Raw material screening device for tablet production

Abstract

The utility model relates to the technical field of raw material screening for tablet production, and discloses a raw material screening device for tablet production, which comprises a mounting frame, a fixing frame is fixedly connected to the bottom of the mounting frame, a separating mechanism is mounted at the top of the fixing frame, and a screening mechanism is mounted in the mounting frame; according to the raw material screening device for tablet production, a rotating cam continuously impacts a vibration block in an arc-shaped groove, at the moment, under cooperation of a spring, it is guaranteed that a screen groove can rapidly vibrate up and down with frequency under limiting of a stabilizer bar, and therefore a large number of raw materials in the screen groove can be rapidly screened; through cooperation of a simple mechanical structure, a stabilizing rod and a screen groove, high overall structural strength can be guaranteed, the efficient vibration screening effect can be achieved, and the problems that due to the weight, a screen plate is bent, a gap of the screen plate is too large, the screening quality is reduced, and meanwhile the screening efficiency is reduced are effectively solved.

Description

Technical Field

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

[0002] Raw material screening is crucial in tablet manufacturing. Its main purpose is to remove impurities from the raw materials, such as sand, dirt, and metal shavings, preventing these impurities from affecting tablet quality and causing problems like appearance defects, uneven hardness, and failure to meet disintegration time requirements. Simultaneously, screening allows for particle size classification of the raw materials, ensuring that the particle size meets the requirements of subsequent tableting processes, guaranteeing good tablet formation and uniform content, thereby ensuring the safety, efficacy, and stability of the drug.

[0003] The announcement number CN221674930U relates to a raw material screening device for tablet production. A motor drives a semi-circular block to rotate rapidly. With the help of springs, the screening box and fixed sleeve reciprocate with small amplitude up-and-down vibrations via an electric telescopic rod. Gears and a connecting shaft cause the screen plate to deflect and swing slightly between the fixed plates, achieving vibration screening of the raw materials. After screening, the motor is turned off and the screen box is raised by extending the electric telescopic rod. Gears control the screen plate to rotate counterclockwise significantly, creating large gaps to facilitate the discharge, reprocessing, and orderly, phased discharge of particulate matter.

[0004] The aforementioned device's screen plate flipping mechanism is only suitable for screening raw materials of a certain weight, resulting in limited screening efficiency. When a large batch of raw materials falls onto the screen plate and needs to be screened, the weight causes the screen plate to bend, leading to excessively large gaps and a decrease in screening quality and efficiency. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a raw material screening device for tablet production, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a raw material screening device for tablet production, comprising a mounting frame, a fixing frame fixedly connected to the bottom of the mounting frame, a separation mechanism installed on the top of the fixing frame, and a screening mechanism installed inside the mounting frame;

[0007] The screening mechanism includes a mounting base, which is fixedly connected to the bottom of a fixed frame. A sliding rod is fixedly connected to the bottom of the mounting base. A limit frame is slidably connected to the sliding rod near the top. A limit plate is fixedly connected to the bottom end of the sliding rod within the limit frame. A spring is sleeved on the top of the limit plate. A screen groove is fixedly connected to the bottom of the limit frame. Sliding blocks are fixedly connected to the four corners of the screen groove. A stabilizing rod is slidably connected to the middle of the sliding blocks. The top and bottom ends of the stabilizing rod are fixedly connected to the top and bottom of the mounting frame, respectively. Vibrating blocks are fixedly connected to both sides of the bottom of the screen groove. An arc-shaped groove is formed in the middle of the vibrating block. A cam is provided in the arc-shaped groove. A rotating rod is fixedly connected to the middle of the cam. Fixed plates are rotatably connected to both ends of the rotating rod. The top of the fixed plates is fixedly connected to both sides of the mounting frame.

[0008] Preferably, the bottom of the screen groove is provided with densely spaced through holes, and each of the four corners of the screen groove is provided with a mounting base.

[0009] Preferably, the rotating rod is fixedly connected to a first pulley near its front end, and the bottom of the cam is in contact with the bottom of the arc-shaped groove.

