A screening device for veterinary drug production

Abstract

The present invention discloses a screening device for veterinary drug production, comprising a screening box and a screening drum; further comprising a supporting rolling assembly and a stirring assembly; the supporting rolling assembly comprises a driving assembly, a rotating shaft, a connecting frame, a supporting seat and a roller, the connecting frame being installed in the screening drum, one end of the rotating shaft being connected to the connecting frame, and the other end being transmission-connected to the driving assembly, the supporting seat being installed at the bottom of the screening box, and the roller being rotatably installed at the top of the supporting seat; the stirring assembly being used to stir the material inside the screening drum, and the rotation direction of the stirring assembly being opposite to the rotation direction of the screening drum. The present invention screens medicinal materials by providing a rotatable screening drum, and at the same time providing a stirring assembly to stir the medicinal materials in the screening drum, and the rotation direction of the stirring assembly being opposite to the rotation direction of the screening drum, so that the medicinal materials in the screening drum can be fully mixed and moved, and the smaller particles in the medicinal materials can be smoothly screened out from the sieve holes, thereby making the screening of the medicinal materials more thorough.

Description

Technical Field

[0001] The invention relates to the technical field of screening devices, in particular to a screening device for veterinary drug production. Background Art

[0002] Medicinal materials are raw materials for pharmaceutical production, particularly in China, traditional Chinese medicine (TCM), meaning unprocessed or unfinished raw materials. Veterinary herbal medicine is a general term used by traditional Chinese veterinarians to designate traditional Chinese medicines and popular folk herbal remedies for veterinary use. These herbs are derived from plants, animals, minerals, and their processed products, with botanicals comprising the majority. In traditional Chinese veterinary medicine, TCM is a primary means of preventing and treating livestock diseases, alongside acupuncture, moxibustion, and ironing.

[0003] Screening is often required in veterinary drug processing to crush and screen some materials with different particle sizes into granular medicinal materials of similar sizes to facilitate subsequent mixing and processing. However, the screening devices in the existing technology do not screen thoroughly. For example, larger granular medicinal materials after screening are easily mixed with smaller granular medicinal materials. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a screening device for veterinary drug production, which screens medicinal materials by setting a rotatable screening cylinder, and at the same time provides a stirring component to stir the medicinal materials in the screening cylinder, and the rotation direction of the stirring component is opposite to the rotation direction of the screening cylinder, so that the medicinal materials in the screening cylinder can be fully moved, and the smaller particles in the medicinal materials can be smoothly screened out from the sieve holes, so that the screening of the medicinal materials is more thorough.

[0005] The present invention provides a technical solution to solve the above problems: a screening device for veterinary drug production, comprising a screening box and a screening cylinder, wherein the screening cylinder is installed inside the screening box; and further comprising a supporting rolling assembly and a stirring assembly;

[0006] The screening cylinder is provided with a feed port at one end and a discharge port at the other end, and the screening cylinder is provided with sieve holes;

[0007] The supporting rolling assembly includes a driving assembly 1, a rotating shaft, a connecting frame, a supporting seat and a roller. The connecting frame is installed in the screening drum. One end of the rotating shaft is connected to the connecting frame, and the other end is in transmission connection with the driving assembly. The supporting seat is installed at the bottom of the screening box. The roller is rotatably installed on the top of the supporting seat. The screening drum is provided with a guide rail that rotates with the roller.

[0008] The stirring component is used to stir the material inside the screening drum, and the rotation direction of the stirring component is opposite to the rotation direction of the screening drum.

[0009] Preferably, the driving assembly 1 includes a motor 1, a transmission gear 1 and a transmission gear 2, the motor 1 is installed on the screening box, the transmission gear 1 is installed at the output end of the motor 1, the transmission gear 2 is installed at the end of the rotating shaft away from the connecting frame, and the transmission gear 1 is meshed with the transmission gear 2 for transmission.

[0010] Preferably, the stirring assembly includes a second driving assembly, a stirring shaft and a plurality of stirring paddles. The stirring shaft is rotatably mounted on the screening box, one end of the stirring shaft extends into the screening cylinder, and the plurality of stirring paddles are mounted on the stirring shaft. The driving assembly is used to drive the stirring shaft to rotate.

