Medicament screening device

The drug screening device designed with a vibration motor and multi-layer screening plates solves the problems of high labor intensity and uneven screening in traditional drug screening, and realizes efficient and accurate drug grading screening.

CN223324974UActive Publication Date: 2025-09-12THE SIXTH MEDICAL CENT OF THE CHINESE PEOPLES LIBERATION ARMY GENERAL HOSPITAL
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202422670736.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-04
Publication Date
2025-09-12
Estimated Expiration
2034-11-04

AI Technical Summary

Technical Problem

Traditional drug screening methods are labor-intensive and easily affected by human factors. Existing mechanical equipment is prone to blockage and uneven screening, making it difficult to meet the efficient and precise requirements of drug production and research and development.

Method used

The screening box adopts a vibration motor and vibration spring, combined with a multi-layer sieve plate and a screen design with different mesh diameters. The vibration and tilt angle design ensures uniform flow and graded screening of the medicine.

Benefits of technology

It improves the efficiency, accuracy and stability of drug screening, reduces clogging, and meets the screening needs of different particle sizes.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223324974U_ABST
    Figure CN223324974U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of medicament screening, in particular to a medicament screening device which comprises an anti-skid layer, the upper end of the anti-skid layer is fixedly connected with a bottom plate, the four corners of the upper end of the bottom plate are fixedly connected with supporting columns, and the upper ends of the four supporting columns are jointly and fixedly connected with a vibration device. The right portion of the upper end of the vibration device is fixedly connected with a feeding box, and the interior of the vibration device is fixedly connected with a screening device. The vibration device comprises four vibration springs, two vibration motors are arranged at the right end of the connecting plate, and the four vibration springs are fixedly connected to the upper ends of the supporting columns correspondingly. According to the medicament screening device, the vibrating device is matched with the screening device, so that efficient grading and fine screening of medicaments are realized, the screening process is ensured to be stable and uniform, and the screening efficiency and precision are improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of drug screening, in particular to a drug screening device. Background Art

[0002] In the process of pharmaceutical production and research and development, accurate screening of pharmaceuticals is a key link in ensuring the quality and performance of pharmaceuticals. Traditional pharmaceutical screening uses some simple manual screening methods, which are not only labor-intensive but also easily affected by human factors, resulting in unstable screening results. At the same time, some existing mechanical screening equipment may experience pharmaceutical blockage, uneven screening, etc. during the screening process, affecting the screening effect. In addition, with the continuous increase in the number of pharmaceutical types and the increasingly stringent requirements on pharmaceutical particle size, there is an urgent need for an efficient, accurate and stable pharmaceutical screening device to meet the needs of pharmaceutical production and research and development. Therefore, we have introduced a pharmaceutical screening device. Utility Model Content

[0003] The main purpose of the present invention is to provide a drug screening device that can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A drug screening device, comprising an anti-slip layer, wherein the upper end of the anti-slip layer is fixedly connected to a bottom plate, the four corners of the upper end of the bottom plate are fixedly connected to support columns, the upper ends of the four support columns are commonly fixedly connected to a vibrating device, the upper right portion of the vibrating device is fixedly connected to a feed box, and a screening device is fixedly connected inside the vibrating device;

[0006] The vibration device includes a vibration spring, and four vibration springs are provided. The upper ends of the four vibration springs are fixedly connected to a screening box. A feed trough is provided on the right upper end of the screening box. A connecting plate is fixedly connected to the lower end of the screening box. Two vibration motors are provided on the right end of the connecting plate. The left end of the screening box is provided with a No. 1 chute, a No. 2 chute and a No. 3 chute from top to bottom, respectively. The four vibration springs are fixedly connected to the upper ends of the support columns.

