A screening device for tablet production

Abstract

This utility model relates to the field of tablet production technology and discloses a screening device for tablet production, including a processing frame. A feed hopper is fixedly connected to the upper end of the processing frame, and a frame door is hinged to one side of the processing frame. A screening cylinder is horizontally arranged at the top of the processing frame. A cleaning component for cleaning the screening cylinder is arranged on the side wall of the frame door near the screening cylinder. When the servo motor drives the screening cylinder to rotate left and right, the outer wall of the screening cylinder and the bristles of the cleaning brush generate relative friction. The bristles will naturally embed into the screen holes of the screening cylinder, pushing out the tablet fragments or tiny particles stuck in the holes, and simultaneously cleaning the powder adhering to the surface of the cylinder wall, realizing synchronous cleaning during the screening process. Cleaning can be completed without stopping the machine, ensuring continuous production. Moreover, dynamic cleaning is achieved by utilizing the rotation of the screening cylinder itself, without the need for an additional power source, which simplifies the structure and improves the cleaning efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tablet manufacturing technology, specifically to a screening device for tablet manufacturing. Background Technology

[0002] Drugs are substances used to prevent, treat, and diagnose human diseases, to purposefully regulate human physiological functions, and which have specified indications or functions, usage, and dosage. Tablets are a form of drug, usually referring to tablet-shaped drugs. During the production of tablets, some tablets may clump, stick together, or break due to manufacturing and processing reasons. Therefore, screening devices are needed to screen them and separate out unqualified drugs.

[0003] Existing equipment has some drawbacks during use. For example, during tablet screening, tablets may get stuck in the sieve holes, making cleaning difficult. The sieve holes are prone to clogging, leading to a decrease in screening efficiency. Micropowder, debris, or irregular edges on the tablet surface can easily get stuck in the sieve holes. As the screening time increases, the number of blocked holes gradually increases, reducing the effective screening area. This not only reduces the screening speed but may also cause qualified tablets to be misjudged as unqualified products, resulting in waste of raw materials. Traditional equipment requires production to be stopped and the screening cylinder to be manually disassembled for cleaning when cleaning the sieve holes, interrupting the continuous production process. Especially in large-scale production, frequent shutdowns significantly reduce production efficiency and increase labor costs. Utility Model Content

[0004] The purpose of this invention is to provide a screening device for tablet production, which solves the problem that tablets get stuck in the screen holes during screening, making cleaning inconvenient and causing the screen holes to become clogged, resulting in a decrease in screening efficiency.

[0005] This utility model provides the following technical solution: a screening device for tablet production, including a processing frame, a feeding hopper fixedly connected to the upper end face of the processing frame, a frame door hinged to one side of the processing frame, a screening cylinder horizontally arranged at the top of the processing frame, a feeding port opened on the side wall of the screening cylinder, both ends of the screening cylinder being rotatably connected to the side wall of the processing frame, one end of the screening cylinder passing through the side wall of the processing frame and a servo motor fixedly connected to the end, a rotating rod horizontally arranged below the screening cylinder, both ends of the rotating rod being rotatably connected to the side wall of the processing frame, a material distribution plate fixedly sleeved on the outer wall of the rotating rod, one end of the rotating rod passing through the side wall of the processing frame and a drive assembly connected to the end, a guide plate and a waste guide plate symmetrically fixed on the vertical sides of the bottom of the processing frame, and a cleaning assembly for cleaning the screening cylinder arranged on the side wall of the frame door near the screening cylinder.

[0006] As a preferred embodiment of the above technical solution, the driving assembly includes a driving gear fixedly sleeved on the outer wall of the rotating rod, a cylinder fixedly installed on the outer wall of the processing frame, a connecting plate fixedly installed on the piston end of the cylinder, a rack fixedly connected to the top of the connecting plate, the rack meshing with the driving gear for transmission, a limiting groove being formed on the outer wall of the processing frame, a limiting slider fixedly connected to the outer wall of the rack, and the limiting slider slidingly connected to the limiting groove.

