An air purification device for a spray painting booth

Abstract

The present invention discloses an air purification device for a spray painting booth, which includes a spray painting booth body. An intake dust filtering mechanism and an outlet paint mist filtering mechanism are installed on the spray painting booth body. The outlet paint mist filtering mechanism includes an exhaust fan, an ultrasonic atomizer, and a purification box. The exhaust fan is installed inside the spray painting booth body. The air outlet of the exhaust fan is connected to the air inlet of a Venturi tube through a first exhaust pipe. The air outlet of the Venturi tube is connected to a second exhaust pipe. The second exhaust pipe penetrates through the purification box. A motor is installed on the side of the purification box. The output shaft of the motor penetrates through the purification box and is fixed with a rotating cylinder. Installation holes arranged in a circumferential array are formed on the side of the rotating cylinder. The present invention can perform multi-stage absorption on paint mist, with good absorption effect and convenient operation.

Description

Technical Field

[0001] The present invention relates to the technical field of spray booths, and in particular to an air purification device for a spray booth. Background Art

[0002] A spray booth, as the name implies, is a room where the object to be painted is spray-painted and colored. It is also called a baking booth. A spray booth is a device that provides a dedicated environment for painting operations, and can meet the requirements for temperature, humidity, illuminance, air cleanliness, etc. during painting operations; it can limit and treat the paint mist and organic waste gas generated during the painting operation and then discharge them, and it is an environmentally friendly painting device.

[0003] Currently, for paint mist purification, the waste gas is often directly discharged outside the booth after being filtered by high-temperature cotton at the top or bottom, without effective treatment. Therefore, the discharged gas still has a strong odor and still has a great impact on the environment. In addition, the cost of high-temperature cotton filtration is high and it is not economical to use. Therefore, we propose an air purification device for a spray booth. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose an air purification device for a spray booth.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An air purification device for a spray booth, including a spray booth body, an intake air dust filtering mechanism and an exhaust air paint mist filtering mechanism are installed on the spray booth body. The exhaust air paint mist filtering mechanism includes an exhaust fan, an ultrasonic atomizer, and a purification box. The exhaust fan is installed inside the spray booth body. The air outlet of the exhaust fan is connected to the air inlet of a Venturi tube through a first exhaust pipe. The air outlet of the Venturi tube is connected to a second exhaust pipe. The second exhaust pipe penetrates through the purification box. A motor is installed on the side of the purification box. The output shaft of the motor penetrates through the purification box and is fixed with a rotating cylinder. A plurality of mounting holes arranged in a circumferential array are formed on the side of the rotating cylinder. A wire mesh plate is fixed in the mounting hole. The rotating cylinder is rotatably sleeved on the second exhaust pipe and is communicated with the second exhaust pipe. The atomizing outlet of the ultrasonic atomizer is communicated with a cylindrical shell through a first exhaust pipe. The cylindrical shell is fixedly sleeved on the Venturi tube and is communicated with the injection port of the Venturi tube. An exhaust port filtering mechanism is installed on the purification box. An inlet water mechanism for supplying water to the ultrasonic atomizer and the purification box is installed on the purification box.

[0007] Preferably, the intake air dust filtering mechanism includes an intake port and a dust filter. The intake port is arranged on the side of the spray booth body, and the dust filter is clamped inside the intake port.

[0008] Preferably, a first pressing piece is fixed to the air inlet port by a first screw, and a first spring for pressing the first pressing piece is sleeved on the first screw.

[0009] Preferably, the purification box is fixed to the spray painting booth body through a mounting plate, and the ultrasonic atomizer is installed on the top of the purification box.

[0010] Preferably, a liquid level sensor is installed on the inner wall of the purification box.

[0011] Preferably, a drain pipe is connected to the side of the purification box, and a shut-off valve is installed on the pipe section of the drain pipe.

[0012] Preferably, the exhaust port filtering mechanism includes an exhaust port and an activated carbon mesh. The exhaust port is opened on the side of the purification box, and the activated carbon mesh is clamped in the exhaust port.

[0013] Preferably, a second pressing piece is fixed to the exhaust port by a second screw, and a second spring for pressing the second pressing piece is sleeved on the second screw.

[0014] Preferably, the water inlet mechanism includes a first water inlet pipe, a first solenoid valve, a second water inlet pipe, a second solenoid valve, and a main water inlet pipe. The main water inlet pipe is respectively connected to the first water inlet pipe and the second water inlet pipe. A first solenoid valve is installed on the pipe section of the first water inlet pipe, and a second solenoid valve is installed on the pipe section of the second water inlet pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. In the present invention, the dust filter can be fixed by the first screw, the first pressing piece, and the first spring. The dust filter can purify the dust in the air and is used to purify the gas entering the interior of the spray painting booth body to prevent the dust in the air from affecting the spraying quality. The outlet paint mist filtering mechanism is used to purify the paint mist to prevent the paint mist from being directly discharged outdoors and affecting the environment. The exhaust fan is used to extract the paint mist inside the spray painting booth body, and the ultrasonic atomizer is used to generate and create water mist.

