Jaw type stone crusher

The invention relates to the field of mining equipment and in particular relates to a jaw type stone crusher. The jaw type stone crusher comprises a rack and a movable jaw group arranged on the rack, wherein the rack consists of a rack main body and a fixed jaw frame arranged at the front end in the rack main body, the movable jaw group is mounted on the rack main body behind the fixed jaw frame, and a crushing cavity is formed between the movable jaw group and the fixed jaw frame. According to the jaw type stone crusher disclosed by the invention, a fixed jaw lining plate is flexibly connected and fixed together with a fixed jaw body by virtue of a fixed jaw connecting structure, and a movable jaw lining plate is flexibly connected and fixed together with a movable jaw body by virtue of a movable jaw connecting structure, so that the jaw type stone crusher has the advantages of reducing vibration of a machine body and ensuring safety production of the equipment.

Jaw type stone crusher

The invention relates to the field of mine equipment and particularly relates to a jaw type stone crusher. The jaw type stone crusher comprises a frame, as well as a driving unit, a moving jaw group, a discharging hole regulating mechanism and a moving jaw tensioning cushioning mechanism which are arranged on the frame, wherein the driving unit is in transmission and connection with the moving jaw group, the discharging hole regulating mechanism pushes against the moving jaw group, and the moving jaw tensioning cushioning mechanism is connected with the moving jaw group; and the moving jaw group of the jaw type stone crusher is convenient to disassemble and assemble.

Method for measuring phthalic acid ester (PAE) in water-based adhesive for tobacco

The invention belongs to tobacco field, especially relating to a method for measuring phthalic acid ester (PAE) in water-based adhesive for tobacco. The method comprises the following steps: extracting phthalic acid ester (PAE) in water-based adhesive for tobacco by acetone, measuring by gas chromatography, using HP-5 or an equivalent chromatographic column, using a flame ionization detector (FID) and taking benzyl benzoate as an internal standard substance. The method for measuring phthalic acid ester (PAE) in water-based adhesive for tobacco provided by the invention is accurate in measurement, simple in operation, high in sensitivity and good in repeatability, which is applicable to carrying out qualitative and quantitative measurement on phthalic acid ester (PAE) in water-based adhesive for tobacco for technicists in enterprises of tobacco field and tobacco bonding adhesive and fills up the technical gap in the field.

Cyclone separator

Pressure detection device of paper sheet air permeability detector

The invention provides a pressure detection device of a paper sheet air permeability detector. The pressure detection device is characterized by comprising a cuboid-shaped framework, wherein a cavity opening of an inner cavity of the framework is matched with a testing opening of the air permeability detector in shape; a sealed bottom plate is arranged on the lower surface of the framework; the sealed bottom plate is provided with a plurality of micro-pores; a sealed cushion is arranged at an edge opening of the upper surface of the framework; a connector for connecting an external pressure meter is formed in the side wall of one side of the framework. The pressure detection device provided by the invention reasonably utilizes the common points of all instruments and is applicable to various paper sheet air permeability detectors with different structures; the pressure detection device can be used for detecting a measurement pressure of each paper sheet air permeability detector which is ...

Compound pendulum jaw type crusher

The invention relates to the field of mine equipment and particularly relates to a compound pendulum jaw type crusher. The compound pendulum jaw type crusher comprises a frame, as well as a driving unit, a moving jaw group, a discharge hole regulating mechanism and a moving jaw tensioning cushioning mechanism which are arranged on the frame, wherein the frame comprises a frame main body, as well as a fixed jaw frame arranged at the front end in the frame main body and a toggle plate frame arranged at the back end in the frame main body, the moving jaw group is mounted on the frame main body between the fixed jaw frame and the toggle plate frame, and a crushing cavity is formed between the moving jaw group and the fixed jaw frame; the driving unit is in transmission and connection with the moving jaw group, the discharge hole regulating mechanism and the moving jaw tensioning cushioning mechanism are mounted on the toggle plate frame, the front end part of the discharge hole regulating mechanism ...

Method for determining content of phenolic antioxidant for tobacco hot melt adhesive

The invention relates to a method for measuring the content of a phenolic antioxidant for a tobacco hot melt adhesive. The method is characterized by comprising the steps of firstly ultrasonically extracting the phenolic antioxidant in a tobacco hot melt adhesive sample by virtue of tetrahydrofuran, then adding a C18 dispersive solid-phase extraction agent and a diluting solvent, sequentially carrying out vortex vibration and centrifugal separation, analyzing a supernate filtering membrane by virtue of an ultra performance liquid chromatography instrument, and quantitatively determining the content of the phenolic antioxidant in a hot melt adhesive sample solution by virtue of an external standard method. The method has the specific advantages that (1) aiming at the properties of small dead volume and high sensitivity of the UPLC (ultra performance liquid chromatography) instrument, a sample pretreatment method is developed in a targeted manner, and C18 bonded silica gel serving as the ...

