Integrated secondary recovery device for dust in powder spraying room

Abstract

The utility model discloses a powder spraying room dust integrated type secondary recovery device which comprises a machine frame and a powder spraying room body, the powder spraying room body is installed in the center of the interior of the machine frame, a powder spraying room is installed in the powder spraying room body, and secondary filtering chambers are installed in the positions, on the two sides of the powder spraying room body, of the machine frame. A first-stage filter chamber is mounted in each second-stage filter chamber, a first-stage filter element is mounted in each first-stage filter chamber, a second-stage filter element is mounted in each second-stage filter chamber on one side of each first-stage filter chamber, and a fan is mounted at the top end of each second-stage filter chamber. According to the integrated secondary recovery device for the dust in the powder spraying room, the dust can be conveniently filtered in a multi-stage manner, the filtered dust can be conveniently recovered in a back-blowing manner, the dust is prevented from escaping to the outside to pollute the environment, the recovered dust can be conveniently reused, and the utilization rate of the dust is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of secondary recycling devices, specifically an integrated secondary recycling device for dust from a powder spraying booth. Background Technology

[0002] A powder coating booth is a type of equipment used for surface coating, primarily for spraying powder coatings. It is one of the common coating processes in modern manufacturing. The principle of a powder coating booth is to use electrostatic attraction to adsorb powder coatings onto the surface of the workpiece, and then cure them in an oven to form a strong and durable coating. During the powder coating process, the powder coating is sprayed out by the spray gun, forming a powder cloud. Then, through the action of a high-voltage electrostatic field, the powder is charged with static charge, giving it a certain electrostatic attraction. The workpiece surface is grounded and carries the opposite charge. Due to the interaction between opposite charges, the powder coating is adsorbed onto the workpiece surface, forming a uniform coating.

[0003] The powder is fully fluidized in the powder box of the powder supply center. The powder pump generates a siphon effect to transport the powder through the powder pipe to the spray gun. The powder is charged by the corona area of ​​the spray gun electrode, making it statically charged and adsorbed onto the grounded workpiece surface. Then, the filter exhaust creates a negative pressure inside the spray chamber, and the unadsorbed powder is carried by the airflow through the smooth inner wall pipe to the large cyclone for separation. The heavier powder particles are separated by the centrifugal force of the rotating airflow along the cyclone cylinder wall and into the conical powder collection hopper. The powder pump then transports it to the powder supply center for recycling. The lighter powder particles are carried by the exhaust airflow through the secondary pipe to the filter. The powder is finally thoroughly filtered by the filter cartridge. The built-in diffuser nozzle pulses from the inside to the outside of the filter cartridge, knocking the powder into the waste powder hopper and keeping it clean, maintaining effective exhaust power.

[0004] Existing secondary recycling devices of this type are generally not conducive to convenient multi-stage filtration of dust, and are not convenient for backflushing to recover the filtered dust. Dust can easily pollute the environment when it escapes to the outside, and it is not convenient for the dust to be reused after recovery, which greatly affects the utilization rate of dust. Utility Model Content

[0005] The purpose of this utility model is to provide an integrated two-stage dust recovery device for powder spraying booths, in order to solve the problems mentioned in the background art, such as the inconvenience of convenient multi-stage filtration of dust, the inconvenience of convenient backflushing recovery of filtered dust, the dust escaping to the outside and easily polluting the environment, and the inconvenience of reuse of recovered dust, which affect the utilization rate of dust.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an integrated two-stage dust recovery device for a powder spraying booth, comprising a frame and a powder spraying booth body. The powder spraying booth body is installed at the center of the frame. A powder spraying chamber is installed inside the powder spraying booth body. Two-stage filtration chambers are installed inside the frame on both sides of the powder spraying booth body. A primary filtration chamber is installed inside each of the two-stage filtration chambers. A primary filter element is installed inside each of the primary filtration chambers. A secondary filter element is installed inside each of the two-stage filtration chambers on one side of the primary filtration chamber. A fan is installed at the top of each of the two-stage filtration chambers. An air outlet is installed on the outer wall of each fan. A base plate is installed at the bottom of each primary filter element. A baffle is installed at the bottom of each secondary filter element.

[0007] Preferably, each of the secondary filter elements is equipped with a triangular bracket at its top and an air inlet box is installed at the bottom of each fan.

