A car roof spray device

Abstract

A car roof spraying device includes a spray box with an inlet at the bottom of the rear side wall and an outlet at the bottom of the front side wall. Inside the spray box are nozzles extending upwards and forwards, and above the nozzles are deflectors extending downwards and forwards. The front end of the deflector extends beyond the outlet, and a U-shaped water collection trough is located below the front end of the deflector at the outlet. The device also includes a front and rear transverse conveying mechanism that passes through the spray box via the inlet and outlet. The conveying mechanism feeds the car roof into the spray box through the inlet. The nozzles spray water mist towards the bottom wall of the deflector, which blocks the mist, causing it to fall onto the car roof. The U-shaped water collection trough has a hollow interlayer, and a jet slit connecting the hollow interlayer is located at the lowest point of the outer bottom wall of the U-shaped water collection trough. An air inlet leading to the hollow interlayer is located on the front side wall of the U-shaped water collection trough, and an air blowing device is located on the front side of the U-shaped water collection trough, connected to the air inlet for blowing air.

Description

Technical Field

[0001] This invention relates to the field of automobile roof manufacturing, and in particular to a spraying device for spraying water mist onto automobile roofs during the manufacturing process. Background Technology

[0002] The manufacturing process of car roofs requires spraying them with water mist, for which methods such as... Figure 1 The spraying device shown includes a spray box 3 and a belt conveyor 1. The spray box 3 has an inlet 20 on its rear side wall and an outlet 21 on its front side wall. The belt conveyor 1 passes through the spray box 3 via the inlet 20 and outlet 21. A nozzle 4 extending upwards and forwards is located on the inner rear side wall of the spray box 3. Above the nozzle 4 is a deflector 5 extending downwards and forwards, with its front end extending beyond the outlet 21. A thin-walled water collection trough 6 is located directly below the front end of the deflector 5 at the outlet 21 of the spray box 3. A car roof 2 is placed on the rear of the belt conveyor 1 and fed into the spray box 3, stopping directly below the bottom wall of the deflector 5. The nozzle 4 sprays water mist, most of which is blocked by the bottom wall of the deflector 5 and condenses into water droplets. These droplets fall onto the car roof 2, completing the water mist spraying. The car roof 2 is then conveyed out of the spray box 3 by the belt conveyor 1, completing the discharge. Of the water mist sprayed from nozzle 4, a small portion is excess. This excess water mist mainly flows along the bottom wall of the deflector plate 5 to the front end of the deflector plate 5 and drips into the thin-walled water collection tank 6 for collection. However, some excess water mist will still overflow from the outlet 21 of the spray box 3, located between the front end of the deflector plate 5 and the top wall of the conveyor belt 1. During the overflow process, it is blocked by the outer rear wall of the thin-walled water collection tank 6 and condenses into water droplets. The water droplets flow along the arc-shaped outer wall of the thin-walled water collection tank 6 to the lowest point of the outer wall and then drip onto the ground, causing pollution. Summary of the Invention

[0003] The present invention aims to provide a car roof spray device that can prevent water mist from accumulating into water droplets at the lowest point of the water collection tank and dripping onto the ground.

[0004] A car roof spraying device includes a spray box with an inlet at the bottom of the rear side wall and an outlet at the bottom of the front side wall. Inside the spray box are nozzles extending upwards and forwards at an angle. Above the nozzles are fog deflectors extending downwards and forwards at an angle. The front end of the fog deflector extends beyond the outlet. A U-shaped water collection trough is located below the front end of the fog deflector at the outlet. The device also includes a front and rear transverse conveying mechanism that passes through the spray box via the inlet and outlet and is located below both the nozzles and the U-shaped water collection trough. The front and rear transverse conveying mechanism feeds the car roof into the spray box through the inlet. The nozzles spray water mist towards the bottom wall of the fog deflector, and most of the water mist is blocked by the bottom wall of the fog deflector and flows downwards. The water mist sprays onto the car roof. Some of the mist flows along the bottom wall of the fog deflector to the front of the deflector and drips into the U-shaped water collection trough for collection. Others overflow towards the outlet to the rear wall of the U-shaped water collection trough and then converge along its arc-shaped outer bottom wall to the lowest point of the bottom wall. The U-shaped water collection trough has a hollow interlayer, and an air jet slit connecting the hollow interlayer is opened at the lowest point of the outer bottom wall of the U-shaped water collection trough. An air inlet leading to the hollow interlayer is opened on the outer front wall of the U-shaped water collection trough, and an air blowing device is located on the front side of the U-shaped water collection trough. The air blowing device is connected to the air inlet to blow air. This air passes through the hollow interlayer to reach the air jet slit and is sprayed downwards, thus dispersing the water mist that converges at the lowest point of the outer bottom wall of the U-shaped water collection trough.