Automatic and random sample split-charging device for cigarette inspection

The invention relates to an automatic and random sample split-charging device for cigarette inspection, which is characterized by comprising a blanking coding mechanism and a bag-taking packaging mechanism, wherein the bag-taking packaging mechanism is positioned below the blanking coding mechanism, and the blanking coding mechanism comprises a left hopper, a right hopper, a blanking passage, an electromagnet, a lifting plate, a photoelectric detector and a code sprayer nozzle, wherein the left hopper and the right hopper are used for containing samples, the blanking passage is positioned below the left hopper and the right hopper and comprises arc-shaped blanking plates at both sides, a front baffle plate and a rear baffle plate, and the electromagnet, the lifting plate and the photoelectric detector are arranged at the lower part of the blanking passage and controlled by a cylinder; and the bag-taking packaging mechanism comprises a left sucking disk, a right sucking disk, a sealing device ...

Roller bearing type eccentric sleeve mechanism

The invention discloses a roller bearing type eccentric sleeve mechanism. The mechanism comprises a central sleeve, an eccentric sleeve, a copper eccentric liner bushing and a movable cone main shaft, wherein the eccentric sleeve is mounted in the central sleeve, a gear wheel is mounted at the lower part of the central sleeve and the copper eccentric liner bushing is mounted in the eccentric sleeve; the movable cone main shaft is mounted in the copper eccentric liner bushing; a first spherical roller bearing is mounted between the movable cone main shaft and the copper eccentric liner bushing, a spherical bearing group is mounted at the lower end of the movable cone main shaft; a tapered roller bearing is arranged between the central sleeve and the eccentric sleeve, wherein the tapered roller bearing comprises an outer ring and a plurality of inner ring components; a plurality of tapered rollers are mounted in the inner ring components; a self-lubricating material layer is coated upon the ...

Method for measuring color fastness to saliva of tipping paper for cigarette

The invention relates to a method for measuring the color fastness to saliva of tipping paper for a cigarette. The method is characterized by comprising the steps of sticking the tipping paper sample with glass fiber paper soaked by simulated saliva to form a combined sample, and placing the combined sample under the pressure of a 1kg of load at the temperature of 40 DEG C; evaluating staining degree of the glass fiber paper by a colorimeter. The method is capable of better simulating the contact process between the oral cavity of the human body and the tipping paper on a cigarette filter, and is simple to operate and rapid in measurement speed; compared with a grey scale visual observation method, the method adopts the colorimeter for evaluating the staining fastness degree, so that the results are more objective and accurate, the interference of subjective mood and objective environment of people can be avoided, and the reproducibility is good.

Method for determining content of acetic acid in triacetin

The invention belongs to the technical field of tobacco, and particularly discloses a method for determining the content of acetic acid in triacetin for the tobacco. The method comprises the following steps: using methyl tert-butyl ether for diluting and extracting the acetic acid in the triacetin, adding an internal standard solution with definite concentration, performing gas chromatography-mass spectrometry analysis, and determining the amount in an internal standard method. The method disclosed by the invention overcomes the defects of sample processing and the determination method in the prior art, and optimizes the pretreatment method of samples and the detection conditions of an instrument; compared with the prior art, the method has the following excellent effects: the operation of the method is simple, convenient and accurate, the sensitivity and the precision are high, and the repeatability is good.

循环流化床锅炉复合脱硫工艺

... 本发明涉及用来脱除循环流化床锅炉燃烧后产生的烟气中的二氧化硫气体的循环流化床锅炉复合脱硫工艺。加入循环流化床锅炉内的石灰石颗粒首先在炉内床层温度下与二氧化硫反应，进行炉内燃烧脱硫，脱除一部分二氧化硫；未反应的、飞出炉外的氧化钙颗粒在增湿塔内进一步与二氧化硫反应，进行炉外增湿脱硫过程，这样构成了循环流化床锅炉的炉内燃烧脱硫和尾部增湿脱硫的复合脱硫工艺。本发明克服了循环流化床锅炉高负荷、高燃烧效率稳定运行时的燃烧温度与炉内脱硫最佳反应温度的矛盾，实现了燃烧的经济性，保障了循环流化床锅炉的环保特性。 ...

Method for determining content of formaldehyde in water-based adhesive for cigarettes

The invention belongs to the technical field of tobacco, and particularly discloses a method for determining the content of formaldehyde in a water-based adhesive for cigarettes. The method comprises the steps of: diluting a sample of the water-based adhesive for the cigarettes and extracting the formaldehyde in the sample of the water-based adhesive for the cigarettes by water; derivatizing 2,4-dinitrophenylhydrazine; using acetonitrile for volume fixation; obtaining formaldehyde-2,4-dinitrophenylhydrazone sample solution; equipping a diode array detector with a high performance liquid chromatograph; and quantificationally determining the content of the formaldehyde in the sample of the water-based adhesive for the cigarettes by an external reference method, wherein chromatographic conditions are that: a C18 chromatographic column is taken as a stationary phase, water and the acetonitrile are taken as a mobile phase, and the mobile phase comprises the components in percentage by volume ...

