A simple screening device for Chinese medicine pills
By designing a simple combination structure of screening disc and material tray, and utilizing the difference in the rolling speed of pills for screening, the problems of complexity and high cost of existing equipment are solved, and low-cost small-batch pill screening is realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN DONGJI HEALTH MANAGEMENT CONSULTING CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-05-26
AI Technical Summary
Existing pill screening equipment is complex in structure and expensive, making it difficult to meet the small-batch needs of traditional Chinese medicine pharmacies.
A simple screening device including a screening disc, a first material disc, and a second material disc was designed. The screening is achieved by utilizing the conical surface and slit design of the screening disc and the difference in the rolling speed of the pills. The pills are sorted by a combination of a discharge funnel and a stepped shaft.
It achieves low-cost, simple, and suitable screening of small batches of pills, meeting the screening needs of pharmacies.
Smart Images
Figure CN224272111U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pharmaceutical equipment, specifically a simple screening device for traditional Chinese medicine pills. Background Technology
[0002] Pills are a common form of traditional Chinese medicine. After pill making, they need to be screened to remove defective pills with poor shape. Patent application CN202510239564.9 discloses a pill detection and sorting device. In use, pills are fed into a hopper, and a lifting mechanism drives a lifting column to descend to its lowest point and then rise. Since the two portal-shaped rods at the top of each lifting column are suitable for supporting a single pill together, the lifting mechanism ultimately lifts a pill to its highest point for visual inspection by an overhead camera, determining whether the pill is good or defective. This type of equipment is complex in structure, large in size, technologically advanced, and expensive. It is suitable for large-scale production in factories. For small-batch needs in traditional Chinese medicine pharmacies and clinics, this type of equipment is not cost-effective. A simpler pill sorting device is needed to meet the needs of lower-tier markets. Summary of the Invention
[0003] This invention provides a simple screening device for Chinese medicine pills, aiming to solve the problem of the lack of low-cost pill selection equipment.
[0004] The technical solution includes a screening disc, a first material disc, and a second material disc. The upper surface of the screening disc is a conical surface with a higher inner surface and a lower outer surface. Both the first and second material discs are disc-shaped. The first material disc is located below the screening disc, and the opening of the first material disc is lower than the outer edge of the screening disc. The inner diameter of the opening of the first material disc is larger than the diameter of the screening disc. An annular gap is formed between the outer edge of the screening disc and the opening of the first material disc. The second material disc is located below the first material disc, and the diameter of the opening of the second material disc is larger than the diameter of the opening of the first material disc.
[0005] It also includes a discharge hopper, which is located above the screening disc and coaxial with the screening disc.
[0006] The angle between the generatrix of the upper surface of the screening disc and the water surface line is not less than 3 degrees and not more than 5 degrees.
[0007] The first material tray is provided with a first material pipe at its bottom, and the second material tray is provided with a second material pipe at its bottom.
[0008] It also includes a multi-segment stepped shaft, with the material discharge hopper, screening disc, first material disc and second material disc sequentially arranged on the stepped shaft from top to bottom, and each bearing the load of the stepped surface of the stepped shaft.
[0009] This invention has a simple structure, small size, low cost, and is easy to use, making it suitable for pharmacies' needs for selecting small batches of pills. Attached Figure Description
[0010] Figure 1 This is the front view of the present invention.
[0011] Figure 2 This is a top view of the present invention.
[0012] Figure 3 This is a perspective view of the present invention.
[0013] Figure 4 This is a cross-sectional view of the present invention. Detailed Implementation
[0014] Referring to the accompanying drawings, this utility model includes a sieving disc 1, a first material disc 2, and a second material disc 3. The upper surface of the sieving disc 1 is a conical surface with a higher inner surface and a lower outer surface. Both the first material disc 2 and the second material disc 3 are disc-shaped. The first material disc 2 is located below the sieving disc 1, and the opening of the first material disc 2 is lower than the outer edge of the sieving disc 1. The inner diameter of the opening of the first material disc 2 is larger than the diameter of the sieving disc 1. An annular gap 4 is formed between the outer edge of the sieving disc 1 and the opening of the first material disc 2. When the pills roll off the sieving disc 1, the pills with good roundness roll at a faster speed and their parabolic trajectory when rolling off the outer edge of the sieving disc 1 is farther, allowing them to pass through the gap 4. However, the pills with poor roundness roll at a slower speed due to greater rolling resistance and their parabolic trajectory when rolling off the outer edge of the sieving disc 1 is shorter, making it impossible for them to pass through the gap 4. Therefore, they will fall into the first material disc 2 through the gap 4.
