Automobile paint spraying tail gas treatment device and using method

Abstract

The invention discloses an automobile paint spraying tail gas treatment device and a using method, the automobile paint spraying tail gas treatment device comprises a first-stage filtering mechanism and a second-stage filtering mechanism, the first-stage filtering mechanism adopts a spraying tank, the spraying tank is provided with a gas inlet and a gas outlet, the gas inlet is connected with a gas inlet pipeline, and the gas outlet is connected with a gas outlet pipeline; the air outlet is connected with the secondary filtering mechanism through an air outlet pipeline; the secondary filtering mechanism adopts an activated carbon fiber filtering box, and an activated carbon fiber filter element is mounted in the activated carbon fiber filtering box; according to the automobile paint spraying device, two-stage treatment can be carried out on tail gas generated in the automobile paint spraying process through the first-stage filtering mechanism and the second-stage filtering mechanism, and the first-stage filtering mechanism adopts a spraying tank to spray and filter the tail gas, so that large particles in the tail gas are removed; the secondary filtering mechanism adopts an activated carbon fiber filter element to filter the tail gas, so that the waste gas is further purified, and the purification degree of the waste gas is improved.

Description

Technical Field

[0001] The invention relates to the technical field of paint waste gas treatment, and in particular to an automobile paint spraying tail gas treatment device and a use method thereof. Background Art

[0002] After a car is painted, it is often in the paint shop. Due to the painting operation, a large amount of paint exhaust gas will float in the air. Although the operator wears a mask, it is inevitable to inhale it into the lungs, which will cause harm to the body. Paint exhaust gas mainly refers to the mist particles or organic waste gas that appear in the painting process. At present, paint exhaust gas mainly includes the following types: 1. Organic waste gas generated in the process of diluting the spray agent or volatile waste gas generated by the use of diluent; 2. During the painting process, the spray paint particles cannot reach the painting area due to the long distance, and then scattered in the air; 3. Some water droplets in the air dissolve the paint particles and bring them into the air.

[0003] Existing paint spray purification treatment devices mostly use a single type of purification method during purification. After the purification is completed, some paint mist may still not be completely purified and the paint mist may be scattered into the air. In addition, the organic matter adsorbed by the activated carbon cannot be processed in time. The organic matter adsorbed by the activated carbon is also easy to volatilize into the air, causing more serious environmental pollution problems and affecting people's health. Summary of the invention

[0004] The purpose of the present invention is to provide an automobile paint spraying exhaust gas treatment device and a use method, which realizes two-stage treatment of automobile paint spraying exhaust gas by setting a primary filtering mechanism and a secondary filtering mechanism, thereby improving the exhaust gas treatment efficiency.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In the first aspect, an embodiment of the present invention provides an automobile paint spraying exhaust gas treatment device, including a primary filtering mechanism and a secondary filtering mechanism, wherein the primary filtering mechanism adopts a spray tank, and an air inlet and an air outlet are arranged on the spray tank, the air inlet is connected to an air inlet pipe, and the air outlet is connected to the secondary filtering mechanism through an air outlet pipe; the secondary filtering mechanism adopts an activated carbon fiber filter box, and an activated carbon fiber filter element is installed in the activated carbon fiber filter box, and an air outlet is arranged on the activated carbon fiber filter box, and the air outlet is connected to the exhaust pipe.

[0007] As a further technical solution, a water inlet valve pipe is arranged on the top of the spray tank, a spray head is arranged on the top of the spray tank, and a water filter tank is connected to the bottom of the side wall of the spray tank.

[0008] As a further technical solution, an activated carbon adsorption filter element is arranged inside the water filter tank, and the water outlet of the water filter tank is connected to the drain valve pipe through a sealing cover.

[0009] As a further technical solution, a first air pump is arranged on the air inlet pipe, a second air pump is arranged on the air outlet pipe, and a third air pump is arranged on the air exhaust pipe.

[0010] As a further technical solution, the primary filtering mechanism and the secondary filtering mechanism are fixedly mounted on a bearing platform.

[0011] As a further technical solution, the activated carbon fiber filter box includes a shell and a cover plate, an activated carbon fiber filter element accommodating chamber is provided in the shell, and the shell and the cover plate are detachably connected by bolts.

[0012] As a further technical solution, the air inlet is arranged at the bottom of the side wall of the spray tank body, and the air outlet is arranged at the top of the side wall of the spray tank tube body.

