Dust removal device of granulator
The multi-stage dust removal system solves the problem of simultaneously handling dust in the granulation cylinder and the treatment cylinder in existing technologies, achieving efficient dust capture and filtration and meeting environmental protection standards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI TIANBI RENEWABLE RESOURCES CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-17
AI Technical Summary
Existing dust removal devices for granulators are unable to efficiently handle dust in both the granulation cylinder and the processing cylinder simultaneously, failing to meet increasingly stringent environmental standards.
A multi-stage dust removal system was designed, including a dust collection hood, an air purifier, a first fan, a treatment cylinder, a dust collection hood, and a third fan. Through the combination of multi-stage fans and filter plates, efficient capture and filtration of dust from different sources can be achieved.
It significantly improves dust removal efficiency, reduces dust emissions and environmental pollution, and meets increasingly stringent environmental standards.
Smart Images
Figure CN224128188U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of dust removal technology for granulators, specifically a dust removal device for granulators. Background Technology
[0002] Plastic granulators generate a large amount of dust and impurities during the granulation process. The dust removal device of the granulator is a piece of equipment used to collect and treat the dust generated during the plastic granulation process, so as to reduce dust emissions, protect the environment and ensure production safety.
[0003] The specific design and structure of the dust removal device for a granulator may vary depending on the manufacturer and application requirements, but generally they include the following key parts: air inlet, cylinder, and cone. The air inlet is the channel through which dust-laden gas enters the dust collector, and is usually designed as a rectangle or circle, allowing the gas to enter the dust collector tangentially at a certain speed and angle. The cylinder is the main part of the cyclone dust collector, and is cylindrical in shape. The dust-laden gas rotates inside the cylinder, generating centrifugal force to separate the dust. The cone is located below the cylinder and is in the shape of an inverted cone. As the diameter of the cone gradually decreases, the radius of rotation of the airflow becomes smaller, and the centrifugal force increases, which helps the dust to be further separated and settle downwards.
[0004] Currently, existing dust removal devices for granulators typically only remove dust from plastic raw materials. Traditional single dust removal methods cannot simultaneously address the exhaust gas and dust generated during granulation in the granulation cylinder as well as the dust generated during material pretreatment within the cylinder. Single dust removal equipment is often inefficient when handling large amounts of dust-laden exhaust gas. With increasingly stringent environmental standards, traditional single dust removal methods are unlikely to meet the dust emission standards of granulators. Utility Model Content
[0005] To overcome the shortcomings of existing technologies and address the problems existing in current equipment, this utility model proposes a dust removal device for a granulator.
[0006] The technical solution adopted by this utility model to solve its technical problem is a dust removal device for a granulator, including a base, an mounting block on the base, a granulation cylinder on the mounting block, a granulation mold at the top of the granulation cylinder, a gas collection hood at the top of the granulation cylinder, a first fan on the base, an exhaust pipe on the first fan, the other end of the exhaust pipe being connected to the gas collection hood, an air purifier on the side of the first fan, an exhaust pipe on the first fan, the other end of the exhaust pipe being connected to the air purifier; and a processing unit on the granulation cylinder. The system comprises a processing cylinder equipped with a feed pipe, an internal solenoid valve, a second blower mounted on a base, an air duct mounted on the second blower with its other end connected to the inside of the processing cylinder and positioned above the solenoid valve, a dust collection hood on the processing cylinder, an mounting plate on the processing cylinder, a third blower mounted on the mounting plate, a dust collection box on the processing cylinder, a filter plate inside the dust collection box, a dust removal pipe at the top of the dust collection box with its other end mounted on the dust collection hood, and the third blower connected to the bottom of the dust collection box via a suction pipe.
[0007] Preferably, the granulation cylinder is provided with a heating layer, and a heating tube is provided inside the heating layer. The heating tube inside the heating layer can heat the granulation cylinder, so that the material inside the granulation cylinder can be granulated under suitable temperature conditions. By controlling the heating temperature of the heating tube, the temperature during the granulation process can be precisely controlled, which helps to improve the quality and performance of the particles, so that the material can be better plasticized and shaped, and reduce particle quality problems caused by uneven or unsuitable temperature.