[0007] As a preferred embodiment of the above technical solution, the cleaning component includes a limiting rectangular frame fixedly installed on the side wall of the frame door, a cleaning brush inserted inside the limiting rectangular frame, guide blocks fixedly connected to the outer walls of the opposite sides of the cleaning brush, guide grooves adapted to the guide blocks being opened on the inner walls of the opposite sides of the limiting rectangular frame, and multiple return springs arrayed and fixed on the inner wall of the limiting rectangular frame, with the other end of the return spring fixed to the inner wall of the cleaning brush.

[0008] As a preferred embodiment of the above technical solution, a hot air blower is fixedly installed on the outer wall of the processing frame, and the air outlet of the hot air blower extends to the inner side of the processing frame.

[0009] As a preferred embodiment of the above technical solution, a temperature sensor is fixedly installed on the outer wall of the processing frame, and the measuring end of the temperature sensor extends to the inner side of the processing frame.

[0010] As a preferred embodiment of the above technical solution, the servo motor, cylinder, hot air blower, and temperature sensor are all electrically connected to an external controller.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, when the servo motor drives the screening cylinder to rotate back and forth, the outer wall of the screening cylinder and the bristles of the cleaning brush generate relative friction. The bristles will naturally embed into the screen holes of the screening cylinder, pushing out the tablet fragments or tiny particles stuck in the holes, while simultaneously cleaning the powder adhering to the surface of the cylinder wall. This achieves synchronous cleaning during the screening process, and cleaning can be completed without stopping the machine, ensuring continuous production. Furthermore, dynamic cleaning is achieved by utilizing the rotation of the screening cylinder itself, eliminating the need for an additional power source, which simplifies the structure while improving cleaning efficiency. Attached Figure Description

[0012] Figure 1 A first-view three-dimensional structural diagram of a screening device for tablet production; Figure 2 A second-view three-dimensional structural diagram of a screening device for tablet production; Figure 3 A cross-sectional schematic diagram of a screening device for tablet production; Figure 4 A schematic diagram of the exploded structure of the cleaning component.

[0013] In the diagram: 1. Processing frame; 11. Feed hopper; 12. Frame door; 13. Screening cylinder; 14. Feed inlet; 15. Servo motor; 16. Rotating rod; 17. Distributing plate; 18. Guide plate; 19. Waste guide plate; 2. Drive assembly; 21. Drive gear; 22. Cylinder; 23. Connecting plate; 24. Rack; 25. Limiting slide groove; 26. Limiting slider; 3. Cleaning assembly; 31. Limiting rectangular frame; 32. Cleaning brush; 33. Guide block; 34. Guide groove; 35. Return spring; 41. Hot air blower; 42. Temperature sensor. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example

[0015] like Figures 1-4 As shown, this utility model provides a technical solution: a screening device for tablet production, including a processing frame 1, a feed hopper 11 fixedly connected to the upper end of the processing frame 1, a frame door 12 hinged to one side of the processing frame 1, a screening cylinder 13 horizontally arranged at the top inside the processing frame 1, a feeding port 14 opened on the side wall of the screening cylinder 13, both ends of the screening cylinder 13 being rotatably connected to the side wall of the processing frame 1, one end of the screening cylinder 13 passing through the side wall of the processing frame 1 and a servo motor 15 fixedly connected to the end. A rotating rod 16 is horizontally arranged below the 13, with both ends of the rotating rod 16 rotatably connected to the side wall of the processing frame 1. A material distribution plate 17 is fixedly sleeved on the outer wall of the rotating rod 16. One end of the rotating rod 16 passes through the side wall of the processing frame 1 and is connected to the drive assembly 2. A guide plate 18 and a waste guide plate 19 are symmetrically fixed on the vertical sides of the bottom of the processing frame 1. A cleaning assembly 3 for cleaning the screening cylinder 13 is provided on the side wall of the frame door 12 near the screening cylinder 13. In actual use, the tablets to be screened are passed through... The tablets are slowly poured into the processing frame 1 through the feed hopper 11. They fall through the feed hopper 11 and the conveyor 14 into the horizontally rotating screening cylinder 13. The servo motor 15 is activated to drive the screening cylinder 13 to rotate left and right (the rotation angle is less than 90°), thus moving the medicine within the screening cylinder and accelerating the screening speed. Qualified tablets (meeting the size requirements of the screening cylinder 13's sieve holes) fall through the sieve holes to the distribution plate 17 below, and then are guided into the collection area via the guide plate 18. Then, the drugs are packaged or processed. Substandard drugs are stored in the screening cylinder 13. The drive assembly 2 drives the material distribution plate 17 to rotate, so that the discharge end of the material distribution plate 17 faces the waste guide plate 19. The servo motor 15 drives the screening cylinder 13 to rotate 180° (at this time, the material inlet 14 on the screening cylinder 13 is vertically downward). Then, the substandard drugs are guided by the material distribution plate 17 to the waste guide plate 19, and the substandard drugs are guided by the waste guide plate 19 to the waste collection area.

