Crushing and screening device for medicine production

Abstract

The utility model discloses a crushing and screening device for medicine production, relates to the field of medicine production equipment, and aims to solve the problem that uniformity, solubility and bioavailability of medicines are affected due to different particle sizes of the medicines after the medicines are crushed. The medicine smashing device comprises a filter box, a distributor is fixedly connected into the filter box, a first discharging port is formed in the side edge of the filter box, a second discharging port is formed in the end of the filter box, a smashing box is fixedly connected to the upper end of the filter box, and a connecting block is fixedly connected between the smashing box and the distributor. In addition, the situation that large-particle medicine is wrapped by small-particle medicine is avoided in the re-processing process, and the grinding uniformity is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to medicine production equipment technical field especially is related to a kind of comminuting screening device for medicine production. BACKGROUND

[0002] In the preparation process of medicine production, the comminution and screening of raw materials are crucial links, which are directly related to the uniformity, solubility and bioavailability of the medicine, and other key quality attributes. Traditionally, the comminution of medicine mainly relies on manual operation, such as using a mortar with a pestle for manual grinding. Although this method is simple and direct, it has obvious limitations: high labor intensity, low efficiency, and difficulty in ensuring the uniformity and consistency of comminution. With the development of pharmaceutical industry, this manual operation method has gradually failed to meet the needs of large-scale production.

[0003] To overcome the shortcomings of manual comminution, some pharmaceutical manufacturers have begun to introduce mechanized equipment, among which the mill is the most common one. The mill realizes the comminution purpose by rolling the pharmaceutical raw materials with the built-in pressure roller. Compared with manual grinding, the mill significantly improves the production efficiency and reduces the physical burden of the operator. However, the existing mill only uses a simple pressure roller rolling method, lacks diversified comminution mechanism, resulting in unsatisfactory comminution effect for some high-hardness or irregularly-shaped large-particle raw materials. In addition, during the comminution process, the small particles that have been comminuted cannot be separated from the large particles that have not been comminuted in time, and the small particle raw materials tend to gather around the large particles, forming a so-called "protective layer", which reduces the comminution force on the large particles, making it more difficult to break them, and exacerbating the problem of uneven particle size of the raw materials.

[0004] The patent with application number "CN202021274165.5" discloses a "powder grinding and screening device for medicine production, which includes a housing, a comminution device, a grinding device and a screening device. The housing is provided with a feed inlet above, the comminution device is installed below the feed inlet, and it includes a first drive motor, a shaft and a plurality of comminution paddles. The first drive motor is connected to the shaft, and each comminution paddle is evenly distributed on the shaft. The grinding device is arranged below the comminution device, and it includes two second drive motors and two grinding rollers. Each second drive motor is connected to a grinding roller. The screening device is installed below the grinding device, and it includes a screen and a vibration motor for driving the screen to vibrate up and down. The screen is provided with a discharge outlet below." This application installs two opposite rotating pressure rollers between the comminution device and the screening device, further grinds the material into powder through the two grinding rollers, which improves the grinding effect of the pharmaceutical raw materials to a certain extent. However, in actual use, it cannot completely ensure that the pharmaceutical raw materials falling onto the screening device will be completely comminuted, and the uncomminuted pharmaceutical raw materials will block the screen holes of the screening device, reducing the screening efficiency of the pharmaceutical raw materials and increasing the difficulty of maintenance. UTILITY MODEL CONTENT

[0005] In view of the above, in order to overcome the defects of the prior art, the utility model provides a kind of comminuting screening device for drug production, the granularity of drug is different after being effectively solved by the design of drug comminution, thereby affecting the uniformity, solubility and bioavailability of drug problems.

