Waste gas monitoring and recycling device for paint workshop

Abstract

The utility model discloses a paint workshop waste gas monitoring and recycling device, which relates to the technical field of waste gas recycling and comprises a paint spraying workshop. A VOCs online monitoring device is installed on the inner wall of the paint spraying workshop, an air inlet is formed in the lower portion of the VOCs online monitoring device, a partition plate is installed at the lower end of the air inlet, a connecting pipe is arranged at the rear end of the air inlet, a net pressure box is installed at the rear end of the connecting pipe, and a dry type filter box is installed at the rear end of the net pressure box. Compared with an existing common waste gas purification device for the paint workshop, the waste gas monitoring and recycling device for the paint workshop can prevent mist generated during paint spraying from interfering with a VOCs online monitoring device above a gas inlet through the arrangement of an isolation plate, and waste gas obtained after purification of a zeolite rotating wheel can be recycled through the arrangement of a heat exchanger and a heat storage type oxidation furnace. And after further conversion, the air is conveyed into the paint spraying workshop, the use frequency of the ventilation unit is reduced, and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas recovery, in particular to a waste gas monitoring and recovery device for a paint shop. Background Art

[0002] Paint can bring color to objects and improve the beauty of various objects. It can also protect the surface of objects. Therefore, many objects will be painted after production. However, a large amount of waste gas is usually generated during the production and spraying process of paint. The paint mist, organic waste gas and odor factors contained in it will affect the atmosphere and the health of the operator.

[0003] For example, the patent document with application number 201821351617.8 discloses a waste gas purification device for a paint workshop. The utility model discloses a waste gas purification device for a paint workshop, including a body and a purification chamber, a first fan is arranged on the left side of the body, a spray tower is arranged at the left end of the ventilation duct, an air inlet is arranged at the lower side of the spray tower, and a sedimentation tank is arranged below the air inlet, the purification chamber is located inside the body, and a UV lamp is arranged inside the purification chamber, a glass partition is arranged on the side of the UV lamp, and a fixing frame is arranged on the outer side of the glass partition, a fixing hole is arranged on the inner side of the purification chamber, and an exhaust port is arranged on the right side of the purification chamber. The exhaust gas purification device for a paint shop is provided with an adjustable glass partition. When used in conjunction with a UV lamp, the flow direction of the exhaust gas in the device can be changed without affecting the UV lamp irradiating the exhaust gas for photolysis purification, thereby extending the residence time of the exhaust gas in the purification chamber and making the photolysis reaction purification of the device more sufficient. However, the exhaust gas purification device for a paint shop directly discharges the purified air after purifying the exhaust gas. Long-term use will increase the use frequency of the ventilation unit and increase the cost of use because the discharged purified air cannot be utilized.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a paint shop exhaust gas monitoring and recovery device is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a paint shop exhaust gas monitoring and recovery device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a paint shop waste gas monitoring and recovery device, including a paint spraying workshop, a VOCs online monitoring device is installed on the inner wall of the paint spraying workshop, and an air inlet is arranged below the VOCs online monitoring device, and an isolation plate is installed at the lower end of the air inlet, a connecting pipe is arranged at the rear end of the air inlet, and a net pressure box is installed at the rear end of the connecting pipe, and a dry filter box is installed at the rear end of the net pressure box, a zeolite rotor is installed at the rear end of the dry filter box, and a chimney is installed at the front end of the zeolite rotor, a regenerative heat oxidation furnace is arranged at the upper end of the zeolite rotor, and a heat exchanger is arranged at the front end of the regenerative heat oxidation furnace, and a waste heat exhaust pipe is installed at the front end of the heat exchanger.

[0007] Preferably, a slot is provided on the upper end surface of the dry filter box, and a support frame is installed inside the slot.

[0008] Preferably, limit bars are provided on both side surfaces of the support frame, and the support frame and the slot are slidably connected via the limit bars.

[0009] Preferably, a handle is provided at the upper end of the support frame, and a positive magnetic attraction plate is provided at the front end of the support frame.