Extracting process for asphalt in asphalt well of dam

The invention provides a technical method for effectively extracting asphalt in an asphalt well of a dam. The method adopts a vacuum extracting principle, and comprises the steps of heating the asphalt in the asphalt well to melt the asphalt to be at a flowing state, using a container with a vacuum pump air exhaust interface at the top and an automatic check valve at the bottom, connecting the top of the container with a vacuum pump, immersing the bottom of the container into the asphalt at the flowing state, and opening the vacuum pump to extract the asphalt into the container, taking the container out, discharging the asphalt out of the asphalt well, and repeating the steps till the asphalt is completely extracted. According to the extracting process for the asphalt in the asphalt well of the dam, the asphalt in the asphalt well can be simply and effectively extracted, the displacement work of the asphalt in the asphalt well is facilitated, the operation is simple and the technology is ...

Downhole viscous liquid pumping device

The invention provides a downhole viscous liquid pumping device capable of pumping viscous liquid at the depth of a narrow space. The downhole viscous liquid pumping device comprises a body, a blow hole at the top of the device and a check valve at the bottom of the device. The body has good impermeability. The blow hole at the top of the device can be selectively connected with the atmosphere or a vacuum pump according to specific conditions. Holes drilled around the center of a bottom plane of the device serve as liquid inlets. A sealing cover plate capable of covering the liquid inlets completely is fixedly connected with a bolt, the bolt penetrates the center hole at the bottom of the device, and a cap is screwed to the bottom of the bolt, so that the check valve is formed. When the device is placed in viscous liquid to be pumped, the sealing cover plate is jacked up under pressure action of liquid outside the device, and the liquid can flow into the device. When the device is taken ...

Sample automatic-blanking and code printing device for cigarette inspection

The invention discloses a sample automatic-blanking and code printing device for cigarette inspection. The device is characterized by consisting of a left hopper, a right hopper, a blanking passage, an electromagnet, a lifting plate, photoelectric detectors and a code sprayer nozzle, wherein the left and right hoppers are used for containing cigarette samples; the blanking passage is positioned below the left and right hoppers, and consists of arched blanking plates on two sides, a front baffle plate and a rear baffle plate; and the electromagnet, the lifting plate and the photoelectric detectors are arranged on the lower part of the blanking passage and are controlled by a cylinder. The device overcomes the shortcomings of easy production of human errors, high labor intensity and low efficiency in a sample preparation process in the conventional three-point inspection of cigarette products in the industry, and can realize the automation of sample blanking, cigarette combination and cigarette ...

Method for determining content of formaldehyde in water-based adhesive for cigarettes

The invention belongs to the technical field of tobacco, and particularly discloses a method for determining the content of formaldehyde in a water-based adhesive for cigarettes. The method comprises the steps of: diluting a sample of the water-based adhesive for the cigarettes and extracting the formaldehyde in the sample of the water-based adhesive for the cigarettes by water; derivatizing 2,4-dinitrophenylhydrazine; using acetonitrile for volume fixation; obtaining formaldehyde-2,4-dinitrophenylhydrazone sample solution; equipping a diode array detector with a high performance liquid chromatograph; and quantificationally determining the content of the formaldehyde in the sample of the water-based adhesive for the cigarettes by an external reference method, wherein chromatographic conditions are that: a C18 chromatographic column is taken as a stationary phase, water and the acetonitrile are taken as a mobile phase, and the mobile phase comprises the components in percentage by volume ...

Spindle-sliding type eccentric sleeve mechanism

The invention discloses a spindle-sliding type eccentric sleeve mechanism which comprises a central sleeve, an eccentric sleeve, an eccentric copper bushing and a movable cone spindle, wherein the eccentric sleeve is mounted in the central sleeve by adopting spherical roller bearings; gears are mounted at the lower end of the central sleeve; the eccentric copper bushing is mounted in the eccentric sleeve; the movable cone spindle is mounted in the eccentric copper bushing by adopting a non-inner-ring roller bearing; a spherical bearing pack is mounted at the lower end of the movable cone spindle; the non-inner-ring roller bearing comprises an outer ring and a frame-shaped holder; a plurality of rollers are mounted in the frame-shaped holder. According to the invention, since the non-inner-ring roller bearing is mounted between the eccentric copper bushing and the movable cone spindle, the movable cone spindle can be in rotary motion and axial sliding motion, so that working requirements ...

Method for measuring acrylic acid content of polypropylene tow adhesive for tobacco

The invention belongs to the technical field of tobacco and particularly discloses a method for measuring the acrylic acid content of a polypropylene tow adhesive for tobacco. The method comprises the following steps of: extracting acrylic acid in a polypropylene tow adhesive sample for the tobacco with water; separating to obtain the solution of polypropylene tow adhesive sample; and quantificationally measuring the acrylic acid content of the solution of polypropylene tow adhesive sample by using a high performance liquid chromatograph and an ultraviolet detector by an external standard method, wherein chromatographic conditions are that: a chromatographic column is a C18 reversed-phase chromatographic column; 0.1 volume percent aqueous solution of phosphoric acid-acetonitrile is taken as a mobile phase and the volume ratio of the aqueous solution of phosphoric acid to the acetonitrile is 85:15-95:5; an elution mode is isocratic elution; the column temperature is between 20 and 40 DEG ...