[0011] Preferably, the drive assembly 2 includes a motor 2, a transmission gear 3 and a transmission gear 4. The motor 2 is installed on the screening box, the transmission gear 3 is installed at the output end of the motor 2, and the transmission gear 4 is installed at the end of the stirring shaft away from the screening cylinder. The transmission gear 3 and the transmission gear 4 are meshed for transmission.

[0012] Preferably, spiral blades are provided in the screening cylinder.

[0013] Preferably, a material collection box is provided in the screening box just below the screening cylinder, and the upper end of the material collection box is open.

[0014] Preferably, it further includes a dust collection mechanism, which includes a negative pressure fan and a dust collection box. The negative pressure fan is installed outside the screening box, and the dust collection box is installed inside the screening box. The negative pressure fan is connected to the dust collection box through a connecting pipe.

[0015] Preferably, the dust collection box includes an upper box body, a lower box body and several dust collection filter boxes, an air inlet is provided on one side of the upper box body, an air inlet space is provided inside the upper box body, several rows of fixing holes are provided on the top of the air inlet space, permanent magnets are installed at the bottom of the fixing holes, an iron block that can be attracted by the permanent magnet is provided on the top of the dust collection filter box, several rows of storage holes are provided at positions corresponding to the fixing holes on the lower box body, after the dust collection filter box is installed, the bottom of the box is flush with the upper end surface of the storage hole, and the dust collection filter box detaches from the fixing hole and falls into the storage hole after exceeding the set weight.

[0016] Preferably, the dust collection box is further provided with a positioning component that can limit and fix the dust collection filter box.

[0017] Preferably, the positioning assembly includes a movable connecting rod, a permanent magnetic ring 1, a permanent magnetic ring 2, a suction block and several clamping rods. A movable cavity is provided on the upper box body, and the movable cavity is connected with the fixed hole through the mounting hole. The movable connecting rod is movably installed in the movable cavity. Several clamping rods are installed on the movable connecting rod. The clamping rod is movably matched with the mounting hole. A clamping groove that cooperates with the clamping rod is provided at the upper end of the dust filter box. The permanent magnetic ring 1 and the permanent magnetic ring 2 are installed in the movable cavity at intervals. The permanent magnetic ring 1 and the permanent magnetic ring 2 are movably fitted on the movable connecting rod. The suction block is installed on the movable connecting rod, and the suction block is located between the permanent magnetic ring 1 and the permanent magnetic ring 2.

[0018] Compared with the prior art, the advantages of the present invention are: the present invention screens the medicinal materials by providing a rotatable screening cylinder, and at the same time provides a stirring component to stir the medicinal materials in the screening cylinder, and the rotation direction of the stirring component is opposite to the rotation direction of the screening cylinder, so that the medicinal materials in the screening cylinder can be fully mixed and moved, and the smaller particles in the medicinal materials can be smoothly screened out from the sieve holes, and the screening of the medicinal materials is more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a cross-sectional view of the screening drum of the present invention;

[0022] Figure 3 It is a left side view of the screening drum of the present invention;

[0023] Figure 4 It is a right side view of the screening drum of the present invention;

[0024] Figure 5 is a cross-sectional view of the dust collection box of the present invention;

[0025] Figure 6 yes Figure 5 A magnified schematic diagram of point A in the middle;

[0026] Figure 7 yes Figure 5 A magnified schematic diagram of point B in the middle;

[0027] Figure 8 It is a bottom view of the upper box of the present invention;

[0028] Figure 9 It is a top view of the lower box body of the present invention.

