39results about How to "Guaranteed uniformity and stability" patented technology

The invention discloses a method for manufacturing a surfacing composite wear-resistant steel plate, which comprises the following steps of: tiling a steel base plate on a water-cooled platform, and compacting the steel base plate by employing front and rear side compaction devices respectively; after a weld pass is welded, opening the front and rear side compaction devices, and conveying the steel base plate for a certain distance forward through a pinch roll device; and repeating the steps for surfacing, until a flat surfacing composite wear-resistant steel plate with a high-chromium alloy wear-resistant layer is obtained on the whole steel base plate. A piece of equipment for manufacturing the surfacing composite wear-resistant steel plate applied to the method for manufacturing the surfacing composite wear-resistant steel plate comprises a portal frame, a welding device, a rear side compaction device, a front side compaction device, a water-cooled platform, a pinch roll device and a frame, wherein the rear side compaction device is arranged on the rear side of the welding device; and the front side compaction device is arranged on the front side of a welding gun of the welding device. The composite wear-resistant steel plate welded through the manufacturing method is small in deformation and high in welding quality and is not limited to specifications.

The invention provides a threshing and re-drying processing method of high-grade tobacco leaf raw materials. According to the method, tobacco leaves on the upper portion and in the middle serve as the raw materials and divided into multiple segments according the lengths of the leaves, and the total weight and the nicotine content of each segment of tobacco leaf of each portion are determined; before feeding and threshing, multiple threshing combined formulas are formed through matching according to the total feeding amount and the content of chemical components, wherein the addition amount of the tobacco leaves in the middle portion in each formula is not smaller than 30%, and the same segments of tobacco leaves of the same portion are added into the same formula; the content of the tobacco leaves on the upper portion and the nicotine content in each formula are calculated, a threshing and re-drying formula meeting feeding requirements is determined for feeding, and then threshing and re-drying start according to an existing threshing and re-drying technology to obtain the combined high-grade tobacco leaf raw materials. The method guarantees uniformity and stability of the tobacco leaves obtained after threshing and re-drying, and can provide the good-quality and uniform tobacco leaf raw materials for high-end brand cigarettes.

The invention discloses a lithium ion battery insulating coating, a preparation method and a pole piece and a lithium ion battery using the insulating coating, and belongs to the technical field of lithium ion batteries. The effective components of the lithium ion battery insulating coating disclosed by the invention is formed by inorganic powder, an adhesive and a dispersing agent, wherein the three components generate a synergistic effect to improve the uniformity and stability of the insulating coating and improve the resistance uniformity of an insulating coating layer formed by the insulating coating, and the bonding strength with an aluminum foil matrix for the pole piece is high, thereby being unlikely to drop. The preparation method of the lithium ion battery insulating coating disclosed by the invention is easy to operate and is suitable for industrialized promotion and application, the inorganic powder, the adhesive and the dispersing agent are mixed in a high speed stirring and dispersing manner, so as to improve the uniformity and stability of the insulating coating, and the insulating coating is free of such phenomena as lamination and settlement after being stored for a long term. The lithium ion battery prepared by the insulating coating disclosed by the invention is good in safety performance and is stable in electrochemical performance.

The invention discloses an electrical heating tension straightening machine for small-dimension profiled bars. The electrical heating tension straightening machine comprises an unwinding mechanism, a traction conveying mechanism, a shearing mechanism, a feeding mechanism and a tension straightening mechanism which are sequentially linearly ranked, wherein the traction conveying mechanism, the shearing mechanism, the feeding mechanism and the tension straightening mechanism are arranged on a face plate of a device main body support. The electrical heating tension straightening machine is high in automated degree, fills in the gap in industrial equipment, improves production efficiency and product quality, and reduces production labor intensity of workers.

The invention discloses a fuel droplet ignition temperature measuring device for visible experiments and belongs to the technical field of combustion experiment equipment. According to the ignition temperature measuring device disclosed by the invention, four ignition columns in symmetric distribution are arranged in a combustion chamber; the four ignition columns encircle a rectangular structure;two ignition wire fastening devices distributed at an interval are arranged on each ignition column; four arc-shaped ignition wires in symmetric distribution are mounted among the four ignition columns through the ignition wire fastening devices in a fastened manner; a through hole through which a combustion sample push mechanism penetrates is formed in one side of the combustion chamber; the push direction of the combustion sample push mechanism is parallel to the plane of the arc-shaped ignition wire and is along the central line of the four arc-shaped ignition wires. By adopting the devicedisclosed by the invention, an ignition process has good stability, the device can be repeatedly used for multiple times according to demands, high stability can be effectively maintained in a repeated use process, and precision of experiment results can be ensured.

