Automatic air adjusting device

The utility model belongs to the technical field of the selection by winnowing production of crystal silicon piece cutting sword material, concretely relates to automatic air adjusting device. Including air chamber and fan to and be used for connecting the two ventilation pipe, be equipped with automatic adjustable air valve and pressure transmitter in proper order on the ventilation pipe, air chamber is last to install online particle size analyzer, still includes PLC control system and man -machine interface, online particle size analyzer, automatic adjustable air valve and pressure transmitter and man -machine interface are connected with the PLC control system electricity respectively. The utility model discloses during the use, operating personnel only needs to detect the circumstances according to online particle size analyzer granularity in the control room, and the interior wind pressure size of ventilation pipe is monitored to the automatic control adjustable air valve aperture ...

Method for detecting 1Uv chromosome of aegilops variabilis and molecular marker used by method

The invention discloses a method for detecting an aegilops variabilis 1Uv chromosome and a molecular marker used by the method. The molecular marker for identifying the 1Uv chromosome of the aegilops variabilis is a DNA fragment A and/or a DNA fragment B; the DNA fragment A is a DNA fragment A, a DNA fragment B and/or a DNA fragment C; the DNA fragment B is a DNA fragment D and/or a DNA fragment E; the nucleotide sequences of the DNA fragment A, the DNA fragment B, the DNA fragment C, the DNA fragment D and the DNA fragment E are shown as SEQ ID NO: 3, SEQ ID NO: 6, SEQ ID NO: 9, SEQ ID NO: 12 and SEQ ID NO: 15 in sequence. The method can be used for identifying whether the chromosome of the plant to be detected contains the aegilops variabilis 1Uv chromosome or not, has the characteristics of rapidness, low cost, less limitation and the like, and can greatly improve the breeding efficiency. The method has great application value.

Energy obtaining circuit for series-connected IGBT dynamic voltage balancing control

The invention relates to an energy obtaining circuit for series-connected IGBT dynamic voltage balancing control. The energy obtaining circuit comprises an RCD buffer circuit energy obtaining circuit and a static resistor energy obtaining circuit, wherein the RCD buffer circuit energy obtaining circuit obtains energy from a capacitor of an RCD buffer circuit connected with an IGBT in parallel, and the static resistor energy obtaining circuit obtains energy from a static resistor connected with the IGBT in parallel. The RCD buffer circuit energy obtaining circuit and the static resistor energy obtaining circuit respectively achieve collected output through an output diode. Switching losses of the IGBT are converted into electric energy necessary for control systems. According to the energy obtaining circuit, a stable direct current power supply is provided, the control circuit complexity degree and cost are reduced, system stability is improved, meanwhile, the impact of overvoltage and large ...

Hearth maintenance lifting platform inclination alarm device

The utility model discloses a hearth maintenance lifting platform inclination alarm device which comprises a lifting platform body, a positioning block is fixedly connected to the bottom of the lifting platform body, a distance measuring sensor body is arranged at the bottom of the positioning block, and a positioning groove used in cooperation with the distance measuring sensor body is formed in the bottom of the positioning block. Through cooperative use of the lifting platform body, the positioning block, the distance measuring sensor body, the positioning groove, the fixing mechanism, the opening, the reinforcing mechanism, the positioning rod and the movable groove, the problem that an existing hearth maintenance lifting platform inclination alarm device is inconvenient to install distance measuring sensors is solved; the hearth maintenance lifting platform inclination alarm device solves the problems that an operator cannot conveniently detect and maintain a distance measuring sensor ...

Iron phosphate three-level material heating device and heating method thereof

The invention relates to a heating device and a heating method thereof, in particular to an iron phosphate three-level material heating device and a heating method thereof. According to the device, hot gas and materials are mixed through a first-stage material mixer, a second-stage material mixer and a third-stage material mixer and then are subjected to gas-solid separation through a first-stage dust remover, a second-stage separator and a third-stage separator, the hot gas and the materials are in direct contact for heat exchange, and power conveyed by airflow of the whole system depends on an induced draft fan of a negative pressure suction device. The hot gas enters the system from the hot gas inlet and is finally discharged from the negative pressure suction device, and the temperature is simple and easy to control; solid materials are discharged from the bottom of the third-stage material mixer after being subjected to three-stage heating from the first-stage material mixer, and conical ...

