17results about How to "Avoid overgrinding" patented technology

The hyperfine wet grinding system comprises a grinding machine, two grinding tanks, a coarse material tank, an intermediate tank, a hydrocyclone, an overflow collecting tank, an underflow collecting tank and a pipeline ultrasonic device, the discharging ends of the two grinding tanks and the coarse material tank are converged through a first pipeline and then are connected with the feeding end of the grinding machine; the intermediate tank is connected with the discharging end of the grinding machine through a second pipeline; the pipeline ultrasonic device is connected to the second pipeline in series; the discharging end of the intermediate tank is connected with the hydrocyclone through a third pipeline, and the third pipeline is connected with a cyclone pump in series; an overflow port of the hydrocyclone is connected with the overflow collecting tank through a fourth pipeline, an underflow discharge port of the hydrocyclone is opposite to the underflow collecting tank, and a discharge port of the underflow collecting tank is connected with the coarse material tank through a fifth pipeline; the outlet end of the overflow collecting tank is connected with the two grinding tanks through a sixth pipeline; the system overcomes the problems of non-uniform grinding and excessive grinding in the prior art. The grinding method is simple in step, convenient to operate and capable of achieving continuous automation.

The invention discloses an anti-over-grinding crushing and grinding process for easy-to-argillization ore, which mainly comprises the following steps of: crushing raw ore and transferring the crushed raw ore into a surge bin; ore in the surge bin is transferred to a first double-layer vibrating screen for wet type pre-screening, oversize and intermediate products enter the semi-autogenous mill, and undersize products are pumped to the ore discharge end of the semi-autogenous mill. Ore discharged by the semi-autogenous mill and undersize products enter a second double-layer vibrating screen to be classified, oversize products are subjected to hard rock crushing and then return to an ore feeding belt of the semi-autogenous mill, intermediate products enter a lattice type ball mill, and ore grinding products and undersize products of the second double-layer vibrating screen are combined and pumped into a cyclone to be classified. And underflow of the cyclone is classified by a high-frequency sieve, oversize return to a ball mill for regrinding, and overflow and undersize products of the high-frequency sieve are combined into finished ore pulp to be fed into a sorting process. The process flow is simple, one-stage crushing and ore washing and screening before grinding are adopted, and forced discharging equipment such as a semi-autogenous mill is matched, so that over-grinding can be effectively prevented, and the ore grinding energy consumption is reduced.

The utility model discloses a polishing mechanism for blade support welding, and relates to the technical field of blade support polishing, the polishing mechanism comprises a workbench and a first slide rail, the first slide rail is arranged on the top of the workbench, a supporting strip is arranged in the first slide rail, and two ends of the top of the supporting strip are provided with turnover motors; a plurality of supporting blocks are further arranged at the tops of the supporting strips, rotating shafts are arranged at the output ends of the two overturning motors, the two rotating shafts are rotationally connected to the interiors of the supporting blocks, placing grooves are formed in one sides of the two rotating shafts, a conveying assembly is arranged at the top of the workbench, and a moving assembly is arranged on the conveying assembly. Through the moving assembly, the effect of driving the blade support to reciprocate on the grinding roller is achieved, it is ensured that the grinding roller can make full contact with all the surfaces of the blade support, abrasive particles can also evenly act on the whole surface of the blade support, the surface roughness is effectively reduced, and the smoother and smoother surface is obtained.

The invention discloses a robot automatic grinding method which comprises the following steps executed through computer equipment: S1, point cloud acquisition: moving a robot to a preset position, and shooting by using a three-dimensional point cloud camera to acquire point cloud; s2, obtaining a grinding and polishing path: selecting a region of interest on the obtained point cloud, setting a nearest neighbor search radius r, and obtaining multiple groups of path points based on self-selection points of the region of interest so as to obtain a machinable path; s3, estimating the poses of the path points based on the multiple groups of path points of the machinable path; and S4, robot polishing is carried out, specifically, the obtained path is guided into robot equipment, and corresponding polishing and repairing are completed. According to the method, the contact attitude of the belt sander and the path points can be accurately and stably estimated by combining various point cloud acquisition technologies and a preprocessing algorithm and by means of the geometrical characteristics of the aero-engine sealing part, so that the problems of over-grinding and over-cutting in the repairing process of the sealing part can be effectively solved.

