An automatic waste pill collection device for the production of traditional Chinese medicine pills

Abstract

An automatic waste pill collection device for the production of traditional Chinese medicine pills includes a screening vessel with a first screening hole, a second screening hole, and a third screening hole. The diameters of the first, second, and third screening holes increase sequentially and are arranged from left to right. Mounting brackets are fixed on both sides of the screening vessel, and a transmission screw is fixed between the mounting brackets. The transmission screw is driven by a motor, and two conveying plates are threaded onto the transmission screw. Limiting rods are fixed to the mounting brackets on the opposite side of the transmission screw, and the conveying plates slide on the limiting rods. Because this invention adds conveying plates inside the screening vessel cavity, forming an adjustable retention area, the residence time of the traditional Chinese medicine pills on the predetermined sieve surface is changed from "gravity flow" to "timed screening," thus allowing critical particle size pills to have sufficient screening opportunities. This effectively eliminates the screening defects caused by insufficient screening time in traditional gravity sieves, significantly improving sorting accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of blister pack feeding, specifically to an automatic waste pill collection device for the production of traditional Chinese medicine pills. Background Technology

[0002] Traditional Chinese medicine (TCM) is the culmination of thousands of years of medical wisdom of the Chinese nation. Its unique theoretical system permeates the entire process of medicinal material collection, processing, preparation, and clinical application. TCM pills, as one of the traditional dosage forms, have a long history. As early as the Eastern Han Dynasty, Zhang Zhongjing's *Essential Prescriptions of the Golden Chamber* contained detailed records of pills. Pills are characterized by sustained-release and long-lasting effects, and convenient administration, making them particularly suitable for the long-term treatment of chronic diseases. However, in the modern production process of TCM pills, due to the complexity of the process, various stages such as molding, pill preparation, drying, pill selection, and coating can generate waste pills.

[0003] According to Chinese Patent No. CN221657144U, a screening device is disclosed, including a screening box and a bottom shell. The screening box is installed on the upper part of the bottom shell, and the lower end of the bottom shell is provided with bottom support feet. A rolling collection box is provided inside the bottom shell, and a screening screen is provided inside the screening box. The screening box and the screening screen are fixedly connected by positioning bolts. A discharge collection hood is provided at the rear end of the screening box. This utility model's automatic swing screening mechanism is pushed from front to back, so that the Chinese medicine pills are screened on the screening screen from front to back. Unscreened Chinese medicine pills can be directly pushed to the discharge collection hood for centralized collection, which makes collection more convenient. Screened Chinese medicine pills fall into the rolling collection box inside the bottom shell for collection, thus collecting materials from both sides, making collection more efficient and convenient.

[0004] However, in the use of existing Chinese medicine pill collection devices, the current Chinese medicine pill collection devices generally rely on the principle of gravity sieving. Their separation efficiency is limited by fixed aperture and limited opening rate: when the waste pill particle size is close to the critical value of the sieve aperture or instantaneous stacking occurs, it is easy to form a "bridging" effect, causing blind spots in sieving and resulting in low sieving accuracy of the device. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the problem that existing Chinese medicine pill collection devices generally rely on the principle of gravity sieving during use, and their separation efficiency is limited by fixed aperture and limited opening rate: when the waste pill particle size is close to the critical value of the sieve aperture or instantaneous stacking occurs, it is easy to form a "bridging" effect, causing blind spots in sieving and resulting in low sieving accuracy of the device.

[0006] The technical solution adopted to solve the above technical problems is: An automatic waste pill collection device for the production of traditional Chinese medicine pills includes a screening vessel with a first screening hole, a second screening hole, and a third screening hole. The diameters of the first, second, and third screening holes increase sequentially and are arranged from left to right. Mounting brackets are fixed on both sides of the screening vessel, and a transmission screw is fixed between the mounting brackets. The transmission screw is driven by a motor, and two conveying plates are threaded onto the transmission screw. A limit rod is fixed on the opposite side of the mounting brackets to the transmission screw, and the conveying plates slide on the limit rod. The three screening holes with increasing diameters are arranged axially in a three-stage "small to large" step screening. The transmission screw drives the two conveying plates to move, pushing the waste pills segment by segment to achieve continuous classification—small waste pills, qualified pills, and oversized waste pills fall into the first, second, and third screening holes, respectively.

[0007] As a preferred technical solution of this utility model, the screening areas of the first screening hole, the second screening hole, and the third screening hole are the same, the spacing of the conveying plates is the same as the screening areas of the first screening hole, the second screening hole, and the third screening hole, and the spacing of the conveying plates is equal to the width of each screening area, ensuring that the pushing area completely covers the corresponding aperture band without any dead corners; at the same time, a dynamic "small bin" is formed between the two plates, so that the material stays in the screening area for a consistent time.