[0029] Figure markings: 1, screening box, 2, upper box body, 3, connecting pipe, 4, negative pressure fan, 5, transmission gear 2, 6, transmission gear 1, 7, motor 1, 8, rotating shaft, 9, collecting box, 10, sieve hole, 11, support base, 12, roller, 13, guide rail, 14, motor 2, 15, transmission gear 3, 16, transmission gear 4, 17, stirring shaft, 18, feed port, 19, screening cylinder, 20, stirring paddle, 21, connecting frame, 22, screw Rotary blade, 23. Discharge port, 24. Movable connecting rod, 25. Movable cavity, 26. Dust filter box, 27. Partition, 28. Counterweight, 29. Storage hole, 30. Lower box, 31. Clamping rod, 32. Mounting hole, 33. Clamping slot, 34. Fixing hole, 35. Iron block, 36. Permanent magnet, 37. Suction block, 38. Permanent magnet ring 2, 39. Permanent magnet ring 1, 40. Guide seat, 41. Guide bar, 42. Air inlet space, 43. Air inlet. DETAILED DESCRIPTION

[0030] The following will describe the embodiments of the present invention in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0031] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. Throughout the description of the present invention, "several" means two or more, unless otherwise specifically defined.

[0033] In the present invention, unless otherwise specified or limited, the terms "assemble," "connect," and "connect" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection; direct connection, connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0035] It should also be understood that the terms used in this description of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the description of the embodiments of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0036] As shown in the accompanying drawings, a specific embodiment of the present invention is a screening device for veterinary drug production, comprising a screening box 1 and a screening cylinder 19, wherein the screening cylinder 19 is installed inside the screening box 1; a supporting rolling assembly and a stirring assembly;

[0037] The screening cylinder 19 is provided with a feed port 18 at one end and a discharge port 23 at the other end. The screening cylinder 19 is provided with a sieve hole 10;

[0038] The supporting rolling assembly includes a driving assembly 1, a rotating shaft 8, a connecting frame 21, a supporting seat 11 and a roller 12. The connecting frame 21 is installed in the screening drum 19. One end of the rotating shaft 8 is connected to the connecting frame 21, and the other end is transmission-connected to the driving assembly. The supporting seat 11 is installed at the bottom of the screening box 1. The roller 12 is rotatably installed on the top of the supporting seat 11. The screening drum 19 is provided with a guide rail 13 that rotates with the roller 12.

[0039] The stirring assembly is used to stir the material inside the screening drum 19 , and the rotation direction of the stirring assembly is opposite to the rotation direction of the screening drum 19 .

[0040] In the above scheme, the medicinal materials are screened by setting a rotatable screening cylinder, and a stirring component is provided to stir the medicinal materials in the screening cylinder, and the rotation direction of the stirring component is opposite to the rotation direction of the screening cylinder, so that the medicinal materials in the screening cylinder can be fully mixed and moved, and the smaller particles in the medicinal materials can be smoothly screened out from the sieve holes, and the screening of the medicinal materials is more thorough.

[0041] Specifically, the drive assembly 1 includes a motor 7, a transmission gear 6 and a transmission gear 2 5. The motor 7 is installed on the screening box 1, the transmission gear 6 is installed at the output end of the motor 7, and the transmission gear 2 5 is installed at the end of the rotating shaft 8 away from the connecting frame 21. The transmission gear 1 6 is engaged with the transmission gear 2 5 for transmission.

[0042] As another embodiment of the present invention, the stirring assembly includes a drive assembly 2, a stirring shaft 17 and a plurality of stirring paddles 20. The stirring shaft 17 is rotatably mounted on the screening box 1. One end of the stirring shaft 17 extends into the screening cylinder 19. The plurality of stirring paddles 20 are mounted on the stirring shaft 17. The drive assembly is used to drive the stirring shaft 17 to rotate.

[0043] In this embodiment, the drive assembly 2 includes a motor 2 14, a transmission gear 3 15 and a transmission gear 4 16. The motor 2 14 is installed on the screening box 1, the transmission gear 3 15 is installed at the output end of the motor 2 14, and the transmission gear 4 16 is installed at the end of the stirring shaft 17 away from the screening cylinder 19. The transmission gear 3 15 and the transmission gear 4 16 are engaged for transmission.

[0044] The screening drum 19 is provided with spiral blades 22. The screen drum is rotated by the drive assembly 1, and the bolt blades inside the screening drum drive the material to move from the feed port to the discharge port. During the movement, the material rolls as the screening drum rotates circumferentially, promoting the separation of materials of different particle sizes and effectively enhancing the screening effect of the material.

