Paint spraying organic waste gas purification device

Abstract

The utility model relates to a paint spraying organic waste gas purification device which comprises a purification box, the side wall of the purification box is communicated with a gas inlet pipe, an axial flow fan is embedded in the gas inlet pipe, a water layer, a spraying pipe, a dehumidification room and an adsorption layer are sequentially arranged in the purification box from bottom to top, and the tail end of the gas inlet pipe is inserted into the water layer. A plurality of atomizing nozzles are arranged at the bottom of the spraying pipe, one end of the spraying pipe penetrates through the side wall of the purifying box and is communicated with the water layer, a circulating water pump and a water purifier are arranged on the spraying pipe located on the outer side of the purifying box, and a gravity opening and closing device is further arranged in the purifying box and located between the spraying pipe and the water layer. A high-temperature chamber is arranged at the top of the purification box, the purification box is communicated with the high-temperature chamber through a pipeline, a plurality of layers of electric heating wires are wound and fixed on the inner side of the high-temperature chamber, a heater is mounted outside the high-temperature chamber, and an air outlet is further formed in the top of the high-temperature chamber; the waste gas can be prevented from being gathered to influence the body health of people, and meanwhile, the pollution to the surrounding environment is avoided.

Description

Technical Field

[0001] The utility model relates to a paint spraying organic waste gas purification device, belonging to the technical field of paint spraying processing. Background Art

[0002] With the development of science and technology and industrial technology, spray painting has been widely used as a way to protect and beautify the surface of equipment. Spray painting is a method of applying paint to the surface of the object by dispersing the paint into uniform and fine droplets with the help of air pressure through a spray gun.

[0003] Waste gas is generated during the painting process. The existing treatment method for waste gas generated by paint spraying is mostly through a washing tower. However, some of the waste gas generated by the existing paint during the spraying process will escape into the operating room. The existing smoke is mostly discharged through ventilation, and the waste gas is usually discharged along with the air, which causes the air to drift to the outside and pollute the surrounding environment. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the utility model provides a paint spraying organic waste gas purification device, which can avoid waste gas aggregation, affect human health, and avoid pollution to the surrounding environment.

[0005] The technical solution of the utility model is as follows:

[0006] A paint spraying organic waste gas purification device comprises a purification box, the side wall of the purification box is connected to an air inlet pipe, an axial flow fan is embedded in the air inlet pipe, a water layer, a spray pipe, a dehumidification room and an adsorption layer are arranged in sequence from bottom to top in the purification box, the dehumidification room is used to remove the lower layer of water mist, the end of the air inlet pipe is inserted into the water layer, a plurality of atomizing nozzles are arranged at the bottom of the spray pipe, one end of the spray pipe passes through the side wall of the purification box and is connected to the water layer, a circulating water pump and a water purifier are arranged on the spray pipe located outside the purification box, and a gravity opening and closing device is also arranged between the spray pipe and the water layer in the purification box; a high temperature chamber is arranged on the top of the purification box, the purification box and the high temperature chamber are connected by a pipeline, multiple layers of electric heating wires are wound and fixed inside the high temperature chamber, a heater is installed outside the high temperature chamber, and an air outlet is also arranged on the top of the high temperature chamber.

[0007] In which, the gravity opening and closing device includes two opening and closing plates, the two opening and closing plates are respectively hinged to the two sides of the inner wall of the purification box, and the other sides of the two opening and closing plates are pressed against each other in a horizontal state; fixed plates are also fixedly arranged on both sides of the inner wall of the purification box, and a slide groove is arranged on the fixed plate, and a first spring is arranged on the side away from the center of the purification box inside the two slide grooves, and the other ends of the two first springs are fixedly connected to a moving rod, and the moving rod is slidably passed through the inside of the slide groove, and the top of the moving rods on both sides are fixedly arranged on the bottom of the opening and closing plate, and a second spring is sleeved on the moving rod, one end of the second spring presses against the lower bottom wall of the opening and closing plate, and the other end of the second spring presses against the upper surface of the fixed plate; the two opening and closing plates separate the purification box.

[0008] Wherein, a groove is arranged on one end of the two opening and closing plates which are tightly pressed against each other, and a magnet is fixedly arranged in the groove.

[0009] Wherein, the upper surfaces of the two opening and closing plates are both arranged to be inclined downward toward the center of the purification box.

[0010] Among them, support columns are arranged at both ends of the bottom of the purification box, a motor box is fixedly arranged on the outer side of the bottom of the purification box, a rotating motor is arranged inside the motor box, and a stirring rod is fixedly connected to the output end of the rotating motor. The stirring rod passes through the bottom of the purification box and is inserted into the water layer.

