Raw material screening device for tablet production

Abstract

The utility model relates to the technical field of tablet screening, and discloses a raw material screening device for tablet production, which comprises a box body, a driving piece is arranged on one side of the box body, a screening mechanism swinging through the driving piece is arranged on one side of an inner cavity of the box body, and a plurality of groups of blanking covers are arranged on one side of the box body. The multiple sets of discharging covers communicate with a material returning mechanism used for recycling raw materials. Through cooperation of the box body, the screening mechanism, the material returning mechanism and the crushing mechanism, coarse-particle-size raw materials screened out by the screening mechanism can enter a material returning pipe through a discharging cover, so that the raw materials are conveyed into the crushing mechanism under the action of an auger, the coarse-particle-size raw materials are crushed and refined through a crushing roller, and therefore secondary screening of the raw materials is facilitated; according to the raw material screening device, the number of manual cleaning of raw materials with large particle sizes for secondary processing is reduced, manual operation steps are reduced, screening and secondary processing screening are integrated, and therefore the raw material screening efficiency is improved.

Description

Technical Field

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

[0002] Tablets are composed of raw materials, fillers, adsorbents, binders, lubricants, dispersants, wetting agents, disintegrants, fragrances, colorants, etc. The materials are first crushed, granulated, and dried, and then compressed into tablets using a tableting machine. During the tableting process, the crushed raw materials need to be screened to improve the quality of the tablets in the later stages of tableting.

[0003] In the prior art, Chinese Utility Model Application No. CN202321479872.1 discloses a raw material screening device for tablet production, including a base, a tank body on top of the base, a cover on the top of the tank body, a feeding port on the cover, a drive motor mounted on the cover, a rotating shaft fixedly connected to the output shaft of the drive motor, and a rotating shaft movably connected to the bottom of the tank body at one end away from the drive motor. Several evenly distributed screening baskets are sequentially mounted on the rotating shaft from top to bottom. This utility model's raw material screening device for tablet production, through the set screening baskets, uses a drive motor to drive the screening baskets to rotate at high speed, screening the raw materials for tablet production sequentially from top to bottom. The device incorporates springs and a vibration motor to assist in vibration during screening, increasing the screening effect and improving screening efficiency. The cover and tank body are detachable for easy cleaning of the screening baskets, preventing clogging and maintaining the screening effect of the device.

[0004] The above technical solution uses high-speed rotation to speed up the screening of tablet raw materials. However, raw materials with larger particle sizes will remain in the screening frame. It is necessary to remove the entire screening basket from the tank for secondary collection of raw materials and clean the sieve holes on the screening basket. This increases the number of working steps and affects the efficiency of screening tablet raw materials. Therefore, we need to propose a raw material screening device for tablet production. Utility Model Content

[0005] The purpose of this invention is to provide a raw material screening device for tablet production, which can perform multi-stage screening while conveniently recovering and crushing coarse raw materials, and circulating and screening the recovered raw materials, thereby accelerating the screening efficiency of raw materials, reducing manual operation steps, and facilitating the cleaning of the screen to avoid screen blockage affecting screening efficiency, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a raw material screening device for tablet production, comprising a box body, a driving component provided on one side of the box body, a screening mechanism that swings via the driving component provided on one side of the inner cavity of the box body, multiple sets of feeding hoods provided on one side of the box body, each set of feeding hoods being connected to a return material mechanism for recycling raw materials, and a secondary crushing mechanism for crushing the recycled raw materials provided on the upper surface of the box body;

[0007] The material return mechanism includes a material return pipe, and an auger is rotatably installed inside the material return pipe. The upper end of the auger passes through the material return pipe and is driven by a first motor.

[0008] The secondary crushing mechanism includes a crushing box disposed on the upper surface of the housing. Two sets of crushing rollers are rotatably disposed inside the crushing box. One end of each set of crushing rollers passes through the crushing box and is fixedly connected to a gear. The other end of one set of crushing rollers passes through the crushing box and is driven by a second motor. A conduit is disposed between one side of the crushing box and the return pipe.

[0009] Preferably, the screening mechanism includes a mounting plate, on one side of which multiple sets of screening components are arranged at equal intervals from top to bottom. Each set of screening components is provided with two sets of telescopic springs at the end away from the mounting plate, and two sets of support columns are arranged between the multiple sets of screening components.

