Rotary granulator for medicine manufacturing

Abstract

The utility model relates to the technical field of medicine granulation, in particular to a rotary granulator for medicine manufacturing, and aims to solve the technical problems that in the prior art, along with the increase of time and frequency of scraping off medicines by a scraper, the medicines are easily adhered to the surface of the scraper, so that the medicines are more easily adhered to the scraper when the medicines are subsequently scraped off; the device comprises a shell, an inner barrel is fixedly connected to the inner wall of the shell, an electric push rod is fixedly connected to the top of the inner barrel, and after medicine powder is soaked and then fed into the inner barrel from a feeding pipe, the medicine powder is fed into the inner barrel through a discharging pipe, and then the medicine powder is discharged from the discharging pipe. Medicine is extruded from the extrusion opening through the electric push plate to form particles, then the medicine is scraped off through the scraper, and in the process that the scraper rotates to scrape off the medicine, the cleaning block can clean the rotating scraper, so that the situation that the completeness and uniformity of the scraped-off formed medicine are affected after the medicine is adhered to the scraper due to adhesion of the medicine and the scraper is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical granulation, and more specifically, to a rotary granulator for pharmaceutical manufacturing. Background Art

[0002] A pharmaceutical rotary granulator is a device used to prepare pharmaceutical powders into granules. Most of the existing rotary granulators for pharmaceutical manufacturing place the wet pharmaceutical powder in an extrusion barrel provided with an extrusion port, and then extrude the medicine from the extrusion port and rotate and scrape off the medicine through a scraper to form the medicine. However, as the time and number of times of scraping off the medicine by the scraper increase, the medicine is easily adhered to the surface of the scraper, making it easier for the scraper to adhere to the medicine when scraping off the medicine subsequently, thus affecting the integrity and uniformity of the formed medicine scraped off by the scraper. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art, meet the actual needs, and provide a rotary granulator for pharmaceutical manufacturing to solve the technical problem that as the time and number of times of scraping off the medicine by the scraper increase in the prior art, the medicine is easily adhered to the surface of the scraper, making it easier for the scraper to adhere to the medicine when scraping off the medicine subsequently, thus affecting the integrity and uniformity of the formed medicine scraped off by the scraper.

[0004] To solve the above technical problem, the utility model provides the following technical solution: A rotary granulator for pharmaceutical manufacturing, including a housing, the inner wall of the housing is fixedly connected with an inner cylinder, the top of the inner cylinder is fixedly connected with an electric push rod, one end of the electric push rod penetrates through the inner cylinder to its interior and is fixedly connected with an extrusion plate, the outer circumferential wall of the extrusion plate fits with the inner wall of the inner cylinder, the lower side of the inner cylinder is provided with a plurality of extrusion ports communicating with its interior, the extrusion ports are arranged in a spiral pattern, the outer wall of the inner cylinder is fixedly connected with a feed pipe communicating with its interior, the bottom of the housing is fixedly connected with a discharge pipe communicating with its interior, and a rotary processing mechanism for granulating and forming the medicine is arranged outside the inner cylinder;

[0005] The rotation processing mechanism includes a transmission ring which is rotatably connected to the outer wall of the inner cylinder. Symmetrically arranged scraping plates are fixedly connected to the outer wall of the transmission ring. The scraping plates are helically arranged, and the outer wall of the scraping plates is in contact with the outer wall of the inner cylinder where the extrusion ports are provided. A motor is fixedly connected to the outer wall of the housing. The main shaft of the motor is synchronously rotated with the transmission ring through a belt. A guiding plate is fixedly connected to the outer wall of the inner cylinder. A slider is slidably connected to the inner wall of the guiding plate. A cleaning block is arranged at one end of the slider away from the guiding plate. A cleaning groove for the scraping plate to pass through is provided at one end of the cleaning block away from the slider. After wetting the drug powder, it is fed into the inner cylinder through the feed pipe. The drug is extruded from the extrusion port to form granules by the electric push plate, and then the drug is scraped off by the scraper. During the process of the scraper rotating to scrape off the drug, the cleaning block will clean the rotating scraper to prevent the drug from sticking to the scraper, which may affect the integrity and uniformity of the formed drug scraped off by the scraper. Moreover, when the helical scraper scrapes off the drug, the drug is gradually scraped off from bottom to top, causing the drug to gradually fall into the interior of the housing, thereby preventing the upper drug granules from contacting and impacting the lower drug granules during the falling process, which may affect the integrity and uniformity between the drug granules.

[0006] Preferably, the cleaning block and the slider are hinged by a torsion spring; the hinging of the cleaning block and the slider enables the cleaning block to twist, so that the cleaning groove on the cleaning block can twist and fit the scraper along with the cleaning block, thereby enhancing the cleaning effect on the scraper.

[0007] Preferably, a medicine storage box is fixedly connected to the inner wall of the housing, and the medicine storage box is located directly below the guiding plate; the medicine storage box contacts the drug powder cleaned from the scraping plate by the cleaning block, thereby preventing the powder from falling inside the housing and contacting and sticking to the formed drug granules, which may affect the uniformity of the formed drug granules.

