A NMP waste gas emission purification treatment equipment

Abstract

The invention relates to the technical field of waste gas purification, and discloses a NMP waste gas emission purification treatment device. The NMP waste gas at the NMP waste gas collection end is pumped into a machine body by an air pump, and water is sprayed by a spray pipe to purify the NMP waste gas in the machine body, and the purified water falls on a liquid collecting bucket, and the liquid collecting bucket collects the purified water. The liquid sweeping blades rotate in the liquid collecting bucket to sweep the purified water, and the waste gas also passes through the liquid discharge end of the liquid collecting bucket and contacts the purified water. The waste gas passes through the purified water and is stirred by the liquid sweeping blades, so that the waste gas is more fully dissolved in the water, so that after the waste gas is sprayed, the water containing the nmp waste gas is collected and the waste gas is mixed and treated again, so as to increase the miscible content of the nmp waste gas in a single water droplet, so that the nmp waste gas is quickly purified in a shorter contact time between the nmp waste gas and the water, thereby improving the utilization rate of water in the purification process and reducing the use cost of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas purification, in particular to NMP waste gas emission purification treatment equipment. Background Art

[0002] With the development of industry, global air pollution is becoming more and more serious, and the management of waste gas emissions in various countries has become more stringent. More and more waste gas treatment equipment has appeared on the market. Among them, the purification of NMP waste gas has become more and more important as the application scope of lithium batteries becomes wider and wider.

[0003] In the existing NMP waste gas treatment equipment, such as Chinese patent CN218853952U, multiple groups of bubble caps can be stably installed through multiple groups of tower plates. Since the bubble caps usually have two structural forms, circular and strip, and there are slits around the bubble caps, the airflow rising from the riser changes direction when passing through the bubble caps, and is dispersed into fine bubbles through the slits and enters the liquid layer, so as to close the gas-liquid contact and increase the fluid turbulence, thereby strengthening the gas-liquid mass transfer, and then facilitating the gas-liquid upward transfer, and then through the demister, it can prevent the evaporation operation from The loss of useful products or contamination of condensed liquid can reduce the liquid foam entrained in the gas and liquid; the filter tube in the filter assembly can be connected in series to the water inlet end of the spray rack, and then the filter sponge and non-woven filter cotton can be used to perform double filtration on the water flowing through, thereby preventing impurities in the water from clogging the water outlet end of the spray rack. Since the arc groove is opened at the bottom of the filter sponge, the filtration area of ​​the filter sponge can be expanded. The metal mesh plate can not only limit the non-woven filter cotton and filter sponge, but also filter the water flowing through again.

[0004] However, there are still the following problems: during the spraying process, the contact time between the nmp waste gas and the spraying water is limited. During the shorter contact time, the miscible content of the nmp waste gas in a single water droplet is low, resulting in a low utilization rate of water in the purification treatment and a high cost of equipment use. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides an NMP waste gas emission purification treatment device, which has the advantages of collecting water containing NMP waste gas and then mixing the waste gas after the waste gas is sprayed, so as to increase the miscible content of the NMP waste gas in a single water droplet, so that the NMP waste gas can be quickly purified within a shorter contact time between the NMP waste gas and the water, thereby improving the utilization rate of water in the purification treatment and reducing the use cost of the equipment, and solves the problem that during the spraying process, the contact time between the NMP waste gas and the sprayed water is limited, and within a shorter contact time, the miscible content of the NMP waste gas in a single water droplet is low, resulting in a low utilization rate of water in the purification treatment and a higher use cost of the equipment.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an NMP waste gas emission purification treatment device, comprising a body, a purification mechanism arranged on the body, and an auxiliary mechanism arranged on the body, wherein the purification mechanism comprises an air pump and a spray pipe, the air pump is arranged beside the body, the air inlet end of the air pump is connected to the NMP waste gas collection end, the air outlet end of the air pump is connected to the bottom end of the body, the spray pipe is arranged in the body, the spray pipe is located at the upper part of the body, and the spray pipe is used to spray water to purify the NMP waste gas;

[0007] The auxiliary mechanism includes a liquid collecting bucket and liquid sweeping blades. The liquid collecting bucket is fixedly installed in the body and is located below the spray pipe. The liquid collecting bucket is adapted to the internal cross-sectional area of ​​the body. The top of the liquid collecting bucket is a collecting end. The liquid sweeping blades are arranged in the liquid collecting bucket. A plurality of the liquid sweeping blades are evenly distributed in the liquid collecting bucket in a circular shape. The liquid sweeping blades are attached to the inner wall of the liquid collecting bucket and circulate in the liquid collecting bucket.

