61results about How to "Speed up sieving" patented technology

The invention discloses a sand blasting machine for tubing coupling machining, and relates to the technical field of sand blasting equipment. A raw material box is fixedly connected to the top end of the shell, an upper sand blasting pipe is connected to the top side of the raw material box in a penetrating mode, a butt joint hose is connected to the side of the raw material box in a penetrating mode, meanwhile, a side sand blasting pipe is connected to the outer end of the butt joint hose in a penetrating mode, the side sand blasting pipe is slidably connected to the side of the shell, and a fixing frame is fixedly connected to the bottom side of the interior of the shell. According to the sand blasting machine for tubing coupling machining, when a side sand blasting pipe moves, a butt joint disc and an abutting disc can be synchronously driven to move, the outer end of a tubing coupling extrudes an abutting air bag arranged on the inner side of the abutting disc, air in the abutting air bag enters an expansion air bag through a communicating pipe, and the expansion air bag is expanded; the internal threads of the tubing coupling can be protected and blocked through the expansion air bag, and the possibility that the internal threads of the tubing coupling are abraded due to the sand blasting effect and the follow-up butt joint stability is affected is reduced.

The waste metal screening and magnetic separation system comprises a bottom plate and a supporting frame fixedly arranged on the top face of the bottom plate through supporting legs, a transmission roller and a permanent magnet roller are rotationally arranged on the two sides of the surface of the supporting frame correspondingly, and a first conveying belt is in transmission connection between the surface of the transmission roller and the surface of the permanent magnet roller. A collecting frame is fixedly arranged on one side of the top face of the bottom plate, L-shaped flow guide plates are fixedly arranged on the two sides of the interior of the collecting frame, and a second conveying belt is in transmission connection between the interiors of the two L-shaped flow guide plates. According to the waste metal screening and magnetic separation system and the screening and magnetic separation method thereof, magnetic metal fragments collected after magnetic separation can be rapidly screened according to the particle size, and in the screening process, the screening net plate is locally vibrated by the local vibration mechanism according to the blocking degree in the meshes, so that rapid discharging of the fragments is facilitated, and the screening speed is increased.

The invention relates to the technical field of coal gangue, and provides a coal gangue rapid screening device which comprises a supporting frame, and a protective shell is fixedly connected to the top of the supporting frame; a crushing device is arranged at the top of the supporting frame and comprises a motor, the motor is fixedly connected to the side face of the protective shell, an output shaft of the motor is fixedly connected with a rotating rod, the circumferential face of the rotating rod is fixedly connected with a chain wheel, and a chain is arranged on the side face of the chain wheel; and crushing rollers are fixedly connected to the circumferential surface of the rotating rod. By means of the technical scheme, the problems that in the prior art, when coal gangue is crushed, the effect that the pressing plate reciprocates to extrude the coal gangue on the top of the crushing roller is difficult to achieve, the situation that the crushing effect is affected due to the fact that the coal gangue is too large to be clamped is difficult to prevent, the situation that crushing equipment is clamped is difficult to avoid, and the production efficiency is reduced are solved.

The utility model relates to the technical field of rubber crushing, and discloses a crushing device for rubber production and processing, which comprises a crushing box, a feed hopper is fixedly mounted at the top of the crushing box, crushing rollers are symmetrically and rotatably mounted in the upper end of the crushing box, one end of each crushing roller extends to the outside of the crushing box, and the other end of each crushing roller extends to the top of the crushing box. And a transmission assembly is arranged between one ends of the two crushing rollers and the surface of the crushing box. According to the technical scheme, due to the arrangement of the screening plate, the auger rod, the shaking assembly and the like, in the process that the output end of the driving motor drives the auger rod to rotate, rubber particles smashed on the surface of the screening plate can be shaken through the arrangement of the shaking assembly, and filtering holes in the surface of the screening plate are prevented from being blocked; and meanwhile, the screening speed can be increased, and large-particle rubber blocks can be rapidly conveyed into the material guide box, so that the processing efficiency is improved.