[0008] Preferably, a guiding ring with an outer edge gradually concave towards the middle is fixedly connected to the bottom inner wall of the housing, and the inner wall of the guiding ring is fixedly connected to the outer wall of the discharge pipe; the provided guiding ring guides the formed drug granules, causing the drug to move towards the discharge pipe.

[0009] Preferably, a plurality of brackets are fixedly connected to the bottom of the housing, and the housing is supported by the brackets to ensure the stability of the housing.

[0010] Compared with the prior art, the beneficial effects of the present utility model are:

[0011] 1. The utility model realizes that after wetting the drug powder and feeding it into the inner cylinder through the feeding pipe, the drug is extruded from the extrusion port to form particles by the electric push plate, and then the drug is scraped off by the scraper. During the process of the scraper rotating to scrape off the drug, the cleaning block will clean the rotating scraper to prevent the drug from adhering to the scraper, which may affect the integrity and uniformity of the formed drug scraped off by the scraper.

[0012] 2. When the spiral-structured scraper in the utility model scrapes off the drug, it can also scrape off the drug step by step from bottom to top, making the drug gradually fall into the interior of the outer shell, thereby preventing the upper drug particles from contacting and impacting the lower drug particles during the falling process, which may affect the integrity and uniformity between the drug particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the utility model;

[0014] Figure 2 is a cross-sectional view of the outer shell of the utility model;

[0015] Figure 3 is a cross-sectional view of the inner cylinder of the utility model;

[0016] Figure 4 is a schematic structural diagram of the guiding plate of the utility model.

[0017] Explanation of the reference numerals in the drawings:

[0018] 1. Outer shell; 2. Inner cylinder; 3. Electric push rod; 4. Extrusion plate; 5. Extrusion port; 6. Feeding pipe; 7. Discharge pipe; 8. Transmission ring; 9. Scraper; 10. Motor; 11. Guiding plate; 12. Slide block; 13. Cleaning block; 14. Cleaning groove; 15. Medicine storage box; 16. Guiding ring; 17. Bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] As Figures 1 to 4 shown, the utility model relates to a rotary granulator for pharmaceutical manufacturing, including an outer shell 1, the inner wall of the outer shell 1 is fixedly connected with an inner cylinder 2, the top of the inner cylinder 2 is fixedly connected with an electric push rod 3, one end of the electric push rod 3 penetrates through the inner cylinder 2 to its interior and is fixedly connected with an extrusion plate 4, the outer circumferential wall of the extrusion plate 4 is attached to the inner wall of the inner cylinder 2, the lower side of the inner cylinder 2 is provided with a plurality of extrusion ports 5 communicating with its interior, the extrusion ports 5 are arranged in a spiral pattern, the outer wall of the inner cylinder 2 is fixedly connected with a feeding pipe 6 communicating with its interior, the bottom of the outer shell 1 is fixedly connected with a discharge pipe 7 communicating with its interior, and a rotary processing mechanism for granulating the drug is arranged outside the inner cylinder 2;

[0020] The rotation processing mechanism includes a transmission ring 8 which is rotatably connected to the outer wall of the inner cylinder 2. Symmetrically arranged scraping plates 9 are fixedly connected to the outer wall of the transmission ring 8. The scraping plates 9 are helically arranged, and the outer wall of the scraping plates 9 is attached to the outer wall of the inner cylinder 2 where the extrusion ports 5 are provided. A motor 10 is fixedly connected to the outer wall of the housing 1. The main shaft of the motor 10 is synchronously rotated with the transmission ring 8 through a belt. A guiding plate 11 is fixedly connected to the outer wall of the inner cylinder 2. A sliding block 12 is slidably connected to the inner wall of the guiding plate 11. A cleaning block 13 is provided at one end of the sliding block 12 away from the guiding plate 11. A cleaning groove 14 for the scraping plate 9 to pass through is provided at one end of the cleaning block 13 away from the sliding block 12. After wetting the drug powder, it is fed into the inner cylinder 2 through the feed pipe 6. The drug is extruded from the extrusion port 5 to form granules by an electric push plate, and then the drug is scraped off by a scraper. During the process of the scraper rotating to scrape off the drug, the cleaning block 13 will clean the rotating scraper to prevent the drug from adhering to the scraper, which may affect the integrity and uniformity of the formed drug after the scraper adheres to the drug. Moreover, when the helical scraper scrapes off the drug, the drug is gradually scraped off from bottom to top, causing the drug to gradually fall into the interior of the housing 1. This can prevent the upper drug granules from contacting and impacting the lower drug granules during the falling process, thereby affecting the integrity and uniformity between the drug granules.

[0021] Further, the cleaning block 13 and the sliding block 12 are hinged by a torsion spring; the hinging of the cleaning block 13 and the sliding block 12 enables the cleaning block 13 to twist, so that the cleaning groove 14 on the cleaning block 13 can twist and fit the scraper along with the cleaning block 13, thereby enhancing the cleaning effect on the scraper.