[0006] To achieve the above object, the utility model provides the following technical scheme: the utility model discloses a bottom plate, the bottom plate is fixedly connected with filter box, the filter box is fixedly connected with distributor in, the side of filter box is equipped with first discharge gate, and the end of filter box is equipped with second discharge gate, and the upper end of filter box is fixedly connected with comminuting box, and the connecting block is fixedly connected between comminuting box and the distributor;

[0007] The distributor includes a screen cylinder and a spiral feeding rod, the spiral feeding rod is rotatably connected with the screen cylinder, the screen cylinder is provided with a through hole at the end, the through hole is communicated with the second discharge gate, the screen cylinder is provided with a sieve hole at the side, and the first discharge gate is located below the sieve hole.

[0008] Preferably, the second discharge gate is fixedly connected with a discharging plate, the discharging plate is fixedly connected with a support rod, and the support rod is rotatably connected with the spiral feeding rod.

[0009] Preferably, the comminuting box includes a hopper, two oppositely rotatable comminuting rollers are arranged below the hopper, the cutter teeth of the two comminuting rollers are staggered, the side of the comminuting roller is provided with a discharging plate, the discharging plate is provided with an inwardly inclined chute, and the inner side of the discharging plate is provided with a cutter groove matched with the comminuting roller.

[0010] Preferably, gears are fixedly connected to the two comminuting rollers, the two gears are meshed with each other, a first pulley set is fixedly connected to the gear, a second pulley set is fixedly connected to the input end of the first pulley set, and the output end of the second pulley set is fixedly connected with the spiral feeding rod.

[0011] Preferably, the lower end of the first discharge gate is an inclined bottom surface.

[0012] Preferably, a brush plate is slidably connected in the first discharge gate, a sliding block is fixedly connected to the brush plate, and a sliding groove is arranged on the filter box for the sliding block to slide.

[0013] Preferably, a reciprocating screw rod is threadedly connected to the sliding block, and the reciprocating screw rod is rotatably connected with the filter box.

[0014] Compared with the prior art, the utility model has the following prominent advantages:

[0015] The utility model discloses a filter box and crushing box internal structure schematic diagram.

[0016] The utility model discloses a filter box and crushing box internal structure schematic diagram. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the first axle side structure schematic diagram of the utility model embodiment 1.

[0018] Figure 2 It is the second axle side structure schematic diagram of the utility model embodiment 1.

[0019] Figure 3 It is the utility model filter box and crushing box internal structure schematic diagram.

[0020] Figure 4 It is the filter barrel part cross section structure schematic diagram of the utility model.

[0021] Figure 5 It is the axle side structure schematic diagram of the utility model embodiment 2.

[0022] Figure 6 It is the rear view cross section structure schematic diagram of the utility model embodiment 2.

[0023] Marked number in drawing: 1, bottom plate;2, filter box;3, first discharge port;4, second discharge port;5, crushing box;501, hopper;502, crushing roller;503, blanking plate;504, knife groove;6, connecting block;7, screen cylinder;8, spiral feeding rod;9, through -hole;10, screen hole;11, blanking plate;12, support rod;13, gear;14, first pulley group;15, second pulley group;16, brush plate;17, sliding block;18, sliding slot;19, reciprocating screw rod. DETAILED DESCRIPTION

[0024] The technical scheme in the utility model embodiments is clearly and completely described below in conjunction with the drawings of the utility model embodiments, and obviously, the described embodiments are only part of the embodiments of the utility model, instead of all the embodiments;Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts fall within the protection scope of the utility model. Embodiment 1

[0025] Please refer to the drawings of the utility model embodiment Figures 1-4The embodiment is a crushing and screening device for medicine production, which comprises a bottom plate 1, a filter box 2 fixedly connected to the bottom plate 1, a distributor fixedly connected to the filter box 2, a first discharge port 3 arranged at the side of the filter box 2, a second discharge port 4 arranged at the end of the filter box 2, a crushing box 5 fixedly connected to the upper end of the filter box 2, and a connecting block 6 fixedly connected between the crushing box 5 and the distributor.