[0005] Furthermore, the front and rear transverse conveying mechanism specifically includes multiple chain belts, which are arranged side by side in the left and right directions, with gaps between adjacent chain belts for the gas ejected from the jet slits to pass through.

[0006] Furthermore, the jet slits are horizontal, running left and right.

[0007] Furthermore, the left and right ends of the jet slit are located on the left and right outer walls of the U-shaped water collection trough, respectively.

[0008] Furthermore, a door is provided on the right side wall of the spray box.

[0009] Furthermore, a fan is installed above and behind the entrance, blowing air towards the entrance below and forward to prevent water mist from overflowing.

[0010] The beneficial effect is that the water mist overflows from the outlet to the rear wall of the U-shaped water collection tank, and then flows along the arc-shaped outer wall of the U-shaped water collection tank to the lowest point of the outer bottom wall of the U-shaped water collection tank. Before it condenses into water droplets, it will be blown into the air by the air ejected from the jet slit, preventing the water mist from gathering into water droplets at the lowest point of the bottom wall of the U-shaped water collection tank. Attached Figure Description

[0011] Figure 1 This is a longitudinal section view of an existing spraying device;

[0012] Figure 2 This is a front view of the spray device of the present invention;

[0013] Figure 3This is a top view of the spray device of the present invention;

[0014] Figure 4 yes Figure 2 Longitudinal section view at point A;

[0015] In the diagram: 1. Belt conveyor; 2. Car roof; 3. Spray box; 4. Nozzle; 5. Fog deflector; 6. Thin-walled water collection tank; 7. Thick-walled water collection tank; 8. Air blowing pipe; 9. Air blower; 11. Chain conveyor; 13. Opening; 14. Chain belt; 20. Inlet; 21. Outlet; 30. Hollow interlayer; 31. Air jet slit; 33. Air curtain. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to specific embodiments.

[0017] like Figure 2 As shown, the spraying device includes a spray box 3, with an inlet 20 at the bottom of the rear side wall and an outlet 21 at the bottom of the front side wall. The spray box 3 contains a nozzle 4 that extends forward and upward at an angle (see reference). Figure 1 The nozzle 4 is provided with a fog baffle 5 that extends downwards and forwards. The front end of the fog baffle 5 extends out of the outlet 21. A U-shaped thick-walled water collection tank 7 is provided at the part of the outlet 21 located below the front end of the fog baffle 5.

[0018] The spraying device includes a front and rear transverse chain conveyor 11, which serves as a front and rear transverse conveying mechanism. It passes through the spray box 3 through the inlet 20 and outlet 21 and is located below both the nozzle 4 and the thick-walled water collection tank 7. The operator places the car roof 2 on the rear end of the top wall of the chain conveyor 11. The chain conveyor 11 sends the car roof 2 into the spray box 3 and stops. The nozzle 4 sprays water mist forward and upward. Most of the water mist is blocked by the deflector 5 and falls onto the car roof 2, thus completing the water mist spraying. Then, the chain conveyor 11 sends the car roof 2 out of the spray box 3 through the outlet 21 to complete the discharge. Of the water mist sprayed from nozzle 4, a small portion is excess. This excess water mist mainly flows along the bottom wall of the deflector plate 5 to the front end of the deflector plate 5 and drips into the thick-walled water collection tank 7 for collection. However, some excess water mist still overflows from the outlet 21 of the spray box 3, located between the front end of the deflector plate 5 and the top wall of the chain conveyor 11. During the overflow process, it is blocked by the outer rear wall of the thick-walled water collection tank 7, condenses into water droplets, and flows downwards. Figure 4As shown, the thick-walled water collection tank 7 has a hollow interlayer 30 inside its thick wall. A jet slit 31, connecting the hollow interlayer 30, is opened at the lowest point of the outer bottom wall of the thick-walled water collection tank 7. An air inlet, also connecting the hollow interlayer 30, is opened on the front side wall of the thick-walled water collection tank 7. An air blowing pipe 8 and an air blower 9 are located at the air inlet. The front end of the air blowing pipe 8 is connected to the air blower 9, and the rear end is connected to the air inlet. The air blower 9 and the air blowing pipe 8 together serve as an air blowing device, blowing air into the hollow interlayer 30 through the air inlet. The air is then ejected downwards through the jet slit 31 to the outside of the thick-walled water collection tank 7, dispersing the water mist that has accumulated at the lowest point of the outer bottom wall of the thick-walled water collection tank 7. An air curtain 33 is then formed between the lowest point of the outer bottom wall of the thick-walled water collection tank 7 and the top wall of the chain conveyor 11, preventing the dispersed water mist from overflowing further. The jet slit 31 is horizontal, with its left and right ends located on the left and right outer walls of the thick-walled water collection tank 7, respectively.

