Automatic pill screening equipment and method

Abstract

The invention discloses an automatic pill screening device and method, and relates to the field of pill screening, the automatic pill screening device comprises a rack and a feeding end, and the inner wall of the rack is provided with a screening assembly for screening pills; through the screening assembly, the pills are screened through vibration and material pushing treatment, separation of qualified pills from agglomerated unqualified pills is effectively achieved, in the screening process, the qualified pills are collected, the unqualified pills with agglomerated surfaces are subjected to vibration and material pushing treatment, the vibration can shake and open agglomerated objects on the surfaces of the pills, and therefore the quality of the pills is improved. Most of cakes are effectively removed, for the cakes which cannot be completely removed through vibration, the cakes on the pills are further broken through treatment of a material pushing plate, the caking phenomenon on the surfaces of the pills is remarkably reduced, meanwhile, the cakes removed from the surfaces of the pills are screened through a screening net, and the screening efficiency is improved. And the pills which do not pass through the screening net can be conveyed again to be subjected to secondary treatment of vibration and material pushing, so that the pills can be ensured to pass through the caking removing process again.

Description

Technical Field

[0001] The present invention relates to the field of pill screening, and particularly to an automatic pill screening device and method. Background Art

[0002] Pill screening devices are very important in the pharmaceutical industry. They are widely used in various links of drug production, including the screening of drug raw materials, the production of granule preparations, and drug packaging. In these links, the screening devices can accurately separate according to the characteristics of drug particles such as size and shape, so as to ensure the quality, uniformity, and stability of drugs.

[0003] According to the search of Chinese Patent CN211217492U, a pill particle size screening device is disclosed, including a screening box. An upper feeding mechanism is arranged above the screening box, and a screening mechanism is arranged below the upper feeding mechanism. The screening mechanism includes two screening nets, which are horizontally arranged from top to bottom inside the screening box. The screening net includes a horizontally arranged rectangular frame. A plurality of first steel wires extending in the left-right direction are evenly distributed along the front-back direction on the upper end surface of the rectangular frame. Limiting blocks are arranged at both the front and rear ends on the right side of the upper end surface of the rectangular frame. Square holes extending in the front-back direction and corresponding to the front and back of the rectangular frame are opened on the limiting blocks. A rectangular block sliding in the front-back direction is slidably arranged between the two square holes, and a plurality of second steel wires extending in the left-right direction are evenly distributed along the front-back direction on the left end surface of the rectangular block; According to the search of Chinese Patent CN210058937U, which relates to the technical field of pill screening devices, a new type of oscillating pill screening machine is disclosed, including an "L"-shaped machine frame composed of a base and a vertical frame. A feeding hopper is fixedly arranged at the upper end of the vertical frame. A receiving tray is arranged below the feeding hopper, and the receiving tray is arranged on a feeding oscillator, and the feeding oscillator is fixedly installed on the vertical frame; A screening oscillator is fixedly installed above the base, a sieve body is installed on the screening oscillator, a sieve grid is arranged on the sieve body, a screening net is arranged in the sieve grid, and corresponding discharge ports are arranged on both the sieve body and the sieve grid. The utility model has high screening accuracy, large processing capacity, simple structure, low energy consumption, convenient maintenance, and can be used for automatic operation in pipeline production.

[0004] According to Chinese Patent CN213594651U, an automatic pill screening and filling device is disclosed, including a workbench. An installation machine is installed on the outer side of the workbench, a conveyor belt is installed inside the workbench, a pill discharging machine is installed on one side wall of the installation machine, a vibrating sieve plate is installed inside the pill discharging machine, a turning handle is installed on one side wall of the vibrating sieve plate, a vibrating shaft is rotatably installed inside the vibrating sieve plate, an exciting machine is arranged outside the pill discharging machine, and the output end of the exciting machine is fixedly connected to the vibrating shaft. The output end of the material sensor is electrically connected to the input end of the controller. A number of fixing blocks are evenly installed on the upper surface of the conveyor belt. The structure of the present utility model is simple. By putting the pills on the vibrating sieve plate and then starting the exciting machine, the exciting machine drives the vibrating shaft to vibrate, the vibrating shaft drives the vibrating sieve plate to vibrate, and then the intact and undamaged pills are screened out, and the broken and damaged pills are collected in the waste box.