This utility model relates to the field of waste residue grinding technology, specifically to an ultrafine grinding equipment for industrial waste residue. It addresses the technical problem that large particles of waste residue require longer grinding times in the equipment, while small particles may be over-ground, wasting energy. The equipment includes: a ball mill drum, a steel ball grid, a slag inlet pipe, a liner, a screen cylinder, a bearing frame, a spiral blade, a slag discharge port, a slag guide cylinder, a slag guide port, and a slag inlet mechanism. The waste residue moves towards the discharge end within the rotating ball mill drum. During this movement, it is ground by the steel balls and falls into the screen cylinder. The rotating screen cylinder, in conjunction with the spiral blade, screens out the waste residue that meets the requirements (small particles), while the waste residue that does not meet the requirements is returned to the slag inlet mechanism. This avoids over-grinding of small particles in the equipment and allows large particles of waste residue to better collide and contact with the grinding media, improving grinding quality and efficiency.

The utility model relates to the technical field of plastic product polishing, and particularly discloses a plastic product surface polishing device which comprises a supporting frame, an automatic polishing mechanism is arranged in the supporting frame, the automatic polishing mechanism comprises a U-shaped frame fixedly connected to the upper end of the supporting frame, a lead screw is rotationally connected into the U-shaped frame, and the lead screw is fixedly connected with the supporting frame. The outer wall of the lead screw is in threaded connection with a driving plate, the right end of the driving plate is connected with a pressure sensor, the right end of the pressure sensor is fixedly connected with a mounting seat, and the right end of the mounting seat is fixedly connected with a mounting plate. And a pressure sensor monitors the polishing pressure in real time and cooperates with a fourth motor to drive a lead screw to adjust the transverse position of the polishing roller, so that the polishing roller is always attached to the surface profile of a plastic product, continuous and uniform polishing is achieved, manual intervention is reduced, the production efficiency is improved, and the device is particularly suitable for polishing conical plastic pipes.

The invention discloses a low-carbon ore grinding process for improving the yield of a particle fraction of-325 + 400 meshes, and belongs to the technical field of ore grinding. The method comprises the steps that feeding mineral materials are screened; selecting an optimal ratio of the steel balls to the ceramic balls; optimizing the initial loading system and the filling rate of the porcelain balls; selecting the optimal ore grinding concentration; adding a proper amount of steel balls to reduce the under-abrasive fraction; and a steel ball and ceramic ball mixed grinding scheme is determined. According to the invention, the problems of over-grinding phenomenon, low yield of newly generated-0.045 + 0.038 mm and more under-grinding particle size of the existing tower mill taking a steel ball as a medium are solved. According to the method, the ore grinding medium steel balls are replaced by the nano composite ceramic balls, and the nano composite ceramic balls are matched with the steel balls with a certain volume ratio, so that the content of ore grinding products with the size of-0.045 mm is increased, the ore grinding efficiency, the concentrate grade and the recovery rate of the tower mill are improved, energy is saved, consumption is reduced, and meanwhile, the comprehensive benefits of a dressing plant are increased.

The utility model discloses a plate grinding device, which relates to the technical field of PPS (polyphenylene sulfite) processing, and comprises a grinding table, a scale groove, a belt grinder, a workpiece carrier plate, a height lifting piece and an adjustable elastic pressing piece. According to the device, a workpiece is placed on a workpiece carrying plate, then a driving lead screw is rotated to enable an inclined block to slide upwards along an inclined groove to a preset height, then the adjusting lead screw is rotated clockwise to enable a compression spring to be compressed, at the moment, a lifting hydraulic cylinder drives the whole belt type grinding machine to move downwards, a pressing head is made to press the surface of the workpiece, and the adjusting lead screw is rotated anticlockwise; the potential energy of the pressure spring is released to downwards extrude the pressure head, the initial compression amount of the pressure spring is adjusted according to the grinding thickness needed by machining, larger downward pressure is provided in the initial grinding stage, the grinding speed is higher, small pressure is provided in the later stage, excessive grinding is avoided, and therefore rapid grinding is achieved, milling is not needed, the cost is low, and the speed is high.

