Device for rapid sieving of choline tablet powder
By introducing a drying mechanism and a screening mechanism into the choline tablet powder screening device, combined with dust removal and vibration reduction measures, the problem of screen clogging caused by powder agglomeration was solved, screening efficiency and accuracy were improved, and energy consumption and equipment wear were reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN BIOCHEM PHARMA
- Filing Date
- 2025-08-13
- Publication Date
- 2026-08-04
AI Technical Summary
Existing choline tablet powder screening devices are prone to clogging of the screen holes due to agglomeration and adhesion during the screening process, which affects screening efficiency and cost. Furthermore, existing solutions such as ultrasonic vibrators have high energy consumption and short service life of elastic screens.
The drying mechanism dries the powder through a heat-conducting hollow tube and spiral blades. Combined with the rotating shaft, cam and tie rod in the sieving mechanism, the coarse and fine sieve plates are driven to vibrate and sieve. It is equipped with a dust collection component to collect dust and uses damping rods and shock-absorbing springs to reduce noise and vibration.
This method achieves uniform drying of choline tablet powder, improves sieving efficiency and accuracy, reduces agglomeration, lowers energy consumption and equipment wear, and ensures production continuity and product quality.
Smart Images
Figure CN224586360U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of powder sieving technology, and in particular to a rapid sieving device for choline tablet powder. Background Technology
[0002] In modern pharmaceutical industry, choline tablets are a commonly used drug for treating respiratory diseases. The main components, pig bile powder and aminophylline, need to be finely sieved to ensure uniform particle size, removal of impurities, and compliance with drug quality standards. Therefore, designing an efficient choline tablet powder rapid sieving device is key to ensuring drug quality and improving production efficiency.
[0003] The rapid sieving device for choline tablet powder aims to achieve rapid grading and impurity separation of choline tablet raw material powder. Through the principle of mechanical vibration and airflow screening, it effectively distinguishes powders of different particle sizes. The device mainly includes a sieve box, sieve mesh, vibration source, feed and discharge port. During its operation, the uniform conveying of powder, high-frequency vibration sieving and accurate discharge directly affect the sieving effect and drug quality.
[0004] Because choline tablets have a small particle size and a certain degree of hygroscopicity, they tend to agglomerate and adhere to the screen during sieving, causing screen blockage and a significant decrease in sieving efficiency. Existing technologies address this by installing an ultrasonic vibrator at the bottom of the screen to break up powder agglomerates through high-frequency vibration, thus reducing screen blockage. They also use elastic polyurethane screens instead of traditional metal screens to reduce powder adhesion by utilizing the material's elasticity. However, the ultrasonic devices consume a lot of energy, leading to increased operating costs. Furthermore, the elastic screens have a shorter lifespan under high-frequency vibration, requiring frequent replacements. These technologies fail to fundamentally solve the problem, and the issue of screen blockage persists. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a rapid sieving device for choline tablet powder, which aims to improve the problem in the prior art where choline tablet powder agglomerates and adheres to the screen during the sieving process, causing screen clogging.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rapid sieving device for choline tablet powder, comprising a sieve box and a feeding hopper, wherein a drying mechanism is provided inside the feeding hopper for drying choline tablet powder, and a sieving mechanism is provided inside the sieve box for rapidly sieving choline tablet powder of different sizes.
[0007] The drying mechanism includes a mounting plate, the front and rear ends of which are fixedly connected to the front and rear sides of the inside of the feeding hopper, a first motor is fixedly connected to the top of the mounting plate, a conveying pipe is connected to the bottom of the feeding hopper, a heat-conducting hollow tube is fixedly connected to the output end of the first motor, a spiral blade is fixedly connected to the outer wall of the heat-conducting hollow tube, and a dust removal component is provided at the top left end of the inner side of the screen box.
[0008] As a further description of the above technical solution:
[0009] The screening mechanism includes a second motor, the rear of which is fixedly connected to the front right end of the screen box. Rotary shafts are rotatably connected to the front and rear right ends of the screen box. Cams are rotatably connected to adjacent sides of the two rotating shafts. Connecting rods are fixedly connected to the top of adjacent cams. A pull rod is rotatably connected to the middle of the outer side of the connecting rod. A coarse screen plate is rotatably connected to the left end of the pull rod. Connecting plates are rotatably connected to the front left and right ends and the rear left and right ends of the coarse screen plate. The same fine screen plate is rotatably connected to the bottom of adjacent sides of the two front connecting plates and the two rear connecting plates. A collection assembly is provided on the left side of the screen box.