[0007] Preferably, the sub-screening device includes a No. 1 sub-screen plate, a No. 2 sub-screen plate and a connecting assembly, the upper end of the No. 1 sub-screen plate and the upper end of the No. 2 sub-screen plate are both provided with a No. 1 drainage groove, the upper right part of the No. 1 sub-screen plate and the upper right part of the No. 2 sub-screen plate are both fixedly connected to the No. 1 screen, and a number of No. 1 partition plates are fixedly connected in the two No. 1 drainage grooves, the lower left part of the No. 1 sub-screen plate and the lower left part of the No. 2 sub-screen plate are both fixedly connected to a No. 1 discharge pipe, the connecting assembly is located directly below the No. 2 sub-screen plate, the No. 1 sub-screen plate is fixedly connected in the No. 1 chute, and the No. 2 sub-screen plate is fixedly connected in the No. 2 chute.

[0008] By adopting the above technical solution: several No. 1 partition plates are fixedly connected to the two No. 1 drainage troughs to guide the flow of the medicine on the screening plate, ensuring that the medicine can be evenly screened through the No. 1 screen, avoiding the accumulation of medicine in local areas, and improving the uniformity and accuracy of screening.

[0009] Preferably, the connecting assembly includes a No. 3 sub-screen plate, the lower left part of the No. 3 sub-screen plate is fixedly connected to the No. 2 discharge pipe, the upper end of the No. 3 sub-screen plate is provided with a No. 2 drainage trough, a number of No. 2 partition plates are fixedly connected in the No. 2 drainage trough, the upper right part of the No. 3 sub-screen plate is fixedly connected to the No. 2 screen, and the No. 3 sub-screen plate is fixedly connected in the No. 3 chute.

[0010] By adopting the above technical solution: it further plays a drainage role, making the medicine flow more smoothly. At the same time, the partition plate can evenly distribute the medicine in the drainage trough, preventing medicine accumulation and congestion, and improving screening efficiency.

[0011] Preferably, the No. 2 discharge pipe is connected to the interior of the No. 3 screening plate, and several No. 2 partition plates are distributed one by one at equal distances in the longitudinal direction.

[0012] By adopting the above technical solution: a number of No. 2 partition plates are distributed one by one at equal distances in the longitudinal direction, so that the flow of the medicine in the No. 2 drainage trough is more uniform, further improving the accuracy and efficiency of screening.

[0013] Preferably, the mesh diameter of the No. 1 screen on the upper side is larger than the mesh diameter of the No. 1 screen on the lower side, and the mesh diameter of the No. 1 screen on the lower side is larger than the mesh diameter of the No. 2 screen.

[0014] By adopting the above technical solution: through the size relationship of the mesh diameters of different sieves, the graded screening of medicines is achieved. The No. 1 sieve on the upper side first screens out the medicines with larger particles, the No. 1 sieve on the lower side further screens out the medicines with smaller particles, and finally the No. 2 sieve screens out the medicines with the smallest particles, thereby improving the accuracy and specificity of screening and meeting the screening needs of medicines with different particle sizes.

[0015] Preferably, the No. 1 chute, the No. 2 chute and the No. 3 chute are all inclined at an angle of twenty.

[0016] By adopting the above technical solution: the inclination angle helps the medicine to flow smoothly from one sub-screening plate to another under the action of gravity, reducing blockage during the screening process and improving screening efficiency.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the utility model, the cooperation of the vibration motor and the vibration spring makes the screening box generate stable vibration, ensuring that the medicine can fully flow and disperse during the screening process, avoiding the accumulation of medicine, and speeding up the screening process. At the same time, the design of the multi-layer screening plates and screens with different mesh diameters in the screening device can gradually screen out medicines of different particle sizes. The No. 1 chute, No. 2 chute and No. 3 chute on the screening box are all inclined at a twenty-degree angle, which provides a stable installation position for the screening device and helps the medicine to flow smoothly to each level of the screening device under the action of gravity, reducing the blockage phenomenon in the screening process and further improving the screening efficiency.