[0010] Preferably, the separation mechanism includes a separation shell, which is fixedly connected to the bottom of the fixed frame. A second separation roller and a first separation roller are rotatably connected to the left and right sides of the separation shell, respectively. A third pulley is fixedly connected to the second separation roller near its rear end. Gears are fixedly connected to the rear ends of both the first and second separation rollers. A fourth pulley is fixedly connected to the front end of the first separation roller.

[0011] Preferably, a second belt is provided between the fourth pulley and the first pulley, and the fourth pulley is connected to the first pulley via the second belt drive.

[0012] Preferably, a motor is fixedly connected to the top right side of the fixed frame, a second pulley is fixedly connected to the rear side of the motor, a first belt is provided between the second pulley and the third pulley, and the second pulley is connected to the third pulley through the first belt drive.

[0013] Compared with the prior art, the present invention provides a raw material screening device for tablet production, which has the following beneficial effects:

[0014] 1. This raw material screening device for tablet production, through a screening mechanism, allows a large quantity of raw materials to be fed into the separation shell. After processing within the separation shell, the raw materials fall onto the screen trough. At this point, the motor starts, and through the cooperation of the first pulley, the fourth pulley, and the second belt, the cam rotates. The rotating cam continuously impacts the vibrating block within the arc-shaped groove. With the help of springs, the screen trough can achieve rapid and frequencyd up-and-down vibration under the limit of the stabilizing rod. This allows for the rapid screening of large quantities of raw materials within the screen trough. The simple mechanical structure and the cooperation between the stabilizing rod and the screen trough ensure high overall structural strength and achieve efficient vibration screening. This effectively solves the problem that the weight of the screen plate can cause it to bend, resulting in excessively large gaps in the screen plate, which leads to a decrease in screening quality and efficiency.

[0015] 2. This raw material screening device for tablet production, through its separation mechanism, addresses the issue of caking due to the potential for agglomeration during long-term storage when a large quantity of raw materials is poured into the separation chamber. Upon entering the chamber, the motor activates the second and third pulleys, along with the first belt, to rotate the first separation roller. Further gear engagement then rotates the second separation roller, effectively separating and pulverizing the raw materials. This ensures better visibility for subsequent screening and significantly accelerates the screening efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of one side of the overall structure of this utility model;

[0018] Figure 2 This is a top view of the overall structure of this utility model;

[0019] Figure 3 A schematic diagram showing the coordination between the fixing frame, mounting frame, and screening mechanism;

[0020] Figure 4 This is a schematic diagram of one side of the screening facility;

[0021] Figure 5 This is a top view of the separated structure.

[0022] In the diagram: 1. Separation mechanism; 11. Motor; 12. Second pulley; 13. First belt; 14. Separation shell; 15. Gear; 16. Third pulley; 17. First separation roller; 171. Second separation roller; 18. Fourth pulley; 19. Second belt; 2. Mounting frame; 3. Fixing frame; 4. Screening mechanism; 41. Screen groove; 42. Vibrating block; 43. Cam; 431. Rotating rod; 432. Arc groove; 433. First pulley; 434. Fixing plate; 44. Spring; 45. Mounting seat; 46. Limiting frame; 47. Sliding rod; 471. Limiting piece; 48. Stabilizing rod; 49. Sliding block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] This utility model provides the following technical solution:

[0026] Example 1

[0027] Please see Figure 1-4 A raw material screening device for tablet production includes a mounting frame 2, a fixing frame 3 fixedly connected to the bottom of the mounting frame 2, a separation mechanism 1 installed on the top of the fixing frame 3, and a screening mechanism 4 installed inside the mounting frame 2.