[0005] The above patent drives the rotating shaft to rotate through the first driving mechanism, thereby driving the blanking disc to rotate, and the pills fall from the blanking through holes, making the pills spill more evenly; the setting of the vibration motor makes the screening net vibrate, and the vibrating screening net makes the screening efficiency higher; observe the internal situation of the screening box through the observation window and open the observation window to adjust the position of the rectangular block; the setting of the universal roller with brakes facilitates the movement and fixation of the screening box. The existing pill screening equipment has the following inconveniences when in use: However, the surface of the pills is prone to caking during the production process. Although different pills can be screened and the caked pills can be screened out and collected, the collected caked pills still need to be manually de-caked, which not only increases the work burden but also may affect the production efficiency.

[0006] Therefore, it is very necessary to propose an automatic pill screening device and method to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide an automatic pill screening device and method to solve the above-mentioned problems.

[0008] To achieve the above purpose, the present invention provides the following technical solution: An automatic pill screening device includes a frame and a feeding end. A screening component for screening pills is arranged on the inner wall of the frame. The screening component includes a screening net. The screening net is slidably arranged on the inner wall of the frame. A vibrating machine for driving the screening net to slide is fixedly arranged on the inner wall of the frame. A pushing plate is slidably arranged on the surface of the frame. The pushing plate is in sliding contact with the screening net.

[0009] Preferably, sliders are arranged on both sides of the frame. Sliding grooves are opened on both sides of the screening net. The screening net is slidably connected to the outer side wall of the slider through the sliding grooves.

[0010] Preferably, a push plate is rotatably arranged on one side of the frame away from the screening net. A frame is fixedly arranged on the surface of the frame. A sliding plate is slidably connected to the inner wall of the frame. An inclined plate is fixedly arranged on the side of the sliding plate close to the screening net. A vertical rod is fixedly arranged at the bottom of the frame.

[0011] Preferably, a sliding rod is slidably connected to the inner wall of the vertical rod. A spring is fixed to the inner wall of the sliding rod. One end of the spring is fixed to the inner wall of the vertical rod. The pushing plate is fixed to the bottom of the vertical rod. One side of the push plate close to the screening net is rotatably connected to the screening net through a first connecting rod. One side of the push plate close to the sliding plate is rotatably connected through a second connecting rod.

[0012] Preferably, a first conveying pipe is fixedly arranged on one side of the frame close to the push plate. A feeding groove is formed on one side of the screening net close to the first conveying pipe. The feeding groove is slidably connected to the first conveying pipe. A fan is fixedly arranged on one side of the frame close to the feeding end. A second conveying pipe is connected to one side of the feeding end. One end of the first conveying pipe is connected to the input end of the fan. One end of the second conveying pipe is fixed to the output end of the fan.

[0013] Preferably, a dispersion assembly for dispersing the lumps on the pills is arranged on the inner wall of the second conveying pipe. The dispersion assembly includes a rotating shaft. The rotating shaft is rotatably arranged on the inner wall of the second conveying pipe. A screening blade is fixedly arranged on the outer side wall of the rotating shaft.

[0014] Preferably, a screening hole is formed on one side of the second conveying pipe. A connecting pipe is connected to one side of the second conveying pipe close to the screening hole. A collecting box is arranged on one side of the frame close to the fan. The connecting pipe is connected to the collecting box.

[0015] Preferably, a dredging assembly for dredging the screening net is arranged on the frame. The dredging assembly includes a rotating rod. The rotating rod is rotatably arranged on both sides of the frame. A screening rod is fixed to the outer side wall of the rotating rod.

[0016] Preferably, a rack is fixedly arranged on the surface of the screening net. A gear is fixed to one end of the rotating rod close to the rack. The gear is meshed with the rack.

