513results about How to "Improve grinding effect" patented technology

The invention relates to the technical field of lithium iron phosphate grinding, in particular to a grinding device for lithium iron phosphate production and a grinding method.The device comprises a tank body, a driving assembly and a first grinding assembly, a tank cover is installed at the top of the tank body, the driving assembly comprises a driving motor installed at the top of the tank cover, and a rotating shaft is fixedly arranged on an output shaft of the driving motor; the rotating shaft vertically extends into the tank body, the first grinding assembly is installed on the rotating shaft and comprises a first grinding seat, the first grinding seat is rotationally connected to the rotating shaft in a sleeving mode, the peripheral wall of the first grinding seat is fixedly arranged on the inner wall of the tank body, a conical groove is formed in the top face of the first grinding seat, and the rotating shaft is fixedly sleeved with a conical block; and a scraper is fixedly arranged on the peripheral wall of the conical block through a connecting block. According to the invention, the control capability on the granularity of the lithium iron phosphate material is improved, the uniform distribution of the granularity of the material is ensured, the problem of excessive grinding or insufficient grinding is avoided, the risk of material caking caused by the grinding wheel in the grinding process is reduced, and the grinding efficiency is improved.

The invention discloses a lithium battery graphite negative electrode material grinding device and an operation method thereof, and relates to the technical field of lithium battery production, the lithium battery graphite negative electrode material grinding device comprises a multi-stage grinding mechanism and an inclined heating ring installed in the multi-stage grinding mechanism, and the top of the multi-stage grinding mechanism is provided with a dustproof crushing mechanism; the multi-stage grinding mechanism comprises a grinding box, supporting legs are fixedly installed on the periphery of the bottom of the grinding box, a supporting frame is fixedly installed on the inner side of the top of the grinding box, and a conical motor cover is fixedly installed in the center of the top of the supporting frame. A vertical rotating rod is driven to rotate by utilizing a rotating motor, and a grinding roller can rotate around the vertical rotating rod and can rotate around a rotating shaft and a horizontal rotating rod by utilizing the principle that a first bevel gear is in meshed connection with a bevel gear ring; therefore, the graphite on the grinding disc with the thick holes and the grinding disc with the thin holes can be fully ground.

In order to achieve the purpose, the multi-stage pulping machine adopts the following technical scheme that the multi-stage pulping machine comprises a rack, an upper cover, a grinding device and a power part are installed on the rack, and a hopper is arranged on the upper cover. According to the multi-stage pulping machine and the cleaning device thereof, soybean milk liquid obtained after third-stage grinding and bean dregs obtained after first-stage grinding are mixed through the second residue-liquid mixing chamber and then fed into the second-stage grinding device, feeding liquid in the third-stage grinding device is purified water, but the bean dregs are bean dregs obtained after three-stage grinding, so that the soybean milk liquid and the bean dregs are mixed uniformly, and the cleaning efficiency is improved. After the soybean milk with the lower concentration is mixed with the bean dregs, grease adhered to the bean dregs after the first-stage grinding is reduced, so that the situation that the second-stage grinding effect of the bean dregs is influenced due to excessive grease adhered to the bean dregs is avoided; meanwhile, the soybean milk subjected to third-stage grinding can be concentrated to obtain soybean milk with higher nutritional ingredients, and the grinding effect is improved.

The invention discloses a spice extraction device for spice processing, and belongs to the technical field of spice processing equipment. The spice extraction device for spice processing comprises a cylinder body and a power device and further comprises a planetary gear train, a gear ring is connected with the cylinder body, and a sun gear of the planetary gear train is connected with the power device; each transmission shaft is connected with one planet gear of the planetary gear train; the conical fixed grinding disc is arranged at the bottom of the cylinder body; each conical movable grinding disc is connected with one transmission shaft; the spoilers are arranged in the cylinder body, each spoiler is connected to one conical movable grinding disc, and the spoilers are used for stirring liquid in the cylinder body. According to the spice extraction device for spice processing, raw materials can be extruded and kneaded, and the raw materials and an extraction agent are fully stirred, so that the uniformity of the raw materials in the extraction agent is improved, the grinding effect of the raw materials is further improved, and the utilization rate of the raw materials is increased.

