A plastic particle cleaning and deodorizing device and a granulation system

Abstract

This invention belongs to the field of plastic granule cleaning technology, and discloses a plastic granule cleaning and deodorizing device and granulation system. The cleaning tank cavity is equipped with multiple vertical baffles arranged sequentially, forming an S-shaped cleaning channel within the cavity. A cleaning area is formed between adjacent vertical baffles. Each vertical baffle includes a blocking part to intercept water flow and a guiding part to direct water flow, causing the water flow to form a vortex within the cleaning area. Through the optimized design of the cleaning and deodorizing device, multiple vertical baffles are arranged along the water flow direction within the cavity to form an S-shaped cleaning channel. During the cleaning process, the plastic granules flow with the water flow within the cleaning channel, achieving dynamic water cleaning. Simultaneously, the vortex formed between adjacent vertical baffles improves the cleaning efficiency of the plastic granules and eliminates dead corners within the cleaning area, enabling continuous cleaning and feeding.

Description

Technical Field

[0001] This invention relates to the field of plastic granule cleaning technology, and in particular to a plastic granule cleaning and deodorizing device and granulation system. Background Technology

[0002] Modified plastics are plastic materials whose original properties are improved through physical, chemical, and mechanical methods, and they have a wide range of applications. Because the production process of modified plastics generates many pungent and toxic gases, it is necessary to remove these odors to achieve environmental protection goals. This is especially true for PE plastic granules, which are commonly used in white goods, where the requirements for odor removal and environmental protection of the raw material granules are even higher.

[0003] Existing deodorization equipment typically employs a sealed tank soaking process. This involves immersing raw material particles in a sealed tank filled with water or cleaning solution, using a stirring mechanism to continuously agitate the cleaning solution and remove odors. However, the main problems with sealed tank soaking are uneven soaking, incomplete deodorization, and the inability to promptly remove defective products during production, easily leading to batch quality issues. Furthermore, the use of multiple tanks requires motor-driven interlocking, resulting in high energy consumption. Traditional deodorization processes, including drying and sealed tank soaking, suffer from high energy consumption, poor deodorization effectiveness, and the inability to promptly handle defective products generated during continuous production, severely impacting the first-time molding pass rate. In particular, PE and other plastic particles, with their low density, tend to float on the surface of the cleaning solution in the sealed tank, failing to make sufficient contact and resulting in poor deodorization. Summary of the Invention

[0004] To address the technical problems existing in the background art, the present invention proposes a plastic granule cleaning and deodorizing device and a granulation system.

[0005] The present invention provides a plastic particle cleaning and deodorizing device, comprising: a cleaning tank; The cleaning tank has a cavity with an open top. The cavity includes a feeding area, a cleaning area, and a discharging area connected in sequence. The cleaning area has multiple vertical baffles arranged in sequence. The multiple vertical baffles form an S-shaped cleaning channel extending from the feeding port to the discharging port in the cleaning area. A cleaning area is formed between two adjacent vertical baffles. The vertical baffles include a blocking part that intercepts the water flow and a guiding part that guides the water flow, so that the water flow forms a vortex in the cleaning area.

[0006] Preferably, the side wall of the feeding area is provided with a feeding port, which is located on one side of the cleaning channel and is positioned towards the guide portion of the vertical partition.

[0007] Preferably, the bottom of the trough is arranged at an angle from high to low from the feeding area to the discharging area.

[0008] Preferably, the feeding area is provided with a feeding port, the discharging area is provided with a discharging port, and the discharging port is set higher than the feeding port.

[0009] Preferably, the discharge port is provided with a discharge channel extending outward from the cleaning channel; The height of the discharge channel gradually decreases in the direction away from the discharge port; And / or, the width of the discharge channel gradually decreases in the direction away from the discharge port.

[0010] Preferably, the bottom of the cleaning tank is provided with an adjustment bracket for adjusting the tilt angle of the cleaning tank.

