A high efficiency granulator
The high-efficiency pellet mill, designed with a combination of a spiral conveyor shaft and an axial flow impeller, solves the problems of smooth material discharge and particle adhesion, achieving efficient pelleting and preventing sticking.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNMING PHARMA GRP JINTAIDE PHARMA
- Filing Date
- 2025-06-17
- Publication Date
- 2026-07-03
AI Technical Summary
Existing pellet mills have poor material discharge at the outlet, resulting in low pelleting efficiency and the produced pellets are prone to agglomeration and clumping, which greatly limits their use.
The design combines a spiral conveyor shaft and an axial impeller. The spiral conveyor shaft compresses the material, while the axial impeller creates an airflow to cut off and move the particles upward. Combined with the design of a guide hood and guide plate, it prevents the particles from accumulating and sticking together. At the same time, it uses an evaporator to cool down and prevent freezing.
It improves the smoothness of material discharge, prevents particles from sticking together, enhances granulation efficiency, ensures smooth discharge of particles, and avoids agglomeration.
Smart Images
Figure CN224442909U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of granulation equipment, and in particular to a high-efficiency granulator. Background Technology
[0002] As is well known, a granulator is a mechanical device that processes materials into particles of a specific shape and size through physical action (extrusion, rolling, compression, etc.), and it is widely used in the pharmaceutical, chemical, and food industries.
[0003] For example, Chinese utility model patent with publication number CN216024717U discloses a rotary granulator for processing traditional Chinese medicine, which includes a feeding cylinder and a stirring component for rotary granulation of traditional Chinese medicine. The stirring component includes a discharge cylinder located below the feeding cylinder, a guide plate located below the discharge cylinder, blades located inside the discharge cylinder, a connecting rod located at one end of the blades, and a motor located at one end of the connecting rod. It solves the problem of low granulation efficiency of traditional rotary granulators for processing traditional Chinese medicine.
[0004] However, the above-mentioned device still has the following drawbacks: the material is squeezed out at the discharge port by rotation and centrifugal force, resulting in poor material discharge smoothness and thus affecting granulation efficiency; the granules produced aggregate and stick together after falling, causing some granulated particles to clump together, which has certain limitations in use. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a high-efficiency granulator that improves granulation efficiency while effectively preventing granules from sticking together.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency granulator, comprising a shell, a conveying cylinder installed in the middle of the shell, a spiral conveying shaft rotatably installed inside the conveying cylinder, and a guide core cylinder fixedly installed inside the shell. The guide core cylinder is sleeved on the outer wall of the conveying cylinder. A first motor providing power for the rotation of the spiral conveying shaft is installed at the top of the shell. Multiple granulation holes communicating with the interior of the conveying cylinder are provided at the lower part of the conveying cylinder. A second motor is installed at the bottom of the guide core cylinder. An axial flow impeller and a scraper assembly are installed on the output shaft of the second motor. The scraper assembly fits into the outer wall of the conveying cylinder. A guide cover is fixedly installed on the upper part of the shell, covering the upper part of the guide core cylinder. A guide plate is provided between the guide core cylinder and the shell. The shell has a discharge port corresponding to the guide plate. Further, the scraper assembly is fixedly installed at the top center of the axial flow impeller, and the outer diameter of the axial flow impeller matches the inner diameter of the guide core cylinder.
[0007] Preferably, an evaporator is fixedly installed in the lower part of the cylinder shell; further, the evaporator is used to cool the air at the bottom of the cylinder shell; the evaporator is used in conjunction with an external compressor, radiator, etc., and is used for the vaporization and heat absorption of the refrigerant; it should be noted that the conveying cylinder needs to be insulated to prevent the material inside the conveying cylinder from freezing.
[0008] Preferably, it also includes a connecting ventilation duct, and a discharge cavity is formed between the inner wall of the cylinder shell, the outer wall of the guide core cylinder, the guide cover and the guide plate. One end of the connecting ventilation duct is connected to the inside of the discharge cavity, and the other end of the discharge cavity extends into the lower part of the cylinder shell.
[0009] Preferably, it also includes a feeding pipe with its input end extending outward from the cylinder shell, the output end of the feeding pipe communicating with the inside of the conveying cylinder, and an open feeding hopper installed at the input end of the feeding pipe.
[0010] Preferably, the end of the guide plate near the discharge port is inclined toward the discharge port.
[0011] Preferably, the outer wall of the cylinder shell is provided with an observation window that communicates with the discharge chamber and the interior of the cylinder shell.
[0012] Preferably, the upper part of the guide core cylinder is provided with a constricted part, and the guide cover is a semi-circular shell shape; further, the opening of the semi-circular shell-shaped guide cover faces downward, and the guide cover can also be an inverted conical shell.
