Powder recovery structure for high-bay lamp electrostatic powder spraying

Abstract

The utility model relates to powder recovery structure technical field and disclose a kind of powder recovery structure for high shed lamp electrostatic plastic spraying, including fixed base, powder recovery assembly is provided on fixed base, powder recovery assembly includes plastic spraying box, plastic spraying box is fixedly connected on the upper surface of fixed base by fixed bolt, four corners inside plastic spraying box are all fixedly connected with rectangular dust collection box by fixed bolt, the side of four rectangular dust collection box facing plastic spraying box inner wall is all fixedly connected with the first dust collection pipe communicated with its interior by connector, by setting powder recovery assembly, in high shed lamp electrostatic plastic spraying powder recovery process, compared with the structure that traditional single fixed dust collection, recovery efficiency is low, powder waste is serious and dust is easy to overflow and pollute environment, can accurately adapt to the environmental protection and cost control demand of high shed lamp electrostatic plastic spraying, solve the problem that traditional device is not comprehensive, powder utilization rate is low, dust emission is overproof.

Description

Technical Field

[0001] This utility model relates to the field of powder recycling structure technology, specifically a powder recycling structure for electrostatic powder coating of high bay lights. Background Technology

[0002] As large lighting equipment, high bay lights require electrostatic powder coating for their metal substrates (such as aluminum alloy shells and steel supports) to achieve corrosion and rust prevention as well as aesthetic enhancement. The electrostatic powder coating process uses high-voltage electrostatics to adsorb powder coating onto the workpiece surface, followed by high-temperature curing to form a coating. In this process, the utilization rate of the powder coating directly affects production costs, while dust emissions are related to environmental compliance. The characteristics of high bay lights place core collaborative requirements on the powder recovery structure: first, comprehensive recovery, covering the entire powder coating box, including workpiece edges and corners, and the area along the movement trajectory of the powder coating head, with no blind spots; second, dynamic adaptability, able to synchronously adjust the recovery range to follow the movement of the machine tool's powder coating head, capturing suspended powder; third, efficient separation, achieving complete separation of powder and air, allowing for reuse of recovered powder and ensuring compliant air emissions; fourth, environmentally friendly sealing, preventing powder spillage and pollution of the workshop environment; and fifth, cost controllability, reducing powder procurement costs through high recovery rates.

[0003] Currently, the existing powder recovery technology for electrostatic powder coating of high bay lights in the industry mainly adopts the traditional technical solution of single fixed dust collection and simple separation. Specifically, only 1-2 fixed dust collection ports are set in the top or two sides of the powder coating box. The dust collection ports are connected to a simple fan and a cyclone separator through pipes. The position of the dust collection ports is fixed and cannot move with the powder coating head. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a powder recovery structure for electrostatic powder coating of high bay lights. It solves the problem that the existing technology for powder recovery in electrostatic powder coating of high bay lights mainly adopts a single fixed dust collection and simple separation. Specifically, only 1-2 fixed dust collection ports are set in the top or two sides of the powder coating box. The dust collection ports are connected to a simple fan and a cyclone separator through pipes. The position of the dust collection ports is fixed and cannot move with the powder coating head.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a powder recovery structure for electrostatic powder coating of high bay lights, including a fixed base, a powder recovery component on the fixed base, the powder recovery component including a powder coating box, the powder coating box being fixedly connected to the upper surface of the fixed base by fixing bolts, and rectangular dust collection boxes being fixedly connected to the four corners inside the powder coating box by fixing bolts, and the four rectangular dust collection boxes facing the inner wall of the powder coating box being fixedly connected to a first dust collection pipe communicating with the inside of the box by connectors;

[0008] Among them, the four first suction pipes all penetrate through the outer surface of the powder coating box, and the inside of the powder coating box is fixedly welded with partitions. The upper surface of the partitions is fixedly connected to servo cylinders by bolts.

[0009] The telescopic end of the servo cylinder is fixedly connected to a moving plate by bolts. Two connecting plates are fixedly welded to the left side of the moving plate, and the left ends of the two connecting plates slide through the left side of the powder coating box.