Protective device of emergency electricity-taking connector

The invention discloses a protection device for an emergency electricity-taking connector, which comprises a protection device main body for the emergency electricity-taking connector to be inserted, and is characterized in that a tail clamping mechanism for locking the emergency electricity-taking connector is arranged outside the protection device main body. The tail clamping mechanism is arranged outside the protection device main body, and the external tail clamping mechanism is used for locking the emergency power-taking connector, so that the situation that the emergency power-taking connector can be unlocked only by means of a special unlocking tool due to the fact that the emergency power-taking connector is clamped by a terminal lug in a male end sheath is avoided, and the tail clamping mechanism outside the protection device main body can be unlocked by the aid of the special unlocking tool. The emergency electricity-taking connector can be directly locked, unlocking can be completed ...

Automatic control method suitable for hourly average value of SO2 in purified flue gas

The automatic control method is suitable for the hourly average value of SO2 in purified flue gas. In the existing SO2 mean value control process, the concentration of SO2 needs to be controlled by manually starting and stopping a pump, the operation amount is relatively large, the final hourly mean value control of SO2 is not facilitated, and the risk that environmental protection parameters exceed the standard exists. The method comprises the following steps: (1) a real-time mean value algorithm block: calculating a weighted arithmetic mean of an input sample in a flowing manner according to a value of TW, namely a time range, by adopting an STATISTICS algorithm built in an OVATION system; (2) an equipment operation time algorithm block, (3) internal logic: performing pump starting operation by adopting a combination mode of a real-time mean value, a real-time value and a pump operation mode to obtain a pump starting condition; (4) a control method of the PH value of the slurry and a ...

Method for synthesizing multifunctional composite water treatment agent

The invention relates to a method for synthesizing a multifunctional composite water treatment agent. The method is characterized by comprising the following steps: preprocessing a molecular sieve, immersing the molecular sieve by 1mol/L hydrochloric acid in a volume ratio of 1:10 for 24h, and filtering and drying the molecular sieve for standby use; grafting, cross-linking, pouring the product into a beaker, regulating the pH value to 8 to 9 by 5% NaOH, filtering, washing by acetone, draining, and drying in vacuum to obtain the product. The novel water treatment agent, which is prepared by loading grafted chitosan and DMC onto the molecular sieve, has a good effect for treating domestic sewage, the removal rate of lead is 98.24 percent, the removal rate of nickel is 93.04 percent, the removal rate of mercury is 74.87 percent, and the COD (chemical oxygen demand) is 98.33 percent.

Crane suspension arm guide mechanism for building construction

The invention discloses a crane jib guide mechanism for building construction, which comprises a mounting frame, a rotating shaft is rotatably arranged in the middle of two sides in the mounting frame, a top block is arranged on one side of the rotating shaft, a ratchet gear is arranged on one side of the outer side of the rotating shaft, and a winding shaft is arranged in the middle of the outer side of the rotating shaft. The outer side of the winding shaft is sleeved with a traction rope and a protection rope, and one end of the protection rope is provided with a top block. The guide sleeve capable of limiting is arranged at the bottom of the mounting frame, when the traction rope is moved and hoisted, the tail end of the traction rope is extruded and supported through the eight sets of guide wheels, so that the traction rope always moves on the same straight line during moving, shaking of the traction rope can be greatly reduced through the action of the guide sleeve, and the hoisting ...