[0045] As another embodiment of the present invention, a material collecting box 9 is provided in the screening box 1 just below the screening cylinder 19 , and the upper end of the material collecting box 9 is open.

[0046] As another embodiment of the present invention, it also includes a dust collection mechanism, which includes a negative pressure fan 4 and a dust collection box. The negative pressure fan 4 is installed outside the screening box 1, and the dust collection box is installed inside the screening box 1. The negative pressure fan 4 is connected to the dust collection box through a connecting pipe 3.

[0047] Specifically, the dust collection box includes an upper box body 2, a lower box body 30 and several dust collection filter boxes 26. An air inlet 43 is provided on one side of the upper box body 2, and an air inlet space 42 is provided inside the upper box body 2. The top of the air inlet space 42 is provided with several rows of fixing holes 34, and the bottom of the fixing holes 34 is installed with permanent magnets 36. The top of the dust collection filter box 26 is provided with an iron block 35 that can be attracted by the permanent magnet 36. Several rows of storage holes 29 are provided at positions corresponding to the fixing holes 34 on the lower box body 30. After the dust collection filter box 26 is installed, the bottom of the box is flush with the upper end surface of the storage hole 29. After exceeding the set weight, the dust collection filter box 26 detaches from the fixing hole 34 and falls into the storage hole 29.

[0048] Specifically, the present invention absorbs dust in the air passing through the dust collection box through the dust collection filter box. Since the dust collection filter box's ability to absorb dust will decrease as the amount of dust absorbed increases, when the dust collection filter box absorbs a certain amount of dust, its ability to absorb dust basically reaches saturation, and when the dust reaches a certain level, the dust collection filter box will be blocked, affecting the smoothness of the air outlet, resulting in a greatly reduced dust collection effect.

[0049] In the above scheme, first, the dust filter boxes in the front row absorb and intercept most of the dust. When the dust filter boxes continuously absorb and intercept the dust in the air, their mass continues to increase. When the weight increases to a certain level (the dust absorption capacity of the dust filter boxes is close to saturation, and the dust absorption effect is greatly weakened), the gravity of the dust filter boxes plus the dust is greater than the combined force of the permanent magnet and the iron block, and the dust filter boxes fall into the storage hole. The dust filter boxes in the rear row can continue to ensure the absorption and interception of dust. Through the above scheme, on the one hand, it can ensure the interception of dust in the air passing through the dust removal room. On the other hand, the dust filter boxes with a dust absorption capacity close to saturation can fall into the storage hole in time, which will not affect the smoothness of the air outlet and ensure the dust collection effect.

[0050] Among them, in the actual production process, the air entering the dust suction filter box is not evenly distributed. If a traditional whole row of filters is used for filtering and dust removal, this will result in the left side of the filter being blocked by dust first due to the larger air flow on the left side of the filter, while the middle and right sides of the filter still have dust suction capabilities. However, a partially blocked filter will greatly affect the smoothness of air outlet, resulting in a greatly reduced dust removal effect. This solution uses multiple dust suction filter boxes to form multiple rows for dust suction. When the dust suction capacity of a certain dust suction filter box in the same row reaches saturation first, it can fall into the storage hole in time, and the remaining dust suction filter boxes in the same row as the dust suction filter box can still be used normally without the need to replace the entire row, which greatly improves the utilization rate of the dust suction filter box. Moreover, the present invention uses permanent magnets and iron blocks to fix the dust suction filter box, which can automatically determine whether the dust suction capacity of the dust suction filter box is close to saturation.

[0051] Specifically, the attraction force between the permanent magnet and the iron block in the present invention is equal to the weight of the dust filter box itself plus the weight of dust absorbed when its dust absorption capacity is close to saturation. The specific value can be obtained through experimentation and calculation. Of course, if the dust filter box is relatively light and the attraction force between the permanent magnet and the iron block is relatively large, a counterweight 28 can be added to the bottom of the dust filter box. The specific weight of the counterweight can be set according to actual conditions and will not be detailed here.