[0017] The present invention also discloses an automatic pill screening method, including the following steps: S1: First, put the pills into the feeding end of the device. Then, start the vibrating machine to drive the screening net to slide along the inner wall of the frame. During the sliding of the screening net, the pills are pushed and slide forward along the surface of the screening net, thereby realizing the preliminary screening of the pills. This step can effectively remove unqualified pills and thus conduct a preliminary screening of the pills; S2: When the screening net slides, it can not only perform preliminary screening of pills, but also cleverly use its own movement to push the push plate, which then drives the sliding plate to move, so that the push plate can specifically knock on the agglomerated pills on the screening net that are large or fail to fall into the net smoothly. This design effectively breaks up the agglomerates on the pills; S3: After the initial crushing of the pills, some agglomerated pills that have not been completely crushed may still remain on the screening net. As the screening net continues to slide, these pills are pushed into the feeding chute. At this time, the fan starts to operate, and uses the suction force it generates to suck the pills from the feeding chute into the first conveying pipe and smoothly convey them to the second conveying pipe. In the second conveying pipe, the dispersing component can effectively disperse and screen the pills again, and further separate the agglomerates remaining on the pills. After this fine treatment, the qualified pills are re-conveyed to the feeding end, ready for the next round of screening or processing; S4: The reciprocating sliding characteristics of the screening net can automatically trigger the dredging function of the screening rod. During the rotation of the screening rod, its squeezing and plucking action can effectively clear the pills blocked in the mesh, thereby keeping the screening net unobstructed and ensuring the continuity and efficiency of pill transportation, which not only improves the efficiency of pill screening and collection.

[0018] Technical effects and advantages of the present invention: The present invention uses a screening component to make the pills undergo a vibration and pusher process to screen, effectively realizing the separation of qualified pills from unqualified pills that are agglomerated. During the screening process, qualified pills are collected, while unqualified pills with agglomerates on the surface are subjected to a vibration and pusher process. The vibration can shake and vibrate the agglomerates on the surface of the pills, effectively removing most of the agglomerates. For the agglomerates that cannot be completely removed by the vibration, the pusher plate process further breaks up the agglomerates on the pills, significantly reducing the agglomeration phenomenon on the surface of the pills. At the same time, the agglomerates removed from the surface of the pills are removed by the screening net. The pills that have completed the screening but failed to pass through the screening net will be transported again to the secondary treatment of vibration and pushing, ensuring that the pills can go through the de-agglomeration process again; by sliding the screening net, the pills will vibrate on the screening net and be effectively pushed. In this process, the sliding of the screening net not only realizes the transportation of the pills, but also cleverly completes the turning over of the pills. This design allows the pills to move continuously during transportation, so that the fine powder attached to the surface falls naturally from the screening net under the action of gravity and vibration. At the same time, in order to To further improve the cleanliness of the pill surface, the pills in the first conveying pipe can be sucked in by the suction force of the fan, and the pills can be blown back to the feed end for re-screening by its blowing force, so that the pills can undergo multiple screenings, thereby ensuring the accuracy of the final screening results; while the pills are transported for the second time by the blowing force of the fan, the lumps remaining on the pills are effectively dispersed and screened by the wind force of the fan, and the pills fall smoothly into the feed end through the screening holes, ready for the next step of processing or packaging, while the lumps are brought to the edge of the screening holes by the wind force, Finally, they fall into the collection box for subsequent unified processing; when the mesh holes on the screening net are blocked due to pill accumulation, the reciprocating sliding characteristics of the screening net can automatically trigger the dredging function of the screening rod. During the rotation of the screening rod, its squeezing and plucking action can effectively clear the pills blocked in the mesh holes, thereby keeping the screening net unobstructed and ensuring the continuity and efficiency of pill transportation. It not only improves the efficiency of pill screening and collection, but also significantly reduces the need for manual intervention through automatic dredging function, thereby reducing the failure rate and maintenance cost in the production process. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 This is a schematic diagram of the overall structure of the automatic pill screening device of the present invention; Figure 2 It is a schematic diagram of the frame, feed end and screening net of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 It is a schematic diagram of the rack, frame, screening rod and screening net of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle; Figure 6Schematic diagram of the vertical rod, sliding plate, sliding rod and pushing plate of the present invention; Figure 7 Schematic diagram of the fan, first conveying pipe and second conveying pipe of the present invention; Figure 8 Schematic diagram of the second conveying pipe, rotating shaft, screening blades and screening holes of the present invention; Figure 9 Schematic diagram of the frame, sliding groove and slider of the present invention.

[0019] In the figure: 1, frame; 2, feeding end; 3, screening assembly; 301, screening mesh; 302, vibrator; 303, pushing plate; 304, slider; 305, sliding groove; 306, pushing plate; 307, frame; 308, sliding plate; 309, inclined plate; 310, vertical rod; 311, sliding rod; 312, spring; 313, first connecting rod; 314, second connecting rod; 315, first conveying pipe; 316, blanking chute; 317, fan; 318, second conveying pipe; 4, dispersion assembly; 401, rotating shaft; 402, screening blades; 403, screening holes; 404, connecting pipe; 405, collection box; 5, dredging assembly; 501, rotating rod; 502, screening rod; 503, rack; 504, gear. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] The present invention provides a Figure 1 - Figure 9 type of automatic pill screening device as shown, including a frame 1 and a feeding end 2, which is firm and stable and bears the supporting role of the entire device. The feeding end 2 facilitates us to put the already made pills, preparing for the subsequent screening work. The collection tank equipped at the bottom of the frame 1 can effectively collect the screened pills, ensuring that the collection process of the pills is both convenient and efficient.

