A grading and screening device for traditional Chinese medicine pills

Abstract

This invention relates to a grading and screening device for traditional Chinese medicine pills, comprising a frame configured as a support device. The device further includes: a screening assembly connected to the frame to control the screening conditions of the material, comprising a first screening disc, a second screening disc, and a collection chamber arranged vertically; and a drive assembly configured to cooperate with the screening assembly to achieve material screening, comprising a power unit and a processing unit that cooperate with each other, the processing unit acting on the first screening disc and the second screening disc respectively. This invention achieves pill particle size grading through two-stage screening discs arranged vertically, and uses the drive assembly to independently process the pills in the two screening discs, effectively avoiding pill accumulation and sieve clogging, improving screening efficiency and accuracy, and reducing pill breakage. Simultaneously, the collection chamber automatically separates qualified and unqualified products, eliminating the need for manual disassembly and cleaning, making operation convenient and the structure simple.

Description

Technical Field

[0001] This invention relates to the field of traditional Chinese medicine preparation processing equipment, and in particular to a grading and screening device for traditional Chinese medicine pills. Background Technology

[0002] In the production and research and development of traditional Chinese medicine pills, the particle size uniformity is a key indicator for measuring product quality. It is necessary to screen pills with particle sizes within a specified range and discard those that are too large or too small. Currently, commonly used pill screening equipment is mostly a simple single-layer or double-layer screen structure, and screening is completed solely by manual shaking, which has many drawbacks:

[0003] (i) The design of the aperture difference of the double-layer screen is not clear enough, which can easily lead to the problem of unclear particle size definition, resulting in a large deviation in the particle size range of the screened pills;

[0004] (ii) The screen is not equipped with an independent shaking and stirring device, and the pills are easy to accumulate on the screen surface and block the screen holes, which not only results in low screening efficiency, but also easily causes the pills to break.

[0005] (iii) Only the lower screen has a collection structure. The large pills on the upper screen lack a dedicated flow guide and removal structure. The screen needs to be manually disassembled for cleaning, which is cumbersome and easily contaminates the pills.

[0006] (iv) Traditional devices use an integral shaking method, and the shaking frequency and amplitude of the two layers of screens are the same. They cannot be adjusted according to the compatibility between the pills and the screens, which further affects the screening accuracy and efficiency.

[0007] While there are existing automated pill screening devices, they are complex in structure and have high manufacturing costs, making it difficult to meet the needs of small-batch research and development in laboratories and production in small and medium-sized pharmaceutical companies. Meanwhile, simple screening devices cannot solve the problems of screening accuracy, efficiency and ease of operation mentioned above. Summary of the Invention

[0008] In view of the shortcomings of the prior art, the purpose of this invention is to provide a traditional Chinese medicine pill grading and screening device to solve one or more problems in the prior art.

[0009] To achieve the above objectives, the technical solution of the present invention is as follows:

[0010] A traditional Chinese medicine pill grading and screening device includes a frame configured as a support device, and the device further includes:

[0011] A screening assembly, configured to be connected to the frame to control the screening conditions of the material, includes a first screening disc, a second screening disc, and a collection bin arranged vertically.

[0012] A drive assembly, configured to cooperate with the screening assembly to achieve material screening, includes a power unit and a processing unit that cooperate with each other, wherein the processing unit acts on the first screen plate and the second screen plate respectively.

[0013] Furthermore, the first screen plate also has a first discharge port, and the second screen plate also has a second discharge port.

[0014] Furthermore, the first sieve plate and the second sieve plate are concentrically arranged along the first direction, and the area of ​​the second sieve plate is not less than the area of ​​the first sieve plate.

[0015] Furthermore, the first screen plate is provided with a first screen mesh, and the second screen plate is provided with a second screen mesh, wherein the diameter of the first screen mesh is larger than the diameter of the second screen mesh.

[0016] Furthermore, the collection bin is connected to the second screen plate and the cross-section of the collection bin decreases along the first direction; the collection bin also has a third discharge port.

[0017] Furthermore, the power unit includes a motor and a stirring shaft, the motor being disposed on the frame, and the stirring shaft being rotatably coupled to the motor.

[0018] Furthermore, the stirring shaft is arranged along the first direction and passes through the first sieve plate and the second sieve plate.

[0019] Furthermore, the stirring shaft, the first sieve disk, and the second sieve disk are collinear along the center of the first direction.

[0020] Furthermore, the processing unit includes a rotating rod, which is fixedly connected to the stirring shaft.

[0021] Furthermore, the processing unit also includes a combing component, which is respectively disposed at both ends of the rotating rod and acts on the first screen and the second screen.

[0022] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0023] (i) This application achieves the definition of pills by setting a first screen and a second screen with different mesh sizes, thereby significantly improving the accuracy and consistency of particle size classification.