[0026] The bottom plate 1 is located at the lowermost end of the device and serves to fix the device. The bottom plate 1 is provided with threaded holes, and is fixed by means of the threaded holes and fixing screws. Thus, excessive vibration of the device during the crushing process is avoided. The filter box 2 and the crushing box 5 are sequentially arranged above the bottom plate 1. The crushing box 5 is located at the uppermost end of the device, and the filter box 2 is located below the crushing box 5. The medicine raw material enters from the crushing box 5. During the medicine processing, the medicine enters the filter box 2 under the action of its own gravity. The filter box 2 screens the medicine with different particle sizes. The medicine with large particles moves along the sieve cylinder 7 from right to left under the action of the spiral feeding rod 8, and is removed from the filter box 2 through the second discharge port 4. The medicine with small particles enters the first discharge port 3 through the sieve hole 10. The first discharge port 3 and the second discharge port 4 are both provided with collection boxes. The collection box through which the medicine with appropriate particle size is collected is the collection box of the first discharge port 3. The medicine with large particles removed from the second discharge port 4 can be added to the crushing box for crushing. Thus, the small particles can not shield the large particles, and the uniformity of the crushed medicine is ensured by increasing the crushing times. The connecting block 6 has a structure of large at the top and small at the bottom. The connecting block 6 functions similarly to a funnel, facilitating the crushed medicine to enter the sieve cylinder 7 from the crushing box. The connecting block 6 is located at the end far from the through hole 9. Thus, the small particles can fall into the first discharge port 3 from the sieve hole 10 during the long-distance transfer of the medicine in the sieve cylinder 7.

[0027] The front end of the discharging plate 11 is a semi-cylindrical structure, and the inner side of the discharging plate 11 is inclined downward to the left. Thus, the medicine falling from the second discharge port 4 can better slide downward along the inclined surface. The supporting rod 12 supports the left end of the spiral feeding rod 8 to ensure the stability of the rotation of the spiral feeding rod 8.

[0028] The hopper 501 of the crushing box is a frustum mechanism with a large opening at the top, which increases the storage capacity of the hopper and facilitates feeding. Two crushing rollers 502 are located below the hopper 501, with a smaller opening at the bottom to better concentrate the drug around the rollers, facilitating crushing. Furthermore, both rollers 502 have multiple equally spaced cutting teeth to prevent interference between them. The teeth of the roller 502 are staggered, which improves the crushing effect of the crushing roller 502 on the drug. There are material drop plates 503 on both sides of the two crushing rollers 502. The upper ends of the two material drop plates 503 form a V-shaped structure. In this way, the drug can fall into the middle of the two crushing rollers 502 along the inclined groove at the upper end of the material drop plate 503, which facilitates the crushing rollers 502 to crush and cut the drug. In order to avoid interference between the crushing rollers 502 and the side of the material drop plate 503, a knife groove 504 is provided on the side of the material drop plate 503, and the teeth of the crushing roller 502 are just in contact with the knife groove 504.

[0029] The crushing roller 502 and the screw conveyor 8 share a common drive unit. A drive motor is installed on the rear side of the base plate 1. The first pulley group 14 and the second pulley group 15 are both composed of two pulleys and a belt. The input ends of the first pulley group 14 and the second pulley group 15 are mounted on the shaft of the drive motor. The pulley at the output end of the first pulley group 14 is fixedly connected to one of the two gears 13. The two gears 13 mesh with each other. When the motor works, the motor drives the first pulley group 14 and the second pulley group 15 to rotate together. The first pulley group 14 drives one of the gears 13 to rotate. The rotation of the gear 13 drives the other gear 13 to rotate in the opposite direction. The two gears 13 drive the two crushing rollers 502 to rotate relative to each other. At the same time, the rotation of the second pulley group 15 drives the screw conveyor to rotate.