[0017] 2. In the present invention, there is water at the bottom inside the purification box, which can make half of the rotating cylinder immersed in the water. When the motor drives the rotating cylinder to rotate, the wire mesh plate can be cyclically immersed in the water, so that the pores on the wire mesh plate can be filled with water. The paint mist enters the Venturi tube through the first exhaust pipe, and then the water mist is inhaled into the Venturi tube and mixed with the water mist. After mixing, it is discharged into the rotating cylinder through the second exhaust pipe. At this time, the condensed paint mist is dissolved in the water, and the unabsorbed paint mist is absorbed by the water on the wire mesh plate again, realizing two-stage absorption.

[0018] 3. In the present invention, the activated carbon net can be fixed by the second screw, the second pressing piece and the second spring. The activated carbon net can filter and absorb the paint mist, and is used for filtering the discharged gas again. When the first electromagnetic valve is opened, water can be supplied to the ultrasonic atomizer. When the second electromagnetic valve is opened, water can be supplied to the purification tank to meet the requirements. The aqueous solution absorbing the paint mist can be discharged through the drain pipe. The liquid level sensor is used to judge the liquid level of the internal water to ensure meeting the water demand. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of an air purification device for a spray painting booth proposed by the present invention;

[0020] Figure 2 is a schematic structural diagram of an intake air dust filtering mechanism of an air purification device for a spray painting booth proposed by the present invention;

[0021] Figure 3 is a schematic structural diagram of an exhaust air paint mist filtering mechanism of an air purification device for a spray painting booth proposed by the present invention;

[0022] Figure 4 is a schematic structural diagram of a Venturi tube of an air purification device for a spray painting booth proposed by the present invention;

[0023] Figure 5 is a schematic structural diagram of an exhaust port filtering mechanism of an air purification device for a spray painting booth proposed by the present invention;

[0024] Figure 6 is a schematic structural diagram of a water inlet mechanism of an air purification device for a spray painting booth proposed by the present invention.

[0025] In the figure: 1 spray painting booth body, 2 intake air dust filtering mechanism, 21 intake port, 22 dust filter, 23 first screw, 24 first spring, 25 first pressing piece, 3 exhaust air paint mist filtering mechanism, 301 air extraction fan, 302 first exhaust pipe, 303 Venturi tube, 304 cylindrical shell, 305 first exhaust pipe, 306 ultrasonic atomizer, 307 mounting plate, 308 second exhaust pipe, 309 purification tank, 310 wire mesh plate, 311 rotating cylinder, 312 shut-off valve, 313 drain pipe, 314 liquid level sensor, 315 motor, 316 exhaust port filtering mechanism, 3161 exhaust port, 3162 activated carbon net, 3163 second pressing piece, 3164 second screw, 3165 second spring, 317 water inlet mechanism, 3171 first water inlet pipe, 3172 first electromagnetic valve, 3173 second water inlet pipe, 3174 second electromagnetic valve, 3175 main water inlet pipe. Detailed Embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0027] Referring to Figure 1 , Figure 2 , Figure 3 , an air purification device for a spray painting booth, including a spray painting booth body 1, an intake air dust filtering mechanism 2 and an exhaust air paint mist filtering mechanism 3 are installed on the spray painting booth body 1. The intake air dust filtering mechanism 2 is used to purify the gas entering the interior of the spray painting booth body 1 to avoid the influence of dust in the air on the spraying quality. The exhaust air paint mist filtering mechanism 3 is used to purify the paint mist to avoid the paint mist being directly discharged outdoors and affecting the environment. The exhaust air paint mist filtering mechanism 3 includes an exhaust fan 301, an ultrasonic atomizer 306, and a purification box 309. The exhaust fan 301 is used to extract the paint mist inside the spray painting booth body 1. The ultrasonic atomizer 306 is used to generate and create water mist. The exhaust fan 301 is installed inside the spray painting booth body 1. The air outlet of the exhaust fan 301 is connected to the intake port of a Venturi tube 303 through a first exhaust pipe 302. The outlet of the Venturi tube 303 is connected to a second exhaust pipe 308. The second exhaust pipe 308 penetrates through the purification box 309. A motor 315 is installed on the side of the purification box 309. The output shaft of the motor 315 penetrates through the purification box 309 and is fixed with a rotating cylinder 311. A mounting hole arranged in a circumferential array is opened on the side of the rotating cylinder 311. A wire mesh plate 310 is fixed in the mounting hole. The rotating cylinder 311 is rotatably sleeved on the second exhaust pipe 308 and is communicated with the second exhaust pipe 308. The atomization outlet of the ultrasonic atomizer 306 is communicated with a cylindrical shell 304 through a first exhaust pipe 305. The cylindrical shell 304 is fixedly sleeved on the Venturi tube 303 and is communicated with the injection port of the Venturi tube 303. There is water at the bottom inside the purification box 309, so that half of the rotating cylinder 311 can be immersed in the water. When the motor 315 drives the rotating cylinder 311 to rotate, the wire mesh plate 310 can be cyclically immersed in the water, so that the pores on the wire mesh plate 310 can be filled with water. The paint mist enters the Venturi tube 303 through the first exhaust pipe 302, and then the water mist is inhaled into the Venturi tube 303 and mixed with the water mist. After mixing, it is discharged into the rotating cylinder 311 through the second exhaust pipe 308. At this time, the condensed paint mist is dissolved in the water, and the unabsorbed paint mist is absorbed by the water on the wire mesh plate 310 again, realizing two-stage absorption. An exhaust port filtering mechanism 316 is installed on the purification box 309. The exhaust port filtering mechanism 316 is used to filter the discharged gas once again. An intake water mechanism 317 for replenishing water to the ultrasonic atomizer 306 and the purification box 309 is installed on the purification box 309. The intake water mechanism 317 is used to replenish water to the ultrasonic atomizer 306 and the purification box 309 to meet the requirements.