[0013] As a further technical solution, a hood is provided at the end of the exhaust pipe.

[0014] In a first aspect, an embodiment of the present invention provides a method for using an automobile paint spraying exhaust gas treatment device, comprising the following steps:

[0015] The exhaust gas enters the spray tank of the primary filtering mechanism through the air inlet, and water mist is sprayed through the spray head. The water mist adsorbs the particles in the exhaust gas and then falls to the bottom of the spray tank; the exhaust gas after the primary filtration enters the secondary filtering mechanism, and is filtered by the activated carbon fiber filter element. The filtered exhaust gas is discharged from the exhaust pipe.

[0016] As a further technical solution, the water mist after adsorbing the particles falls to the bottom of the spray tank to form sewage, and the sewage enters the water filter tank, is filtered by the active adsorption filter element in the sewage tank, and is discharged from the drain pipe.

[0017] The beneficial effects of the above embodiments of the present invention are as follows:

[0018] (1) The automobile paint spraying exhaust gas treatment device provided by the present invention can achieve two-stage treatment of the exhaust gas generated in the automobile paint spraying process by means of a primary filtering mechanism and a secondary filtering mechanism. The primary filtering mechanism adopts a spray tank to achieve spray filtration of the exhaust gas to remove larger particles in the exhaust gas, and the secondary filtering mechanism adopts an activated carbon fiber filter element to achieve exhaust gas filtration to remove volatile organic compounds, formaldehyde, toluene, hydrogen sulfide, chlorobenzene and other pollutants in the exhaust gas, thereby improving the degree of purification of the exhaust gas. The filtered exhaust gas is discharged through an exhaust pipe to avoid affecting the operator. Compared with the existing single purification method, it has higher treatment efficiency and better treatment effect.

[0019] (2) In the automobile paint spraying exhaust gas treatment device provided by the present invention, the wastewater generated by the spray tank enters the water filter tank for filtration, the filtered water is discharged, and the filtered wastewater is discharged to avoid polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] Figure 1 It is a schematic diagram of the overall structure of the automobile paint spraying exhaust gas treatment device of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the primary filtering mechanism of the present invention;

[0023] Figure 3 It is a schematic structural diagram of a water filter tank of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the secondary filtering mechanism of the present invention.

[0025] The schematic diagram is for illustrative purposes only;

[0026] Among them, 1. supporting platform; 2. primary filtering mechanism; 201. spray tank; 202. water inlet valve pipe; 203. water filter tank; 204. spray head; 205. activated carbon adsorption filter element; 206. sealing cover; 207. drain valve pipe; 3. first vacuum pump; 4. secondary filtering mechanism; 401. cover plate; 402. second vacuum pump; 403. activated carbon fiber filter element; 404. shell; 5. third vacuum pump; 6. controller; 7. exhaust duct; 701. hood. DETAILED DESCRIPTION

[0027] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0028] Example 1

[0029] In a typical embodiment of the present invention, Figure 1 As shown, an automobile paint spraying exhaust gas treatment device is provided, including a primary filtering mechanism 2 and a secondary filtering mechanism 4, the primary filtering mechanism 2 adopts a spray tank 201, and an air inlet and an air outlet are arranged on the spray tank 201, the air inlet is connected to the air inlet pipe, and the air outlet is connected to the secondary filtering mechanism 4 through the air outlet pipe; the secondary filtering mechanism 4 adopts an activated carbon fiber filter box, and an activated carbon fiber filter element 403 is installed in the activated carbon fiber filter box, and an air outlet is arranged on the activated carbon fiber filter box, and the air outlet is connected to the exhaust pipe 7.

[0030] like Figure 2 and Figure 3 As shown, a water inlet valve pipe 202 is arranged at the top of the spray tank 201, a spray head 204 is arranged at the top of the spray tank 201, and the spray head 204 is distributed in a ring shape in the spray tank 201. A water filter tank 203 is connected to the bottom of the side wall of the spray tank 201, and an activated carbon adsorption filter element 205 is arranged inside the water filter tank 203. The water outlet of the water filter tank 203 is connected to the drain valve pipe 207 through a sealing cover 206. The specific installation method is that a water filter tank 203 is installed and connected at the tank wall of the spray tank 201 through a conduit, an activated carbon adsorption filter element 205 is filled at the tank inner wall of the water filter tank 203, a sealing cover 206 is threadedly connected at the tank mouth of the water filter tank 203, an openable drain valve pipe 207 is installed and connected at the cover wall of the sealing cover 206, a spray head 204 is installed at the top of the tank inner wall of the spray tank 201, an input end of the spray head 204 is installed and connected with a water inlet valve pipe 202, and the water inlet valve pipe 202 runs through the spray tank 201.