[0019] like Figure 3 As shown, the front and rear transverse conveying mechanism includes multiple chain belts 14, which are arranged side by side in the left and right directions. There is a gap 13 between two adjacent chain belts 14 for the gas ejected from the jet slit 31 to pass through.

[0020] Preferably, a fan (not shown in the figure) is provided above and behind the inlet 20, and the fan blows air towards the inlet 20 to prevent water mist from overflowing. A door is provided on the right side wall of the spray box 3 for maintenance.

[0021] The above description is merely an embodiment of the present invention and does not limit the scope of patent protection. Any non-substantial changes or substitutions made by those skilled in the art based on the present invention will still fall within the scope of patent protection.

Claims

1. A car roof spraying device, comprising a spray box, an inlet at the bottom of the rear side wall of the spray box, an outlet at the bottom of the front side wall, a nozzle extending obliquely upwards and forwards inside the spray box, a fog deflector extending obliquely downwards and forwards above the nozzle, the front end of the fog deflector extending beyond the outlet, and a U-shaped water collection trough located below the front end of the fog deflector at the outlet; comprising a front and rear transverse conveying mechanism, which passes through the spray box via the inlet and outlet and is located below both the nozzle and the U-shaped water collection trough, the front and rear transverse conveying mechanism feeding the car roof into the spray box through the spray box inlet, the nozzle spraying water mist towards the bottom wall of the fog deflector, most of the water mist being blocked by the bottom wall of the fog deflector and falling onto the car roof to complete the water mist spraying, a small portion of the water mist flowing along the bottom wall of the fog deflector to the front end of the fog deflector and dripping into the U-shaped water collection trough for collection, and some overflowing towards the outlet to the rear side wall of the U-shaped water collection trough and then converging along its arc-shaped outer bottom wall to the lowest point of the bottom wall, characterized in that: The U-shaped water collection tank has a hollow interlayer. A jet slit connecting the hollow interlayer is opened at the lowest point of the outer bottom wall of the U-shaped water collection tank. An air inlet leading to the hollow interlayer is opened on the outer front side wall of the U-shaped water collection tank. An air blowing device is provided on the front side of the U-shaped water collection tank. The air blowing device is connected to the air inlet to blow air. This air passes through the hollow interlayer and reaches the jet slit, and is sprayed downward to disperse the water mist that flows at the lowest point of the outer bottom wall of the U-shaped water collection tank.

2. The spraying device as described in claim 1, characterized in that: The front and rear transverse conveying mechanism specifically includes multiple chain belts, which are arranged side by side in the left and right directions, with gaps between adjacent chain belts for the gas ejected from the jet slits to pass through.

3. The spraying device as described in claim 1, characterized in that: The air jet slits are horizontal, running left and right.

4. The spraying device as described in claim 3, characterized in that: The left and right ends of the jet slit are located on the left and right outer walls of the U-shaped water collection tank, respectively.

5. The spraying device as described in claim 1, characterized in that: A door is located on the right side wall of the spray box.

6. The spraying device as described in claim 1, characterized in that: A fan is installed above the entrance, blowing air towards the entrance below to prevent water mist from overflowing.

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