[0008] Preferably, a motor support is provided on the side of the granulation cylinder, and a granulation motor is installed on the motor support. An auger shaft is rotatably installed inside the granulation cylinder, and auger blades are provided on the auger shaft. The output end of the granulation motor is fixedly connected to the top end of the auger shaft. The granulation motor drives the auger shaft to rotate, and the auger blades on the auger shaft rotate accordingly, thereby conveying the material in the granulation cylinder from one end to the other end. During the conveying process, the material is stirred, mixed, and extruded, so that the material can be fully mixed and uniform and gradually form granules, which helps to improve the efficiency and quality of granulation and ensure the uniformity and consistency of the granules.
[0009] Preferably, the dust collection box is equipped with a sealing door and a sealing handle. The sealing door facilitates regular cleaning of dust and particles inside the dust collection box by the staff, while the sealing handle ensures that the sealing door has good sealing performance when closed, preventing dust and particles from leaking out from the sealing door, thus ensuring the dust collection effect of the dust collection box and the cleanliness of the working environment.
[0010] Preferably, the air purifier is model SSDLZUV-20K and the solenoid valve is model J29W-160P. Selecting appropriate models of air purifiers, solenoid valves, and other equipment can ensure that their performance meets the working requirements of the device and guarantee the stable operation and efficient work of the entire system.
[0011] Preferably, the No. 1 fan, the No. 2 fan, the air purifier, and the No. 3 fan are all electrically connected to an external power source, which facilitates the control and operation of the equipment, realizes automated production, and improves production efficiency and product quality stability.
[0012] The advantages of this invention are: it constructs a comprehensive multi-stage dust removal system. A gas collection hood is installed at the top of the granulation cylinder, which, together with a No. 1 fan and an air purifier, can collect and purify a large amount of waste gas and dust generated during the granulation process in a timely manner. At the same time, a dust collection hood is also installed on the processing cylinder, which, together with a No. 3 fan and a dust collection box, collects and filters the dust generated inside the processing cylinder. Compared with the traditional single dust removal method, this multi-stage dust removal method can capture dust from different sources and with different particle sizes more efficiently, significantly improving the dust removal effect and greatly reducing the pollution of the environment caused by dust emissions. Attached Figure Description
[0013] 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.
[0014] Figure 1 This is a schematic diagram of the overall structure from a first-person perspective;
[0015] Figure 2 This is a schematic diagram of the overall structure from a second-person perspective;
[0016] Figure 3 This is a schematic diagram of the granulation device.
[0017] Figure 4 This is a schematic diagram of the dust removal device.
[0018] Figure 5 This is a schematic diagram of the dust collector structure;
[0019] In the diagram: 1. Base; 2. Mounting block; 3. Granulation cylinder; 4. Motor bracket; 5. Granulation motor; 6. Screw shaft; 7. Screw blade; 8. Granulation mold; 9. Heating layer; 10. Heating tube; 11. Gas collection hood; 12. No. 1 fan; 13. Air purifier; 14. Exhaust pipe; 15. Exhaust pipe; 16. Processing cylinder; 17. Solenoid valve; 18. Feed pipe; 19. Mounting plate; 20. No. 3 fan; 21. Dust collection box; 22. Filter plate; 23. Sealing door; 24. Dust removal pipe; 25. Dust collection hood; 26. No. 2 fan; 27. Air duct; 29. Sealing handle. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1-5 As shown, a dust removal device for a granulator includes a base 1, an mounting block 2 on the base 1, a granulation cylinder 3 on the mounting block 2, a granulation mold 8 at the top of the granulation cylinder 3, a gas collection hood 11 at the top of the granulation cylinder 3, a first fan 12 on the base 1, an exhaust pipe 14 on the first fan 12, the other end of the exhaust pipe 14 being connected to the gas collection hood 11, an air purifier 13 on the side of the first fan 12, and an exhaust pipe 15 on the first fan 12, the other end of the exhaust pipe 15 being connected to the air purifier 13.
[0022] During operation, in order to treat the waste gas generated during the granulation process, the waste gas and dust generated during the granulation process rise, and the No. 1 fan 12 on the base 1 is started. The dust-containing waste gas in the gas collection hood 11 is extracted through the air extraction pipe 14 and sent to the air purifier 13 through the exhaust pipe 15. The air purifier 13 purifies the waste gas, removing pollutants such as dust and harmful gases. The purified air is then discharged.