The invention relates to the field of powder blending, and discloses a powder blending device for producing instant pepper soup, which comprises a fixed rack, a processing cylinder, a feeding frame, a rotating shaft, a pushing deflector rod, a screening plate and the like, a processing cylinder is fixedly connected in the fixed rack, raw materials are crushed and mixed in the processing cylinder, a feeding frame is installed on the processing cylinder, a crushing frame is fixedly connected to the side face of the feeding frame, a screening plate is fixedly connected to the bottom in the feeding frame, the raw materials fed into the feeding frame are screened through the screening plate, and a rotating shaft is rotationally connected to the screening plate. According to the device, to-be-crushed raw materials are classified according to the size, large raw materials are firstly crushed for the first time and then are mixed and crushed with small raw materials, the crushing effect can be ensured, the product taste can be guaranteed, powder can be quantitatively sent out after uniform mixing, and the powder can be rapidly and quantitatively subpackaged.

The utility model relates to screening device technical field especially relates to a kind of screening discharge device of counter-roller crusher, comprising: crushing screening tank;Feed hopper, fixedly connected in the top of crushing screening tank;Crushing assembly, including two crushing rollers symmetrically rotatably installed in crushing screening tank, and two crushing rollers are placed below feed hopper, the surface of crushing screening tank rotatably installs two gears, and two gears are engaged and respectively with two crushing rollers coaxial fixedly.The utility model can speed up the screening speed of material by reciprocating swing screening plate, at the same time, the rotation of two helical blades is controlled using double-shaft motor, the material not completely crushed on screening plate can be re-fed into feed hopper, and it is crushed again by two crushing rollers, so that the circulation crushing of material is realized, to avoid the accumulation of too much material not completely crushed on screening plate, and then improve the discharge speed of material.

This invention discloses a screening and regrinding mechanism for pulp and slurry, comprising a housing, an axially arranged rotating shaft inside the housing, a grinding roller fixed on the rotating shaft, and a rotating screen cylinder arranged outside the grinding roller. The screen cylinder rotates in the opposite direction or at a differential speed to the grinding roller. A spiral conveying blade is provided on the outer wall of the screen cylinder, and a spiral conveying groove is provided on the grinding roller. The conveying directions of the spiral conveying groove and the spiral conveying blade are opposite. This invention, through the cooperation of the rotating grinding roller and the rotating screen cylinder, performs regrinding simultaneously with slurry conveying, thereby improving the efficiency of screening and regrinding.

The utility model relates to the technical field of dry-mixed mortar, in particular to a screening device for dry-mixed mortar, which comprises a box body, a blanking hopper, a support, a storage hopper, a screen drum, a discharge pipe, a feed hopper, a mounting pipe and a partition plate, the box body is connected with the support, the partition plate is connected with the inner wall of the box body, the box body is divided into a screening bin and a feeding bin, the screen drum is rotationally connected with the box body and the partition plate and located in the screening bin, and the partition plate is provided with a driving assembly a which is in transmission connection with the screen drum. The mounting pipe is connected with the box body, the storage hopper is connected with the upper end of the mounting pipe and is coaxially distributed with the mounting pipe, and the discharging pipe is connected with the lower end of the mounting pipe and is obliquely arranged; the discharging hopper is connected with the lower end of the box body and located below the screening bin, and the inner diameter value of the discharging hopper is gradually reduced downwards in the height direction of the box body. The screening drum rotates to accelerate screening of mortar, and the mortar continuously rolls in the screening drum to be screened more thoroughly.