[0010] The lower surfaces of the two connecting plates are fixedly welded with L-shaped movable plates. The right ends of the two L-shaped movable plates slide through into the interior of the powder coating box. The right ends of the two L-shaped movable plates are fixedly connected to a movable dust collection box by bolts. The movable dust collection box is located below the partition.

[0011] Preferably, a spiral hose communicating with the interior of the movable dust collection box is fixedly connected to the right side of the movable dust collection box via a connector, and a fifth dust collection pipe communicating with the interior of the spiral hose is fixedly connected to the right side of the spiral hose via a connector.

[0012] The right side of the fifth suction pipe extends through the right side of the powder coating box;

[0013] The right side of the powder coating box is fixedly connected to a connecting pipe via a connector.

[0014] Preferably, the fifth suction pipe and the four first suction pipes are all fixedly connected to the connecting pipe at their ends located outside the powder coating box via connectors, and the fifth suction pipe and the four first suction pipes are all connected to the interior of the connecting pipe.

[0015] Preferably, a cyclone separator is fixedly connected to the upper surface of the fixed base by bolts. The cyclone separator is located on the right side of the powder coating box. The air inlet of the cyclone separator is fixedly connected to a second dust suction pipe through a connector. The right end of the second dust suction pipe is fixedly connected to the connecting pipe through a connector.

[0016] The cyclone separator outlet is fixedly connected to a third suction pipe via a connector.

[0017] Preferably, the upper surface of the fixed base is fixedly connected to a fan by bolts, and the front end of the third dust suction pipe is fixedly connected to the input end of the fan by a connector.

[0018] Preferably, the output end of the fan is fixedly connected to a fourth suction pipe via a connector.

[0019] Preferably, a filter box is fixedly connected to the upper surface of the fixed base by bolts, the air inlet of the filter box is fixedly connected to the four dust suction pipes by connectors, and an air outlet pipe communicating with the interior of the filter box is fixedly welded to the left side of the filter box.

[0020] Preferably, a protective door is fixedly installed on the left side of the powder coating box via a connector.

[0021] (III) Beneficial Effects

[0022] Compared with the prior art, this utility model provides a powder recovery structure for electrostatic powder coating of high bay lights, which has the following beneficial effects:

[0023] By setting up a powder recovery component, during the powder recovery process of electrostatic powder coating for high bay lights, the rectangular dust collection boxes at the four corners of the powder coating box and the first dust collection pipe cover the edge area, while the movable dust collection box driven by the servo cylinder dynamically covers the central powder coating area, achieving all-round, dead-angle-free recovery. The servo cylinder drives the moving plate, connecting plate, and L-shaped moving plate in linkage, and the movable dust collection box moves back and forth along the powder coating trajectory. The spiral hose ensures smooth dust collection during movement. The coarse powder is separated by centrifugal separation through a cyclone separator, and the fine dust is filtered in a secondary filter box. The fan provides negative pressure power to achieve efficient separation of dust and air. This achieves a comprehensive effect of all-round powder recovery, dynamic adaptation to the powder coating trajectory, multi-stage dust purification, and powder recycling and reuse. Compared with the traditional single fixed dust collection, which has low recovery efficiency, serious powder waste, and easy dust overflow and environmental pollution, this structure can accurately adapt to the environmental protection and cost control requirements of electrostatic powder coating for high bay lights. It solves the problems of incomplete recovery, low powder utilization rate, and excessive dust emissions of traditional devices, improves powder recovery efficiency, reduces raw material waste and environmental treatment costs, and enhances the greenness and economy of powder coating operations. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the powder recovery structure for electrostatic powder coating of high bay lights according to this utility model;

[0025] Figure 2 This is a schematic diagram of the upper surface of the entire utility model;

[0026] Figure 3 This is a schematic diagram of the interior of the powder coating box of this utility model;

[0027] Figure 4 This is a schematic diagram showing the position of the spiral hose of this utility model.