[0011] Wherein, the adsorption layer is honeycomb activated carbon.

[0012] The dehumidification room is arranged between the spray pipe and the adsorption layer, and is provided with an air vent and an air inlet. The air vent and the air inlet are filled with absorbent cotton. Several dehumidifiers are also arranged inside the dehumidification room.

[0013] The utility model has the following beneficial effects:

[0014] This device is provided with a gravity opening and closing device so that the exhaust gas can fully react with the water layer in the purification box, and can adsorb most of the exhaust gas that can be dissolved in water during the reaction with the water layer. In conventional practices, the contact time between the exhaust gas and the water layer is too short, and most of the exhaust gas that can be dissolved in water cannot be effectively adsorbed. After leaving enough reaction time, the pressure brought by the accumulated water to the two opening and closing plates 13 forces the two opening and closing plates 13 to open, so that the remaining exhaust gas can pass through and continue to complete the purification process, which can effectively and thoroughly purify the harmful gases in the exhaust gas and avoid affecting human health and damaging the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 For this utility model Figure 1A partial enlarged view of the midpoint A;

[0017] Figure 3 It is a top view of the fixing plate of the utility model.

[0018] The reference numerals in the figure are as follows:

[0019] 1. Purification box; 2. Air inlet pipe; 3. Axial flow fan; 4. Water layer; 5. Spray pipe; 6. Adsorption layer; 7. Atomizing nozzle; 8. Circulating water pump; 9. Water purifier; 10. High temperature chamber; 11. Heating wire; 12. Heater; 13. Opening and closing plate; 14. Fixed plate; 15. Slide; 16. First spring; 17. Moving rod; 18. Second spring; 19. Magnet; 20. Support column; 21. Rotating motor; 22. Stirring rod; 23. Dehumidification room; 24. Absorbent cotton; 25. Dehumidifier. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] See also Figures 1 to 3 , the utility model provides a technical solution:

[0022] A paint spraying organic waste gas purification device comprises a purification box 1, the side wall of the purification box 1 is connected with an air intake pipe 2, an axial flow fan 3 is embedded in the air intake pipe 2, the other end of the air intake pipe 2 is arranged in the paint spraying operation room, and the exhaust gas in the operation room is sucked into the air intake pipe 2 through the action of the axial flow fan 3, and then enters the purification box 1; the purification box 1 is provided with a water layer 4, a spray pipe 5, a dehumidification room 23 and an adsorption layer 6 from bottom to top, the adsorption layer 6 is honeycomb activated carbon, and a gravity opening and closing device is also provided between the water layer 4 and the spray pipe 5, the end of the air intake pipe 2 is inserted into the water layer 4, and the water layer 4 can be made into an alkaline environment by adding NaOH. Since the exhaust gas mainly contains harmful substances such as benzene, ketones and aldehydes, some of which can react with water or under alkaline conditions, this is used as the first step to absorb and purify the exhaust gas, and part of the exhaust gas is taken away through the water layer 4. At the same time, the spray pipe 5 is a mesh as a whole, covering the top of the gravity opening and closing device. A plurality of atomizing nozzles 7 are arranged at the bottom of the spray pipe 5. One end of the spray pipe 5 passes through the side wall of the purification box 1 and is connected to the water layer 4. A circulating water pump 8 and a water purifier 9 are arranged on the spray pipe 5 outside the purification box 1. Through the circulating water pump 8 pumps water into the spray pipe 5, and at the same time removes the polluted water through the water purifier 9, and then sprays it out through the atomizing nozzle 7, which can further react and sink the incompletely reacted exhaust gas. The gravity opening and closing device separates the purification box 1 into two layers, the upper and lower layers. When the atomizing nozzle 7 sprays water, it will accumulate on the upper surface of the gravity opening and closing device, and the gas in the lower layer cannot rise, which has the effect of fully reacting in the water layer 4. Then, when the water volume carried by the gravity opening and closing device reaches the upper limit, the water accumulated on the upper surface drops, and the remaining exhaust gas continues to rise and continue to be processed. The gravity opening and closing device The combined device serves to prevent the exhaust gas from rising, so that the exhaust gas can fully react in the water layer 4. A high-temperature chamber 10 is arranged on the top of the purification box 1. A multi-layer heating wire 11 is wound and fixed on the inside of the high-temperature chamber 10. A heater 12 is installed on the outside of the high-temperature chamber 10. The voltage of the heater 12 is 100V, and it mainly heats the heating wire 11. After the exhaust gas rises, it is adsorbed by the adsorption layer 6 and takes away part of the exhaust gas again. Then, it enters the high-temperature chamber 10, and completes the final degradation after contacting the heated heating wire 11, and is discharged through the air outlet arranged on the top of the high-temperature chamber 10.