[0028] The screening mechanism 4 includes a mounting base 45, which is fixedly connected to the bottom of the fixed frame 3. A sliding rod 47 is fixedly connected to the bottom of the mounting base 45. A limit frame 46 is slidably connected to the sliding rod 47 near the top. A limit piece 471 is fixedly connected to the bottom of the sliding rod 47 inside the limit frame 46. A spring 44 is sleeved on the top of the limit piece 471. A screen groove 41 is fixedly connected to the bottom of the limit frame 46. Sliding blocks 49 are fixedly connected to the four corners of the screen groove 41. A stabilizing rod 48 is slidably connected to the middle of the sliding blocks 49. The top and bottom of the stabilizing rod 48 are fixedly connected to the top and bottom of the mounting frame 2, respectively. Vibrating blocks 42 are fixedly connected to both sides of the bottom of the screen groove 41. An arc-shaped groove 432 is opened in the middle of the vibrating block 42. A cam 43 is set in the arc-shaped groove 432. A rotating rod 431 is fixedly connected to the middle of the cam 43. Fixed plates 434 are rotatably connected to both ends of the rotating rod 431. The top of the fixed plates 434 is fixedly connected to both sides of the mounting frame 2.

[0029] A large quantity of raw materials is fed into the separation shell 14 through the screening mechanism 4. After being processed in the separation shell 14, the raw materials fall onto the screen trough 41. At this time, the motor 11 starts, and with the cooperation of the first pulley 433, the fourth pulley 18 and the second belt 19, the cam 43 rotates. The rotating cam 43 continuously impacts the vibrating block 42 in the arc groove 432. With the cooperation of the spring 44, the screen trough 41 can achieve rapid and frequencyd up and down vibration under the limit of the stabilizing rod 48. This allows for the rapid screening of a large quantity of raw materials in the screen trough 41. The simple mechanical structure and the cooperation between the stabilizing rod 48 and the screen trough 41 ensure high overall structural strength and achieve efficient vibration screening. This effectively solves the problem that the screen plate may bend due to weight, resulting in excessive gaps in the screen plate, which leads to a decrease in screening quality and efficiency.

[0030] The bottom of the screen trough 41 is densely and evenly spaced with through holes, and each of the four corners of the screen trough 41 is provided with a mounting base 45.

[0031] The first pulley 433 is fixedly connected to the rotating rod 431 near the front end, and the bottom of the cam 43 is in contact with the bottom of the arc groove 432.

[0032] Example 2

[0033] Please see Figure 1-5 Furthermore, based on Embodiment 1, the separation mechanism 1 includes a separation shell 14, which is fixedly connected to the bottom of the fixed frame 3. A second separation roller 171 and a first separation roller 17 are rotatably connected to the left and right sides of the separation shell 14, respectively. A third pulley 16 is fixedly connected to the second separation roller 171 near its rear end. Gears 15 are fixedly connected to the rear ends of both the first separation roller 17 and the second separation roller 171. A fourth pulley 18 is fixedly connected to the front end of the first separation roller 17.

[0034] With the separation mechanism 1 in place, when a large batch of raw materials is poured into the separation shell 14, the raw materials may clump together during long-term storage. When the large batch of raw materials enters the separation shell 14, the motor 11 starts, and the second pulley 12, the third pulley 16 and the first belt 13 work together to rotate the first separation roller 17. At this time, with the help of the gear 15, the second separation roller 171 can also rotate, thereby separating and crushing the raw materials to ensure better visibility for subsequent screening and further accelerate the screening efficiency.

[0035] A second belt 19 is provided between the fourth pulley 18 and the first pulley 433, and the fourth pulley 18 is connected to the first pulley 433 through the second belt 19.

[0036] A motor 11 is fixedly connected to the top right side of the fixed frame 3. A second pulley 12 is fixedly connected to the rear side of the motor 11. A first belt 13 is provided between the second pulley 12 and the third pulley 16. The second pulley 12 is connected to the third pulley 16 through the first belt 13.

