A vibrating screening device for drug preparation

Abstract

The present invention discloses a vibrating screening device for medicine preparation, belonging to the technical field of vibrating screening devices, comprising a screening box, a feed hopper, a screening mechanism and two partitions; the feed hopper is arranged above the screening box, the screening mechanism and the two partitions are arranged inside the screening box, and the two partitions are located below the screening mechanism, wherein a storage cavity is formed between the partition located above and the screening mechanism and between the two partitions, and a discharge pipe is arranged in each storage cavity; the screening mechanism comprises a first screening element which is located in the screening box and vibrates up and down, and a collector, and the collector is fixedly arranged inside the screening box and located below the first screening element; the present invention, through the upper screening component arranged, can extend the vibration path of the medicine through the turbine linear inner screen, and can also increase the screening area of ​​the medicine through the two sides and the top of the inner screen, thereby further improving the screening effect.

Description

Technical Field

[0001] The invention belongs to the technical field of vibrating screening devices, in particular to a vibrating screening device for medicine preparation. Background Art

[0002] In the process of drug preparation, granular drugs are mostly screened by a vibrating screening device to remove drug powder in the granular drugs, thereby ensuring the quality of the drugs; for example, the patent document with the authorization announcement number CN211247270U discloses a screening device for drug production and processing, comprising a base and a first screening chamber and a second screening chamber arranged on the top of the base, a plurality of vibration springs are evenly arranged between the bottom surface of the first screening chamber and the top surface of the base, the second screening chamber is at the top of the first screening chamber, and the top of the second screening chamber is The surface is provided with a top cover, and the top of the top cover is provided with an integrated feed port; through the provided discharge extension sleeve, annular thread ring, internal thread, annular thread groove, sleeve placement hole, side block, spring groove, semicircular telescopic clamp block, side groove and semicircular clamp groove, the operator can fix the discharge extension sleeve at the bottom end of the L-shaped discharge port, and the material discharged from the L-shaped discharge port can accurately fall into the bottom collection bucket through the discharge extension sleeve, thereby improving the material collection efficiency, and each discharge extension sleeve can be combined and spliced ​​with each other; but the defects thereof are:

[0003] In the process of screening granular medicines, since the screening path is short and when there are many granular medicines in the screening device, the screening effect of the screening device on the medicines will not be good enough. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a vibrating screening device for drug preparation, which effectively solves the problem raised in the background technology that in the process of screening granular drugs, the screening path is short and when there are more granular drugs in the screening device, the screening effect of the screening device on the drugs is not good enough.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vibrating screening device for drug preparation, comprising a screening box, a feed hopper, a screening mechanism and two partitions; the feed hopper is arranged above the screening box, the screening mechanism and the two partitions are arranged inside the screening box, and the two partitions are located below the screening mechanism, wherein a storage cavity is formed between the partition located above and the screening mechanism and between the two partitions, and a discharge pipe is arranged in each storage cavity; the screening mechanism comprises an upper screening component and a collector which are located in the screening box and vibrate up and down, and the collector is fixedly arranged inside the screening box and below the upper screening component, and the space formed between the upper screening component and the collector is connected to the storage cavity located above through the collector; the upper screening component comprises an outer screen, an inner screen and a vibration motor, the outer screen is slidably arranged inside the screening box, the inner screen is connected to the outer screen as a whole and is located above the outer screen, and the vibration motor is fixedly arranged at the bottom end of the outer screen.

[0006] Preferably, the outer screen is circular in shape, the inner screen is turbine linear in shape, and the longitudinal section of the inner screen is n-shaped.

[0007] Preferably, the material collector includes a collecting hopper and a conveying pipe. The collecting hopper is funnel-shaped and fixedly arranged inside the screening box. The conveying pipe is fixedly arranged at the bottom end of the collecting hopper and connected thereto. The bottom end of the conveying pipe passes through the middle of the screening box and is connected to the storage cavity located above.

