Multi-stage crushing and screening integrated machine for solid preparation production

Abstract

This invention provides a multi-stage pulverizing and sieving machine for solid dosage form production, comprising a housing and pulverizing and sieving components spaced apart within the housing. Several pulverizing and sieving components are arranged in a coordinated manner. This device uses the staggered arrangement of pulverizing and sieving components to cyclically pulverize large particles. The powdered material is guided out through a sieve plate, thereby improving the pulverizing and sieving effect and increasing work efficiency. At the lower end of the pulverizing chamber, a guide hopper guides the pulverized material to the side of the sieve plate away from the pulverizing chamber. A swing assembly controls the vibration of the sieve plate for sieving, which helps the powder pass through the sieve plate, while large particles continue to be guided to the second-stage pulverizing components, achieving multi-stage pulverizing and sieving.

Description

Technical Field

[0001] This utility model relates to the field of crushing and screening equipment technology, specifically a multi-stage crushing and screening integrated machine for solid dosage form production. Background Technology

[0002] In the preparation of solid dosage forms, drugs must first be pulverized and sieved before being processed into various dosage forms. For example, powders can be obtained by directly dispensing after uniform mixing with other components; granules can be obtained by granulating, drying, and dispensing the uniformly mixed materials; tablets can be prepared by compressing the prepared granules; and capsules can be prepared by dispensing the mixed powders or granules into capsules. Pulverization, sieving, and mixing are crucial operations to ensure the uniformity of drug content. A single pulverization of the drug will produce powders and granules of different sizes. To obtain materials of the target particle size, larger particles need to be screened out and re-pulverized. Because the sieving particle size is small, a large amount of material accumulates on the screen, easily causing blockage. Furthermore, multiple pulverization and sieving processes are cumbersome. Therefore, a multi-stage pulverizing and sieving integrated machine for solid dosage form production is needed. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a multi-stage pulverizing and sieving integrated machine for solid dosage form production, so as to solve the problems mentioned in the background art.

[0004] The technical problem solved by this utility model is achieved by the following technical solution: a multi-stage pulverizing and sieving integrated machine for solid dosage form production, including a housing and pulverizing components and sieving components installed at intervals in the housing, wherein a plurality of pulverizing components and sieving components are provided in cooperation;

[0005] The crushing component is installed on one side of the box, and a guide hopper is provided at the lower end of the crushing component. The crushed material is guided to the screening component through the guide hopper. A feed hopper is provided at the upper end of the box to introduce material into the crushing component.

[0006] The screening assembly includes a screen plate and a swing assembly for controlling the swing of the screen plate. The screen plate is inclined and a guide plate is provided on one side of the screen plate to guide large particles outward.

[0007] As a further embodiment of this utility model:

[0008] The crushing assembly includes a crushing box and a first crushing roller and a second crushing roller arranged in the crushing box. The upper end of the crushing box is provided with a guide plate to guide the material between the first crushing roller and the second crushing roller, and the guide hopper is arranged at the lower end of the crushing box.

[0009] As a further embodiment of this utility model:

[0010] The first and second crushing rollers are respectively mounted at corresponding positions in the crushing box via roller shafts. A synchronizing element is provided on the outer side of one end of the crushing box to control the synchronous rotation of the first and second crushing rollers, and a driving component is provided on the outer side of the other end to drive the first and second crushing rollers to move synchronously.

[0011] As a further embodiment of this utility model:

[0012] The synchronizing element includes a first transmission gear installed at the outer end of the first pulverizing roller and a second transmission gear installed at the outer end of the second pulverizing roller. A third transmission gear is also rotatably installed at a corresponding position at the outer end of the pulverizing box. The diameters of the first transmission gear and the second transmission gear are different. The first transmission gear is connected to the second transmission gear through the third transmission gear to achieve differential rotation of the first transmission gear and the second transmission gear, thereby improving the pulverizing effect of the first pulverizing roller and the second pulverizing roller on the drug.