[0011] Preferably, it also includes a spraying mechanism located above the cleaning tank. The bottom of the spraying mechanism is provided with multiple spray nozzles, each spray nozzle is arranged corresponding to a cleaning area, and each spray nozzle to the corresponding cleaning area is used to form a longitudinal vortex within the cleaning area.

[0012] Preferably, the vertical partition has an L-shaped structure; the spray nozzle is located on the side of the guide section near the blocking section.

[0013] In this invention, the proposed plastic particle cleaning and deodorizing device features a cleaning tank with multiple vertical baffles arranged sequentially inside. These baffles form an S-shaped cleaning channel within the tank, with a cleaning area formed between adjacent baffles. Each baffle includes a blocking portion to intercept water flow and a guiding portion to direct the water flow, creating a vortex within the cleaning area. This optimized cleaning and deodorizing device, with multiple vertical baffles arranged along the water flow direction within the tank to form an S-shaped cleaning channel, extends the soaking time. During the cleaning process, the plastic particles flow with the water within the cleaning channel, achieving dynamic cleaning. Simultaneously, the vortex formed between adjacent baffles improves the cleaning efficiency of the plastic particles and eliminates dead zones within the cleaning area, enabling continuous cleaning and feeding.

[0014] The present invention also proposes a plastic pelletizing system, including the above-mentioned plastic pellet cleaning and deodorizing device.

[0015] Preferably, it also includes a screw extruder, a cooling water tank, and a water ring pelletizer; Screw extruders are used to form plastic raw materials into plastic strips; The cooling water tank is used to cool the plastic strips extruded by the screw extruder; The water ring pelletizer is used to cut cooled plastic strips into plastic pellets. The outlet of the water ring pelletizer is connected to the inlet of the washing tank.

[0016] The plastic granulation system proposed in this invention has similar technical effects to the aforementioned cleaning and deodorizing device. Furthermore, by cooperating the cleaning and deodorizing device with the upstream granulator and cooling water tank, a continuous granulation, cooling, and cleaning process for plastic granules can be achieved, greatly improving production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one embodiment of a plastic particle cleaning and deodorizing device proposed in this invention.

[0018] Figure 2 This is a schematic diagram of another embodiment of the plastic particle cleaning and deodorizing device proposed in this invention.

[0019] Figure 3 This is a schematic diagram of water flow in the cleaning tank in one embodiment of the plastic particle cleaning and deodorizing device proposed in this invention.

[0020] Figure 4 This is a partial structural diagram of one embodiment of the plastic particle cleaning and deodorizing device proposed in this invention.

[0021] Figure 5 This is a schematic diagram of one embodiment of a plastic pelletizing system proposed in this invention.

[0022] Figure label: 1. Vertical partition; 2. Feed inlet; 3. Discharge outlet; 4. Adjusting bracket; 5. Spraying mechanism; 6. Spray nozzle; 7. Discharge channel; 10. Cleaning tank; 20. Screw extruder; 30. Cooling water tank; 40. Water ring pelletizer. Detailed Implementation

[0023] Reference Figure 1 The present invention proposes a plastic particle cleaning and deodorizing device, comprising: a cleaning tank 10; The cleaning tank 10 has a top-opening cavity inside. The cavity includes a feeding area, a cleaning area, and a discharging area connected in sequence. The cleaning area has multiple vertical partitions 1 arranged in sequence. The multiple vertical partitions 1 form an S-shaped cleaning channel extending from the feeding port 2 to the discharging port 3 in the cleaning area. A cleaning area is formed between two adjacent vertical partitions 1. The vertical partitions 1 include a blocking part that intercepts water flow and a guiding part that guides water flow, so that the water flow forms a vortex in the cleaning area.

[0024] In the specific design of the baffle structure, straight, L-shaped, and arc-shaped designs can be adopted.

