Metal surface electrostatic powder plastic spraying dust collection structure

Abstract

The utility model provides a metal surface electrostatic powder plastic spraying dust collection structure which comprises a spraying room, one side of the spraying room is fixedly connected with a dust collection frame, the top of the dust collection frame is fixedly communicated with a dust suction pipe, one end of the dust suction pipe is fixedly communicated with a cyclone separator, the bottom of the cyclone separator is provided with a first collection assembly, and the first collection assembly is provided with a second collection assembly. The top of the cyclone separator fixedly communicates with a connecting pipe, and one end of the connecting pipe fixedly communicates with a separation box. The cyclone separator, the feeding assembly, the recycling barrel, the air inducing assembly and other structures are used in cooperation, so that powder which is not attached in the spraying process can be effectively removed through a multi-stage filtering system, the powder recycling rate is greatly increased, meanwhile, the powder returns to the spraying raw material box through the spiral conveying device, and the powder recycling efficiency is improved. According to the spraying device, waste of powder is avoided, the powder can be repeatedly used, consumption of raw materials is reduced, and dust generated in the spraying process can be effectively collected and recycled.

Description

Technical Field

[0001] This utility model relates to the field of powder collection technology, and in particular to a dust collection structure for electrostatic powder coating on metal surfaces. Background Technology

[0002] Electrostatic powder coating technology is widely used in metal surface coating processes due to its high coating adhesion, durability, and environmental friendliness, making it a common coating method in many industries. During electrostatic powder coating, the spray gun uses electrostatic forces to apply powder coating to the metal surface. Powder that does not adhere to the metal surface forms dust. If this dust is not collected in a timely manner, it will pollute the environment and affect the efficiency and quality of the coating process. Therefore, how to efficiently collect and reuse the dust generated during the coating process has become an important issue in powder coating technology.

[0003] A search revealed an application with application number 202420393558.X that discloses a dust collection structure for electrostatic powder coating on metal surfaces, belonging to the field of powder collection. The structure includes a powder coating structure, an air pipe installed at the outlet of an air pump, and a collection box installed at the rear end of a hollow plate and below the air pump. This invention solves the problem of low safety where operators holding spray guns and standing in the spray booth absorb some of the spray, affecting their health. The motor is started, and a rotating plate drives the hook and metal object to rotate. The handheld spray gun moves a transparent plate within an internal groove via an inner moving plate. A compression spring deforms as the transparent plate moves. The operator observes the coating process of the metal object inside the protective frame through the transparent plate. During coating, air and powder inside the protective frame are drawn in through the air extraction hole and the air pipe inside the hollow plate. The air pump then discharges the powder and air into the collection box, where a cloth bag layer expels the air, and the powder is collected by the collection box.

[0004] Existing electrostatic powder coating dust collection systems typically rely on simple filtration devices, such as bag filters. These filters are prone to clogging over time, leading to incomplete dust collection and dust leakage into the air, which affects environmental cleanliness. Direct collection of unclassified dust can also cause impurities to enter the powder coating system, affecting coating quality. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a dust collection structure for electrostatic powder coating on metal surfaces.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a dust collection structure for electrostatic powder coating on metal surfaces, including a spray booth, a dust collection frame fixedly connected to one side of the spray booth, a dust suction pipe fixedly connected to the top of the dust collection frame, a cyclone separator fixedly connected to one end of the dust suction pipe, a collection component one at the bottom of the cyclone separator, a connecting pipe fixedly connected to the top of the cyclone separator, a separation box fixedly connected to one end of the connecting pipe, a collection component two at the bottom of the separation box, a plurality of filter cartridges slidably connected inside the separation box, pulse nozzles threadedly connected to the inner walls of the plurality of filter cartridges, a dust removal component capable of supplying air to the pulse nozzles at the top of the spray booth, an air duct on one side of the separation box, an air duct assembly inside the air duct, a recovery hopper fixedly connected to the bottom of the separation box, a recovery cylinder fixedly connected to the bottom of the recovery hopper, a feeding component at one end of the recovery cylinder, and a spraying component at the other end of the recovery cylinder.

