Modified plastic dust recovery device

Abstract

The utility model relates to industrial environmental protection equipment field especially, more particularly to a modified plastics dust recovery device, including cutting machine, air inlet pipe and water delivery pipe etc., cutting machine top is connected with dust cover, and cutting machine rear end places water tank, and cutting machine rear end is installed with dust catcher, and air inlet pipe intercommunication dust cover and dust catcher, and dust catcher bottom is connected with air outlet pipe, and air outlet pipe bottom is connected with water tank top, and the installation has in the air outlet pipe and sprays the pipe, and water delivery pipe one end communicates with the spray pipe, and the other end is connected in the water tank inner bottom and is equipped with water pump, and the water tank is equipped with filter screen frame, and is provided with the cleaning mechanism for self -cleaning on the filter screen frame. Through cutting machine top connection's dust cover, dust catcher is driven to suck dust-containing airflow through air inlet pipe, uses the atomization water curtain of spray pipe to make the dust that enters the air outlet pipe coagulation, high -efficient infiltration settlement, realizes the prevention dust to disperse, solves the harm of open -type operation to the respiratory health of worker completely.

Description

Technical Field

[0001] This utility model relates to the field of industrial environmental protection equipment, and in particular to a modified plastic dust recycling device. Background Technology

[0002] Plastics, due to their lightweight, corrosion resistance, and ease of processing, are widely used in industrial production and daily life. With increasing environmental awareness, the recycling and reuse of waste plastics has become a crucial link in resource recycling. Collecting waste plastic products can effectively reduce environmental pollution and lower the production costs of new materials, thus achieving sustainable development.

[0003] Current plastic recycling processes typically employ mechanical crushing equipment for pre-treatment of collected waste plastics. The specific process involves feeding the plastic products into the crusher chamber, where high-speed rotating blades or hammers cut and impact them, breaking them into smaller granular materials. These processed plastic granules have a uniform physical morphology, facilitating subsequent deep processing such as melt recycling, modification, and granulation.

[0004] However, traditional crushing equipment has significant drawbacks in operation. Because recycled plastic products are often covered with dirt, impurities, or are aged and brittle, a large amount of micron-sized dust is generated during high-speed crushing. This dust, due to internal airflow disturbances and mechanical vibrations, escapes into the external environment from the feed inlet and gaps. This not only causes workplace air pollution and harms the health of operators, but also leads to material loss. Furthermore, the dust diffusion interferes with the operation of surrounding precision equipment, necessitating targeted solutions. Utility Model Content

[0005] To overcome the drawback of dust escaping from the feed inlet, this utility model provides a modified plastic dust recycling device, which aims to solve the above-mentioned shortcomings.

[0006] A modified plastic dust recovery device includes a cutting machine, an air inlet pipe, and a water supply pipe. A dust collection hood is connected to the top of the cutting machine, and a water tank is placed at the rear end of the cutting machine. A vacuum cleaner is installed at the rear end of the cutting machine. One end of the air inlet pipe is connected to the top of the dust collection hood, and the other end is connected to the air inlet of the vacuum cleaner. An air outlet pipe is connected to the bottom of the vacuum cleaner, and the bottom of the air outlet pipe is connected to the top of the water tank. Air outlets are opened on both the front and rear sides between the air outlet pipe and the water tank. A spray pipe is installed inside the air outlet pipe. One end of the water supply pipe is connected to the spray pipe, and the other end is connected to the bottom of the water tank and a water pump is installed thereon. A filter frame for blocking dust is installed inside the water tank, and the right end of the filter frame passes through the water tank. A self-cleaning cleaning mechanism is provided on the filter frame.

[0007] As an improvement to the above solution, the cleaning mechanism includes an electric slide rail, which is installed at both ends of the filter frame. A first connecting block is slidably connected inside the electric slide rail. A scraper is connected to the top of two first connecting blocks, and a brush is connected to the bottom of the two first connecting blocks. Both the brush and the scraper are in contact with the filter screen of the filter frame. A tray is connected to the right side of the water tank, and a collection box is placed on the tray. The filter frame passes through the right end of the water tank. The water tank has a through hole, and sealing components that prevent foreign objects from entering are provided on both the upper and lower sides of the through hole.

[0008] As an improvement to the above solution, the sealing component includes a second connecting block. Several mounting seats are connected to the right side of the water tank. The second connecting block is rotatably connected to the lower end of the mounting seat. Two second connecting blocks are connected to a baffle. The baffle is located at the upper and lower ends of the filter frame, respectively. The baffle closes the through hole at the right end of the water tank. The brush and the scraper are both pressed against the baffle. A torsion spring is sleeved on the rotating shaft connecting the second connecting block and the mounting seat. One end of the torsion spring is connected to the second connecting block, and the other end is connected to the mounting seat.