The invention discloses a totally-dissolved deep-layer air flotation combined device and a sewage treatment method thereof, relating to the technical field of environmental protection and aiming at solving the technical problem of unstable air floatation effect of various air floatation processes so as to further effectively improve the air floatation effect. The combined device comprises a sewage tank, a drug feeding groove, a lifting pump, a totally-dissolved air floatation pot and an air floatation tank, wherein the air floatation tank with the depth of 6 to 9m, is divided into a releasing zone and a separating zone. The upper layer of the releasing zone is connected with a mud layer of the separating zone, the middle layer is a padding layer, and a releaser arranged at the lower layer is connected (communicated) with the lower part of the totally-dissolved air floatation pot by a pipeline; the upper part of the separating zone is the mud layer for discharging floating residues, a water discharging pipe arranged at the middle part is used for discharging treated water out of the air floatation tank, and a mud bucket zone arranged at the lower part is used for discharging sinking mud residues. The invention has the characteristics of stable air floatation, good effect, high COD, color and SS removing rate, good transparency of outgoing water and less drug feeding quantity.

The invention discloses early strength foam cement slurry for well cementation. The early strength foam cement slurry comprises the following components in parts by mass: 100 parts of sulphoaluminate cement, 4-12 parts of a foaming agent, 2-7 parts of a foam stabilizer, 1-3 parts of a retarder, 3-5 parts of a fluid loss agent and 30-40 parts of water. The early strength foam cement slurry provided by the invention has the advantages that the density can be adjusted within 0.55-1.40 g / cm<3>; the low-temperature strength is rapidly developed; the early strength foam cement slurry is applicable to the cementation of an oil-gas well of which the bottom-hole temperature is 4-25 DEG C.

The invention discloses a method for preparing a fresh traditional Chinese medicine motherwort preparation, comprising the following steps: artificially cultivating motherwort by modern agriculture technologies instead of wild motherwort to obtain fresh high-quality motherwort with less pesticide and heavy metal residuals and high bioactivity; washing the fresh motherwort, sterilizing the fresh motherwort with ozone water, cutting the fresh motherwort into pieces, and homogenizing the motherwort; collecting juice and sieving to obtain fresh motherwort juice; conveying the fresh motherwort juice to a container; decompressing and concentrating the juice at a temperature of 30-80 DEG C to obtain a concentrated solution of which the relative density is 1.01-1.30g / cm<3>; freezing and drying the concentrated solution to obtain fresh motherwort powder; and taking the fresh motherwort powder to prepare into the fresh motherwort preparation. The method provide by the invention is simple in steps and easy to operate; and the prepared fresh motherwort preparation reaches the standard requirements and has good stability. By using the sterilization technology with the ozone water and the freezing and drying process, the microorganism number in the preparation is greatly reduced and the active ingredients of various heat-sensitive activities are retained maximally; and meanwhile, the product yield is improved and the product cost is reduced.

The invention discloses a steaming-free aerated brick prepared by utilizing construction waste. The steaming-free aerated brick is prepared from the following components in parts by weight: 20 to 30 parts of the construction waste, 30 to 60 parts of pulverized fuel ash, 30 to 50 parts of cement, 5 to 10 parts of desulfurized dihydrate gypsum, 3 to 8 parts of quicklime, 0.5 to 1 part of aluminum powder paste, 4 to 6 parts of ultra-light ceramic particle, 1 to 5 parts of silica aerogel, 1 to 2 parts of naphthyl sulfonate formaldehyde condensate, 2 to 5 parts of retarding agent and 30 to 50 parts of water. The invention also discloses a preparation method of the steaming-free aerated brick. The steaming-free aerated brick made by using the method is light in weight, good in heat preservation performance and heat insulation performance, high in shock resistance ability and excellent in compression resistance performance, and has certain high temperature resistance performance, good sound insulation performance and high adaptability; further, the preparation method is simple; the production cost is low.