[0010] As a further description of the above technical solution:
[0011] The dust removal assembly includes a dust collection hood, the top of which is fixedly connected to the top left end of the inner side of the screen box. A fan is fixedly connected to the top of the dust collection hood, and a conveying pipe is connected to the rear side of the fan. The bottom end of the conveying pipe is connected to a collection box.
[0012] As a further description of the above technical solution:
[0013] The collection assembly includes multiple positioning posts, the right ends of which are fixedly connected to the front and rear ends of the left side of the screen box. Material boxes are slidably connected to the front and rear ends of the left side of the screen box, and slots are provided at the front and rear ends of the top right side of the two material boxes.
[0014] As a further description of the above technical solution:
[0015] The bottom inner side of the screen box is fixedly connected to triangular inclined blocks on both the left and right ends, and the bottom inner side of the screen box is connected to a discharge pipe.
[0016] As a further description of the above technical solution:
[0017] Damping rods are fixedly connected to the four corners of the bottom of the screen box. Shock-absorbing springs are slidably connected to the outer side of each of the damping rods. The bottom of each of the damping rods is fixedly connected to the same bracket.
[0018] As a further description of the above technical solution:
[0019] The bottom of the conveying pipe is connected to the top of the screen box, and the bottom of the fan passes through the top left side of the screen box and is fixedly connected to the top of the dust collection hood.
[0020] As a further description of the above technical solution:
[0021] The outer middle parts of the two front positioning posts are slidably connected to the inner sides of the two front slots, and the outer middle parts of the two rear positioning posts are slidably connected to the inner sides of the two rear slots.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the choline tablet powder first enters the feed hopper. The first motor drives the heat-conducting hollow tube to rotate. The heating wire inside the heat-conducting hollow tube generates heat and transfers it to the tube wall. At the same time, the spiral blades rotate with the heat-conducting hollow tube, pushing the powder to move in the feed hopper, so that the powder can fully contact the heat-conducting hollow tube to achieve drying. This achieves uniform drying of the choline tablet powder, reduces agglomeration caused by humidity, provides qualified raw materials for subsequent screening, and improves screening efficiency and accuracy.
[0024] 2. In this utility model, a second motor drives a rotating shaft to rotate, which in turn drives a cam to rotate. The cam, via a connecting rod, causes a pull rod to move. The pull rod pulls the coarse sieve plate to vibrate up and down. The coarse sieve plate, via a connecting plate, drives the fine sieve plate to vibrate synchronously. The coarse powder and fine powder fall into their respective material boxes, thus achieving graded sieving of choline tablet powder. This improves sieving accuracy and efficiency, avoids mixing of powders of different particle sizes, ensures stable product quality, and enhances production continuity and reliability. Attached Figure Description
[0025] Figure 1 This is a front view of the rapid sieving device for choline tablet powder proposed in this utility model;
[0026] Figure 2 This is a perspective view of the rapid sieving device for choline tablet powder proposed in this utility model;
[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0028] Figure 4 This is a cross-sectional view of the sieve box of the rapid sieving device for choline tablet powder proposed in this utility model;
[0029] Figure 5 This is a schematic diagram of the fine sieve plate of the rapid sieving device for choline tablet powder proposed in this utility model.
[0030] Legend:
[0031] 1. Screen box; 2. Feed hopper; 3. Drying mechanism; 301. Mounting plate; 302. First motor; 303. Conveying pipe; 304. Heat-conducting hollow pipe; 305. Spiral blade; 306. Dust removal assembly; 3061. Dust collection hood; 3062. Fan; 3063. Conveying pipe; 3064. Collection box; 4. Screening mechanism; 401. Second motor; 402. Rotating shaft; 403. Cam; 404. Connecting rod; 405. Pull rod; 406. Coarse screen plate; 407. Connecting plate; 408. Fine screen plate; 409. Collection assembly; 4091. Positioning column; 4092. Material box; 4093. Slot; 5. Triangular inclined block; 6. Discharge pipe; 7. Damping rod; 8. Shock-absorbing spring; 9. Support. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a rapid sieving device for choline tablet powder, comprising a sieve box 1 and a feed hopper 2. The feed hopper 2 is equipped with a drying mechanism 3, which is used to dry the choline tablet powder, reducing powder humidity and minimizing agglomeration caused by moisture absorption. The sieve box 1 is equipped with a sieving mechanism 4, which is used to rapidly sieve choline tablet powder of different sizes, achieving efficient powder grading and improving sieving accuracy. The drying mechanism 3 includes a mounting plate 301, whose front and rear ends are fixedly connected to the front and rear sides of the feed hopper 2, respectively, providing a stable mounting base for the first motor 302. A first motor 302 is fixedly connected to the top of plate 301, which provides power for the rotation of heat-conducting hollow tube 304 and spiral blade 305. The bottom of feed hopper 2 is connected to conveying pipe 303, which facilitates the conveying of dried powder to sieve box 1. The output end of the first motor 302 is fixedly connected to heat-conducting hollow tube 304. Heating wire is installed inside heat-conducting hollow tube 304, which can generate heat and transfer it to the surrounding powder to achieve heating and drying of powder. Spiral blade 305 is fixedly connected to the outer wall of heat-conducting hollow tube 304, which can push the powder to move in feed hopper 2, so that the powder is in full contact with heat-conducting hollow tube 304 and improves drying efficiency.
