Waste gas treatment structure of coating equipment

Abstract

The utility model provides a waste gas treatment structure of coating equipment, which comprises a coating chamber, a gas collecting hood is arranged in the coating chamber, the top of the gas collecting hood is connected with a first exhaust pipe, the top end of the first exhaust pipe penetrates through the coating chamber and is provided with a centrifugal fan, the output end of the centrifugal fan is provided with a connecting pipe, and the other end of the connecting pipe is connected with a spray tower. A plurality of spray heads are arranged on the inner circumferential wall of the spray tower, two filter plates are arranged in the spray tower, a sewage pool is arranged at the bottom of the spray tower, an external drain pipe is arranged on one side of the sewage pool, a water storage tank is arranged on one side of the sewage pool, a water pump is arranged on the top of the water storage tank, and a connecting water pipe is arranged on the top of the water pump. The connecting water pipe penetrates through the side wall of the spray tower and is connected with the multiple spray heads, the centrifugal fan discharges harmful gas to the spray tower through the gas collecting hood, the harmful gas is sprayed and washed by the spray heads, is further separated by the filter plate and the flow guide rod and falls into a sewage pool, dust and solvent steam are collected, and dust carried in waste gas is efficiently treated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of coating equipment, especially to a waste gas treatment structure of coating equipment. BACKGROUND

[0002] The waste gas treatment of coating equipment is an important environmental protection process, which involves a series of measures for effective collection, purification treatment and final emission of the generated waste gas in the coating operation in order to significantly reduce the pollution degree to the surrounding environment. This process not only includes the capture of harmful gases, but also covers the control of dust, solvent vapor and other pollutants to ensure that the waste gas discharged into the atmosphere meets the environmental protection standards and reduces the potential harm to human health and natural ecology.

[0003] Now there is a kind of industrial coating equipment with waste gas treatment function in Chinese patent document CN202122326131.7, including shell and processing box, processing box is located at the right lower side of shell;The bottom of the shell is provided with a spraying cavity, and the left and right sides of the lower part of the shell are provided with a vacuum cavity, the left and right sides of the inner wall of the spraying cavity are provided with a plurality of evenly distributed through holes, and each through hole is embedded with a filter screen;Vacuum pump is installed at the lower right side of the shell, and the left and right sides of the vacuum pump are respectively connected with the exhaust pipe and the air supply pipe, the left end of the exhaust pipe penetrates into the vacuum cavity located on the right side, and the top of the exhaust pipe is inserted with a connecting pipe communicated therewith;The utility model has the beneficial effects that: through the double treatment of spraying and filtering, the treatment effect of the treatment equipment on the generated waste gas is effectively improved, and secondary pollution to the atmosphere is avoided.

[0004] But the above-mentioned patent has certain defects in use, in the waste treatment process, the waste is first separated by the filter screen, however, in the case of a large amount of dust and solvent vapor in the waste gas, the filter screen is prone to blockage, which will significantly reduce the treatment efficiency.

[0005] Therefore, a waste gas treatment structure of coating equipment is proposed here to solve the above problems. UTILITY MODEL CONTENT

[0006] In order to overcome the shortcomings of the prior art, the utility model provides a waste gas treatment structure of coating equipment.

[0007] The utility model adopts the following technical scheme to realize:

[0008] A waste gas treatment structure of coating equipment, comprising

[0009] The coating chamber is internally provided with a gas collecting hood, the top of the gas collecting hood is connected with a first exhaust pipe, the top end of the first exhaust pipe is provided with a centrifugal fan penetrating through the coating chamber, the output end of the centrifugal fan is provided with a connecting pipe, the other end of the connecting pipe is connected with a spray tower, the spray tower is located at one side of the coating chamber, a plurality of spray heads are arranged on the inner circumferential wall of the spray tower, and two filter plates are arranged in the spray tower, a plurality of through holes are arranged on the two filter plates, and a flow guide rod is connected between the two filter plates;

[0010] The bottom of the spray tower is provided with a sewage pool, one side of the sewage pool is provided with an external drain pipe, one side of the sewage pool is provided with a water storage tank, the top of the water storage tank is provided with a water pump, the top of the water pump is provided with a connecting water pipe, and the connecting water pipe penetrates through the side wall of the spray tower and is connected with the plurality of spray heads.

