate and the cladding plate to obtain a composite plate slab;3) rolling the composite plate slab through a composite rough rolling mill having a corrugated roll to obtain a composite plate having a corrugated mating surface on its composite surface; and4) flattening the composite plate having a complete corrugated cladding plate by a composite finish rolling mill to a desirable thickness to obtain a composite plate/strip.2. The method for rolling a metal composite plate/strip according to claim 1 , wherein the cladding plate is one piece claim 1 , the deformation resistance of the cladding plate is greater than that of the base plate claim 1 , and the composite rough rolling mill is a two-high rolling mill with one roll having toothed surface and the other roll having smooth surface so that the rolling is performed by allowing the roll having toothed surface to be in contact with the cladding plate and the roll having smooth surface to be in contact with the ...

HYDRAULIC TWO-SIDE ROLLING-CUT SHEARS

Hydraulic two-side rolling-cut shears, including: a front transport roller device, a rear transport roller device, a shear body, and a roller carrier. The front transport roller device includes a laser scriber, a magnetic alignment device, and a pinch roller device. The rear transport roller device includes a vertical guide roller. The laser scriber is disposed on the front end of the front transport roller device. The magnetic alignment device is disposed in the middle part of the front transport roller device. The pinch roller device is disposed on the rear end of the front transport roller device in front of the shear body. The roller carrier is disposed longitudinally in the middle of the shear body. The vertical guide roller is disposed on the rear transport roller device and behind the shear body. 1. Shears , comprising:a front transport roller device, the front transport roller device comprising a laser scriber, a magnetic alignment device, and a pinch roller device;a rear transport roller device, the rear transport roller device comprising a vertical guide roller;a shear body; anda roller carrier;whereinthe laser scriber is disposed on a front end of the front transport roller device;the magnetic alignment device is disposed in a middle part of the front transport roller device; the pinch roller device is disposed on a rear end of the front transport roller device and in front of the shear body;the roller carrier is disposed longitudinally in the middle of the shear body; andthe vertical guide roller is disposed on the rear transport roller device and behind the shear body.2. The shears of claim 1 , wherein the shear body comprises a first hydraulic rolling-cut shears claim 1 , a second hydraulic rolling-cut shears claim 1 , a tool changing mechanism claim 1 , and a locking device; the first hydraulic rolling-cut shears is mounted on a movable base to form a movable hydraulic rolling-cut shears capable of moving on a guide rail; the locking device is ...

Liquid distributing valve

A liquid distributing valve comprises a shell (1) and an oil supply channel (2). The shell (1) comprises an oil storage valve and a two-position three-way valve; the oil storage valve is separated into an oil storage chamber (31) and an oil pressing chamber (32) by a piston (4); the oil storage chamber (31) is communicated with an oil draining port (61) and is provided with a spring (5) butting against the piston (4); the two-position three-way valve comprises a valve chamber (7), a valve core (8) and a valve base (9); the valve chamber (7) is communicated with the oil pressing chamber (32) through an oil exchanging channel (10); an oil inlet (62) of the valve chamber (7) is communicated with the oil supply channel (2); a core hole (91) of the valve base (9) is communicated with the oil storage chamber (31) through a bypass oil channel (11). When the valve core (8) is located at a first valve position, the oil inlet (62) is plugged and the oil pressing chamber (32) is communicated with the oil storage chamber (31); when the valve core (8) is located at a second valve position, the core hole (91) is plugged and lubricating oil enters the oil pressing chamber (32) from the oil inlet (62), the piston is pushed to compress the spring, and the lubricating oil in the oil storage chamber (31) is drained from the oil draining port (61) and is conveyed to an appointed lubricating point. The liquid distributing valve is applicable to various lubricating demands, has a compact structure and high reliability and is convenient in maintenance.

Device for binding rod bundles

A device for binding rod bundles includes a tilting apparatus, a wire stripper, a binding apparatus, and a collection apparatus. The tilting apparatus includes a tilting platform, a hydraulic cylinder, and an articulated base. The wire stripper includes a main body, a first sliding mechanism, a second sliding mechanism, a first slide block, and a second slide block. The binding apparatus includes an electric clamp, a clamping frame, a sliding rail, a rail base, and a drive motor. The collection apparatus is hinged to the tilting apparatus; the wire stripper is disposed below the tilting apparatus; the tilting platform includes a hinge hole for receiving one end of the clamping frame. The collection apparatus includes a shaft hole for receiving one end of the tilting platform. The hydraulic cylinder is hinged to the articulated base and the other end of the tilting platform is hinged to the hydraulic cylinder.