Automatic and random sample split-charging device for cigarette inspection

The invention relates to an automatic and random sample split-charging device for cigarette inspection, which is characterized by comprising a blanking coding mechanism and a bag-taking packaging mechanism, wherein the bag-taking packaging mechanism is positioned below the blanking coding mechanism, and the blanking coding mechanism comprises a left hopper, a right hopper, a blanking passage, an electromagnet, a lifting plate, a photoelectric detector and a code sprayer nozzle, wherein the left hopper and the right hopper are used for containing samples, the blanking passage is positioned below the left hopper and the right hopper and comprises arc-shaped blanking plates at both sides, a front baffle plate and a rear baffle plate, and the electromagnet, the lifting plate and the photoelectric detector are arranged at the lower part of the blanking passage and controlled by a cylinder; and the bag-taking packaging mechanism comprises a left sucking disk, a right sucking disk, a sealingdevice ...

DEFIBRATION MACHINE FOR WOOD-PULP BOARD

PROBLEM TO BE SOLVED: To provide a defibration machine for wood-pulp board, having high breaking ratio, slight grinding of fiber, simple facilities, light investment, light energy consumption, applicable to production of a woven sheet by combination with tobacco sheet facilities by a roll method, having a comparatively excellent practical value, useful for producing the tobacco sheet. SOLUTION: This defibration machine for wood-pulp board is mainly constituted of a metering roll, a defibration apparatus connected to the metering roll, a fiber collecting apparatus communicating with the defibration apparatus, a blower communicating with the fiber collecting apparatus and a dusting machine communicating with the blower. The defibration apparatus decomposes the wood-pulp board into scattered fibers by a barbed roll to be rotated. The scattered fibers are collected in a fiber collecting chamber by the fiber collecting apparatus. COPYRIGHT: (C)2001,JPO ...

Mobile jaw set of jaw crusher

The invention relates to the field of mining equipment, and in particular relates to a mobile jaw set of a jaw crusher. The mobile jaw set of the jaw crusher comprises a mobile jaw body, a mobile jaw lining plate, a mobile jaw shaft assembly and a support bearing block, wherein the mobile jaw lining plate is arranged on the mobile jaw body; the mobile jaw shaft assembly is arranged in the mobile jaw body in a penetrating manner; and the support bearing block is used for positioning the mobile jaw shaft assembly. The mobile jaw set is convenient to dismantle and assemble and has a damping effect.

Preparation method of oxyclozanide

The invention discloses a preparation method of oxyclozanide and the method using 2,4-dichlorophenol which is available in the market as raw material. The preparation method comprises the following steps: performing nitrification and reduction, and finally performing condensation with 3,5,6-trichlorosalicylic acid to obtain oxyclozanide. The steps of the preparation method are simple, the route is shorter, the raw material is available, and the cost is lower, thus the preparation method is suitable to popularize and apply.

Screw pump for pumping solid particles

The invention discloses a screw pump used for pumping solid particles. The screw pump used for pumping the solid particles comprises a pump shell, a rotor and a transmission shaft, wherein the rotor is installed in the pump shell, one end of the rotor is located in a discharge outlet of the pump shell, the other end of the rotor is connected with the transmission shaft, a helix is arranged on the rotor and is formed by multiple grooves, and the cross section of each groove is trapezoid. According to the screw pump used for pumping the solid particles, the helix with the trapezoid cross sections is arranged on the rotor, power input by a motor is transmitted to the rotor through the transmission shaft, the rotor is driven to rotate, the solid particles move along the grooves and are discharged out of a pumping cavity from the discharge outlet through the helix, and direct pumping of the solid particles is achieved; due to the fact that the one end of the rotor is located in the discharge ...

Jaw fixing rack for jaw crusher

The invention relates to the field of mining equipment and in particular relates to a jaw fixing rack for a jaw crusher. The jaw fixing rack for the jaw crusher comprises a jaw fixing body, and a jaw fixing lining plate fixed on the jaw fixing body, wherein the jaw fixing lining plate is fixedly connected to the jaw fixing body by virtue of a jaw fixing connecting structure; the jaw fixing connecting structure comprises a jaw fixing lining plate wedge block, a jaw fixing bolt, a jaw fixing nut, a spring seat, a flat washer and a disc spring; the jaw fixing bolt penetrates through the jaw fixing body; the outer end of the jaw fixing bolt is fixedly connected with the jaw fixing lining plate wedge block; the jaw fixing lining plate wedge block and the jaw fixing lining plate are pressed against each other by virtue of an inclined plane; the spring seat, the flat washer and the jaw fixing nut are sequentially arranged at the inner end of the jaw fixing bolt from interior to exterior; the disc ...