[0008] Preferably, the screening mechanism also includes a spiral plate body, a spring, a lower screening component and a connecting pipe; wherein the spiral plate body is fixedly arranged inside the screening box, the spiral plate body and the lower screening component located above it are fixed by a spring, and the second screening component is fixed to the outer screen in the lower screening component by a connecting pipe.

[0009] Preferably, the outer screen is provided with a feed discharge port, which is connected to the interior of the lower screening component through a connecting pipe, and a cylindrical flexible sleeve is sleeved on the outer side of the connecting pipe, the top end of the flexible sleeve is fixedly arranged with the feed discharge port, and the bottom end of the flexible sleeve is fixedly arranged with the collecting hopper.

[0010] Preferably, the lower screening component includes a first screening component, a second screening component, an auxiliary component and a material guide tube; wherein the first screening component and the second screening component are connected as a whole, the auxiliary component is located inside the first screening component and the second screening component that are connected as a whole, and the interior of the lower screening component is connected to the storage cavity located below through the material guide tube.

[0011] Preferably, the first screening element comprises a first lower plate portion, a first inclined plate portion, a first vertical plate portion and a first upper plate portion which are connected as one and spirally arranged; sieve holes are evenly provided on the surfaces of the first lower plate portion, the first inclined plate portion, the first vertical plate portion and the first upper plate portion; wherein the first lower plate portion is provided with one and is horizontally arranged, the first inclined plate portion is provided with two, the two first inclined plate portions are distributed in an inverted eight shape on both sides of the first lower plate portion, the first vertical plate portion is provided with two, the two first vertical plate portions are vertically distributed above the two first inclined plate portions, and the first upper plate portion is provided with one and is horizontally distributed between the two first vertical plate portions.

[0012] Preferably, the second screening element has the same structure as the first screening element; the difference is that the first lower plate portion in the second screening element is inclined, and one end of the first lower plate portion in the second screening element close to the central axis direction of the screening box is higher than the end of the first lower plate portion in the second screening element away from the central axis direction of the screening box.

[0013] Preferably, the interior of the auxiliary component is connected to an external fan, wherein the auxiliary component includes a second lower plate portion, a second inclined plate portion, a second vertical plate portion, a second upper plate portion, a connecting portion and an air outlet duct that are connected as one and spirally arranged; wherein the second lower plate portion is provided with one and is horizontally arranged, the second inclined plate portion is provided with two, the two second inclined plate portions are distributed in an inverted eight-shaped shape on both sides of the second lower plate portion, the second vertical plate portions are provided with two, the two second vertical plate portions are vertically distributed above the two second inclined plate portions, the second upper plate portions are provided with two and are distributed in an eight-shaped shape between the two second vertical plate portions, the connecting portion is located between the two second upper plate portions and is fixedly arranged on the inner top wall of the lower screening component, and the air outlet ducts are provided with multiple and are fixedly distributed on the outsides of the two second vertical plate portions.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1) During operation, the upper screening component can extend the vibration path of the medicine through the turbine linear inner screen, and the screening area of ​​the medicine can be increased through the two sides and the top of the inner screen, thereby further improving the screening effect;

[0016] 2) During operation, when there are many drugs, the spiral lower screening component can be used to extend the screening path, so that the drug powder can be screened in all directions from top to bottom, left to right, thereby further expanding the screening area and improving the screening effect of the drugs;

[0017] 3) During operation, by setting up the second screening element, when the medicine rolls inside the second screening element, it will move away from the central axis of the screening box, thereby dispersing the medicine. When inside the first screening element, the medicine will move toward the central axis of the screening box, avoiding the accumulation of medicine during the falling process, thereby improving the screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0019] In the attached picture:

[0020] Figure 1 It is a structural schematic diagram of a vibrating screening device for drug preparation of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the vibrating screening device of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the screening mechanism of the present invention;

[0023] Figure 4 This is one of the schematic diagrams of the structure of the upper screening component of the present invention;

[0024] Figure 5 This is the second structural schematic diagram of the upper screening component of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the material collector of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the lower screening component of the present invention;

[0027] Figure 8 For the present invention Figure 7 The enlarged structural diagram at A in the middle;

[0028] Fig. 9 For the present invention Figure 7 Enlarged structural diagram at B in the middle.