[0023] The purification box 1 is also provided with a water changing valve on the side wall of the water layer 4 , and the water changing valve can complete the water storage and drainage of the internal water layer 4 .

[0024] The gravity opening and closing device includes two opening and closing plates 13, which are hinged to the inner walls of the purification box 1 on both sides, and the other sides of the two opening and closing plates 13 are pressed against each other in a horizontal state. When the two opening and closing plates 13 are pressed against each other, the gas and water flow are isolated; fixed plates 14 are also fixedly arranged on both sides of the inner wall of the purification box 1, and a slide groove 15 is arranged on the fixed plate 14. A first spring 16 is arranged on the side away from the center of the purification box 1 inside the two slide grooves 15, and the other ends of the two first springs 16 are fixedly connected with a moving rod 17, and the moving rod 17 is slidably penetrated inside the slide groove 15. The top of the moving rod 17 on both sides is fixedly arranged at the bottom of the opening and closing plate 13, and a second spring 18 is sleeved on the moving rod 17. One end of the second spring 18 presses against the lower bottom wall of the opening and closing plate 13, and the other end of the second spring 18 presses against the upper surface of the fixed plate 14; the two opening and closing plates 13 separate the purification box 1; when the exhaust gas enters the purification box 1, in order to allow the exhaust gas to fully react in the water layer 4, the circulating water is not turned on. When the reaction time is sufficient, the circulating water pump 8 is turned on, and the water in the water layer 4 is pumped into the spray pipe 5 for spraying. It is first accumulated on the upper surface of the two opening and closing plates 13. When the pressure on the two opening and closing plates 13 increases, since the upper surfaces of the two opening and closing plates 13 are inclined downward toward the center of the purification box 1, the two opening and closing plates 13 will be pressed downward from the tight position, and the second spring 18 is pressed downward. At the same time, the moving rod 17 is squeezed toward the first spring 16 in the slide groove 15. At this time, the tight position of the two opening and closing plates 13 is opened to be an opening, and the water flow is dumped from the top downward to flow back into the water layer 4 again, which can also play a role in further reacting and sinking the exhaust gas that has not been fully reacted, and the remaining exhaust gas can rise through the opened opening for reaction. After the reaction is completed, the circulating water pump 8 is turned off, the pressure on the two opening and closing plates 13 disappears, the first spring 16 pushes the moving rod 17 back to reset, and the second spring 18 pushes the two opening and closing plates 13 back to a flush and tight state.

[0025] At the same time, in order to prevent the lower layer of water mist or exhaust gas containing water molecules from interfering with and affecting the performance of the activated carbon, a dehumidification room 23 is added between the spray pipe 5 and the adsorption layer 6 to remove the lower layer of water mist. The dehumidification room 23 is arranged between the spray pipe 5 and the adsorption layer 6, and air vents and air inlets are respectively provided at the top and bottom of the dehumidification room 23. The air inlet is small, which can allow the exhaust gas to rise slowly and have sufficient time for dehumidification. The air vents and air inlets are filled with absorbent cotton 24, which can absorb the water mist in the air. At the same time, since there are multiple dehumidifiers 25 inside the dehumidification room 23, further drying is carried out through the work of the dehumidifiers 25.

[0026] As a preferred embodiment, a groove is provided on one end of the two opening and closing plates 13 that are pressed against each other, and a magnet 19 is fixedly provided in the groove, so as to enhance the sealing between the two opening and closing plates 13 .

[0027] Furthermore, support columns 20 are provided at both ends of the bottom of the purification box 1. At the same time, the circulating water pump 8 and the water purifier 9 are also arranged on the extension block of the support column 20 on one side. A motor box is fixedly provided on the outer side of the bottom of the purification box 1, and a rotating motor 21 is provided inside the motor box. A stirring rod 22 is fixedly connected to the output end of the rotating motor 21. The stirring rod 22 passes through the bottom of the purification box 1 and is inserted into the water layer 4. By turning on the rotating motor 21 to drive the stirring rod 22 to stir, the reaction between the exhaust gas and the water layer 4 can be accelerated.