Device and method for detecting flatness of sheet material

A device for detecting the flatness of a sheet material includes a conveyor, a gantry, a beam, an industrial camera unit, a speed measurement unit, a vibration measurement unit, a multi-line laser, a cable carrier, an industrial controller, and a control cabinet. The conveyor is disposed beneath the gantry and includes a plurality of pinch roll assemblies for feeding a sheet material. The beam is disposed on the gantry and includes a first side and a second side. The industrial camera unit is disposed on the first side of the beam and includes at least two industrial cameras. The speed measurement unit is disposed between the at least two industrial cameras. The vibration measurement unit is disposed on the second side of the beam and includes at least two distance measurement devices. The multi-line laser is disposed between the at least two distance measurement devices.

dispositivo de bombeamento de graxa

Um dispositivo de bombeamento de graxa, compreendendo um corpo de bomba (10), um mecanismo de acionamento e um par de êmbolos (20), e compreendendo ainda uma válvula de reversão (40) e um mecanismo de alavanca (50); as ações de comutação, entre as posições da válvula, de um núcleo de válvula (42) da válvula de reversão (40) são acionadas pela ação de oscilação do mecanismo de alavanca (50), um eixo rotativo de saída (311) aciona o membro de alternância (321) que gira entre eles, e quando o eixo rotativo de saída (311) gira reciprocamente nas direções para frente e reversa, o membro de alternância (321) alterna o mecanismo de alavanca (50) nas direções para frente e reversa, de modo que o mecanismo de alavanca (50) oscila reciprocamente, alterando com isso a posição da válvula de reversão (40); pelo menos um do mecanismo de alavanca (50) e do membro de alternância (321) é uma estrutura elástica, quando o eixo rotativo de saída (311) gira em uma direção para trás e reversa, o membro de alternância (321) entra em contato com o mecanismo de alavanca (50) e aciona o núcleo da válvula (42) para operar, quando o núcleo da válvula (42) é comutado para uma posição de válvula correspondente, o membro de alternância (321) e o mecanismo de alavanca (50) deslizam relativamente por meio de deformação elástica da estrutura elástica. A energia de reversão da válvula de reversão (40) provém dos componentes de acionamento que acionam o par de êmbolos (20) para operar, e a energia é transmitida ao núcleo da válvula (42) da válvula de reversão (40) por meio da cooperação do mecanismo de alavanca (50) e do membro de alternância (321), sendo de estrutura simples e fácil de usar.

Device for binding rod bundles

A device for binding rod bundles includes a tilting apparatus, a wire stripper, a binding apparatus, and a collection apparatus. The tilting apparatus includes a tilting platform, a hydraulic cylinder, and an articulated base. The wire stripper includes a main body, a first sliding mechanism, a second sliding mechanism, a first slide block, and a second slide block. The binding apparatus includes an electric clamp, a clamping frame, a sliding rail, a rail base, and a drive motor. The collection apparatus is hinged to the tilting apparatus; the wire stripper is disposed below the tilting apparatus; the tilting platform includes a hinge hole for receiving one end of the clamping frame. The collection apparatus includes a shaft hole for receiving one end of the tilting platform. The hydraulic cylinder is hinged to the articulated base and the other end of the tilting platform is hinged to the hydraulic cylinder.

储物抽屉、冰箱

本申请公开了一种储物抽屉，属于家电技术领域。该储物抽屉包括：抽屉壳体；抽屉柜；反弹滑轨；和推力辅助结构，被配置为，给抽屉壳体提供向外的推力；其中，反弹滑轨能够将抽屉壳体滑动连接在抽屉柜内。采用该实施例，在抽屉壳体和抽屉柜之间安装推力辅助结构，当反弹滑轨解除锁定，向外弹出时，加大抽屉壳体被推送出来的距离，便于用户将抽屉壳体抽出，使用更加方便，无需安装把手，提高对储物空间利用率。本申请还公开了一种冰箱。

一种烤箱

本实用新型实施例公开了一种烤箱，属于烤箱技术领域。该烤箱包括烤制室、冷藏室以及传送机构；烤制室与冷藏室一体成型，传送机构设置在烤箱内，传送机构用于将冷藏室内的食物传送到烤制室内。本实用新型实施例提供了一种烤箱可以使用户很简单的操作，就可以将烤制水平提高，能够最大限度的提高食物的口感。