[0013] Compared with the prior art, this utility model provides a high-efficiency pellet mill with the following beneficial effects: This high-efficiency pellet mill, by adding material into the conveying cylinder, the first motor drives the screw conveyor shaft to rotate, so that the material is squeezed to the lower part of the conveying cylinder and discharged outward through the discharge hole. The second motor drives the axial flow impeller and scraper assembly to rotate. The scraper assembly cuts the material discharged from the discharge hole. During the rotation of the axial flow impeller, an upward airflow is formed in the guide core cylinder. The cut particles move upward along the guide core cylinder under the action of the airflow, overcoming gravity. The particles are guided by the guide cover to the space between the cylinder shell and the outer wall of the guide core cylinder. After the particles fall to the guide plate, they are discharged outward through the discharge port. This can avoid the particles from accumulating and sticking together after falling. At the same time, the extrusion feeding by the screw conveyor shaft can greatly improve the smoothness of the material discharge at the discharge port. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0015] Figure 2 This is a schematic diagram of the internal cross-sectional plane structure of this utility model;
[0016] Figure 3 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;
[0017] Figure 4 This is the utility model Figure 3 Schematic diagram of the cross-sectional structure at point BB;
[0018] Figure 5 This is a schematic diagram of the connection relationship between the scraper assembly and the outer wall of the conveying cylinder of this utility model;
[0019] The following are labels in the attached diagram: 1. Shell; 2. Conveying cylinder; 3. Screw conveyor shaft; 4. Guide core cylinder; 5. First motor; 6. Particle outlet; 7. Second motor; 8. Axial flow impeller; 9. Scraper assembly; 10. Guide cover; 11. Guide plate; 12. Discharge port; 13. Evaporator; 14. Connecting ventilation duct; 15. Feeding pipe; 16. Open feeding hopper; 17. Observation window; 18. Narrowing section. Detailed Implementation
[0020] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0021] As described in the background art, a rotary granulator for processing traditional Chinese medicine uses rotational stirring and centrifugal force to force the material to be squeezed out at the discharge port. The material discharge is not smooth, which affects the granulation efficiency. The granules produced agglomerate and stick together after falling, causing some granules to clump together, which has certain limitations in use.
[0022] To solve this technical problem, this utility model provides a high-efficiency granulator, which is applied to the granulation processing of traditional Chinese medicine.
[0023] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Example 1
[0025] Please refer to Figure 1-5A high-efficiency granulator specifically includes: a shell 1, a conveying cylinder 2 installed in the middle of the shell 1, a spiral conveying shaft 3 rotatably installed inside the conveying cylinder 2, and a guide core cylinder 4 fixedly installed inside the shell 1. The guide core cylinder 4 is sleeved on the outer wall of the conveying cylinder 2. A first motor 5 is installed at the top of the shell 1 to provide power for the rotation of the spiral conveying shaft 3. The lower part of the conveying cylinder 2 is provided with multiple granulation holes 6 communicating with the interior of the conveying cylinder 2. A second motor 7 is installed at the bottom of the guide core cylinder 4. An axial flow impeller 8 and a scraper assembly 9 are installed on the output shaft of the second motor 7. The scraper assembly 9 fits with the outer wall of the conveying cylinder 2. A guide cover 10 is fixedly installed on the upper part of the shell 1. The guide cover 10 covers the upper part of the guide core cylinder 4. A guide plate 11 is provided between the guide core cylinder 4 and the shell 1. The shell 1 is provided with a discharge port 12 corresponding to the guide plate 11. Furthermore, the scraper assembly 9 is fixedly installed at the top center of the axial flow impeller 8, and the outer diameter of the axial flow impeller 8 matches the inner diameter of the guide core cylinder 4.
[0026] For details, please refer to Figure 2 It also includes a feeding pipe 15 extending from the input end to the outside of the cylinder shell 1, the output end of the feeding pipe 15 being connected to the inside of the conveying cylinder 2, and an open feeding hopper 16 being installed at the input end of the feeding pipe 15.
[0027] For details, please refer to Figure 3 The guide plate 11 is inclined towards the discharge port 12 at one end.
[0028] For details, please refer to Figure 2 or Figure 3 The upper part of the guide core cylinder 4 is provided with a constricted part 18, and the guide cover 10 is a semi-circular shell shape; furthermore, the opening of the semi-circular shell-shaped guide cover 10 faces downward, and the guide cover 10 can also adopt an inverted conical shell shape.
[0029] The high-efficiency granulator provided in this embodiment can put the material into the open feeding hopper 16 and guide the material to the conveying cylinder 2 through the feeding pipe 15; the guide plate 11 is inclined so that the granules can slide more smoothly to the discharge port 12 and avoid the granules from staying too long at the guide plate 11; under the action of the constriction part 18, the airflow in the guide core cylinder 4 can be gathered at the guide hood 10 to ensure that the granules in the guide core cylinder 4 can smoothly escape from the guide core cylinder 4.
[0030] For details, please refer to Figure 2 or Figure 3 An evaporator 13 is fixedly installed in the lower part of the shell 1; furthermore, the evaporator 13 is used to cool the air at the bottom of the shell 1; the evaporator 13 is used in conjunction with an external compressor, radiator, etc., and is used for the vaporization and heat absorption of the refrigerant; it should be noted that the conveying cylinder 2 needs to be insulated to prevent the material inside the conveying cylinder 2 from freezing.