[0019] 2. In the present invention, the No. 1 drainage trough on the upper end of the No. 1 sub-screen plate and the No. 2 sub-screen plate and the No. 1 separator plates in the No. 1 drainage trough can guide the medicine to flow evenly, prevent the medicine from piling up, make the medicine more evenly distributed on the sub-screen plate, and improve the accuracy of screening. The No. 2 drainage trough and the No. 2 separator plates on the No. 3 sub-screen plate also play the same role, ensuring that the medicine flows evenly on the No. 3 sub-screen plate, further improving the stability and uniformity of screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a drug screening device of the present utility model;

[0021] Figure 2 This is a schematic diagram of the structure of a vibration device of a medicine screening device of the utility model;

[0022] Figure 3 This is a schematic structural diagram of a screening device of a medicine screening device of the present utility model;

[0023] Figure 4 This is a schematic diagram of the connection component structure of a drug screening device of the present invention.

[0024] In the figure: 1. Anti-slip layer; 2. Bottom plate; 3. Support column; 4. Vibration device; 5. Screening device; 6. Feed box; 41. Vibration motor; 42. Connecting plate; 43. Vibration spring; 44. Screening box; 45. Feed trough; 46. Chute No. 1; 47. Chute No. 2; 48. Chute No. 3; 51. Screen plate No. 1; 52. Screen plate No. 2; 53. Connecting assembly; 54. Drainage trough No. 1; 55. Screen No. 1; 56. Partition plate No. 1; 57. Discharge pipe No. 1; 531. Screen plate No. 3; 532. Discharge pipe No. 2; 533. Partition plate No. 2; 534. Screen No. 2; 535. Drainage trough No. 2. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] See also Figure 1-4 , the utility model provides a technical solution:

[0029] A drug screening device includes an anti-slip layer 1, the upper end of the anti-slip layer 1 is fixedly connected to a base plate 2, the four corners of the upper end of the base plate 2 are fixedly connected to support columns 3, the upper ends of the four support columns 3 are commonly fixedly connected to a vibration device 4, the upper right part of the vibration device 4 is fixedly connected to a feed box 6, and a screening device 5 is fixedly connected inside the vibration device 4.

[0030] In this embodiment, the vibration device 4 includes a vibration spring 43, and four vibration springs 43 are provided. The upper ends of the four vibration springs 43 are fixedly connected to a screening box 44. A feed trough 45 is provided on the right upper end of the screening box 44. The lower end of the screening box 44 is fixedly connected to a connecting plate 42. Two vibration motors 41 are provided on the right end of the connecting plate 42. The left end of the screening box 44 is provided with a No. 1 chute 46, a No. 2 chute 47 and a No. 3 chute 48 from top to bottom. The four vibration springs 43 are respectively fixedly connected to the upper end of the support column 3, and the No. 1 chute 46, the No. 2 chute 47 and the No. 3 chute 48 are all inclined at a twenty-degree angle.

[0031] Through the above scheme: the vibration device 4 is mainly composed of a vibration motor 41, a connecting plate 42, a vibration spring 43 and a screening box 44. The two vibration motors 41 are connected to the screening box 44 through the connecting plate 42. After starting the vibration motor 41, the vibration force generated by the vibration motor 41 is transmitted to the screening box 44 through the connecting plate 42. The four vibration springs 43 under the screening box 44 play a supporting and buffering role, so that the screening box 44 can vibrate stably under the action of the vibration motor 41. A feeding trough 45 is provided on the right upper end of the screening box 44 for receiving the medicine to be screened. Under the action of vibration, the medicine can flow and disperse better in the screening box 44 so as to enter the screening device 5 for screening. There are No. 1 chute 46, No. 2 chute 47 and No. 3 chute 48 in sequence from the bottom, and they are all inclined at a twenty-degree angle, which provides a position for the installation of the screening device 5. At the same time, the inclination angle helps the medicine to flow smoothly to the screening device 5 under the action of gravity. Through the cooperation of the vibration motor 41 and the vibration spring 43, the screening box 44 can produce stable vibration, ensuring that the medicine can fully flow and disperse during the screening process, thereby improving the screening effect. The twenty-degree inclined chute design, namely the No. 1 chute 46, the No. 2 chute 47 and the No. 3 chute 48, enables the screening device 5 to be stably installed in the screening box 44, and is conducive to the smooth flow of the medicine under the action of gravity, reduces the blockage phenomenon during the screening process, and improves the screening efficiency.