[0007] The spray booth, as the main space for metal sheet spraying operations, provides a sealed environment to prevent dust leakage. The grounding design creates an electrostatic field, causing the powder to become charged and be evenly adsorbed onto the metal surface, improving spraying efficiency. The dust collection frame guides the dust mixture to the suction pipe. The cyclone separator separates large dust particles such as metal shavings and unmelted powder in the first stage. The separation box can perform secondary filtration of fine powder and gas-solid separation. The filter cartridge surface is coated with an antistatic layer to prevent dust from adhering to the surface by static electricity. The pulse nozzle cleans the dust in reverse through pulse airflow, and the cleaning cycle is adjustable.

[0008] As a further description of the above technical solution:

[0009] The collection component includes a collection frame fixedly installed at the bottom of the cyclone separator, and a collection box is slidably connected inside the collection frame.

[0010] The collection box is a pull-out structure used to temporarily store the separated impurities and to clean it periodically.

[0011] As a further description of the above technical solution:

[0012] The second collection component includes a feed trough located at the bottom of the separation box. A second collection frame is fixedly installed at the bottom of the separation box and at the bottom of the feed trough. A second collection box is slidably connected inside the second collection frame.

[0013] The bottom of the second collection box is fixedly connected to the top of the separation box.

[0014] As a further description of the above technical solution:

[0015] The dust removal assembly includes a pulse pump fixedly installed on the top of the spray booth, and the outlet of the pulse pump is fixedly connected to a vacuum tube.

[0016] One end of the vacuum tube is fixedly connected to several pulse nozzles via a steel pipe. The pulse pump provides high-pressure gas, and the airflow ejected through the pulse nozzles cleans the filter cartridge and prevents the filter cartridge from clogging prematurely.

[0017] As a further description of the above technical solution:

[0018] The air intake assembly includes an air intake fan and a barrier net. The air intake fan is fixedly installed on the inner wall of the air intake duct by a bracket, and the barrier net is fixedly installed on the inner wall of the air intake duct and on the side close to the separation box.

[0019] The air intake assembly drives airflow circulation to maintain a negative pressure environment in the system. The barrier net is located on the inner wall of the air intake duct to prevent dust from re-entering the airflow, thereby further improving the efficiency of dust separation.

[0020] As a further description of the above technical solution:

[0021] The feeding assembly includes a drive motor fixedly installed at one end of the recycling cylinder. The output end of the drive motor rotates through the inside of the recycling cylinder and is fixedly connected to an auger blade.

[0022] The drive motor drives the auger blades through the output shaft to complete the powder conveying and recycling, and is responsible for sending the collected powder from the recycling cylinder to the spraying material box.

[0023] As a further description of the above technical solution:

[0024] The spraying assembly includes a recycling steel pipe fixedly connected to the other end of the recycling cylinder, and one end of the recycling steel pipe is fixedly connected to a spraying material box.

[0025] The inner wall of the recycled steel pipe is treated with electrostatic shielding to prevent the powder from becoming charged again and clumping together.

[0026] As a further description of the above technical solution:

[0027] A suspension rod is fixedly installed on the inner ceiling of the spray booth.

[0028] The suspension rod is used to suspend the metal plate. The workpiece is stably positioned by means of hooks or ropes, which facilitates 360° spraying.

[0029] 1. Compared with the prior art, the beneficial effects of this utility model include: by using the cyclone separator, feeding assembly, recovery cylinder and induced draft assembly in combination, the non-adhered powder during the spraying process can be effectively removed through a multi-stage filtration system, thereby greatly improving the powder recovery rate. At the same time, the powder is returned to the spraying material box through the screw conveyor, avoiding powder waste and allowing for repeated use, reducing the consumption of raw materials. Furthermore, it can effectively collect and recycle the dust generated during the spraying process, reducing dust leakage and environmental pollution, and improving the environmental friendliness of the spraying operation.