[0029] In the figure: 1, screening box; 2, feed hopper; 3, screening mechanism; 4, partition; 5, storage chamber; 6, discharge pipe; 7, spiral plate; 8, spring; 9, lower screening component; 10, connecting pipe; 11, upper screening component; 1101, outer screen; 1102, inner screen; 1103, discharge port; 12, collector; 1201, collection hopper; 1202, feed pipe; 1203, flexible sleeve; 13. First screening element; 1301. First lower plate portion; 1302. First inclined plate portion; 1303. First vertical plate portion; 1304. First upper plate portion; 14. Second screening element; 15. Auxiliary element; 1501. Second lower plate portion; 1502. Second inclined plate portion; 1503. Second vertical plate portion; 1504. Second upper plate portion; 1505. Connecting portion; 1506. Air outlet pipe; 16. Material guide pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Depend on Figure 1-9 given;

[0032] Reference Figure 1 , Figure 2 as well as Figure 3 The present invention relates to a vibrating screening device for drug preparation, comprising a screening box 1, a feed hopper 2, a screening mechanism 3 and two partitions 4; the feed hopper 2 is arranged above the screening box 1, the screening mechanism 3 and the two partitions 4 are arranged inside the screening box 1, and the two partitions 4 are located below the screening mechanism 3, wherein a storage cavity 5 is formed between the upper partition 4 and the screening mechanism 3 and between the two partitions 4, and each storage cavity 5 is provided with a discharge pipe 6;

[0033] In the prior art, granular medicines are usually fed into the interior of a screening box 1 through a feed hopper 2, and then the granular medicines can be screened by a screening mechanism 3 in the screening box 1. Finally, the granular medicines after screening can be stored in a corresponding storage cavity 5. When necessary, the screened granular medicines can be discharged through a corresponding discharge pipe 6 to ensure the quality of the medicines.

[0034] Reference Figure 4 as well as Figure 5, in order to solve the problem that the existing screening device has a short screening path during the screening of granular drugs, and when there are many granular drugs in the screening device, the screening effect of the screening device on the drugs is not good enough, the screening mechanism 3 includes an upper screening component 11 and a collector 12 which is located in the screening box 1 and vibrates up and down, the collector 12 is fixedly arranged inside the screening box 1 and is located below the upper screening component 11, and the space formed between the upper screening component 11 and the collector 12 is connected to the storage cavity 5 located above through the collector 12; the upper screening component 11 includes an outer screen 1101, an inner screen 1102 and a vibration motor, the outer screen 1101 is slidably arranged inside the screening box 1, the inner screen 1102 is connected to the outer screen 1101 as a whole and is located above the outer screen 1101, and the vibration motor is fixedly arranged at the bottom end of the outer screen 1101;

[0035] With such a design, when the medicine falls from the feed hopper 2, it will first fall to the center of the screening mechanism 3, that is, the center of the outer screen 1101 and the inner screen 1102. When the outer screen 1101 is driven to vibrate up and down by the vibration motor, under the action of the inner screen 1102, the path of the medicine from the center of the outer screen 1101 to the edge of the outer screen 1101 is extended, thereby extending the screening time of the medicine in a limited space, thereby improving the screening effect; after passing through the outer screen 1101, the powder of the medicine enters the storage cavity 5 located above through the collector 12 for storage, while the granular medicine remains above the outer screen 1101.

[0036] Preferably, the outer screen 1101 is circular in shape, the inner screen 1102 is turbine linear in shape, and the longitudinal section of the inner screen 1102 is n-shaped. It should be noted that the surface of the outer screen 1101 and the surface of the inner screen 1102 are evenly distributed with sieve holes, which are not drawn in the figure;

[0037] In this way, the vibration path of the medicine can be extended through the inner screen 1102, and the screening area of ​​the medicine can be increased through the two sides and the top of the inner screen 1102, thereby further improving the screening effect.

