A zinc spraying room for processing circuit board with ventilation mechanism
By introducing an air intake mechanism, a follow-up ventilation mechanism, and a spray settling system into the zinc spraying room, the problem of zinc powder diffusion was solved, achieving efficient air purification and zinc powder settling, thus protecting worker health and the environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN WEIDEXIN ELECTRONICS CO LTD
- Filing Date
- 2025-09-12
- Publication Date
- 2026-08-04
AI Technical Summary
The zinc powder and harmful gases generated during the zinc spraying process pollute the processing environment and endanger workers' health. The existing zinc spraying room has poor ventilation, and the diffusion of zinc powder is difficult to control.
A zinc spraying chamber with a ventilation system was designed, including an air inlet mechanism, a follow-up ventilation mechanism, a dust removal fan, and a spray settling mechanism. Zinc powder is captured by negative pressure suction and water mist settling technology, shortening the ventilation path and performing settling treatment.
It effectively prevents zinc powder from spreading into the workers' breathing zone, reduces environmental pollution, achieves efficient air purification and zinc powder settling, and reduces the harm to workers' health.
Smart Images
Figure CN224591027U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit board processing technology, specifically to a zinc spraying room for circuit board processing with a ventilation mechanism. Background Technology
[0002] A circuit board, also known as a printed circuit board (PCB), is a core component in electronic devices used to support and connect electronic components. Conductive lines are formed on an insulating substrate using printing and etching techniques to achieve electrical connections and signal transmission between electronic components. PCBs are widely used in automotive, aerospace, medical, and consumer electronics industries. During manufacturing, PCBs undergo zinc spraying to enhance the corrosion resistance and solderability of the copper layer, while also protecting it from oxidation.
[0003] When processing circuit boards in a zinc spraying booth, the process generates a large amount of harmful zinc powder and gases, which pollute the processing environment and endanger health. However, zinc spraying booths typically rely on fixed ventilation openings located on the exterior walls, far from the spraying points. This allows zinc powder to diffuse into the workers' breathing zone, making it difficult to remove. Furthermore, untreated zinc powder discharged from these booths pollutes the environment. Therefore, we propose a zinc spraying booth for circuit board processing with a ventilation system. Utility Model Content
[0004] The purpose of this invention is to provide a zinc spraying room for circuit board processing with a ventilation mechanism to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a zinc spraying room for circuit board processing with a ventilation mechanism, comprising a zinc spraying room and further comprising...
[0006] An air intake mechanism is provided on the outer wall at the bottom of the zinc spraying chamber. The air intake mechanism includes an air inlet and a blower. The air inlet is located inside the side wall at the bottom of the zinc spraying chamber, and the blower is installed inside the air inlet.
[0007] A zinc spraying gun is installed in a slider below the top crossbeam of the zinc spraying chamber; a follow-up ventilation mechanism is set on one side of the slider, and the follow-up ventilation mechanism includes a clamp, a ventilation suction pipe, a telescopic branch pipe and a dust suction hood. The ventilation suction pipe is set inside the clamp on one side of the slider, and the clamp is fixedly connected to the slider. The telescopic branch pipe and the dust suction hood are respectively installed at the top and bottom of the ventilation suction pipe.
[0008] A dust removal fan is installed inside the top chamber of the zinc spraying room, and a dust extraction main pipe is installed at the input end of the dust removal fan. The bottom end of the dust extraction main pipe extends into the interior of the zinc spraying room and is connected to a retractable branch pipe. An air supply inclined pipe is installed at the output end of the dust removal fan.
[0009] A spray settling mechanism is installed on the top of the zinc spraying chamber above the air supply inclined pipe. The spray settling mechanism includes a spray main pipe, spray branch pipes, and atomizing nozzles. The spray main pipe is installed above the air supply inclined pipe, the spray branch pipes are installed at the bottom end of the spray main pipe, and the bottom end of the spray branch pipes extends into the interior of the air supply inclined pipe. The atomizing nozzles are installed at the bottom end of the spray branch pipes.
[0010] Preferably, the air intake mechanism further includes a dustproof net, which is installed at one end inside the air intake.
[0011] Preferably, a motor is installed inside the crossbeam, and a lead screw is installed at the output end of the motor, with one end of the slider extending into the interior of the crossbeam and engaging with the lead screw thread.
[0012] Preferably, the follow-up ventilation mechanism further includes a spring and an arc-shaped clamp. The spring is installed on the two inner side walls of the clamp seat, and the arc-shaped clamp is fixed to one end of the spring. The arc-shaped clamp is in close contact with the ventilation suction pipe.
[0013] Preferably, a valve is installed at the bottom of the ventilation suction pipe above the dust hood.