Feed liquid distributor and scraper evaporator

The invention discloses a feed liquid distributor and a scraper type evaporator, and relates to the technical field of evaporation equipment, the feed liquid distributor comprises a distributor body and at least one scraper, the distributor body is used for being arranged in an evaporation barrel and fixedly connected with a scraper rotating shaft, and a first annular gap is formed between the distributor body and the inner wall of the evaporation barrel of the scraper type evaporator; the first annular gap is used for being communicated with a feeding port in an evaporation barrel of the scraper type evaporator, the scrapers are located in the first annular gap and fixedly connected with the outer wall of the distributor body, and the distances between the outer edges, away from the distributor body, of the scrapers and the inner wall of the evaporation barrel of the scraper type evaporator are the same. The distributor body is driven to rotate by virtue of the scraper rotating shaft, ...

Cyclone anti-blocking device and anti-blocking desilting method

According to the anti-blocking device and the anti-blocking desilting method for the swirler, when the load is high and the sulfur content is high, due to the fact that an existing swirler is frequently blocked and cannot be automatically cleaned, a power plant is shut down and overhauled, safe and stable operation of a desulfurization system is seriously affected, and meanwhile a large amount of manpower and material resources are consumed during maintenance. The invention relates to an anti-blocking and dredging method for a cyclone, which comprises the following steps: firstly, limestone slurry flows in from a limestone slurry inlet and is filtered by a filter plate, and the filtered limestone slurry flows out from a limestone slurry outlet through a slurry passing port. When the pressure of the space of the filter plate on one side pushes the filter plates to move by a certain distance, the travel switch is triggered, the scraper is driven by the motor and the transmission mechanism ...

Instrument for testing response characteristic of detector surface, and testing method thereof

Intelligent identification method for gate accidents of urban mass transit

The invention relates to an intelligent identification method for gate accidents of urban mass transit. According to the intelligent identification method, diffuse reflection infrared sensors are reasonably arrayed on a card wiping gate; detection data is conveyed into a PC (Personal Computer) for training of a neural network so as to distinguish adults, children and objects; an intelligent identification model is established to detect fare evasion. Compared with a traditional gate, the gate with the identification method has an intelligent identification function; the gate can identify whether passengers passing through the gate normally pass through or abnormally pass through. Current gates with the intelligent identification function can carry out logic judgment according to a condition of shielding a sensor in the aspects of time and space by movement individuals and the identification effect on some movement individuals abnormally walking is not ideal. Compared with the prior art, ...

Economical and energy-saving type iron phosphate drying and roasting system and method

The invention provides an economical and energy-saving type iron phosphate drying and roasting system. The system comprises a drying mechanism, a heating and roasting mechanism and a cooling mechanism. Compared with the prior art, the economical and energy-saving type iron phosphate drying and roasting system provided by the invention has the advantages that the materials are heated and even roasted in a manner that high-temperature airflow is in direct contact with the materials, the heating efficiency is high, and the heating load of the roasting furnaces can be effectively reduced, so that the number of the roasting furnaces is reduced, the occupied area is reduced, and the device investment is reduced; and the heat of the high-temperature material is recovered by adopting a manner of directly contacting the material with the airflow, so that high efficiency and energy conservation are realized, and the conventional indirect air cooling or water cooling process can be replaced.

Good oxygen reflux unit of waste water treatment

The utility model discloses a good oxygen reflux unit of waste water treatment, including wastewater disposal basin, good oxygen pond, advection pond and backward flow pond, the water inlet and the wastewater disposal basin in good oxygen pond are linked together, and the water inlet in advection pond sets up in the lower part of advection pond one side, and the delivery port in advection pond sets up in the upper portion of advection pond opposite side, and the delivery port in good oxygen pond is linked together through the pipeline with the water inlet in advection pond, the height that highly is greater than the water inlet in advection pond of the delivery port in good oxygen pond, the water inlet in backward flow pond is linked together through the pipeline with the delivery port in advection pond, and the delivery port in backward flow pond is linked together through the pipeline with the water inlet in good oxygen pond. The utility model discloses can effectively adjust the waste ...