[0022] The inner wall of the frame 1 is provided with a screening component 3 for screening pills, mainly for separating qualified pills from lumped unqualified pills. During the screening process, qualified pills are collected, while unqualified pills with lumps on the surface are processed by a vibrating part and a feeding part. Vibration can shake off the lumps on the surface of the pills, effectively removing most of the lumps. For the lumps that cannot be completely removed by vibration, the feeding process further breaks the lumps on the pills, significantly reducing the lumps on the surface of the pills. At the same time, the lumps removed from the surface of the pills are screened through the screening mesh 301, and the pills that cannot pass through the screening mesh 301 will be processed again by vibration and feeding to ensure that the pills can go through the lump removal process again.

[0023] The screening component 3 includes a screening mesh 301. The screening mesh 301 is slidably arranged on the inner wall of the frame 1. The inner wall of the frame 1 is fixedly provided with a vibrating machine 302 for driving the screening mesh 301 to slide. The function of the vibrating machine 302 is to drive the screening mesh 301 to slide by generating reciprocating vibration, so as to realize the screening function of the pills.

[0024] A push plate 303 is slidably arranged on the surface of the frame 1. The push plate 303 is in sliding contact with the screening mesh 301. Sliders 304 are arranged on both sides of the frame 1. Sliding grooves 305 are opened on both sides of the screening mesh 301. The screening mesh 301 is slidably connected to the outer side wall of the slider 304 through the sliding grooves 305, so that the screening mesh 301 can be slidably connected to the outer side wall of the slider 304 through the sliding grooves 305, greatly increasing the sliding stability and smoothness between the screening mesh 301 and the frame 1, and ensuring the smooth progress of the screening process.

[0025] A push plate 306 is rotatably arranged on one side of the frame 1 away from the screening mesh 301. A frame 307 is fixedly arranged on the surface of the frame 1. A sliding plate 308 is slidably connected to the inner wall of the frame 307. An inclined plate 309 is fixedly arranged on one side of the sliding plate 308 close to the screening mesh 301. A vertical rod 310 is fixedly arranged at the bottom of the frame 307. A sliding rod 311 is slidably connected to the inner wall of the vertical rod 310. A spring 312 is fixed inside the sliding rod 311. One end of the spring 312 is fixed to the inner wall of the vertical rod 310. The push plate 303 is fixed to the bottom of the vertical rod 310. One side of the push plate 306 close to the screening mesh 301 is rotatably connected to the screening mesh 301 through a first connecting rod 313. One side of the push plate 306 close to the sliding plate 308 is rotatably connected through a second connecting rod 314; On one side of the frame 1 close to the push plate 306, a first conveying pipe 315 is fixedly arranged. On one side of the screening net 301 close to the first conveying pipe 315, a blanking chute 316 is opened. The blanking chute 316 is slidably connected to the first conveying pipe 315. On one side of the frame 1 close to the feeding end 2, a blower 317 is fixedly arranged. On one side of the feeding end 2, a second conveying pipe 318 is connected. One end of the first conveying pipe 315 is connected to the input end of the blower 317, and one end of the second conveying pipe 318 is fixedly connected to the output end of the blower 317. The input end of the blower 317 is connected to one end of the first conveying pipe 315, and its output end is fixedly connected to the second conveying pipe 318 connected to one side of the feeding end 2. The strong suction of the blower 317 can suck the pills in the first conveying pipe 315 and blow the pills back to the feeding end 2 for re-screening through its blowing force. By utilizing the suction and blowing force of the blower 317, the pills can be screened multiple times, thus ensuring the accuracy of the final screening result.