The utility model provides a paper tube edge grinding device, and belongs to the technical field of paper tube processing. A paper tube edge grinding device is characterized by comprising a machine frame, a conveying belt is arranged on one side of the machine frame, an arc-shaped containing block is arranged on the machine frame beside the conveying belt, the conveying belt and the arc-shaped containing block are the same in height, and sliding plates are symmetrically arranged on the machine frame on the two sides of the arc-shaped containing block in a sliding mode. A first push rod motor for driving the sliding plate to move is arranged on the rack, a first driving motor is fixedly connected to the sliding plate, a polishing wheel is fixedly connected to an output shaft of the first driving motor, and a polishing piece is fixedly connected to the polishing wheel. The paper tube edge grinding device has the advantages that the two ends of a paper tube are subjected to edge grinding through the grinding wheels, burrs protruding out of the junction of the end of the paper tube and the side wall of the paper tube are ground through the grinding pieces, and the grinding effect is good.

The invention belongs to the technical field of solid waste material preparation, and particularly relates to a device for preparing a multi-element solid waste-based cementing material, the device comprises a preparation box, a grinding and crushing assembly is mounted in the preparation box, and the grinding and crushing assembly comprises a rotary mounting disc arranged in the preparation box; the differential requirements of multiple applications on the granularity of the solid waste-based cementing material can be accurately met, accurate-granularity products adaptive to different scenes are produced by conveniently switching the grinding discs, and compared with the traditional technology that if the granularity needs to be changed, shutdown, equipment disassembly and whole set of grinding parts need to be frequently carried out, the working procedures are tedious, consumed time is long, equipment idling is caused, and production is interrupted, the production efficiency is greatly improved. According to the device, complex disassembly is not needed, the switching process is started instantly when the servo motor rotates reversely, under the cooperation of the wedge-shaped limiting piece, the wedge-shaped groove and other assemblies, grinding disc switching is rapidly completed, follow-up production is rapidly connected, the downtime is shortened, the overall production efficiency is remarkably improved, and the continuous industrial production rhythm and the unit time yield can be improved.

The utility model belongs to the technical field of grinding, and particularly relates to a gear grinding device which comprises a box body, a grinding wheel and a driving device. The grinding assembly is connected with the box body and is used for grinding the gear; the grinding assembly comprises a driving piece installed on the top of the box body through a motor frame. The transmission assembly is fixedly connected to the output end of the driving part; the end, away from the driving piece, of the transmission assembly is fixedly connected with a rotating shaft. A notch for the rotating shaft to move is formed in the top of the box body; the rotating shaft penetrates through a sliding block and is fixedly connected with a cam, and the sliding block is connected with the box body through a spring; one side of the cam abuts against a grinding machine, and the grinding machine is slidably connected with the sliding block. According to the gear polishing device, the auxiliary assembly is arranged, the convenience of gear polishing is further improved, in the embodiment, the polishing assembly and the auxiliary assembly are combined, the gear can be polished in all directions, the polishing effect is good, use is convenient, and the gear polishing device is more suitable for being used and popularized.

The invention discloses a metal powder production device for additive manufacturing, which belongs to the technical field of metal powder processing, and has the technical key points that the metal powder production device comprises a box body, falling raw materials can be crushed through an arranged crushing mechanism, and an arranged grinding driving mechanism not only realizes reciprocating grinding processing of metal powder, but also realizes grinding processing of the metal powder; meanwhile, the inner wall of the box body can be correspondingly cleaned and scraped, an efficient collaborative operation mechanism is formed by reciprocating swing of the grinding roller and intermittent vibration of the arc-shaped sieve plate, the production efficiency is greatly improved, uniform distribution of ground powder is correspondingly promoted through vibration of the arc-shaped sieve plate, the grinding effect is more ideal, and the product quality is improved. By means of the circulating cooling mechanism, extracted cooling liquid can be continuously circulated in the hollow rotating pipe on the grinding roller, friction and abrasion between the grinding roller and metal powder can be effectively reduced through circulation of the cooling liquid, the service life of the grinding roller is prolonged, and the grinding roller has the advantages of being high in grinding machining efficiency and convenient to cool and grind.