[0010] Preferably, the screening assembly includes a sieve plate, with reinforcing beams fixedly connected to both ends of the lower surface of the sieve plate. Each of the two sets of reinforcing beams has an installation groove on one side of its opposite side, and a screw and a sliding rod are respectively installed in the two sets of installation grooves. A scraper frame that slides with the sliding rod is threaded onto the screw, and a cleaning brush is installed on the inner top of the scraper frame. A fourth motor for driving the screw is installed on one side of the installation groove.

[0011] Preferably, baffles are fixedly connected to both ends of the upper surface of the sieve plate, the extension line of the sieve plate intersects the horizontal plane, and the scraper frame is U-shaped.

[0012] Preferably, multiple sets of limiting guide rods are slidably inserted into one side of the mounting plate, and the multiple sets of limiting guide rods are all fixedly installed on one side of the housing, and the multiple sets of limiting guide rods are arranged in a rectangular array.

[0013] Preferably, the driving component includes a third motor disposed on one side of the housing, the output shaft of the third motor being drivenly connected to a rotating shaft, the upper end of the rotating shaft being fixedly connected to a cam, and the outer side of the cam abutting against the other side of the mounting plate.

[0014] Preferably, the upper surface of the box is provided with a feed pipe, one side of the inner cavity of the box is provided with multiple sets of receiving plates, the multiple sets of receiving plates are respectively arranged below multiple sets of screen plates, the other side of the box is provided with a discharge hole that communicates with the discharge hood, and a receiving hopper is inserted into the lower end of the box adjacent to the discharge hole.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model mainly utilizes the cooperation between the housing, screening mechanism, return material mechanism, and crushing mechanism. The coarse-sized raw materials screened by the screening mechanism enter the return material pipe through the feeding hood, and are then transported to the crushing mechanism by the auger. The crushing rollers then pulverize and refine the coarse-sized raw materials, facilitating secondary screening and reducing the need for manual cleaning and secondary processing of coarse-sized raw materials. This reduces the number of manual operation steps and integrates screening and secondary processing, thereby improving the efficiency of raw material screening.

[0017] 2. This utility model, through the cooperation between the driving component and the screening mechanism, uses a cam to abut against the mounting plate, causing the screening component to reset under the elastic action of the telescopic spring, thereby ensuring that the mounting plate and the cam fit tightly, so that the screening component can screen the raw materials. At the same time, under the action of the screw driven by the fourth motor, the scraper frame can easily drive the cleaning brush to clean the screen plate, avoid the raw materials from clogging the screen holes, and improve the screening efficiency of the raw materials. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the box of this utility model;

[0020] Figure 3 This is a schematic diagram of the screening mechanism structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the screening component structure of this utility model.

[0022] In the diagram: 1. Box body; 2. Feed pipe; 3. Discharge hood; 4. Return mechanism; 41. Return pipe; 42. Screwdriver; 43. First motor; 44. Guide tube; 5. Secondary crushing mechanism; 51. Crushing box; 52. Crushing roller; 53. Gear; 54. Second motor; 6. Drive component; 61. Third motor; 62. Rotating shaft; 63. Cam; 7. Screening mechanism; 71. Mounting plate; 72. Limiting guide rod; 73. Screening assembly; 731. Screen plate; 732. Reinforcing beam; 733. Mounting groove; 734. Screw; 735. Fourth motor; 736. Stop bar; 737. Scraper frame; 738. Cleaning brush; 74. Telescopic spring component; 8. Discharge hole; 9. Receiving plate; 10. Receiving hopper. Detailed Implementation

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

[0024] Please see Figure 1-4 This utility model provides a technical solution: a raw material screening device for tablet production, including a box 1, a driving component 6 is provided on one side of the box 1, a screening mechanism 7 that swings through the driving component 6 is provided on one side of the inner cavity of the box 1, a plurality of feeding hoods 3 are provided on one side of the box 1, the plurality of feeding hoods 3 are all connected to a return mechanism 4 for recycling raw materials, and a secondary crushing mechanism 5 for crushing the recycled raw materials is provided on the upper surface of the box 1.

[0025] The return mechanism 4 includes a return pipe 41, and an auger 42 is rotatably installed inside the return pipe 41. The upper end of the auger 42 passes through the return pipe 41 and is driven by a first motor 43.

