Granulator

Abstract

The utility model relates to the technical field of pharmaceutical and chemical equipment, in particular to a granulating machine, which is characterized in that a buffer pipe is arranged at the lower end of a storage tank, a first granulating cutter and a second screen are arranged in the storage tank, the first granulating cutter is used for primarily granulating materials, and the second granulating cutter in the buffer pipe is used for secondarily granulating the materials; the production efficiency can be effectively improved, the abrasion of the second granulating cutter is reduced, and the risk that materials are blocked in the buffer pipe is also reduced; the inclined downward ventilation holes are formed in the side wall of the buffer pipe, airflow is blown in during granulation to improve the speed of the materials subjected to primary granulation flowing into the buffer pipe, the secondary granulation effect is further improved, the materials and the second granulation cutter can be cooled, the service life of the second granulation cutter is further prolonged, and the granulation quality of the materials is further improved.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical and chemical equipment technology, and in particular to a granulator. Background Technology

[0002] In many industrial production processes, such as pharmaceuticals, food processing, and chemicals, it is often necessary to process lumpy or agglomerated materials into granules that meet specific particle size requirements. Granulators, as key equipment for achieving this goal, directly affect product quality and production efficiency through their performance and structure. Traditional granulators often suffer from low granulation efficiency and are prone to material blockage. Utility Model Content

[0003] To achieve the above objectives, this utility model provides a granulator, comprising:

[0004] The storage tank is equipped with a first sizing knife and a first screen inside. The upper end of the storage tank is equipped with a first drive source and a feeding pipe. The first drive source is used to drive the first sizing knife to rotate.

[0005] A buffer tube is connected to the lower end of the storage tank. A second sizing knife and a second screen are installed inside the buffer tube. A second drive source and an air supply pipe are installed on the outside of the buffer tube. The second drive source is used to drive the second sizing knife to rotate. A ventilation hole is opened on the side wall of the buffer tube. The ventilation hole is located above the second sizing knife. The ventilation hole is connected to the air supply pipe and is inclined downward.

[0006] The mesh count of the second screen is greater than that of the first screen.

[0007] In some possible embodiments, the first sizing knife rotates clockwise, the second sizing knife rotates counterclockwise, and the air supply pipe blows gas from the ventilation hole into the buffer tube, forming a reverse turbulent airflow within the buffer tube.

[0008] In some possible embodiments, the ventilation holes are a plurality of those holes and are evenly distributed circumferentially on the inner wall of the buffer tube.

[0009] In some possible embodiments, a guide ring with a gradually decreasing inner diameter is formed at the lower end of the storage tank, the first sizing knife is disposed at the lower end of the guide ring, and the minimum inner diameter of the guide ring is greater than the maximum outer diameter of the first sizing knife.

[0010] In some possible embodiments, the system further includes a base on which a column is fixedly mounted, a movable seat is provided on the column, a third drive source is provided on the top of the column, the third drive source is capable of driving the movable seat to rise and fall relative to the column, and the storage tank is mounted on the movable seat.

[0011] In some possible embodiments, a support frame is also fixedly installed at the bottom of the storage tank, and the first granulator and the first screen are both mounted on the support frame, with the first granulator rotatable relative to the support frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The granulator of this utility model is equipped with a buffer tube at the lower end of the storage tank, and a first granulating knife and a second screen are installed inside the storage tank. The first granulating knife performs initial granulation of the material, and the second granulating knife in the buffer tube performs secondary granulation. This can effectively improve production efficiency and reduce the wear of the second granulating knife, as well as reduce the risk of material clogging in the buffer tube. Inclined downward ventilation holes are opened on the side wall of the buffer tube, and airflow is blown in during granulation to increase the rate at which the material initially granulated flows into the buffer tube, further improving the effect of secondary granulation. Moreover, it can cool the material and the second granulating knife, further improving the service life of the second granulating knife and the granulation quality of the material. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0014] Figure 1 This is a three-dimensional structural diagram of the granulator according to an embodiment of the present invention;

[0015] Figure 2 This is a cross-sectional schematic diagram of the storage tank portion according to an embodiment of the present utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the buffer tube portion in an embodiment of the present invention.

[0017] Reference numerals: base 10, column 11, movable seat 12, third drive source 13, storage tank 20, first sizing knife 21, first screen 22, first drive source 23, feeding pipe 24, guide ring 25, support frame 26, buffer pipe 30, second sizing knife 31, second screen 32, second drive source 33, air supply pipe 34, ventilation hole 35. Detailed Implementation