The invention discloses a calcium carbonate grading, grinding and screening integrated device and a control method thereof.The calcium carbonate grading, grinding and screening integrated device comprises an outer box body, a circulating grinding mechanism and a secondary grinding mechanism are sequentially installed in the outer box body from top to bottom, and the circulating grinding mechanism is in transmission connection with the secondary grinding mechanism through a transmission mechanism; the circulating grinding mechanism comprises a screening roller rotationally connected with the outer box body, a first-stage grinding assembly is installed in the screening roller, during work, the first-stage grinding assembly preliminarily grinds and crushes calcium carbonate, and the screening roller screens the ground and crushed calcium carbonate and cooperates with the screening roller to circularly grind and crush the calcium carbonate. By arranging the circulating grinding mechanism and the secondary grinding mechanism, multi-stage grinding and screening can be carried out on calcium carbonate, screening can be carried out in the grinding process, the grinding speed and effect are improved, the machining procedures are reduced, and rapid powder discharging is achieved.

The invention discloses an enhanced cement grinding aid and a preparation method thereof, and belongs to the technical field of cement admixtures. The concrete additive is prepared from the following raw materials in parts by weight: 20-30 parts of an alcohol amine compound, 10-20 parts of ethylene glycol, 1-3 parts of a surfactant, 0.3-0.5 part of a defoaming agent, 3-5 parts of a macromolecular synergist, 1-3 parts of a polycarboxylate superplasticizer, 0.5-1.5 parts of molasses and 20-30 parts of water. The alcohol amine compound comprises triethanolamine and modified alcohol amine; the macromolecular synergist is a sodium alginate-beta-cyclodextrin macromolecular compound. According to the cement grinding aid, the cement grinding efficiency can be remarkably improved, and the machine-hour yield is improved by 24.5% or above; the 3-day strength of the cement is improved by 5.9 MPa or above, and the 28-day strength of the cement is improved by 10.7 MPa or above, so that the cement has a good market application prospect.

The utility model discloses a PCB board grinding machine which comprises a board grinding machine body, adjusting grooves are formed in the front face and the back face of the board grinding machine body, adjusting rods are fixedly connected to the inner sides of the adjusting grooves, weight sensors are fixedly connected to the bottom ends of the adjusting rods, a lifting board is fixedly connected to the bottom ends of the weight sensors, and a board grinding motor is fixedly connected to the front face of the lifting board. The driving end of the plate grinding motor is fixedly connected with a plate grinding assembly, the front face of the plate grinding machine body is fixedly connected with a control panel, the two sides of the plate grinding machine body are fixedly connected with conveying frames, the front faces of the conveying frames are fixedly connected with a conveying mechanism, a telescopic rod is fixedly connected into the plate grinding machine body, and one end of the telescopic rod is fixedly connected with a mounting support. Through the arrangement of the adjusting rod, the weight sensor and the lifting plate, the board grinding effect is improved, the board grinding machine can automatically adjust the board grinding pressure according to the thickness of a PCB, and board grinding differences generated by the PCB are avoided.

The invention belongs to the technical field of graphene battery slurry production, and particularly relates to a graphene battery slurry grinding device which comprises a supporting base. The device is characterized in that the top of the supporting seat is fixedly connected with a grinding tank; the top of the grinding tank is fixedly connected with a feeding pipe and a driving motor; a discharging opening is formed in the bottom of the supporting seat; the output end of the driving motor is fixedly connected with a movable column; the bottom end of the movable column is fixedly connected with a grinding block; the surface of the movable column is fixedly connected with a first gear; one side of the first gear is in engaged connection with a second gear; the graphene battery slurry grinding device solves the problems that when an existing graphene battery slurry grinding device grinds graphene battery slurry, the graphene battery slurry is accumulated on a grinding block, the graphene battery slurry accumulated on the grinding block is not stirred in time, grinding of the graphene battery slurry is incomplete, and the particle size of the graphene battery slurry is affected.

The invention discloses a processing technology and equipment based on traditional Chinese medicine decoction pieces, and belongs to the technical field of traditional Chinese medicine processing. A grinding cylinder and a movable grinding sleeve are additionally arranged on a traditional grinding structure composed of a grinding roller and a fixed grinding sleeve to form a novel grinding device, and during working, coarse grinding objects treated by the grinding roller fall into an annular grinding cavity through coarse filtering holes, and then are ground into a grinding cavity; the rolling grinding column and the spraying column are used for carrying out secondary grinding on coarse grinding objects, meanwhile, a water supply structure is used for spraying out an aqueous solution from a spraying opening in the spraying column, and sprayed water flow impacts up and down, so that on one hand, a wet grinding environment is provided, the grinding effect is improved, and on the other hand, the grinding objects blocked in coarse filtering holes and fine filtering holes are dispersed; the discharging speed is increased, fine grinding materials directly fall into the ultrasonic treatment device on the lower portion along with water flow, the layer-by-layer small-volume ultrasonic wall breaking process is directly carried out while the grinding process is achieved, the fine grinding water solution on the lowest layer is gradually discharged within the preset time, and the ultrasonic wall breaking effect is improved.

