A medicine dust treatment unit, device and method for a pharmaceutical tablet press

Abstract

The invention discloses a medicine dust processing unit, device and method for a pharmaceutical tablet press in the technical field of tablet presses, comprising a fixed block in the shape of a regular polygon; medicine dust collecting mechanisms, the number of which is the same as the number of sides of the fixed block and which are respectively installed on the sides of the fixed block and are used to wrap and sweep a punch; a pushing mechanism, which is used to push the medicine dust collecting mechanism rotated to the bottom of the punch and wrap the punch; a driving mechanism, which is connected to the medicine dust collecting mechanism and is used to drive the medicine dust collecting mechanism to rotate and sweep and collect residual medicine powder at the bottom of the punch when the medicine dust collecting mechanism wraps the punch; a dust hood, which accommodates the fixed block and is rotatably connected to the middle part of the fixed block through a first rotating shaft and is used to absorb the medicine powder on the medicine dust collecting mechanism that is moved into the inner cavity of the dust hood; and a driving member, which is used to drive the first rotating shaft to rotate.

Description

Technical Field

[0001] The invention relates to the technical field of tablet presses, and in particular to a drug dust processing unit, a device and a method for a pharmaceutical tablet press. Background Art

[0002] Tablets are generally made by tableting. During tableting, the powder is placed in the forming hole of the lower die, and then the punch of the upper die rotates to the specified position and moves downward to squeeze the powder in the forming hole. After the tablet is pressed, the ejector rod in the lower die pushes the tablet out. During the process of punching the powder, powder will adhere to the bottom of the punch.

[0003] Cleaning the bottom of the punch of a pharmaceutical tablet press is crucial to the production of powder tablets. In the prior art, the punch is mostly cleaned by brush cleaning, such as a rotary tablet pressing mechanism disclosed in patent CN219427550U. In addition, a large amount of drug dust will be generated during the cleaning of the punch. The traditional treatment of drug dust generated in production mainly captures the escaped drug dust in the production environment by negative pressure adsorption, such as the drug dust recovery device used in the production process disclosed in patent CN208626888U. However, the above-mentioned drug dust treatment method is difficult to remove the drug dust mixed in the air. Summary of the invention

[0004] The object of the present invention is to provide a drug dust treatment unit, device and method for a pharmaceutical tablet press to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drug dust processing unit of a pharmaceutical tablet press, comprising: a fixed block, which is a regular polygonal shape; drug dust collecting mechanisms, the number of which is the same as the number of sides of the fixed block and are respectively installed on the sides of the fixed block, for wrapping and sweeping the punch; a pushing mechanism, which is used to push the drug dust collecting mechanism directly below the punch to wrap the punch; a driving mechanism, which is connected to the drug dust collecting mechanism, and is used to drive the drug dust collecting mechanism to rotate and sweep and collect the residual drug powder at the bottom of the punch when the drug dust collecting mechanism wraps the punch; a dust hood, which accommodates the fixed block and is rotatably connected to the middle part of the fixed block through a first rotating shaft, and is used to absorb the drug powder on the drug dust collecting mechanism that is moved into the inner cavity of the dust hood; and a driving member, which is used to drive the first rotating shaft to rotate.

[0006] As a further solution of the present invention, the drug dust collection mechanism is movably connected to the fixed block through a support block, the support block is rotatably connected to the fixed block, and a first torsion spring is mounted on the rotating shaft of the support block; a first bevel gear is fixedly connected to the rotating shaft of the support block, and a second bevel gear that can mesh with the first bevel gear is fixedly connected to the dust cover; the first bevel gear and the second bevel gear are both incomplete gears.

[0007] As a further solution of the present invention, the pushing mechanism includes a wedge block, which is fixedly connected to the dust hood and is used to drive the medicine dust collecting mechanism to rotate relative to the support block.

[0008] As a further solution of the present invention, the drug dust collection mechanism is composed of a mounting plate, a rotating block and bristles, the mounting plate is composed of a rotating rod and an end head, the rotating rod is rotatably connected to the support block, the rotating block is rotatably connected to the end head, the top of the rotating block is densely covered with bristles, and a second torsion spring is fixedly connected to the rotating shaft of the rotating block.