[0034] A dust removal component 306 is provided at the top left of the inner side of the sieve box 1, which can collect the dust generated during the screening process and improve the working environment. The dust removal component 306 includes a dust collection hood 3061. The top of the dust collection hood 3061 is fixedly connected to the top left of the inner side of the sieve box 1, which can effectively collect the dust in the sieve box 1. A fan 3062 is fixedly connected to the top of the dust collection hood 3061, which can provide power for the collection and transportation of dust. A conveying pipe 3063 is connected to the rear side of the fan 3062, which can transport the dust to the collection box 3064. The bottom end of the conveying pipe 3063 is connected to the collection box 3064, which can collect the dust in a concentrated manner and prevent the dust from leaking out and causing pollution.
[0035] Specifically, after the choline tablet powder enters the feed hopper 2, the first motor 302 fixed by the mounting plate 301 starts, driving the heat-conducting hollow tube 304 at the output end to rotate. The heating wire inside generates heat and transfers it to the tube wall. The spiral blades 305 on the outer wall rotate with it, pushing the powder to move, so that the powder can fully contact the heat-conducting hollow tube 304 to dry. After drying, the powder enters the sieve box 1 through the conveying pipe 303. The dust generated during sieving is treated. The dust collection hood 3061 at the top left end of the inner side of the sieve box 1 is aligned with the dust area. The top fan 3062 is started to generate suction, sucking in the dust and sending it to the collection box 3064 through the conveying pipe 3063 for centralized collection, avoiding leakage and pollution.
[0036] Reference Figure 1 , Figure 3 and Figure 4 The screening mechanism 4 includes a second motor 401, whose rear side is fixedly connected to the front right end of the screen box 1. This provides power output for the operation of the screening mechanism 4, ensuring stable screening. Rotary shafts 402 are rotatably connected to the front and rear right ends of the screen box 1, supporting cams 403 and transmitting power to ensure stable rotation of the cams 403. Cams 403 are rotatably connected to adjacent sides of the two rotating shafts 402. Rotation of these cams drives the connecting rod 404 up and down, achieving power conversion for screening. Connecting rods 404 are fixedly connected to the top of adjacent cams 403, synchronously transmitting the movement of the two cams 403 to ensure coordinated screening. The outer side of the connecting rod 404... A pull rod 405 is rotatably connected in the middle, which can transmit the movement of the cam 403 to the coarse sieve plate 406, driving the coarse sieve plate 406 to perform sieving action. The left end of the pull rod 405 is rotatably connected to the coarse sieve plate 406, which can perform preliminary sieving of choline tablet powder, separating out larger particles of impurities or coarse powder. The left and right ends of the front and rear sides of the coarse sieve plate 406 are rotatably connected to the connecting plates 407, which can connect the coarse sieve plate 406 and the fine sieve plate 408, so that the two move in linkage, improving sieving efficiency. The bottom of the adjacent side of the two front connecting plates 407 and the two rear connecting plates 407 are rotatably connected to the same fine sieve plate 408, which can perform fine sieving again on the powder that has passed through the coarse sieve to obtain fine powder that meets the particle size requirements.
[0037] A collection component 409 is provided on the left side of the sieve box 1, which can classify and collect powders of different particle sizes after sieving for subsequent processing. The collection component 409 includes multiple positioning columns 4091. The right ends of the multiple positioning columns 4091 are fixedly connected to the front and rear ends of the left side of the sieve box 1, which can position the material box 4092 and prevent it from shifting during the collection process. The front and rear ends of the left side of the sieve box 1 are slidably connected to the material box 4092, which can collect powders after coarse sieving and fine sieving respectively, and realize classified storage. The front and rear ends of the right top of the two material boxes 4092 are provided with slots 4093, which can cooperate with the positioning columns 4091 to fix the material box 4092 and ensure that it remains stable during the operation of the equipment.