Method for measuring phthalic acid ester (PAE) in water-based adhesive for tobacco

The invention belongs to tobacco field, especially relating to a method for measuring phthalic acid ester (PAE) in water-based adhesive for tobacco. The method comprises the following steps: extracting phthalic acid ester (PAE) in water-based adhesive for tobacco by acetone, measuring by gas chromatography, using HP-5 or an equivalent chromatographic column, using a flame ionization detector (FID) and taking benzyl benzoate as an internal standard substance. The method for measuring phthalic acid ester (PAE) in water-based adhesive for tobacco provided by the invention is accurate in measurement, simple in operation, high in sensitivity and good in repeatability, which is applicable to carrying out qualitative and quantitative measurement on phthalic acid ester (PAE) in water-based adhesive for tobacco for technicists in enterprises of tobacco field and tobacco bonding adhesive and fills up the technical gap in the field.

Jaw crusher rack

The invention relates to the field of mining equipment, and in particular relates to a jaw crusher rack. The jaw crusher rack comprises a main rack body, a fixed jaw frame and a wrist plate frame, wherein the main rack body comprises a rack base and two rack body side plates; the two rack body side plates are oppositely arranged on the rack base; and the fixed jaw frame and the wrist plate frame are arranged between the two rack body side plates. According to the jaw crusher rack, equipment vibration caused by occlusion of two jaws can be effectively reduced; and normal operation of the equipment is ensured.

Hydraulic structure disjoint filling silicone adhesive and preparation method thereof

The invention discloses hydraulic structure disjoint filling silicone adhesive, which is prepared from a component A and a component B according to a weight proportion, wherein the component A comprises 100 portions of alpha, omega-dihydroxydimethylpolysiloxane and 15 to 45 portions of calcium carbonate filler; and the component B comprises 3 to 10 portions of calcium carbonate filler, 6 to 15 portions of methyl vinyl disilane, and 3 to 10 portions of linear amino polysiloxane cross linker. After stirring and mixing according to the weight proportion, the components are separately sealed and stored; and during use, the component A and the component B are mixed according to the weight proportion and vulcanized at room temperature to form the hydraulic structure disjoint filling silicone adhesive. The hydraulic structure disjoint filling silicone adhesive has the characteristics of room temperature vulcanization, double components, self leveling, adjustable curing speed, low modulus, high ...

Discharging hole adjusting mechanism of jaw crusher

The invention relates to the field of mining equipment and particularly relates to a discharging hole adjusting mechanism of a jaw crusher. The discharging hole adjusting mechanism of the jaw crusher comprises a toggle plate seat and an adjusting wedge block which are arranged on a toggle plate frame, a movable jaw toggle plate seat arranged at the rear end of a movable jaw group, and a toggle plate, wherein the two ends of the toggle plate abut against the toggle plate seat and the movable jaw toggle plate seat respectively; the axial thickness of the adjusting wedge block is changed gradually and the adjusting wedge block can axially move by an external force; the movement direction of the adjusting wedge block is vertical to the supporting direction of the toggle plate; and when the adjusting wedge block moves axially, the toggle plate seat is driven by the adjusting wedge block to move along the supporting direction of the toggle plate. The discharging hole adjusting mechanism of the ...

Sample automatic-blanking and code printing device for cigarette inspection

The invention discloses a sample automatic-blanking and code printing device for cigarette inspection. The device is characterized by consisting of a left hopper, a right hopper, a blanking passage, an electromagnet, a lifting plate, photoelectric detectors and a code sprayer nozzle, wherein the left and right hoppers are used for containing cigarette samples; the blanking passage is positioned below the left and right hoppers, and consists of arched blanking plates on two sides, a front baffle plate and a rear baffle plate; and the electromagnet, the lifting plate and the photoelectric detectors are arranged on the lower part of the blanking passage and are controlled by a cylinder. The device overcomes the shortcomings of easy production of human errors, high labor intensity and low efficiency in a sample preparation process in the conventional three-point inspection of cigarette products in the industry, and can realize the automation of sample blanking, cigarette combination and cigarette ...

Heating device and heating method for asphalt in asphalt well

The invention discloses a heating method for asphalt in an asphalt well. The bottom end of an electric heating element is inserted into the asphalt; as the electric heating element radiates heat, the asphalt being contact with the electric heating element is softened and flows; at the moment, the electric heating element is controlled to be inserted into the asphalt well through an operating rod until the electric element reaches to the required buried depth; the operating rod is fixed; the electric heating element is kept to be heated in the buried depth until all of the asphalt above the buried depth are heated to the target temperature; after the heating process is completed, the electric heating element is pulled out of the asphalt well gradually through the operating rod, so that the liquid level of the asphalt in the asphalt is lowered; the asphalt well is supplemented with the asphalt. According to the heating method, the asphalt in the asphalt well can be heated effectively under ...