[0023] The granulation cylinder 3 is equipped with a processing cylinder 16, a feed pipe 18, and a solenoid valve 17. A second blower 26 is mounted on the base 1, and an air duct 27 is mounted on the second blower 26. The other end of the air duct 27 is connected to the inside of the processing cylinder 16 and is positioned above the solenoid valve 17. A dust collection hood 25 is mounted on the processing cylinder 16, and an mounting plate 19 is mounted on the processing cylinder 16. A third blower 20 is mounted on the mounting plate 19. A dust collection box 21 is mounted on the processing cylinder 16, and a filter plate 22 is installed inside the dust collection box 21. A dust removal pipe 24 is mounted at the top of the dust collection box 21, and the other end of the dust removal pipe 24 is mounted on the dust collection hood 25. The third blower 20 is connected to the bottom of the dust collection box 21 via a suction pipe.
[0024] During operation, in order to treat the dust and impurities on the plastic raw materials, the raw materials are fed into the processing cylinder 16 through the feed pipe 18. The second fan 26 on the base 1 sends air into the processing cylinder 16 through the air duct 27. The airflow flows above the solenoid valve 17, which helps to stir the raw materials and make them more evenly mixed. On the other hand, it raises the dust generated during the raw material processing. The third fan 20 installed on the mounting plate 19 is started, and a suction force is generated at the bottom of the dust collection box 21 through the dust suction pipe. The dust-laden air enters the dust collection box 21 from the dust collection hood 25 through the dust removal pipe 24. The filter plate 22 in the dust collection box 21 filters the dust-laden air, and the dust is intercepted on one side of the filter plate 22. The purified air is drawn out and discharged by the third fan 20. When the dust in the dust collection box 21 accumulates to a certain level, the sealing door 23 can be opened through the sealing handle 29 on the sealing door 23 to clean the dust collection box 21.
[0025] A heating layer 9 is provided on the granulation cylinder 3, and a heating tube 10 is provided inside the heating layer 9. A motor bracket 4 is provided on the side of the granulation cylinder 3, and a granulation motor 5 is installed on the motor bracket 4. An auger shaft 6 is rotatably arranged inside the granulation cylinder 3, and an auger blade 7 is provided on the auger shaft 6. The output end of the granulation motor 5 is fixedly connected to the top end of the auger shaft 6.
[0026] The dust collection box 21 is equipped with a sealing door 23, and the sealing door 23 is equipped with a sealing handle 29. The No. 1 fan 12, the No. 2 fan 26, the air purifier 13 and the No. 3 fan 20 are all electrically connected to an external power source.
[0027] During operation, in order to granulate the plastic raw materials, the raw materials that have been pre-treated by the treatment cylinder 16 enter the granulation cylinder 3. The heating tube 10 in the heating layer 9 on the granulation cylinder 3 starts to work, heating the raw materials in the granulation cylinder 3 to a suitable melting state. At the same time, the granulation motor 5 installed on the motor bracket 4 starts, and its output end drives the auger shaft 6 to rotate. The auger blades 7 on the auger shaft 6 rotate accordingly, stirring and conveying the molten raw materials to ensure that the raw materials are heated evenly and further improve the mixing quality of the raw materials. Under the continuous push of the auger blades 7, the molten raw materials are conveyed to the top of the granulation cylinder 3 and extruded through the granulation mold 8 to form granular products, thus completing the granulation process.
[0028] Working principle: In order to treat the dust and impurities on the plastic raw materials, the raw materials are put into the processing cylinder 16 through the feed pipe 18. The second fan 26 on the base 1 sends air into the processing cylinder 16 through the air pipe 27. The airflow flows above the solenoid valve 17, which helps to stir the raw materials and make them more uniform. On the other hand, it raises the dust generated during the raw material processing. The third fan 20 installed on the mounting plate 19 is started, which generates suction at the bottom of the dust collection box 21 through the dust suction pipe. The dust-laden air enters the dust collection box 21 from the dust collection hood 25 through the dust removal pipe 24. The filter plate 22 in the dust collection box 21 filters the dust-laden air. The dust is intercepted on one side of the filter plate 22. The purified air is drawn out and discharged by the third fan 20. When the dust in the dust collection box 21 accumulates to a certain level, the sealing door 23 can be opened through the sealing handle 29 on the sealing door 23 to clean the dust collection box 21.