[0028] Referring to Figure 2, the intake air dust filtering mechanism 2 includes an intake port 21 and a dust filter 22. The intake port 21 is provided on the side of the paint spraying booth body 1, and the dust filter 22 is snap-fitted inside the intake port 21. The dust filter 22 can purify the dust in the air. A first pressing piece 25 is fixed to the intake port 21 by a first screw 23, and a first spring 24 for pressing the first pressing piece 25 is sleeved on the first screw 23. The dust filter 22 can be fixed by the first screw 23, the first pressing piece 25, and the first spring 24.

[0029] Refer to Figure 3 , the purification tank 309 is fixed to the paint spraying booth body 1 through a mounting plate 307. The ultrasonic atomizer 306 is installed on the top of the purification tank 309. A liquid level sensor 314 is installed on the inner wall of the purification tank 309. A drain pipe 313 is connected to the side of the purification tank 309, and a shut-off valve 312 is installed on the pipe section of the drain pipe 313. The aqueous solution for absorbing paint mist can be discharged through the drain pipe 313. The liquid level sensor 314 is used to judge the liquid level of the internal water to ensure that the water demand is met.

[0030] Refer to Figure 5 , the exhaust port filtering mechanism 316 includes an exhaust port 3161 and an activated carbon mesh 3162. An exhaust port 3161 is opened on the side of the purification tank 309, and the activated carbon mesh 3162 is snap-fitted inside the exhaust port 3161. The activated carbon mesh 3162 can filter and absorb the paint mist. A second pressing piece 3163 is fixed to the exhaust port 3161 by a second screw 3164, and a second spring 3165 for pressing the second pressing piece 3163 is sleeved on the second screw 3164. The activated carbon mesh 3162 can be fixed by the second screw 3164, the second pressing piece 3163, and the second spring 3165.

[0031] Refer to Figure 6 , the water inlet mechanism 317 includes a first water inlet pipe 3171, a first solenoid valve 3172, a second water inlet pipe 3173, a second solenoid valve 3174, and a main water inlet pipe 3175. The main water inlet pipe 3175 is respectively connected to the first water inlet pipe 3171 and the second water inlet pipe 3173. A first solenoid valve 3172 is installed on the pipe section of the first water inlet pipe 3171, and a second solenoid valve 3174 is installed on the pipe section of the second water inlet pipe 3173. When the first solenoid valve 3172 is opened, water can be supplied to the ultrasonic atomizer 306. When the second solenoid valve 3174 is opened, water can be supplied to the purification tank 309.