The invention discloses a method for preparing an AGM separator with high specific surface area. The method comprises the following steps: preparing glass fiber slurry from water and glass fibers, adding water for diluting, and regulating the pH value; performing negative pressure suction filtration and dehydration so as to obtain a primary molded wet separator; and applying nanosized silica aqueous dispersion to the surface of the wet separator, performing negative pressure suction filtration and dehydration so as to obtain a secondary molded wet separator, and drying, thereby obtaining the AGM separator with high specific surface area. The AGM separator with high specific surface area disclosed by the invention can achieve the effects of improving the stability and uniformity of a colloidal network structure and improving the layering phenomenon of electrolyte; meanwhile, the problem that the AGM separator is low in wet elasticity and low in assembly pressure retaining capacity is effectively solved, the pore size of the separator can be greatly reduced, the performance of preventing short circuit caused by dendrite puncture can be further improved, capacity degradation of a storage battery is retarded, and the cycle service life of the storage battery is prolonged.

The invention discloses an energy-storage self-luminous epoxy resin mixture for roads as well as a preparation method and application thereof. The energy-storage self-luminous epoxy resin mixture comprises the following components: coarse aggregate, fine aggregate, epoxy resin, a toughening agent, a curing agent and fluorescent powder, wherein the nominal particle size of the coarse aggregate is greater than 2.36 mm, the nominal particle size of the fine aggregate is 0.15-2.36 mm, and the nominal particle size of the fluorescent powder is less than 0.15 mm; wherein the epoxy resin accounts for6.0%-10.0% of the total mass of the coarse aggregate and the fine aggregate, the flexibilizer accounts for 0.4%-1.0% of the total mass of the coarse aggregate and the fine aggregate, the curing agentaccounts for 1.0%-2.5% of the total mass of the coarse aggregate and the fine aggregate, and the fluorescent powder accounts for 5.0%-10.0% of the total mass of the coarse aggregate and the fine aggregate. The advantages of the fluorescent powder are achieved by applying the colorless and transparent epoxy resin, so that the epoxy resin mixture is good in light transmission and ideal in luminouseffect, and the proportion of the epoxy resin can meet the requirement of pavement performance and has a protection effect on the fluorescent powder; the fluorescent powder with the nominal particle size smaller than 0.15 mm is adopted for replacing fine aggregate with the particle size smaller than 0.15 mm, so that the mechanical property of the pavement structure is not affected, and the beneficial effects of energy storage and light emitting are achieved.

The invention belongs to the technical field of rail transit, and provides a multistage height adjustment bolt-free fastener system. The multistage height adjustment bolt-free fastener system comprises an embedment base (1), an elastic strip (3), an insulating gauge block (4) and an under-rail elastic cushion plate (5), wherein an adjustment sleeve (2) is arranged on the embedment base (1), an elastic strip installation hole (9) is formed in the adjustment sleeve (2) in an eccentric mode, the position of the elastic strip installation opening (9) which is formed in the eccentric mode in the embedment base (1) is adjusted by adjusting the position of the adjustment sleeve (2) on the embedment base (1), and the height of a steel rail is adjusted under the rail when the adjustment sleeve is matched with an under-rail height adjustment plate (13) arranged between the steel rail (6) and a track bed (21). The aim of adjusting the height of the bolt-free fastener system under the steel rail is achieved by adjusting the position of the elastic strip, and the multistage height adjustment bolt-free fastener system has the advantages of being simple in structure and convenient to install and adjust.

The invention discloses a mild dredging agent for kitchen pipelines, belongs to the technical field of pipeline cleaning, and solves the problem of pipeline damage due to alkalinity of current commonpipeline dredging agents and local overtemperature of pipelines. Ferrous nitrate and ferric nitrate produce nano ferroferric oxide in an alkaline system to have a cooling permeation effect on blockedpipelines, blocking parts are contracted with cold, and block is hindered. A selenium-containing agent is added and can react with ions such as iron at low temperature to produce metal selenide, the rapid dredging effect can be realized in combination with following foaming and viscosity reduction effects, and added phospholipid has an emulsification effect so as to damage blocking structures formed by oil, vegetable leaves and other impurities. After gas spills, microbubbles can be adsorbed around oil and matched with polyallylamine storing CO2 to have further viscosity reduction and dredgingeffects with permeation of blocking substances, and corrosion and high-temperature damage to the pipelines can be avoided.