[0026] Working principle: When the made pills are put into the feeding end 2, the driving vibrator 302 starts to work. The rotation of the vibrator 302 drives the screening net 301 to slide reciprocally along the inner wall of the frame 1. As the screening net 301 slides, the pills gradually fall from the feeding end 2 onto the screening net 301. Under the reciprocating sliding action of the screening net 301, the pills slide along the surface of the screening net 301 towards the direction of the pushing plate 303. During this process, the pills not only slide but also roll and vibrate. This rolling and vibration helps the pills move more smoothly along the screening net 301, reducing the possibility of blockage. At the same time, during the vibration of the pills, the lumps or impurities attached to the surface of the pills will also become loose and fall off due to the vibration, thereby improving the purity and screening effect of the pills. As the screening net 301 slides, it further promotes the sliding and screening process of the pills; When the pills move along the conveying path to the lower part of the pushing plate 303, due to the reciprocating sliding of the screening net 301, during the forward sliding process of the screening net 301, it pushes the push plate 306 to rotate through the first connecting rod 313. After the push plate 306 receives the thrust from the screening net 301, it further drives the sliding plate 308 to slide forward along the frame 307 through the second connecting rod 314. During the forward sliding process of the sliding plate 308, the inclined plate 309 on it gradually contacts the sliding rod 311. As the inclined plate 309 continues to move forward, it pushes the sliding rod 311 to slide downward along the inner wall of the vertical rod 310. At this time, the spring 312 is compressed and contracts. As the sliding rod 311 slides downward along the vertical rod 310, the pushing plate 303 also moves downward. When the pushing plate 303 contacts the pills downward, the pushing plate 303 squeezes the lumps wrapped on the surface of the pills, effectively removing these unqualified parts. And those pills that pass the screening and meet the standards are smoothly squeezed from the screening net 301 into the collection tank under the squeezing action of the pushing plate 303; When the screening mesh 301 slides towards the blower 317, under the pulling action of the first connecting rod 313, the push plate 306 starts to rotate. As the push plate 306 rotates, the second connecting rod 314 pulls the sliding plate 308 to slide backward along the inner wall of the frame 307. During this process, the sliding plate 308 drives the inclined plate 309 to move together, gradually separating it from the sliding rod 311 and no longer in contact. As the inclined plate 309 separates from the sliding rod 311, the previously compressed spring 312 begins to recover its deformation and reset. Under the push of the spring 312, the sliding rod 311 and the pusher plate 303 thereon also reset and return to the initial position. The pusher plate 303 no longer contacts the pills. In this way, during the reciprocating sliding of the screening mesh 301, not only the screening of the pills is realized, but also the treatment of the caking on the pill surface is completed at the same time. When the screening mesh 301 slides to a certain position, the pusher plate 303 will extrude the pills to remove the caking; and when the screening mesh 301 slides towards the blower 317, the pusher plate 303 will reset in time to avoid unnecessary contact with the pills. This design not only ensures the screening efficiency but also ensures the accuracy of pill treatment. When the screening mesh 301 reciprocates, the pills will gradually accumulate on one side of the pusher plate 303 under its action. With the continuous reciprocating push of the screening mesh 301, these accumulated pills will smoothly slide off the inclined plate 309 and directly enter the first conveying pipe 315. At this time, the blower 317 starts to work, and uses the airflow generated by it to effectively convey the pills in the first conveying pipe 315 into the second conveying pipe 318. Subsequently, the pills in the second conveying pipe 318 will naturally fall into the feeding end 2 and thus re-enter the conveying system, ready to be conveyed to the screening mesh 301 again for secondary screening. This cyclic process ensures that even if there are missed caked pills in the initial screening, they can be processed through re-conveying and screening, greatly improving the screening accuracy and the quality of the pills. By subjecting the pills to vibration and pusher treatment for screening, the separation of qualified pills and caked unqualified pills is effectively achieved. During the screening process, the qualified pills are collected, while the unqualified pills with caking on the surface are treated through vibration and pusher. Vibration can shake off the caking on the pill surface and effectively remove most of the caking. For the caking that cannot be completely removed by vibration, the pusher plate 303 further breaks the caking on the pills, significantly reducing the caking phenomenon on the pill surface. At the same time, the removed caking on the pill surface is screened through the screening mesh 301, and the pills that cannot pass through the screening mesh 301 will be conveyed again for secondary treatment of vibration and pusher, ensuring that the pills can go through the caking removal process again. Considering that after the agglomerated pills are extruded by the pusher plate 303, there may still be a situation where the surface agglomeration is not completely crushed. A dispersion component 4 for dispersing the agglomeration on the pills is provided on the inner wall of the second conveying pipe 318. While using the power of the blower 317 to perform secondary conveying of the pills, the remaining agglomeration on the pills is effectively dispersed and screened by means of the wind force of the blower 317; By sliding the screening mesh 301, the pills vibrate on the screening mesh 301 and are effectively pushed. In this process, the sliding of the screening mesh 301 not only realizes the transportation of the pills but also cleverly completes the turning operation of the pills. Such a design enables the pills to move continuously during transportation, so that the fine powder adhering to their surfaces naturally falls from the screening mesh 301 under the action of gravity and vibration. At the same time, in order to further improve the cleanliness of the pill surface, the blower 317 can be used to suck the pills in the first conveying pipe 315 and blow the pills back to the feeding end 2 through its blowing force for re-screening, so that the pills can undergo multiple screenings, thereby ensuring the accuracy of the final screening result; The dispersion component 4 includes a rotating shaft 401. The rotating shaft 401 is rotatably arranged on the inner wall of the second conveying pipe 318. A screening blade 402 is fixedly arranged on the outer side wall of the rotating shaft 401. A screening hole 403 is opened on one side of the second conveying pipe 318. A connecting pipe 404 is connected to the side of the second conveying pipe close to the screening hole 403. A collection box 405 is arranged on one side of the frame 1 close to the blower 317. The connecting pipe 404 is connected to the collection box 405. A pull-out box is slidably arranged on the inner wall of the recycling box, making it more convenient to uniformly process the accumulated agglomeration in the recycling box later. The user only needs to simply pull out the pull-out box from the recycling box to easily clean the agglomeration, without having to perform cumbersome disassembly or cleaning operations on the entire recycling box.