[0025] To explain in detail the specific operation of the plastic particle cleaning and deodorizing device in this embodiment, please refer to... Figure 5This embodiment also proposes a plastic pelletizing system, including the aforementioned plastic pellet washing and deodorizing device. Specifically, it also includes a screw extruder 20, a cooling water tank 30, and a water ring pelletizing device 40; the screw extruder 20 is used to form plastic strips from the plastic raw material base; the cooling water tank 30 is used to cool the plastic strips extruded by the screw extruder; the water ring pelletizing device 40 is used to cut the cooled plastic strips into pellets, and the outlet of the water ring pelletizing device 40 is connected to the feed inlet 2 of the washing tank 10.

[0026] In the specific operation of the plastic pelletizing system of this embodiment, refer to... Figure 3 First, the plastic raw material is extruded into a molten plastic strip by a screw extruder. Then, the plastic strip is cooled by a cooling water tank. Next, the cooled plastic strip is sent to a water ring pelletizer for pelletizing. Since the water ring pelletizer sprays cooling water onto the cutter during the pelletizing process, the plastic pellets are discharged along with the cooling water when the water ring pelletizer discharges.

[0027] During the cleaning process, water containing plastic particles is fed into the cleaning tank. The water flows into each cleaning zone, where vertical baffles intercept the flow and then return along the guide section, forming a vortex before flowing out. This vortex ensures the plastic particles mix with the water within the cleaning zone, preventing them from floating on the surface and allowing for thorough cleaning. It also eliminates any blind spots in the cleaning process. Finally, the cleaned plastic particles are buffered in the discharge zone and float again on the cooling water surface. The water flow above the discharge zone carries the cleaned plastic particles out of the discharge port.

[0028] In this embodiment, the proposed plastic particle cleaning and deodorizing device has multiple vertical baffles arranged sequentially inside the cleaning tank cavity. These baffles form an S-shaped cleaning channel within the tank cavity, with a cleaning area formed between adjacent baffles. Each baffle includes a blocking part to intercept water flow and a guiding part to direct the water flow, causing the water flow to form a vortex within the cleaning area. Through this optimized design, the cleaning and deodorizing device, with multiple vertical baffles arranged along the water flow direction within the tank cavity to form an S-shaped cleaning channel, extends the soaking time. During the cleaning process, the plastic particles flow with the water flow within the cleaning channel, achieving dynamic cleaning. Simultaneously, the vortex formed between adjacent baffles improves the cleaning efficiency of the plastic particles and eliminates dead corners within the cleaning area, enabling continuous cleaning and feeding.

[0029] In the actual design of the granulation system, the cleaning and deodorizing device works in conjunction with the upstream extruder, cooling water tank, and water ring pelletizing device to achieve a continuous granulation, cooling, and cleaning process for plastic granules, greatly improving production efficiency. For example, a twin-screw extruder can be used as the extruder. The cleaning and deodorizing device in this embodiment can also be used in conjunction with a water ring hot-cutting granulation unit as disclosed in Chinese Patent CN120396162A.

[0030] To prevent the plastic granules from forming dead zones in the feeding area after entering the cleaning tank with the water flow, a feeding inlet 2 is provided on the side wall of the feeding area. The feeding inlet 2 is located on one side of the cleaning channel and faces the guide portion of the vertical partition 1. After the water flows in through the feeding inlet, it quickly forms a vortex under the action of the vertical partition.

[0031] In practical design, the bottom of the tank cavity is arranged at an angle from high to low from the feeding area to the discharging area. This allows the plastic particles to flow faster under gravity within the cleaning tank, accelerating the formation of eddies, improving the mixing effect between the plastic particles and the water flow, and saving energy. In a specific embodiment, the bottom of the cleaning tank 10 is provided with an adjusting bracket 4 for adjusting the tilt angle of the cleaning tank 10. To facilitate adjustment of the water flow speed within the cleaning tank, the tilt angle of the cleaning tank can be adjusted using the adjusting bracket.