The utility model discloses a soil moisture content sampling and analyzing device which is characterized in that the upper end surface of a sampling box is fixedly connected with a first servo motor, the output end of the first servo motor penetrates through the side wall of the sampling box and is fixedly connected with an electric telescopic push rod, and the telescopic end of the electric telescopic push rod is fixedly connected with a spiral blade; a second servo motor is fixedly connected to the left side face of the sampling box, a fixing rod is mounted at the output end of the second servo motor, and a sliding groove is formed in the inner side wall of the sampling box. When a second servo motor works, rotation of a fixing rod and a cam is synchronously controlled, when the side, with the larger diameter, of the cam faces downwards, striking of a screening plate is achieved, meanwhile, under matched use of a spring, back-and-forth shaking of the screening plate is achieved, the screening process is accelerated, meanwhile, a slope is arranged in a sampling box, and the sampling box is convenient to use. The soil moisture content detector body can conveniently detect the moisture content in the soil, and the situation that too many impurities are doped in the soil, and the final detection effect is affected is avoided.

The invention discloses multi-stage screening equipment for fertilizer production, and relates to the technical field of bio-fertilizer screening, the multi-stage screening equipment comprises a box body, a screening device is arranged on the inner side of the box body, and the screening device comprises a power part. By arranging a motor, a second stirring plate, a first material guide plate, a spiral feeding plate, a second material guide plate, a filter shell and a filter screen, fertilizer is poured into the box body, the filter screen and the filter shell are used for screening the fertilizer twice, the motor is started, the motor drives the second stirring plate to rotate, the second stirring plate stirs the fertilizer above the filter screen, and the fertilizer is uniformly stirred. A spiral feeding plate is driven by an output shaft of a motor to rotate, so that the fertilizer falling into the inner side of the filter shell is conveyed upwards along the inner wall of the filter shell, the small-particle fertilizer penetrates through the filter shell and falls downwards in the upward moving process of the fertilizer, and the fertilizer penetrating through the filter screen is prevented from directly falling onto the spiral feeding plate by utilizing a first guide plate; the small-particle fertilizer is prevented from falling to the inner side of the third discharging pipe.

The utility model discloses a sorting device for wheat processing, including sorting box, feed hopper, upper guide plate, lower guide plate, sorting fan, dust collection mechanism and screening mechanism, through setting up upper guide plate and lower guide plate, can guide the wheat that feed hopper falls down and disperses and slides, make the wheat distribution more evenly in the sorting process, make subsequent sorting fan and dust collection mechanism better play the role, improve the overall nature and accuracy of sorting and impurity removal, two groups of symmetrical sorting fan and dust collection mechanism intercoordination, the airflow of sorting fan blows the wheat that disperses and slides and makes the impurity and wheat separate, and dust collection mechanism then in time will separate out the impurity and inhale, the design of dust collection cover, dust collection shell and protective grating has effectively expanded the dust collection range, and the protective grating can prevent the wheat from being inhaled, ensures the smooth progress of the dust collection process, and greatly improves the efficiency of sorting and impurity removal.

The utility model discloses a screening and filtering equipment for zanthoxylum bungeanum, including the bottom plate, the bottom plate is connected with multiple groups spring telescopic link, multiple groups spring telescopic link is connected with the same box, be equipped with multiple groups filter screen in the box. The utility model discloses utilize air pump to transport airflow to bellows place constantly, and airflow can discharge at the air outlet of corresponding pipe group, and then can pass filter screen from down to up, can continuously impact screen, prevent broken pepper, pepper stem chaff and the wet zanthoxylum bungeanum with the adhesion of oily surface and have the adhesion and attach on fixed sieve hole, keep sieve hole unobstructed, and sieve hole does not jam, and zanthoxylum bungeanum can pass screen and carry out screening smoothly, avoid the screening stagnation of the jam, make the screening process continuous and efficient, improve the whole screening efficiency.

