Special organic waste gas purification device for paint spray booth

Abstract

The utility model discloses a special organic waste gas purification device for a paint spray booth, which comprises a front paint mist dry type filter box shell, a box body, a high-temperature-resistant desorption centrifugal fan, a catalytic furnace shell and a desorption centrifugal fan, the box body and the high-temperature-resistant desorption centrifugal fan are fixedly connected with a second pipe, and a stainless steel fin heating pipe is fixedly installed at the position, close to the lower end, in the catalytic furnace shell. According to the special organic waste gas purification device for the paint spray booth, the labor and time for mounting and replacing activated carbon can be greatly reduced, the maintenance cost is saved, meanwhile, the adsorption efficiency of the activated carbon box can be improved, the equipment cost is reduced, the applicability of a product is improved, the dust holding capacity is greatly improved, and the filtering area is increased; paint mist at the tail of the filter is basically eliminated, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of organic waste gas purification devices, in particular to a special organic waste gas purification device for a paint spraying room. Background Art

[0002] A paint spray room is a closed room specially used for painting, spraying or painting. It is mainly used to spray paint evenly on the surface of a workpiece in a closed environment to achieve the purposes of beauty, corrosion resistance, protection and functionality. Harmful gases and exhaust gases will be generated during the spraying process, so an organic waste gas purification device is needed to purify the harmful gases and exhaust gases; however, the organic waste gas purification device currently used has an activated carbon box structure that uses honeycomb carbon to be manually stacked in the box. The installation and replacement of activated carbon is very labor-intensive, and the carbon layer and the box wall panel are not well sealed, which affects the adsorption effect. Moreover, as an adsorption material, honeycomb activated carbon has a relatively low adsorption efficiency and a small total adsorption capacity. The pre-treatment of paint mist in existing organic waste gas purification devices generally uses water curtain washing, but the water curtain treatment effect is poor and there is water pollution. Utility Model Content

[0003] The main purpose of the utility model is to provide a special organic waste gas purification device for a paint spraying room, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A special organic waste gas purification device for a paint spraying room comprises a pre-paint mist dry filter box housing, a box body, a high-temperature resistant desorption centrifugal fan, a catalytic furnace housing, and a desorption centrifugal fan. The other end of the pre-paint mist dry filter box housing is fixedly connected to the box body with a No. 1 pipe, and the box body is fixedly connected to the high-temperature resistant desorption centrifugal fan with a No. 2 pipe. A stainless steel fin heating tube is fixedly installed near the lower end of the catalytic furnace housing, a precious metal catalyst is installed at the upper end of the stainless steel fin heating tube inside the catalytic furnace housing, and a stainless steel plate heat exchanger is installed at the upper end of the precious metal catalyst inside the catalytic furnace housing. One end of the stainless steel plate heat exchanger is fixedly connected to the high-temperature resistant desorption centrifugal fan with a No. 1 connecting pipe, and the upper end of the stainless steel plate heat exchanger is fixedly connected to a No. 2 connecting pipe. The other end of the box body is fixedly connected to a No. 3 pipe near the upper end, and the No. 3 pipe is communicated with the No. 2 connecting pipe. The desorption centrifugal fan is fixedly connected to the box body with a No. 5 pipe.

[0006] Preferably, a lower adsorption pneumatic valve is installed near one end of the No. 1 pipe, a lower desorption pneumatic valve is installed on the No. 2 pipe, a desorption exhaust valve is installed at the other end of the No. 3 pipe, and an upper desorption pneumatic valve is installed near one end of the No. 3 pipe.

[0007] Preferably, an upper adsorption pneumatic valve is installed on the No. 5 pipe, the lower middle end of the No. 3 pipe is fixedly connected to the No. 4 pipe, a cooling electric regulating valve is installed on the No. 4 pipe, and a cooling centrifugal fan is fixedly installed at the lower end of the No. 4 pipe.

[0008] Preferably, an equipment air inlet is opened at one end of the pre-paint mist dry filter box shell, a labyrinth-type primary-efficiency cotton paint mist filter is installed at one end inside the pre-paint mist dry filter box shell, and a honeycomb-structured bag-type medium-efficiency filter is installed at the other end inside the pre-paint mist dry filter box shell.

[0009] Preferably, an activated carbon filler layer is provided inside the box body, and the activated carbon filler layer is filled with granular activated carbon treated by an impregnation process. Feed electric plug valves are installed near the upper end of the two end surfaces of the box body, and unloading electric plug valves are installed near the lower end of the two end surfaces of the box body.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. The setting of the feed electric gate valve, unloading electric gate valve and granular activated carbon greatly reduces the labor and time for installing and replacing activated carbon, saves maintenance costs, and the granular activated carbon has a large surface area, relatively high adsorption efficiency, and a large total adsorption capacity. In addition, the granular activated carbon is treated by an impregnation process, which can handle some special chemical components in the exhaust gas, improve the adsorption efficiency of the activated carbon box, reduce equipment costs, and improve the applicability of the product.