[0027] It should be noted that the diameter of the screening hole 403 is smaller than the diameter of the pills, which ensures that the pills will not accidentally fall out when passing through the screening hole 403. When the pills pass through the screening hole 403, they are not only screened by the screening hole 403, but also come into contact with the inner wall of the first conveying pipe 315 during the process of entering the first conveying pipe 315. This contact further processes the possible agglomeration attached to the pills and improves the cleanliness of the pills. At the same time, since the agglomeration is smaller in size than the screening hole 403, it will smoothly fall from the screening hole 403 into the recycling box. Such a design not only ensures the integrity of the pills but also effectively collects the agglomeration, facilitating subsequent unified processing. The entire screening and conveying process becomes more efficient and accurate, improving the quality and production efficiency of the pills.

[0028] Working principle: When the fan 317 starts to work, the pills are smoothly sucked from the first conveying pipe 315 into the second conveying pipe 318. During the process of the pills passing through the first conveying pipe 315, they come into contact with the inner wall of the conveying pipe. This contact causes the lumps on the pills to be impacted, so as to be further separated from the pills. This step effectively reduces the amount of lumps attached to the surface of the pills. Subsequently, when the pills are conveyed into the second conveying pipe 318, the wind force of the fan 317 not only plays a role in pushing the pills forward, but also drives the screening blade 402 to rotate. The rotation of the screening blade 402 not only helps the pills to be flipped during the conveying process, making the pills and the lumps more thoroughly separated, but also increases the contact area between the pills and the wind force, improving the screening effect. After such flipping and screening operations, the pills and the lumps are effectively separated. The pills fall smoothly through the screening holes 403 into the feeding end 2, ready for the next step of processing or packaging, while the lumps are carried by the wind force to the edge of the screening holes 403 and finally fall into the collection box 405 for subsequent unified processing. This process makes full use of the dynamic characteristics of the fan 317 and the rotation function of the screening blade 402, not only improving the conveying efficiency of the pills, but also realizing the further separation of the pills and the lumps.

[0029] While using the blowing force of the fan 317 to conduct secondary conveying of the pills, the remaining lumps on the pills are effectively dispersed and screened by means of the wind force of the fan 317. The pills fall smoothly through the screening holes 403 into the feeding end 2, ready for the next step of processing or packaging, while the lumps are carried by the wind force to the edge of the screening holes 403 and finally fall into the collection box 405 for subsequent unified processing; Considering that the screening mesh 301 may be blocked due to the accumulation of pills during long-term use, a dredging component 5 for dredging the screening mesh 301 is provided on the frame 1. It mainly uses the force of the left and right sliding of the screening mesh 301 to dredge the pills on the screening mesh 301, avoiding the blockage situation that occurs when the screening mesh 301 conveys pills for a long time.