[0009] As an improvement to the above solution, a sealing gasket is connected to the end of the baffle that contacts the filter frame.

[0010] As an improvement to the above solution, a guide plate is connected to the bottom of the water tank, and the lowest point of the guide plate is located below the water pump.

[0011] As an improvement to the above solution, the bottom of the air outlet duct is connected to a quarter-circle cover plate at both the front and rear ends, and the cover plate arc-shaped to cover the upper part of the air outlet.

[0012] As an improvement to the above solution, a barrier net is connected to the top of the dust collection hood.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The dust collection hood and built-in barrier net connected to the top of the cutting machine directly intercept the high-speed splashing plastic particles and let them fall back into the processing area. At the same time, the vacuum cleaner actively draws in the dust-laden airflow through the air inlet pipe and uses the atomized water curtain of the spray pipe to condense the dust entering the air outlet pipe, which is efficiently wetted and settled, thus preventing dust from escaping and completely solving the harm to workers' respiratory health caused by open operation.

[0015] 2. The electric slide rail synchronously drives the brush and scraper to move in both directions. When the brush moves upward to clear the filter screen pores, the scraper moves downward to peel off the clumps of dust. Then, the slag discharge channel is automatically opened and closed by squeezing the torsion spring baffle. With the help of the guide plate, the residual water in the water tank is directed to ensure that the water pump can continuously draw clean water under low water level conditions. This achieves the goal of stable operation without manual sludge removal during long-term continuous operation, and significantly improves the production efficiency of mass cutting of modified plastics. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a cross-sectional view of the installation structure of the air inlet pipe and the vacuum cleaner of this utility model.

[0018] Figure 3 This is a cross-sectional view of the installation structure of the spray pipe and water supply pipe of this utility model.

[0019] Figure 4 This is a schematic diagram showing the connection between the filter screen holder and the electric slide rail of this utility model.

[0020] Figure 5 This is a schematic diagram of the installation structure of the scraper and brush of this utility model.

[0021] Figure 6 for Figure 3 Enlarged view of point A in the middle.

[0022] The following are the labels in the diagram: 1. Cutting machine, 2. Dust hood, 3. Air inlet pipe, 4. Vacuum cleaner, 5. Air outlet pipe, 6. Water tank, 7. Air outlet, 8. Spray pipe, 9. Water supply pipe, 10. Water pump, 11. Filter frame, 12. Electric slide rail, 13. Brush, 14. First connecting block, 15. Scraper, 16. Baffle, 17. Mounting base, 18. Second connecting block, 19. Torsion spring, 20. Support plate, 21. Collection box, 22. Sealing gasket, 23. Guide plate, 24. Cover plate, 25. Barrier net. Detailed Implementation

[0023] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0024] Example: A modified plastic dust recycling device, such as Figures 1-6As shown, the system includes a cutting machine 1, a dust hood 2, an air inlet pipe 3, a vacuum cleaner 4, an air outlet pipe 5, a water tank 6, a spray pipe 8, a water supply pipe 9, a water pump 10, a filter frame 11, and a cleaning mechanism. The top of the cutting machine 1 is connected to the dust hood 2, and the water tank 6 is placed at the rear end where the vacuum cleaner 4 is installed. The two ends of the air inlet pipe 3 are connected to the top of the dust hood 2 and the air inlet of the vacuum cleaner 4, respectively. The bottom of the vacuum cleaner 4 is connected to the air outlet pipe 5, and the bottom of the air outlet pipe 5 is connected to the top of the water tank 6. Air outlets 7 are opened on both the front and rear sides between the two. The spray pipe 8 is installed inside the air outlet pipe 5. The spray pipe 8 is equipped with multiple atomizing nozzles facing the center. One end of the water supply pipe 9 is connected to the spray pipe 8, and the other end is connected to the bottom of the water tank 6 where the water pump 10 is installed. The water tank 6 is equipped with a filter frame 11 for blocking dust, and the right end of the filter frame 11 passes through the water tank 6. The filter frame 11 is equipped with a self-cleaning mechanism.

[0025] like Figures 3-5 As shown, the cleaning mechanism includes an electric slide rail 12, a brush 13, a first connecting block 14, a scraper 15, a sealing assembly, a tray 20, and a collection box 21. The electric slide rail 12 is installed at both ends of the filter frame 11. The first connecting block 14 is slidably connected inside the electric slide rail 12. The first connecting block 14 is provided with an anti-detachment "T" shaped plate. The top of the two first connecting blocks 14 are connected to the scraper 15. The bottom of the two first connecting blocks 14 are connected to the brush 13. The brush 13 and the scraper 15 are in contact with the filter screen of the filter frame 11. The tray 20 is connected to the right side of the water tank 6. The collection box 21 is placed on the tray 20. The filter frame 11 passes through the right end of the water tank 6. The water tank 6 has a through hole. Sealing assemblies that prevent foreign objects from entering are provided on both the upper and lower sides of the through hole.