[0014] Preferably, one end of the spray main extends to the outside of the top chamber of the zinc spraying room and is equipped with a water pipe.
[0015] Preferably, a sewage tank is provided on one side of the zinc spraying room, and a pressure relief port is installed on one side of the top of the sewage tank, and a return pipe is installed on the other side of the top of the sewage tank, with an exhaust pipe installed at the top of the return pipe.
[0016] Preferably, the dust removal fan is connected to the return pipe through an air supply duct, and the air supply duct has an inclined structure with the left side lower than the right side.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] By fixing the follow-up ventilation mechanism to the side of the zinc spray gun and moving synchronously with it, the dust suction hood is always suspended above the zinc spray gun through the telescopic branch pipe. The ventilation suction pipe is stably fixed in the clamp seat by the elastic clamping of springs and arc-shaped clamps. When the dust removal fan is started, the dust extraction main pipe establishes negative pressure through the ventilation suction pipe. The zinc powder generated by zinc spraying is captured by the dust suction hood in time to prevent it from spreading to the worker's breathing area. The zinc powder enters the air supply inclined pipe through the telescopic branch pipe. The blower draws in outside air from the air inlet. The dust screen filters the air. The clean air rises vertically to form an air circulation path. The vertical ventilation path of bottom inlet and top outlet is adopted, which shortens the ventilation path and improves the ventilation effect.
[0019] The main spray pipe is connected to the industrial water supply via a water pipe. The water source is diverted into the spray branch pipes, and then water mist is generated through atomizing nozzles. The zinc powder is wetted and settled in the water mist. The mud-water mixture slides into the return pipe along the inclined air supply pipe and finally completes sedimentation and separation in the sewage tank. The purified air is discharged through the exhaust pipe in compliance with standards. By treating the zinc powder to settle, the harm caused by the direct discharge of zinc powder is reduced. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the front cross-sectional structure of this utility model;
[0021] Figure 2 This is an enlarged structural schematic diagram of the follow-up ventilation mechanism of this utility model;
[0022] Figure 3 This is a top view of the follow-up ventilation mechanism of this utility model;
[0023] Figure 4 This is an enlarged structural schematic diagram of the spray settling mechanism of this utility model.
[0024] In the diagram: 1. Zinc spraying room; 101. Top chamber of zinc spraying room; 2. Air inlet mechanism; 3. Air inlet; 4. Blower; 5. Dustproof net; 6. Sewage tank; 7. Pressure relief port; 8. Return pipe; 9. Exhaust pipe; 10. Water pipe; 11. Spray settling mechanism; 12. Inclined air supply pipe; 13. Dust removal fan; 14. Main dust extraction pipe; 15. Follow-up ventilation mechanism; 16. Crossbeam; 17. Motor; 18. Lead screw; 19. Zinc spraying gun; 20. Clamp; 21. Spring; 22. Arc-shaped clamp; 23. Ventilation suction pipe; 24. Telescopic branch pipe; 25. Valve; 26. Dust suction hood; 27. Slider; 28. Main spray pipe; 29. Branch spray pipe; 30. Atomizing nozzle. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of this utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0027] Please see Figure 1-4 One embodiment of this utility model provides: a zinc spraying room for circuit board processing with a ventilation mechanism, including a zinc spraying room 1, and further including...
[0028] Air intake mechanism 2 is installed on the outer wall at the bottom of zinc spraying chamber 1. Air intake mechanism 2 includes air inlet 3 and blower 4. Air inlet 3 is installed inside the side wall at the bottom of zinc spraying chamber 1, and blower 4 is installed inside air inlet 3.
[0029] Specifically, the blower 4 draws in outside air from the air inlet 3, the dust filter 5 filters the air, and the clean air rises vertically to form an air circulation path. The bottom-in and top-out vertical ventilation path is adopted, which shortens the ventilation path and improves the ventilation effect.
[0030] A zinc spraying gun 19 is installed in a slider 27 below the top crossbeam 16 of the zinc spraying room 1; a follow-up ventilation mechanism 15 is provided on one side of the slider 27. The follow-up ventilation mechanism 15 includes a clamp 20, a ventilation suction pipe 23, a telescopic branch pipe 24, and a dust suction hood 26. The ventilation suction pipe 23 is provided inside the clamp 20 on one side of the slider 27. The clamp 20 is fixedly connected to the slider 27. The telescopic branch pipe 24 and the dust suction hood 26 are respectively installed at the top and bottom of the ventilation suction pipe 23.
[0031] Dust removal fan 13 is installed inside the top chamber 101 of the zinc spraying room 1. The input end of the dust removal fan 13 is equipped with a dust extraction main pipe 14, and the bottom end of the dust extraction main pipe 14 extends into the interior of the zinc spraying room 1 and is connected to the telescopic branch pipe 24. The output end of the dust removal fan 13 is equipped with an air supply inclined pipe 12.