[0038] Reference Figure 6 The material collector 12 includes a material collecting hopper 1201 and a material conveying pipe 1202. The material collecting hopper 1201 is in the shape of a funnel. The material collecting hopper 1201 is fixedly arranged inside the screening box 1. The material conveying pipe 1202 is fixedly arranged at the bottom end of the material collecting hopper 1201 and communicated with the material conveying pipe 1202. The bottom end of the material conveying pipe 1202 passes through the middle of the screening box 1 and communicates with the storage cavity 5 located above.

[0039] With such a design, when the sieved pharmaceutical powder falls into the collecting hopper 1201 , it can be transported to the corresponding storage cavity 5 through the conveying pipe 1202 .

[0040] Reference Figure 3 The screening mechanism 3 further comprises a spiral plate body 7, a spring 8, a lower screening component 9, a connecting pipe 10 and a material guide pipe 16; wherein the spiral plate body 7 is fixedly arranged inside the screening box 1, the spiral plate body 7 and the lower screening component 9 located above it are fixedly arranged by the spring 8, the lower screening component 9 is fixedly arranged with the outer screen 1101 in the first screening element 13 by the connecting pipe 10, and the interior of the lower screening component 9 is connected with the storage cavity 5 located below through the material guide pipe 16;

[0041] With this design, the outer screen 1101 can also drive the lower screening component 9 to vibrate through the connecting pipe 10. When there are more medicines on the outer screen 1101, the granular medicines on the outer screen 1101 enter the lower screening component 9 through the connecting pipe 10 as they vibrate, and the screening path can be extended again through the spiral lower screening component 9 to further improve the screening effect of the medicines. The screened powder passes through the lower screening component 9 and enters the spiral channel between the lower screening component 9 and the spiral plate body 7, and finally enters the storage cavity 5 located above for storage. The screened medicines roll inside the lower screening component 9 and then enter the storage cavity 5 located below through the guide pipe 16 for storage.

[0042] Reference Figure 6 as well as Figure 7 The outer screen 1101 is provided with a feed opening 1103, which is communicated with the interior of the lower screening component 9 through a connecting pipe 10, and a cylindrical flexible sleeve 1203 is sleeved on the outer side of the connecting pipe 10, and the top end of the flexible sleeve 1203 is fixedly arranged with the feed opening 1103, and the bottom end of the flexible sleeve 1203 is fixedly arranged with the collecting hopper 1201;

[0043] With this design, the flexible sleeve 1203 plays a good sealing role, preventing drug powder from entering the interior of the lower screening component 9.

[0044] Reference Figure 7 The lower screening component 9 includes a first screening component 13, a second screening component 14 and an auxiliary component 15; wherein the first screening component 13 and the second screening component 14 are connected as a whole, and the auxiliary component 15 is located inside the first screening component 13 and the second screening component 14 connected as a whole;

[0045] After the granular medicine enters the first screening element 13 and then enters the interior of the second screening element 14, it can be screened again.

[0046] Reference Figure 8 as well as Fig. 9Specifically, the first screening element 13 includes a first lower plate portion 1301, a first inclined plate portion 1302, a first vertical plate portion 1303 and a first upper plate portion 1304 which are connected as one and spirally arranged; the surfaces of the first lower plate portion 1301, the first inclined plate portion 1302, the first vertical plate portion 1303 and the first upper plate portion 1304 are uniformly provided with sieve holes; wherein the first lower plate portion 1301 is provided with one and is horizontally arranged, the first inclined plate portion 1302 is provided with two, the two first inclined plate portions 1302 are distributed in an inverted eight-shaped shape on both sides of the first lower plate portion 1301, the first vertical plate portion 1303 is provided with two, the two first vertical plate portions 1303 are vertically distributed above the two first inclined plate portions 1302, and the first upper plate portion 1304 is provided with one and is horizontally distributed between the two first vertical plate portions 1303;

[0047] With such a design, when the medicine vibrates inside the first screening element 13 and the second screening element 14, the medicine powder can be screened in all directions from top to bottom, left to right, thereby further expanding the screening area and improving the screening effect of the medicine.