[0012] 2. The installation of labyrinth-type primary-efficiency cotton paint mist filter and honeycomb-structured bag-type medium-efficiency filter greatly improves the dust holding capacity, increases the filtration area, basically eliminates the paint mist at the tail of the filter, and extends the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the organic waste gas purification device specially used for paint spraying rooms of the utility model.

[0014] In the figure: 101, pre-paint mist dry filter box housing; 102, equipment air inlet; 103, labyrinth-type primary-efficiency cotton paint mist filter; 104, honeycomb bag-type medium-efficiency filter; 201, lower side adsorption pneumatic valve; 202, upper side adsorption pneumatic valve; 203, feed electric gate valve; 204, discharge electric gate valve; 205, activated carbon filler layer; 206, upper side desorption pneumatic valve; 207, lower side desorption pneumatic valve; 208, desorption centrifugal fan; 3 01. High-temperature resistant desorption centrifugal fan; 302. Catalytic furnace shell; 303. Stainless steel plate heat exchanger; 304. Precious metal catalyst; 305. Stainless steel finned heating tube; 306. Desorption exhaust valve; 307. Cooling supplement centrifugal fan; 308. Cooling supplement electric regulating valve; 401. Pipe No. 1; 402. Pipe No. 2; 403. Connecting pipe No. 1; 404. Pipe No. 3; 405. Pipe No. 4; 406. Connecting pipe No. 2; 407. Pipe No. 5; 501. Box. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0016] like Figure 1 As shown, a special organic waste gas purification device for a paint spraying room includes a pre-paint mist dry filter box housing 101, a box body 501, a high-temperature resistant desorption centrifugal fan 301, a catalytic furnace housing 302, and a desorption centrifugal fan 208. The other end of the pre-paint mist dry filter box housing 101 is fixedly connected to the box body 501 with a No. 1 pipe 401, and the box body 501 is fixedly connected to the high-temperature resistant desorption centrifugal fan 301 with a No. 2 pipe 402. A stainless steel fin heating pipe 305 is fixedly installed near the lower end of the catalytic furnace housing 302. The stainless steel fin heating pipe 305 is fixedly installed near the lower end of the catalytic furnace housing 302. A precious metal catalyst 304 is installed at the upper end of the housing 501. A stainless steel plate heat exchanger 303 is installed at the upper end of the precious metal catalyst 304 inside the catalytic furnace shell 302. One end of the stainless steel plate heat exchanger 303 is fixedly connected to the high-temperature resistant desorption centrifugal fan 301 with a No. 1 connecting pipe 403. The upper end of the stainless steel plate heat exchanger 303 is fixedly connected to a No. 2 connecting pipe 406. The other end of the box 501 is fixedly connected to a No. 3 pipe 404 near the upper end. The No. 3 pipe 404 is in communication with the No. 2 connecting pipe 406. The desorption centrifugal fan 208 is fixedly connected to the box 501 with a No. 5 pipe 407.

[0017] A lower adsorption pneumatic valve 201 is installed near one end of the No. 1 pipe 401, a lower desorption pneumatic valve 207 is installed on the No. 2 pipe 402, a desorption exhaust valve 306 is installed at the other end of the No. 3 pipe 404, and an upper desorption pneumatic valve 206 is installed near one end of the No. 3 pipe 404; an upper adsorption pneumatic valve 202 is installed on the No. 5 pipe 407, the lower end of the middle of the No. 3 pipe 404 is fixedly connected to the No. 4 pipe 405, a cooling electric regulating valve 308 is installed on the No. 4 pipe 405, and a cooling centrifugal fan 307 is fixedly installed at the lower end of the No. 4 pipe 405; an equipment air inlet 102 is opened at one end of the pre-paint mist dry filter box housing 101, a labyrinth-type primary-effect cotton paint mist filter 103 is installed at one end of the pre-paint mist dry filter box housing 101, and a The honeycomb structure bag-type medium-efficiency filter 104 greatly improves the dust holding capacity, increases the filtration area, basically eliminates the paint mist at the tail of the filter, and extends the service life; an activated carbon filler layer 205 is provided inside the box 501, and the activated carbon filler layer 205 is filled with granular activated carbon treated by an impregnation process. A feed electric plug-in valve 203 is installed near the upper end of the two end surfaces of the box 501, and a discharge electric plug-in valve 204 is installed near the lower end of the two end surfaces of the box 501, which reduces the labor and time for installing and replacing activated carbon, saves maintenance costs, and the granular activated carbon has a large surface area, relatively high adsorption efficiency, and a large total adsorption capacity. In addition, the granular activated carbon is treated by an impregnation process, which can handle special chemical components in some exhaust gases, improve the adsorption efficiency of the activated carbon box, reduce equipment costs, and improve the applicability of the product.