[0030] 2. Compared with the prior art, the beneficial effects of this utility model include: by using the filter cartridge, pulse nozzle, separation box and dust removal components in combination, when the filter cartridge is clogged, the pulse pump can be started to quickly blow away the dust on the surface of the filter cartridge and restore its filtration effect. The dust removal method is simple and efficient, reducing manual cleaning and equipment downtime, improving the system's operating efficiency. In addition, the filter cartridge is designed to be rotatable, and the connection between the filter cartridge and the pulse nozzle can be disconnected by simple rotation, which is convenient for replacing or maintaining the filter cartridge, making operation more convenient and reducing the labor intensity of the staff. Attached Figure Description

[0031] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0032] Figure 1 The schematic diagram shows a three-dimensional view of the overall structure of a dust collection structure for electrostatic powder coating on a metal surface according to one embodiment of the present invention.

[0033] Figure 2 The schematic diagram shows another perspective of the overall structure of a dust collection structure for electrostatic powder coating on a metal surface according to one embodiment of the present invention.

[0034] Figure 3 The schematic diagram shows a three-dimensional view of the air intake component structure of a metal surface electrostatic powder coating dust collection structure according to one embodiment of the present invention.

[0035] Figure 4 The schematic diagram shows a three-dimensional view of a dust removal component structure for collecting dust particles from electrostatic powder coating on a metal surface, according to one embodiment of the present invention.

[0036] Figure 5 The diagram illustrates a three-dimensional view of a feeding assembly structure for a dust collection structure for electrostatic powder coating on a metal surface, according to one embodiment of the present invention.

[0037] Numbered in the diagram: 1. Spray booth; 2. Dust collection frame; 3. Suction pipe; 4. Cyclone separator; 5. Connecting pipe; 6. Separation box; 7. Filter cartridge; 8. Pulse nozzle; 9. Air duct; 10. Recovery hopper; 11. Recovery cylinder; 12. Collection frame one; 13. Collection box one; 14. Feed trough; 15. Collection frame two; 16. Collection box two; 17. Pulse pump; 18. Vacuum tube; 19. Exhaust fan; 20. Barrier net; 21. Drive motor; 22. Screwdriver blades; 23. Recovery steel pipe; 24. Spray coating material box; 25. Suspension rod. Detailed Implementation

[0038] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0039] According to one embodiment of the present invention, in conjunction with Figure 1-5As shown. A dust collection structure for electrostatic powder coating on metal surfaces includes a spray booth 1, a dust collection frame 2 fixedly connected to one side of the spray booth 1, a suction pipe 3 fixedly connected to the top of the dust collection frame 2, a cyclone separator 4 fixedly connected to one end of the suction pipe 3, a collection component 1 provided at the bottom of the cyclone separator 4, a connecting pipe 5 fixedly connected to the top of the cyclone separator 4, a separation box 6 fixedly connected to one end of the connecting pipe 5, a collection component 2 provided at the bottom of the separation box 6, and several filter cartridges slidably connected inside the separation box 6. 7. Several filter cartridges 7 are threadedly connected to the inner walls of each filter cartridge 8. A dust removal assembly capable of supplying air to the pulse nozzles 8 is installed on the top of the spray booth 1. An air duct 9 is installed on one side of the separation box 6, and an air duct assembly is installed inside the air duct 9. A recovery hopper 10 is fixedly connected to the bottom of the separation box 6, and a recovery cylinder 11 is fixedly connected to the bottom of the recovery hopper 10. A feeding assembly is installed at one end of the recovery cylinder 11, and a spraying assembly is installed at the other end of the recovery cylinder 11. The spray booth 1 serves as the main body for metal plate spraying operations. The system provides a sealed environment to prevent dust leakage. A grounded design creates an electrostatic field, causing the charged powder to adhere evenly to the metal surface, improving spraying efficiency. The dust collection frame 2 guides the dust mixture towards the suction pipe 3. A cyclone separator 4 performs primary separation of large dust particles such as metal shavings and unmelted powder. The separation box 6 performs secondary filtration of fine powder and gas-solid separation. The filter cartridge 7 is coated with an anti-static layer to prevent dust from adhering electrostatically. The pulse nozzle 8 uses pulsed airflow for reverse dust cleaning, with an adjustable cleaning cycle. Through the coordinated use of the cyclone separator 4, feeding assembly, recovery cylinder 11, and induced draft assembly, a multi-stage filtration system effectively removes unattached powder during spraying, significantly improving powder recovery rate. Simultaneously, the powder is returned to the spraying material box 24 via a screw conveyor, avoiding powder waste and allowing for repeated use, reducing raw material consumption. Furthermore, it effectively collects and recycles dust generated during spraying, reducing dust leakage and environmental pollution, and improving the environmental friendliness of the spraying operation.