[0010] Preferably, a negative magnetic plate is provided below the positive magnetic plate, and the negative magnetic plate is magnetically connected to the positive magnetic plate.

[0011] Preferably, an activated carbon filter element is provided inside the support frame, and the activated carbon filter element is installed inside the dry filter box.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a paint shop, a VOCs online monitoring device, an air inlet, a partition plate, a connecting pipe, a net pressure box, a dry filter box, a zeolite wheel, a chimney, a regenerative thermal oxidizer, a heat exchanger and a waste heat exhaust pipe. Through the provision of the partition plate, the mist generated by the paint spraying can be blocked to prevent the mist from adhering to the surface of the air inlet and interfering with the VOCs online monitoring device. Through the provision of the regenerative thermal oxidizer and the heat exchanger, the waste gas can be purified by the zeolite wheel, and then the waste heat air can be sent to the interior of the paint shop through the waste heat exhaust pipe through the conversion of the regenerative thermal oxidizer and the heat exchanger to improve the utilization efficiency of the waste gas.

[0014] 2. The utility model can purify and isolate the exhaust gas generated during spraying by setting the slot, the support frame, the positive magnetic plate, the negative magnetic plate, the handle, the limit strip and the activated carbon filter element through the multi-layer activated carbon filter element. The support frame with the activated carbon filter element can be taken out, replaced and cleaned at any time through the setting of the limit strip to ensure the filtering effect of the dry filter box. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a schematic diagram of the structure of the purification device of the utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the detachable activated carbon of the utility model.

[0018] In the figure: 1. Paint spraying workshop; 101. VOCs online monitoring device; 2. Air inlet; 201. Isolation plate; 202. Connecting pipe; 203. Net pressure box; 204. Dry filter box; 205. Zeolite wheel; 206. Chimney; 207. Regenerative oxidation furnace; 208. Heat exchanger; 209. Waste heat exhaust pipe; 3. Slot; 301. Support frame; 302. Positive magnetic plate; 303. Negative magnetic plate; 304. Handle; 305. Limiting strip; 306. Activated carbon filter element. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1 As shown, a paint shop waste gas monitoring and recovery device includes a VOCs online monitoring device 101 installed on the inner wall of the paint spraying workshop 1, and an air inlet 2 is arranged below the VOCs online monitoring device 101, and an isolation plate 201 is installed at the lower end of the air inlet 2, a connecting pipe 202 is arranged at the rear end of the air inlet 2, and a net pressure box 203 is installed at the rear end of the connecting pipe 202, and a dry filter box 204 is installed at the rear end of the net pressure box 203, a zeolite rotor 205 is installed at the rear end of the dry filter box 204, and a chimney 206 is installed at the front end of the zeolite rotor 205. The advantage of this arrangement is that, through the arrangement of the isolation plate 201, the mist generated by the paint spraying can be blocked to prevent the mist from adhering to the surface of the air inlet 2 and interfering with the VOCs online monitoring device 101, and through the arrangement of the dry filter box 204 and the zeolite rotor 205, the waste gas can be filtered and purified.

[0021] Furthermore, a regenerative thermal oxidizer 207 is provided at the upper end of the zeolite rotor 205, and a heat exchanger 208 is provided at the front end of the regenerative thermal oxidizer 207, and a waste heat exhaust pipe 209 is installed at the front end of the heat exchanger 208. The advantage of this arrangement is that, through the arrangement of the regenerative thermal oxidizer 207 and the heat exchanger 208, the waste gas can be purified at the zeolite rotor 205, and then the waste heat air can be sent into the interior of the paint shop 1 through the waste heat exhaust pipe 209 through the conversion of the regenerative thermal oxidizer 207 and the heat exchanger 208 to improve the utilization efficiency of the waste gas.