[0008] Preferably, pulse valves connected to the fan are installed on the outer wall of the frame on one side of the secondary filter chamber. A second backflush pipe is installed at one end of each pulse valve, and the second backflush pipe extends into the interior of the triangular bracket.

[0009] Preferably, pulse valve one connected to the fan is installed on the outer wall of the frame below pulse valve two, and pulse valve one extends into the interior of triangular bracket one, and triangular bracket one is installed on the top of each primary filter element.

[0010] Preferably, a powder collection hopper is installed inside the powder spraying chamber body below the powder spraying chamber, and an inclined plate is installed inside the primary filter chamber below the primary filter element, with the inclined plate extending into the powder collection hopper.

[0011] Preferably, each of the secondary filter chambers below the baffle is equipped with a powder collection box, and each powder collection box is equipped with a powder discharge valve at its bottom.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the two-stage recovery device not only realizes the convenient multi-stage filtration of dust in the integrated two-stage dust recovery device of the powder spraying room, but also facilitates the convenient back-flushing recovery of the filtered dust, prevents the dust from escaping to the outside environment and polluting the environment, but also facilitates the reuse of the recovered dust and improves the utilization rate of the dust.

[0013] The fan generates negative pressure suction, drawing dust from the powder spraying chamber into the primary filtration chamber for filtering by the primary filter element. Some dust passes through the first triangular support and enters the secondary filtration chamber, where it is filtered by the secondary filter element. The dusty gas then passes through the second triangular support and enters the air inlet box before being discharged through the outlet. This multi-stage filtration process facilitates the use of the primary and secondary filters. When dust collection is required, a pulse valve sends gas into the second back-blowing pipe, which then passes through the second triangular support and into the secondary filter element to blow off the dust from its surface. Dust is collected by the dust collection box and fed into the first-stage filter element through the first back-blowing pipe and triangular support to blow off the surface of the first-stage filter element. The dust is then conveyed to the dust collection hopper by the inclined plate and collected. The dust inside the dust collection box is discharged by the dust discharge valve. This integrated two-stage dust recovery device for the powder spraying room provides convenient multi-stage filtration of dust, facilitates convenient back-blowing recovery of filtered dust, prevents dust from escaping to the outside environment and polluting the environment, facilitates the reuse of recovered dust, and improves the utilization rate of dust, thus completing the operation of the two-stage recovery device. Attached Figure Description

[0014] Figure 1 This is a frontal cross-sectional view of the present invention.

[0015] In the diagram: 1. Frame; 2. Powder spraying booth body; 3. Powder spraying chamber; 4. Air outlet; 5. Exhaust fan; 6. Air inlet box; 8. Second backflush pipe; 9. Pulse valve two; 11. Pulse valve one; 12. Triangular support two; 13. Triangular support one; 14. Secondary filter chamber; 15. Primary filter chamber; 16. Primary filter element; 17. Secondary filter element; 19. Baffle; 21. Base plate; 22. Inclined plate; 23. Powder collection box; 24. Powder discharge valve; 25. Powder collection hopper. Detailed Implementation

[0016] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0017] Please see Figure 1An embodiment of this utility model provides an integrated two-stage dust recovery device for a powder spraying booth, comprising a frame 1 and a powder spraying booth body 2. The powder spraying booth body 2 is installed at the center of the frame 1. A powder spraying chamber 3 is installed inside the powder spraying booth body 2. Two-stage filter chambers 14 are installed inside the frame 1 on both sides of the powder spraying booth body 2. A primary filter chamber 15 is installed inside the secondary filter chamber 14. A primary filter element 16 is installed inside the primary filter chamber 15. A secondary filter element 17 is installed inside the secondary filter chamber 14 on one side of the primary filter chamber 15. An exhaust fan 5 is installed at the top of each secondary filter chamber 14. An air outlet 4 is installed on the outer wall of each exhaust fan 5. A base plate 21 is installed at the bottom of each primary filter element 16. A baffle 19 is installed at the bottom of each secondary filter element 17.

[0018] The top of each secondary filter element 17 is equipped with a triangular bracket 2 12, and the bottom of each exhaust fan 5 is equipped with an air inlet box 6.

[0019] Pulse valve 2 9 connected to the fan is installed on the outer wall of the frame 1 on one side of the secondary filter chamber 14. A second backflush pipe 8 is installed at one end of each pulse valve 2 9, and the second backflush pipe 8 extends into the interior of the triangular bracket 2 12.