[0024] (ii) This application sets up a drive assembly, including a motor, a stirring shaft and a rotating rod fixed to the stirring shaft, and sets combing parts at both ends of the rotating rod to act on the screen, so that the combing parts can stir and flatten the pills on the screen, prevent accumulation, and effectively clean the pills blocked in the screen holes, thereby improving screening efficiency and reducing the risk of pill breakage.

[0025] (iii) This application has a first discharge port on the first screen plate, a second discharge port on the second screen plate, and a third discharge port at the bottom of the collection bin, which realizes automatic diversion and independent discharge of the pills without the need for manual disassembly of the screens, simplifies the operation process, and reduces the risk of pill contamination.

[0026] (iv) This application sets up a stirring shaft and rotating rod structure in the drive assembly, and realizes the separate stirring and combing of the pellets in the two layers of screens by rotating the combing component, rather than relying on the overall shaking. This allows the material movement state on the screen to be independently controlled according to the actual screening needs, thereby improving the screening accuracy and process adaptability. Attached Figure Description

[0027] Figure 1 A schematic diagram of a traditional Chinese medicine pill grading and screening device according to an embodiment of the present invention is shown.

[0028] The attached diagram is labeled as follows: 1. Frame; 2. Screening assembly; 21. First screen plate; 211. First discharge port; 212. First screen; 22. Second screen plate; 221. Second discharge port; 222. Second screen; 23. Collection bin; 231. Third discharge port; 3. Drive assembly; 31. Power unit; 311. Motor; 312. Stirring shaft; 32. Processing unit; 321. Rotating rod; 322. Combing component. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the following detailed description of a traditional Chinese medicine pill grading and screening device proposed by this invention, in conjunction with the accompanying drawings and specific embodiments, will provide further clarity. The advantages and features of this invention will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the purpose of the embodiments of this invention. Please refer to the accompanying drawings to make the objectives, features, and advantages of this invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the efficacy and objectives achieved by this invention, should still fall within the scope of the technical content disclosed in this invention.

[0030] Please refer to the following: Figure 1The herbal pill grading and screening device of this embodiment includes a frame 1, which is configured as a support device to ensure the overall structural stability of the device while facilitating actual operation. The device also includes a screening assembly 2, which is configured and connected to the frame 1 to control the screening conditions of the material. This assembly includes a first screening disc 21, a second screening disc 22, and a collection chamber 23, arranged vertically. Preferably, the first screening disc 21 and the second screening disc 22 have a circular disc structure with upward-folded edges to form retaining walls, preventing pills from falling off the sides during screening. In this embodiment, the first screening disc 21 is located directly above the second screening disc 22, with a distance maintained between them for easy observation and maintenance.

[0031] Furthermore, the first sieve disc 21 is provided with a first screen 212, and the second sieve disc 22 is provided with a second screen 222. The mesh diameter of the first screen 212 is larger than that of the second screen 222. The specific mesh diameter can be selected and replaced according to the target particle size range of the pills to be screened. The first sieve disc 21 also has a first discharge port 211 for collecting oversized pills that remain in the first sieve disc 21 after being screened by the first screen 212. The second sieve disc 22 also has a second discharge port 221 for collecting qualified pills that remain in the second sieve disc 22 after being screened by the second screen 222.

[0032] Furthermore, the first sieve disc 21 and the second sieve disc 22 are concentrically arranged along a first direction, and the area of ​​the second sieve disc 22 is not less than the area of ​​the first sieve disc 21, ensuring that all the pills sieved from the first sieve disc 21 can fall into the second sieve disc 22, avoiding material loss. In this embodiment, the first direction is a vertical direction, that is, a direction perpendicular to the end faces of the first sieve disc 21 and the second sieve disc 22.

[0033] Furthermore, the collection chamber 23 is connected below the second sieve disc 22, and its top is sealed to the bottom edge of the second sieve disc 22. The collection chamber 23 has an overall inverted conical structure with a cross-section that decreases along the first direction, which is beneficial for the concentration and falling of materials. A third discharge port 231 is also provided at the bottom of the collection chamber 23 for collecting undersized, substandard pills that have passed through the second sieve 222.

[0034] The device further includes a drive assembly 3, which is configured to cooperate with the screening assembly 2 to achieve material screening. The drive assembly 3 includes a power unit 31 and a processing unit 32 that cooperate with each other. The processing unit 32 acts on the first screening disc 21 and the second screening disc 22, respectively. The power unit 31 includes a motor 311 and a stirring shaft 312. The motor 311 is disposed on the top of the frame 1 and fixedly connected to the frame 1 via a motor mounting bracket. The stirring shaft 312 is rotatably coupled to the output shaft of the motor 311, and the two can be rigidly connected via a coupling.