[0048] Specifically, the second screening element 14 has the same structure as the first screening element 13; the difference is that the first lower plate portion 1301 in the second screening element 14 is tilted, and one end of the first lower plate portion 1301 in the second screening element 14 close to the central axis direction of the screening box 1 is higher than the other end of the first lower plate portion 1301 in the second screening element 14 away from the central axis direction of the screening box 1;

[0049] With such a design, since the lower screening component 9 is spiral in shape as a whole, when the medicines roll down inside the lower screening component 9, the medicines will gradually accumulate in a position close to the central axis direction of the screening box 1, thereby reducing the screening effect. In this regard, by setting the first lower plate portion 1301 in the second screening component 14, when the medicines roll down inside the second screening component 14, they will move away from the central axis direction of the screening box 1, thereby dispersing the medicines and ensuring the screening effect.

[0050] Reference Fig. 9The interior of the auxiliary component 15 is connected to the external fan, wherein the auxiliary component 15 includes a second lower plate portion 1501, a second inclined plate portion 1502, a second vertical plate portion 1503, a second upper plate portion 1504, a connecting portion 1505 and an air outlet pipe 1506 that are connected as a whole and spirally arranged; wherein the second lower plate portion 1501 is provided with one and is horizontally arranged, and the second inclined plate portion 1502 is provided with two, and the two second inclined plate portions 1502 are distributed in an inverted eight-shaped manner on the second lower plate portion 1501 On both sides of the lower sieving component 9, two second vertical plate portions 1503 are provided, and the two second vertical plate portions 1503 are vertically distributed above the two second inclined plate portions 1502, and two second upper plate portions 1504 are provided and distributed between the two second vertical plate portions 1503 in an eight-shaped shape, and the connecting portion 1505 is located between the two second upper plate portions 1504 and is fixedly provided on the inner top wall of the lower screening component 9, and a plurality of air outlet pipes 1506 are provided and fixedly distributed on the outer sides of the two second vertical plate portions 1503;