Gold and silver double-metal nanocluster for sulfide visual detection and preparation method of gold and silver double-metal nanocluster

The invention discloses a gold and silver bimetal nanocluster for sulfide visual detection and a preparation method thereof, and relates to the technical field of sulfide detection. The preparation method comprises the following steps: adding a 2-sulfydryl-5-benzimidazole sodium sulfonate dihydrate solution into deionized water, then adding a HAuCl4. 3H2O solution, and carrying out a stirring reaction; and adding an AgNO3 solution, stirring for reaction, and cooling to room temperature to prepare MBZS-AuAg NCs, namely the gold and silver bimetal nanocluster for sulfide visual detection. The MBZS-AuAg NCs disclosed by the invention emits fluorescence with different colors in the presence of sulfides with different concentrations, the fluorescence intensity change and the sulfide concentration are in a good linear relationship, and the sulfides can be quantitatively and visually detected in a relatively wide concentration range. The problems that an existing detection method cannot realize ...

Jaw type crusher

The invention relates to the field of mine equipment and particularly relates to a jaw type crusher. The jaw type crusher comprises a frame, as well as a driving unit, a moving jaw group, a discharge hole regulating mechanism and a moving jaw tensioning cushioning mechanism which are arranged on the frame, wherein the frame comprises a frame main body, as well as a fixed jaw frame arranged at the front end in the frame main body and a toggle plate frame arranged at the back end in the frame main body; the moving jaw group is mounted on the frame main body between the fixed jaw frame and the toggle plate frame, the driving unit is in transmission and connection with the moving jaw group, the discharge hole regulating mechanism and the moving jaw tensioning cushioning mechanism are mounted on the toggle plate frame, the front end part of the discharge hole regulating mechanism pushes against the moving jaw group, and the front end part of the moving jaw tensioning cushioning mechanism is ...

Jaw crusher

The utility model relates to a mine equipment field especially relates to a jaw crusher. Jaw crusher is including the frame to and set up driving unit in the frame, move jaw group, discharge gate adjustment mechanism and move the taut buffer gear of jaw, the frame includes the frame main part to and set up the inside front end of frame main part decide the jaw frame, and set up the bracket frame in the inside rear end of frame main part, move jaw group and install on deciding the frame main part between jaw frame and the bracket frame, move jaw group and decide the jaw and be broken chamber between putting up promptly, the driving unit with move the transmission of jaw group and link to each other, discharge gate adjustment mechanism with move the taut buffer gear of jaw and all install on the bracket frame, discharge gate adjustment mechanism's preceding tip offsets with moving jaw group, the preceding tip that moves the taut buffer gear of jaw with move the jaw and organize and be connected ...

Method for measuring acrylic acid content of polypropylene tow adhesive for tobacco

The invention belongs to the technical field of tobacco and particularly discloses a method for measuring the acrylic acid content of a polypropylene tow adhesive for tobacco. The method comprises the following steps of: extracting acrylic acid in a polypropylene tow adhesive sample for the tobacco with water; separating to obtain the solution of polypropylene tow adhesive sample; and quantificationally measuring the acrylic acid content of the solution of polypropylene tow adhesive sample by using a high performance liquid chromatograph and an ultraviolet detector by an external standard method, wherein chromatographic conditions are that: a chromatographic column is a C18 reversed-phase chromatographic column; 0.1 volume percent aqueous solution of phosphoric acid-acetonitrile is taken as a mobile phase and the volume ratio of the aqueous solution of phosphoric acid to the acetonitrile is 85:15-95:5; an elution mode is isocratic elution; the column temperature is between 20 and 40 DEG ...

Method for determining acrylic ester compound in polypropylene fiber rubber used for cigarette

The invention belongs to the field of tobacco, in particular relates to a method for determining acrylic ester in polypropylene tow filter rod moulding adhesive used for cigarette. The method includes that: normal hexane is utilized to extract acrylic ester compound in polypropylene fiber rubber used for cigarette, a GC-MS apparatus is adopted for determination, a DB-INOWAX or chromatographic column with equivalent property is adopted for separation, a mass detector is used for detection, and external standard method is adopted for quantitation. The invention provides a method for determining acrylic ester in polypropylene fiber rubber used for cigarette with accurate test, simple operation, high sensitivity and good repeatability and is suitable for tobacco industry and technical personnel which is in charge of producing adhesive used for cigarette to do qualitative and quantitative determination of acrylic ester compound in polypropylene fiber rubber used for cigarette, thus filling the ...

Compound pendulum jaw type crusher

The invention relates to the field of mine equipment and particularly relates to a compound pendulum jaw type crusher. The compound pendulum jaw type crusher comprises a frame, as well as a driving unit and a moving jaw group which are arranged on the frame; the frame comprises a frame main body, as well as a fixed jaw frame arranged at the front end in the frame main body and a toggle plate frame arranged at the back end in the frame main body; the driving unit is in transmission and connection with the moving jaw group, the moving jaw group is mounted on the frame main body between the fixed jaw frame and the toggle plate frame, and a crushing cavity is formed between the moving jaw group and the fixed jaw frame; and the compound pendulum jaw type crusher has the advantages of convenience in disassembly and assembly, and stable pendulum of the moving jaw group.