[0030] To facilitate the collection of small drug particles, the lower end of the first discharge port 3 is designed as a smooth inclined groove, which makes the drug fall more smoothly and avoids the drug from accumulating at the first discharge port 3. Example 2

[0031] The structure is the same as that of the above embodiments, such as Figure 5 and Figure 6 As shown, the specific difference in this embodiment is that: a brush plate 16 is slidably connected inside the first discharge port 3, a slider 17 is fixedly connected to the brush plate 16, the filter box 2 is provided with a sliding groove 18 for the slider 17 to slide, the slider 17 is threadedly connected to a reciprocating screw 19, and the reciprocating screw 19 is rotatably connected to the filter box 2.

[0032] The inner side of the brush plate 16 is an arc-shaped surface that matches the screen, and the inner side of the brush plate 16 is provided with hard bristles. Under the cooperation of the sliding block 17 and the sliding groove 18, the brush plate 16 will slide along the first discharge port 3. The sliding of the brush plate 16 drives the bristles to move along the outer wall of the screen cylinder 7. After the bristles on the brush plate 16 contact the screen holes 10, the bristles clean the screen holes 10, ensuring the permeability of the screen holes 10 and avoiding the blockage of the screen holes 10. Further, the left and right sliding of the sliding block 17 can be moved through the reciprocating screw rod 19. The reciprocating screw rod 19 is rotationally connected with the filter box 2. The reciprocating screw rod 19 and the second pulley set 15 can be jointly driven by the connecting gear 13 installed therebetween.

[0033] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for the person skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. A pulverizing and screening device for pharmaceutical production, characterized by: Including the bottom plate (1), the bottom plate (1) is fixedly connected with the filter box (2), the filter box (2) is fixedly connected with the distributor, the filter box (2) side is equipped with the first discharge port (3), the filter box (2) end is equipped with the second discharge port (4), the filter box (2) upper end is fixedly connected with the crushing box (5), the crushing box (5) and the distributor are fixedly connected with the connecting block (6) between the filter box (2); The distributor includes a screen cylinder (7) and a spiral feeding rod (8), the spiral feeding rod (8) is rotatably connected with the screen cylinder (7), the screen cylinder (7) end is provided with a through hole (9), the through hole (9) is communicated with the second discharge port (4), the screen cylinder (7) side is provided with a sieve hole (10), and the first discharge port (3) is located below the sieve hole (10).

2. A comminuting and sifting device for pharmaceutical production according to claim 1, characterized in that: The second discharge port (4) is fixedly connected with a discharging plate (11), the discharging plate (11) is fixedly connected with a support rod (12), and the support rod (12) is rotatably connected with the spiral feeding rod (8).

3. A comminuting and sifting device for pharmaceutical production according to claim 1, characterized in that: The crushing box (5) includes a hopper (501), two opposite rotating crushing rollers (502) are arranged below the hopper (501), the cutter teeth of the two crushing rollers (502) are staggered, a discharging plate (503) is arranged on the side of the crushing roller (502), the discharging plate (503) is provided with an inwardly inclined chute, and a cutter groove (504) matched with the crushing roller (502) is arranged on the inner side of the discharging plate (503).

4. A comminuting and sifting device for pharmaceutical production according to claim 3, characterized in that: Two gear wheels (13) are fixedly connected to the crushing rollers (502), the two gear wheels (13) are engaged with each other, a first pulley set (14) is fixedly connected to the gear wheel (13), a second pulley set (15) is fixedly connected to the input end of the first pulley set (14), and the output end of the second pulley set (15) is fixedly connected with the spiral feeding rod (8).

5. The comminuting and sifting device for pharmaceutical production according to claim 1, characterized in that: The lower end of the first discharge port (3) is an inclined bottom surface.

6. The comminution and sizing device for pharmaceutical production according to claim 1, characterized in that: A brush plate (16) is slidably connected in the first discharge port (3), a sliding block (17) is fixedly connected to the brush plate (16), and a sliding groove (18) is arranged on the filter box (2) for sliding of the sliding block (17).

7. A comminuting and sizing device for pharmaceutical production according to claim 6, characterized in that: The sliding block (17) is threadedly connected with a reciprocating wire rod (19), and the reciprocating wire rod (19) is rotatably connected with the filter box (2).

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