[0013] As a further embodiment of this utility model:

[0014] The drive assembly includes a drive motor mounted on the outer end of the housing and a sprocket disposed on the outer end of the first crushing roller shaft. The drive motor is fixedly mounted on the housing via a frame, and a sprocket is fixedly mounted on the outer end of the drive motor's output shaft. The sprockets are connected to the sprockets on the outer ends of the roller shafts via chains, enabling the distributed crushing components to operate synchronously. The sprockets can be a double-row sprocket structure, allowing for staggered transmission between the sprockets via chains.

[0015] As a further embodiment of this utility model:

[0016] The lower end of the sieve plate is equipped with connecting parts, which are mounted on the plate frame. The two sides of the plate frame are elastically mounted on spring plates on the inner wall of the box, so that the sieve plate can swing. The connecting parts include connecting plates. The upper end of the connecting plate is rotatably mounted on the first connecting seat at the lower end of the sieve plate, and the lower end of the connecting plate is rotatably mounted on the second connecting seat of the plate frame, so that the sieve plate can swing back and forth. The two sides of the plate frame are respectively provided with spring rods. The spring rods are slidably inserted into the corresponding sliding holes of the spring plates, and springs are sleeved between the spring rods and the plate frame, so that the sieve plate can swing elastically.

[0017] As a further embodiment of this utility model:

[0018] The swing assembly includes a swing motor installed on the inner wall of the box. A first swing rod is fixedly installed on the outer end of the output shaft of the swing motor. A pull rod is rotatably connected to the outer end of the first swing rod and is rotatably connected to the screen plate through the pull rod, thereby pulling the screen plate to swing back and forth. The swing causes the material on the screen plate to vibrate, so as to facilitate the screening of the material.

[0019] As a further embodiment of this utility model:

[0020] The lower end of the box is provided with a first feeding hopper connected to a guide plate, and a second feeding hopper is provided on one side of the first feeding hopper to collect materials through a sieve plate.

[0021] Compared with existing technologies, the beneficial effects of this invention are as follows: This device uses staggered crushing and screening components to cyclically crush large particles of material. The powdered material is then guided out through the sieve plate, thereby improving the crushing and screening effect and increasing work efficiency. The lower end of the crushing chamber guides the crushed material to the side of the sieve plate away from the crushing chamber via a guide hopper. A swing assembly controls the vibration of the sieve plate, which helps the powder pass through the sieve plate, while large particles continue to be guided into the second-stage crushing component, achieving multi-stage crushing and screening. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0024] Figure 3 This is a partial cross-sectional view of the present invention.

[0025] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0026] Figure 5 for Figure 3 Enlarged structural diagram at point B;

[0027] The diagram shows the following components: 1. Box body; 2. Crushing box; 3. Screen plate; 4. Swing motor; 11. Feed hopper; 12. First discharge hopper; 13. Second discharge hopper; 21. Guide hopper; 22. First crushing roller; 23. Second crushing roller; 24. Guide plate; 25. First transmission gear; 26. Second transmission gear; 27. Third transmission gear; 28. Drive motor; 29. ​​Chain; 31. Guide plate; 32. Plate frame; 33. Spring plate; 34. Connecting plate; 35. First connecting seat; 36. Second connecting seat; 37. Spring rod; 38. Spring; 41. First swing rod; 42. Pull rod. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0029] like Figures 1-5 As shown,

[0030] This embodiment provides a multi-stage pulverizing and sieving integrated machine for solid dosage form production, including a housing 1 and pulverizing components and sieving components that are spaced apart and installed in the housing 1, wherein a plurality of pulverizing components and sieving components are provided in cooperation;

[0031] The crushing component is installed on one side of the housing 1. The lower end of the crushing component is provided with a guide hopper 21, and the crushed material is guided to the screening component through the guide hopper 21. The upper end of the housing 1 is provided with a feed hopper 11 for introducing material into the crushing component.

[0032] The screening assembly includes a screen plate 3 and a swing assembly for controlling the swing of the screen plate 3. The screen plate 3 is inclined and a guide plate 31 is provided on one side of the screen plate 3 to guide large particles outward.

[0033] In this embodiment, the crushing assembly includes a crushing box 2 and a first crushing roller 22 and a second crushing roller 23 disposed in the crushing box 2. The upper end of the crushing box 2 is provided with a guide plate 24 for guiding materials between the first crushing roller 22 and the second crushing roller 23, and a guide hopper 21 is disposed at the lower end of the crushing box 2.