The utility model relates to the technical field of sand mills, and discloses a sand mill grinding medium intercepting mechanism which comprises a storage tank, a fixing frame is fixedly connected between the upper portion of the left tank wall and the upper portion of the right tank wall of the storage tank, and a sand milling mechanism is movably connected between the lower end of the fixing frame and the middle of the lower tank wall of the storage tank in a penetrating mode. A separation mechanism is fixedly connected between the upper portion and the lower portion of the outer surface of the sanding mechanism in a penetrating mode, a control panel is fixedly connected to the middle of the front end of the storage tank, a discharging pipe is fixedly connected to the lower portion of the front tank wall of the storage tank in a penetrating mode, and supporting legs are fixedly connected to the four corners of the lower end of the storage tank. According to the grinding medium intercepting mechanism of the sand mill, the sanding mechanism is arranged, so that materials can be fully ground, the grinding effect is enhanced, the separating mechanism is arranged, the grinding medium can be intercepted and separated, the grinding efficiency is improved, and the grinding medium intercepting mechanism is suitable for being widely used.

The invention discloses an efficient mill for a mineral processing technology, which relates to the technical field of ball mills and comprises a barrel assembly, an end plate assembly, an adjusting assembly and a driving assembly. The barrel assembly is arranged, the first lining plate and the second lining plate are arranged in the barrel assembly, the first lining plate and the second lining plate can play a role in assisting material throwing so as to improve the material grinding effect, the protrusions are arranged on the outer side of the first lining plate, the inclined faces with different gradients are arranged on the two sides of the protrusions, and therefore the grinding effect of the materials is improved. When the barrel assembly rotates in different directions, the two inclined faces can bring materials to two different heights so as to adapt to different grinding standards of the materials, the protruding block of an inclined structure is arranged on the outer side of the second lining plate, the materials and the grinding balls can rotate to a certain degree under the guidance of the protruding block, and therefore the materials can be ground more stably. And therefore, the grinding effect of the material during falling and collision is improved, and the grinding effect of the device is improved.

The invention relates to the field of food processing, and particularly discloses an efficient food crushing and grinding refining device which comprises a grinding chamber, a crushing funnel is arranged on the grinding chamber, a crushing assembly is arranged in the crushing funnel, and a conveying assembly is arranged between the grinding chamber and the crushing funnel. And the conveying assembly conveys the crushed raw materials in the crushing funnel into the grinding chamber. The effect of high-pressure gas is ingeniously utilized, the crushing effect of the crushing assembly is achieved, the cyclic grinding effect on crushed raw materials can be achieved, the dependence between the grinding chamber and the crushing funnel is reduced, and therefore the fine grinding effect on food is achieved, food grinding is more fine and uniform, the grinding effect is improved, and the grinding efficiency is improved. Various market requirements are met, fine processing operation on food is facilitated, rotation of the transmission assembly can be controlled, and therefore the rotation speed of the smashing assembly, the rotation speed of the conveying assembly and the rotation speed of the screening assembly are effectively controlled.

The invention belongs to the technical field of grinding equipment, and discloses a high-energy jet mill with a pressurizing structure, the high-energy jet mill comprises a base and a fixing plate, the fixing plate is fixedly mounted at the top of the base, a grinding bin is fixedly mounted in the fixing plate, and a first ventilation pipe is fixedly mounted on the outer wall of the grinding bin; and a main airflow pipe is fixedly mounted on the inner wall of the grinding bin. When the two sets of pressurizing bins conduct airflow supply operation, the other two sets of pressurizing bins can compress air in the pressurizing bins through piston movement of piston rods, so that when a pressurizing airflow pipe is aligned with the pressurizing bins, the compressed air can improve the contact pressure between airflow grinding materials and the surface of a machined material, the speed of pressurized airflow is higher, and the working efficiency is improved. Compared with the prior art, the impact frequency on the surface of the machined material is larger, the machining time can be remarkably shortened, the production efficiency is improved, the production cost is reduced, and more importantly, the grinding effect of the material is better, and grinding is more thorough.