[0052] Among them, it should be noted that in order to prevent dust from passing through the lower end of the dust filter box and affecting the interception of dust, after the dust filter box is installed, the lower end of the dust filter box is flush with the upper end of the storage hole or a small section of the lower end of the dust filter box will enter the interior of the storage hole, which can effectively improve the dust interception effect; and, a partition 27 is provided between each row of adjacent two installation holes, the upper end of the partition 27 is connected to the top surface of the air inlet space, and the lower end is in contact with the upper end surface of the lower box body. When the dust filter box is installed, the two sides of the dust filter box are in contact with the partition to prevent dust from passing through the gap between the two adjacent dust filter boxes, thereby further improving the dust interception effect.

[0053] Among them, in this embodiment, since the dust filter box is fixed by the attraction of a permanent magnet and an iron block, and the attraction force between the permanent magnet and the iron block is not particularly large, this will result in the dust filter box being easily fallen off due to the shaking of the upper box body when it is placed in the fixing hole and assembled, affecting the normal installation. Therefore, in this solution, a number of positioning components are also provided on the dust box to limit and fix the dust filter box 26.

[0054] Specifically, the positioning assembly includes a movable connecting rod 24, a permanent magnetic ring 1 39, a permanent magnetic ring 2 38, a suction block 37 and several clamping rods 31. A movable cavity 25 is provided on the upper box body 2. The movable cavity 25 is connected with the fixed hole 34 through the mounting hole 32. The movable connecting rod 24 is movably installed in the movable cavity 25. Several clamping rods 31 are installed on the movable connecting rod 24. The clamping rod 31 is movably matched with the mounting hole 32. The upper end of the dust filter box 26 is provided with a clamping groove 33 that cooperates with the clamping rod 31. The permanent magnetic ring 1 39 and the permanent magnetic ring 2 38 are installed in the movable cavity 25 at intervals. The permanent magnetic ring 1 39 and the permanent magnetic ring 2 38 are movably fitted on the movable connecting rod 24. The suction block 37 is installed on the movable connecting rod 24. The suction block 37 is located between the permanent magnetic ring 1 39 and the permanent magnetic ring 2 38.

[0055] In the above scheme, when the upper shell and the lower shell are to be assembled after the dust filter box is installed in the fixing hole, the movable connecting rod is pushed to the left, so that the suction block on the movable connecting rod is attracted to the permanent magnetic ring 1, and the clamping rod in the installation hole enters the fixing hole and engages with the clamping groove on the dust filter box to form a limit for the dust filter box. When the upper box body and the lower box body are installed, the movable connecting rod is pulled to the right, so that the suction block on the movable connecting rod is attracted to the permanent magnetic ring 2, and the clamping rod is disengaged from the clamping groove.

[0056] The above description is merely a description of the preferred embodiment of the present invention and is not to be construed as limiting the scope of the claims. The present invention is not limited to the above embodiment, and variations in the specific structure are permitted. Any variations within the scope of the independent claims of the present invention are also within the scope of protection of the present invention.