[0030] The dredging component 5 includes a rotating rod 501. The rotating rod 501 is rotatably arranged on both sides of the frame 1. A screening rod 502 is fixed on the outer side wall of the rotating rod 501. A rack 503 is fixedly arranged on the surface of the screening mesh 301. A gear 504 is fixed at one end of the rotating rod 501 close to the rack 503. The gear 504 is meshed with the rack 503; Working principle: During the reciprocating sliding of the screening net 301, it simultaneously drives the rack 503 to move synchronously, and the sliding of the rack 503 further drives the gear 504 to rotate, and the rotation of the gear 504 causes the screening rod 502 to rotate accordingly. During the rotation, the screening rod 502 is in close contact with the pills on the screening net 301, and by squeezing it, it is ensured that the pills can smoothly pass through the screening net 301 and fall into the collection tank. In addition, when the mesh on the screening net 301 is blocked due to the accumulation of pills, the reciprocating sliding characteristics of the screening net 301 can automatically trigger the dredging function of the screening rod 502. During the rotation of the screening rod 502, its squeezing and shifting actions can effectively clear the pills blocked in the mesh, thereby keeping the screening net 301 unobstructed, ensuring the continuity and efficiency of pill transportation, not only improving the efficiency of pill screening and collection, but also significantly reducing the need for manual intervention through the automatic dredging function, reducing the failure rate and maintenance cost in the production process.

[0031] The present invention also discloses a method for automatically screening pills, comprising the following steps: S1: First, the pills are placed into the feed end 2 of the device, and then the vibrator 302 is started to drive the screening net 301 to slide along the inner wall of the frame 1. During the sliding of the screening net 301, the pills are pushed and slide forward along the surface of the screening net 301, thereby achieving preliminary screening of the pills. This step can effectively remove unqualified pills, thereby performing preliminary screening of the pills; S2: When the screening net 301 slides, it can not only perform preliminary screening of pills, but also cleverly use its own movement to push the push plate 306, which then drives the sliding plate 308 to move, so that the push plate 303 can specifically knock on the agglomerated pills on the screening net 301 that are large or fail to fall into the net smoothly. This design effectively breaks up the agglomerates on the pills; S3: After the pills are initially crushed, some agglomerated pills that have not been completely crushed may still remain on the screening net 301. As the screening net 301 continues to slide, these pills are pushed into the feeding chute 316. At this time, the fan 317 starts to operate, and uses the suction force generated by it to suck the pills from the feeding chute 316 into the first conveying pipe 315, and smoothly convey them to the second conveying pipe 318. In the second conveying pipe 318, the dispersing component 4 can effectively disperse and screen the pills again, and further completely separate the agglomerates remaining on the pills. After this fine treatment, the qualified pills are re-conveyed to the feeding end 2, ready for the next round of screening or processing; S4: The reciprocating sliding characteristics of the screening net 301 can automatically trigger the dredging function of the screening rod 502. During the rotation of the screening rod 502, its squeezing and shifting actions can effectively clear the pills blocked in the mesh, thereby keeping the screening net 301 unobstructed, ensuring the continuity and efficiency of pill transportation, and not only improving the efficiency of pill screening and collection.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic pill screening device, comprising a frame (1) and a feed end (2), characterized in that: The inner wall of the frame (1) is provided with a screening component (3) for screening pills, the screening component (3) comprising a screening net (301), the screening net (301) being slidably arranged on the inner wall of the frame (1), a vibrator (302) for driving the screening net (301) to slide is fixedly arranged on the inner wall of the frame (1), and a push plate (303) is slidably arranged on the surface of the frame (1), the push plate (303) being in sliding contact with the screening net (301).

2. The automatic pill screening device according to claim 1, characterized in that: Slide blocks (304) are provided on both sides of the frame (1), and sliding grooves (305) are provided on both sides of the screening net (301). The screening net (301) is slidably connected to the outer side walls of the slide blocks (304) via the sliding grooves (305).

3. The automatic pill screening device according to claim 2, characterized in that: A push plate (306) is rotatably provided on a side of the frame (1) away from the screening net (301), a frame (307) is fixedly provided on the surface of the frame (1), a sliding plate (308) is slidably connected to the inner wall of the frame (307), an inclined plate (309) is fixedly provided on a side of the sliding plate (308) close to the screening net (301), and a vertical rod (310) is fixedly provided at the bottom of the frame (307).