[0032] Furthermore, the feeding area is provided with a feed inlet 2, and the discharging area is provided with a discharge outlet 3, with the discharge outlet 3 being positioned higher than the feed inlet 2. The lower feed inlet allows plastic particles to enter the feeding area with the water flow, facilitating full contact between the plastic particles and the water. The higher discharge outlet buffers the water flow carrying plastic particles in the discharge area, causing the plastic particles to float on the surface of the water flow, making it easier for the upper water flow to carry the cleaned plastic particles out of the discharge outlet.

[0033] In the specific design of the discharge port, the discharge port 3 is provided with a discharge channel 7 extending outward from the cleaning channel. The height of the discharge channel 7 gradually decreases in the direction away from the discharge port 3, and the width of the discharge channel 7 gradually decreases in the direction away from the discharge port 3, so as to facilitate the separation of plastic particles from water flow after discharge.

[0034] In other specific embodiments, refer to Figure 2 and 4This embodiment also includes a spraying mechanism 5, located above the cleaning tank 10. The spraying mechanism 5 has multiple spray nozzles 6 at its bottom, each nozzle corresponding to a cleaning area. Each nozzle 6 forms a longitudinal vortex within the cleaning area, improving the cleaning effect. Furthermore, the vertical partition 1 has an L-shaped structure; the spray nozzles are located on the side of the guide section near the blocking section. Within each cleaning area, the spraying mechanism sprays downwards, forming a tumbling longitudinal vortex, ensuring more thorough contact between the plastic particles and the water flow, and preventing cleaning dead zones caused by plastic particles floating on the water surface.

[0035] In addition, a water outlet can be designed at the bottom of the discharge area to regularly change the water in the cleaning tank and ensure the cleaning effect.

[0036] The following detailed description of the plastic particle cleaning and deodorizing device of this embodiment uses specific examples.

[0037] The deodorization device includes a cleaning tank 10 and a spraying mechanism 5; The cleaning tank 10 has an internal cavity with a top opening. The cavity includes a feeding zone, a cleaning zone, and a discharging zone connected sequentially. The bottom of the cavity slopes downwards from the feeding zone to the discharging zone. The cleaning zone contains multiple L-shaped vertical baffles 1 arranged sequentially, forming an S-shaped cleaning channel extending from the feeding port 2 to the discharging port 3. A cleaning area is formed between adjacent L-shaped vertical baffles 1. Each L-shaped vertical baffle 1 includes a blocking part to intercept water flow and a guiding part to guide water flow, causing the water flow to form a vortex within the cleaning area. The feeding zone has a feeding port 2 on its side wall, located on one side of the cleaning channel and facing the guiding part of the L-shaped vertical baffle 1. The discharging zone has a discharging port 3, which is positioned higher than the feeding port 2. The discharge port 3 is provided with a discharge channel 7 extending outward from the cleaning channel. The height of the discharge channel 7 gradually decreases in the direction away from the discharge port 3, and the width of the discharge channel 7 gradually decreases in the direction away from the discharge port 3.

[0038] The spray mechanism 5 is located above the cleaning tank 10. Multiple spray nozzles 6 are provided at the bottom of the spray mechanism 5, each nozzle 6 corresponding to a cleaning area. Each spray nozzle 6 is used to create a longitudinal vortex within the cleaning area. The spray nozzles 6 are located on the side of the guide section near the blocking section.

[0039] During operation, the residence time of plastic granules in the cleaning tank can be controlled by the water flow rate. For example, the water inlet volume can be adjusted by the inlet valve on the upstream water-cutting die head, and the water flow can be kept stable by adjusting the height difference between the inlet and outlet ends. For example, a 7.5-meter-long water tank with a height difference of about 20 centimeters can ensure stable material flow.