Transparent vehicle-mounted digital instrument controller and display brightness controlling method thereof

The invention relates to a transparent vehicle-mounted digital instrument controller and a display brightness controlling method of the transparent vehicle-mounted digital instrument controller. According to the transparent vehicle-mounted digital instrument controller and the display brightness controlling method of the transparent vehicle-mounted digital instrument controller, a transparent display screen is used, external light signals are collected through a light detection sensor, light and display brightness corresponding levels are set in the controller, in the use process, by adjusting the display brightness under the current light intensity, the controller can automatically set matching data of the display brightness under different degrees of environment brightness, and a display effect most suitable for a user is achieved. The brightness of a transparent vehicle-mounted digital instrument varies with the external light, so that the visual effect for people is better. By means ...

Preparation method of lithium fluorocarbon cell positive electrode

The invention discloses a preparation method of a lithium fluorocarbon cell positive electrode, a craft material comprises a base material, a conductive agent, a dispersant and a binder, The preparation method comprises the following steps: adding the dispersant in mixed liquor of pure water and the binder and then stirring; adding grinded conductive agent which is passed through a molecular sieve with 200 meshes in the mixed liquor and stirring; adding the base material in the mixed liquor and stirring; roasting a slurry at constant temperature for a certain time and adding alcohol for performing demulsification, employing a hot rolling mode for rolling the slurry to a film with thickness of 0.2-1.0mm; and then compacting the film on a nickel mesh current collector. According to the invention, the manufactured lithium fluorocarbon cell positive electrode has better conductivity, the dispersibility of fluorocarbon in pure water is stronger, the specific energy of the lithium fluorocarbon ...

Iron phosphate two-stage material cooling and heat recovery device and method thereof

The invention discloses an iron phosphate two-stage material cooling and heat recovery device and a method thereof, relates to a cooling and heat recovery device, and provides an iron phosphate material cooling and heat recovery device and a method thereof in order to overcome the defects that a large amount of cooling water is consumed and heat cannot be recovered in a traditional mode. According to the device, air or nitrogen dehumidified by activated carbon is introduced into the device, the air or nitrogen is mixed with roasted iron phosphate in the device for heat exchange, the air or nitrogen is heated in the heat exchange process, and the heated air or nitrogen can be recycled, continuously heated and dedusted and then used for drying and dewatering in the production process of the iron phosphate. And after heat exchange, the iron phosphate is cooled to the required temperature and then is discharged out of the roasting system. The method and the equipment provided by the invention ...

Cleaning device and cleaning method for filter loading net of slurry circulating pump of absorption tower

The invention relates to an absorption tower slurry circulating pump filter screen cleaning device and a cleaning method, and provides a cleaning device which can thoroughly clean a filter screen in a non-stop state of an absorption tower, has adjustable filter efficiency, avoids influence on power generation power and caused generator stop accidents after the filter screen is blocked, and solves the problem that the filter screen cannot be blocked after the filter screen is blocked. A driving device is arranged on one side of the filter screen, the driving device is connected with the filter screen in a sliding mode, four wedge blocks are arranged on one side of the filter screen, each wedge block is connected with the driving device in a sliding mode, and each wedge block is connected with the filter screen in a sliding mode at the same time. Four cleaning plates are arranged on the other side of the filter screen, each cleaning plate is connected with the filter screen in a sliding mode ...

Device and method for coiled material centering and diameter measuring

The invention relates to the filed of coiled profile supplied to a machine and diameter measurement, in particular to a device and a method for coiled material centering and diameter measuring. The device comprises a dolly, a hydraulic cylinder, a mandril and a bracket. The hydraulic cylinder is fixed on the dolly which can move leftwards and rightwards; the mandril is fixed on the piston of the hydraulic cylinder; and the bracket is fixed on the top of the mandril. The device is characterized by also comprising a displacement sensor A, a photoelectric sensor B, a photoelectric sensor C, an analog/digital converter and a PLC; the displacement sensor A is fixed inside the mandril; linear relation exists between position signals generated by the displacement sensor A and the movement distance of the mandrill; the photoelectric sensor B and the photoelectric sensor C are fixed above the bracket and positioned on the same horizontal line; and the displacement sensor A, the photoelectric sensor ...