[0028] The working principle of the above-mentioned paint spraying organic waste gas purification device is as follows:

[0029] First, turn on the axial flow fan 3 to draw the exhaust gas into the purification box 1, and then turn on the rotating motor 21 to drive the stirring rod 22 to stir, so as to accelerate the reaction between the exhaust gas and the water layer 4. After a period of time, turn on the circulating water pump 8 to pump water. The pumped water enters the spray pipe 5 after being processed by the water purifier 9 and is sprayed onto the upper surface of the two opening and closing plates 13 until the two opening and closing plates 13 are opened after being subjected to the maximum pressure. The water flow above is inclined downward, and the remaining exhaust gas at the bottom that is difficult to be absorbed by the reaction of the water layer 4 continues to float up, and is dehumidified and dried by the dehumidifier 25 and the absorbent cotton 24 in the dehumidification room 23 to avoid reducing the performance of the activated carbon. Then, the harmful exhaust gas is burned and removed under the high temperature of the heated electric heating wire 11 after being adsorbed by the honeycomb activated carbon.

[0030] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A paint spraying organic waste gas purification device, characterized in that: The invention comprises a purification box (1), wherein the side wall of the purification box (1) is connected to an air inlet pipe (2), an axial flow fan (3) is embedded in the air inlet pipe (2), a water layer (4), a spray pipe (5), a dehumidification chamber (23) and an adsorption layer (6) are arranged in sequence from bottom to top inside the purification box (1), the dehumidification chamber (23) is used to remove the water mist in the lower layer, the end of the air inlet pipe (2) is inserted into the water layer (4), a plurality of atomizing nozzles (7) are arranged at the bottom of the spray pipe (5), one end of the spray pipe (5) passes through the side wall of the purification box (1) and is connected to the water layer (4). ) is connected, a circulating water pump (8) and a water purifier (9) are arranged on the spray pipe (5) located outside the purification box (1), and a gravity opening and closing device is also arranged inside the purification box (1) between the spray pipe (5) and the water layer (4); a high-temperature chamber (10) is arranged on the top of the purification box (1), the purification box (1) and the high-temperature chamber (10) are connected through a pipeline, a plurality of layers of electric heating wires (11) are fixedly wound on the inside of the high-temperature chamber (10), a heater (12) is installed on the outside of the high-temperature chamber (10), and an air outlet is also arranged on the top of the high-temperature chamber (10).

2. A paint spraying organic waste gas purification device as claimed in claim 1, characterized in that: The gravity opening and closing device comprises two opening and closing plates (13), the two opening and closing plates (13) are respectively hinged to the two sides of the inner wall of the purification box (1), and the other sides of the two opening and closing plates (13) are pressed against each other in a horizontal state; fixed plates (14) are also fixedly arranged on the two sides of the inner wall of the purification box (1), and the fixed plates (14) are provided with sliding grooves (15), and the inside of the two sliding grooves (15) is provided with a first spring (16) on the side away from the center of the purification box (1), and the two first springs (16) The other end of the movable rod (16) is fixedly connected to a movable rod (17), the movable rod (17) is slidably inserted into the slide groove (15), the tops of the movable rods (17) on both sides are fixedly arranged on the bottom of the opening and closing plate (13), and a second spring (18) is sleeved on the movable rod (17), one end of the second spring (18) abuts against the lower bottom wall of the opening and closing plate (13), and the other end of the second spring (18) abuts against the upper surface of the fixed plate (14); the two opening and closing plates (13) separate the purification box (1).

3. A paint spraying organic waste gas purification device as claimed in claim 2, characterized in that: A groove is provided on one end of the two opening and closing plates (13) that are tightly abutted against each other, and a magnet (19) is fixedly provided in the groove.

4. A paint spraying organic waste gas purification device as claimed in claim 3, characterized in that: The upper surfaces of the two opening and closing plates (13) are both arranged to be inclined downward toward the center of the purification box (1).

5. A paint spraying organic waste gas purification device as claimed in claim 4, characterized in that: Support columns (20) are provided at both ends of the bottom of the purification box (1); a motor box is fixedly provided on the outer side of the bottom of the purification box (1); a rotating motor (21) is provided inside the motor box; an agitating rod (22) is fixedly connected to the output end of the rotating motor (21); the agitating rod (22) passes through the bottom of the purification box (1) and is inserted into the water layer (4).

6. A paint spraying organic waste gas purification device as claimed in claim 5, characterized in that: The adsorption layer (6) is honeycomb activated carbon.

7. A paint spraying organic waste gas purification device as claimed in claim 6, characterized in that: The dehumidification room (23) is arranged between the spray pipe (5) and the adsorption layer (6), and the dehumidification room (23) is provided with an air vent and an air inlet, and the air vent and the air inlet are filled with absorbent cotton (24). A plurality of dehumidifiers (25) are also arranged inside the dehumidification room (23).

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