[0026] The secondary crushing mechanism 5 includes a crushing box 51 disposed on the upper surface of the box body 1. Two sets of crushing rollers 52 are rotatably disposed inside the crushing box 51. One end of each set of crushing rollers 52 passes through the crushing box 51 and is fixedly connected to a gear 53. The other end of one set of crushing rollers 52 passes through the crushing box 51 and is driven by a second motor 54. A guide tube 44 is disposed between one side of the crushing box 51 and the return pipe 41.

[0027] The screening mechanism 7 includes a mounting plate 71. Multiple screening components 73 are arranged on one side of the mounting plate 71. The multiple screening components 73 are arranged at equal intervals from top to bottom. Two sets of telescopic springs 74 are provided at the ends of the multiple screening components 73 away from the mounting plate 71. Two sets of support columns are provided between the multiple screening components 73 to improve the stability of the screening components 73.

[0028] The screening assembly 73 includes a screen plate 731. Reinforcing beams 732 are fixedly connected to both ends of the lower surface of the screen plate 731. Mounting grooves 733 are provided on opposite sides of the two sets of reinforcing beams 732. A screw 734 and a sliding rod are respectively installed in each of the two mounting grooves 733. A scraper frame 737, which slides along the sliding rod, is threaded onto the screw 734. A cleaning brush 738 is installed on the top inner side of the scraper frame 737. A fourth motor 735 is installed on one side of the mounting groove 733 to drive the screw 734. The fourth motor 735 drives the screw 734 to adjust the position of the scraper frame 737, causing it to slide along the mounting groove 733. This facilitates the cleaning brush 738 in cleaning the raw materials on the screen plate 731, preventing the raw materials from clogging the screen holes and improving the screening efficiency.

[0029] Both ends of the upper surface of the sieve plate 731 are fixedly connected with baffles 736. The extension line of the sieve plate 731 is set to intersect with the horizontal plane. The scraper frame 737 is set in a U-shape. The baffles 736 prevent the raw material from falling into the gap between the box 1 and the screening mechanism 7 during the screening process, thereby ensuring the screening quality of the raw material.

[0030] Multiple sets of limiting guide rods 72 are slidably inserted into one side of the mounting plate 71. All sets of limiting guide rods 72 are fixedly installed on one side of the housing 1. The multiple sets of limiting guide rods 72 are arranged in a rectangular array. The use of multiple sets of limiting guide rods 72 improves the stability of the horizontal movement of the mounting plate 71 on the housing 1, thereby improving the service life of the screening mechanism 7.

[0031] The driving component 6 includes a third motor 61 located on one side of the housing 1. The output shaft of the third motor 61 is connected to a rotating shaft 62. A cam 63 is fixedly connected to the upper end of the rotating shaft 62. The outer side of the cam 63 abuts against the other side of the mounting plate 71. By using the outer side of the cam 63 to abut against the mounting plate 71, the mounting plate 71 can be easily driven to move back and forth on the horizontal plane, thereby accelerating the screening efficiency of the screen plate 731 for raw materials.

[0032] The upper surface of the box body 1 is provided with a feed pipe 2. One side of the inner cavity of the box body 1 is provided with multiple sets of receiving plates 9, which are respectively located below multiple sets of screen plates 731. The other side of the box body 1 is provided with a discharge hole 8 that communicates with the discharge hood 3. A receiving hopper 10 is inserted into the lower end of the side of the box body 1 adjacent to the discharge hole 8. The feed pipe 2 facilitates the feeding of raw materials, and the multiple sets of receiving plates 9 facilitate the collection of coarse-sized raw materials that have not been screened out by the screen plates 731, so that the raw materials can easily enter the return pipe 41 through the discharge hood 3.