[0032] In this embodiment, the screening device 5 includes a No. 1 screening plate 51, a No. 2 screening plate 52 and a connecting assembly 53. The upper end of the No. 1 screening plate 51 and the upper end of the No. 2 screening plate 52 are both provided with a No. 1 drainage groove 54. The upper right part of the No. 1 screening plate 51 and the upper right part of the No. 2 screening plate 52 are both fixedly connected with a No. 1 screen 55. A number of No. 1 partition plates 56 are fixedly connected in the two No. 1 drainage grooves 54. The lower left part of the No. 1 screening plate 51 and the lower left part of the No. 2 screening plate 52 are both fixedly connected with a No. 1 discharge pipe 57. The connecting assembly 53 is located directly below the No. 2 screening plate 52. The No. 1 screening plate 51 is fixedly connected to the No. 1 chute 46, and the No. 2 screening plate 52 is fixedly connected to the No. 2 chute 47. The connecting assembly 53 includes a No. 3 sub-screen plate 531, the lower left part of the No. 3 sub-screen plate 531 is fixedly connected with a No. 2 discharge pipe 532, the upper end of the No. 3 sub-screen plate 531 is opened with a No. 2 drainage groove 535, and the No. 2 drainage groove 535 is fixedly connected with a number of No. 2 partition plates 533, the upper right part of the No. 3 sub-screen plate 531 is fixedly connected with a No. 2 screen 534, the No. 3 sub-screen plate 531 is fixedly connected in the No. 3 chute 48, the No. 2 discharge pipe 532 is communicated with the interior of the No. 3 sub-screen plate 531, and a number of No. 2 partition plates 533 are distributed one by one at equal distances in the longitudinal direction, the mesh diameter of the No. 1 screen 55 on the upper side is larger than the mesh diameter of the No. 1 screen 55 on the lower side, and the mesh diameter of the No. 1 screen 55 on the lower side is larger than the mesh diameter of the No. 2 screen 534.

[0033] According to the above scheme, the upper ends of the No. 1 sub-screen plate 51 and the No. 2 sub-screen plate 52 are both provided with a No. 1 drainage groove 54. The medicine flows into the No. 1 drainage groove 54 under the vibration of the screening box 44. The No. 1 sub-screen plate 51 and the No. 2 sub-screen plate 52 are fixedly connected to the No. 1 screen 55 on the right upper end. The mesh diameter of the No. 1 screen 55 on the upper side is larger than the mesh diameter of the No. 1 screen 55 on the lower side. During the flow of the medicine, the larger particles of the medicine are retained on the No. 1 screen 55, and the medicine that meets the mesh diameter passes through the No. 1 screen 55. The medicine continues to flow, and the several No. 1 partition plates 56 in the No. 1 drainage trough 54 play a role of drainage and separation, preventing the accumulation of medicines, so that the medicines can be evenly distributed on the sub-screening plate for screening. The screened medicines enter the next level of screening through the No. 1 sub-screening plate 51 and the No. 2 sub-screening plate 52 at the lower left of the No. 1 discharge pipe 57. The design of the No. 1 drainage trough 54 and the No. 1 partition plate 56 can make the medicine flow evenly on the sub-screening plate, thereby improving the accuracy and efficiency of screening. The design of the No. 1 screen 55 with different mesh diameters on the upper and lower layers can The medicine of different particle sizes can be gradually screened out to improve the screening accuracy. The No.3 sub-screen plate 531 is located just below the No.2 sub-screen plate 52, and a No.2 drainage groove 535 is opened on its upper end. The medicine falls from the No.1 discharge pipe 57 of the No.2 sub-screen plate 52 and flows into the No.2 drainage groove 535. The No.2 screen 534 is fixedly connected to the right part of the upper end of the No.3 sub-screen plate 531. The mesh diameter of the No.1 screen 55 on the lower side is larger than the mesh diameter of the No.2 screen 534, which can screen the medicine more finely. Several No. 2 partition plates 533 in 35 are distributed at equal intervals in the longitudinal direction, which play a role of drainage and separation to prevent the accumulation of medicines. The medicines that meet the requirements are discharged through the No. 2 discharge pipe 532 on the left side of the lower end of the No. 3 sub-screen plate 531. The design of the No. 2 drainage trough 535 and the No. 2 partition plate 533 can make the medicine flow evenly on the No. 3 sub-screen plate 531, further improving the accuracy and efficiency of screening. The mesh diameter of the No. 2 screen 534 is smaller, which can screen out the smallest medicine particles to meet different medicine screening needs.