[0031] In this embodiment, the air inlet pipe is provided with a first air pump 3, the air outlet pipe is provided with a second air pump 402, the exhaust pipe 7 is provided with a third air pump 5, the first air pump 3, the second air pump 402 and the third air pump 5 are all electrically connected to the controller 6, and the first air pump 3, the second air pump 402 and the third air pump 5 are controlled by the controller 6. Further, the controller is an electrical control box, and a Siemens PLC control unit is provided inside, and a touch screen is provided at the door panel, and the output end of the touch screen is electrically connected to the input end of the PLC control unit, wherein the input ends of the first air pump 3, the second air pump 402 and the third air pump 5 are electrically connected to the output end of the Siemens PLC controller, so as to realize the control of the first air pump 3, the second air pump 402 and the third air pump 5.

[0032] In this embodiment, the primary filtering mechanism 2 and the secondary filtering mechanism 4 are fixedly mounted on the supporting platform 1 .

[0033] like Figure 4 As shown, the activated carbon fiber filter box includes a shell 404 and a cover plate 401, wherein an activated carbon fiber filter element accommodating chamber is provided in the shell 404, and the shell 404 and the cover plate 401 are detachably connected by bolts, and the activated carbon fiber element can be replaced regularly. The specific installation method is that the shell 404 is installed on the carrier 1, an activated carbon fiber filter element 403 is placed on the inner wall of the shell 404, and the cover plate 401 is installed on the top of the air filter shell 404 by bolts, the extraction end of the second air pump 402 is connected to the tank wall of the spray tank 201 by a pipeline, and the discharge end of the second air pump 402 is connected to the shell wall of the shell 404 by a pipeline.

[0034] In this embodiment, the air inlet is arranged at the bottom of the side wall of the spray tank 201, and the air outlet is arranged at the top of the side wall of the spray tank 201, which can ensure that the exhaust gas entering the spray pipe 201 can flow out of the spray tank along the longest path, increase the spraying time of the exhaust gas, and thus improve the efficiency of particle filtration in the exhaust gas.

[0035] In this embodiment, a hood 701 is provided at the end of the exhaust pipe 7. The design of the hood prevents the gas outside the exhaust pipe from flowing back into the exhaust pipe, and only allows the gas in the exhaust pipe to be discharged, thereby preventing the occurrence of backflow.

[0036] The working principle of the automobile paint spraying exhaust gas treatment device provided in this embodiment is as follows:

[0037] After the exhaust gas is extracted by the first vacuum pump 3 and transported to the spray tank 201 through the pipeline, the water inlet valve pipe 202 is connected to the external water source, and after the water inlet valve pipe 202 is opened, water mist is sprayed through the spray head 204. The water mist adsorbs the particles in the exhaust gas and then falls to the bottom of the spray tank 201 to form sewage. Since the spray tank 201 is connected to the tank wall and a water filter tank 203 is installed, after the sewage enters the water filter tank 203, since the water filter tank 203 is filled with an activated carbon adsorption filter element 205, the activated carbon adsorption filter element 205 adsorbs and filters the sewage, so that the personnel opens the drain valve pipe 207 to facilitate the discharge of the filtered sewage to avoid polluting the environment.

[0038] Furthermore, after the second vacuum pump 402 extracts the gas in the spray tank 201 through the pipeline, the exhaust gas is transported to the shell body 404 through the pipeline. Since the activated carbon fiber filter element 403 is located in the shell body 404, the air filter shell 404 is sealed by the cover plate 401, and then the air in the air filter shell 404 is extracted by the third vacuum pump 5, so that the activated carbon fiber filter element 403 filters the exhaust gas to avoid polluting the atmosphere when the exhaust gas is discharged.