[0026] like Figure 3 and Figure 6 As shown, the sealing assembly includes a baffle 16, a mounting base 17, a second connecting block 18, and a torsion spring 19. Four mounting bases 17 are connected to the right side of the water tank 6. The second connecting blocks 18 are rotatably connected to the lower end of the mounting base 17. Every two second connecting blocks 18 are connected to a baffle 16. The baffles 16 are located at the upper and lower ends of the filter screen frame 11, respectively. The baffles 16 close the through hole at the right end of the water tank 6. The brush 13 and the scraper 15 are both pressed and engaged with the baffles 16. A torsion spring 19 is sleeved on the rotating shaft connecting the second connecting block 18 and the mounting base 17. The two ends of the torsion spring 19 are connected to the second connecting block 18 and the mounting base 17, respectively.

[0027] like Figure 6 As shown, it also includes a sealing gasket 22, and the end of the baffle 16 that contacts the filter frame 11 is connected to the sealing gasket 22.

[0028] like Figure 3 As shown, it also includes a guide plate 23. The bottom of the water tank 6 is connected to the guide plate 23, and the lowest point of the guide plate 23 is located below the water inlet of the water pump 10.

[0029] like Figure 3 As shown, it also includes a cover plate 24. The bottom of the air outlet 5 is connected to a quarter-circle cover plate 24 at both the front and rear ends. The cover plate 24 arc-shapedly covers the upper part of the air outlet 7.

[0030] like Figure 2 As shown, it also includes a barrier net 25, which is connected to the top of the dust collection hood 2.

[0031] The operator starts the equipment and puts the plastic part into the feed inlet of the cutting machine 1. The blades inside the cutting machine 1 rotate at high speed to crush the plastic part, generating a large amount of dust. At the same time, the vacuum cleaner 4 and the water pump 10 are turned on simultaneously. During the crushing process, air containing a large amount of dust is sucked from the feed inlet of the cutting machine 1 into the dust collection hood 2 on top. In the dust collection hood 2, larger plastic particles that break off and fly away are intercepted by the top-mounted barrier net 25, and fall back to the cutting area after losing kinetic energy. The fine dust is then powerfully sucked up by the vacuum cleaner 4 with the airflow and enters the air outlet duct 5 through the air inlet pipe 3. Under the action of the water pump 10, clean water in the water tank 6 is continuously sucked in and pressurized and transported through the water supply pipe 9 to the spray pipe 8 installed inside the air outlet duct 5. Multiple atomizing nozzles distributed on the spray pipe 8 fully atomize the water flow to form a fine water curtain. When the high-speed airflow carrying dust passes through this water mist area, the dust particles are adsorbed and condensed with the water mist to form moist dust clumps. These weighted clumps, under the influence of gravity and inertia, settle and accumulate directly on the surface of the filter frame 11, while the purified airflow is discharged from the air outlet 7. The arc-shaped cover 24 installed on the upper part of the air outlet 7 extends downward to cover the upper part of the air outlet 7, effectively preventing condensed dust clumps or sprayed water droplets from accidentally escaping from the air outlet 7, and also preventing them from falling onto components such as the electric slide rail 12 located below.

[0032] As the cutting and shredding operation continues, the moist dust trapped on the filter frame 11 gradually accumulates. When cleaning is required, the operator activates the electric slide rail 12 on the filter frame 11. The electric slide rail 12 drives the first connecting block 14, which in turn moves the brush 13 and scraper 15, which are fixedly connected to it, to the right simultaneously. During the movement, the bottom brush 13 closely adheres to the bottom surface of the filter and continuously brushes, effectively clearing any potentially clogged filter holes. At the same time, the top scraper 15 forcefully scrapes the surface of the filter, pushing the accumulated moist dust to the right. When the scraper 15 and brush 13 move to the right along with the first connecting block 14 to the section where the filter frame 11 extends out of the water tank 6, they begin to contact and press the baffles 16 installed on the upper and lower sides of the through hole. After the baffles 16 are pressed, they drive the second connecting block 18 connected to it to overcome the elastic force of the torsion spring 19 and rotate outward around the pivot on the mounting base 17, thereby temporarily opening the through hole. The electric slide rail 12 continues to drive the first connecting block 14 to move to the right, and the scraper 15 finally pushes the dust block scraped up completely away from the filter frame 11, so that it falls into the collection box 21 placed on the outer tray 20 through the opened through hole. When the first connecting block 14 moves to its rightmost extreme position, the electric slide rail 12 immediately drives it to slide to the left to reset. During the reset process, the brush 13 and scraper 15 gradually release their pressure on the baffle 16. At this time, the torsion spring 19, which had previously accumulated elasticity through torsion, begins to release energy, causing the second connecting block 18 and the baffle 16 to quickly rotate back to their original positions, tightly sealing the through hole on the side wall of the water tank 6 again. The sealing gasket 22 on the inner side of the baffle 16 ensures the seal at the contact point with the filter frame 11, effectively preventing water and dust leakage. The entire cleaning mechanism completes one working cycle, resets to its initial state, and prepares for the next cleaning cycle.