[0033] In use, tablet raw materials are fed into the housing 1 through the feed pipe 2. The raw materials first fall onto the upper screening component 73. The third motor 61 drives the cam 63 to abut against the mounting plate 71, thereby driving multiple sets of screening components 73 to swing horizontally, accelerating the screening efficiency of the raw materials on the sieve plate 731. The sieve plate 731 has progressively smaller sieve holes from top to bottom, which facilitates the passage of larger raw material particles through the receiving plate 9 into the discharge hood 3. The first motor 43 drives the auger 42 to facilitate the upward conveying of the raw materials that fall into the return pipe 41 through the discharge hood 3, thus facilitating the conveying of the raw materials through the conduit 44 into the crushing box 51. The raw materials are further crushed by two sets of crushing rollers 52, so that the crushed coarse-sized raw materials fall back onto the screening component 73 for secondary screening. This reduces the need for manual collection and crushing of coarse-sized raw materials for secondary processing, and improves the efficiency of screening tablet raw materials.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material screening device for tablet production, comprising a box (1), characterized in that: One side of the box (1) is provided with a driving element (6), one side of the box (1) is provided with a screening mechanism (7) which is swung by the driving element (6), one side of the box (1) is provided with a plurality of groups of discharging covers (3), a plurality of groups of the discharging covers (3) are all communicated with a material recycling mechanism (4) for recycling raw materials, the upper surface of the box (1) is provided with a secondary crushing mechanism (5) for crushing the recycled raw materials; The material recycling mechanism (4) comprises a recycling pipe (41), a screw conveyor (42) is rotatably arranged in the recycling pipe (41), and the upper end of the screw conveyor (42) penetrates the recycling pipe (41) and is driven by a first motor (43); The secondary crushing mechanism (5) comprises a crushing box (51) arranged on the upper surface of the box (1), two groups of crushing rollers (52) are rotatably arranged in the crushing box (51), one end of the two groups of crushing rollers (52) penetrates the crushing box (51) and is fixedly connected with a gear (53), one end of one group of the crushing rollers (52) penetrates the crushing box (51) and is driven by a second motor (54), and a pipe (44) is arranged between one side of the crushing box (51) and the recycling pipe (41).

2. A raw material screening device for tablet production according to claim 1, characterized in that: The screening mechanism (7) comprises a mounting plate (71), a plurality of groups of screening assemblies (73) are arranged on one side of the mounting plate (71), the plurality of groups of screening assemblies (73) are arranged at equal intervals from top to bottom, two groups of telescopic spring elements (74) are arranged at the ends, away from the mounting plate (71), of the plurality of groups of screening assemblies (73), and two groups of supporting columns are arranged between the plurality of groups of screening assemblies (73).

3. A raw material screening device for tablet production according to claim 2, characterized in that: The screening assembly (73) comprises a screen plate (731), the lower surface of the screen plate (731) is fixedly connected with a reinforcing beam (732) at both ends, mounting grooves (733) are formed in the opposite sides of the two groups of reinforcing beams (732), and a screw rod (734) and a sliding rod are arranged in the two mounting grooves (733) respectively, a scraping frame (737) is threadedly connected to the screw rod (734) and is arranged in sliding mode with the sliding rod, a cleaning brush (738) is arranged on the inner top of the scraping frame (737), and a fourth motor (735) for driving the screw rod (734) is arranged on one side of the mounting groove (733).

4. A raw material screening device for tablet production according to claim 3, characterized in that: The upper surface of the screen plate (731) is fixedly connected with a blocking strip (736) at both ends, the extension line of the screen plate (731) is arranged in intersecting mode with the horizontal plane, and the scraping frame (737) is arranged in the shape of a Chinese character.

5. A raw material screening device for tablet production according to claim 4, characterized in that: A plurality of groups of limiting guide rods (72) are slidably inserted into one side of the mounting plate (71), the plurality of groups of limiting guide rods (72) are fixedly installed on one side of the box (1), and the plurality of groups of limiting guide rods (72) are arranged in a rectangular array.

6. A raw material screening device for tablet production according to claim 5, characterized in that: The driving element (6) comprises a third motor (61) arranged on one side of the box (1), a rotating shaft (62) is in transmission connection with the output shaft of the third motor (61), a cam (63) is fixedly connected to the upper end of the rotating shaft (62), and the outer side of the cam (63) abuts against the other side of the mounting plate (71).

7. A raw material screening device for tablet production according to claim 6, characterized in that: The upper surface of the box (1) is provided with a feeding pipe (2), one side of the inner cavity of the box (1) is provided with a plurality of groups of material receiving plates (9), a plurality of groups of the material receiving plates (9) are respectively arranged below a plurality of groups of sieve plates (731), the other side of the box (1) is provided with a discharging hole (8) which is communicated with a discharging cover (3), and the lower end of the side adjacent to the discharging hole (8) of the box (1) is inserted with a material receiving hopper (10).

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