The invention discloses a complex profile part ultrasonic vibration grinding device suitable for a surface grinding machine and an operation process thereof, a workpiece is fixed at the output end of a stepped amplitude-change pole of an ultrasonic vibration device through a bolt, and a sliding bearing supporting seat is mounted in the middle of a shell of the ultrasonic vibration device and plays a role in supporting a sliding bearing; the tail portion of the ultrasonic vibration device is fixed to the indexing chuck through a chuck, the servo motor drives the indexing chuck to achieve accurate indexing, and the sliding bearing supporting seat and the indexing chuck are fixed to a surface grinding machine workbench through bolts. The ultrasonic generator is started, a high-frequency electric signal is transmitted to the piezoelectric ceramic transducer assembly through the cable, the high-frequency electric signal is converted into high-frequency longitudinal vibration, and the high-frequency longitudinal vibration is transmitted to the workpiece after being amplified by the stepped amplitude-change pole, so that the workpiece generates high-frequency ultrasonic vibration. Ultrasonic vibration auxiliary grinding of complex surface parts on a surface grinding machine is achieved, the removal rate of grinding materials is increased, the grinding force and the grinding temperature are reduced, and grinding burns are reduced.

The utility model discloses a positioning device for resin grinding of a printed circuit board. The positioning device comprises a positioning frame, the positioning frame is installed on a resin grinding feeding table, the positioning frame is provided with a positioning adjusting assembly in the discharging direction, the positioning adjusting assembly comprises a first positioning block and a second positioning block, and the first positioning block and the second positioning block are slidably connected to the positioning frame; and a positioning area is formed between the first positioning block and the second positioning block. According to the utility model, the corresponding positioning area can be adjusted according to the size of the circuit board, so that the circuit board is placed along the positioning area every time, the placed circuit board reaches a preset position every time, the problem of circuit board placement position deviation caused by manual board placement is solved, and the grinding effect of the circuit board is improved.

The utility model belongs to the technical field of valve bodies, and particularly relates to a disc valve seat and valve plate grinding device which comprises a machine frame, a workbench used for clamping a valve seat is installed at the bottom of the machine frame, a rotary driving mechanism is installed at the top of the machine frame, and the output end of the rotary driving mechanism is connected with a connecting rod. The bottom of the connecting rod is connected with a transverse adjusting rod capable of transversely moving, the end of the transverse adjusting rod is connected with a longitudinal adjusting rod capable of longitudinally moving, the bottom of the longitudinal adjusting rod is elastically connected with a middle rod, and the bottom of the middle rod is connected with a valve plate through a universal joint. The eccentric distance can be adjusted through the transverse adjusting rod and the longitudinal adjusting rod so as to meet grinding workpieces of different sizes, elastic pre-tightening force can be applied to the valve seat all the time through the compression spring, the valve plate can be attached to the valve seat all the time in the whole process, the valve plate can be self-aligned through the universal joint, and the grinding efficiency is improved. Therefore, a better grinding effect is achieved, and the leakage grade requirement is met.

The present invention discloses a control method for a food grinding device, which relates to the field of grinding equipment. The method includes: determining the food to be ground, and determining the structural characteristics of the compound grinding device; training the grinding decision module, and determining the control constraints, making dynamic control decisions for a single grinding cycle, and determining the pre-grinding strategy; setting the pre-grinding strategy with a PLC program; synchronously performing grinding monitoring, transmitting back for off-axis control analysis, and locating the pre-adjustment control point; combining the grinding decision module to make feedback control decisions, and determining the feedback control scheme; identifying the strategy response nodes of the feedback control scheme, generating adjustment response instructions, and performing grinding feedback. It solves the technical problems of low demand compliance and low degree of automation under complex grinding conditions, ensures the precise control of demand compliance under complex grinding conditions, and improves the degree of automation and the technical effects of dynamic control adaptability.