The invention discloses a hot air nozzle for drying. The hot air nozzle for drying comprises a housing, wherein an air inlet is formed in the front end of the housing, and an air outlet is formed in the rear end of the housing; an inner chamber of the housing is divided into a front chamber and a rear chamber through a longitudinal air distributing plate; the front chamber communicates with the air inlet, and the rear chamber communicates with the air outlet; a ventilating hole through which the front chamber communicates with the rear chamber is formed in the air distributing plate. According to the hot air nozzle for drying, the air distributing plate is arranged in the inner chamber of the housing, and hot air entering the front chamber through the air inlet is stopped by the air distributing plate and then fills the whole front chamber, so that the uniformity of the hot air can be improved; then the hot air enters the rear chamber through the ventilating hole, the speed of the hot air is increased, and finally the hot air is sprayed out through the air outlet. Therefore, the uniformity and stability of the hot air can be effectively ensured, and the drying efficiency and the drying effect can be improved.

The invention discloses an intelligent composite slicer. The intelligent composite slicer comprises a rack, wherein the rack is provided with a fabric unreeling device and a release paper unreeling device, the rack is also provided with a compression roller device, a straddle cutting device, a traction device and a vertical straight cutting device; a guiding roller of the traction device is connected with a stepping motor arranged on the rack through a transmission mechanism, and the stepping motor is also connected with a compression roller of the compression roller device through a continuously variable transmission and a transmission mechanism. The intelligent composite slicer has the advantages that the stepping motor drives the continuously variable transmission to drive the compression roller, a motor drives a traction roller, so that the synchronization between the compression roller and the traction roller can be achieved to ensure that a composite material between the compression roller device and the traction device is flat and in a tensional state, thereby making the straddle cutting is easy and ensuring the straight cutting process and the stability of the length uniform of each section of the composite material.

The invention discloses a novel single-punch tablet press. The novel single-punch tablet press comprises an upper punch, a middle transverse disc, a lower punch, a middle mold hole, a feeding hopper and a driving motor, wherein a lead screw is arranged at the output end of the driving motor in a sleeving manner; a detachable magnetic separation material homogenizing device is connected to the middle section of the feeding hopper; the detachable magnetic separation material homogenizing device comprises a pipe body, a magnet, a motor, a connecting rod, a filter screen and a stirring blade; theupper and lower end surfaces of the pipe body are connected to the feeding hopper; the filter screen is arranged in the bottom of the pipe body; the magnet is arranged on the side wall of the pipe body; the pipe body and the filter screen form a filter tank; the motor penetrating through the center of the filter screen through the connecting rod is connected to the stirring blade; and the motor isfixed to the outer wall of the pipe body. The novel single-punch tablet press disclosed by the invention is reasonable in structural design and prominent in using effect. The detachable magnetic separation material homogenizing device connected to the middle section of the feeding hopper can further magnetically separate and homogenize powdery materials to ensure the uniform stability of the powdery material, so that the tabletting quality and the rate of finished products are improved, the actual production demand is met, and economical benefit and competitiveness of enterprises are created.

The invention belongs to the technical field of railway construction equipment. A portable assembly type rail car comprises a front axle, a rear axle, bearing longitudinal beams, side carriage bodiesand a bearing bottom plate, wherein the front axle and the rear axle are correspondingly arranged front and back; the bearing longitudinal beams are detachably assembled between the front axle and therear axle; the bearing longitudinal beams, the front axle and the rear axle are assembled into a walking chassis; the side carriage bodies are detachably assembled on side parts of the walking chassis; the bearing bottom plate is detachably assembled on the walking chassis. A portable assembly type spraying operation system comprises the portable assembly type rail car, spraying equipment and anelectric control system. The invention further discloses a portable assembly type spraying operation method. The portable assembly type rail car can be formed by assembling all parts; the parts can bedisassembled in a transportation process to reduce a loading and transporting size, and therefore field long-distance light transportation can be achieved; rapid on-line and rapid on-site assembly from a step ladder construction entrance in a field line can be achieved, and practicability of equipment is greatly improved.

The invention discloses a silver doped double-layer sulfonated polyphenyl ether proton membrane which is composed of the following raw materials in parts by weight: 15-30 parts of a reducing agent, 1.7-2 parts of a dammar resin, 50-60 parts of sulfonated polyphenyl ethe, 30-45 parts of tetraethoxysilane, 10-20 parts of a 1.3-2 mmol / l silver nitrate solution, 6-7 parts of acrylonitrile, 6-7 parts of 37% formaldehyde, 0.1-0.13 part of an initiator, 1-2 parts of polyvinylpyrrolidone, 14-15 parts of a solvent, 4-5 parts of phenol and 0.03-0.04 part of a catalyst. Due to silver doping, a finished product membrane has very good electric conductivity, in addition, silver prepared by using a method disclosed by the invention is good in dispersion uniformity, and a finished product of the double-layer membrane disclosed by the invention is high in elongation rate, high in stress and excellent in comprehensive property.