[0011] As a preferred scheme of the utility model, the spray tower is internally provided with a double-layer demisting layer, the double-layer demisting layer is located at the top of the plurality of spray heads, the top of the double-layer demisting layer is provided with a second connecting pipe, the second connecting pipe penetrates through the top of the spray tower and is connected with a filter box, a plurality of placing clamps are arranged in the filter box, and a plurality of activated carbon plates are mounted in the plurality of placing racks.

[0012] As a preferred scheme of the utility model, a third exhaust pipe is arranged below the plurality of activated carbon plates, the third exhaust pipe is located at one side of the filter box, and one end of the third exhaust pipe is connected with an exhaust fan.

[0013] As a preferred scheme of the utility model, a second door is arranged at one side of the filter box, and an observation window is arranged in the second door.

[0014] As a preferred scheme of the utility model, a placing rack is arranged in the coating chamber, and two first doors are arranged at one side of the coating chamber.

[0015] As a preferred scheme of the utility model, an external water inlet pipe is arranged at one side of the water storage tank.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1. A gas collecting hood is arranged in the coating chamber, the centrifugal fan sends harmful gas to the spray tower through the gas collecting hood, the harmful gas is washed by the spray heads, dust and solvent vapor in the exhaust gas are effectively removed, the exhaust gas is rapidly condensed into liquid drops under the action of the spray heads, the liquid drops are further separated by the filter plates and the flow guide rod and fall into the sewage pool, the exhaust gas purification effect is ensured, after the separated exhaust gas enters the double-layer demisting layer, the exhaust gas is further removed, the residual harmful substances are adsorbed by the activated carbon plates, the residual harmful substances are completely removed, and the emission standard is ensured.

[0018] 2. The water storage tank is connected with the external water inlet pipe, ensuring continuous water supply, and the water pump delivers water to the spray head, forming an efficient spraying system, which efficiently converts harmful substances into liquid during spraying, and the sewage flows into the sewage tank and is discharged through the external drain pipe, efficiently treating the coating exhaust gas.

[0019] 3. The second door is provided with an observation window, which can monitor the state of the activated carbon plate in real time and replace it in time. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is the overall structure of the utility model;

[0021] Fig. 2 is the sectional view of the utility model;

[0022] Fig. 3 is the filter box structure of the utility model;

[0023] In the figure: 1, coating room; 2, first door; 3, shelf; 4, gas collecting hood; 5, first exhaust pipe; 6, centrifugal fan; 7, connecting pipe; 8, spray tower; 9, sewage tank; 10, external drain pipe; 11, filter plate; 12, spray head; 13, flow guide rod; 14, through hole; 15, water storage tank; 16, water pump; 17, connecting water pipe; 18, external water inlet pipe; 19, double-layer demisting layer; 20, second exhaust pipe; 21, filter box; 22, placing clamp; 23, activated carbon plate; 24, exhaust fan; 25, third exhaust pipe; 26, second door; 27, observation window. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Embodiment:

[0026] Please refer to Figs. 1-3 A waste gas treatment structure of a coating equipment, comprising:

[0027] The coating chamber 1 is internally provided with a gas collecting hood 4, the top of the gas collecting hood 4 is connected with a first exhaust pipe 5, the first exhaust pipe 5 penetrates through the coating chamber 1 and is connected with a centrifugal fan 6, the exhaust gas in the coating chamber 1 is collected by the gas collecting hood 4 and then enters the centrifugal fan 6 through the first exhaust pipe 5, a connecting pipe 7 is arranged at the output end of the centrifugal fan 6, the other end of the connecting pipe 7 is connected with a spray tower 8, the spray tower 8 is arranged at one side of the coating chamber 1, a plurality of nozzles 12 are arranged on the inner circumferential wall of the spray tower 8, two filter plates 11 are arranged in the spray tower 8, a plurality of through holes 14 are arranged on the two filter plates 11, and a flow guide rod 13 is connected between the two filter plates 11.

