Medicine vibrating screen
By adopting a rotating screen cylinder and unblocking pipe design in the drug vibrating screen, the problem of downtime caused by screen hole blockage is solved, and stable and efficient drug screening and continuous operation are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-03-31
AI Technical Summary
Existing pharmaceutical vibrating screens require shutdown and screen replacement when the screen holes become clogged, affecting screening efficiency.
The design incorporates a rotating screen cylinder, a venting pipe, and a venting nozzle. By changing the position of the screen cylinder and backflushing the screen holes, the screening capacity can be restored, thus avoiding the impact of clogging.
It achieves stable and efficient screening of medicines using a vibrating screen, enabling continuous operation and avoiding downtime for maintenance due to screen blockage.
Smart Images
Figure CN224057956U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vibrating screen technology, and in particular to a pharmaceutical vibrating screen. Background Technology
[0002] A vibrating screen is a type of mechanical equipment widely used in industrial fields for tasks such as material grading, screening, desliming, and dewatering. Its core working principle is to use mechanical vibration generated by a vibrating motor or exciter to cause materials to be thrown, jumped, or slid on the screen surface, thereby achieving the purpose of separation according to particle size.
[0003] During pharmaceutical production, it is necessary to separate drugs of different particle sizes. Currently, most pharmaceutical vibrating screens used in existing technologies are flat screen structures. When the screen holes become clogged, the machine needs to be stopped and the screen replaced to maintain stable screening operations, which affects operational efficiency. Therefore, this utility model proposes a pharmaceutical vibrating screen to address the shortcomings of existing technologies. Utility Model Content
[0004] To address the aforementioned problems, the purpose of this utility model is to provide a pharmaceutical vibrating screen. By setting a rotating screen cylinder on the frame, screening can be performed by utilizing different positions of the screen cylinder, thereby ensuring that the vibrating screen has a stable and efficient vibrating screening capability and will not affect the screening effect due to screen cylinder blockage.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A pharmaceutical vibrating screen includes a movable guide rail, a screen cylinder, and a collection trough. Two sets of movable guide rails are symmetrically arranged, and a frame is slidably mounted on the two sets of movable guide rails. The screen cylinder is rotatably mounted inside the frame. A crossbeam is provided between the rear ends of the two sets of movable guide rails, and springs are provided on the crossbeam. Multiple sets of springs are provided, one end of which is connected to the rear side wall of the lower end of the frame. A drive rod is rotatably mounted between the front ends of the two sets of movable guide rails, and cams are provided on the drive rod. Multiple sets of cams are provided, and their positions are adapted to the positions of the frame. A collection trough is provided inside the frame below the screen cylinder.
[0007] A further improvement is that a main shaft is rotatably provided on one side of the upper part of the machine frame, and a hollow shaft is fixedly provided on the other side of the upper part of the machine frame. One end of the screen cylinder is fixedly connected to one end of the main shaft, and the other end of the screen cylinder is rotatably connected to the hollow shaft.
[0008] A further improvement is that: a first motor is provided on the frame, the main shaft is driven to rotate by the first motor, one end of the hollow shaft extends into the inside of the screen cylinder, and the other end of the hollow shaft extends to one side of the frame.
[0009] A further improvement is that: a blocking pipe is provided on one side of the upper end of the screen cylinder, and a blocking nozzle is provided on the blocking pipe. Multiple sets of blocking nozzles are provided, and the multiple sets of blocking nozzles are inclined and facing the screen cylinder.
[0010] A further improvement is that the length of the collection trough is greater than the width of the screen in the sieve cylinder, and support columns are provided on both the front and rear ends of the collection trough.
[0011] A further improvement is that a second motor is provided on one side of the moving guide rail, and the drive rod is driven by the second motor.
[0012] A further improvement is that: the collection tank is provided with a ramp plate inside, the collection tank is provided with a collection port at the front end, and a valve plate is movably provided inside the collection port.
[0013] The beneficial effects of this utility model are as follows: By setting a rotating screen cylinder on the frame, this utility model can perform screening by utilizing different positions of the screen cylinder, thereby ensuring that the vibrating screen has a stable and efficient vibrating screening capability and will not affect the screening effect due to screen cylinder blockage.