[0009] As a further solution of the present invention, the driving mechanism includes a first winding roller and a second winding roller; the first winding roller is fixedly mounted on the rotating shaft of the rotating block; the second winding roller is rotatably connected to the support block; a first traction rope is wound around the second winding roller, and the first traction rope passes through the support block and the mounting plate at one end away from the second winding roller and extends into the mounting plate and is fixedly connected to the first winding roller; a third gear is fixedly connected to the rotating shaft of the second winding roller, and a rack bar capable of meshing with the third gear is fixedly connected to the dust cover; the rack bar is located on the side of the second bevel gear; a ratchet is also fixedly connected to the rotating shaft of the second winding roller, a pawl is arranged on the side of the ratchet, a slider is rotatably mounted on the pawl, a third torsion spring is mounted on the rotating shaft of the pawl, the slider is elastically slidably connected to the support block, a second traction rope is fixedly connected to the slider, and a push rod is fixedly connected to the end of the second traction rope away from the slider, the push rod is slidably connected to the support block, a wedge-shaped push block capable of driving it to move is arranged on the side of the push rod, and the wedge-shaped push block is fixedly connected to the wedge block.

[0010] As a further solution of the present invention, the driving member includes a friction wheel, and the friction wheel is drivingly connected to a turntable of the tablet press.

[0011] A drug dust treatment device for a pharmaceutical tablet press comprises a drug dust treatment unit and a dust collector, wherein the dust collector is arranged at the side of the drug dust treatment unit and is used for absorbing drug dust on the surface of a turntable when the tablet press presses tablets.

[0012] The invention discloses a method for treating medicine dust of a pharmaceutical tablet press, which adopts a medicine dust treating device to recover the dust during tablet pressing for reuse.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention is provided with the first rotating shaft of the dust suction cover, the fixed block, the medicine dust collecting mechanism, the pushing mechanism, the driving mechanism and the driving member. The driving member can drive the medicine dust collecting mechanism to rotate with the turntable through the first rotating shaft and the fixed block. After the medicine dust collecting mechanism rotates to the bottom of the punch, the pushing mechanism can push the medicine dust collecting mechanism upward so that the medicine dust collecting mechanism wraps the bottom end of the punch. At the same time, the driving mechanism can drive the medicine dust collecting mechanism wrapping the punch to rotate. The medicine dust collecting mechanism can sweep off the medicine powder attached to the bottom of the punch, so as to avoid the accumulation of medicine powder at the bottom of the punch, and the production quality of the tablets can be better guaranteed; and after the medicine dust collecting mechanism wraps the punch, the medicine powder can fall to the inner side of the medicine dust collecting mechanism, so as to prevent the medicine powder from floating in the air; multiple medicine dust collecting mechanisms can intermittently perform the cleaning work of the punch, so as to greatly reduce the working pressure of the medicine dust collecting mechanism; when the medicine dust collecting mechanism rotates to the inside of the dust suction cover, the fan arranged in the dust suction cover can suck away the medicine powder on the medicine dust collecting mechanism, so as to avoid the accumulation of medicine powder on the surface of the medicine dust collecting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the drug dust treatment unit of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the drug dust processing unit of the present invention (top view);

[0017] Figure 3 It is a schematic cross-sectional view of part of the structure of the present invention;

[0018] Figure 4 It is a cross-sectional schematic diagram of the ratchet, pawl and related structures of the present invention;

[0019] Figure 5 It is a schematic diagram of the structure of the drug dust treatment device of the present invention;

[0020] Figure 6 It is a schematic diagram of the structure of the medicinal material processing device and the tablet press of the present invention.