[0031] For details, please refer to Figure 3 It also includes a connecting ventilation duct 14, and a discharge chamber is formed between the inner wall of the cylinder shell 1, the outer wall of the guide core cylinder 4, the guide cover 10 and the guide plate 11. One end of the connecting ventilation duct 14 is connected to the inside of the discharge chamber, and the other end of the discharge chamber extends into the lower part of the cylinder shell 1.
[0032] For details, please refer to Figure 1 An observation window 17 is provided on the outer wall of the shell 1, which communicates with the discharge chamber and the interior of the shell 1.
[0033] The high-efficiency granulator provided in this embodiment can cool the air at the bottom of the cylinder shell 1 under the action of the evaporator 13, thereby reducing the temperature of the air entering the guide core cylinder 4. When the temperature drops below -10 degrees Celsius, the granulated particles solidify rapidly after being cooled, thereby further preventing the granulated particles from sticking together. Under the action of the connecting ventilation duct 14, the cold airflow can be promoted to circulate in the bottom of the cylinder shell 1, in the guide core cylinder 4 and in the connecting ventilation duct 14, reducing the cold airflow from escaping outward, thereby ensuring that the guide core cylinder 4 is in a low-temperature state, which is conducive to the solidification and granulation of the produced particles. The observation window 17 allows the operator to observe the discharge of the produced particles in the discharge chamber and the operation of the second motor 7 in real time.
[0034] The high-efficiency granulator provided by this utility model is used as follows: The material is added into the conveying cylinder 2 through the open feeding hopper 16 and the feeding pipe 15. The first motor 5 drives the spiral conveying shaft 3 to rotate, so that the material is squeezed into the lower part of the conveying cylinder 2 and discharged outward through the particle outlet 6. The second motor 7 drives the axial flow impeller 8 and the scraper assembly 9 to rotate. The scraper assembly 9 cuts the material discharged from the particle outlet 6. During the rotation of the axial flow impeller 8, the cold air cooled by the evaporator 13 is drawn into the guide core cylinder 4. The cut material is quickly solidified. During the rotation of the axial flow impeller 8, an upward airflow is formed in the guide core cylinder 4. The cut particles move upward along the guide core cylinder 4 against gravity under the action of the airflow. The particles are guided into the space between the cylinder shell 1 and the outer wall of the guide core cylinder 4 through the guide cover 10. After the particles fall to the guide plate 11, they are discharged outward through the discharge port 12.
[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
Claims
1. A high efficiency granulator characterized by, The system includes a cylindrical shell (1), a conveying cylinder (2) installed in the middle of the cylindrical shell (1), a spiral conveying shaft (3) rotatably installed inside the conveying cylinder (2), and a guide core cylinder (4) fixedly installed inside the cylindrical shell (1). The guide core cylinder (4) is sleeved on the outer wall of the conveying cylinder (2). A first motor (5) is installed at the top of the cylindrical shell (1) to provide power for the rotation of the spiral conveying shaft (3). The lower part of the conveying cylinder (2) is provided with multiple particle outlet holes (6) communicating with the interior of the conveying cylinder (2). The guide core cylinder (4) A second motor (7) is installed at the bottom. An axial flow impeller (8) and a scraper assembly (9) are installed on the output shaft of the second motor (7). The scraper assembly (9) fits into the outer wall of the conveying cylinder (2). A guide cover (10) is fixedly installed on the upper part of the cylinder shell (1). The guide cover (10) covers the upper part of the guide core cylinder (4). A guide plate (11) is provided between the guide core cylinder (4) and the cylinder shell (1). A discharge port (12) corresponding to the guide plate (11) is provided on the cylinder shell (1).
2. The high efficiency granulator of claim 1 wherein, An evaporator (13) is fixedly installed in the lower part of the inner shell (1).
3. The high efficiency granulator of claim 2 wherein, It also includes a connecting ventilation channel (14), and a discharge cavity is formed between the inner wall of the cylinder shell (1), the outer wall of the guide core cylinder (4), the guide cover (10) and the guide plate (11). One end of the connecting ventilation channel (14) is connected to the inside of the discharge cavity, and the other end of the discharge cavity extends into the lower part of the cylinder shell (1).
4. The high efficiency granulator of claim 1 wherein, It also includes a feeding pipe (15) extending from the input end to the outside of the cylinder shell (1), the output end of the feeding pipe (15) being connected to the inside of the conveying cylinder (2), and an open feeding hopper (16) being installed at the input end of the feeding pipe (15).
5. The high efficiency granulator of claim 1 wherein, The guide plate (11) is inclined towards the discharge port (12) at one end.
6. The high efficiency granulator of claim 3 wherein, The outer wall of the cylinder (1) is provided with an observation window (17) that communicates with the discharge chamber and the interior of the cylinder (1).
7. The high efficiency granulator of claim 1 wherein, The upper part of the guide core cylinder (4) is provided with a constricted part (18), and the guide cover (10) is a semi-circular shell shape.