This utility model discloses a high-precision gear surface grinding device, belonging to the field of grinding processing technology. It includes a grinding head and a grinding tail. The grinding head has a connecting rod inside, with a second spring mounted on the connecting rod. A handle connecting rod is rotatably connected to the left side of the connecting rod, and a handle head is connected to the tail of the handle connecting rod. A grinding head is connected to the right side of the connecting rod. A protrusion is fixedly connected to the outer wall of the grinding head, and a first spring is installed inside the protrusion. A button is provided on the outer wall of the grinding head, connected to a groove, and a third spring is installed on the button. A clamping component is provided inside the grinding tail, with bolts mounted on the clamping component. An oil inlet is provided on the right side of the grinding tail, with a liquid flow channel inside. This utility model can grind the inner wall of gears, while simultaneously providing a liquid flow channel and an air inlet pipe for lubrication and cleaning of the internal structure.

The present invention relates to the technical field of ball mills, and discloses a continuous ball mill for high-fine grinding, comprising a chassis, wherein two ends of the chassis are respectively connected to be provided with a feed inlet and a discharge outlet, the chassis is rotatably connected to a power base, a protective lining is provided in the chassis, a screening partition is provided in the chassis, a group of the screening partitions divides the chassis into a coarse grinding area and a fine grinding area, a screening filter is provided on the screening partition, a follower block is rotatably provided on the side of the screening filter close to the feed inlet, a cleaning mechanism for cleaning the screening filter and a counterweight mechanism for keeping the cleaning mechanism rotating relative to the screening filter are provided on the follower block, the cleaning mechanism comprises a vibration mechanism that vibrates as the screening filter rotates, and the present invention enables the cleaning mechanism and the screening filter to rotate relative to each other, thereby avoiding accumulation of materials on the screening filter, preventing clogging of the screening filter, avoiding over-grinding of materials, and improving the quality of material grinding.

The invention discloses a polishing device for an exhaust pipe. The polishing device comprises a polishing table, positioning mechanisms, clamping mechanisms and a middle polishing mechanism, wherein the positioning mechanisms, the clamping mechanisms and the middle polishing mechanism are symmetrically arranged. The positioning mechanism limits the axial displacement of the small end of the tail throat pipe through a positioning shaft shoulder, and a V-shaped positioning plate is driven by a double-shaft air cylinder to jack the large end so that the large end can be in a preset inclined posture. And the hydraulic cylinder drives the positioning seats on the two sides to move oppositely through the connecting rod mechanism, so that the large-end inclined surfaces of the two tail throat pipes are tightly propped against and centered. In the moving process, a composite guide structure with a spiral groove matched with a linear groove can actively adjust the circumferential angle of the pipe body, and then the clamping mechanism tightly supports the inner wall in a self-centering mode. During grinding, the servo motors on the two sides synchronously drive the double pipes to rotate, the rodless air cylinder and the double-shaft air cylinder cooperatively control the grinding belt to be fed in the axial direction and attached to the outer contour in a profiling mode, and continuous, full-coverage and uniform grinding of the outer surfaces of the two suspended butt joint tail throat pipes is achieved. The method is particularly suitable for batch efficient accurate grinding of the exhaust tail throat pipes, and the surface quality and the production consistency are remarkably improved.

The invention discloses a system and a method for recycling valuable metals of a lithium ion battery through cooperation of wet grinding and vacuum pyrolysis. The recycling method comprises the following steps: completely discharging a waste lithium ion battery, disassembling and separating a positive plate and a negative plate, crushing and sieving, and collecting undersize powder; mixing with a grinding medium, and carrying out ball milling by adopting a ball milling tank; the slurry is sieved after being dried, and screen underflow is collected and is electrode black powder; putting the electrode black powder into a vacuum pyrolysis reactor, vacuumizing and then pyrolyzing; and after the pyrolysis is finished, cooling to room temperature under vacuum or inert gas protection to obtain a valuable metal solid product. The method is carried out at a relatively low temperature, metal oxidation can be inhibited, generation of harmful gas is reduced, separation and pyrolysis with higher adaptability to raw materials are realized, and directional recovery is realized.