The utility model discloses a macadamia nut green peel huller, which belongs to the technical field of nut processing equipment and comprises a rack, a hulling bin and a vibrating screening structure, the hulling bin is arranged on the rack, a scraper is arranged in the hulling bin and used for hulling green peel of macadamia nuts, a feed port is arranged at the upper end of the hulling bin, a discharge port is arranged at the lower end of the hulling bin, and the vibrating screening structure is arranged on the rack. The vibrating screening structure comprises a screening part and a pulling part, the starting end of the screening part is located below the discharging port, the screening part is arranged in a downward inclined mode from the discharging port and provided with a plurality of notches and used for screening green husks, a rotating part is arranged on the hulling bin, one end of the pulling part is connected with the screening part, and the other end of the pulling part is connected with the rotating part. The other end is connected with the rotating piece; through cooperation of the rotating piece and the pulling piece, the screening piece does reciprocating motion to generate vibration, and screening of the green husks and the kernels is accelerated.

The invention relates to the technical field of feed processing, in particular to livestock breeding feed screening and mixing integrated equipment which comprises a horizontal cabin and a vertical cabin which are integrally formed, the vertical cabin is arranged in the middle of the bottom of the horizontal cabin, and an impurity removal assembly is arranged on the inner side of the vertical cabin. According to the feed screening and mixing integrated equipment for livestock breeding, the horizontal cabin is arranged to be matched with the vertical cabin, main materials can be directly put into the vertical cabin during use, the main materials can fall on the upper net plate, and the main materials which cannot pass through the upper net plate can slide down along the left side of the upper net plate; main materials which penetrate through the upper screen plate and are moderate in size can slide into the second side hopper from the right side along the lower screen plate to fall off, residual fine materials can penetrate through the lower screen plate to fall off from the front hopper, when the movable shaft rotates, a cam protrusion connected with the movable shaft can push the lower screen plate and the upper screen plate to incline by an angle along the transverse rod, and the movable shaft falls off due to the gravity; and vibrating the main material thereon.

The invention discloses a dry-type transformer castable powder screening machine, and relates to the technical field of powder screening, the dry-type transformer castable powder screening machine comprises a base, the base is used for fixedly supporting a screening component, a supporting frame is fixedly mounted at the edge of the top of the base, and a rotating shaft feeding guide piece is rotatably mounted at the top of the supporting frame. According to the powder screening machine for the dry-type transformer castable, due to the fact that raw materials contain a large amount of dust, part of the powdery raw materials are prone to caking, the feeding port is prone to being blocked by the large amount of the raw materials during pouring, and the raw materials are stacked in the material guiding folding pipe, vibration receiving frames are arranged on the two sides of the material guiding folding pipe; the raw materials slide downwards at the moment of dumping, so that the vibration receiving frame is impacted by the raw materials to generate displacement, the inclination angle of the vibration receiving frame is changed, the raw materials are conveniently discharged from the guide folding pipe, the surface of the vibration receiving frame is arranged to be zigzag, the zigzag structure primarily disperses the raw materials when the raw materials impact downwards and make contact with the surface of the vibration receiving frame, and the caking phenomenon in the raw materials is reduced.

The utility model application relates to the technical field of slag drum screening device, concretely relates to a kind of slag drum screening device for household garbage incineration power generation, including seat, setting at top rotatable screening part, cleaning part for being fixed to the seat top and being used to clean the surface of screening part and base for being set at the bottom of seat and being used to support, the screening part includes the screening drum of rotation installation in the top of seat, and the first gear for transmission is fixed in one end of screening drum;Screening drum has the sleeve seat outside rotation, and screening drum and sleeve seat are all arranged in annular array and are provided with screen hole;The same end of screening drum and sleeve seat is all provided with inlet and outlet, and the cover plate is fixed in inlet and outlet of sleeve seat place.This application realizes the adjustment of screen hole size.Solve the problem that slag drum screening device screen hole cannot be adjusted.