[0018] 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. Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0019] Reference Figures 1 to 3 The pelletizing machine shown includes a storage tank 20 and a buffer tube 30 disposed at the lower end of the storage tank 20. A first drive source 23 and a feeding pipe 24 are disposed at the upper end of the storage tank 20. Material is conveyed into the storage tank 20 through the feeding pipe 24. A first pelletizing blade 21 and a first screen 22 are also disposed inside the storage tank 20. The first pelletizing blade 21 is located above the first screen 22. The first drive source 23 drives the first pelletizing blade 21 to rotate, so that the first pelletizing blade 21 cooperates with the first screen 22 to perform initial pelletizing of the material in the storage tank 20. A second pelletizing blade 31 and a second screen 32 are disposed inside the buffer tube 30. The second pelletizing blade 31 is located above the second screen 32. The mesh size of the second screen 32 is larger than that of the first screen 22. A second drive source 33 and a feeding pipe 24 are disposed on the outer side of the buffer tube 30. The air duct 34 and the second drive source 33 are used to drive the second granulator 31 to rotate, so that the second granulator 31 cooperates with the second screen 32 to re-granulate the material after the initial granulation. This can effectively improve production efficiency and reduce the wear of the second granulator 31, as well as reduce the risk of material clogging in the buffer tube 30. The inner wall of the buffer tube 30 is provided with a ventilation hole 35 that connects to the feed pipe. The ventilation hole 35 is located above the second granulator 31 and is inclined downward. The air supply duct 34 is connected to an external fan. The air blown in from the ventilation hole 35 can not only cool the material after the initial granulation and the second granulator 31 to ensure the quality of the material after granulation and improve the service life of the second granulator 31, but also prevent the material from agglomerating or adhering to the buffer tube 30 due to heat, which would cause the buffer tube 30 to become clogged.

[0020] In some possible embodiments, the first drive source 23 drives the first sizing knife 21 to rotate forward, the second drive source 33 drives the second sizing knife 31 to rotate in reverse, and gas is blown into the buffer tube 30 at an angle from the ventilation hole 35 to form a reverse spiral turbulent airflow in the buffer tube 30, which drives the material after the initial sizing to move towards the second sizing knife 31, thereby increasing the kinetic energy of the second sizing knife 31 and the second screen 32 to crush the material, and further improving the quality of the second sizing.

[0021] In some possible embodiments, there are several ventilation holes 35 and they are evenly distributed circumferentially on the inner wall of the buffer tube 30. The purpose of this is to increase airflow to enhance cooling within the buffer tube 30 and accelerate the re-granulation effect.

[0022] In some possible embodiments, a guide ring 25 with a gradually decreasing inner diameter is formed at the lower end of the storage tank 20. Material or debris can fall along the side wall of the guide ring 25 to avoid material or debris accumulating in the storage tank 20. The first granulator 21 is set at the lower end of the guide ring 25. The minimum radius of the guide ring 25 is larger than the maximum radius of the first granulator 21 to ensure that the falling material can be initially granulated by the first granulator 21 before falling into the buffer tube 30.

[0023] In some possible embodiments, refer to Figure 1 As shown, the granulator of this utility model also includes a base 10, on which a column 11 is fixedly installed. A third driving source 13 for lifting is provided on the top of the column 11. The third driving source 13 can drive the movable seat 12 to rise and fall relative to the column 11. The storage tank 20 is installed on the movable seat 12 and rises and falls with the movable seat 12.

[0024] In some possible embodiments, refer to Figure 2 As shown, a support frame 26 is fixedly installed at the bottom of the storage tank 20. The first sizing knife 21 and the first screen 22 are both installed on the support frame 26. The lower end of the first screen 22 is fixed to the support frame 26 by bolts, and its upper end can be welded or bolted to the lower end of the guide ring 25. The first sizing knife 21 is rotatably mounted on the support frame 26. This design can improve the stability of the connection between the first sizing knife 21 and the first screen 22 in the storage tank 20.

[0025] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A sizing machine characterized by, The utility model relates to a kind of grain screening device, including: Storage tank (20), first whole grain knife (21) and first screen (22) are arranged inside, the upper end of the storage tank (20) is provided with first drive source (23) and feeding tube (24), the first drive source (23) is used to drive the first whole grain knife (21) rotation; Buffer tube (30) is communicated with the lower end of the storage tank (20), second whole grain knife (31) and second screen (32) are arranged in the buffer tube (30), the outer side of the buffer tube (30) is provided with second drive source (33) and air supply pipe (34), the second drive source (33) is used to drive the second whole grain knife (31) rotation, the side wall of the buffer tube (30) is opened with air vent (35), the air vent (35) is arranged above the second whole grain knife (31), the air vent (35) is communicated with the air supply pipe (34) and is inclined downward arrangement; The mesh number of the second screen (32) is greater than the mesh number of the first screen (22).

2. A sizing machine according to claim 1, wherein, The first whole grain knife (21) is positive rotation, the second whole grain knife (31) is reversed, the air supply pipe (34) blows gas from the air vent (35) into the buffer tube (30), and forms reverse disturbance airflow in the buffer tube (30).

3. A sizing machine according to claim 2, wherein, The air vent (35) has several and is evenly distributed in the inner wall of the buffer tube (30) along the circumference.

4. A sizing machine according to claim 1, wherein, The lower end of the storage tank (20) is formed with flow guide ring (25) that inner diameter gradually decreases, the first whole grain knife (21) is arranged at the lower end of the flow guide ring (25), and the minimum inner diameter of the flow guide ring (25) is greater than the maximum outer diameter of the first whole grain knife (21).

5. A sizing machine according to claim 1 wherein, It further includes base (10), the vertical column (11) is fixedly installed on the base (10), the moving seat (12) is arranged on the vertical column (11), the third drive source (13) is arranged on the top of the vertical column (11), the third drive source (13) can drive the moving seat (12) to lift relative to the vertical column (11), the storage tank (20) is installed on the moving seat (12).

6. A sizing machine according to claim 1 wherein, The bottom of the storage tank (20) is further fixedly installed with support frame (26), the first whole grain knife (21) and the first screen (22) are installed on the support frame (26), and the first whole grain knife (21) can rotate relative to the support frame (26).

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