[0008] As a preferred technical solution of this utility model, a cleaning brush is fixed on the outer side of the conveyor plate. The cleaning brush contacts the inner wall of the screening vessel. The outer edge of the conveyor plate has a built-in cleaning brush, which automatically sweeps the inner wall of the screening vessel during reciprocating motion to prevent the powder from adhering and clumping. The brush makes instantaneous contact with the screening hole, which can clear the blocked hole, maintain a stable feed rate, and reduce the number of times the machine is stopped for manual cleaning.

[0009] As a preferred embodiment of this utility model, the mounting bracket has rotating rods fixed on both sides, the rotating rods are rotatably connected to the rotating bracket, the rotating rods are driven by a motor, and a control panel is fixed on the side of the rotating bracket.

[0010] As a preferred embodiment of this utility model, a control panel is fixed to the side of the rotating bracket, and a mounting base is fixed to the lower side of the mounting bracket. The mounting base has three collection holes, which are located below the first screening hole, the second screening hole, and the third screening hole, respectively.

[0011] As a preferred technical solution of this utility model, a buffer plate is fixed inside the collection hole, and a collection box is slidably connected to the bottom of the collection hole. The buffer plate is located on the upper side of the collection box. The buffer plate adopts an inclined stepped structure, and the falling speed of the waste pellets is gradually reduced, thereby reducing the pellet breakage rate.

[0012] The beneficial effects of this utility model are as follows:

[0013] Because this invention adds a conveying plate inside the screening vessel cavity to form an adjustable retention area, the residence time of Chinese medicine pills on the predetermined sieve surface is changed from "gravity flow" to "timed screening", thereby allowing critical particle size pills to have sufficient screening opportunities, effectively eliminating the screening defects caused by insufficient screening time in traditional gravity sieves, and significantly improving the sorting accuracy. Attached Figure Description

[0014] Figure 1 This is the first axial view of the present invention; Figure 2 for Figure 1 A magnified view of part A; Figure 3 This is the second axial view of the present invention; Figure 4 This is the third axial view of the present invention.

[0015] In the diagram: 1. Screening vessel; 2. First screening hole; 3. Second screening hole; 4. Third screening hole; 6. Mounting bracket; 7. Conveyor plate; 8. Limiting rod; 9. Transmission screw; 10. Cleaning brush; 11. Rotating rod; 12. Rotating bracket; 13. Control panel; 14. Mounting base; 15. Collection hole; 16. Buffer plate; 17. Collection box. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable. Example 1

[0021] exist Figure 1-4 This utility model provides a technical solution: an automatic waste pill collection device for the production of traditional Chinese medicine pills, including a screening vessel 1. The screening vessel 1 has a first screening hole 2, a second screening hole 3, and a third screening hole 4, with the diameters of the first screening hole 2, the second screening hole 3, and the third screening hole 4 increasing sequentially. The first screening hole 2, the second screening hole 3, and the third screening hole 4 are arranged from left to right. Mounting brackets 6 are fixed on both sides of the screening vessel 1, and a transmission screw 9 is fixed between the mounting brackets 6. The transmission screw 9 is driven by a motor, and two conveying plates 7 are threadedly connected to the transmission screw 9. The mounting brackets 6 are fixed on the opposite side of the transmission screw 9, and the conveying plates 7 slide on the limit rods 8. The motor drives the transmission screw 9 to rotate, and the two conveying plates 7 move to the right along the limit rods 8 under the influence of the threaded movement, pushing the traditional Chinese medicine pills in the screening vessel 1 sequentially to the first screening hole 2, the second screening hole 3, and the third screening hole 4 with increasing diameters, thereby achieving graded screening. Waste pills that are too small are preferentially discharged through the small holes, while qualified pills and waste pills that are too large are sequentially transferred to the larger holes in the later section, completing continuous grading.

[0022] In one aspect of this embodiment, the screening areas of the first screening hole 2, the second screening hole 3, and the third screening hole 4 are the same. The spacing of the conveyor plates 7 is the same as the screening areas of the first screening hole 2, the second screening hole 3, and the third screening hole 4. A cleaning brush 10 is fixed on the outside of the conveyor plates 7. The cleaning brush 10 contacts the inner wall of the screening vessel 1. The spacing of the conveyor plates 7 is equal to the width of the screening hole area to ensure that each push covers the entire screening surface. During the movement, the cleaning brush 10 brushes the inner wall of the screening vessel 1 in real time to prevent the pill powder from adhering and clogging the sieve holes, and to maintain screening efficiency and accuracy.