Claims

1. A screening device for veterinary drug production, comprising a screening box (1) and a screening cylinder (19), wherein the screening cylinder (19) is installed inside the screening box (1); characterized in that: Also included are a supporting rolling assembly and a stirring assembly; The screening cylinder (19) is provided with a feed port (18) at one end and a discharge port (23) at the other end, and a sieve hole (10) is provided on the screening cylinder (19); The supporting rolling assembly comprises a driving assembly 1, a rotating shaft (8), a connecting frame (21), a supporting seat (11) and a roller (12); the connecting frame (21) is installed in the screening drum (19); one end of the rotating shaft (8) is connected to the connecting frame (21), and the other end is transmission-connected to the driving assembly; the supporting seat (11) is installed at the bottom of the screening box (1); the roller (12) is rotatably installed on the top of the supporting seat (11); and a guide rail (13) is provided on the screening drum (19) for rotating with the roller (12); The stirring component is used to stir the material inside the screening drum (19), and the rotation direction of the stirring component is opposite to the rotation direction of the screening drum (19); The device further comprises a dust collection mechanism, the dust collection mechanism comprising a negative pressure fan (4) and a dust collection box, the negative pressure fan (4) being installed outside the screening box (1), the dust collection box being installed inside the screening box (1), and the negative pressure fan (4) being connected to the dust collection box via a connecting pipe (3); The dust collection box comprises an upper box body (2), a lower box body (30) and a plurality of dust collection filter boxes (26), an air inlet (43) is provided on one side of the upper box body (2), an air inlet space (42) is provided inside the upper box body (2), a plurality of rows of fixing holes (34) are provided on the top of the air inlet space (42), a permanent magnet (36) is installed at the bottom of the fixing hole (34), an iron block (35) that can be attracted to the permanent magnet (36) is provided on the top of the dust collection filter box (26), a plurality of rows of receiving holes (29) are provided at positions corresponding to the fixing holes (34) on the lower box body (30), the bottom of the dust collection filter box (26) is flush with the upper end surface of the receiving hole (29) after the dust collection filter box (26) is installed, and the dust collection filter box (26) is separated from the fixing hole (34) and falls into the receiving hole (29) after exceeding a set weight; The dust collection box is also provided with a plurality of positioning components capable of limiting and fixing the dust collection filter box (26); The positioning assembly includes a movable connecting rod (24), a permanent magnetic ring 1 (39), a permanent magnetic ring 2 (38), an attraction block (37) and a plurality of clamping rods (31). The upper box body (2) is provided with a movable cavity (25). The movable cavity (25) is connected to the fixing hole (34) through the mounting hole (32). The movable connecting rod (24) is movably mounted in the movable cavity (25). The plurality of clamping rods (31) are mounted on the movable connecting rod (24). The clamping rod (31) is connected to the mounting hole ( 32) movable cooperation, the upper end of the dust filter box (26) is provided with a card slot (33) that cooperates with the card rod (31), the permanent magnetic ring 1 (39) and the permanent magnetic ring 2 (38) are installed in the movable cavity (25) at intervals, the permanent magnetic ring 1 (39) and the permanent magnetic ring 2 (38) are movably sleeved on the movable connecting rod (24), the suction block (37) is installed on the movable connecting rod (24), and the suction block (37) is located between the permanent magnetic ring 1 (39) and the permanent magnetic ring 2 (38).

2. A screening device for veterinary drug production according to claim 1, characterized in that: The driving assembly 1 comprises a motor 1 (7), a transmission gear 1 (6) and a transmission gear 2 (5); the motor 1 (7) is mounted on the screening box (1); the transmission gear 1 (6) is mounted on the output end of the motor 1 (7); the transmission gear 2 (5) is mounted on the end of the rotating shaft (8) away from the connecting frame (21); the transmission gear 1 (6) and the transmission gear 2 (5) are meshed and transmitted.

3. A screening device for veterinary drug production according to claim 1, characterized in that: The stirring assembly comprises a second driving assembly, a stirring shaft (17) and a plurality of stirring paddles (20). The stirring shaft (17) is rotatably mounted on the screening box (1). One end of the stirring shaft (17) extends into the screening cylinder (19). The plurality of stirring paddles (20) are mounted on the stirring shaft (17). The driving assembly is used to drive the stirring shaft (17) to rotate.

4. A screening device for veterinary drug production according to claim 3, characterized in that: The driving assembly 2 comprises a motor 2 (14), a transmission gear 3 (15) and a transmission gear 4 (16). The motor 2 (14) is mounted on the screening box (1), the transmission gear 3 (15) is mounted on the output end of the motor 2 (14), and the transmission gear 4 (16) is mounted on the end of the stirring shaft (17) away from the screening cylinder (19). The transmission gear 3 (15) and the transmission gear 4 (16) are meshed and transmitted.

5. The screening device for veterinary drug production according to claim 1, characterized in that: The screening cylinder (19) is provided with a spiral blade (22).

6. The screening device for veterinary drug production according to claim 1, characterized in that: A material collection box (9) is provided in the screening box (1) directly below the screening cylinder (19), and the upper end of the material collection box (9) is open.

Images