[0029] To granulate the plastic raw materials, the raw materials, which have undergone preliminary treatment in the treatment cylinder 16, enter the granulation cylinder 3. The heating tube 10 in the heating layer 9 of the granulation cylinder 3 starts working to heat the raw materials in the granulation cylinder 3 to a suitable melting state. At the same time, the granulation motor 5, which is mounted on the motor bracket 4, starts, and its output end drives the auger shaft 6 to rotate. The auger blades 7 on the auger shaft 6 rotate accordingly to stir and transport the molten raw materials, ensuring that the raw materials are heated evenly and further improving the mixing quality of the raw materials. Under the continuous pushing of the auger blades 7, the molten raw materials are transported to the top of the granulation cylinder 3 and extruded through the granulation die 8 to form granular products, thus completing the granulation process.
[0030] In order to treat the waste gas generated during the granulation process, the waste gas and dust generated during the granulation process rise, the No. 1 fan 12 on the base 1 is started, and the dust-containing waste gas in the gas collection hood 11 is extracted through the air extraction pipe 14 and sent to the air purifier 13 through the exhaust pipe 15. The air purifier 13 purifies the waste gas, removes pollutants such as dust and harmful gases, and the purified air is discharged.
[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0032] 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 dust removal device of a granulator, characterized by: Includes a base (1), on which an installation block (2) is provided, on which a granulation cylinder (3) is provided, at the top of the granulation cylinder (3) is a granulation mold (8), at the top of the granulation cylinder (3) is a gas collection hood (11), on which a first fan (12) is provided, on which an exhaust pipe (14) is provided, at the other end of which is provided on the gas collection hood (11), on which an air purifier (13) is provided on the side of the first fan (12), on which an exhaust pipe (15) is provided, at the other end of which is provided on the air purifier (13); The granulation cylinder (3) is equipped with a processing cylinder (16), the processing cylinder (16) is equipped with a feed pipe (18), the processing cylinder (16) is equipped with a solenoid valve (17), the base (1) is equipped with a second blower (26), the second blower (26) is equipped with a duct (27), the other end of the duct (27) is connected to the processing cylinder (16) and is positioned above the solenoid valve (17), and the processing cylinder (16) is equipped with a dust collection hood (25). The processing cylinder (16) is provided with an installation plate (19), the installation plate (19) is provided with a No. 3 fan (20), the processing cylinder (16) is provided with a dust collection box (21), the dust collection box (21) is provided with a filter plate (22), the top of the dust collection box (21) is provided with a dust removal pipe (24), the other end of the dust removal pipe (24) is provided on the dust collection cover (25), and the No. 3 fan (20) is connected to the bottom of the dust collection box (21) through a suction pipe.
2. A dust removal device for a granulator according to claim 1, characterized in that: A heating layer (9) is provided on the granulation cylinder (3), and a heating tube (10) is provided inside the heating layer (9).
3. A dust extraction device for a granulator according to claim 2, characterised in that: A motor bracket (4) is provided on the side of the granulation cylinder (3), and a granulation motor (5) is installed on the motor bracket (4). An auger shaft (6) is rotatably arranged inside the granulation cylinder (3), and an auger blade (7) is provided on the auger shaft (6). The output end of the granulation motor (5) is fixedly connected to the top end of the auger shaft (6).
4. A dust removal device for a granulator according to claim 1, characterized in that: The dust collection box (21) is provided with a sealing door (23), and the sealing door (23) is provided with a sealing handle (29).
5. A dust extraction device for a granulator according to claim 4, characterised in that: The air purifier (13) is model SSDLZUV-20K, and the solenoid valve (17) is model J29W-160P.
6. The dust removal device for a granulator according to claim 1, characterized in that: The No. 1 fan (12), No. 2 fan (26), air purifier (13) and No. 3 fan (20) are all electrically connected to an external power source.