[0028] The bottom of the spray tower 8 is provided with a sewage tank 9, one side of the sewage tank 9 is provided with an external drain pipe 10, one side of the sewage tank 9 is provided with a water storage tank 15, the top of the water storage tank 15 is provided with a water pump 16, the top of the water pump 16 is provided with a connecting water pipe 17, and the connecting water pipe 17 penetrates through the side wall of the spray tower 8 and is connected with the plurality of nozzles 12.

[0029] In this embodiment, the coating chamber 1 is internally provided with a gas collecting hood 4, the top of the gas collecting hood 4 is connected with a first exhaust pipe 5, the first exhaust pipe 5 penetrates through the coating chamber 1 and is connected with a centrifugal fan 6, the exhaust gas in the coating chamber 1 is collected by the gas collecting hood 4 and then enters the centrifugal fan 6 through the first exhaust pipe 5, a connecting pipe 7 is arranged at the output end of the centrifugal fan 6, the other end of the connecting pipe 7 is connected with a spray tower 8, the spray tower 8 is arranged at one side of the coating chamber 1, the exhaust gas enters the spray tower 8 through the connecting pipe 7, a sewage tank 9 is arranged at the bottom of the spray tower 8, one side of the sewage tank 9 is provided with an external drain pipe 10, the other side of the sewage tank 9 is connected with a water storage tank 15, a water pump 16 arranged at the top of the water storage tank 15 is connected with the nozzles 12 through a connecting water pipe 17, the exhaust gas is sprayed in the spray tower 8 by the nozzles 12, and the liquid droplets are rapidly condensed under the action of the nozzles 12, fall into the sewage tank 9 through the through holes 14 on the filter plates 11 and the flow guide rod 13, and the sewage in the sewage tank 9 can be discharged through the external drain pipe 10,

[0030] Specifically, the spray tower 8 is internally provided with a double-layer demisting layer 19, the double-layer demisting layer 19 is arranged at the top of the plurality of nozzles 12, a second connecting pipe 7 is arranged at the top of the double-layer demisting layer 19, the second connecting pipe 7 penetrates through the top of the spray tower 8 and is connected with a filter box 21, a plurality of placement clamps 22 are arranged in the filter box 21, and a plurality of activated carbon plates 23 are arranged in the plurality of placement clamps 22.

[0031] In this embodiment, the spray tower 8 is internally provided with a double-layer demisting layer 19 arranged at the top, the double-layer demisting layer 19 can effectively intercept the tiny particles in the exhaust gas and filter the water mist, the second connecting pipe 7 connected at the top of the double-layer demisting layer 19 delivers the purified gas to the filter box 21, a plurality of placement clamps 22 are arranged in the filter box 21, and activated carbon plates 23 are arranged in the plurality of placement clamps 22, and the activated carbon plates 23 can efficiently adsorb the residual harmful substances.

[0032] Specifically, a third exhaust pipe 25 is arranged below the plurality of activated carbon plates 23, the third exhaust pipe 25 is located at one side of the filter box 21, and one end of the third exhaust pipe 25 is connected with an exhaust fan 24.

[0033] In this embodiment, a third exhaust pipe 25 is arranged below the plurality of activated carbon plates 23, the third exhaust pipe 25 is located at one side of the filter box 21, and the exhaust gas is discharged from the third exhaust pipe 25 after being filtered by the activated carbon plates 23 and then purified by the third fan.

[0034] Specifically, a second door 26 is arranged at one side of the filter box 21, and an observation window 27 is arranged in the second door 26.

[0035] In this embodiment, a second door 26 is arranged at one side of the filter box 21, which facilitates the periodic replacement of the activated carbon plates 23, and an observation window 27 is arranged in the second door 26, which facilitates real-time monitoring of the state of the activated carbon plates 23 and ensures the purification effect.

[0036] Specifically, a placing rack 3 is arranged in the coating chamber 1, and two first doors 2 are arranged at one side of the coating chamber 1.

[0037] In this embodiment, a placing rack 3 is arranged in the coating chamber 1, the placing rack 3 is used to place the workpieces to be coated during processing, two first doors 2 are arranged at one side of the coating chamber 1, which facilitates the access of the workpieces and the passage of the operators, and ensures the airtightness and safety of the coating process.