[0051] With such a design, when the medicines move upward due to vibration on the second lower plate portion 1501, part of the medicines will be restricted by the second inclined plate portion 1502, causing the medicines to tilt and move in the direction of the second vertical plate portion 1503. At the same time, wind force is generated by an external fan, so that the airflow is discharged through the air outlet pipe 1506 and impacts the medicines. The medicines move with the wind force and collide with the second vertical plate portion 1503 to play a screening role. After the collision, the medicines fall along the second inclined plate portion 1502 and move to the second lower plate portion 1501, forming a cycle, thereby further accelerating the screening efficiency of the medicines.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vibrating screening device for preparing medicines, comprising a screening box (1), a feed hopper (2), a screening mechanism (3) and two partitions (4), wherein a storage cavity (5) is formed between the upper partition (4) and the screening mechanism (3) and between the two partitions (4); characterized in that: The screening mechanism (3) comprises an upper screening component (11) located in the screening box (1) and vibrating upward and downward, and a material collector (12); the material collector (12) is fixedly arranged inside the screening box (1) and located below the upper screening component (11); and a space formed between the upper screening component (11) and the material collector (12) is connected to a storage cavity (5) located above through the material collector (12); the upper screening component (11) comprises an outer screen (1101), an inner screen (1102) and a vibration motor; the outer screen (1101) is slidably arranged inside the screening box (1), the inner screen (1102) is in the shape of a turbine line, the longitudinal section of the inner screen (1102) is in the shape of an n-shape, the inner screen (1102) is connected to the outer screen (1101) as a whole and is located above the outer screen (1101), and the vibration motor is fixedly arranged at the bottom end of the outer screen (1101); in the working state, the medicine moves from the center of the outer screen (1101) along the trajectory of the inner screen (1102) to the edge of the outer screen (1101); The screening mechanism (3) further comprises a spiral plate body (7), a spring (8), a lower screening component (9) and a connecting pipe (10); wherein the spiral plate body (7) is fixedly arranged inside the screening box (1), the spiral plate body (7) and the lower screening component (9) located above the spiral plate body (7) are fixedly arranged via the spring (8), and the lower screening component (9) is fixedly arranged with an outer screen (1101) in the first screening component (13) via the connecting pipe (10); The outer screen (1101) is provided with a feed opening (1103), the feed opening (1103) being connected to the interior of the lower screening component (9) via a connecting pipe (10), a cylindrical flexible sleeve (1203) being sleeved on the outer side of the connecting pipe (10), the top end of the flexible sleeve (1203) being fixedly arranged with the feed opening (1103), and the bottom end of the flexible sleeve (1203) being fixedly arranged with the collecting hopper (1201); The lower screening component (9) comprises a first screening component (13), a second screening component (14), an auxiliary component (15) and a material guide pipe (16); wherein the first screening component (13) and the second screening component (14) are connected as a whole, the auxiliary component (15) is located inside the first screening component (13) and the second screening component (14) connected as a whole, and the interior of the lower screening component (9) is connected to the storage cavity (5) located below through the material guide pipe (16); The first screening element (13) comprises a first lower plate portion (1301), a first inclined plate portion (1302), a first vertical plate portion (1303) and a first upper plate portion (1304) which are connected as one and spirally arranged; the surfaces of the first lower plate portion (1301), the first inclined plate portion (1302), the first vertical plate portion (1303) and the first upper plate portion (1304) are uniformly provided with screening holes; wherein the first lower plate portion (1301) is provided with one and is horizontally arranged, the first inclined plate portion (1302) is provided with two, the two first inclined plate portions (1302) are distributed on both sides of the first lower plate portion (1301) in an inverted figure eight shape, the first vertical plate portion (1303) is provided with two, the two first vertical plate portions (1303) are vertically distributed above the two first inclined plate portions (1302), and the first upper plate portion (1304) is provided with one and is horizontally distributed between the two first vertical plate portions (1303); The second screening element (14) has the same structure as the first screening element (13); the difference is that the first lower plate portion (1301) in the second screening element (14) is arranged tilted, and an end of the first lower plate portion (1301) in the second screening element (14) close to the central axis of the screening box (1) is higher than an end of the first lower plate portion (1301) in the second screening element (14) far from the central axis of the screening box (1); The interior of the auxiliary component (15) is connected to an external fan, wherein the auxiliary component (15) comprises a second lower plate portion (1501) connected as one body and spirally arranged, a second inclined plate portion (1502), a second vertical plate portion (1503), a second upper plate portion (1504), a connecting portion (1505) and an air outlet pipe (1506); wherein the second lower plate portion (1501) is provided with one and is horizontally arranged, and the second inclined plate portion (1502) is provided with two, and the two second inclined plate portions (1502) are distributed on the second lower plate portion (1506) in an inverted figure eight shape. 01), two second vertical plate portions (1503) are provided, the two second vertical plate portions (1503) are vertically distributed above the two second inclined plate portions (1502), two second upper plate portions (1504) are provided and are distributed in an eight-shaped pattern between the two second vertical plate portions (1503), a connecting portion (1505) is located between the two second upper plate portions (1504) and is fixedly provided on the inner top wall of the lower screening component (9), and a plurality of air outlet ducts (1506) are provided and are fixedly distributed on the outer sides of the two second vertical plate portions (1503).

2. A vibrating screening device for drug preparation according to claim 1, characterized in that: The feed hopper (2) is arranged above the screening box (1), the screening mechanism (3) and the two partitions (4) are arranged inside the screening box (1), and the two partitions (4) are located below the screening mechanism (3), and a discharge pipe (6) is arranged in each storage cavity (5); the outer screen (1101) is circular in shape.

3. A vibrating screening device for drug preparation according to claim 1, characterized in that: The material collector (12) comprises a material collecting hopper (1201) and a material conveying pipe (1202); the material collecting hopper (1201) is funnel-shaped and fixedly arranged inside the screening box (1); the material conveying pipe (1202) is fixedly arranged at the bottom end of the material collecting hopper (1201) and is connected thereto; the bottom end of the material conveying pipe (1202) passes through the middle of the screening box (1) and is connected to a storage cavity (5) located above.

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