[0015] The second tray 3 is located below the first tray 2, and the diameter of the opening of the second tray 3 is larger than that of the opening of the first tray 2. The round pills fall into the second tray 3 after passing through the gap 4.
[0016] It also includes a discharge hopper 5, which is located above the screening plate 1 and coaxial with the screening plate 1. The pills to be screened are poured into the discharge hopper 5, fall from the lower end of the discharge hopper 5 to the central area of the screening plate 1, and then roll downwards along the plate surface of the screening plate 1.
[0017] The angle between the generatrix of the upper surface of the screening disc 1 and the water surface line is not less than 3 degrees and not more than 5 degrees. This inclination can enable pills with good roundness to obtain a larger speed, while avoiding pills with poor roundness from obtaining a larger speed, thus having good screening performance.
[0018] The first material tray 2 is provided with a first material pipe 6 at the bottom, and the second material tray 3 is provided with a second material pipe 7 at the bottom, for discharging the pills in the material tray.
[0019] It also includes a multi-segment stepped shaft 8, with the material discharge hopper 5, screening disc 1, first material disc 2 and second material disc 3 sequentially arranged on the stepped shaft 8 from top to bottom, and each of the stepped surfaces of the stepped shaft 8 bearing the load.
[0020] In use, the pills to be screened are poured into the feeding funnel 5 and then fall from the lower end of the feeding funnel 5 into the central area of the screening disc 1. Under the action of gravity, the pills roll outward along the conical surface of the screening disc 1. Pills with good roundness roll at a fast speed and their parabolic trajectory when rolling from the outer edge of the screening disc 1 is farther, allowing them to pass through the gap 4 and fall into the second material disc 3. However, pills with poor roundness have greater rolling resistance and roll at a slower speed. Their parabolic trajectory when rolling from the outer edge of the screening disc 1 is shorter, and they cannot pass through the gap 4. Therefore, they fall into the first material disc 2 through the gap 4, thus achieving the screening of the pills.
[0021] When feeding the material into the feeding hopper 5, an intermittent feeding method is adopted. After all the previous batch of pills has rolled off the screening plate 1, the next batch of pills is fed in. This can prevent the later pills with good roundness from hitting the pills with poor roundness that are still on the screening plate 1 due to their faster rolling speed, thus avoiding affecting the rolling speed of the pills.
[0022] As the pills from the same batch roll downwards, the space on the tray becomes larger, and the pills become more dispersed, thus the probability of collisions between pills is very small.
[0023] This invention has a simple structure, small size, low cost, and is easy to use, making it suitable for pharmacies' needs for selecting small batches of pills.
Claims
1. A simple screening device for traditional Chinese medicine pills, comprising a screening disc (1), a first tray (2) and a second tray (3), characterized in that, The upper surface of the screening disc (1) is a conical surface with a higher inner surface and a lower outer surface. The first material disc (2) and the second material disc (3) are both disc-shaped. The first material disc (2) is located below the screening disc (1). The opening of the first material disc (2) is lower than the outer edge of the screening disc (1), and the inner diameter of the opening of the first material disc (2) is greater than the diameter of the screening disc (1). An annular gap (4) is formed between the outer edge of the screening disc (1) and the opening of the first material disc (2). The second material disc (3) is located below the first material disc (2), and the diameter of the opening of the second material disc (3) is greater than the diameter of the opening of the first material disc (2).
2. The simplified screening device for traditional Chinese medicine pills according to claim 1, characterized in that, It also includes a discharge hopper (5), which is located above the screening plate (1) and coaxial with the screening plate (1).
3. The simplified screening device for traditional Chinese medicine pills according to claim 1, characterized in that, The angle between the generatrix of the upper surface of the screening disc (1) and the water surface line is not less than 3 degrees and not more than 5 degrees.
4. The simplified screening device for traditional Chinese medicine pills according to claim 1, characterized in that, The first material tray (2) is provided with a first material tube (6) at the bottom, and the second material tray (3) is provided with a second material tube (7) at the bottom.
5. A simple screening device for traditional Chinese medicine pills according to claim 2, characterized in that, It also includes a multi-segment stepped shaft (8), a material discharge hopper (5), a screening disc (1), a first material disc (2) and a second material disc (3) are sequentially arranged on the stepped shaft (8) from top to bottom, and are supported by each step surface of the stepped shaft (8).