[0040] The first collection component includes a collection frame 12 fixedly installed at the bottom of the cyclone separator 4. A collection box 13 is slidably connected inside the collection frame 12. The collection box 13 is a pull-out structure used to temporarily store the separated impurities and clean them periodically. The second collection component includes an inlet trough 14 opened at the bottom of the separation box 6. A second collection frame 15 is fixedly installed at the bottom of the separation box 6 and at the bottom of the inlet trough 14. A second collection box 16 is slidably connected inside the second collection frame 15. The bottom of the second collection frame 15 is fixedly connected to the top of the separation box 6.

[0041] The dust removal assembly includes a pulse pump 17 fixedly installed on the top of the spray booth 1. The outlet of the pulse pump 17 is fixedly connected to a vacuum tube 18. One end of the vacuum tube 18 is fixedly connected to several pulse nozzles 8 through a steel pipe. The pulse pump 17 provides high-pressure gas, and the airflow ejected through the pulse nozzles 8 cleans the filter cartridge 7, preventing the filter cartridge 7 from clogging prematurely.

[0042] The air extraction assembly includes an air extraction fan 19 and a baffle net 20. The air extraction fan 19 is fixedly installed on the inner wall of the air extraction duct by a bracket, and the baffle net 20 is fixedly installed on the inner wall of the air extraction duct and close to the side of the separation box 6. The air extraction assembly drives the airflow to circulate and maintain the negative pressure environment of the system. The baffle net 20 is located on the inner wall of the air extraction duct and is used to prevent dust from re-entering the airflow, thereby further improving the efficiency of dust separation.

[0043] The feeding assembly includes a drive motor 21 fixedly installed at one end of the recycling cylinder 11. The output end of the drive motor 21 rotates through the inside of the recycling cylinder 11 and is fixedly connected to an auger blade 22. The drive motor 21 drives the auger blade 22 through the output shaft to complete the conveying and recycling of powder, and is responsible for sending the collected powder from the recycling cylinder 11 to the spraying material box 24.

[0044] The spraying assembly includes a recycling steel pipe 23 fixedly connected to the other end of the recycling cylinder 11. One end of the recycling steel pipe 23 is fixedly connected to the spraying material box 24. The inner wall of the recycling steel pipe 23 is electrostatically shielded to prevent the powder from becoming charged and clumping. A suspension rod 25 is fixedly installed on the inner top surface of the spraying booth 1. The suspension rod 25 is used to suspend the metal plate. The workpiece is stably positioned by means of hooks or ropes, which facilitates 360° spraying.