[0032] Working principle: When in use, the dust filter 22 can be fixed by the first screw 23, the first pressing piece 25, and the first spring 24. The dust filter 22 can purify the dust in the air and is used to purify the gas entering the interior of the spray booth body 1 to prevent the dust in the air from affecting the spraying quality. The air outlet paint mist filtering mechanism 3 is used to purify the paint mist to prevent the paint mist from being directly discharged outdoors and affecting the environment. The air extraction fan 301 is used to extract the paint mist inside the spray booth body 1. The ultrasonic atomizer 306 is used to generate and create water mist. There is water at the inner bottom of the purification tank 309, which allows half of the rotating cylinder 311 to be immersed in the water. When the motor 315 drives the rotating cylinder 311 to rotate, the wire mesh plate 310 can be cyclically immersed in the water, so that the pores on the wire mesh plate 310 can be filled with water. The paint mist enters the Venturi tube 303 through the first exhaust pipe 302, and then the water mist is inhaled into the Venturi tube 303 and mixed with the water mist. After mixing, it is discharged into the rotating cylinder 311 through the second exhaust pipe 308. At this time, the condensed paint mist is dissolved in the water, and the unabsorbed paint mist is absorbed again by the water on the wire mesh plate 310, achieving two-stage absorption. The activated carbon mesh 3162 can be fixed by the second screw 3164, the second pressing piece 3163, and the second spring 3165. The activated carbon mesh 3162 can filter and absorb the paint mist and is used to filter the discharged gas once again. When the first solenoid valve 3172 is opened, it can supply water to the ultrasonic atomizer 306. When the second solenoid valve 3174 is opened, it can supply water to the purification tank 309 to meet the requirements. The aqueous solution absorbing the paint mist can be discharged through the drain pipe 313. The liquid level sensor 314 is used to judge the liquid level of the internal water to ensure that the water demand is met.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An air purification device for a spray painting booth, comprising a spray painting booth body (1), characterized in that, An air intake dust filtering mechanism (2) and an exhaust paint mist filtering mechanism (3) are installed on the paint spraying booth body (1). The exhaust paint mist filtering mechanism (3) includes an exhaust fan (301), an ultrasonic atomizer (306), and a purification box (309). The exhaust fan (301) is installed inside the paint spraying booth body (1). The air outlet of the exhaust fan (301) is connected to the air inlet of a Venturi tube (303) through a first exhaust pipe (302). The air outlet of the Venturi tube (303) is connected to a second exhaust pipe (308). The second exhaust pipe (308) penetrates through the purification box (309). A motor (315) is installed on the side of the purification box (309). The output shaft of the motor (315) penetrates through the purification box (309) and is fixed with a rotating cylinder (311). A plurality of mounting holes arranged in a circumferential array are formed on the side of the rotating cylinder (311). A wire mesh plate (310) is fixed in the mounting holes. The rotating cylinder (311) is rotatably sleeved on the second exhaust pipe (308) and is communicated with the second exhaust pipe (308). The atomizing outlet of the ultrasonic atomizer (306) is communicated with a cylindrical shell (304) through a first exhaust pipe (305). The cylindrical shell (304) is fixedly sleeved on the Venturi tube (303) and is communicated with the injection port of the Venturi tube (303). An exhaust port filtering mechanism (316) is installed on the purification box (309). An inlet water mechanism (317) for supplying water to the ultrasonic atomizer (306) and the purification box (309) is installed on the purification box (309). The air intake dust filtering mechanism (2) includes an air intake port (21) and a dust filter (22). The air intake port (21) is arranged on the side of the paint spraying booth body (1). The dust filter (22) is clamped inside the air intake port (21). A first pressing piece (25) is fixed on the air intake port (21) through a first screw (23). A first spring (24) for pressing the first pressing piece (25) is sleeved on the first screw (23). The exhaust port filtering mechanism (316) includes an exhaust port (3161) and an activated carbon mesh (3162). The exhaust port (3161) is formed on the side of the purification box (309). The activated carbon mesh (3162) is clamped inside the exhaust port (3161). A second pressing piece (3163) is fixed on the exhaust port (3161) through a second screw (3164). A second spring (3165) for pressing the second pressing piece (3163) is sleeved on the second screw (3164).

2. The air purification device for a spray painting booth according to claim 1, characterized in that, The purification box (309) is fixed on the paint spraying booth body (1) through a mounting plate (307). The ultrasonic atomizer (306) is installed on the top of the purification box (309).

3. The air purification device for a spray painting booth according to claim 1, characterized in that, A liquid level sensor (314) is installed on the inner wall of the purification box (309).

4. The air purification device for a spray painting booth according to claim 1, characterized in that, A drain pipe (313) is communicated with the side of the purification box (309). A shut-off valve (312) is installed on the pipe section of the drain pipe (313).

5. The air purification device for a spray painting booth according to claim 1, characterized in that, The water inlet mechanism (317) includes a first water inlet pipe (3171), a first solenoid valve (3172), a second water inlet pipe (3173), a second solenoid valve (3174), and a main water inlet pipe (3175). The main water inlet pipe (3175) is respectively connected to the first water inlet pipe (3171) and the second water inlet pipe (3173). A first solenoid valve (3172) is installed on the pipe section of the first water inlet pipe (3171), and a second solenoid valve (3174) is installed on the pipe section of the second water inlet pipe (3173).

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