The utility model provides a stirring device for plastic raw material production and processing, and relates to the technical field of plastic processing. Comprising a box body, a top plate is arranged on the upper portion of the inner side of the box body, one side of the top plate is fixedly connected with a first side plate, and the other side of the top plate is fixedly connected with a second side plate; two T-shaped sliding rails are symmetrically and fixedly connected to the upper portion of the inner side of the box body, and two T-shaped sliding grooves which are in one-to-one correspondence with the T-shaped sliding rails and are in sliding connection with the T-shaped sliding rails are symmetrically formed in the top of the top plate; two electric cylinders are symmetrically and fixedly connected to the top of the box body, fixing blocks are fixedly connected to the telescopic ends of the two electric cylinders, and the fixing blocks are fixedly connected to the outer wall of the first side plate; after stirring is completed, an electric cylinder is started, the telescopic end of the electric cylinder extends to push a fixing block to move, a first side plate, a top plate and a second side plate are driven to move synchronously, stirring blades and a transverse rotating shaft are moved out of the box body, and the situation that a stirring part in a traditional stirring device is fixed and difficult to clean is changed.

The utility model discloses industrial silicon powder impurity removal equipment, which belongs to the technical field of industrial silicon powder, and comprises an impurity removal box, the top of the impurity removal box is fixedly connected with a top cover, the top side in the top cover is provided with a feed port, a screen is arranged right below the feed port, and the top of the screen is provided with a uniform distribution assembly and an auxiliary blanking assembly. According to the uniform distribution device, the driving motor drives the rotating shaft, the first gear, the annular gear, the uniform distribution frame and the first fluted disc to rotate, the centrifugal force of the uniform distribution frame in the rotating process can move industrial silicon powder accumulated in the center of the uniform distribution frame to the periphery, and the industrial silicon powder uniformly falls on the top of the screen below under the action of the uniform distribution holes of the uniform distribution frame; and meanwhile, a first fluted disc can drive a second gear to rotate, so that the second fluted disc drives a connecting shaft and a uniform distribution plate to reversely rotate by taking a uniform distribution frame as a center, and the uniform distribution plate can further disperse industrial silicon powder in the uniform distribution frame.

This utility model relates to a hopper screening structure and a screening hopper, belonging to the field of material screening technology. The technical solution includes a hopper, a rotating shaft, and a screening plate. The hopper is provided with a material bin, a conical bin, and a discharge pipe from top to bottom. The rotating shaft is provided with a radial brush rod with bristles in the middle and an axial extension with a scraper at the bottom. The screening plate is an annular structure with screen holes, its outer edge is fixed to the inner wall of the hopper, and its inner edge is supported by the rotating shaft. The bristles contact the upper surface of the screening plate, and the scraper is adapted to the inner wall of the conical bin and supports the rotating shaft. The rotating shaft is driven to rotate by a drive mechanism to realize dynamic screening of materials and smooth discharge. It is mainly used to improve screening efficiency and reduce manual intervention.

The utility model relates to the technical field of screening devices, and discloses a raw material screening device for bulletproof ceramic chip production, which comprises a workbench and supporting legs, the upper surface of the workbench is provided with a guide groove, the upper surface of the workbench is symmetrically provided with two sliding grooves, the inner walls of the two sliding grooves are both provided with sliding rails in a sliding manner, and the sliding rails are arranged on the upper surface of the workbench. A screen is fixedly installed between the two sliding rails, and the screen is obliquely arranged. The output end of the driving motor drives the crankshaft to rotate, the crankshaft drives the first belt wheel to rotate, the first belt wheel drives the second belt wheel to rotate through the belt, the second belt wheel drives the feeding roller to rotate, the feeding roller drives the feeding groove to rotate, and raw materials to be screened are quantitatively put into the upper surface of the screen through the feeding groove. The powder raw materials are prevented from being accumulated too thick on the screen, and the screening speed of the device is increased.