Control method for quickly starting coal pulverizing system

The invention discloses a control method for quickly starting a coal pulverizing system. Manual participation is still needed in the actual work starting process, the whole starting process lasts too long, and the requirement for peak regulation of a unit cannot be met. The method comprises the following steps: judging an automatic starting condition of the coal mill; when the automatic starting condition of the coal mill is met, activating a sequence control function block in a DCS (Distributed Control System), and triggering a starting instruction; after the coal mill automatic starting instruction is executed and fed back, a cold air control valve is opened, the fourth step is executed after starting succeeds, and the third step is stopped after starting fails; a hot air control valve is opened, a coal mill separator motor is started, the fifth step is executed after feedback conditions are met, and the fourth step is stopped if feedback conditions are not met; starting the coal mill ...

Device and method for coiled material centering and diameter measuring

The invention relates to the filed of coiled profile supplied to a machine and diameter measurement, in particular to a device and a method for coiled material centering and diameter measuring. The device comprises a dolly, a hydraulic cylinder, a mandril and a bracket. The hydraulic cylinder is fixed on the dolly which can move leftwards and rightwards; the mandril is fixed on the piston of the hydraulic cylinder; and the bracket is fixed on the top of the mandril. The device is characterized by also comprising a displacement sensor A, a photoelectric sensor B, a photoelectric sensor C, an analog/digital converter and a PLC; the displacement sensor A is fixed inside the mandril; linear relation exists between position signals generated by the displacement sensor A and the movement distance of the mandrill; the photoelectric sensor B and the photoelectric sensor C are fixed above the bracket and positioned on the same horizontal line; and the displacement sensor A, the photoelectric sensor ...

Method for manufacturing nano hybrid resin diamond lines

The invention belongs to the technical field of diamond line manufacturing, and relates to a method for manufacturing resin diamond lines, in particular to the method for manufacturing nano hybrid resin diamond lines which are developed independently. According to the method, raw materials comprising, by weight, 42-54wt% of resin adhesives, 16-20 wt% of diamond abrasives, 9-12 wt% of nanofiller and 20-27 wt% of organic solvents are used for preparing resin mixed liquid, then procuring and take-up curing are conducted sequentially, and the nano hybrid diamond line finished products are obtained. According to the method, the production cost is low, the speed is high, the advantages of energy saving, environmental protection and the like are achieved, particularly, the abrasive resistance and the heat resistance of the adapted resin mixing liquid and the holding force of abrasive particles are obviously improved, the product quality of the resin diamond lines is further improved, and the resin ...

Process for producing chitosanase carrier and fixing method for the chitosanase

The invention relates to a method for preparing a carrier of endo-chitosanase and a method for fixing the endo-chitosanase. Fiber ribbons of cotton obtained by treatments by NaOH, glacial acetic acid, paratoluensulfonyl chloride and pyridine can be used as the carrier of the endo-chitosanase. Adopting the technical proposal of the invention has the advantages that immobilized enzyme is convenient for being separated from products in a liquid system after a reaction, and can be repeatedly used after the immobilized enzyme is taken out; compared with free enzyme, after the enzyme is immobilized, the enzyme can be easily separated from substrate and the products, and can carry out column packing continuous reactions in a long term; residue of the enzyme can not be remained in a product of Chitosan oligosaccharide solution so as to improve the quality of the chitosan oligosaccharide; and the enzyme has high stability and longer service life and retention period, and can be repeatedly used, ...

Network abnormal behavior protection method and device, computer equipment and storage medium

The invention relates to a network abnormal behavior protection method and device, computer equipment, a storage medium and a computer program product. The method can be applied to the technical field of cloud security, such as a scene in which a client server is protected through a cleaning center and a cloud server. The method comprises the following steps: receiving a data request corresponding to a target network segment forwarded by a network operator; acquiring protection information which corresponds to the network address and is generated by the client server according to the service requirement; performing data cleaning on the data request based on the protection information to obtain a cleaned data request; and sending the cleaned data request to a cloud server to instruct the cloud server to perform data filtering on the cleaned data request according to the protection information, obtaining a target data request after the data request of the abnormal behavior type is filtered ...