[0021] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0022] 1-dust hood, 2-first rotating shaft, 3-fixed block, 4-medicine dust collecting mechanism, 5-support block, 6-first bevel gear, 7-second bevel gear, 8-wedge block, 9-mounting plate, 10-rotating block, 11-bristles, 12-first winding roller, 13-second winding roller, 14-first traction rope, 15-third gear, 16-rack rod, 17-ratchet, 18-pawl, 19-slider, 20-second traction rope, 21-push rod, 22-wedge push block, 23-friction wheel, 24-turntable, 25-vacuum cleaner. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 6 The present invention provides a technical solution: a drug dust processing unit of a pharmaceutical tablet press, characterized in that it includes a dust hood 1, a first rotating shaft 2, a fixed block 3, a drug dust collecting mechanism 4, a pushing mechanism, a driving mechanism and a driving member; the fixed block 3 is a regular polygon; the number of drug dust collecting mechanisms 4 is the same as the number of side edges of the fixed block 3 and they are respectively installed on the side edges of the fixed block 3 for wrapping and sweeping the punch; the pushing mechanism is used to push the drug dust collecting mechanism 4 that is rotated to the bottom of the punch to wrap the punch; the driving mechanism is connected to the drug dust collecting mechanism 4 for driving the drug dust collecting mechanism 4 to rotate and sweep and collect the residual drug powder at the bottom of the punch when the drug dust collecting mechanism 4 wraps the punch; the dust hood 1 accommodates the fixed block 3 and is rotatably connected to the middle part of the fixed block 3 through the first rotating shaft 2, for adsorbing the drug powder on the drug dust collecting mechanism 4 that is moved into the inner cavity of the dust hood 1; the driving member includes a friction wheel 23, and the friction wheel 23 is drivingly connected to the turntable 24 of the tablet press.

[0025] like Figure 1 , Figure 5 and Figure 6 As shown, the drug dust processing unit is installed on the side of the tablet press. The tablet press works clockwise. After the drug powder is added to the forming hole of the tablet press, the punch moves downward to press the drug powder into tablets; then the punch moves upward to the top of the forming hole; while the tablet press is working, the turntable 24 on the lower mold drives the friction wheel 23 to rotate, and the friction wheel 23 drives the fixed block 3 and the drug dust collecting mechanism 4 to rotate synchronously through the first rotating shaft 2; multiple drug dust collecting mechanisms 4 are distributed in a circular array about the first rotating shaft 2, such as Figure 5As shown, during the circular rotation of the punch driven by the tablet press after the tablet pressing work is completed, the punch will contact the medicine dust collecting mechanism 4 located at the rear side; after the medicine dust collecting mechanism 4 rotates to the bottom of the punch, the pushing mechanism can push the medicine dust collecting mechanism 4 upward to wrap the punch. Since the linear speed of the turntable 24 and the friction wheel 23 are the same, the linear speed of the punch is less than the linear speed of the turntable 24, and the linear speed of the medicine dust collecting mechanism 4 is greater than the linear speed of the friction wheel 23, the linear speed of the medicine dust collecting mechanism 4 is greater than the linear speed of the punch, and the medicine dust collecting mechanism 4 and the punch can produce relative movement, and when the tablet press rotates clockwise, the frontmost punch and the rearmost medicine dust collecting mechanism 4 both move to the left, which can improve the medicine dust collecting mechanism The driving mechanism can drive the medicine dust collecting mechanism 4 wrapped around the punch to rotate, and the medicine dust collecting mechanism 4 can sweep off the medicine powder attached to the bottom of the punch, so as to avoid the accumulation of medicine powder at the bottom of the punch, and can better ensure the quality of tablet production; and after the medicine dust collecting mechanism 4 wraps the punch, the medicine powder can fall to the inside of the medicine dust collecting mechanism 4, so as to prevent the medicine powder from floating in the air, and multiple medicine dust collecting mechanisms 4 can intermittently perform the cleaning work of the punch, which can greatly reduce the working pressure of the medicine dust collecting mechanism 4, and when the medicine dust collecting mechanism 4 rotates to the inside of the dust hood 1, the fan arranged in the dust hood 1 can suck away the medicine powder on the medicine dust collecting mechanism 4, so as to avoid the accumulation of medicine powder on the surface of the medicine dust collecting mechanism 4; Figure 6 As shown, when producing two-color tablets, two medicine dust processing units can be set, and the two medicine dust processing units respectively process the two colors of medicine powder attached to the bottom of the punch, which can avoid the mixing of tablet colors when producing two-color tablets.

[0026] Specifically, Figure 2 As shown, the drug dust collecting mechanism 4 is movably connected to the fixed block 3 through the support block 5, the support block 5 is rotatably connected to the fixed block 3, and a first torsion spring is mounted on the rotating shaft of the support block 5; a first bevel gear 6 is fixedly connected to the rotating shaft of the support block 5, and a second bevel gear 7 that can mesh with the first bevel gear 6 is fixedly connected to the dust cover 1; the first bevel gear 6 and the second bevel gear 7 are both incomplete gears.