[0020] Pulse valve 11 connected to the fan is installed on the outer wall of the frame 1 below pulse valve 29, and pulse valve 11 extends into the interior of triangular bracket 13. Triangular bracket 13 is installed on the top of primary filter element 16.

[0021] A powder collection hopper 25 is installed inside the powder spraying chamber body 2 below the powder spraying chamber 3. An inclined plate 22 is installed inside the primary filter chamber 15 below the primary filter element 16, and the inclined plate 22 extends into the inside of the powder collection hopper 25.

[0022] Each of the secondary filter chambers 14 below the baffle 19 is equipped with a powder collection box 23, and each powder collection box 23 is equipped with a powder discharge valve 24 at the bottom.

[0023] Working principle: Under the airflow of the exhaust fan 5, the sprayed powder passes through the primary filter element 16. Most of the powder is intercepted by the primary filter element 16 and adsorbed on its surface. Under the timed control of the pulse controller, the pulse valve 11 opens periodically, and the high-pressure airflow blows out from the inside to the outside of the primary filter element 16, blowing off the powder adhering to its surface. The powder falling off the primary filter element 16 slides into the powder collection hopper 25, where it is collected and sent to the powder supply center for processing and reuse via a powder recovery pump. A small amount of ultrafine powder, under the airflow, passes through the triangular support 13 and then through the secondary filter element 17. The remaining powder is intercepted by the secondary filter element 17 and adsorbed on its surface. Under the timed control of the pulse controller, the pulse valve 29 opens at regular intervals, and the high-pressure airflow blows out from the inside to the outside of the filter element, blowing off the powder attached to the surface of the filter element. The powder falling off the secondary filter element 17 slides into the powder collection box 23. When the workers are cleaning the powder room, they open the powder discharge valve 24, and the waste powder inside will fall out. The clean gas after secondary filtration is drawn by the airflow of the exhaust fan 5, enters the exhaust fan 5 through the triangular bracket 212, and is discharged into the air collection box after sound absorption and noise reduction treatment, and is discharged from the top.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An integrated two-stage dust recovery device for powder spraying booths, characterized in that: The system includes a frame (1) and a powder spraying chamber body (2). The powder spraying chamber body (2) is installed at the center of the frame (1). The powder spraying chamber body (2) is installed inside the powder spraying chamber body (2). The frame (1) on both sides of the powder spraying chamber body (2) is equipped with a secondary filter chamber (14). The secondary filter chamber (14) is equipped with a primary filter chamber (15). The primary filter chamber (15) is equipped with a primary filter element (16). The secondary filter chamber (14) on one side of the primary filter chamber (15) is equipped with a secondary filter element (17). The top of the secondary filter chamber (14) is equipped with an exhaust fan (5). The exhaust fan (5) is equipped with an air outlet (4) on its outer wall. The bottom of the primary filter element (16) is equipped with a base plate (21). The bottom of the secondary filter element (17) is equipped with a baffle (19).

2. The integrated two-stage dust recovery device for powder spraying booths according to claim 1, characterized in that: Each of the secondary filter elements (17) is equipped with a triangular bracket (12) at its top, and each of the exhaust fans (5) is equipped with an air inlet box (6) at its bottom.

3. The integrated two-stage dust recovery device for powder spraying booths according to claim 1, characterized in that: On the outer wall of the frame (1) on one side of the secondary filter chamber (14), pulse valves (9) connected to the fan are installed. A second backflush pipe (8) is installed at one end of each pulse valve (9), and the second backflush pipe (8) extends into the interior of the triangular support (12).

4. The integrated secondary dust recovery device for powder spraying booths according to claim 3, characterized in that: The outer wall of the frame (1) below the pulse valve (9) is equipped with a pulse valve (11) connected to the fan, and the pulse valve (11) extends into the interior of the triangular bracket (13). The top of the primary filter element (16) is equipped with the triangular bracket (13).

5. The integrated two-stage dust recovery device for powder spraying booths according to claim 1, characterized in that: A powder collection hopper (25) is installed inside the powder spraying chamber body (2) below the powder spraying chamber (3), and an inclined plate (22) is installed inside the primary filter chamber (15) below the primary filter element (16), and the inclined plate (22) extends into the inside of the powder collection hopper (25).

6. The integrated two-stage dust recovery device for powder spraying booths according to claim 1, characterized in that: Each of the secondary filtration chambers (14) below the baffle (19) is equipped with a powder collection box (23), and each powder collection box (23) is equipped with a powder discharge valve (24) at its bottom.

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