[0038] Specifically, after the dried powder enters the sieve box 1, the second motor 401 is started. The second motor 401 drives the rotating shaft 402 to rotate. The two rotating shafts 402 drive the cam 403 to rotate. The cam 403 moves synchronously through the connecting rod 404 fixed at the top between adjacent parts. The connecting rod 404 drives the pull rod 405 to reciprocate. The pull rod 405 pulls the coarse sieve plate 406 connected to the left end to vibrate up and down. The coarse sieve plate 406 coarsely sieves the powder. At the same time, the coarse sieve plate 406 drives the same fine sieve plate 408 at the bottom to vibrate synchronously through the connecting plates 407 connected to the front, rear and left and right ends to finely sieve. The sieved coarse powder and fine powder fall into the material box 4092 slidably connected to the left side of the sieve box 1. The material box 4092 cooperates with the positioning column 4091 fixed on the left side of the sieve box 1 through the right side slot 4093 to ensure that the equipment is stable and does not shift during operation, thus completing the sieving and collection of powder.
[0039] Reference Figure 2 , Figure 3 and Figure 5 Triangular inclined blocks 5 are fixedly connected to the bottom left and right sides of the inner side of the sieve box 1. These blocks guide the powder that leaks to the bottom of the sieve box 1 after screening to gather in the middle, making it easier to discharge through the discharge pipe 6 and improving the integrity of powder collection. The discharge pipe 6 is connected to the bottom of the inner side of the sieve box 1, which can discharge the powder gathered by the triangular inclined blocks 5 out of the sieve box 1, realizing the centralized processing of the powder at the bottom. Damping rods 7 are fixedly connected to the four corners of the bottom of the sieve box 1, which can provide installation support and guidance for the shock-absorbing springs 8, ensuring that the shock-absorbing springs 8 extend and retract in a fixed direction. The shock-absorbing springs 8 are slidably connected to the outer sides of multiple damping rods 7, which can absorb the impact force generated by the vibration of the sieve box 1, reduce the noise of the device during operation and the vibration impact on the ground. The bottom of multiple damping rods 7 is fixedly connected to the same bracket 9, which can stably support the entire device and improve the overall stability of the equipment during operation. The bottom of the conveying pipe 303 is connected to the top of the sieve box 1, which can transport the dried powder in the feed hopper 2 to the sieve box 1 for screening, realizing the smooth connection between the drying and screening processes.
[0040] The bottom of the blower 3062 penetrates the top left side of the sieve box 1 and is fixedly connected to the top of the dust collection hood 3061, which can ensure the sealed connection between the blower 3062 and the dust collection hood 3061 and improve the efficiency of dust collection. The outer middle part of the two front positioning columns 4091 is slidably connected to the inner side of the two front slots 4093 respectively, and the outer middle part of the two rear positioning columns 4091 is slidably connected to the inner side of the two rear slots 4093 respectively. Through the cooperation of the positioning columns 4091 and the slots 4093, the material box 4092 and the sieve box 1 can be quickly positioned and disassembled, which is convenient for cleaning and transferring the powder in the material box 4092.
[0041] Specifically, the dried powder is conveyed to the sieve box 1 through the conveying pipe 303. The conveying pipe 303 connects the drying and sieving processes. The fan 3062 is fixedly connected to the dust collection hood 3061 to ensure sealing and improve dust collection efficiency. When the sieve box 1 vibrates, the damping rod 7 and the shock-absorbing spring 8 work together to reduce vibration. The bracket 9 stably supports the entire device. The powder that leaks to the bottom of the sieve box 1 is guided by the triangular inclined blocks 5 fixed at the left and right ends to gather and is discharged through the discharge pipe 6 connected to the bottom of the inner side. The sieved powder falls into the material box 4092. The two positioning posts 4091 on the front side are slidably connected to the two slots 4093 on the front side, and the two positioning posts 4091 on the rear side are slidably connected to the two slots 4093 on the rear side, respectively, so as to realize the quick positioning and disassembly of the material box 4092 and the sieve box 1, which is convenient for cleaning and transportation.
[0042] Working principle: The choline tablet powder first enters the feed hopper 2, and the first motor 302 is started. The first motor 302 drives the heat-conducting hollow tube 304 to rotate. The heating wire in the heat-conducting hollow tube 304 generates heat and transfers it to the tube wall. At the same time, the spiral blades 305 rotate with the heat-conducting hollow tube 304 and push the powder to move in the feed hopper 2, so that the powder can fully contact the heat-conducting hollow tube 304 to achieve drying. The dried powder enters the sieve box 1 through the conveying pipe 303. The dust generated during the sieving process is sucked in by the started fan 3062 through the dust collection hood 3061 and conveyed to the collection box 3064 through the conveying pipe 3063 for centralized collection.