[0028] In the diagram: 1. Fixed base; 2. First suction pipe; 3. Powder coated box; 4. L-shaped moving plate; 5. Connecting plate; 6. Second suction pipe; 7. Cyclone separator; 8. Third suction pipe; 9. Fan; 10. Connecting pipe; 11. Filter box; 12. Fourth suction pipe; 13. Fifth suction pipe; 14. Moving plate; 15. Movable suction box; 16. Partition; 17. Rectangular suction box; 18. Spiral hose; 19. Servo cylinder. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-4 This utility model provides a new technical solution: a powder recovery structure for electrostatic powder coating of high bay lights, including a fixed base 1, a powder recovery component on the fixed base 1, the powder recovery component including a powder coating box 3, the powder coating box 3 is fixedly connected to the upper surface of the fixed base 1 by fixing bolts, and rectangular dust collection boxes 17 are fixedly connected to the four corners inside the powder coating box 3 by fixing bolts. The four rectangular dust collection boxes 17 facing the inner wall of the powder coating box 3 are all fixedly connected to the first dust collection pipe 2 communicating with the inside by connectors.

[0031] Among them, the four first suction pipes 2 all penetrate through the outer surface of the powder coating box 3. The interior of the powder coating box 3 is fixedly welded with a partition 16, and the upper surface of the partition 16 is fixedly connected with a servo cylinder 19 by bolts.

[0032] Among them, the telescopic end of the servo cylinder 19 is fixedly connected to the moving plate 14 by bolts. Two connecting plates 5 are fixedly welded to the left side of the moving plate 14. The left ends of the two connecting plates 5 slide through the left side of the powder coating box 3.

[0033] Among them, L-shaped movable plates 4 are fixedly welded to the lower surface of the two connecting plates 5. The right ends of the two L-shaped movable plates 4 slide through into the interior of the powder coating box 3. The right ends of the two L-shaped movable plates 4 are fixedly connected to a movable dust collection box 15 by bolts. The movable dust collection box 15 is located below the partition 16.

[0034] Furthermore, a spiral hose 18 communicating with the interior is fixedly connected to the right side of the movable dust collection box 15 via a connector, and a fifth dust collection pipe 13 communicating with the interior is fixedly connected to the right side of the spiral hose 18 via a connector.

[0035] Among them, the right side of the fifth suction pipe 13 extends through the right side of the powder coating box 3;

[0036] The right side of the powder coating box 3 is fixedly connected to the connecting pipe 10 via a connector.

[0037] Furthermore, the fifth suction pipe 13 and the four first suction pipes 2 are all fixedly connected to the connecting pipe 10 at one end outside the powder coating box 3 via connectors, and the fifth suction pipe 13 and the four first suction pipes 2 are all connected to the interior of the connecting pipe 10.

[0038] Furthermore, a cyclone separator 7 is fixedly connected to the upper surface of the fixed base 1 by bolts. The cyclone separator 7 is located on the right side of the powder coating box 3. The air inlet of the cyclone separator 7 is fixedly connected to the second dust suction pipe 6 by a connector. The right end of the second dust suction pipe 6 is fixedly connected to the connecting pipe 10 by a connector.

[0039] The cyclone separator 7 has a third suction pipe 8 fixedly connected to its air outlet via a connector.

[0040] Furthermore, the upper surface of the fixed base 1 is fixedly connected to the fan 9 by bolts, and the front end of the third dust suction pipe 8 is fixedly connected to the input end of the fan 9 by a connector.

[0041] Furthermore, the output end of the fan 9 is fixedly connected to the fourth suction pipe 12 via a connector.

[0042] Furthermore, a filter box 11 is fixedly connected to the upper surface of the fixed base 1 by bolts. The air inlet of the filter box 11 is fixedly connected to the four dust suction pipes 12 by a connector. An air outlet pipe communicating with the interior of the filter box 11 is fixedly welded to the left side of the filter box 11.

[0043] Furthermore, a protective door is fixedly installed on the left side of the powder-coated box 3 via a connector.

[0044] Furthermore, when using the powder recovery structure for electrostatic powder coating of high bay lights, the powder coating preparation is first carried out: open the protective door on the left side of the powder coating box 3, place the high bay light workpiece to be powder coated under the partition 16 inside the powder coating box 3, close the protective door, the protective door ensures that the powder coating process is carried out in a closed space, prevents powder from overflowing and polluting the environment, and provides safety protection for subsequent powder coating operations.