[0014] This invention enables back-blowing of the sieve cylinder's holes by setting up a venting pipe and a venting nozzle, blowing out the medicine particles that are blocking the sieve cylinder's holes, thus restoring the sieve cylinder's screening capacity and enabling the vibrating screen to achieve continuous screening operations. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;
[0016] Figure 2 This is a side view of the collection tank structure of this utility model.
[0017] The components are: 1. Moving guide rail; 2. Screen cylinder; 3. Collection tank; 4. Frame; 5. Crossbeam; 6. Spring; 7. Drive rod; 8. Cam; 9. Main shaft; 10. Hollow shaft; 11. First motor; 12. Unblocking pipe; 13. Unblocking nozzle; 14. Support column; 15. Second motor; 16. Collection port; 17. Valve plate. Detailed Implementation
[0018] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model. Example 1
[0019] according to Figure 1-2As shown in the figure, this embodiment proposes a pharmaceutical vibrating screen, including a movable guide rail 1, a screen cylinder 2, and a collection trough 3. Two sets of movable guide rails 1 are symmetrically arranged, and a frame 4 is slidably mounted on the two sets of movable guide rails 1. The screen cylinder 2 is rotatably mounted inside the frame 4. A crossbeam 5 is provided between the rear ends of the two sets of movable guide rails 1, and springs 6 are provided on the crossbeam 5. Multiple sets of springs 6 are provided, with one end connected to the lower rear side wall of the frame 4. A drive rod 7 is rotatably mounted between the front ends of the two sets of movable guide rails 1. Cams 8 are provided on the drive rod 7, and multiple sets of cams 8 are provided, their positions adapted to the positions of the frame 4. The collection trough 3 is provided inside the frame 4 below the screen cylinder 2. A second motor 15 is provided on one side of the movable guide rail 1, and the drive rod 7 is driven by the second motor 15.
[0020] When the pharmaceutical vibrating screen of this utility model is in use, after the second motor 15 is started, it drives the drive rod 7 to rotate. Then, the multiple sets of cams 8 on the drive rod 7 synchronously squeeze the frame 4, causing the frame 4 to move backward on the two sets of moving guide rails 1 and simultaneously squeeze the spring 6. When the cam 8 rotates out of the squeezing position, it releases the squeezing on the frame 4, causing the frame 4 to move in the opposite direction under the action of the spring 6 until it is squeezed by the cam 8 again. The repeated action causes the frame 4 to move back and forth repeatedly. At this time, the medicine inside the screen cylinder 2 is screened. When the screening capacity of the current screening surface of the screen cylinder 2 decreases, the first motor 11 is started to control the rotation angle of the screen cylinder 2, so that the next screening surface can be screened.
[0021] A main shaft 9 is rotatably mounted on one side of the upper interior of the frame 4, and a hollow shaft 10 is fixedly mounted on the other side of the upper interior of the frame 4. One end of the sieve cylinder 2 is fixedly connected to one end of the main shaft 9, and the other end of the sieve cylinder 2 is rotatably connected to the hollow shaft 10. A first motor 11 is mounted on the frame 4, and the main shaft 9 is driven to rotate by the first motor 11. One end of the hollow shaft 10 extends into the interior of the sieve cylinder 2, and the other end of the hollow shaft 10 extends to one side of the frame 4. In this invention, the hollow shaft 10 can serve as a feeding channel for medicines to enter the sieve cylinder 2 for sieving. Example 2
[0022] according to Figure 1-2As shown in the figure, this embodiment proposes a pharmaceutical vibrating screen, including a movable guide rail 1, a screen cylinder 2, and a collection trough 3. Two sets of movable guide rails 1 are symmetrically arranged, and a frame 4 is slidably mounted on the two sets of movable guide rails 1. The screen cylinder 2 is rotatably mounted inside the frame 4. A crossbeam 5 is provided between the rear ends of the two sets of movable guide rails 1. A spring 6 is provided on the crossbeam 5. Multiple sets of springs 6 are provided, and one end of each set of springs 6 is connected to the rear side wall of the lower end of the frame 4. A drive rod 7 is rotatably mounted between the front ends of the two sets of movable guide rails 1. A cam 8 is provided on the drive rod 7. Multiple sets of cams 8 are provided, and the positions of the multiple sets of cams 8 are adapted to the positions of the frame 4. The collection trough 3 is provided inside the frame 4 below the screen cylinder 2.