4. The automatic pill screening device according to claim 3, characterized in that: The inner wall of the vertical rod (310) is slidably connected to a sliding rod (311), the inner wall of the sliding rod (311) is fixed with a spring (312), one end of the spring (312) is fixed to the inner wall of the vertical rod (310), the push plate (303) is fixed to the bottom of the vertical rod (310), the side of the push plate (306) close to the screening net (301) is rotatably connected to the screening net (301) via a first connecting rod (313), and the side of the push plate (306) close to the sliding plate (308) is rotatably connected via a second connecting rod (314).

5. The automatic pill screening device according to claim 4, characterized in that: A first conveying pipe (315) is fixedly provided on one side of the frame (1) close to the push plate (306); a material discharge chute (316) is provided on one side of the screening net (301) close to the first conveying pipe (315); the material discharge chute (316) is slidably connected to the first conveying pipe (315); a fan (317) is fixedly provided on one side of the frame (1) close to the feed end (2); a second conveying pipe (318) is connected to one side of the feed end (2); one end of the first conveying pipe (315) is connected to an input end of the fan (317); and one end of the second conveying pipe (318) is fixed to an output end of the fan (317).

6. The automatic pill screening device according to claim 5, characterized in that: The inner wall of the second conveying tube (318) is provided with a dispersing component (4) for dispersing lumps on the pills. The dispersing component (4) comprises a rotating shaft (401). The rotating shaft (401) is rotatably arranged on the inner wall of the second conveying tube (318). The outer wall of the rotating shaft (401) is fixedly provided with a screening blade (402).

7. The automatic pill screening device according to claim 6, characterized in that: A sieving hole (403) is provided on one side of the second conveying pipe (318), a connecting pipe (404) is connected to a side of the second conveying pipe close to the sieving hole (403), a collecting box (405) is provided on a side of the frame (1) close to the fan (317), and the connecting pipe (404) is connected to the collecting box (405).

8. The automatic pill screening device according to claim 1, characterized in that: The frame (1) is provided with a dredging assembly (5) for dredging the screening net (301), the dredging assembly (5) comprising a rotating rod (501), the rotating rod (501) being rotatably arranged on both sides of the frame (1), and a screening rod (502) being fixed to the outer side wall of the rotating rod (501).

9. The automatic pill screening device according to claim 8, characterized in that: A rack (503) is fixedly provided on the surface of the screening net (301), and a gear (504) is fixedly provided at one end of the rotating rod (501) close to the rack (503), and the gear (504) is meshingly connected with the rack (503).

10. A method for automatically screening pills, characterized in that: The automatic pill screening device according to any one of claims 1 to 9 further comprises the following steps: S1: First, the pills are placed into the feed end (2) of the device, and then the vibrator (302) is started to drive the screening net (301) to slide along the inner wall of the frame (1). During the sliding of the screening net (301), the pills are pushed and slide forward along the surface of the screening net (301), thereby achieving preliminary screening of the pills. This step can effectively remove unqualified pills, thereby performing preliminary screening of the pills; S2: When the screening net (301) slides, it can not only perform preliminary screening of pills, but also use its own movement to push the push plate (306), which in turn drives the sliding plate (308) to move, thereby causing the push plate (303) to specifically knock on the agglomerated pills that are larger or fail to fall into the screening net (301), thereby effectively breaking up the agglomerated pills; S3: After the pills have been initially crushed, some agglomerated pills that have not been completely crushed may still remain on the screening net (301). As the screening net (301) continues to slide, these pills are pushed into the feed chute (316). At this time, the fan (317) starts to operate, and uses the suction force generated by it to suck the pills from the feed chute (316) into the first conveying pipe (315), and smoothly convey them to the second conveying pipe (318). In the second conveying pipe (318), the dispersing component (4) can effectively disperse and screen the pills again, and further completely separate the agglomerates remaining on the pills. After this fine treatment, the qualified pills are re-conveyed to the feed end (2) to prepare for the next round of screening or processing; S4: The reciprocating sliding characteristics of the screening net (301) can automatically trigger the unblocking function of the screening rod (502). During the rotation process, the squeezing and shifting actions of the screening rod (502) can effectively clear the pills blocked in the mesh, thereby maintaining the unblocked state of the screening net (301), ensuring the continuity and efficiency of pill transportation, and improving the efficiency of pill screening and collection.

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