[0037] In actual operation, when this device is used, a large amount of raw materials are fed into the separation shell 14. After being processed in the separation shell 14, the raw materials fall onto the screen trough 41. At this time, the motor 11 starts, and with the cooperation of the first pulley 433, the fourth pulley 18 and the second belt 19, the cam 43 rotates. The rotating cam 43 continuously strikes the vibrating block 42 in the arc groove 432. With the cooperation of the spring 44, the screen trough 41 can achieve rapid and frequencyd up and down vibration under the limit of the stabilizing rod 48. This allows for the rapid screening of a large amount of raw materials in the screen trough 41. The simple mechanical structure and the cooperation between the stabilizing rod 48 and the screen trough 41 ensure high overall structural strength and achieve efficient vibration screening. This effectively solves the problem that the screen plate may bend due to weight, resulting in excessive gaps in the screen plate, which leads to a decrease in screening quality and efficiency.

[0038] When a large batch of raw materials is poured into the separation shell 14, the raw materials may clump together during long-term storage. When the large batch of raw materials enters the separation shell 14, the motor 11 starts, and the first separation roller 17 rotates with the cooperation of the second pulley 12, the third pulley 16 and the first belt 13. At this time, with the cooperation of the gear 15, the second separation roller 171 can also rotate, thereby separating and crushing the raw materials to ensure better visibility for subsequent screening and further speeding up the screening efficiency.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A raw material screening device for tablet production, comprising a mounting frame (2), characterized in that: The mounting frame (2) is fixedly connected to the bottom of the mounting frame (3), the top of the mounting frame (3) is equipped with a separation mechanism (1), and the mounting frame (2) is equipped with a screening mechanism (4). The screening mechanism (4) includes a mounting base (45), which is fixedly connected to the bottom of the fixing frame (3). A sliding rod (47) is fixedly connected to the bottom of the mounting base (45). A limiting frame (46) is slidably connected to the sliding rod (47) near the top. A limiting piece (471) is fixedly connected to the bottom of the sliding rod (47) inside the limiting frame (46). A spring (44) is sleeved on the top of the limiting piece (471) of the sliding rod (47). A screen groove (41) is fixedly connected to the bottom of the limiting frame (46). Sliding blocks (49) are fixedly connected to the four corners of the screen groove (41). The sliding block (49) is slidably connected to a stabilizing rod (48) in the middle. The top and bottom ends of the stabilizing rod (48) are fixedly connected to the top and bottom of the mounting frame (2) respectively. Vibrating blocks (42) are fixedly connected to both sides of the bottom of the screen groove (41). An arc groove (432) is opened in the middle of the vibrating block (42). A cam (43) is provided in the arc groove (432). A rotating rod (431) is fixedly connected in the middle of the cam (43). A fixing plate (434) is rotatably connected to both ends of the rotating rod (431). The top of the fixing plate (434) is fixedly connected to both sides of the mounting frame (2).

2. The raw material screening device for tablet production according to claim 1, characterized in that: The bottom of the sieve groove (41) is provided with densely spaced through holes, and each of the four corners of the sieve groove (41) is provided with a mounting base (45).

3. The raw material screening device for tablet production according to claim 1, characterized in that: The rotating rod (431) is fixedly connected to the first pulley (433) near the front end, and the bottom of the cam (43) is in contact with the bottom of the arc groove (432).

4. The raw material screening device for tablet production according to claim 1, characterized in that: The separation mechanism (1) includes a separation shell (14), which is fixedly connected to the bottom of the fixed frame (3). The left and right sides of the separation shell (14) are respectively rotatably connected to a second separation roller (171) and a first separation roller (17). The second separation roller (171) is fixedly connected to a third pulley (16) near the rear end. The rear ends of the first separation roller (17) and the second separation roller (171) are both fixedly connected to gears (15). The front end of the first separation roller (17) is fixedly connected to a fourth pulley (18).

5. The raw material screening device for tablet production according to claim 4, characterized in that: A second belt (19) is provided between the fourth pulley (18) and the first pulley (433), and the fourth pulley (18) is connected to the first pulley (433) through the second belt (19).

6. The raw material screening device for tablet production according to claim 4, characterized in that: A motor (11) is fixedly connected to the top right side of the fixed frame (3), and a second pulley (12) is fixedly connected to the rear side of the motor (11). A first belt (13) is provided between the second pulley (12) and the third pulley (16). The second pulley (12) is connected to the third pulley (16) through the first belt (13).

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