[0033] During equipment operation, the water level in tank 6 gradually decreases due to evaporation and spraying. Operators replenish tank 6 with clean water as needed. An inclined guide plate 23 installed at the bottom of tank 6 guides residual water to the vicinity of the water pump 10's suction port, ensuring effective pumping even at low water levels and reducing water waste. When the plastic parts crushing process is complete, operators first shut down the cutting machine 1 to stop dust generation. To remove residual dust from pipes and equipment, the vacuum cleaner 4 and water pump 10 are kept running for a period, using continuous suction and spraying to remove residue. Then, operators shut down the vacuum cleaner 4 to stop ventilation and finally turn off the water pump 10 to stop spraying. This sequence ensures effective removal of residual dust from the system. After the system has completely stopped and the filter has been cleaned, operators can remove the collection box 21 from the tray 20 and dispose of the collected condensed dust particles. This completes one full work cycle for the modified plastic dust recovery device.

[0034] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Therefore, all equivalent changes made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A modified plastic dust recycling device, characterized in that, The system includes a cutting machine (1), an air inlet pipe (3), and a water supply pipe (9). A dust cover (2) is connected to the top of the cutting machine (1). A water tank (6) is placed at the rear end of the cutting machine (1). A vacuum cleaner (4) is installed at the rear end of the cutting machine (1). One end of the air inlet pipe (3) is connected to the top of the dust cover (2), and the other end is connected to the air inlet of the vacuum cleaner (4). An air outlet pipe (5) is connected to the bottom of the vacuum cleaner (4), and the bottom of the air outlet pipe (5) is connected to the top of the water tank (6). Air outlets (7) are opened on both the front and rear sides between the air outlet pipe (5) and the water tank (6). A spray pipe (8) is installed inside the air outlet pipe (5). One end of the water supply pipe (9) is connected to the spray pipe (8), and the other end is connected to the bottom of the water tank (6) and a water pump (10) is installed. A filter frame (11) for blocking dust is installed inside the water tank (6), and the right end of the filter frame (11) passes through the water tank (6). A cleaning mechanism for self-cleaning is provided on the filter frame (11).

2. The modified plastic dust recycling device as described in claim 1, characterized in that, The cleaning mechanism includes an electric slide rail (12), which is installed at both ends of the filter frame (11). A first connecting block (14) is slidably connected inside the electric slide rail (12). A scraper (15) is connected to the top of the two first connecting blocks (14), and a brush (13) is connected to the bottom of the two first connecting blocks (14). The brush (13) and the scraper (15) are in contact with the filter screen of the filter frame (11). A tray (20) is connected to the right side of the water tank (6), and a collection box (21) is placed on the tray (20). The filter frame (11) passes through the right end of the water tank (6). The water tank (6) has a through hole, and a sealing component to prevent foreign objects from entering is provided on both the upper and lower sides of the through hole.

3. The modified plastic dust recycling device as described in claim 2, characterized in that, The sealing assembly includes a second connecting block (18). Several mounting seats (17) are connected to the right side of the water tank (6). The second connecting block (18) is rotatably connected to the lower end of the mounting seat (17). Two second connecting blocks (18) are connected to a baffle (16). The baffle (16) is located at the upper and lower ends of the filter screen frame (11). The baffle (16) closes the through hole at the right end of the water tank (6). The brush (13) and the scraper (15) are pressed together with the baffle (16). A torsion spring (19) is sleeved on the rotating shaft connecting the second connecting block (18) and the mounting seat (17). One end of the torsion spring (19) is connected to the second connecting block (18), and the other end is connected to the mounting seat (17).

4. The modified plastic dust recycling device as described in claim 3, characterized in that, A sealing gasket (22) is connected to the end of the baffle (16) that contacts the filter frame (11).

5. The modified plastic dust recycling device as described in claim 1, characterized in that, The bottom of the water tank (6) is connected to a guide plate (23), and the lowest point of the guide plate (23) is located below the water pump (10).

6. The modified plastic dust recycling device as described in claim 1, characterized in that, The bottom of the air outlet pipe (5) is connected to a quarter-circle cover plate (24) at both the front and rear ends, and the cover plate (24) covers the upper part of the air outlet (7) in an arc shape.

7. The modified plastic dust recycling device as described in claim 1, characterized in that, The dust collection hood (2) has a barrier net (25) connected to the top inside.

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