A granulator particle sizing device

Abstract

The utility model belongs to the field of pharmaceutical equipment, and concretely is a granulator granule screening device, including screening jar, the screening jar bottom is installed with collecting box, the screening jar top is installed with jar cover, the jar cover top intercommunication has the feed pipe, the jar cover top is firmly connected with the motor, the motor output is firmly connected with the rotary rod, the screening jar bottom is firmly connected with the support frame, the rotary rod surface is firmly connected with a plurality of scrapers, the screening jar middle part is firmly connected with a group of screen meshes, the screening jar middle part is firmly connected with a group of slide plates, the slide plate is the inclination setting, the screening jar surface is firmly connected with the connecting passage, the screening jar surface is firmly connected with the exit board, through the granule from top to bottom through the screen mesh of different aperture, can step by step screen out the granule of different particle size, increase the uniformity of collecting granule particle size, simultaneously the scraper continuously pushes the granule and moves on the screen mesh surface, can reduce the granule accumulation and block the screen mesh, improve the efficiency that the small granule transmits the screen mesh.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical equipment, specifically a granulator particle screening device. Background Technology

[0002] Medicines are special substances used to prevent, treat, diagnose diseases, or regulate human physiological functions. They must be prepared in accordance with national drug standards and their safety and efficacy must be ensured through standardized approval, production, and regulatory processes. Medicines include various categories such as traditional Chinese medicine, chemical drugs, and biological products.

[0003] During drug manufacturing, the authenticity and content of Chinese medicinal materials are identified and tested to ensure compliance with pharmacopoeia standards. The Chinese medicinal materials need to undergo processing such as washing, slicing, and drying to remove impurities and mix evenly. They are then granulated using wet or dry granulation, sieved, mixed, and compressed into tablets or capsules. After coating, the granulated materials and mixtures are tested for particle size, content, microbial activity, and other indicators. Once qualified, they proceed to the next process. The appearance, content, dissolution, and stability of the preparation are comprehensively tested. After meeting the standards, the preparation is labeled, boxed, and packaged, with instructions and quality inspection reports attached.

[0004] The particle size produced by granulators is usually uneven. If the particle size exceeds the target range, it will cause mold blockage and excessive tablet weight during tableting. If the particle size is too small, it will result in poor flowability and easy moisture absorption and clumping. During tableting, tablet weight fluctuations and disintegration time will be more likely to occur. Therefore, a particle screening device for granulators is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A granulator particle screening device of this utility model includes a screening tank; a collection box is installed at the bottom of the screening tank; a tank cover is installed at the top of the screening tank; a feed pipe is connected to the top of the tank cover; a motor is fixedly connected to the top of the tank cover; a rotating rod is fixedly connected to the output end of the motor; a support frame is fixedly connected to the bottom of the screening tank; the rotating rod and the support frame are rotatably connected; multiple scrapers are fixedly connected to the surface of the rotating rod; a set of screens is fixedly connected to the middle of the screening tank; the mesh openings of the screens are arranged from small to large; a set of sliding plates is fixedly connected to the middle of the screening tank; the sliding plates are inclined. The sliding plate is positioned below the screen; a connecting channel is fixed to the surface of the screening tank; the connecting channel connects to a set of screens; an outlet plate is fixed to the surface of the screening tank; the outlet plate connects to the inclined end of the sliding plate; by setting a set of screens in the middle of the screening tank, with the mesh gaps arranged from small to large, a multi-layer screening structure is formed. Particles pass through screens of different apertures from top to bottom, gradually screening out particles of different sizes, increasing the uniformity of the collected particle size. At the same time, the scraper continuously pushes the particles to move on the screen surface, which can reduce particle accumulation and clogging of the screen, and also allow the particles to fully contact the screen, improving the efficiency of small particles passing through the screen and reducing the mixing of large particles.

[0007] Preferably, a filter cloth is installed at the bottom of the tank cover; an induced draft fan is installed at the top of the tank cover; when the induced draft fan is turned on, a negative pressure is formed, which draws in the air and dust in the screening tank and discharges it. The filter cloth can intercept dust particles in the air, reduce the direct emission of dust into the environment, reduce dust pollution in the workshop, and the induced draft fan continuously draws air to form an airflow circulation inside the screening tank, reduce equipment failure caused by dust accumulation, and increase the service life of the equipment.

[0008] Preferably, the filter cloth includes a mounting frame and bolts; the bottom of the can lid is fixedly connected to the mounting frame; the filter cloth is disposed in the middle of the mounting frame; the can lid and the mounting frame are fixed together with bolts; by disassembling the filter cloth and recovering the fine powder on the surface of the filter cloth, it can be reused in the granulation process, reducing the loss of raw materials caused by direct discarding and reducing production costs. Regularly disassembling and cleaning the filter cloth can increase its air permeability and increase the stability of the filter cloth adsorption.