Automatic load bearing contact device for testing color fastness based on hot air circulation system temperature control

The invention discloses an automatic load bearing contact device for testing color fastness based on hot air circulation system temperature control. The automatic load bearing contact device is characterized by comprising a base plate and a temperature preservation shell, wherein the base plate in the temperature preservation shell is provided with an automatic load bearing testing mechanism which is composed of an objective detection platform and a panel-type testing weight capable of lifting or being pressed and put on the platform; the objective detection platform moves horizontally by the control of a horizontal air cylinder and can be pushed out by a starting-closing door at the other side of the temperature preservation shell; circulation hot air ducts are configured at the upper end of the temperature preservation shell and the lower part of the base plate, and hot air inlets and hot air outlets are respectively formed in the temperature preservation shell and the base plate; the ...

Jaw crusher

The invention relates to the field of mining equipment, and particularly relates to a jaw crusher. The jaw crusher comprises a rack, a driving unit, a moving jaw set, a discharge outlet adjusting mechanism and a moving jaw tensioning-buffer mechanism, wherein the driving unit, the moving jaw set, the discharge outlet adjusting mechanism and the moving jaw tensioning-buffer mechanism are arranged on the rack; the rack comprises a rack main body, a fixed jaw frame and a toggle plate frame, wherein the fixed jaw frame is arranged at the front end of the inside of the rack main body, and the toggle plate frame is arranged at the rear end of the inside of the rack main body; and the moving jaw set is arranged on the rack main body between the fixed jaw frame and the toggle plate frame, the driving unit is in transmission connection with the moving jaw set, the discharge outlet adjusting mechanism and the moving jaw tensioning-buffer mechanism are arranged on the toggle plate frame, the front ...

Cyclone separator

A cyclone separator for separating gas from solid and removing dust is composed of the cylindrical body and inlet pipe, and is characterized by that in said inlet pipe there is a louver-type concentrating unit consisting of 2-6 louver boards with 15-45 deg of inclined angle for higher separation effect.

Method for determining acrylic ester compound in polypropylene fiber rubber used for cigarette

The invention belongs to the field of tobacco, in particular relates to a method for determining acrylic ester in polypropylene tow filter rod moulding adhesive used for cigarette. The method includes that: normal hexane is utilized to extract acrylic ester compound in polypropylene fiber rubber used for cigarette, a GC-MS apparatus is adopted for determination, a DB-INOWAX or chromatographic column with equivalent property is adopted for separation, a mass detector is used for detection, and external standard method is adopted for quantitation. The invention provides a method for determiningacrylic ester in polypropylene fiber rubber used for cigarette with accurate test, simple operation, high sensitivity and good repeatability and is suitable for tobacco industry and technical personnel which is in charge of producing adhesive used for cigarette to do qualitative and quantitative determination of acrylic ester compound in polypropylene fiber rubber used for cigarette, thus fillingthe ...

Set-top box and power management method thereof

The invention discloses a set-top box, which comprises a setting module, an electric quantity acquisition module and a control module, wherein the setting module is used for setting electricity consumption warning values corresponding to a plurality of home appliances; the electric quantity acquisition module is used for transmitting a plurality of electric quantity request commands to the plurality of home appliances by a power line communication transmission protocol, and receiving a plurality of pieces of electric quantity returning information from the plurality of home appliances by the power line communication transmission protocol; and the control module is used for judging whether the electricity consumption of each home appliance exceeds a corresponding electricity consumption warning value or not, and when the electricity consumption of a certain home appliance exceeds the corresponding electricity consumption warning value, giving an alarm to prompt a user of powering the home ...

Double-rotor crushing mechanism

The invention discloses a double-rotor crushing mechanism. The double-rotor crushing mechanism comprises an installation base and two rotor groups positioned on the installation base, wherein each rotor group comprises a crushing cavity, a material storage cylinder, a material discharging cylinder, an installation frame sleeve and a rotor; the installation frame sleeve is arranged in the crushing cavity; the material storage cylinder is positioned on the installation frame sleeve; a plurality of crushing arms are arranged on the material storage cylinder; the bottom part of the material storage cylinder is sleeved with the material discharging cylinder; the rotor is arranged on the installation base; the rotor is positioned below the material discharging cylinder; the material storage cylinder and the material discharging cylinder are communicated with the upper part of the rotor by adopting a feeding channel; a plurality of material guide plates are arranged between the two rotors. According ...

Movable jaw group on jaw crusher

The invention relates to the field of mining equipment and in particular relates to a movable jaw group on a jaw crusher. A movable jaw body on the movable jaw group is erected on a supporting bearing block by virtue of a movable jaw shaft assembly, specifically, an eccentric shaft on the movable jaw shaft assembly is positioned by an inner self-aligning roller bearing to penetrate through the movable jaw body and is positioned and erected on the supporting bearing block by virtue of an outer self-aligning roller bearing; a withdrawal sleeve is arranged between the outer self-aligning roller bearing and the eccentric shaft; the outer self-aligning roller bearing and the eccentric shaft are supported and connected by virtue of the withdrawal sleeve, and a wheel-side sealing ring is fixedly connected; and during installation, the withdrawal sleeve can be hydraulically pressed by a tool, and during detachment, the withdrawal sleeve can be rapidly withdrawn by virtue of an oil-injection method ...

