A tablet powder removal device for a tablet press

Abstract

This utility model discloses a tablet powder removal device for a tablet press, including a mounting frame. A feeding hopper is fixedly mounted on the mounting frame. A first conveyor belt group is provided at the output end of the feeding hopper. A second conveyor belt group is provided above the first conveyor belt group. Brushes are provided on the conveyor belts of the first and second conveyor belt groups. The second conveyor belt group rotates in opposite directions to the first conveyor belt group, with the second conveyor belt group rotating at a lower speed than the first conveyor belt group. A powder suction chamber and a powder collection box are fixedly mounted on the mounting frame. One side of the powder collection box is connected to the powder suction chamber through a pipe. An exhaust fan is provided on the side of the powder collection box away from the powder suction chamber. This utility model, by setting up the second and first conveyor belt groups with brushes, brushes away the powder from the tablets and promptly removes it through the powder suction chamber, reducing wear between tablets and the possibility of powder re-adheding to the tablets.

Description

Technical Field

[0001] This utility model belongs to the field of pharmaceutical equipment technology and relates to a tablet powder removal device for a tablet press. Background Technology

[0002] During tablet manufacturing, powder is compressed into tablets using a tablet press. After compression, some powder remains on the tablets. Before packaging, this powder needs to be removed using a powder removal device. Existing powder removal devices often use methods such as drum screens, but friction between tablets and between tablets and the equipment during the sieving process can generate more powder or cause powder to deposit on some tablets, affecting the powder removal efficiency. Utility Model Content

[0003] To address the aforementioned problems, this invention proposes a tablet de-powdering device for a tablet press, which effectively solves the problems in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A tablet powder removal device for a tablet press includes:

[0006] Mounting bracket, wherein the mounting bracket is frame-shaped;

[0007] A feed hopper, which is fixedly installed on the mounting frame;

[0008] A first conveyor belt group is installed at the output end of the feed hopper, and the conveyor belt of the first conveyor belt group is provided with bristles.

[0009] The second conveyor belt group is installed above the first conveyor belt group. The conveyor belt of the second conveyor belt group is provided with bristles. The second conveyor belt group rotates in the opposite direction to the first conveyor belt group. The speed of the second conveyor belt group is lower than that of the first conveyor belt group.

[0010] The powder suction chamber is fixedly installed on the mounting frame and is located below the upper conveyor belt of the first conveyor belt group. The first conveyor belt group has several powder removal holes.

[0011] A powder collection box is fixedly installed on the mounting frame. A filter plate is installed inside the powder collection box, and one side of the powder collection box is connected to the powder suction chamber through a pipe.

[0012] An exhaust fan is provided on the side of the powder collection box away from the powder suction chamber.

[0013] A discharge hopper is installed at the output end of the first conveyor belt group.

[0014] Optionally, a receiving area is provided on the side of the first conveyor belt group near the feed hopper, and the output end of the feed hopper is located directly above the receiving area.

[0015] Optionally, baffles are provided on both sides of the powder suction chamber, and the upper side of the first conveyor belt group and the lower side of the second conveyor belt group are located inside the baffles.

[0016] Optionally, the second conveyor belt assembly is provided with dust removal holes.

[0017] Optionally, the input end of the discharge hopper is provided with a toothed scraper, which is attached to the output end of the first conveyor belt group.

[0018] Optionally, the second conveyor belt assembly is fixedly connected with at least four adjusting bolts, which are slidably mounted on the mounting frame and are threaded with fixing nuts.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By setting up a second conveyor belt group with bristles to brush off the powder from the tablets and then sucking it away in time through the powder suction chamber, the wear between tablets and the possibility of powder re-adhering to the tablets are reduced.

[0021] 2. By setting baffles, the movement range of the tablets is limited between the first conveyor belt group and the second conveyor belt group, reducing the possibility of tablets falling off during the powder removal process;

[0022] 3. By setting adjustment bolts, the spacing between the second conveyor belt group and the first conveyor belt group can be easily adjusted to accommodate tablets of different thicknesses. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the conveyor belt section of an embodiment of the present invention.