[0009] Preferably, an air pipe is installed at the bottom of the support frame; an air pump is installed at the end of the air pipe; a cavity is located in the middle of the rotating rod; multiple air outlets are installed on the surface of the rotating rod; the air pipe and the air outlets are connected; the air outlets are connected to the air pipe through the cavity; the air pipe is positioned between the screen and the slide plate; the airflow blown by the air pump is ejected from the air outlet, directly impacting the clogging particles on the screen, causing them to detach from the mesh, reducing the decrease in screening efficiency caused by screen clogging; at the same time, the air outlet rotates synchronously with the rotating rod, continuously blowing and cleaning the surface of the screening tank during the screening process, reducing the impact of downtime for cleaning on screening efficiency.

[0010] Preferably, a guide plate is fixed to one side of the scraper; the guide plate is inclined; when the inclined guide plate rotates with the scraper, the inclined thrust is used to disperse the particles piled in the center to the edge of the screen, so that the particles evenly cover the entire screen surface, increasing the contact area between the particles and the screen and increasing the screening efficiency.

[0011] Preferably, a rubber pad is fixed to the bottom of the connecting channel; the rubber pad is inclined; by setting a rubber pad at the bottom of the connecting channel, the direct impact of particles falling from the upper screen through the connecting channel on the bottom of the connecting channel can be reduced, which would cause the particles to break and affect the screening accuracy.

[0012] The advantages of this utility model are:

[0013] 1. The granulator particle screening device of this utility model, by setting a set of screens in the middle of the screening tank, and the mesh gaps are arranged from small to large to form a multi-layer screening structure, the particles pass through the screens of different apertures from top to bottom, and particles of different sizes can be screened out step by step, increasing the uniformity of the collected particle size. At the same time, the scraper continuously pushes the particles to move on the surface of the screen, which can reduce the accumulation of particles and blockage of the screen, and also make the particles fully contact the screen, improve the efficiency of small particles passing through the screen, and reduce the mixing of large particles.

[0014] 2. The granulator particle screening device of this utility model forms a negative pressure after the induced draft fan is turned on, which draws in and discharges the air and dust in the screening tank. The filter cloth can intercept dust particles in the air, reduce the direct emission of dust into the environment, reduce dust pollution in the workshop, and the continuous exhaust of the induced draft fan makes the airflow inside the screening tank circulate, reduce the failure of related equipment caused by dust accumulation, and increase the service life of the equipment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main body of the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the screen in this utility model;

[0018] Figure 3 This is a schematic diagram of the filter cloth structure in this utility model;

[0019] Figure 4 This is a schematic diagram of the connecting channel in this utility model;

[0020] Figure 5 This is a schematic diagram of the rotating rod in this utility model.

[0021] In the diagram: 1. Screening tank; 11. Collection box; 12. Tank lid; 13. Feed pipe; 14. Motor; 15. Rotating rod; 16. Support frame; 17. Scraper; 18. Screen; 19. Slide plate; 110. Connecting channel; 111. Outlet plate; 112. Cavity; 2. Filter cloth; 21. Exhaust fan; 3. Mounting frame; 32. Bolt; 4. Air pipe; 41. Air outlet; 5. Guide plate; 6. Rubber pad. Detailed Implementation

[0022] 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 scope of protection of the present utility model.

[0023] Specific implementation examples are given below.