Testing device and testing method for leakage of paper air permeability detector

Disclosed are a testing device and testing method for leakage of a paper air permeability detector. The testing device comprises a liquid soap box, a rubber ball arranged on the liquid soap box and a soap film flowmeter formed by a glass tube with scale marks, and an air inlet tube is connected with the lower portion of the glass tube. The testing device is characterized in that a pressing branch tube is additionally arranged on the upper portion of the glass tube, and an air inflating needle barrel is connected with the other end of the pressing branch tube. The leakage condition of the paper air permeability detector can be tested through the device, and the leakage amount of the detector can be calculated. Compared with other air flow measurement equipment, the soap film flowmeter adopted in the device is low in cost and high in measurement precision. The testing method is easy to operate, visual and accurate in detection result, good in universality and capable of being suitable for ...

Hydraulic double-roll crusher and hydraulic system thereof

The invention discloses a hydraulic double-roll crusher and a hydraulic system thereof. The hydraulic double-roll crusher comprises a crusher frame, a fixed roller set, a movable roller set, a power device and a hydraulic system, wherein a protective executing mechanism and a discharge hole adjusting mechanism are arranged on the movable roller set; the protective executing mechanism comprises a hydraulic cylinder and a piston rod; the piston rod is connected with the movable roller set; the discharge hole adjusting mechanism comprises a small cylinder and a cushion block; and the small cylinder is connected with a slide block. The hydraulic cylinder with the piston rod is arranged on the movable roller set, so that the unreasonable structure that the spring serves as the protective executing mechanism in the past is changed, deviation of the movable roller set is prevented, the crusher has high safety and use performances and long service life, and the reaction sensitivity through iron ...

Shaft locating structure

The invention relates to the field of mechanical structures, and particularly relates to a shaft locating structure. The shaft locating structure comprises a shaft, an aligning roller bearing, a bearing base and a bearing end cover, wherein the aligning roller bearing is positioned and arranged in the bearing base by virtue of the bearing end cover, the shaft is positioned and arranged in the aligning roller bearing, and a withdrawal sleeve is arranged between the aligning roller bearing and the shaft in an interference manner; the outer side wall surface of the withdrawal sleeve is of a cylindrical surface which is matched with the aligning roller bearing, the inner side wall surface of the withdrawal sleeve is of a conical annular surface which is matched with the shaft, and a wheel side sealing ring is arranged between the withdrawal sleeve and the bearing end cover; the wheel side sealing ring is fixedly connected with the end part of the withdrawal sleeve, and the wheel side sealing ...

Double circulating fluidized bed flue gas desulfurizing device

A dual-circulation desulfurizing apparatus for flue gas is characterized by that it has two stages of inertial gas-solid separators for generating internal and external circulations of desulfured ashto increase the utilization rate of desulfurizer, and the separator at stage 2 is a cyclone one with concentrator at its inlet. Its advantages are high desulfurizing effect, high utilization rate of desulfurizer, low flow resistance and compact structure.

Method for determining overall migration of tipping paper for cigarette

A method for determining overall migration of tipping paper for a cigarette is characterized by including enabling a sample of the tipping paper for the cigarette to be in immersed contact with simulant water according to specific time, a specific temperature and a specific contact proportion, then transferring a simulated solution to an evaporation pan prior to evaporating to dryness, and calculating residue mass by a weight difference method so as to obtain the overall migration of the tipping paper for the cigarette by taking the water as a simulant. The method for determining the overall migration of the tipping paper for the cigarette is capable of simulating a mouth cavity and cigarette contact process and accurately determining the total mass of non-volatile matter migrated from the tipping paper for the cigarette to the simulant water.

Color fastness test automatic load bearing contact device based on closed environment temperature control

A color fastness test automatic load bearing contact device based on closed environment temperature control is characterized by comprising a bottom plate and a heat preservation shell. An automatic load bearing test mechanism is arranged on the bottom plate in a cavity of the heat preservation shell and is composed of an object carrying and detecting platform capable of moving horizontally and a flat plate type testing weight, the flat plate type testing weight is controlled to move up and down through lifting air cylinders arranged at the positions, on the two sides of the object carrying and detecting platform, of the bottom plate, the object carrying and detecting platform is controlled to move horizontally through a horizontal air cylinder, electric heating plates are arranged on the inner side of the top of the heat preservation shell and the bottom plate located in the heat preservation shell, and a temperature sensor is arranged in the cavity of the heat preservation shell. The color ...

Compound desulfurizing process of circulating fluidized bed boiler

A combined desulfurizing process for removing the SO2 gas from the flue gas generated by circualting fluidized-bed boiler is characterized by that the raw lime stone reacts with the SO2 in the bed layer of boiler to remove part of SO2 by combustion and the unreacted and escaped calcium oxide further reacts with SO2 in the moistening tower for external removal of SO2. Its advantages are low cost and optimal desulfurizing effect.