[0027] The second bevel gear 7 is arranged on the front side of the dust hood 1. When the tablet press rotates clockwise, the first rotating shaft 2 will drive the supporting block 5 and the medicine dust collecting mechanism 4 to rotate counterclockwise through the fixing block 3. When the supporting block 5 drives the first bevel gear 6 to move to the far left, the first bevel gear 6 starts to mesh with the second bevel gear 7. Then, when the supporting block 5 continues to rotate counterclockwise, under the action of the second bevel gear 7, the first bevel gear 6 starts to rotate, and the first bevel gear 6 will drive the supporting block 5 and the medicine dust collecting mechanism 4 to rotate synchronously; the first bevel gear 6 is arranged as an incomplete gear, and the maximum rotation angle of the first bevel gear 6, the supporting block 5 and the medicine dust collecting mechanism 4 is 180°. After the medicine dust collecting mechanism 4 rotates to face downward and before the first bevel gear 6 is disengaged from the second bevel gear 7, the medicine dust collecting mechanism 4 will always remain in a state of facing downward; Figure 2 As shown, after the first rotating shaft 2 drives the medicine dust collecting mechanism 4 to rotate to the leftmost side, the medicine dust collecting mechanism 4 starts to rotate; when the medicine dust collecting mechanism 4 moves to the frontmost side, the medicine dust collecting mechanism 4 rotates 180° downward and maintains it; until the medicine dust collecting mechanism 4 rotates to the rightmost side, the first bevel gear 6 and the second bevel gear 7 are disengaged, and the support block 5 drives the medicine dust collecting mechanism 4 to flip back to the state facing upward under the elastic force of the first torsion spring; then when the medicine dust collecting mechanism 4 moves to the rearmost side, the medicine dust collecting mechanism 4 contacts the bottom of the punch and starts the cleaning work of the punch; through the arrangement of the support block 5, the first bevel gear 6 and the second bevel gear 7, the medicine dust collecting mechanism 4 can rotate 180° during the cyclic rotation after completing the work of cleaning the punch, and the medicine dust collecting mechanism 4 can face downward. The medicine powder that can fall on the medicine dust collecting mechanism 4 falls into the dust hood 1 under the action of gravity and is collected, which can avoid the accumulation of medicine powder on the medicine dust collecting mechanism 4 and affect the work of the medicine dust collecting mechanism 4. At the same time, the recovered medicine powder can be reused to improve the utilization rate of the medicine powder.

[0028] Specifically, Figure 2 and Figure 6 As shown, the pushing mechanism includes a wedge block 8, which is fixedly connected to the dust hood 1 and is used to drive the medicine dust collecting mechanism 4 to rotate relative to the supporting block 5.

[0029] When the medicine dust collecting mechanism 4 rotates to the rearmost side, the medicine dust collecting mechanism 4 will rotate upward under the action of the wedge block 8, and the end of the medicine dust collecting mechanism 4 that contacts the punch will lift upward, which can increase the friction force when the medicine dust collecting mechanism 4 and the punch move relative to each other after contacting, thereby improving the cleaning effect of the medicine dust collecting mechanism 4 on the punch.

[0030] Specifically, Figure 2-Figure 4As shown, the drug dust collecting mechanism 4 is composed of a mounting plate 9, a rotating block 10 and bristles 11. The mounting plate 9 is composed of a rotating rod and an end. The rotating rod is rotatably connected to the support block 5, and the rotating block 10 is rotatably connected to the end. The top of the rotating block 10 is densely covered with bristles 11; a second torsion spring is fixedly connected to the rotating shaft of the rotating block 10; the driving mechanism includes a first winding roller 12 and a second winding roller 13; the first winding roller 12 is fixedly mounted on the rotating shaft of the rotating block 10; the second winding roller 13 is rotatably connected to the support block 5; a first traction rope 14 is wound around the second winding roller 13, and the first traction rope 14 passes through the support block 5 and the mounting plate 9 at one end away from the second winding roller 13 and extends into the mounting plate 9 and is fixedly connected to the first winding roller 12; the second winding roller 1 A third gear 15 is fixedly connected to the rotating shaft of 3, and a rack rod 16 that can mesh with the third gear 15 is fixedly connected to the dust cover 1; the rack rod 16 is located on the side of the second bevel gear 7; a ratchet 17 is also fixedly connected to the rotating shaft of the second winding roller 13, and a pawl 18 is provided on the side of the ratchet 17. A slider 19 is rotatably installed on the pawl 18, and a third torsion spring is set on the rotating shaft of the pawl 18. The slider 19 is elastically slidably connected to the support block 5, and a second traction rope 20 is fixedly connected to the slider 19. The second traction rope 20 is fixedly connected to a push rod 21 at one end away from the slider 19. The push rod 21 is slidably connected to the support block 5, and a wedge-shaped push block 22 that can drive it to move is provided on the side of the push rod 21, and the wedge-shaped push block 22 is fixedly connected to the wedge block 8.