The invention relates to a grating device and air flotation equipment with the same. The grating device is mounted in the air flotation equipment and divides the air flotation equipment into a plurality of air flotation cavities; the grating device comprises an upper grate, a middle grate, a lower grate and a mounting frame; the upper grate is provided with a plurality of first gaps; a notch for mounting oil collecting tank is reserved in one end of the upper grate; a plurality of second gaps are formed in the middle grate; an obliquely upward inclined plane is arranged on the lower portion ofeach second gap; when liquid in a previous air flotation cavity passes through the second gaps, the liquid moves towards an oblique upward direction and enters a next air flotation cavity after colliding with the inclined planes; a plurality of third gaps are formed in the lower grate; and the upper grate, the middle grate and the lower grate are successively connected from top to bottom and aremounted in the mounting frame. the power of inlet of the air flotation equipment is reduced, the oil removal efficiency is greatly improved, floating oil on the surface of liquid is fully removed, andbottom precipitates can be easily washed and removed.

The invention relates to a geomechanical model test device adopting a self-balancing double-loading mode and a test method. The geomechanical model test device comprises a force bearing rack, a base plate, a bottom plate, a counter-force plate, a gravity balancing weight, bolts, an isolation plate, a hydraulic jack, a hydraulic workstation and a servo controller. The force bearing rack is formed by welding rectangular square steel, the rigidity requirement of the device is met, and meanwhile the isolation plate is convenient to install and place. The base plate is located above a test body andbelow the jack (balancing weight), and therefore it is guaranteed that loads are evenly transmitted to the test body in the test process. Connecting holes are reserved in the force bearing rack and the counter-force plate, and the force bearing rack and the counter-force plate are spliced through the bolts, so that the requirements of tests on different loading modes are met. The device is simplein structure and reusable, migration of an experimental device can be realized without position limitation, and the device can realize quick and accurate loading and can also realize a long-term stable loading and unloading mode.

The invention relates to the technical field of valves, and particularly discloses a one-way three-way valve which comprises a valve body. Three valve ports are formed in the valve body, a heater is arranged in the circumferential direction of the valve body, and the heater is located outside the valve body. An adjusting unit is arranged on one valve port, serving as a fluid outlet, of the valve body, an adjusting unit comprises a connecting base, a fluid channel communicated with the valve port is formed in the connecting base, and a through hole communicated with the fluid channel is formedin the connecting base. An elastic piece is arranged in the fluid channel, one end of the elastic piece abuts against the valve body, the other end of the elastic piece is connected with a plug capable of plugging the through hole, the other end of the plug abuts against an ejector block, and a communicating channel communicating with the through hole is formed in the ejector block. The one-way three-way valve in the scheme is used for solving the problems that in the prior art, a one-way three-way valve can only achieve the one-inlet two-outlet function and cannot be used as a one-way valve in actual production, and a heater in an existing one-way three-way valve is prone to being damaged.

The invention discloses ground light source calibration equipment of a low-light cloud picture imaging instrument and a calibration method of the equipment. The equipment comprises a supporting unit, a light source unit, a control unit and a heat dissipating unit. The supporting unit is used for supporting other units. The light source unit comprises a polygonal column and 34 light beads, and is used for providing upstream radiation with irradiance uniformly distributed. The control unit comprises a control circuit board, a travel switch, a motor and a sheltering plate, wherein the control circuit board drives the travel switch to trigger rotation and stoppage of the motor, the motor drives the sheltering plate to ascend or descend, and the sheltering plate is located above the light source unit when ascending. A water pump in the heat dissipating unit drives heat dissipating liquid to circularly flow among a cold-discharging heat dissipating device, a water tank and a water cooling pipe to dissipate heat for the whole equipment. Parameters such as the irradiance of a light source, the atmosphere profile and moonlight spectra are input into a radiation transfer mode to simulate the pupil entrance radiance of the atmosphere top low-light cloud picture imaging instrument, DN values measured by sensors are compared, and thus vicarious calibration of the low-light cloud picture imaging instrument with the ground light source is achieved.