[0022] Further, a medicine storage box 15 is fixedly connected to the inner wall of the housing 1, and the medicine storage box 15 is located directly below the guiding plate 11; the medicine storage box 15 contacts the drug powder cleaned from the scraping plate 9 by the cleaning block 13, thereby preventing the powder from falling inside the housing 1 and contacting and adhering to the formed drug granules, which may affect the uniformity of the formed drug granules.

[0023] Further, a guiding ring 16 with an outer edge gradually concave towards the middle is fixedly connected to the bottom inner wall of the housing 1, and the inner wall of the guiding ring 16 is fixedly connected to the outer wall of the discharge pipe 7; the provided guiding ring 16 guides the formed drug granules, causing the drug to move towards the discharge pipe 7.

[0024] Further, a plurality of brackets 17 are fixedly connected to the bottom of the housing 1, and the housing 1 is supported by the brackets 17 to ensure the stability of the housing 1.

[0025] Working principle: This embodiment provides a rotary granulator for pharmaceutical manufacturing. When in use, the drug is wetted and then put into the inner cylinder 2 through the feed pipe 6. The extrusion plate 4 is pushed to move by the electric push rod 3, and the drug in the inner cylinder 2 is extruded and formed from the extrusion port 5. The motor 10 rotates to drive the transmission ring 8 to rotate through the belt, so that the transmission ring 8 drives the scraper 9 with a spiral structure to rotate, and the scraper 9 scrapes off the formed drug particles from bottom to top in turn. As the scraper 9 rotates, the bottom of the scraper 9 will be inserted into the cleaning groove 14 on the cleaning block 13, and as the scraper 9 rotates, the scraper 9 will push against the inner wall of the cleaning groove 14, causing the cleaning block 13 to twist and drive the slide plate to move upward along with the spiral scraper 9. After the top of the scraper 9 passes through the cleaning groove 14 and no longer contacts it, at this time, the slider 12 and the cleaning block 13 will reset and slide under their own gravity, preparing for the next cleaning of the scraper 9. In this way, the cleaning groove 14 on the cleaning plate fully scrapes and cleans the scraper 9, scraping off the drug adhered to the scraper 9 and falling into the medicine storage box 15;

[0026] After the scraped drug particles fall on the guide plate 11 inside the outer shell 1, they will be discharged from the discharge pipe 7, thus completing the pharmaceutical granulation.

[0027] The embodiments disclosed in this utility model are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of this utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of this utility model, they are within the protection scope of this utility model.

Claims

1. A rotary granulator for pharmaceutical manufacturing, characterized in that: The invention comprises an outer shell (1), the inner wall of the outer shell (1) is fixedly connected to an inner cylinder (2), the top of the inner cylinder (2) is fixedly connected to an electric push rod (3), one end of the electric push rod (3) penetrates the inner cylinder (2) to the inside thereof and is fixedly connected to an extrusion plate (4), the outer ring wall of the extrusion plate (4) is in contact with the inner wall of the inner cylinder (2), a plurality of extrusion ports (5) connected to the inside of the inner cylinder (2) are provided on the lower side of the inner cylinder (2), the extrusion ports (5) are arranged in a spiral, the outer wall of the inner cylinder (2) is fixedly connected to a feed pipe (6) connected to the inside of the inner cylinder (2), the bottom of the outer shell (1) is fixedly connected to a discharge pipe (7) connected to the inside of the inner cylinder, and a rotating processing mechanism for granulating the drug is arranged outside the inner cylinder (2).

2. A rotary granulator for pharmaceutical manufacturing according to claim 1, characterized in that: The rotary processing mechanism comprises a transmission ring (8), the transmission ring (8) being rotatably connected to the outer wall of the inner cylinder (2), the outer wall of the transmission ring (8) being fixedly connected to a symmetrically arranged scraper (9), the scraper (9) being spirally arranged, the outer wall of the scraper (9) being in contact with the outer wall of the inner cylinder (2) where the extrusion port (5) is provided, the outer wall of the outer shell (1) being fixedly connected to a motor (10), the main shaft of the motor (10) being synchronously rotated with the transmission ring (8) through a belt, the outer wall of the inner cylinder (2) being fixedly connected to a guide plate (11), the inner wall of the guide plate (11) being slidably connected to a slider (12), the end of the slider (12) away from the guide plate (11) being provided with a cleaning block (13), the end of the cleaning block (13) away from the slider (12) being provided with a cleaning groove (14) for the scraper (9) to pass through.

3. A rotary granulator for pharmaceutical manufacturing according to claim 2, characterized in that: The cleaning block (13) is hinged to the sliding block (12) via a torsion spring.

4. A rotary granulator for pharmaceutical manufacturing according to claim 2, characterized in that: A medicine storage box (15) is fixedly connected to the inner wall of the outer shell (1), and the medicine storage box (15) is located directly below the guide plate (11).

5. A rotary granulator for pharmaceutical manufacturing according to claim 1, characterized in that: A guide ring (16) whose outer edge gradually concave toward the middle is fixedly connected to the inner wall of the bottom of the housing (1), and the inner wall of the guide ring (16) is fixedly connected to the outer wall of the discharge pipe (7).

6. A rotary granulator for pharmaceutical manufacturing according to claim 1, characterized in that: A plurality of brackets (17) are fixedly connected to the bottom of the housing (1).

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