[0022] like Figure 2-Figure 3 As shown, a slot 3 is provided on the upper end surface of the dry filter box 204, and a support frame 301 is installed inside the slot 3, and limit strips 305 are provided on both side surfaces of the support frame 301, and the support frame 301 and the slot 3 are slidably connected by the limit strips 305. The advantage of this arrangement is that the exhaust gas generated during painting can be purified and isolated through the multi-layer activated carbon filter element 306. Through the setting of the limit strips 305, the support frame 301 with the activated carbon filter element 306 can be taken out, replaced and cleaned at any time to ensure the filtering effect of the dry filter box 204.

[0023] Furthermore, a handle 304 is provided at the upper end of the support frame 301, and a positive magnetic plate 302 is provided at the front end of the support frame 301, a negative magnetic plate 303 is provided below the positive magnetic plate 302, and the negative magnetic plate 303 and the positive magnetic plate 302 are magnetically connected, an activated carbon filter element 306 is provided inside the support frame 301, and the activated carbon filter element 306 is installed inside the dry filter box 204. The advantage of this arrangement is that the support frame 301 can be adsorbed and fixed by the arrangement of the negative magnetic plate 303 and the positive magnetic plate 302, thereby ensuring the stability of the support frame 301.

[0024] Working principle: When using the paint shop waste gas monitoring and recovery device, first, the zeolite wheel 205 sucks the waste gas generated by the paint shop 1 through the air inlet 2, and the VOCs online monitoring device 101 detects the air quality inside the paint shop 1. The waste gas passes through the connecting pipe 202 and is filtered by the net pressure box 203, the dry filter box 204 and the zeolite wheel 205 and then discharged from the chimney 206. At the same time, the regenerative thermal oxidation furnace 207 and the heat exchanger 208 can heat-convert a part of the air purified by the zeolite wheel 205 and send it to the interior of the paint shop 1 through the waste heat exhaust pipe 209 for recycling. This is the working principle of the paint shop waste gas monitoring and recovery device.

Claims

1. A paint shop exhaust gas monitoring and recovery device, comprising a paint shop (1), characterized in that: The inner wall of the paint spraying workshop (1) is installed with a VOCs online monitoring device (101), and an air inlet (2) is arranged below the VOCs online monitoring device (101), and an isolation plate (201) is installed at the lower end of the air inlet (2), a connecting pipe (202) is arranged at the rear end of the air inlet (2), and a clean pressure box (203) is installed at the rear end of the connecting pipe (202), and a dry pressure box (203) is installed at the rear end of the clean pressure box (203). A dry filter box (204) is provided, a zeolite rotor (205) is installed at the rear end of the dry filter box (204), and a chimney (206) is installed at the front end of the zeolite rotor (205), a regenerative thermal oxidation furnace (207) is provided at the upper end of the zeolite rotor (205), and a heat exchanger (208) is provided at the front end of the regenerative thermal oxidation furnace (207), and a waste heat exhaust pipe (209) is installed at the front end of the heat exchanger (208).

2. A paint shop waste gas monitoring and recovery device according to claim 1, characterized in that: A slot (3) is provided on the upper surface of the dry filter box (204), and a support frame (301) is installed inside the slot (3).

3. A paint shop waste gas monitoring and recovery device according to claim 2, characterized in that: Limiting strips (305) are provided on both side surfaces of the support frame (301), and the support frame (301) and the slot (3) are slidably connected via the limiting strips (305).

4. A paint shop waste gas monitoring and recovery device according to claim 2, characterized in that: A handle (304) is provided at the upper end of the support frame (301), and a positive magnetic attraction plate (302) is provided at the front end of the support frame (301).

5. A paint shop waste gas monitoring and recovery device according to claim 4, characterized in that: A negative magnetic attraction plate (303) is arranged below the positive magnetic attraction plate (302), and the negative magnetic attraction plate (303) and the positive magnetic attraction plate (302) are magnetically connected.

6. A paint shop waste gas monitoring and recovery device according to claim 2, characterized in that: An activated carbon filter element (306) is disposed inside the support frame (301), and the activated carbon filter element (306) is installed inside the dry filter box (204).

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