Grease pumping device

A grease pumping device, comprising a pump body (10), a driving mechanism and a plunger pair (20), and further comprising a reversing valve (40) and a lever mechanism (50); the switching actions, between valve positions, of a valve core (42) of the reversing valve (40) are driven by the swinging action of the lever mechanism (50), an output rotating shaft (311) drives a toggle member (321) rotating therewith, and when the output rotating shaft (311) rotates reciprocally in the forward and reverse directions, the toggle member (321) toggles the lever mechanism (50) in the forward and reverse directions, such that the lever mechanism (50) swings reciprocally, thereby changing the valve position of the reversing valve (40); at least one of the lever mechanism (50) and the toggle member (321) is an elastic structure, when the output rotating shaft (311) rotates in a forward or reverse direction, the toggle member (321) contacts the lever mechanism (50) and drives the valve core (42) to operate, when the valve core (42) is switched to a corresponding valve position, the toggle member (321) and the lever mechanism (50) slide relatively by means of elastic deformation of the elastic structure. The reversing power of the reversing valve (40) comes from driving components that drive the plunger pair (20) to operate, and the power is transmitted to the valve core (42) of the reversing valve (40) by means of the cooperation of the lever mechanism (50) and the toggle member (321), being simple in structure and convenient to use.

Dispositivo de bombeamento de graxa

um dispositivo de bombeamento de graxa, compreendendo um corpo de bomba (10), um mecanismo de acionamento e um par de êmbolos (20), e compreendendo ainda uma válvula de reversão (40) e um mecanismo de alavanca (50); as ações de comutação, entre as posições da válvula, de um núcleo de válvula (42) da válvula de reversão (40) são acionadas pela ação de oscilação do mecanismo de alavanca (50), um eixo rotativo de saída (311) aciona o membro de alternância (321) que gira entre eles, e quando o eixo rotativo de saída (311) gira reciprocamente nas direções para frente e reversa, o membro de alternância (321) alterna o mecanismo de alavanca (50) nas direções para frente e reversa, de modo que o mecanismo de alavanca (50) oscila reciprocamente, alterando com isso a posição da válvula de reversão (40); pelo menos um do mecanismo de alavanca (50) e do membro de alternância (321) é uma estrutura elástica, quando o eixo rotativo de saída (311) gira em uma direção para trás e reversa, o membro de alternância (321) entra em contato com o mecanismo de alavanca (50) e aciona o núcleo da válvula (42) para operar, quando o núcleo da válvula (42) é comutado para uma posição de válvula correspondente, o membro de alternância (321) e o mecanismo de alavanca (50) deslizam relativamente por meio de deformação elástica da estrutura elástica. a energia de reversão da válvula de reversão (40) provém dos componentes de acionamento que acionam o par de êmbolos (20) para operar, e a energia é transmitida ao núcleo da válvula (42) da válvula de reversão (40) por meio da cooperação do mecanismo de alavanca (50) e do membro de alternância (321), sendo de estrutura simples e fácil de usar.

Grease pumping device

Robot for oil tank cleaning

A robot includes a truss assembly, a walking assembly, a power unit, and a rack including a guide pillar, a second link. The truss assembly is disposed on the top of the rack. The walking assembly is disposed in the rack and fixedly connected to the rack through a bearing. The power unit is disposed on the rear end of the rack. An oil tank is provided with a hole. The truss assembly is configured to place the robot into the oil tank through the hole. The walking assembly is configured to drive the robot to move along the axis of the oil tank and to prevent the robot from toppling in the oil tank. The power unit is configured to clean the inside of the oil tank. The walking assembly includes two active walking assemblies, a drive assembly, and a folding assembly.

Low inductance capacitor with annular distributed cores

A low inductance capacitor with annular distributed cores is provided, which relates to the technical field of capacitors, and includes a lower bus bar, capacitor cores and an upper bus bar. Currents accessed from lower connection terminals flow to a closed end of the lower bus bar along copper bar connecting plates, and flow to the upper bus bar through the capacitor cores, and then flow out from upper connection terminals to form a loop. And positions of the copper bar connecting plates are in one-to-one correspondence with positions of the capacitor cores, and flow directions of the currents are opposite.

Liquid distributing valve

A liquid distributing valve includes a housing, an oil supply passage, an oil storage valve and a two-position three-way valve. The oil storage valve is separated into an oil storage chamber and an oil pressing chamber by a piston, and the oil storage chamber is in communication with an oil discharge port and has a spring pressing against the piston. The two-position three-way valve includes a valve body cavity having an oil inlet in communication with the oil supply passage, a valve core and a valve seat having a core hole in communication with the oil storage chamber via a bypass oil passage. When the valve core is at one position, the oil inlet is blocked off, and the oil pressing chamber is in communication with the oil storage chamber. When the valve core is at another position, the core hole is blocked off, lubricant enters the oil inlet.