[0023] In one aspect of this embodiment, rotating rods 11 are fixed on both sides of the mounting bracket 6. The rotating rods 11 are rotatably connected to the rotating bracket 12. The rotating rods 11 are driven by a motor. A control panel 13 is fixed on the side of the rotating bracket 12. A mounting base 14 is fixed on the lower side of the mounting bracket 6. The mounting base 14 has three collection holes 15. The collection holes 15 are located below the first screening hole 2, the second screening hole 3, and the third screening hole 4, respectively. A buffer plate 16 is fixed inside the collection hole 15. A collection box 17 is slidably connected to the bottom of the collection hole 15. The buffer plate 16 is located on the upper side of the collection box 17. The motor drives the rotating rods 11 to make the screening vessel 1 rotate around the rotating bracket 12. Various pellets fall through the corresponding collection holes 15, first fall on the buffer plate 16 to slow down, and then fall into the pull-out collection box 17 to achieve classified collection and buffering to prevent breakage. The waste pellets can be automatically removed by pulling out the collection box 17.

[0024] The working principle of this utility model is as follows: The user controls the motor to drive the rotating rod 11 through the control panel 13, so that the entire screening vessel 1 rotates on the rotating support 12. At the same time, the transmission screw 9 is driven to rotate, and the two conveying plates 7 move to the right along the limiting rod 8, pushing the Chinese medicine pills to the first screening hole 2, the second screening hole 3, and the third screening hole 4 with increasing apertures in sequence, so as to complete the continuous grading of undersized waste pills, qualified pills and oversized waste pills; the cleaning brush 10 on the outside of the conveying plate 7 brushes the inner wall of the screening vessel 1 in real time to prevent powder from clogging the screen holes and ensure screening efficiency; the various types of pills after grading fall through the corresponding collection hole 15, first hit the buffer plate 16 to slow down, and then fall into the pull-out collection box 17. Pulling out the collection box 17 can complete the automatic removal of waste pills.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A traditional Chinese medicine pill production waste pill automatic collection device, comprising a screening kettle (1), characterized in that: The screening kettle (1) is provided with a first screening hole (2), a second screening hole (3) and a third screening hole (4), the hole diameters of the first screening hole (2), the second screening hole (3) and the third screening hole (4) increase in sequence, the first screening hole (2), the second screening hole (3) and the third screening hole (4) are arranged from left to right, the screening kettle (1) is fixed with mounting brackets (6) on both sides, the mounting brackets (6) are fixed with a transmission screw (9) between them, the transmission screw (9) is driven by a motor, the transmission screw (9) is threadedly connected with two conveying plates (7), the mounting bracket (6) is fixed with a limiting rod (8) on the opposite side of the transmission screw (9), and the conveying plate (7) slides on the limiting rod (8). ​ 2. The automatic waste pill collecting device for traditional Chinese medicine pill production according to claim 1, characterized in that: The screening areas of the first screening hole (2), the second screening hole (3) and the third screening hole (4) are the same, and the spacing of the conveying plate (7) is the same as the screening area of the first screening hole (2), the second screening hole (3) and the third screening hole (4).

3. The automatic waste pill collecting device for traditional Chinese medicine pill production according to claim 2, characterized in that: The conveying plate (7) is fixed with a cleaning brush (10) on the outer side, and the cleaning brush (10) is in contact with the inner wall of the screening kettle (1).

4. The automatic waste pill collecting device for traditional Chinese medicine pill production according to claim 1, characterized in that: The mounting bracket (6) is fixed with a rotating rod (11) on both sides, the rotating rod (11) is rotatably connected to a rotating bracket (12), the rotating rod (11) is driven by a motor, and the rotating bracket (12) is fixed with a control panel (13) on the side.

5. The automatic waste pill collecting device for traditional Chinese medicine pill production according to claim 4, characterized in that: The rotating bracket (12) is fixed with a control panel (13) on the side, the mounting bracket (6) is fixed with a mounting base (14) on the lower side, the mounting base (14) is provided with three collecting holes (15), and the collecting holes (15) are located below the first screening hole (2), the second screening hole (3) and the third screening hole (4) respectively.

6. The automatic waste pill collecting device for traditional Chinese medicine pill production according to claim 5, characterized in that: The collecting hole (15) is fixed with a buffer plate (16), the collecting hole (15) is slidably connected with a collecting box (17) at the bottom, and the buffer plate (16) is located above the collecting box (17).

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