[0018] It should be noted that the present invention is a special organic waste gas purification device for paint spraying rooms. When in use, it is first necessary to open the lower adsorption pneumatic valve 201 and the upper adsorption pneumatic valve 202, close the upper desorption pneumatic valve 206 and the lower desorption pneumatic valve 207, start the desorption centrifugal fan 208, and allow the organic waste gas to enter the pre-paint mist dry filter box shell 101 through the equipment air inlet 102, and pass through the labyrinth-type primary cotton paint mist filter 103 and the honeycomb structure bag-type medium efficiency filter 104 for filtration, and then enter the box body 501 through the No. 1 pipe 401 to adsorb the organic waste gas through the granular activated carbon, and then be discharged from the desorption centrifugal fan 208 through the No. 5 pipe 407. When the granular activated carbon is saturated with adsorption, close the lower adsorption pneumatic valve 201 and the upper adsorption pneumatic valve 202, open the upper air inlet 102, and filter the organic waste gas through the labyrinth-type primary cotton paint mist filter 103 and the honeycomb structure bag-type medium efficiency filter 104. The side desorption pneumatic valve 206 and the lower side desorption pneumatic valve 207 start the stainless steel fin heating tube 305 inside the catalytic furnace shell 302 to heat the air, and at the same time start the high-temperature resistant desorption centrifugal fan 301, so that the hot air enters the box 501 through the No. 1 connecting pipe 403 and the No. 2 pipe 402, desorbs the organic waste gas in the granular activated carbon, and enters the catalytic furnace shell 302 through the No. 3 pipe 404 and the No. 2 connecting pipe 406, catalytically oxidizes and decomposes the organic waste gas. After purification, part of the hot air is discharged through the desorption exhaust valve 306, and part of the hot air returns to the granular activated carbon in the box 501 through the pipeline to continue desorption. After about an hour, the waste gas in the granular activated carbon is completely desorbed and enters the catalytic furnace shell 302 for catalytic oxidation. The granular activated carbon is regenerated and can be separated from the adsorbed organic waste gas again.

[0019] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. Special organic waste gas purification device for paint spraying room, characterized by: The invention comprises a front paint mist dry filter box housing (101), a housing (501), a high temperature resistant desorption centrifugal fan (301), a catalytic furnace housing (302), and a desorption centrifugal fan (208). The other end of the front paint mist dry filter box housing (101) is fixedly connected to the housing (501) with a No. 1 pipe (401). The housing (501) and the high temperature resistant desorption centrifugal fan (301) are fixedly connected with a No. 2 pipe (402). A stainless steel fin heating pipe (305) is fixedly installed near the lower end of the catalytic furnace housing (302). A noble metal catalyst (304) is installed at the upper end of the stainless steel fin heating pipe (305) inside the catalytic furnace housing (302). A stainless steel plate heat exchanger (303) is installed at the upper end of the noble metal catalyst (304) inside the catalytic furnace housing (302). One end of the heat exchanger (303) is fixedly connected to the high-temperature resistant desorption centrifugal fan (301) with a No. 1 connecting pipe (403), the upper end of the stainless steel plate heat exchanger (303) is fixedly connected to the No. 2 connecting pipe (406), the other end of the box (501) is fixedly connected to the No. 3 pipe (404) near the upper end, the No. 3 pipe (404) is communicated with the No. 2 connecting pipe (406), the desorption centrifugal fan (208) is fixedly connected to the box (501) with a No. 5 pipe (407), one end of the pre-paint mist dry filter box housing (101) is provided with an equipment air inlet (102), one end of the interior of the pre-paint mist dry filter box housing (101) is installed with a labyrinth-type primary-efficiency cotton paint mist filter (103), and the other end of the interior of the pre-paint mist dry filter box housing (101) is installed with a honeycomb structure bag-type medium-efficiency filter (104).

2. The organic waste gas purification device for a paint spraying room according to claim 1 is characterized in that: A lower adsorption pneumatic valve (201) is installed near one end of the No. 1 pipe (401), a lower desorption pneumatic valve (207) is installed on the No. 2 pipe (402), a desorption exhaust valve (306) is installed at the other end of the No. 3 pipe (404), and an upper desorption pneumatic valve (206) is installed near one end of the No. 3 pipe (404).

3. The organic waste gas purification device for a paint spraying room according to claim 2 is characterized in that: The fifth pipe (407) is provided with an upper adsorption pneumatic valve (202), the middle lower end of the third pipe (404) is fixedly connected to the fourth pipe (405), the fourth pipe (405) is provided with a cooling electric regulating valve (308), and the lower end of the fourth pipe (405) is fixedly provided with a cooling centrifugal fan (307).

4. The organic waste gas purification device for a paint spraying room according to claim 3 is characterized in that: An activated carbon filler layer (205) is provided inside the box (501), and the activated carbon filler layer (205) is filled with granular activated carbon treated by an impregnation process. Both ends of the box (501) are provided with feed electric gate valves (203) near the upper end, and both ends of the box (501) are provided with discharge electric gate valves (204) near the lower end.

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