[0045] The working principle of this embodiment is as follows: First, during spraying, the metal plate is placed inside the spray booth 1 using hooks or ropes on the suspension rod 25. Then, the metal plate is sprayed using a spray gun. During this process, powder that does not adhere to the metal surface will form dust. Then, the induced draft fan 19 is started, thereby generating suction, which causes the dust mixture to pass through the dust collection frame 2 and enter the suction pipe 3. Then, after passing through the initial screening of the cyclone separator 4, the heavier and larger particles enter the collection box 13. Then, the mixed gas enters the separation box 6 through the connecting pipe 5. After being filtered by the filter cartridge 7 in the separation box 6, the mixed gas is further screened. Then, impurities fall into the collection box 2 16 through the feed trough 14, while the powder falls into the recovery hopper 10. At this time, the drive motor 21 is started, and its output end rotates to drive the auger blades 22 to rotate, so that the powder is recovered from the recycling steel pipe 23 into the spraying material box 24, thereby improving the utilization rate of powder, reducing waste, and reducing material costs, which has good economic benefits. Then, when the filter cartridge 7 needs to be replaced, simply rotate the filter cartridge 7 to disconnect the threaded connection of the filter cartridge 7 to the pulse nozzle 8, and the filter cartridge 7 can be pulled out. Then, when cleaning is required, simply start the pulse pump 17 to quickly spray airflow to clean the filter cartridge 7, which can effectively blow away the dust on the surface of the filter cartridge 7 and restore its filtration effect. This not only improves the service life of the filtration system, but also reduces the frequency of manual cleaning and is easy to use.

[0046] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A metal surface electrostatic powder spray painting dust collection structure comprising a spray booth (1), characterized in that, A dust collection frame (2) is fixedly connected to one side of the spray booth (1). A dust collection pipe (3) is fixedly connected to the top of the dust collection frame (2). A cyclone separator (4) is fixedly connected to one end of the dust collection pipe (3). A collection component one is provided at the bottom of the cyclone separator (4). A connecting pipe (5) is fixedly connected to the top of the cyclone separator (4). A separation box (6) is fixedly connected to one end of the connecting pipe (5). A collection component two is provided at the bottom of the separation box (6). Several filter cartridges (7) are slidably connected inside the separation box (6). Each of the filter cartridges (7) has a pulse nozzle (8) threadedly connected to its inner wall. The top of the spray booth (1) is equipped with a dust removal assembly that can supply air to the pulse nozzles (8). An air duct (9) is provided on one side of the separation box (6). An air duct assembly is provided inside the air duct (9). A recovery hopper (10) is fixedly connected to the bottom of the separation box (6). A recovery cylinder (11) is fixedly connected to the bottom of the recovery hopper (10). A feeding assembly is provided at one end of the recovery cylinder (11). A spraying assembly is provided at the other end of the recovery cylinder (11).

2. A metal surface electrostatic powder coating dust collection structure according to claim 1, characterized in that, The collection component includes a collection frame (12) fixedly installed at the bottom of the cyclone separator (4), and a collection box (13) is slidably connected inside the collection frame (12).

3. A metal surface electrostatic powder spraying dust collection structure according to claim 1, characterized in that, The second collection component includes a feed trough (14) at the bottom of the separation box (6), and a second collection frame (15) is fixedly installed at the bottom of the separation box (6) and at the bottom of the feed trough (14). A second collection box (16) is slidably connected inside the second collection frame (15).

4. The dust collection structure for electrostatic powder coating on metal surfaces according to claim 1, characterized in that, The dust removal assembly includes a pulse pump (17) fixedly installed on the top of the spray booth (1), and the outlet of the pulse pump (17) is fixedly connected to a vacuum tube (18).

5. A metal surface electrostatic powder coating dust collection structure according to claim 1, wherein The air intake assembly includes an air intake fan (19) and a barrier net (20). The air intake fan (19) is fixedly installed on the inner wall of the air intake duct by a bracket, and the barrier net (20) is fixedly installed on the inner wall of the air intake duct and on the side close to the separation box (6).

6. A metal surface electrostatic powder coating dust collection structure according to claim 1, wherein The feeding assembly includes a drive motor (21) fixedly installed at one end of the recycling cylinder (11). The output end of the drive motor (21) rotates through the inside of the recycling cylinder (11) and is fixedly connected to an auger blade (22).

7. A metal surface electrostatic powder coating dust collection structure according to claim 1, wherein The spraying assembly includes a recycling steel pipe (23) fixedly connected to the other end of the recycling cylinder (11), and one end of the recycling steel pipe (23) is fixedly connected to a spraying material box (24).

8. A metal surface electrostatic powder coating dust collection structure according to claim 1, wherein A suspension rod (25) is fixedly installed on the inner top surface of the spray booth (1).

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