[0016] As one implementation method in this embodiment, such as Figure 2 As shown, the drive assembly 2 includes a drive gear 21 fixedly sleeved on the outer wall of the rotating rod 16. A cylinder 22 is fixedly installed on the outer wall of the processing frame 1. A connecting plate 23 is fixedly installed on the piston end of the cylinder 22. A rack 24 is fixedly connected to the top of the connecting plate 23. The rack 24 meshes with the drive gear 21 for transmission. A limiting groove 25 is opened on the outer wall of the processing frame 1. A limiting slider 26 is fixedly connected to the outer wall of the rack 24. The limiting slider 26 is slidably connected to the limiting groove 25. In specific use, when it is necessary to guide qualified tablets to the collection area, the cylinder 22 is in the extended state. At this time, the rack 24 drives the drive gear 21 to maintain a specific angle. The tilt direction of the distribution plate 17 corresponds to the guide plate 18. After the qualified tablets fall through the sieve holes of the sieve cylinder 13, they slide along the tilt surface of the distribution plate 17 to the guide plate 18 and finally enter the qualified product collection area. When it is necessary to process unqualified tablets in the sieve cylinder 13... When the cylinder 22 is activated, its piston end drives the connecting plate 23 to retract, thereby driving the rack 24 to move synchronously in the horizontal direction. Since the rack 24 meshes with the drive gear 21, the linear motion of the rack 24 is converted into the rotational motion of the drive gear 21, which in turn drives the rotating rod 16 and the distribution plate 17 to rotate. During this process, the limiting slider 26 on the outer side of the rack 24 slides along the limiting groove 25 on the outer wall of the processing frame 1 to ensure that the rack 24 always maintains a horizontal movement trajectory and avoids transmission jamming or angle deviation caused by meshing offset. When the distribution plate 17 rotates to the point where the discharge end corresponds to the waste guide plate 19, the cylinder 22 stops moving and the distribution plate 17 maintains this angle. At this time, the servo motor 15 drives the screening cylinder 13 to rotate 180°, so that the conveying port 14 is vertically downward. The unqualified tablets are discharged from the screening cylinder 13, slide along the distribution plate 17 to the waste guide plate 19, and finally enter the waste collection area to complete the discharge.

[0017] As one implementation method in this embodiment, such as Figure 4As shown, the cleaning assembly 3 includes a limiting rectangular frame 31 fixedly installed on the side wall of the frame door 12. A cleaning brush 32 is inserted into the inner side of the limiting rectangular frame 31. Guide blocks 33 are fixedly connected to the outer walls of the opposite sides of the cleaning brush 32. Guide grooves 34 adapted to the guide blocks 33 are opened on the inner walls of the opposite sides of the limiting rectangular frame 31. Multiple return springs 35 are fixedly arranged in an array on the inner wall of the limiting rectangular frame 31. The other end of the return spring 35 is fixed to the inner wall of the cleaning brush 32. In actual use, when the device is in normal screening operation, the frame door 12 is in the closed state. At this time, the cleaning brush 32 is in the return spring. Under the elastic thrust of the spring 35, its bristles are tightly attached to the outer wall of the sieve cylinder 13. When the servo motor 15 drives the sieve cylinder 13 to rotate back and forth (angle less than 90°), the outer wall of the sieve cylinder 13 and the bristles of the cleaning brush 32 generate relative friction. The bristles will naturally embed into the sieve holes of the sieve cylinder 13, pushing out the tablet fragments or tiny particles stuck in the holes, while cleaning the powder adhering to the surface of the cylinder wall. This achieves synchronous cleaning during the sieving process. Dynamic cleaning is achieved by using the rotation of the sieve cylinder 13 itself, without the need for an additional power source. This simplifies the structure while improving cleaning efficiency.