[0034] It should be noted that the present invention is a drug screening device. During use, first, the drug to be screened is poured into the feed box 6. The drug enters the feed trough 45 of the screening box 44 of the vibrating device 4 from the feed box 6. The two vibration motors 41 in the vibrating device 4 are started, and the screening box 44 is driven to vibrate through the connecting plate 42. The four vibration springs 43 under the screening box 44 play a supporting and buffering role, so that the screening box 44 can vibrate stably. The screening device 5 is located in the screening box 44. The drug first falls on the No. 1 screening plate 51. Due to the vibration of the screening box 44, the drug is screened at the No. 1 screening plate. The medicine flows in the No. 1 drainage groove 54 on the plate 51, and the No. 1 screen 55 on the upper right side of the No. 1 sub-screen plate 51 performs preliminary screening on the medicine. The larger particles of medicine are retained on the No. 1 screen 55, and the medicine that meets the mesh diameter continues to flow through the No. 1 screen 55. Several No. 1 partition plates 56 in the No. 1 drainage groove 54 play a drainage and separation role to prevent the accumulation of medicines. The screened medicine enters the next level of screening through the No. 1 discharge pipe 57 on the lower left side of the No. 1 sub-screen plate 51. Then, the medicine falls on the No. 2 sub-screen plate 52, and also flows in the No. 1 drainage groove 54 on the No. 2 sub-screen plate 52. The No. 1 sieve 55 on the upper right side of the sieve plate 52 is screened again. Since the mesh diameter of the No. 1 sieve 55 on the upper side is larger than the mesh diameter of the No. 1 sieve 55 on the lower side, finer pharmaceutical particles can be screened out. The pharmaceuticals that meet the requirements continue to fall through the No. 1 discharge pipe 57 on the left side of the lower end of the No. 2 sub-sieve plate 52. Finally, the pharmaceuticals fall on the No. 3 sub-sieve plate 531 of the connecting component 53 and flow in the No. 2 drainage trough 535. The No. 2 sieve 534 on the upper right side of the No. 3 sub-sieve plate 531 performs the last level of screening. Since the mesh diameter of the No. 1 sieve 55 on the lower side is larger than the mesh diameter of the No. 2 sieve 534, the pharmaceuticals that meet the requirements continue to fall through the No. 1 discharge pipe 57 on the left side of the lower end of the No. 2 sub-sieve plate 52. Finally, the pharmaceuticals fall on the No. 3 sub-sieve plate 531 of the connecting component 53 and flow in the No. 2 drainage trough 535. The No. 2 sieve 534 on the upper right side of the No. 3 sub-sieve plate 531 performs the last level of screening. diameter, and can screen out the smallest pharmaceutical particles. Several No. 2 partition plates 533 in the No. 2 drainage trough 535 play a role in drainage and separation. The pharmaceuticals that meet the requirements are discharged through the No. 2 discharge pipe 532 on the left side of the lower end of the No. 3 sub-screen plate 531. The left end of the screening box 44 is respectively provided with No. 1 chute 46, No. 2 chute 47 and No. 3 chute 48 from top to bottom, and they are all inclined at a twenty-degree angle, so that the No. 1 sub-screen plate 51, No. 2 sub-screen plate 52 and No. 3 sub-screen plate 531 of the sub-screen device 5 can be stably installed in the screening box 44, and it also helps the pharmaceuticals to flow smoothly for screening under the action of gravity.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A drug screening device, comprising an anti-slip layer (1), characterized in that: The upper end of the anti-slip layer (1) is fixedly connected to a bottom plate (2), the four corners of the upper end of the bottom plate (2) are fixedly connected to support columns (3), the upper ends of the four support columns (3) are commonly fixedly connected to a vibration device (4), the upper right portion of the vibration device (4) is fixedly connected to a feed box (6), and a screening device (5) is fixedly connected inside the vibration device (4); The vibration device (4) includes a vibration spring (43), four of which are provided. The upper ends of the four vibration springs (43) are fixedly connected to a screening box (44). A feed trough (45) is provided at the right portion of the upper end of the screening box (44). The lower end of the screening box (44) is fixedly connected to a connecting plate (42). Two vibration motors (41) are provided at the right end of the connecting plate (42). The left end of the screening box (44) is provided with a first chute (46), a second chute (47) and a third chute (48) in sequence from top to bottom. The four vibration springs (43) are fixedly connected to the upper end of the support column (3).