[0034] The first crushing roller 22 and the second crushing roller 23 are respectively mounted at corresponding positions in the crushing box 2 via roller shafts. One side of the crushing box 2 is provided with a synchronizing element to control the synchronous rotation of the first crushing roller 22 and the second crushing roller 23, and the other side is provided with a driving component to drive the first crushing roller 22 and the second crushing roller 23 to move synchronously.

[0035] The synchronizing element includes a first transmission gear 25 installed at the outer end of the first pulverizing roller 22 and a second transmission gear 26 installed at the outer end of the second pulverizing roller 23. A third transmission gear 27 is also rotatably installed at a corresponding position at the outer end of the pulverizing box 2. The diameters of the first transmission gear 25 and the second transmission gear 26 are different. The first transmission gear 25 is connected to the second transmission gear 26 through the third transmission gear 27 to achieve differential rotation of the first transmission gear 25 and the second transmission gear 26, thereby improving the pulverizing effect of the first pulverizing roller 22 and the second pulverizing roller 23 on the drug.

[0036] The drive assembly includes a drive motor 28 mounted on the outer end of the housing 1 and a sprocket disposed on the outer end of the first crushing roller 22. The drive motor 28 is fixedly mounted on the housing 1 via a frame. The sprocket is fixedly mounted on the outer end of the output shaft of the drive motor 28 and is connected to the sprockets on the outer end of the roller shaft via chains 29, so that the distributed crushing components can operate synchronously. The sprockets can be a double-row sprocket structure to achieve staggered transmission between the sprockets via chains 29.

[0037] In this embodiment, the lower end of the sieve plate 3 is equipped with connecting members, which are mounted on the plate frame 32. The two sides of the plate frame 32 are elastically mounted on the spring plates 33 on the inner wall of the box body 1, so that the sieve plate 3 can be oscillating. The connecting members include a connecting plate 34. The upper end of the connecting plate 34 is rotatably mounted on the first connecting seat 35 at the lower end of the sieve plate 3, and the lower end of the connecting plate 34 is rotatably mounted on the second connecting seat 36 of the plate frame 32, so that the sieve plate 3 can swing back and forth. The two sides of the plate frame 32 are respectively provided with spring rods 37. The spring rods 37 are slidably inserted into the corresponding sliding holes of the spring plates 33, and a spring 38 is sleeved between the spring rods 37 and the plate frame 32 and the spring plates 33, so that the sieve plate 3 can be elastically oscillating.

[0038] The swing assembly includes a swing motor 4 installed on the inner wall of the housing 1. A first swing rod 41 is fixedly installed on the outer end of the output shaft of the swing motor 4. A pull rod 42 is rotatably connected to the outer end of the first swing rod 41 and is rotatably connected to the screen plate 3 through the pull rod 42, thereby pulling the screen plate 3 to swing back and forth. The swing causes the material on the screen plate 3 to vibrate, so as to facilitate the screening of the material.

[0039] In this embodiment, the lower end of the box body 1 is provided with a first feeding hopper 12 connected to the guide plate 31, and a second feeding hopper 13 is provided on one side of the first feeding hopper 12 to collect the material from the screen plate 3.

[0040] Specifically, the device uses staggered crushing and screening components to cyclically crush large particles. The powdered material is then guided out through the screen plate 3, thereby improving the crushing and screening effect and increasing work efficiency. The lower end of the crushing box 2 is guided by a guide hopper 21 to the side of the screen plate 3 away from the crushing box 2. A swing assembly controls the vibration of the screen plate 3 for screening, which helps the powder pass through the screen plate 3, while large particles continue to be guided into the second-stage crushing components, achieving multi-stage crushing and screening.

[0041] 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. It should be noted that, in this document, the use of relational terms such as "first" and "second" is merely used to distinguish one entity or operation from another, and does not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, 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. In the absence of further restrictions, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A multi-stage pulverizing and sieving integrated machine for solid dosage form production, characterized in that: It includes a housing (1) and a crushing component and a screening component installed at intervals inside the housing (1), wherein a plurality of crushing components and screening components are provided in cooperation; The crushing component is installed on one side of the box (1). The lower end of the crushing component is provided with a guide hopper (21), and the crushed material is guided to the screening component through the guide hopper (21). The upper end of the box (1) is provided with a feed hopper (11) for introducing material into the crushing component. The screening assembly includes a screen plate (3) and a swing assembly for controlling the swing of the screen plate (3). The screen plate (3) is inclined and a guide plate (31) is provided on one side of the screen plate (3) to guide large particles outward.