[0045] First, the blower 9 is started. The negative pressure generated by the blower is conducted to the connecting pipe 10 through the fourth suction pipe 12, filter box 11, third suction pipe 8, cyclone separator 7, and second suction pipe 6. This causes the suction components in the powder coating box 3 to form a negative pressure suction force. The rectangular suction boxes 17 at the four corners continuously absorb the scattered powder in the corner area of ​​the powder coating box 3 through the first suction pipe 2, covering a fixed edge collection range and preventing powder from accumulating in the corners.

[0046] Among them, the servo cylinder 19 is started synchronously, and its telescopic end drives the moving plate 14 to move back and forth left and right. The moving plate 14 drives the L-shaped moving plate 4 to slide synchronously through the connecting plate 5. The L-shaped moving plate 4 drives the movable dust collection box 15 to move left and right under the partition 16. The movable dust collection box 15 dynamically adjusts its position according to the spraying trajectory of the spray gun, accurately capturing the suspended powder in the spraying area, solving the problem that traditional fixed dust collection cannot cover the dynamic area of ​​spraying. The spiral hose 18 can flexibly extend and deform when the movable dust collection box 15 moves, ensuring that the connection between the fifth dust collection pipe 13 and the movable dust collection box 15 is always smooth and does not affect the movement and dust collection effect.

[0047] The powder collected by each dust collection component flows into the connecting pipe 10 through the first dust collection pipe 2 and the fifth dust collection pipe 13, and then enters the cyclone separator 7 through the second dust collection pipe 6. The cyclone separator 7 uses centrifugal force to initially separate the powder particles from the air. The heavier powder particles settle to the bottom of the separator and can be recycled and reused periodically. The dust-laden air after initial separation is sucked into the fan 9 through the third dust collection pipe 8 and then sent into the filter box 11 through the fourth dust collection pipe 12. The filter material in the filter box 11 performs secondary filtration of fine dust. The filtered clean air is discharged from the air outlet pipe, achieving the dust emission concentration meeting the standard.

[0048] After powder coating is completed, the powder coating gun and servo cylinder 19 are turned off. The blower 9 continues to run for 3-5 minutes to ensure that all residual powder in the powder coating box 3 is completely sucked into the recovery system. Then, the blower 9 is turned off, the protective door is opened, and the powder-coated high-bay light workpiece is removed. Simultaneously, the recovered powder at the bottom of the cyclone separator 7 can be collected and reused in the powder coating process, improving powder utilization and reducing production costs.

[0049] In this system, by setting up a powder recovery component, during the electrostatic powder recovery process of the high-bay light spray coating, the rectangular dust collection boxes 17 at the four corners of the spray coating box 3 and the first dust collection pipe 2 cover the edge area, while the movable dust collection box 15 driven by the servo cylinder 19 dynamically covers the central spray coating area, achieving all-round, dead-angle-free recovery. The servo cylinder 19 drives the moving plate 14, connecting plate 5, and L-shaped moving plate 4 in linkage, and the movable dust collection box 15 moves left and right along the spray coating trajectory. The spiral hose 18 ensures smooth dust collection during movement. The coarse powder is separated by centrifugal separation by the cyclone separator 7, and the fine dust is filtered a second time by the filter box 11. The fan... 9. It provides negative pressure power to achieve efficient separation of dust and air, thereby realizing the comprehensive effects of all-round powder recovery, dynamic adaptation to the powder coating trajectory, multi-stage dust purification, and powder recycling. Compared with the traditional single fixed dust collection, low recovery efficiency, serious powder waste and easy dust overflow and environmental pollution, it can accurately adapt to the environmental protection and cost control requirements of high-bay light electrostatic powder coating, solve the problems of incomplete recovery, low powder utilization rate and excessive dust emission of traditional devices, improve powder recovery efficiency, reduce raw material waste and environmental treatment costs, and improve the greenness and economy of powder coating operation.

[0050] Example 1: Application of a high-efficiency cyclone separator and HEPA filter box in replacing the original cyclone separator 7 and filter box 11 in a fine powder recovery scenario.

[0051] A lighting factory uses ultrafine powder coating (particle size ≤ 5μm) in the production of high bay lights. The original cyclone separator 7 had limited centrifugal separation effect on the fine powder, resulting in a large amount of fine powder failing to settle and entering the filter box 11 with the airflow. The ordinary filter media in the original filter box 11 was easily clogged by the fine powder, requiring frequent replacement of the filter media, leading to interruption of recycling, excessive fine powder emission concentration, pollution of the workshop environment, and significant waste of fine powder, increasing raw material costs. Therefore, the original cyclone separator 7 was replaced with a high-efficiency staged cyclone separator, and the filter box 11 was replaced with a HEPA high-efficiency filter box with the same connection interface as the original components. The high-efficiency separator enhances fine powder settling, and the HEPA filter provides higher filtration accuracy.