[0026] Reference numerals: 1. Mounting frame; 21. Feed hopper; 211. Receiving area; 31. First conveyor belt group; 32. Second conveyor belt group; 321. Adjusting bolt; 322. Fixing nut; 41. Powder suction chamber; 411. Baffle plate; 42. Powder collection box; 43. Exhaust fan; 5. Discharge hopper; 51. Toothed scraper. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1 This invention discloses a tablet de-powdering device for a tablet press, comprising a mounting frame 1, which is frame-shaped. A feed hopper 21 is fixedly mounted on the mounting frame 1. A first conveyor belt group 31 is provided at the output end of the feed hopper 21. The first conveyor belt group 31 is fixedly mounted on the mounting frame 1. Bristles are provided on the conveyor belt of the first conveyor belt group 31. A second conveyor belt group 32 is provided above the first conveyor belt group 31, and bristles are provided on the conveyor belt of the second conveyor belt group 32. The second conveyor belt group 32 is connected to the first conveyor belt group 31. The belt group 31 rotates in the opposite direction. The speed of the second conveyor belt group 32 is lower than that of the first conveyor belt group 31. The mounting frame 1 is fixedly installed with a powder suction chamber 41 and a powder collection box 42. The powder suction chamber 41 is located on the upper side of the first conveyor belt group 31 and below the conveyor belt. The first conveyor belt group 31 has several powder removal holes. A filter plate is installed in the powder collection box 42. One side of the powder collection box 42 is connected to the powder suction chamber 41 through a pipe. An exhaust fan 43 is installed on the side of the powder collection box 42 away from the powder suction chamber 41. A discharge hopper 5 is installed at the output end of the first conveyor belt group 31.

[0029] Specifically, tablets are transported into the feed hopper 21 via a conveyor belt, and fall from the feed hopper 21 onto the first conveyor belt group 31. Driven by the brush bristles, they enter the space between the second conveyor belt group 32 and the first conveyor belt group 31. The second conveyor belt group 32 rotates in the opposite direction to the first conveyor belt group 31, meaning the upper part of the first conveyor belt group 31 and the lower part of the second conveyor belt group 32 move in the same direction, causing the tablets to move from the feed hopper 21 to the discharge hopper 5. The speed of the second conveyor belt group 32 is lower than that of the first conveyor belt group 31, allowing the brush bristles of both conveyor belt groups 32 and 31 to create a brushing effect on both ends of the tablets. A powder suction chamber 41 is located below the first conveyor belt group 31. The powder suction chamber 41, through a powder collection box 42 and an exhaust fan 43, creates negative pressure to promptly remove the brushed powder, which is then deposited in the powder collection box 42 through a filter plate.

[0030] In this way, by setting up a second conveyor belt group 32 with bristles and a first conveyor belt group 31, the powder on the tablets is brushed off and then sucked away in time by the powder suction chamber 41, reducing the wear between tablets and the possibility of powder re-adhering to the tablets.

[0031] In some feasible embodiments, the mounting frame 1 is a steel frame structure, with the feed hopper 21 fixed to one end of the mounting frame 1. A first conveyor belt group 31 is installed below the feed hopper 21. The first conveyor belt group 31 includes at least two rollers rotatably mounted on the mounting frame 1, each roller connected to a drive motor. Powder removal holes are provided on the conveyor belt of the first conveyor belt group 31 to facilitate powder suction by the powder suction chamber 41. The brush bristles can be flexible belt brushes glued to the conveyor belt. The second conveyor belt group 32 has the same structure as the first conveyor belt group 31. Simultaneously, two types of brush bristles of different lengths can be provided, staggered along the roller axis, forming multiple strip-shaped grooves above the first conveyor belt group 31. The short brush bristles of the first conveyor belt group 31 are opposite to the long brush bristles of the second conveyor belt group 32, thereby restricting the position of the tablets and reducing the possibility of tablet slippage along the roller axis during powder removal.

[0032] The powder suction chamber 41 is a rectangular box with an opening at the top, and the powder collection box 42 is a rectangular box. The filter plate divides the powder collection box 42 into two spaces, one of which is equipped with an exhaust fan 43, and the other is connected to the powder suction chamber 41 through a pipe. The exhaust fan 43 can be a fan installed in the powder suction chamber 41, or it can be a vacuum pump or other device that can generate negative pressure inside the powder collection box 42.

[0033] As a specific embodiment of the tablet powder removal device for a tablet press provided in the application, the first conveyor belt group 31 is provided with a receiving area 211 on the side near the feed hopper 21, and the output end of the feed hopper 21 is located directly above the receiving area 211.

[0034] Overall, by setting up the receiving area 211, the tablets fall into the receiving area 211 and enter between the first conveyor belt group 31 and the second conveyor belt group 32 as the first conveyor belt group 31 runs.

[0035] As another specific embodiment of the tablet powder removal device for a tablet press provided in the application, baffle plates 411 are provided on both sides of the powder suction chamber 41, and the upper side of the first conveyor belt group 31 and the lower side of the second conveyor belt group 32 are provided inside the baffle plates 411.