[0040] Adjusting the spacing and shape of the baffles can also affect water flow speed and material accumulation. A larger spacing results in a slower flow rate and larger cleaning dead zones; conversely, a smaller spacing results in smaller dead zones. By adjusting the baffle spacing and shape, a stable water flow is generated in each cleaning area, eliminating material accumulation and ensuring even soaking of particles. For example, a 50cm wide water tank with a 30cm spacing can eliminate dead zones.

[0041] Furthermore, the soaking time can be adjusted by the length of the tank; the longer the tank, the longer the soaking time. For example, a 7.5-meter-long tank can achieve a soaking time of 0.5 hours. To increase the soaking time, a movable baffle can be added at the vertical baffle position to block the material, and then the baffle can be removed to release the material.

[0042] In actual use, the deodorizing device in this embodiment effectively extends the soaking time. The traditional process takes about 15 minutes, while this device can last for more than 1 hour. The deodorizing effect is obvious, and it is energy-saving and environmentally friendly, with a high one-time molding qualification rate.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for cleaning and deodorizing plastic granules, characterized in that, include: Cleaning tank (10); The cleaning tank (10) has a top-opening cavity inside. The cavity includes a feeding area, a cleaning area and a discharging area connected in sequence. The cleaning area has multiple vertical partitions (1) arranged in sequence. The multiple vertical partitions (1) form an S-shaped cleaning channel extending from the feeding port (2) to the discharging port (3) in the cleaning area. A cleaning area is formed between two adjacent vertical partitions (1). The vertical partitions (1) include a blocking part that intercepts water flow and a guiding part that guides water flow, so that the water flow forms a vortex in the cleaning area, so that the plastic particles are mixed with the water flow in the cleaning area. It also includes a spray mechanism (5), which is located above the cleaning tank (10). The bottom of the spray mechanism (5) is provided with multiple spray nozzles (6), each spray nozzle (6) is arranged corresponding to a cleaning area, and each spray nozzle (6) is used to form a longitudinal vortex that rolls up and down in the cleaning area.

2. The plastic particle cleaning and deodorizing device according to claim 1, characterized in that, The side wall of the feeding area is provided with a feeding port (2), which is located on one side of the cleaning channel and is set towards the guide part of the vertical partition (1).

3. The plastic particle cleaning and deodorizing device according to claim 1, characterized in that, The bottom of the trough is arranged at an angle from high to low from the feeding area to the discharging area.

4. The plastic particle cleaning and deodorizing device according to claim 3, characterized in that, The feeding area is provided with a feeding port (2), and the discharging area is provided with a discharging port (3). The discharging port (3) is set higher than the feeding port (2).

5. The plastic particle cleaning and deodorizing device according to claim 4, characterized in that, The discharge port (3) is provided with a discharge channel (7) extending outward from the cleaning channel; The height of the discharge channel (7) gradually decreases in the direction away from the discharge port (3); And / or, the width of the discharge channel (7) gradually decreases in the direction away from the discharge port (3).

6. The plastic particle cleaning and deodorizing device according to claim 3, characterized in that, The bottom of the cleaning tank (10) is provided with an adjustment bracket (4) for adjusting the tilt angle of the cleaning tank (10).

7. The plastic particle cleaning and deodorizing device according to claim 1, characterized in that, The vertical partition (1) has an L-shaped structure; the spray nozzle (6) is located on the side of the guide section near the blocking section.

8. A plastic pelletizing system, characterized in that, Includes the plastic particle cleaning and deodorizing device according to any one of claims 1-7.

9. The plastic pelletizing system according to claim 8, characterized in that, It also includes a screw extruder (20), a cooling water tank (30), and a water ring pelletizer (40); The screw extruder (20) is used to form plastic strips from a base of plastic raw materials; The cooling water tank (30) is used to cool the plastic strips extruded by the screw extruder (20); The water ring pelletizer (40) is used to cut cooled plastic strips into plastic pellets. The outlet of the water ring pelletizer (40) is connected to the feed inlet (2) of the cleaning tank (10).

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