The utility model relates to the technical field of printers, and discloses a 3D metal printer with a powder return mechanism, which comprises a processing box, the rear end of the processing box is fixedly connected with a motor I, the driving end of the motor I is fixedly connected with a transmission rod I, the outside of the transmission rod I is fixedly connected with a plurality of striking plates, and the striking plates are fixedly connected with a powder return mechanism. A fixing frame is fixedly connected to the inner wall of the processing box, sliding columns are slidably connected to the inner walls of the four corners of the fixing frame, the sliding columns are sleeved with first springs, limiting blocks are fixedly connected to the tops of the sliding columns, attaching blocks are fixedly connected to the bottoms of the sliding columns, and a sieve plate is slidably connected to the inner wall of the fixing frame. According to the powder feeding device, added powder is efficiently screened, so that the efficiency is improved, the screening plate can be replaced, the powder feeding device can adapt to different powder sizes and requirements, automatic feeding of the powder is achieved, and the powder is beaten through the smashing rod.

The utility model relates to the technical field of glass bead production, in particular to a fine classifying screen for glass bead production, which comprises a screening shell, an inner cavity of the screening shell is connected with a screen plate through bolts, and the front side of the screening shell is communicated with a material guide frame. Glass beads needing to be screened are added to the top of the screen plate through the feeding pipe, cleaning water in the water tank is pumped out through the water pump, the water pumped out through the water pump is injected into the water spraying cover through the pipeline, the water is sprayed to the surfaces of the glass beads through the water spraying cover, and then the cleaning roller is driven by the transmission shaft of the motor to rotate. Glass beads are brushed through a cleaning roller, the glass beads are driven to move in the rotating process of the cleaning roller, the interior of the drying box is heated through a heater, air is injected into the drying box through a draught fan, and hot air is extruded into a drying shell through the air injected through the draught fan; and hot air is sprayed to the surfaces of the cleaned and screened glass beads through the drying shell.

The utility model discloses a powder production system which comprises a powder grinding mechanism, a temporary storage bin, a screening mechanism and a finished product bin, and the temporary storage bin is connected with the powder grinding mechanism through a first conveying mechanism; the screening mechanism is connected with the temporary storage bin; the finished product bin is connected with the screening mechanism through a second conveying mechanism, the grinding mechanism is used for grinding ore into powder, the powder is conveyed into the screening mechanism through the first conveying mechanism to be screened after being ground into powder, and the powder with the particle size larger than the standard is screened out. And qualified powder is conveyed into the finished product bin through the second conveying mechanism to be stored, the quality of the powder in the finished product bin is high, and the particle size is uniform.

This invention relates to a crushing and screening system for lithium hexafluorophosphate crystals, belonging to the technical field of crushing and screening equipment for lithium hexafluorophosphate crystals. The invention includes a casing, a first-stage crushing mechanism, a second-stage crushing mechanism, a third-stage crushing mechanism, a first screen plate, a second screen plate, and a first guiding assembly. The casing has a feed inlet at the top and a discharge outlet at the bottom. The first, second, and third-stage crushing mechanisms are arranged sequentially from top to bottom within the casing, with the outlet of the previous crushing mechanism staggered from the inlet of the next crushing mechanism. The first screen plate guides the crystals from the outlet of the first-stage crushing mechanism into the second-stage crushing mechanism, and the second screen plate guides the crystals from the outlet of the second-stage crushing mechanism into the third-stage crushing mechanism. The first and second screen plates screen out crystals of acceptable particle size. The first guiding assembly has interconnected transverse and vertical material guiding channels, with the transverse material guiding channel extending below the first screen plate.

The utility model discloses an automatic screening machine for tea production and processing, which comprises a case, a bottom groove is arranged at the bottom end of the case, two ends of two sides of the bottom of the case are respectively and fixedly connected with a group of support columns, the inside of the case is movably connected with a screening box, and one side of the case is fixedly connected with a fixing plate. According to the automatic screening machine for tea production and processing, the screening box is arranged, during screening, tea is guided into the screening box, then a driving motor is started to drive a rotary disc to rotate, the rotary disc drives a transmission sleeve plate to reciprocate through a driving shaft, and the transmission sleeve plate drives the screening box in the machine box to continuously move through a driving plate; the screening box continuously moves to drive tea leaves in the screening box to continuously shake, so that the screening speed is increased, the driving plate can be limited through the limiting sleeve on one side of the machine box, the stability of the screening box is improved, and the problem that the screening efficiency is low is solved.