[0039] Example 2

[0040] In a typical embodiment of the present invention, a method for using an automobile paint spraying exhaust gas treatment device is provided, comprising the following steps:

[0041] The exhaust gas enters the spray tank of the primary filtering mechanism through the air inlet, and water mist is sprayed through the spray head. The water mist adsorbs the particles in the exhaust gas and then falls to the bottom of the spray tank; the exhaust gas after the primary filtration enters the secondary filtering mechanism, and is filtered by the activated carbon fiber filter element. The filtered exhaust gas is discharged from the exhaust pipe.

[0042] Furthermore, the water mist after adsorbing the particles falls to the bottom of the spray tank to form sewage, and the sewage enters the water filter tank, is filtered by the active adsorption filter element in the sewage tank, and is discharged from the drain pipe.

[0043] The first-level filtering mechanism and the second-level filtering mechanism are set up to realize two-stage treatment of the exhaust gas generated in the process of automobile paint spraying. Among them, the first-level filtering mechanism adopts a spray tank to realize spray filtration of the exhaust gas to remove larger particles in the exhaust gas, and the second-level filtering mechanism adopts an activated carbon fiber filter element to realize exhaust filtration to remove volatile organic compounds, formaldehyde, toluene, hydrogen sulfide, chlorobenzene and other pollutants in the exhaust gas, thereby improving the purification degree of the exhaust gas. The filtered exhaust gas is discharged through the exhaust pipe to avoid affecting the operator. Compared with the existing single purification method, it has higher processing efficiency and better processing effect.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automobile paint spraying exhaust gas treatment device, characterized in that: It includes a primary filtering mechanism and a secondary filtering mechanism, the primary filtering mechanism adopts a spray tank, the spray tank is provided with an air inlet and an air outlet, the air inlet is connected to the air inlet pipe, and the air outlet is connected to the secondary filtering mechanism through the air outlet pipe; the secondary filtering mechanism adopts an activated carbon fiber filter box, an activated carbon fiber filter element is installed in the activated carbon fiber filter box, the activated carbon fiber filter box is provided with an air outlet, and the air outlet is connected to the exhaust pipe.

2. The automobile paint spraying exhaust gas treatment device according to claim 1, characterized in that: A water inlet valve pipe is arranged on the top of the spray tank, a spray head is arranged on the top of the spray tank, and a water filter tank is connected to the bottom of the side wall of the spray tank.

3. The automobile paint spraying exhaust gas treatment device according to claim 2, characterized in that: An activated carbon adsorption filter element is arranged inside the water filter tank, and a water outlet of the water filter tank is connected to a drain valve pipe through a sealing cover.

4. The automobile paint spraying exhaust gas treatment device according to claim 1, characterized in that: The air inlet pipeline is provided with a first air pump, the air outlet pipeline is provided with a second air pump, and the air exhaust pipeline is provided with a third air pump.

5. The automobile paint spraying exhaust gas treatment device according to claim 1, characterized in that: The primary filtering mechanism and the secondary filtering mechanism are fixedly mounted on the bearing platform.

6. The automobile paint spraying exhaust gas treatment device according to claim 1, characterized in that: The activated carbon fiber filter box comprises a shell and a cover plate. An activated carbon fiber filter element accommodating chamber is arranged in the shell. The shell and the cover plate are detachably connected by bolts.

7. The automobile paint spraying exhaust gas treatment device according to claim 1, characterized in that: The air inlet is arranged at the bottom of the side wall of the spray tank body, and the air outlet is arranged at the top of the side wall of the spray tank tube body.

8. The automobile paint spraying exhaust gas treatment device according to claim 1, characterized in that: The end of the exhaust pipe is provided with a hood.

9. A method for using the automobile paint spraying exhaust gas treatment device according to any one of claims 1 to 8, characterized in that: The following steps are involved: The exhaust gas enters the spray tank of the primary filtering mechanism through the air inlet, and water mist is sprayed through the spray head. The water mist adsorbs the particles in the exhaust gas and then falls to the bottom of the spray tank; the exhaust gas after the primary filtration enters the secondary filtering mechanism, and is filtered by the activated carbon fiber filter element. The filtered exhaust gas is discharged from the exhaust pipe.

10. The method for using the automobile paint spraying exhaust gas treatment device according to claim 9, characterized in that: The water mist after adsorbing the particles falls to the bottom of the spray tank to form sewage. The sewage enters the water filter tank, is filtered by the active adsorption filter element in the sewage tank, and is discharged from the drain pipe.

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