[0038] Specifically, an external water inlet pipe 18 is arranged at one side of the water storage tank 15.

[0039] In this embodiment, an external water inlet pipe 18 is arranged at one side of the water storage tank 15, the external water inlet pipe 18 is connected with an external water source, which ensures the stability of the water level in the water storage tank 15 and meets the spraying demand of the spray head 12.

[0040] The utility model discloses a principle is: in processing, through first warehouse door 2 enters the coating chamber 1, and places work piece on the stand 3 and carries out spraying, when spraying is completed, the fume collecting hood 4 collects waste gas, and through first exhaust pipe 5 and centrifugal fan 6 will be sent to the spray tower 8 through connecting pipe 7 with waste gas, after waste gas enters the spray tower 8, will carry out preliminary filtration through two filter plates 11, after waste gas enters filter plate 11, the water mist of spray head 12 sprays and waste gas fully contact, and dust and solvent vapor in waste gas are effectively dissolved, under the action of spray head 12, rapidly coagulate into droplet, and the droplet falls into sewage tank 9 with the through -hole 14 on filter plate 11 and flow guide rod 13, and sewage in sewage tank 9 is discharged through external drain pipe 10, after waste gas is handled through spray head 12, intercepts small particle through double -deck demisting layer 19, and the gas after purification enters filter box 21 through second connecting pipe 7, and activated carbon plate 23 further adsorbs residual harmful substance, and finally through the cooperation of exhaust fan 24 and third exhaust pipe 25, and it is discharged, ensure that the discharge reaches the standard.

[0041] The above, only for the preferable specific implementation mode of the utility model, but the protection scope of the utility model does not limit to this, any skilled in the art technical personnel in the utility model discloses the technical range of the utility model, according to the technical scheme of the utility model and its improvement concept add up to equivalent replacement or change, all should cover in the protection scope of the utility model.

Claims

1. An exhaust gas treatment structure of a coating apparatus, characterized by, Include: The coating chamber is equipped with a fume hood, the top of the fume hood is connected with a first exhaust pipe, the top end of the first exhaust pipe is equipped with a centrifugal fan, the output end of the centrifugal fan is equipped with a connecting pipe, the other end of the connecting pipe is connected with a spray tower, the spray tower is located on one side of the coating chamber, a plurality of spray heads are arranged on the inner wall of the spray tower, two filter plates are arranged in the spray tower, a plurality of through holes are arranged on the two filter plates, and a flow guide rod is connected between the two filter plates; The bottom of the spray tower is equipped with a sewage pool, one side of the sewage pool is equipped with an external drain pipe, one side of the sewage pool is equipped with a water storage tank, the top of the water storage tank is equipped with a water pump, the top of the water pump is equipped with a connecting water pipe, and the connecting water pipe penetrates through the side wall of the spray tower and is connected with a plurality of spray heads.

2. The exhaust treatment structure of a coating apparatus according to claim 1, characterized by: The spray tower is equipped with a double-layer demisting layer, the double-layer demisting layer is located on the top of the plurality of spray heads, the top of the double-layer demisting layer is equipped with a second connecting pipe, the second connecting pipe penetrates through the top of the spray tower and is connected with a filter box, a plurality of placing racks are arranged in the filter box, and a plurality of activated carbon plates are installed in the plurality of placing racks.

3. The exhaust treatment structure of a coating apparatus according to claim 2, characterized by: The plurality of activated carbon plates are equipped with a third exhaust pipe below, the third exhaust pipe is located on one side of the filter box, and the third exhaust pipe is connected with an exhaust fan at one end.

4. The exhaust treatment structure of a coating apparatus according to claim 3, characterized by: The side of the filter box is equipped with a second door, and the second door is equipped with an observation window.

5. The exhaust treatment structure of a coating apparatus according to claim 4, characterized by: The coating chamber is equipped with a placing rack, and two first doors are arranged on one side of the coating chamber.

6. The exhaust treatment structure of a coating apparatus according to claim 5, characterized by: One side of the water storage tank is equipped with an external water inlet pipe.

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