[0032] The spray settling mechanism 11 is installed on the top of the zinc spraying chamber 101 above the air supply inclined pipe 12. The spray settling mechanism 11 includes a spray main pipe 28, a spray branch pipe 29 and an atomizing nozzle 30. The spray main pipe 28 is installed above the air supply inclined pipe 12, the spray branch pipe 29 is installed at the bottom end of the spray main pipe 28 and the bottom end of the spray branch pipe 29 extends into the interior of the air supply inclined pipe 12, and the atomizing nozzle 30 is installed at the bottom end of the spray branch pipe 29.
[0033] The air intake mechanism 2 also includes a dustproof net 5, which is installed at one end inside the air intake 3;
[0034] A motor 17 is installed inside the crossbeam 16, and a lead screw 18 is installed at the output end of the motor 17. One end of the slider 27 extends into the interior of the crossbeam 16 and is threadedly engaged with the lead screw 18.
[0035] Specifically, the motor 17 drives the lead screw 18 to rotate, causing the slider 27 to move the zinc spray gun 19 along the crossbeam 16 to perform zinc spraying on the circuit board.
[0036] The follow-up ventilation mechanism 15 also includes a spring 21 and an arc-shaped clamp 22. The spring 21 is installed on the two inner side walls of the clamp 20, and the arc-shaped clamp 22 is fixed to one end of the spring 21. The arc-shaped clamp 22 is in close contact with the ventilation suction pipe 23.
[0037] Specifically, the follow-up ventilation mechanism 15 is fixed to the side of the zinc spraying gun 19 and moves synchronously with it. The dust suction hood 26 is always suspended above the zinc spraying gun 19 through the telescopic branch pipe 24. The ventilation suction pipe 23 is stably fixed in the clamp seat 20 by the elastic clamping of the spring 21 and the arc-shaped clamp 22. When the dust removal fan 13 is started, the dust extraction main pipe 14 establishes negative pressure through the ventilation suction pipe 23. The zinc powder generated by zinc spraying is captured by the dust suction hood 26 in time to prevent it from spreading to the worker's breathing area. The zinc powder enters the air supply inclined pipe 12 through the telescopic branch pipe 24.
[0038] A valve 25 is installed at the bottom of the ventilation suction pipe 23 above the dust hood 26;
[0039] One end of the spray main pipe 28 extends to the outside of the zinc spraying chamber 101 and is equipped with a water pipe 10;
[0040] A sewage tank 6 is provided on one side of the zinc spraying room 1, and a pressure relief port 7 is installed on one side of the top of the sewage tank 6. A return pipe 8 is installed on the other side of the top of the sewage tank 6, and an exhaust pipe 9 is installed at the top of the return pipe 8.
[0041] Specifically, the main spray pipe 28 is connected to industrial water via water pipe 10, and the water source is diverted into the spray branch pipe 29. Water mist is then generated through atomizing nozzles 30, and the zinc powder is wetted and settled in the water mist. The mud-water mixture slides into the return pipe 8 along the inclined air supply pipe 12 and finally completes sedimentation and separation in the sewage tank 6. The purified air is discharged through the exhaust pipe 9 in compliance with standards. By treating the zinc powder to settle, the harm caused by direct discharge of zinc powder is reduced.
[0042] The dust removal fan 13 is connected to the return pipe 8 through the air supply inclined pipe 12, and the air supply inclined pipe 12 has an inclined structure with the left side lower and the right side higher.
[0043] In this embodiment, the following steps are taken: First, the motor 17 drives the lead screw 18 to rotate, causing the slider 27 to move the zinc spray gun 19 along the crossbeam 16 to perform zinc spraying on the circuit board. During this process, the follow-up ventilation mechanism 15 is fixed to the side of the zinc spray gun 19 and moves synchronously with it. The dust suction hood 26 is always suspended above the zinc spray gun 19 through the telescopic branch pipe 24. The ventilation suction pipe 23 is stably fixed in the clamping seat 20 by the elastic clamping of the spring 21 and the arc-shaped clamp 22. When the dust removal fan 13 is started, the dust extraction main pipe 14 establishes a negative pressure through the ventilation suction pipe 23. The zinc powder generated by zinc spraying is immediately captured by the dust suction hood 26 to prevent it from spreading to the worker's breathing area. The zinc powder is then discharged through the telescopic branch pipe 24. 4. Air enters the inclined air supply pipe 12. The blower 4 draws in external air from the air inlet 3. The dust filter 5 filters the air. The clean air rises vertically to form an air circulation path. The vertical ventilation path of bottom inlet and top outlet is adopted to shorten the ventilation path and improve the ventilation effect. Then, the spray main pipe 28 is connected to industrial water through the water pipe 10. The water source is diverted into the spray branch pipe 29 and then generates water mist through the atomizing nozzle 30. The zinc powder is wetted and settled in the water mist. The mud-water mixture slides into the return pipe 8 along the inclined air supply pipe 12 and finally completes sedimentation and separation in the sewage tank 6. The purified air is discharged through the exhaust pipe 9 in compliance with standards. By treating the zinc powder to settle, the harm caused by the direct discharge of zinc powder is reduced.