[0031] When the first rotating shaft 2 drives the supporting block 5 to rotate to the frontmost side, the supporting block 5 flips 180°, and at this time the third gear 15 rotates to an upward state and meshes with the rack rod 16; then when the first rotating shaft 2 continues to drive the supporting block 5 and the third gear 15 to rotate counterclockwise, the rack rod 16 will drive the third gear 15 to rotate, and the third gear 15 will drive the second winding roller 13 to rotate, and when the second winding roller 13 rotates to rewind the first traction rope 14, the other end of the first traction rope 14 will drive the first winding roller 12 to rotate synchronously, and the first winding roller 12 will drive the rotating block 10 and the bristles 11 to rotate and twist the second torsion spring. The second torsion spring here can be replaced by a ruler spring; at this time, the rotating block 10 and the bristles 11 rotate to a downward state, and the first winding roller 12 drives the rotating block 10 and the bristles 11 to rotate, which can make the powder that falls between the bristles 11 fall off better, and can better avoid the accumulation of powder on the rotating block 10 and the bristles 11; it should be noted that, Figure 4As shown, under the action of the rack rod 16, the second winding roller 13 will drive the ratchet 17 to rotate synchronously when it rotates. When the pawl 18 is engaged with the ratchet 17, the second winding roller 13 can only rotate in one direction, that is, when the third gear 15 is out of engagement with the rack rod 16, the pawl 18 will limit the ratchet 17; when the support block 5 drives the dust collecting mechanism 4 to rotate to the rearmost side, the wedge-shaped push block 22 will drive the push rod 21 to move toward the side close to the support block 5, and the push rod 21 will drive the slider 19 and the pawl 18 to move away from the ratchet 17 through the second traction rope 20, and the pawl 18 cancels the ratchet 1 7; then the second torsion spring can drive the first winding roller 12 to rotate and wind up the first traction rope 14 under the action of elastic force; the rotation of the first winding roller 12 will drive the rotating block 10 and the bristles 11 to rotate synchronously. Since the bristles 11 are in contact with the bottom surface of the punch at this time, the rotation of the rotating block 10 and the bristles 11 can better sweep away the powder attached to the bottom surface of the punch, and can better avoid the accumulation of powder at the bottom of the punch, thereby ensuring the quality of tablet production; the rotating rod at one end of the mounting plate 9 close to the support block 5 can be set to a shape with a certain curvature during actual application, so that the bristles 11 can better wrap the punch.

[0032] A drug dust treatment device for a pharmaceutical tablet press comprises a drug dust treatment unit and a dust collector 25. The dust collector 25 is arranged at the side of the drug dust treatment unit and is used to absorb drug dust on the surface of a turntable 24 when the tablet press presses tablets.

[0033] like Figure 5 and Figure 6 As shown, a vacuum cleaner 25 is arranged on the side of the drug dust treatment unit. The drug powder that falls onto the surface of the tablet press turntable 24 after being swept by the drug dust collecting mechanism 4, the drug powder that is scattered onto the surface of the tablet press turntable 24 when adding drug powder into the forming hole, and the small amount of drug powder remaining in the forming hole will all be sucked away by the vacuum cleaner 25. The drug powder can be recovered and reused to maximize the utilization of raw materials. When producing two-color tablets, two groups of drug dust treatment units and vacuum cleaners 25 can be set, and the setting position can be adjusted according to the working position of the punch.