2. A drug screening device according to claim 1, characterized in that: The screening device (5) comprises a No. 1 screening plate (51), a No. 2 screening plate (52) and a connecting assembly (53), wherein the upper end of the No. 1 screening plate (51) and the upper end of the No. 2 screening plate (52) are both provided with a No. 1 drainage groove (54), the upper right portion of the No. 1 screening plate (51) and the upper right portion of the No. 2 screening plate (52) are both fixedly connected with a No. 1 screen (55), and the two No. 1 drainage grooves (54) are both fixedly provided with a No. 1 screen (55). A plurality of No. 1 partition plates (56) are fixedly connected, the lower left portion of the No. 1 sub-screen plate (51) and the lower left portion of the No. 2 sub-screen plate (52) are fixedly connected to a No. 1 discharge pipe (57), the connecting assembly (53) is located directly below the No. 2 sub-screen plate (52), the No. 1 sub-screen plate (51) is fixedly connected to the No. 1 chute (46), and the No. 2 sub-screen plate (52) is fixedly connected to the No. 2 chute (47).

3. The drug screening device according to claim 2, characterized in that: The connecting assembly (53) includes a No. 3 sub-screen plate (531), the lower left portion of the No. 3 sub-screen plate (531) is fixedly connected to a No. 2 discharge pipe (532), the upper end of the No. 3 sub-screen plate (531) is provided with a No. 2 drainage groove (535), a plurality of No. 2 partition plates (533) are fixedly connected in the No. 2 drainage groove (535), the upper right portion of the No. 3 sub-screen plate (531) is fixedly connected to a No. 2 screen (534), and the No. 3 sub-screen plate (531) is fixedly connected in the No. 3 chute (48).

4. The drug screening device according to claim 3, characterized in that: The No. 2 discharge pipe (532) is communicated with the interior of the No. 3 screening plate (531), and a plurality of No. 2 separation plates (533) are distributed one by one at equal distances in the longitudinal direction.

5. The drug screening device according to claim 2, characterized in that: The mesh diameter of the upper No. 1 screen (55) is larger than the mesh diameter of the lower No. 1 screen (55), and the mesh diameter of the lower No. 1 screen (55) is larger than the mesh diameter of the No. 2 screen (534).

6. The drug screening device according to claim 1, characterized in that: The first chute (46), the second chute (47) and the third chute (48) are all inclined at an angle of twenty degrees.