The utility model relates to the technical field of stone mining, and discloses a quarry mud powder sieve which comprises an equipment shell, fixing blocks are fixedly installed on the two sides of the inner wall of the equipment shell respectively, the side faces of the fixing blocks are fixedly connected with an extending sleeve shell, and a first connecting shaft is fixedly connected into the extending sleeve shell in a clamped mode. According to the mud powder sieve for the quarry, a plugging plate is jacked through a second air cylinder, a second spring at the top of the plugging plate is stretched in the jacking process, and the plugging plate drives a damping rod to contract in the stretching process, so that the plugging plate and a conveying pipe are in a non-attached state; and then stones on the top of a connecting transverse plate, entering the connecting sleeve shell, of the feeding shell fall down, a second air cylinder contracts to control a blocking plate to retract to block a conveying pipe, and the effect of timed discharging can be effectively achieved in the whole operation process. Therefore, the problem that blockage cannot be screened due to the fact that the discharge amount is larger than the treatment amount in the discharge process can be avoided.

The angle-adjustable guniting supporting machine for mining production comprises a bottom plate, the left side of the upper surface of the bottom plate is fixedly connected with an electrical control box, the right side of the upper surface of the bottom plate is in bolt connection with a supporting seat, and a storage tank is installed on the portion, between the electrical control box and the supporting seat, of the upper surface of the bottom plate through bolts; rolling wheels are installed at the four corners of the lower surface of the bottom plate, a motor is connected to the middle position of the lower surface of the bottom plate through bolts, a suction pump is installed on the upper surface of the bottom plate, and a spray head is arranged above the right side of the supporting seat. And a hydraulic cylinder is mounted in the supporting seat. According to the angle-adjustable guniting supporting machine for mining production, the hydraulic cylinder drives the rack to move upwards or downwards, so that the rack drives the meshed driven gear to rotate forwards and backwards, the connecting frame is used for driving the spray head to rotate upwards or downwards, then the angle of the spray head can be adjusted, the guniting uniformity and compactness are improved, and different guniting positions are met.

The large ball mill comprises a base, a supporting side plate is fixedly installed on the top face of the base, a grinding chamber is rotationally connected to the side face of the supporting side plate, one end of the grinding chamber communicates with a discharging chamber, a side motor is fixedly installed on the side face of the discharging chamber, and spiral blades are installed at the output end of the side motor; and a screening mechanism is arranged on the inner wall of the discharging chamber. Automatic screening and cyclic utilization of materials are achieved through linkage of the filter plate and the spiral blade, qualified materials are directly discharged after being screened, unqualified materials can flow back to the grinding chamber for secondary grinding, the requirement for manual intervention is reduced, the overall grinding efficiency and the product quality are improved, and the production cost is reduced. Meanwhile, the filter plate vibrates up and down through linkage of the extrusion rod and the spring A, the screening process is effectively accelerated through the mechanical vibration, materials are prevented from blocking the filter plate, the filtering efficiency is ensured, and the production continuity is improved.

This utility model discloses a multi-stage fine filtration device for pharmaceutical powder preparations, relating to the field of pharmaceutical powder preparation fine filtration technology. It includes a tank, inside which is a multi-stage sieving assembly for fine filtration of pharmaceutical powder; the tank also includes a dispersing assembly to facilitate uniform fine filtration of the pharmaceutical powder. The rotational motion of the dispersing assembly drives the multi-stage sieving assembly to vibrate and sieve up and down. A feed pipe is fixedly connected to the top outer wall of the tank, and a support base is fixedly connected to the bottom outer wall of the tank. This utility model achieves gradual fine filtration of pharmaceutical powder from coarse to fine through the multi-stage sieving assembly to improve filtration accuracy. The dispersing assembly uniformly disperses the powder and drives the sieving assembly to vibrate, thereby improving sieving efficiency. Furthermore, the structure is rationally designed, combining practicality and stability.