[0023] A venting pipe 12 is provided on one side of the upper end of the screen cylinder 2. A venting nozzle 13 is provided on the venting pipe 12. Multiple sets of venting nozzles 13 are provided, and these multiple sets of venting nozzles 13 are inclined and face towards the screen cylinder 2. This invention, by setting up the venting pipe 12 and venting nozzles 13, allows the venting pipe 12 to be connected to an external high-pressure air source when the sieving surface of the screen cylinder 2 that is blocked rotates to the position of the venting nozzle 13. The high-pressure air source then blows through the venting nozzle 13 onto the blocked sieving surface of the screen cylinder 2, thus clearing the blockage.
[0024] The length of the collection trough 3 is greater than the width of the screen in the sieve cylinder 2, and support columns 14 are provided on both the front and rear ends of the collection trough 3. This arrangement ensures that all the medicine sieved by the sieve cylinder 2 can enter the collection trough 3.
[0025] The collection trough 3 is equipped with a ramp inside, and a collection port 16 is provided at the front end of the collection trough 3. A valve plate 17 is movably installed inside the collection port 16. This configuration facilitates the centralized collection of medicines within the collection trough 3. In this invention, the sieve cylinder 2 has an opening, making it easy to remove the medicines trapped inside the sieve cylinder 2.
[0026] This invention features a rotating screen cylinder 2 mounted on the frame 4. By utilizing different positions of the screen cylinder 2 for sieving, the vibrating screen can maintain a stable and efficient sieving capacity, preventing sieving effects from being affected by blockage of the screen cylinder 2. Furthermore, by installing a venting pipe 12 and a venting nozzle 13, the invention enables back-blowing of the screen holes in the screen cylinder 2, expelling the medicine particles blocking the screen holes and restoring the sieving capacity of the screen cylinder 2. This allows the vibrating screen to perform continuous sieving operations.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A pharmaceutical product vibrating sieve, characterized by: Including mobile guide rail (1), screen cylinder (2) and collection groove (3), two groups of mobile guide rail (1) are symmetrically provided, the rack (4) is slidably arranged on two groups of mobile guide rail (1), the screen cylinder (2) is rotatably arranged in the rack (4), the crossbeam (5) is arranged between the rear ends of two groups of mobile guide rail (1), the spring (6) is arranged on the crossbeam (5), the spring (6) is provided with multiple groups, one end of multiple groups of spring (6) is connected with the lower rear side wall of rack (4), the drive rod (7) is rotatably arranged between the front ends of two groups of mobile guide rail (1), the cam (8) is arranged on the drive rod (7), the cam (8) is provided with multiple groups, the setting position of multiple groups of cam (8) is adapted to the position of rack (4), the collection groove (3) is arranged in the rack (4) below the screen cylinder (2).
2. The pharmaceutical product vibrating sieve according to claim 1, characterized in that: The main shaft (9) is rotatably arranged on one side of the upper part of the rack (4), the hollow shaft (10) is fixedly arranged on the other side of the upper part of the rack (4), one end of the screen cylinder (2) is fixedly connected with one end of the main shaft (9), the other end of the screen cylinder (2) is rotatably connected with the hollow shaft (10).
3. The pharmaceutical product vibrating sieve according to claim 2, characterized in that: The first motor (11) is arranged on the rack (4), the main shaft (9) is driven to rotate by the first motor (11), one end of the hollow shaft (10) extends into the screen cylinder (2), and the other end of the hollow shaft (10) extends to one side of the rack (4).
4. The pharmaceutical product vibrating sieve according to claim 1, characterized in that: The through plug pipe (12) is arranged on one side of the upper end of the screen cylinder (2), the through plug tuyere (13) is arranged on the through plug pipe (12), the through plug tuyere (13) is provided with multiple groups, and multiple groups of through plug tuyere (13) are inclinedly arranged and face the screen cylinder (2).
5. The drug product sieve shaker of claim 1, wherein: The length of the collection groove (3) is greater than the screen width of the screen cylinder (2), and the support column (14) is arranged on both sides of the front and rear ends of the collection groove (3).
6. The drug product sieve shaker of claim 1, wherein: The second motor (15) is arranged on one side of the mobile guide rail (1), and the drive rod (7) is driven by the second motor (15).
7. The drug product sieve shaker of claim 1, wherein: The collection groove (3) is provided with a slope plate, the collection groove (3) is provided with a collection port (16) at the front end, and the valve plate (17) is movably arranged in the collection port (16).