[0043] Furthermore, the dried choline tablet powder falls onto the coarse screen plate 406 of the screening mechanism 4. The second motor 401 starts and drives the rotating shaft 402 to rotate. The rotating shaft 402 drives the cam 403 to rotate. The cam 403 drives the pull rod 405 to move through the connecting rod 404. The pull rod 405 pulls the coarse screen plate 406 to vibrate up and down for coarse screening. The powder after coarse screening falls onto the fine screen plate 408. At the same time, the coarse screen plate 406 drives the fine screen plate 408 to vibrate synchronously through the connecting plate 407 for fine screening. The coarse powder screened out by the coarse screen plate 406 and the fine powder screened out by the fine screen plate 408 fall into the corresponding material box 4092 respectively. The powder that leaks to the bottom of the screen box 1 is gathered under the guidance of the triangular inclined block 5 and discharged through the discharge pipe 6. When the screen box 1 vibrates, the damping rod 7 and the shock-absorbing spring 8 work together to play a shock-absorbing and buffering role, while the bracket 9 stably supports the entire device.
[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A device for rapid screening of choline bitartrate powder, comprising a screening box (1) and a feeding hopper (2), characterized in that: The feed hopper (2) is equipped with a drying mechanism (3) for drying choline tablet powder. The sieve box (1) is equipped with a sieving mechanism (4) for quickly sieving choline tablet powder of different sizes. The drying mechanism (3) includes a mounting plate (301), the front and rear ends of which are fixedly connected to the front and rear sides of the inside of the feed hopper (2), a first motor (302) is fixedly connected to the top of the mounting plate (301), a conveying pipe (303) is connected to the bottom of the feed hopper (2), a heat-conducting hollow tube (304) is fixedly connected to the output end of the first motor (302), a spiral blade (305) is fixedly connected to the outer wall of the heat-conducting hollow tube (304), and a dust removal component (306) is provided at the top left end of the inner side of the sieve box (1).
2. The device according to claim 1, wherein: The screening mechanism (4) includes a second motor (401), the rear side of which is fixedly connected to the front right end of the screen box (1). The front and rear right ends of the screen box (1) are rotatably connected to a rotating shaft (402). A cam (403) is rotatably connected to the adjacent side of the two rotating shafts (402). A connecting rod (404) is fixedly connected to the top of the two adjacent cams (403). A pull rod (405) is rotatably connected to the middle of the outer side of the connecting rod (404). A coarse screen plate (406) is rotatably connected to the left end of the pull rod (405). A connecting plate (407) is rotatably connected to the left and right ends of the front and rear sides of the coarse screen plate (406). A fine screen plate (408) is rotatably connected to the bottom of the adjacent side of the two front connecting plates (407) and the two rear connecting plates (407). A collection component (409) is provided on the left side of the screen box (1).
3. The device according to claim 1, wherein: The dust removal assembly (306) includes a dust collection hood (3061), the top of which is fixedly connected to the top left end of the inner side of the screen box (1). A fan (3062) is fixedly connected to the top of the dust collection hood (3061), and a conveying pipe (3063) is connected to the rear side of the fan (3062). The bottom end of the conveying pipe (3063) is connected to a collection box (3064).
4. The device according to claim 2, wherein: The collection component (409) includes multiple positioning posts (4091), the right ends of the multiple positioning posts (4091) are respectively fixedly connected to the front and rear ends of the left side of the sieve box (1), and the front and rear ends of the left side of the sieve box (1) are slidably connected to material boxes (4092), and the front and rear ends of the right top of the two material boxes (4092) are provided with slots (4093).
5. The device according to claim 1, wherein: The bottom inner side of the screen box (1) is fixedly connected with triangular inclined blocks (5) on both the left and right sides, and the bottom inner side of the screen box (1) is connected to a discharge pipe (6).
6. The device according to claim 1, wherein: Damping rods (7) are fixedly connected to the four corners of the bottom of the sieve box (1), and shock-absorbing springs (8) are slidably connected to the outer side of the multiple damping rods (7). The bottom of the multiple damping rods (7) is fixedly connected to the same bracket (9).
7. The device according to claim 3, wherein: The bottom of the conveying pipe (303) is connected to the top of the screen box (1), and the bottom of the fan (3062) passes through the top left side of the screen box (1) and is fixedly connected to the top of the dust collection hood (3061).
8. The rapid sieving device for choline tablet powder according to claim 4, characterized in that: The outer middle parts of the two front positioning posts (4091) are slidably connected to the inner sides of the two front slots (4093), and the outer middle parts of the two rear positioning posts (4091) are slidably connected to the inner sides of the two rear slots (4093).