[0052] The high-efficiency cyclone separator enhances the centrifugal separation effect of fine powder through a multi-layer flow guiding structure, significantly improving the fine powder settling rate and greatly reducing the amount of fine powder entering the filter box. The HEPA high-efficiency filter has a filtration accuracy of 0.3μm, which can intercept the remaining fine powder. The emission concentration meets environmental protection standards, the filter media clogging cycle is extended, and there is no need for frequent replacement. The continuity of recycling operations is improved, fine powder waste is reduced, and raw material costs are lowered.

[0053] The high-efficiency cyclone separator and HEPA filter box form a dual purification of graded separation and deep filtration, which makes the fine powder recovery more thorough. The recovered fine powder can be reused. It works smoothly with the power transmission of the fan 9 and the suction pipe. The negative pressure suction is not affected. The recovery efficiency of the movable suction box 15 and the rectangular suction box 17 is not affected by the structural optimization. The pressure drop of the high-efficiency separator is comparable to that of the original cyclone separator. It does not increase the fan load and operates stably.

[0054] The new separator and filter box have the same inlet and outlet dimensions and connection methods as the original components, and can be directly replaced and installed without modifying the second suction pipe 6, the fourth suction pipe 12 and other pipelines. The HEPA filter can be removed and replaced separately, making maintenance convenient. It is compatible with the operating logic of the existing recycling system and does not affect the dynamic recycling function of the servo cylinder 19 and the movable dust collection box 15.

[0055] Example 2: Application of multiple sets of side-by-side movable vacuum cleaner boxes replacing the original movable vacuum cleaner box 15 in a large high-bay light powder coating scene.

[0056] A lighting factory produces large high bay lights (length ≥ 3m). The powder coating area has a large horizontal span. The original movable dust collection box 15 was a single structure with limited coverage width. During powder coating, the path of the powder coating gun needed to be frequently adjusted. The single dust collection box could not cover the entire surface of the workpiece at the same time, resulting in untimely recovery of suspended powder in the middle and sides of the large workpiece, increasing the risk of powder spillage. The rectangular dust collection box 17 in the corner area did not cover enough, and powder accumulated under the large workpiece, with obvious blind spots for recovery. At this time, the original movable dust collection box 15 was replaced with three sets of movable dust collection boxes arranged side by side. Each dust collection box was equipped with a side suction port. The installation dimensions were the same as the original dust collection box. It was fixed to the L-shaped movable plate 4 through connectors to adapt to the wide-width powder coating requirements of large workpieces.

[0057] Three sets of parallel dust collection boxes expand the lateral coverage width. Together with the side dust collection ports, they can fully cover the powder coating area of ​​large high bay lights, eliminating blind spots in the middle and sides. The dust collection boxes move synchronously with the L-shaped moving plate 4 driven by the servo cylinder 19, precisely matching the trajectory of the powder coating gun. The efficiency of capturing suspended powder is significantly improved. Powder under the workpiece and at the corners is sucked in synchronously, eliminating accumulation and reducing the risk of powder spillage, resulting in a cleaner workshop environment.

[0058] Multiple vacuum boxes are connected to the fifth vacuum tube 13 via the same spiral hose 18. The flexible and extensible characteristics of the hose are not affected by the increase in the number of vacuum boxes, ensuring smooth airflow. Together with the rectangular vacuum boxes 17 at the four corners of the powder-coated box 3, it forms a full-area coverage of dynamic wide-range recycling and fixed corner recycling, with no recycling dead corners. The driving force of the servo cylinder 19 can meet the movement needs of multiple vacuum boxes without affecting the smoothness of movement, and the recycling process is continuous and uninterrupted.