The manufacturing method of the grinding disc comprises the following steps: preparing a grinding disc material: uniformly mixing and stirring abrasive particles and a composite adhesive to obtain the grinding disc material; and drying the grinding disc material, pressing a die, heating and pressurizing, fixing and forming, and sintering at a preset temperature to obtain the grinding disc, wherein the abrasive particles comprise ceramic abrasive particles and diamond abrasive particles, and the ceramic abrasive particles and the diamond abrasive particles are mixed according to the weight ratio of 9.4: 0.6 to 9.6: 0.4. The grinding disc manufactured through the method is uniform in grinding material distribution, good in grinding effect and stable in performance, so that the product consistency is guaranteed, meanwhile, the manufacturing cost is low, and the manufacturing efficiency is high.

The utility model discloses grinding equipment for silicon carbide processing, which comprises a box body, a first motor is arranged on the surface of one side of the box body, the output end of the first motor penetrates through the surface of one side of the box body and is fixedly connected with a rotating rod, a grinding wheel is arranged on the rotating rod, and a screen is arranged in the box body and below the rotating rod. According to the silicon carbide material grinding device, silicon carbide materials are put into the box body, the first motor drives the rotating rod to rotate, the grinding wheel on the rotating rod rotates, then the silicon carbide materials can be preliminarily ground, the ground silicon carbide materials fall into the lower grinding disc, and the second motor on the top surface of the partition plate is turned on; the second motor drives the upper grinding disc to rotate, then the lower grinding disc is used in cooperation, the silicon carbide material can be ground again, the grinding effect on the silicon carbide material can be effectively improved through two times of grinding, and therefore follow-up machining can be conveniently conducted on the ground silicon carbide material.

The invention belongs to the technical field of ceramic production raw material processing, and particularly relates to an intelligent feeding mechanism of a ball mill for ceramic production processing, the intelligent feeding mechanism comprises a horizontally arranged cylinder, the two ends of the cylinder are connected with a feeding port and a discharging port respectively, and the feeding port and the discharging port are rotationally sleeved with supporting frames; and the bottoms of the two supporting frames are fixedly connected with the same base, a transmission device is installed on the front side of the top of the base, and a feeding assembly is rotationally inserted into the feeding opening. According to the device, the shearing rods are arranged, when materials fall on the shearing rods, the multiple shearing rods can be in the swing state of different amplitudes, and therefore when follow-up materials fall on the swinging shearing rods, the adjacent shearing rods can be matched with one another, and then the bonded materials are sheared and segmented; therefore, the caking phenomenon of the materials can be avoided, and the first grid plate or the second grid plate cannot be blocked by the caked materials.

The invention discloses a traditional Chinese medicine processing grinding device with a discharging multi-stage screening function, and relates to the technical field of traditional Chinese medicine processing.The traditional Chinese medicine processing grinding device comprises a crushing box, feeding hoppers are fixedly installed on the two sides of the top of the crushing box, a servo motor is fixedly connected to the top of the crushing box, and a transmission rod is connected to the shaft end of the servo motor; a grinding box is fixedly installed at the bottom of the crushing box, and a cutting and grinding mechanism used for rapid grinding is arranged in the crushing box and the grinding box. The cutting and grinding mechanism can be driven to operate through the servo motor, so that the cutting and grinding mechanism can conduct pretreatment crushing and grinding work on traditional Chinese medicinal materials conveniently, and operation of the cutting and grinding mechanism can further drive a first screen plate and a second screen plate to rotate to achieve centrifugal screening work; and the circulating feeding mechanism and the dispersing mechanism can be driven to operate to achieve circulating sufficient grinding and anti-blocking screening of the traditional Chinese medicinal materials, and the structural linkage and the grinding and crushing effect are improved.

The utility model discloses a grading grinding device for low-carbon cementing material processing, a screening mechanism comprises a supporting frame, the outer side wall of the supporting frame is provided with a limiting groove, the inner wall of the limiting groove is in sliding connection with a connecting block, the top of the connecting block is fixedly connected with a material pushing plate, and the top of the material pushing plate is fixedly connected with a screening mechanism. A sliding block is fixedly connected to one side of the top of the material pushing plate. A first filter plate is rotationally connected to one side of the inner wall of the supporting frame, a third filter plate is fixedly connected to the other side of the inner wall of the supporting frame, and a second filter plate is fixedly connected to the middle of the inner wall of the supporting frame; the tops of the outer walls of the first filter plate, the second filter plate and the third filter plate are slidably connected with the bottom of the material pushing plate, untreated low-carbon cementing materials can be graded through the screening mechanism before being ground, the first filter plate, the second filter plate and the third filter plate are installed in the supporting frame, and the low-carbon cementing materials can be rapidly classified according to the particle size after penetrating through the supporting frame. Therefore, the grinding effect is improved, and the machining efficiency is improved.