The invention relates to an independently-driven double-tobacco-channel leveling device, comprising a front tobacco channel leveling device and a rear tobacco channel leveling device; the structural forms of the front tobacco channel leveling device and the rear tobacco channel leveling device are consistent with each other; different included angles are respectively formed between the front tobacco channel leveling device and a horizontal plane as well as between the rear tobacco channel leveling device and the horizontal plane; motor seats are installed on a bottom plate by means of screws; a main transmission shaft is horizontally installed in each motor seat by means of a bearing; motors are connected with tapered riving knife discs by means of transmission mechanisms; brush wire wheels are installed on brush wire wheel shafts, and are then installed in brush wire wheel seats by means of bearings; riving knife rests are connected with the brush wire wheel seats together with eccentric shafts by means of screws; the brush wire wheel seats are then fixed on the motor seats by means of screws. The independently-driven double-tobacco-channel leveling device has the advantages that an advancing trajectory of a tobacco shred bundle is theoretically linear, so that the uniformity and stability of the tobacco shred bundle are guaranteed; the front tobacco channel leveling device and the rear tobacco channel leveling device are respectively driven by the independent servo motors, so that the accuracy of cigarette dense-end position adjustment is improved; the independently-driven double-tobacco-channel leveling device has the advantages of accurate transmission, good stability and sealing property and low oil leakage risk.

The invention discloses a method for researching the influence of epoxy resin on SF6 trace products under a discharge condition and belongs to the technical field of electric power. According to the epoxy resin-based SF6 trace product detection method, an isotope-labeled epoxy resin material part is replaced into SF6 gas insulation equipment, after a discharge test is carried out, variety and content change of isotope-containing substances in the SF6 gas trace product are measured by using detection equipment, the research on the SF6 trace product influence of the epoxy resin under the discharge condition is realized. According to the method, a problem that the sources of C, H and O elements in the SF6 trace product are unknown at present is solved, and the influence rule of the epoxy resin material on the SF6 trace product can be directly verified by using an isotopic tracer method. The research method provided by the invention can provide key and reliable data support for research on fault diagnosis and electric life evaluation of the SF6 gas insulation equipment by using a component analysis technology.

The invention discloses a plastic sheet glue brushing device for blister package flocking. The device comprises a base; connecting rods are symmetrically welded on the two sides of the upper surface of the base; a conveying belt is welded at the tops of the connecting rods; a groove is formed in the center of the upper surface of the conveying belt; support frames are symmetrically welded on the two side edges of the upper surface of the base; driving cylinders are fixed at the tops of the support frames through bolts; carrying plates on the inner surface walls of the support frames are connected below the driving cylinders through extension rods; glue storage bins are fixed on the upper surfaces of the carrying plates through bolts; air pumps are arranged at the tops of the glue storage bins; the lower surfaces of the carrying plates are connected with sealing pipes; glue nozzles are arranged at the bottoms of the sealing pipes; and limiting support rods are symmetrically welded on the inner surface walls of the two sides of the support frames. The glue brushing device is simple and reasonable in overall structural design, protects the moving safety of the glue nozzle, meanwhile,prevents the glue dripping pollution phenomenon, and is higher in practicability.

The invention relates to a multi-material variable-diameter screw extrusion 3D printing device. An X-axis driving unit is arranged on a bottom plate, a Y-axis driving unit is arranged on the X-axis driving unit, a printing platform is connected above the Y-axis driving unit, and the X-axis driving unit and the Y-axis driving unit drive the printing platform to move horizontally; and a feeding unit and a Z-axis driving unit are installed on a vertical plate, and the Z-axis driving unit drives a printing unit to vertically ascend and descend. Slurry is added into a mixing cavity through a feeding pipe in the hedging direction, and the primary mixing effect is improved when the slurry just enters the mixing cavity; a screw adopts a variable-inner-diameter unequal-depth screw groove design, and when the slurry is mixed by the variable-diameter screw, the flowing direction of the slurry is continuously disturbed, so that the mixing effect of the slurry is further improved; gaps between screw grooves of a feeding section and a mixing section of the variable-diameter screw and the inner wall of a charging barrel are gradually reduced, the extrusion force is continuously increased, and gaps of an extrusion section are not changed, so that the extrusion uniformity and stability of a high-viscosity material are ensured.