[0018] A hot air blower 41 is fixedly installed on the outer wall of the processing frame 1, with the air outlet of the hot air blower 41 extending to the inner side of the processing frame 1. A temperature sensor 42 is fixedly installed on the outer wall of the processing frame 1, with the measuring end of the temperature sensor 42 extending to the inner side of the processing frame 1. The servo motor 15, cylinder 22, hot air blower 41, and temperature sensor 42 are all electrically connected to an external controller. In the entire process of sieving, distributing, and cleaning, the components work together in a coordinated manner through the controller. When the servo motor 15 drives the sieving cylinder 13 to rotate and sieve, the hot air blower 41 works synchronously. The hot air can ensure the dryness of the medicine. When the cleaning component 3 cleans the sieving cylinder 13, the suitable temperature environment can reduce the probability of tablet fragments sticking to the sieve holes or brush bristles due to moisture, thus improving the cleaning effect.

[0019] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A screening device for tablet production, comprising a treatment frame (1), characterized in that: A feed hopper (11) is fixedly connected to the upper end of the processing frame (1). A frame door (12) is hinged to one side of the processing frame (1). A screening cylinder (13) is horizontally arranged at the top inside the processing frame (1). A feeding port (14) is opened on the side wall of the screening cylinder (13). Both ends of the screening cylinder (13) are rotatably connected to the side wall of the processing frame (1). One end of the screening cylinder (13) passes through the side wall of the processing frame (1) and is fixedly connected to a servo motor (15). A horizontally arranged [feature / feature] is located below the screening cylinder (13). A rotating rod (16) is rotatably connected to the side wall of the processing frame (1) at both ends. A material distribution plate (17) is fixedly sleeved on the outer wall of the rotating rod (16). One end of the rotating rod (16) passes through the side wall of the processing frame (1) and is connected to a drive assembly (2). A guide plate (18) and a waste guide plate (19) are symmetrically fixed on the vertical sides of the bottom of the processing frame (1). A cleaning assembly (3) for cleaning the screening cylinder (13) is provided on the side wall of the frame door (12) near the screening cylinder (13).

2. A screening device for tablet production as claimed in claim 1, characterized in that: The drive assembly (2) includes a drive gear (21) fixedly sleeved on the outer wall of the rotating rod (16). A cylinder (22) is fixedly installed on the outer wall of the processing frame (1). A connecting plate (23) is fixedly installed on the piston end of the cylinder (22). A rack (24) is fixedly connected to the top of the connecting plate (23). The rack (24) meshes with the drive gear (21) for transmission. A limiting groove (25) is opened on the outer wall of the processing frame (1). A limiting slider (26) is fixedly connected to the outer wall of the rack (24). The limiting slider (26) is slidably connected to the limiting groove (25).

3. A screening device for tablet production as claimed in claim 2, characterized in that: The cleaning component (3) includes a limiting rectangular frame (31) fixedly installed on the side wall of the frame door (12). A cleaning brush (32) is inserted inside the limiting rectangular frame (31). Guide blocks (33) are fixedly connected to the outer walls of the two opposite sides of the cleaning brush (32). Guide grooves (34) adapted to the guide blocks (33) are opened on the inner walls of the two opposite sides of the limiting rectangular frame (31). Multiple reset springs (35) are fixedly arranged on the inner wall of the limiting rectangular frame (31). The other end of the reset spring (35) is fixed to the inner wall of the cleaning brush (32).

4. A screening device for tablet production as claimed in claim 3, characterized in that: A hot air blower (41) is fixedly installed on the outer wall of the processing frame (1), and the air outlet of the hot air blower (41) extends to the inner side of the processing frame (1).

5. A screening device for tablet production as claimed in claim 4, characterized in that: A temperature sensor (42) is fixedly installed on the outer wall of the processing frame (1), and the measuring end of the temperature sensor (42) extends to the inner side of the processing frame (1).

6. A screening device for tablet production as claimed in claim 5, characterized in that: The servo motor (15), cylinder (22), hot air blower (41) and temperature sensor (42) are all electrically connected to an external controller.

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