The invention relates to the technical field of welding, and discloses automatic welding equipment integrated with a positioner, which comprises a positioner body for clamping a pipe fitting, a side plate is fixed on the positioner body, a through groove is formed in the side plate, a lifting seat for moving up and down is arranged in the through groove in a sliding manner, and the lifting seat is connected with the positioner body. The lifting seat is connected with a circular ring used for horizontally moving, a rotating ring is rotatably arranged in the circular ring, a grinding assembly is arranged on the rotating ring, and the grinding assembly grinds the circumferential surface and the end surface of the pipe fitting at the same time through circular motion; according to the technical scheme, during welding, a second servo electric cylinder drives a conical pressing block to move, the conical pressing block presses and fixes a tube plate, the position of the tube plate is adjusted along with rotation of the positioner body, meanwhile, a third servo electric cylinder pushes a welding gun to move, the welding gun is moved to the position where welding is needed, and therefore the tube plate can be automatically welded conveniently; time and labor are saved.

The invention relates to the technical field of cement grinding aids, in particular to a composite liquid cement grinding aid and a preparation method of the composite liquid cement grinding aid. Maleic anhydride, triethanolamine, acrylic acid and isopentenyl polyoxyethylene ether are used as raw materials in a macromolecular grinding aid solution; a reaction product of maleic anhydride and triethanolamine can form a compound with special functional groups, the functional groups can be effectively adsorbed on the surfaces of cement particles, friction among the particles is reduced, the grinding efficiency is improved, and the dispersity and stability of the grinding aid can be further enhanced by adding acrylic acid and isopentenyl polyoxyethylene ether, so that the grinding aid has a good application prospect. The cement particles are more easily dispersed in water, the agglomeration phenomenon is reduced, and the refining of the cement particles is facilitated; according to the invention, sodium lignin sulfonate is modified by grafting diethanolamine, and on the basis of retaining the original dispersibility of sodium lignin sulfonate, a new functional group is introduced, so that the interaction between sodium lignin sulfonate and cement particles can be enhanced, and the grinding aiding effect is further improved.

The invention belongs to the field of semiconductor processing, and particularly relates to a thinning grinding wheel for a lithium niobate wafer and a preparation method of the thinning grinding wheel. The abrasive layer comprises the following components in parts by mass: 25-45 parts of a diamond abrasive, 20-50 parts of a resin binder, 5-10 parts of a foaming agent, 2-5 parts of zinc oxide and 2-5 parts of silicon carbide; the grinding material layer is of a porous net structure, and the porosity is 20-40%. Compared with the prior art, the grinding wheel solves the problem that in the prior art, the lithium niobate wafer is prone to fragment and edge breakage in the grinding machining process, the grinding wheel is improved, when the grinding wheel is used for grinding the lithium niobate wafer, the grinding effect is good, surface parameters are stable, the defective rate of thinning of the lithium niobate wafer is reduced, and the production efficiency is improved. And the blank of the lithium niobate wafer thinning grinding wheel in China can be filled.

The invention relates to the technical field of workpiece grinding equipment, in particular to a port grinding device for corrugated pipe compensator production. The technical problem that when an existing grinding device grinds a port of a corrugated pipe, grinding is not sufficient enough, efficiency is low, and then the grinding effect is poor is solved. A port grinding device for corrugated pipe compensator production comprises an outer frame, one side of the outer frame is rotationally connected with a rotating frame, and one side of the outer frame is fixedly connected with a spring shifting piece. The driving motor drives the two-way threaded shaft and the tooth-missing bevel gear to rotate together, the two-way motor drives the grinding wheel and the single gear to rotate together, the two-way threaded shaft rotates to enable the corrugated pipe and the single gear to move up and down together, and the single gear moves upwards to stir the driven gear to enable the grinding wheel to grind an end opening of the corrugated pipe. And the tooth-missing bevel gear rotates to turn over the corrugated pipe, so that the grinding wheel grinds a port on the other side of the corrugated pipe, the use by workers is more convenient, and the grinding efficiency is improved.