[0036] Based on the specific application scenario, by setting up a baffle plate 411, the movement range of the tablets is restricted between the first conveyor belt group 31 and the second conveyor belt group 32, reducing the possibility of tablets falling off during the powder removal process.

[0037] In some feasible ways, the baffle plate 411 is rectangular.

[0038] As one specific embodiment of the tablet powder removal device for a tablet press provided in the application, the second conveyor belt group 32 is provided with powder removal holes.

[0039] It should be understood that by setting the powder removal hole, it is convenient to clean the powder on the second conveyor belt group 32 when the powder suction chamber 41 is suctioning powder.

[0040] As a specific embodiment of the tablet powder removal device for a tablet press provided in the application, a toothed scraper 51 is provided at the input end of the discharge hopper 5, and the toothed scraper 51 is attached to the output end of the first conveyor belt group 31.

[0041] It should be understood that by setting the toothed scraper 51, it is convenient to scrape out the tablets that may be stuck in the brush bristles, so that the tablets fall into the discharge hopper 5.

[0042] In some feasible embodiments, the toothed scraper 51 includes a rectangular plate fixedly mounted to the mounting frame 1, the side of the rectangular plate near the first conveyor belt group 31 being configured as a comb tooth.

[0043] In some feasible embodiments, the output end of the second conveyor belt group 32 is also provided with a toothed scraper 51.

[0044] As one specific embodiment of the tablet de-powdering device for a tablet press provided in the application, the second conveyor belt group 32 is fixedly connected with at least four adjusting bolts 321, the adjusting bolts 321 are slidably installed on the mounting frame 1, and the adjusting bolts 321 are threadedly connected with fixing nuts 322.

[0045] It should be understood that by setting the adjusting bolt 321, the spacing between the second conveyor belt group 32 and the first conveyor belt group 31 can be adjusted to accommodate tablets of different thicknesses.

[0046] In some feasible configurations, a rectangular connecting block is installed at the end of the roller of the second conveyor belt group 32. An adjusting bolt 321 is fixedly installed at the lower part of the rectangular connecting block. The adjusting bolt 321 can slide through the mounting frame 1, and a fixing nut 322 provides support for the adjusting bolt 321. During adjustment, the height of the adjusting bolt 321 is adjusted by rotating the fixing nut 322 a suitable number of turns.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tablet dedusting device for a tablet press, characterized by, include: Mounting bracket (1), wherein the mounting bracket (1) is frame-shaped; Feed hopper (21), which is fixedly installed on the mounting frame (1); The first conveyor belt group (31) is installed at the output end of the feed hopper (21), and the conveyor belt of the first conveyor belt group (31) is provided with bristles. The second conveyor belt group (32) is installed above the first conveyor belt group (31). The conveyor belt of the second conveyor belt group (32) is provided with bristles. The second conveyor belt group (32) rotates in the opposite direction to the first conveyor belt group (31). The speed of the second conveyor belt group (32) is lower than that of the first conveyor belt group (31). The powder suction chamber (41) is fixedly installed on the mounting frame (1). The powder suction chamber (41) is located below the upper conveyor belt of the first conveyor belt group (31). The first conveyor belt group (31) has a plurality of powder removal holes. A powder collection box (42) is fixedly installed on the mounting frame (1). A filter plate is provided inside the powder collection box (42). One side of the powder collection box (42) is connected to the powder suction chamber (41) through a pipe. An exhaust fan (43) is provided on the side of the powder collection box (42) away from the powder suction chamber (41); The discharge hopper (5) is installed at the output end of the first conveyor belt group (31).

2. A tablet dedusting device for a tablet press according to claim 1, characterized in that: The first conveyor belt group (31) has a receiving area (211) on the side near the feed hopper (21), and the output end of the feed hopper (21) is located directly above the receiving area (211).

3. A tablet dedusting device for a tablet press according to claim 1, characterized in that: The powder suction chamber (41) is provided with baffles (411) on both sides, and the upper side of the first conveyor belt group (31) and the lower side of the second conveyor belt group (32) are located inside the baffles (411).

4. A tablet de-dusting device for a tablet press according to claim 1, characterized in that: The second conveyor belt group (32) has a powder removal hole.

5. A tablet de-dusting device for a tablet press according to claim 1, characterized in that: The input end of the discharge hopper (5) is provided with a toothed scraper (51), which is attached to the output end of the first conveyor belt group (31).

6. A tablet de-dusting device for a tablet press according to claim 1, characterized in that: The second conveyor belt assembly (32) is fixedly connected with at least four adjusting bolts (321), which are slidably mounted on the mounting bracket (1) and are threaded with fixing nuts (322).

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