2. The multi-stage pulverizing and sieving integrated machine for solid dosage form production according to claim 1, characterized in that: The crushing assembly includes a crushing box (2) and a first crushing roller (22) and a second crushing roller (23) arranged in the crushing box (2). The upper end of the crushing box (2) is provided with a guide plate (24) to guide the material between the first crushing roller (22) and the second crushing roller (23). The guide hopper (21) is arranged at the lower end of the crushing box (2).

3. The multi-stage pulverizing and sieving integrated machine for solid dosage form production according to claim 2, characterized in that: The first crushing roller (22) and the second crushing roller (23) are respectively mounted on the corresponding positions of the crushing box (2) via roller shafts. One end of the crushing box (2) is provided with a synchronizing element to control the synchronous rotation of the first crushing roller (22) and the second crushing roller (23), and the other end is provided with a driving component to drive the first crushing roller (22) and the second crushing roller (23) to move synchronously.

4. The multi-stage pulverizing and sieving integrated machine for solid dosage form production according to claim 3, characterized in that: The synchronizing element includes a first transmission gear (25) installed at the outer end of the first crushing roller (22) and a second transmission gear (26) installed at the outer end of the second crushing roller (23). A third transmission gear (27) is also rotatably installed at the corresponding position at the outer end of the crushing box (2). The diameters of the first transmission gear (25) and the second transmission gear (26) are not the same. The first transmission gear (25) is connected to the second transmission gear (26) through the third transmission gear (27) to realize differential rotation of the first transmission gear (25) and the second transmission gear (26).

5. The multi-stage pulverizing and sieving integrated machine for solid dosage form production according to claim 4, characterized in that: The drive assembly includes a drive motor (28) installed at the outer end of the housing (1) and a sprocket set at the outer end of the first crushing roller (22) shaft. The drive motor (28) is fixedly installed on the housing (1) by a frame. The output shaft of the drive motor (28) is fixedly installed with a sprocket, and is connected to the sprocket at the outer end of the roller shaft by a chain (29) so that the crushing components arranged in a distributed manner can move synchronously.

6. The multi-stage pulverizing and sieving integrated machine for solid dosage form production according to claim 1, characterized in that: The lower end of the sieve plate (3) is provided with connecting parts, which are installed on the plate frame (32) through the connecting parts. The two sides of the plate frame (32) are elastically installed on the spring plate (33) on the inner wall of the box (1) so that the sieve plate (3) can be swayed. The connecting parts include a connecting plate (34). The upper end of the connecting plate (34) is rotatably installed on the first connecting seat (35) at the lower end of the sieve plate (3), and the lower end of the connecting plate (34) is rotatably installed on the second connecting seat (36) of the plate frame (32) so that the sieve plate (3) can swing back and forth. The two sides of the plate frame (32) are respectively provided with spring rods (37). The spring rods (37) are slidably inserted into the corresponding sliding holes of the spring plate (33), and a spring (38) is sleeved between the spring rods (37) and the spring plate (33) so that the sieve plate (3) can be swayed elastically.

7. The multi-stage pulverizing and sieving integrated machine for solid dosage form production according to claim 6, characterized in that: The swing assembly includes a swing motor (4) installed on the inner wall of the housing (1). A first swing rod (41) is fixedly installed on the outer end of the output shaft of the swing motor (4). A pull rod (42) is rotatably connected to the outer end of the first swing rod (41), and is rotatably connected to the screen plate (3) through the pull rod (42), thereby pulling the screen plate (3) to swing back and forth.

8. The multi-stage pulverizing and sieving integrated machine for solid dosage form production according to claim 1, characterized in that: The lower end of the box (1) is provided with a first feeding hopper (12) connected to the guide plate (31), and a second feeding hopper (13) is provided on one side of the first feeding hopper (12) to collect the material through the screen plate (3).

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