[0024] like Figures 1 to 5As shown in the figure, a granulator particle screening device according to an embodiment of the present invention includes a screening tank 1; a collection box 11 is installed at the bottom of the screening tank 1; a tank cover 12 is installed at the top of the screening tank 1; a feed pipe 13 is connected to the top of the tank cover 12; a motor 14 is fixedly connected to the top of the tank cover 12; a rotating rod 15 is fixedly connected to the output end of the motor 14; a support frame 16 is fixedly connected to the bottom of the screening tank 1; the rotating rod 15 and the support frame 16 are rotatably connected; and multiple scrapers 17 are fixedly connected to the surface of the rotating rod 15. A set of screens 18 is fixedly connected to the middle of the screening tank 1; the mesh size of the screens 18 is set from small to large; a set of sliding plates 19 is fixedly connected to the middle of the screening tank 1; the sliding plates 19 are inclined; the sliding plates 19 are set below the screens 18; a connecting channel 110 is fixedly connected to the surface of the screening tank 1; the connecting channel 110 connects to the set of screens 18; an outlet plate 111 is fixedly connected to the surface of the screening tank 1; the outlet plate 111 connects to the inclined end of the sliding plate 19; during operation, the feed pipe 13 is installed in the granulation unit. At the machine outlet, the generated particles fall from the feed pipe 13 onto the surface of the screen 18. The motor 14 is turned on, causing its output end to drive the rotating rod 15 to rotate. Particles on the screen 18 surface, pushed by the scraper 17, fall onto the surface of the slide plate 19, where they separate along its inclined surface from the outlet plate 111. Particles larger than the mesh size are pushed by the scraper 17 onto the screen 18 surface and fall from the connecting channel 110 to the lower screen 18 surface. This process is repeated, and the particles are evenly collected from the lower outlet plate 111. Larger particles are collected in the collection box 11. A set of screens 18 is set in the middle of the screening tank 1, and the mesh gaps are arranged from small to large to form a multi-layer screening structure. Particles pass through screens 18 with different apertures from top to bottom, and particles of different sizes can be screened out step by step, increasing the uniformity of the collected particles. At the same time, the scraper 17 continuously pushes the particles to move on the surface of the screen 18, which can reduce the accumulation of particles and blockage of the screen 18, and also make the particles fully contact the screen 18, improving the efficiency of small particles passing through the screen 18 and reducing the mixing of large particles.

[0025] like Figures 1 to 3 As shown, a filter cloth 2 is installed at the bottom of the can lid 12; an induced draft fan 21 is installed at the top of the can lid 12. During operation, the induced draft fan 21 is turned on to exhaust the air inside the screening tank 1. When the air passes through the filter cloth 2, it is intercepted on the surface of the filter cloth 2. Dust is easily generated during particle screening. After the induced draft fan 21 is turned on, a negative pressure is formed, which draws in the air and dust in the screening tank 1 and discharges them. The filter cloth 2 can intercept dust particles in the air, reduce the direct emission of dust into the environment, and reduce dust pollution in the workshop. The induced draft fan 21 continuously draws air to form an airflow circulation inside the screening tank 1, reducing equipment failures caused by dust accumulation and increasing the service life of the equipment.

[0026] like Figure 3As shown, the filter cloth 2 includes a mounting frame 3 and bolts 32; the bottom of the can lid 12 is fixedly connected to the mounting frame 3; the filter cloth 2 is set in the middle of the mounting frame 3; the can lid 12 and the mounting frame 3 are fixed together with bolts 32; during operation, after screening, the bolts 32 are rotated to remove the filter cloth 2, and the fine powder adsorbed on the surface of the filter cloth 2 is recovered. The fine powder intercepted by the filter cloth 2 is mostly granulation raw material or incompletely formed particles. By disassembling the filter cloth 2 and recovering the fine powder on the surface of the filter cloth 2, it can be reused in the granulation process, reducing the loss of raw materials caused by direct discarding and reducing production costs. Regularly disassembling and cleaning the filter cloth 2 can increase its air permeability and increase the stability of the adsorption of the filter cloth 2.

[0027] like Figures 1 to 2 As shown, an air pipe 4 is installed at the bottom of the support frame 16; an air pump is installed at the end of the air pipe 4; a cavity 112 is located in the middle of the rotating rod 15; multiple air outlets 41 are installed on the surface of the rotating rod 15; the air pipe 4 and the air outlets 41 are connected; the air outlets 41 are connected to the air pipe 4 through the cavity 112; the air pipe 4 is located between the screen 18 and the slide plate 19; during operation, the air pump is turned on to blow out gas, which travels along the air pipe 4 through the cavity 112 and out of the air outlet 41, rotating with the rotating rod 15, blowing out the particles blocked by the mesh of the screen 18. The airflow blown out by the air pump is ejected from the air outlet 41, directly impacting the blocked particles on the screen 18, causing them to detach from the mesh, reducing the decrease in screening efficiency caused by the blockage of the screen 18. At the same time, the air outlet 41 rotates synchronously with the rotating rod 15, which can continuously blow and clean the surface of the screening tank 1 during the screening process, reducing the impact of downtime for cleaning on screening efficiency.

[0028] like Figure 2 and Figure 5 As shown, a guide plate 5 is fixed to one side of the scraper 17; the guide plate 5 is inclined; during operation, when the rotating rod 15 rotates the scraper 17 to push the particles to move, the particles move along the inclined surface of the scraper 17, reducing the accumulation of particles at the center of the screen 18. When the inclined guide plate 5 rotates with the scraper 17, the inclined surface thrust is used to disperse the particles accumulated in the center to the edge of the screen 18, so that the particles evenly cover the entire surface of the screen 18, increasing the contact area between the particles and the screen 18 and increasing the screening efficiency.