[0044] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
Claims
1. A zinc spraying room for circuit board processing with a ventilation mechanism, comprising a zinc spraying room (1), characterized in that: Also includes An air intake mechanism (2) is provided on the outer wall at the bottom of the zinc spraying room (1). The air intake mechanism (2) includes an air inlet (3) and a blower (4). The air inlet (3) is provided in the side wall at the bottom of the zinc spraying room (1), and the blower (4) is installed inside the air inlet (3). A zinc spraying gun (19) is installed in a slider (27) below the top crossbeam (16) of the zinc spraying chamber (1); Follow-up ventilation mechanism (15) is provided on one side of slider (27). Follow-up ventilation mechanism (15) includes clamp (20), ventilation suction pipe (23), telescopic branch pipe (24) and dust suction hood (26). Ventilation suction pipe (23) is provided inside clamp (20) on one side of slider (27). Clamp (20) is fixedly connected to slider (27). Telescopic branch pipe (24) and dust suction hood (26) are respectively installed at the top and bottom of ventilation suction pipe (23). A dust removal fan (13) is installed inside the top chamber (101) of the zinc spraying room at the top of the zinc spraying room (1). The dust removal fan (13) is equipped with a dust extraction main pipe (14) at its input end, and the bottom end of the dust extraction main pipe (14) extends into the interior of the zinc spraying room (1) and is connected to a telescopic branch pipe (24). The dust removal fan (13) is equipped with an air supply inclined pipe (12) at its output end. A spray settling mechanism (11) is installed on the top of the zinc spraying chamber (101) above the air supply inclined pipe (12). The spray settling mechanism (11) includes a spray main pipe (28), a spray branch pipe (29), and an atomizing nozzle (30). The spray main pipe (28) is installed above the air supply inclined pipe (12). The spray branch pipe (29) is installed at the bottom end of the spray main pipe (28), and the bottom end of the spray branch pipe (29) extends into the interior of the air supply inclined pipe (12). The atomizing nozzle (30) is installed at the bottom end of the spray branch pipe (29).
2. The circuit board processing zinc spraying room with a ventilation mechanism according to claim 1, characterized in that: The air intake mechanism (2) also includes a dustproof net (5), which is installed at one end inside the air inlet (3).
3. A zinc spraying booth for circuit board processing with a ventilation mechanism according to claim 1, characterized in that: A motor (17) is installed inside the crossbeam (16), and a lead screw (18) is installed at the output end of the motor (17). One end of the slider (27) extends into the interior of the crossbeam (16) and engages with the lead screw (18) by thread.
4. A zinc spraying booth for circuit board processing with a ventilation mechanism according to claim 1, characterized in that: The follow-up ventilation mechanism (15) also includes a spring (21) and an arc-shaped clamp (22). The spring (21) is installed on the two inner side walls of the clamp (20), and the arc-shaped clamp (22) is fixed to one end of the spring (21). The arc-shaped clamp (22) is in close contact with the ventilation suction pipe (23).
5. A zinc spraying booth for circuit board processing with a ventilation mechanism according to claim 1, characterized in that: A valve (25) is installed at the bottom of the ventilation suction pipe (23) above the dust hood (26).
6. A zinc spraying booth for circuit board processing with a ventilation mechanism according to claim 1, characterized in that: One end of the spray manifold (28) extends to the outside of the zinc spraying chamber top chamber (101) and is fitted with a water pipe (10).
7. A zinc spraying booth for circuit board processing with a ventilation mechanism according to claim 1, characterized in that: A sewage tank (6) is provided on one side of the zinc spraying room (1), and a pressure relief port (7) is installed on one side of the top of the sewage tank (6), and a return pipe (8) is installed on the other side of the top of the sewage tank (6), and an exhaust pipe (9) is installed at the top of the return pipe (8).
8. A zinc spraying booth for circuit board processing with a ventilation mechanism according to claim 7, characterized in that: The dust removal fan (13) is connected to the return pipe (8) through the air supply inclined pipe (12), and the air supply inclined pipe (12) has an inclined structure with the left side lower and the right side higher.