The invention provides a preparation method of a back-illuminated image sensor and the back-illuminated image sensor, and particularly relates to the technical field of semiconductors. The preparation method of the backside illuminated image sensor comprises the following steps: providing a substrate, and forming a plurality of grooves in the substrate; forming nitride isolation layers on the inner walls of the plurality of grooves and the substrate on the two sides of the grooves; filling a semiconductor material in the groove in which the nitride isolation layer is formed to form a photoelectric sensing region; forming a metal interconnection structure on the substrate, wherein the metal interconnection structure covers the photoelectric induction region; thinning one side, deviating from the metal interconnection structure, of the substrate; and forming a grid structure on one side, deviating from the metal interconnection structure, of the substrate. The preparation method can effectively improve the problems of ion damage and optical crosstalk.

The invention relates to a self-grading fluidized bed stirring and grinding device and method, belongs to the technical field of ore grinding, and solves the problems of low ore grinding efficiency and serious excessive grinding in the prior art. The device comprises a water supply regulation and control unit, a slurry regulation and control unit and a grinding self-grading unit, the grinding self-grading unit comprises a grinding column body, an inner cavity of the grinding column body is divided into a settling chamber, a grinding chamber and a buffer chamber from top to bottom, the water supply regulation and control unit is communicated with the buffer chamber, and the slurry regulation and control unit is communicated with the grinding chamber. Fine minerals meeting the particle size requirement in the to-be-ground materials directly enter the upper settling chamber without being ground under the action of rising water flow drag force and the inclined plate and are discharged as qualified products, the treatment capacity of a grinding machine can be effectively reduced through pre-classification, selective ore grinding is achieved, the ore grinding energy consumption is reduced, and the ore grinding efficiency is improved.

The invention discloses a cutting device for cable protection pipe production. The cutting device comprises a machining table, a pipe fitting switching assembly, a cutting assembly, an upper polishing assembly and a lower polishing assembly. A cutting table is arranged on the machining table, and a cutting assembly is arranged on the cutting table; the pipe fitting switching assembly is rotatably arranged on the machining table and located on one side of the cutting assembly, and the pipe fitting switching assembly is used for fixing a plurality of to-be-cut pipe fittings and conducting overturning switching; the upper grinding assembly is arranged above one side of the pipe fitting switching assembly and used for grinding one end of the to-be-cut pipe fitting. The lower grinding assembly is arranged below the other side of the pipe fitting switching assembly and used for grinding the other end of the cut pipe fitting. The invention belongs to the technical field of cable protection pipe production, and particularly relates to a cable protection pipe production cutting device.

This invention belongs to the field of lithium-ion battery material preparation technology, and particularly relates to a multi-stage grinding device for lithium iron phosphate precursors. Addressing the problems of low grinding efficiency and inability to effectively grind lithium iron phosphate precursors of varying viscosities in existing devices, the following solution is proposed: a grinding jar, and coarse grinding components and fine grinding components arranged vertically. Both the coarse and fine grinding components are connected to the shaft of a grinding rotor. The rotation of the grinding rotor drives the coarse and fine grinding components to operate synchronously. This allows for the coarse grinding of the lithium iron phosphate precursor fed into the jar, followed by fine grinding, forming a multi-stage grinding process to ensure better grinding results. Furthermore, through a combination of vertical layering design and composite grinding, the lithium iron phosphate precursor is progressively refined within a single grinding jar, significantly improving the grinding efficiency and product consistency of the lithium iron phosphate precursor.

The invention provides a lacquer ware lacquer coating control method and system based on machine vision, and relates to the field of lacquer coating control. Based on the manufacturing information of the matrix of the lacquer ware and the total number of lacquer lacquers, a plurality of key lacquer lacquers and an optimal grinding scheme are determined, and the optimal grinding scheme comprises the number of grinding meshes corresponding to each key lacquer lacquers; determining an optimal illumination parameter based on the manufacturing information of the carcass and a plurality of key lacquer coating times; and for each key lacquer coating number, based on the optimal illumination parameters, acquiring a carcass lacquer layer image corresponding to the key lacquer coating number, based on the carcass lacquer layer image corresponding to the key lacquer coating number, identifying polishing defect information corresponding to the key lacquer coating number, and based on the polishing defect information corresponding to the key lacquer coating number, identifying the lacquer coating number corresponding to the key lacquer coating number. And a grinding control strategy of the next lacquer coating pass number is generated, and the lacquer coating quality is improved.