[0059] The installation interface of the new vacuum box and the connection method with the L-shaped moving plate 4 are exactly the same as the original movable vacuum box 15. It can be directly replaced and installed without modifying the servo cylinder 19, connecting plate 5 and other drive components. The total weight of multiple vacuum boxes is moderate and does not increase the load on the L-shaped moving plate 4. The internal space of the powder coating box 3 can accommodate it without affecting the placement of workpieces and powder coating operations, and it is suitable for the quick disassembly and assembly requirements of existing equipment.

[0060] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A powder recycling structure for electrostatic powder coating of high bay lights, comprising a fixed base (1), characterized in that: The fixed base is provided with a powder recovery assembly, which includes a powder coating box (3). The powder coating box (3) is fixedly connected to the upper surface of the fixed base (1) by fixing bolts. Rectangular dust collection boxes (17) are fixedly connected to the four corners inside the powder coating box (3) by fixing bolts. The four rectangular dust collection boxes (17) facing the inner wall of the powder coating box (3) are fixedly connected to the first dust collection pipe (2) communicating with the inside by connectors. Among them, the four first suction pipes (2) all penetrate through the outer surface of the powder coating box (3), and the inside of the powder coating box (3) is fixedly welded with a partition (16). The upper surface of the partition (16) is fixedly connected with a servo cylinder (19) by bolts. Among them, the telescopic end of the servo cylinder (19) is fixedly connected to the moving plate (14) by bolts. Two connecting plates (5) are fixedly welded to the left side of the moving plate (14). The left ends of the two connecting plates (5) slide through the left side of the powder coating box (3). Among them, the lower surfaces of the two connecting plates (5) are fixedly welded with L-shaped moving plates (4), and the right ends of the two L-shaped moving plates (4) slide through into the interior of the spray coating box (3). The right ends of the two L-shaped moving plates (4) are fixedly connected with movable dust collection boxes (15) by bolts. The movable dust collection boxes (15) are located below the partition (16).

2. The powder recovery structure for electrostatic powder coating of high bay lights according to claim 1, characterized in that: The right side of the movable vacuum box (15) is fixedly connected to a spiral hose (18) communicating with its interior via a connector, and the right side of the spiral hose (18) is fixedly connected to a fifth vacuum pipe (13) communicating with its interior via a connector. The right side of the fifth suction pipe (13) extends through the right side of the spray coating box (3); The right side of the powder coating box (3) is fixedly connected to a connecting pipe (10) via a connector.

3. The powder recovery structure for electrostatic powder coating of high bay lights according to claim 2, characterized in that: The fifth suction pipe (13) and the four first suction pipes (2) are all fixedly connected to the connecting pipe (10) at one end outside the spray coating box (3) through a connector. The fifth suction pipe (13) and the four first suction pipes (2) are all connected to the inside of the connecting pipe (10).

4. The powder recovery structure for electrostatic powder coating of high bay lights according to claim 1, characterized in that: The upper surface of the fixed base (1) is fixedly connected to a cyclone separator (7) by bolts. The cyclone separator (7) is located on the right side of the powder coating box (3). The air inlet of the cyclone separator (7) is fixedly connected to a second dust suction pipe (6) by a connector. The right end of the second dust suction pipe (6) is fixedly connected to the connecting pipe (10) by a connector. The cyclone separator (7) has a third suction pipe (8) fixedly connected to its air outlet via a connector.

5. The powder recovery structure for electrostatic powder coating of high bay lights according to claim 1, characterized in that: The upper surface of the fixed base (1) is fixedly connected to the fan (9) by bolts, and the front end of the third dust suction pipe (8) is fixedly connected to the input end of the fan (9) by a connector.

6. The powder recovery structure for electrostatic powder coating of high bay lights according to claim 5, characterized in that: The output end of the fan (9) is fixedly connected to the fourth suction pipe (12) via a connector.

7. The powder recovery structure for electrostatic powder coating of high bay lights according to claim 1, characterized in that: The upper surface of the fixed base (1) is fixedly connected to the filter box (11) by bolts. The air inlet of the filter box (11) is fixedly connected to the four dust suction pipes (12) by connectors. The left side of the filter box (11) is fixedly welded with an air outlet pipe that communicates with its interior.

8. The powder recovery structure for electrostatic powder coating of high bay lights according to claim 1, characterized in that: A protective door is fixedly installed on the left side of the powder coating box (3) via a connector.

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