Instrument for testing response characteristic of detector surface, and testing method thereof

The invention is the response tester of the detector surface and the testing method. The tester comprises the photic focusing system, the XY axis position control platform, the signal amplifying and collecting system, the control and displaying systems. The computer separately connects and controls the I/O end and A/D converter; the I/O end connects and controls the X, Y axis driving circuit and the semiconductor laser; the X, Y axis step-by-step driving circuit connects and controls the X, Y step-by-step electrical machines to control the dimensional platform; the beam of the semiconductor laser passes through the focusing drawtube with 0.1mm diameter to form the facula with the diameter less than 0.1mm; the facula irradiates on the detector surface of the XY dimensional displacement platform to produce the corresponding electric signals; the detector surface connects the A/D converter through the amplifier; the electrical signal is amplified and is converted into the data signal by the ...

Process for producing chitosanase carrier and fixing method for the chitosanase

The invention relates to a method for preparing a carrier of endo-chitosanase and a method for fixing the endo-chitosanase. Fiber ribbons of cotton obtained by treatments by NaOH, glacial acetic acid, paratoluensulfonyl chloride and pyridine can be used as the carrier of the endo-chitosanase. Adopting the technical proposal of the invention has the advantages that immobilized enzyme is convenientfor being separated from products in a liquid system after a reaction, and can be repeatedly used after the immobilized enzyme is taken out; compared with free enzyme, after the enzyme is immobilized, the enzyme can be easily separated from substrate and the products, and can carry out column packing continuous reactions in a long term; residue of the enzyme can not be remained in a product of Chitosan oligosaccharide solution so as to improve the quality of the chitosan oligosaccharide; and the enzyme has high stability and longer service life and retention period, and can be repeatedly used, and ...

Hollow mesoporous ruthenium nanoparticles as well as green controllable preparation method and application thereof

The invention discloses hollow mesoporous ruthenium nanoparticles and a green controllable preparation method and application thereof.The method comprises the steps that a ruthenium source and a nanometer template agent with a certain shape are added into deionized water according to a certain proportion, ultrasonic sufficient dispersion is conducted, a certain amount of reducing agent is added, centrifugal washing is conducted after a reaction is conducted for a certain time at a certain temperature, and the hollow mesoporous ruthenium nanoparticles are obtained; compared with the prior art, the method has the advantages that the use of dangerous chemicals is avoided, the dependence on additives is overcome, and the hollow mesoporous ruthenium nanoparticles with regular morphology and uniform particle size are prepared in a simple and controllable manner in the nanoparticle preparation process. The nano ruthenium with the structure has excellent photothermal conversion performance, and ...

Convenient energy-saving healthcare mouse

The invention relates to a convenient energy-saving healthcare mouse comprising a mouse body and a mouse cable. The lateral side of the shell of the mouse body is provided with a clickable key, and an adjustable heightening base is arranged at the bottom of the shell. A mouse power source switch key is arranged at the front end of the shell above the mouse body, and a mouse driving circuit and a mouse power source switch control-circuit are embedded in the shell. The convenient energy-saving healthcare mouse could be a wired mouse or a wireless mouse, cutoff of the mouse power source switch is facilitated when a computer user has no operation on the mouse for a long time, especially for being the wireless mouse, standby time is greatly improved and service lives of the mouse and a battery are prolonged.

Hepatocellular carcinoma CT image segmentation method based on channel attention

The invention relates to a hepatocellular carcinoma CT image segmentation method based on channel attention, and the method comprises the steps: constructing a segmentation network for liver and tumor regions, and replacing a common convolution layer with a residual module on the basis of a U-Net coding and decoding structure, so as to improve the training speed and precision of the network; an attention mechanism is added in a decoder stage, and importance and interdependence of different channels in the feature map are fully considered; meanwhile, feature maps output by the decoder at each stage are up-sampled to the size of an original map through a depth supervision module, and are spliced with feature maps output at the last stage, so that feature loss is prevented; and two same segmentation networks can be used for segmenting the liver region of interest and segmenting the tumor cells respectively. According to the method, a better segmentation effect is obtained under the condition ...