[0035] Furthermore, the stirring shaft 312 is arranged along the first direction and passes through the first sieve plate 21 and the second sieve plate 22. Preferably, a bearing or bushing is provided at the connection between the stirring shaft 312 and the first sieve plate 21 and the second sieve plate 22 to ensure the stability of the stirring shaft 312 during rotation while reducing frictional resistance. The stirring shaft 312, the first sieve plate 21, and the second sieve plate 22 are collinear along the center of the first direction, that is, their central axes coincide, so that the processing unit 32 can act evenly on the entire surface of the first sieve 212 and the second sieve plate 222 during rotation.

[0036] Furthermore, the processing unit 32 includes a rotating rod 321, which is radially fixed to the stirring shaft 312. In this embodiment, two sets of rotating rods 321 are provided, located above the screens of the first screen 21 and the second screen 22, respectively. Each set of rotating rods 321 is evenly distributed circumferentially along the stirring shaft 312 to improve the stirring and combing effect on the pills. The processing unit 32 also includes combing members 322, which are respectively disposed at both ends of the rotating rod 321 and act on the first screen 212 and the second screen 222. The combing component 322 is preferably made of a soft and elastic material. Its bottom is in slight contact with the surfaces of the first screen 212 and the second screen 222. When the rotating rod 321 rotates with the stirring shaft 312, the combing component 322 can stir and flatten the pills on the first screen 212 and the second screen 222 to prevent the pills from accumulating and can effectively clean the pills that are blocked in the screen holes to ensure that the screen holes are unobstructed.

[0037] Specifically, the combing element 322 located within the first sieve tray 21 rotates with the rotating rod 321, dispersing the pellets fed into the first sieve tray 21 in all directions. Pellets with a particle size smaller than the mesh size of the first sieve 212 fall into the second sieve tray 22, while pellets with an excessively large particle size gradually move towards the edge of the first sieve tray 21 under the push of the combing element 322 and are eventually discharged from the first discharge port 211. Similarly, pellets falling into the second sieve tray 22, under the action of the combing element 322 inside, have their particle size smaller than the mesh size of the second sieve 222 pass through the sieve and fall into the collection bin 23, and are discharged through the third discharge port 231. Qualified pellets are combed to the second discharge port 221 and discharged. Through the setting of the drive component 3, automated stirring and combing of the pellets in the two sieve trays are realized, effectively improving screening efficiency and sieve utilization, and reducing pellet breakage.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A grading and screening device for traditional Chinese medicine pills, comprising a frame (1), said frame (1) being configured as a support device, characterized in that, The device further includes: The screening assembly (2) is configured to be connected to the frame (1) to control the screening conditions of the material, including a first screening plate (21), a second screening plate (22) and a collection bin (23) arranged vertically. The drive assembly (3) is configured to cooperate with the screening assembly (2) to screen materials, including a power unit (31) and a processing unit (32) that cooperate with each other. The processing unit (32) acts on the first screen plate (21) and the second screen plate (22) respectively.

2. The traditional Chinese medicine pill grading and screening device as described in claim 1, characterized in that: The first screen plate (21) also has a first discharge port (211), and the second screen plate (22) also has a second discharge port (221).

3. The traditional Chinese medicine pill grading and screening device as described in claim 2, characterized in that: The first sieve plate (21) and the second sieve plate (22) are concentrically arranged along the first direction and the area of ​​the second sieve plate (22) is not less than the area of ​​the first sieve plate (21).

4. The traditional Chinese medicine pill grading and screening device as described in claim 3, characterized in that: The first sieve plate (21) is provided with a first sieve (212), and the second sieve plate (22) is provided with a second sieve (222). The diameter of the first sieve (212) is larger than that of the second sieve (222).

5. The traditional Chinese medicine pill grading and screening device as described in claim 4, characterized in that: The collection bin (23) is connected to the second screen plate (22) and the cross section of the collection bin (23) decreases along the first direction; the collection bin (23) also has a third discharge port (231).

6. The traditional Chinese medicine pill grading and screening device as described in claim 5, characterized in that: The power unit (31) includes a motor (311) and a stirring shaft (312). The motor (311) is disposed on the frame (1), and the stirring shaft (312) is rotatably coupled to the motor (311).

7. The traditional Chinese medicine pill grading and screening device as described in claim 6, characterized in that: The stirring shaft (312) is arranged along the first direction and passes through the first sieve plate (21) and the second sieve plate (22).

8. The traditional Chinese medicine pill grading and screening device as described in claim 7, characterized in that: The stirring shaft (312), the first sieve plate (21), and the second sieve plate (22) are collinear along the center of the first direction.

9. The traditional Chinese medicine pill grading and screening device as described in claim 8, characterized in that: The processing unit (32) includes a rotating rod (321) which is fixed to the stirring shaft (312).

10. The traditional Chinese medicine pill grading and screening device as described in claim 9, characterized in that: The processing unit (32) further includes a combing component (322), which is disposed at both ends of the rotating rod (321) and acts on the first screen (212) and the second screen (222).

Images