[0029] like Figure 2 , Figure 4 and Figure 5As shown, a rubber pad 6 is fixed to the bottom of the connecting channel 110; the rubber pad 6 is inclined; during operation, when particles fall from the upper screen 18 into the connecting channel 110 and to its bottom, the particles first contact the rubber pad 6 for cushioning, and then slide down its inclined surface to the surface of the lower screen 18. By setting the rubber pad 6 at the bottom of the connecting channel 110, the direct impact of particles falling from the upper screen 18 into the bottom of the connecting channel 110 can be reduced, which would cause the particles to break and affect the screening accuracy.

[0030] Working principle: By installing the feed pipe 13 at the outlet of the granulator, the generated particles fall from the feed pipe 13 onto the surface of the screen 18. The motor 14 is turned on, causing its output end to drive the rotating rod 15 to rotate. Particles on the surface of the screen 18, pushed by the scraper 17, fall onto the surface of the slide plate 19, separating along its inclined surface from the outlet plate 111. Particles larger than the mesh size are pushed by the scraper 17 onto the surface of the screen 18 and fall from the connecting channel 110 to the surface of the lower screen 18. This process is repeated, and the particles are evenly collected from the lower outlet plate 111. Larger particles are collected in the collection box 11. The induced draft fan 21 is turned on to expel the air from inside the screening tank 1. As the air passes through the filter cloth 2, it is intercepted on the surface of the filter cloth 2. Dust is easily generated during particle screening. After screening, turn bolt 32 to remove filter cloth 2 and recover the fine powder adsorbed on the surface of filter cloth 2. The fine powder intercepted by filter cloth 2 is mostly granulation raw material or incompletely formed particles. Turn on the air pump to blow out gas, which is blown out from the air outlet 41 through the cavity 112 along the air pipe 4 and rotates with the rotating rod 15 to blow out the particles blocked by the mesh of screen 18. When the rotating rod 15 rotates and the scraper 17 pushes the particles to move, the particles move along the inclined surface of the scraper 17 to reduce the accumulation of particles in the center of screen 18. When the particles fall from the upper screen 18 into the connecting channel 110 to the bottom, the particles first contact the rubber pad 6 for cushioning, and then slide down its inclined surface to the surface of the lower screen 18.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A granulator particle sizing apparatus characterized by: Includes a screening tank (1); a collection box (11) is installed at the bottom of the screening tank (1); a tank cover (12) is installed at the top of the screening tank (1); a feed pipe (13) is connected to the top of the tank cover (12); a motor (14) is fixedly connected to the top of the tank cover (12); a rotating rod (15) is fixedly connected to the output end of the motor (14); a support frame (16) is fixedly connected to the bottom of the screening tank (1); the rotating rod (15) and the support frame (16) are rotatably connected; multiple scrapers (17) are fixedly connected to the surface of the rotating rod (15); the screening... A set of screens (18) is fixedly connected to the middle of the tank (1); the mesh gap of the screens (18) is set from small to large; a set of sliding plates (19) is fixedly connected to the middle of the screening tank (1); the sliding plates (19) are set at an angle; the sliding plates (19) are set below the screens (18); a connecting channel (110) is fixedly connected to the surface of the screening tank (1); the connecting channel (110) connects to the set of screens (18); an outlet plate (111) is fixedly connected to the surface of the screening tank (1); the outlet plate (111) connects to the end of the inclined surface of the sliding plate (19).

2. A granulator particle sizing device according to claim 1, characterised in that: A filter cloth (2) is installed at the bottom of the can lid (12); a blower (21) is installed at the top of the can lid (12).

3. A granular screening apparatus for a granulator as claimed in claim 2, wherein: The filter cloth (2) includes a mounting frame (3) and bolts (32); the bottom of the can lid (12) is fixed to the mounting frame (3); the filter cloth (2) is set in the middle of the mounting frame (3); the can lid (12) and the mounting frame (3) are fixed together with bolts (32).

4. A granular screening apparatus for a granulator as claimed in claim 3, wherein: The support frame (16) is equipped with an air pipe (4) at its bottom; an air pump is installed at the end of the air pipe (4); the rotating rod (15) has a cavity (112) in the middle; multiple air outlets (41) are installed on the surface of the rotating rod (15); the air pipe (4) and the air outlets (41) are connected; the air outlets (41) are connected to the air pipe (4) through the cavity (112); the air pipe (4) is set between the screen (18) and the slide plate (19).

5. A granular screening apparatus for a granulator as claimed in claim 4, wherein: A guide plate (5) is fixedly connected to one side of the scraper (17); the guide plate (5) is inclined.

6. A granulator particle screening device according to claim 5, characterized in that: A rubber pad (6) is fixed to the bottom of the connecting channel (110); the rubber pad (6) is inclined.

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