[0034] A drug dust treatment method for a pharmaceutical tablet press adopts a drug dust treatment device to recover the dust during tablet pressing and reuse it, thereby maximizing the utilization of raw materials.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drug dust treatment unit for a pharmaceutical tablet press, characterized in that: include: The fixing block (3) is in the shape of a regular polygon; The drug dust collecting mechanisms (4) are the same in number as the side edges of the fixed block (3) and are respectively mounted on the side edges of the fixed block (3) and are used to wrap and sweep the punch; A pushing mechanism, used for pushing the drug dust collecting mechanism (4) directly below the punch to wrap the punch; A driving mechanism connected to the drug dust collecting mechanism (4) and used to drive the drug dust collecting mechanism (4) to rotate and sweep away and collect residual drug powder at the bottom of the punch when the drug dust collecting mechanism (4) wraps the punch; A dust hood (1) accommodates a fixed block (3) and is rotatably connected to the middle of the fixed block (3) via a first rotating shaft (2), and is used to absorb medicine powder on the medicine dust collection mechanism (4) that moves into the inner cavity of the dust hood (1); A driving member, used for driving the first rotating shaft (2) to rotate; The medicine dust collecting mechanism (4) is movably connected to the fixed block (3) via a supporting block (5); the supporting block (5) is rotatably connected to the fixed block (3); a first torsion spring is sleeved on the rotating shaft of the supporting block (5); a first bevel gear (6) is fixedly connected to the rotating shaft of the supporting block (5); a second bevel gear (7) capable of meshing with the first bevel gear (6) is fixedly connected to the dust cover (1); the first bevel gear (6) and the second bevel gear (7) are both incomplete gears.

2. The drug dust treatment unit of a pharmaceutical tablet press according to claim 1, characterized in that: The pushing mechanism comprises a wedge-shaped block (8), which is fixedly connected to the dust hood (1) and is used to drive the medicine dust collecting mechanism (4) to rotate relative to the supporting block (5).

3. A drug dust treatment unit for a pharmaceutical tablet press according to claim 2, characterized in that: The drug dust collecting mechanism (4) is composed of a mounting plate (9), a rotating block (10) and bristles (11); the mounting plate (9) is composed of a rotating rod and an end head; the rotating rod is rotatably connected to the support block (5); the rotating block (10) is rotatably connected to the end head; the top of the rotating block (10) is densely covered with bristles (11); the top of the bristles (11) is arranged in a concave shape capable of wrapping around the punch; and a second torsion spring is fixedly connected to the rotating shaft of the rotating block (10).

4. The drug dust treatment unit of a pharmaceutical tablet press according to claim 3, characterized in that: The driving mechanism comprises a first winding roller (12) and a second winding roller (13); the first winding roller (12) is fixedly mounted on a rotating shaft of a rotating block (10); the second winding roller (13) is rotatably connected to a supporting block (5); a first traction rope (14) is wound around the second winding roller (13); an end of the first traction rope (14) away from the second winding roller (13) passes through the supporting block (5) and a mounting plate (9) and extends into the mounting plate (9) to be fixedly connected to the first winding roller (12); a third gear (15) is fixedly connected to the rotating shaft of the second winding roller (13); a rack rod (16) capable of meshing with the third gear (15) is fixedly connected to the dust cover (1); the rack rod (16) is located at the second cone The second winding roller (13) is also fixedly connected to a ratchet (17) on the rotating shaft, and a pawl (18) is provided on the side of the ratchet (17). A slider (19) is rotatably mounted on the pawl (18). A third torsion spring is sleeved on the rotating shaft of the pawl (18). The slider (19) is elastically slidably connected to the support block (5). A second traction rope (20) is fixedly connected to the slider (19). The second traction rope (20) is fixedly connected to a push rod (21) at one end away from the slider (19). The push rod (21) is slidably connected to the support block (5). A wedge-shaped push block (22) capable of driving the push rod (21) to move is provided on the side of the push rod (21). The wedge-shaped push block (22) is fixedly connected to the wedge block (8).

5. The drug dust treatment unit of a pharmaceutical tablet press according to claim 4, characterized in that: The driving member comprises a friction wheel (23), and the friction wheel (23) is drivingly connected to a rotating disk (24) of a tablet press.

6. A drug dust treatment device for a pharmaceutical tablet press, characterized in that: It comprises the medicine dust treatment unit according to claim 5, and also comprises a dust collector (25), wherein the dust collector (25) is arranged at the side of the medicine dust treatment unit and is used to absorb the medicine dust on the surface of the turntable (24) when the tablet press presses the tablets.

7. A method for treating drug dust of a pharmaceutical tablet press, characterized in that: The dust generated during tablet pressing is recovered and reused by using the drug dust processing device as described in claim 6.

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