[0008] Preferably, the purification mechanism also includes an air supply pipe, which is fixedly installed on the body, the air supply pipe is connected to the body, and the air supply pipe is located at the bottom end of the side wall of the body. The air outlet end of the air pump is fixedly connected to the air supply pipe, and the air outlet end of the air pump is connected to the air supply pipe. An air inlet is fixedly installed on the air inlet end of the air pump, and the air inlet is connected to the air pump. The air inlet is connected to the NMP waste gas collection end, and an exhaust port is fixedly installed on the top of the body, and the exhaust port is connected to the body. The exhaust port is used to discharge the purified gas.

[0009] Preferably, a booster pump is fixedly arranged next to the machine body, a filter box is fixedly arranged next to the booster pump, the filter box is fixedly connected to the water inlet end of the booster pump, the filter box is communicated with the water inlet end of the booster pump, the filter box is communicated with a water supply system, a filter screen is arranged in the filter box, the filter screen is located between the water inlet end of the booster pump and the water supply system, a water pipe is fixedly installed on the discharge end of the booster pump, the water pipe is communicated with the discharge end of the booster pump, the water pipe passes through the side wall of the machine body, and the water pipe and the machine body are sealed.

[0010] Preferably, a valve is fixedly installed on the water pipe, the valve is arranged on the water supply path of the water pipe, the water pipe passes through the valve, the valve is connected with the water pipe, the valve is used to control the connection of the water pipe, a spray pipe is fixedly installed in the machine body, the spray pipe is connected with the water pipe, a wire mesh is fixedly installed in the machine body, the wire mesh is located above the spray pipe, and the wire mesh is used to place a filter layer.

[0011] Preferably, a drain outlet is fixedly installed on the body, the drain outlet is located at the bottom end of the side wall of the body, the drain outlet is connected to the body, a liquid pump is fixedly arranged next to the body, the water inlet end of the liquid pump is fixedly connected to the drain outlet, the water inlet end of the liquid pump is connected to the drain outlet, a diverter valve is fixedly installed on the drain end of the liquid pump, the diverter valve is connected to the liquid pump, and the diverter valve is used to control the flow direction of the discharged liquid.

[0012] Preferably, the auxiliary mechanism also includes an air collecting hopper, which is fixedly installed in the machine body, and is located below the liquid collecting hopper. The bottom end of the air collecting hopper is a collecting end, and the air collecting hopper is adapted to the internal cross-sectional area of ​​the machine body. A spiral tube is arranged between the air collecting hopper and the liquid collecting hopper, and the top end of the spiral tube is fixedly connected to the bottom end of the liquid collecting hopper, and the spiral tube is communicated with the liquid collecting hopper, and the bottom end of the spiral tube is fixedly connected to the top end of the air collecting hopper, and the spiral tube is communicated with the air collecting hopper.

[0013] Preferably, a first gear ring is rotatably engaged on the inner wall of the body, the size of the first gear ring is adapted to the cross-sectional area of ​​the inner wall of the body, the first gear ring is located above the liquid collecting bucket, and a plurality of liquid sweeping blades are fixedly mounted on the first gear ring, the liquid sweeping blades are evenly distributed in a circular shape on the first gear ring, and the liquid sweeping blades are in contact with the inner wall of the liquid collecting bucket.

[0014] Preferably, a servo motor is fixedly mounted on the top of the body, the shaft of the servo motor passes through the wall of the body, a bevel gear is fixedly mounted on the shaft of the servo motor, the bevel gear is located in the body, and the bevel gear is meshed with the first gear ring.

[0015] Preferably, a plurality of slide rails are fixedly mounted on the first gear ring, the slide rails are evenly distributed in a circular shape, the slide rails are slidably fitted with moving parts, the moving parts are fixedly mounted with flapping blades, and the flapping blades are located between adjacent liquid sweeping blades.

[0016] Preferably, a limiting ring is fixedly installed on the moving part, a plurality of auxiliary gears are rotatably matched on the first gear ring, the auxiliary gears are opposite to the limiting ring one by one, a positioning rod is fixedly installed on the shaft of the auxiliary gear, the positioning rod extends into the limiting ring, the positioning rod is matched with the limiting ring, the auxiliary gear and the bevel gear are staggered in position, a second gear ring is fixedly installed in the body, the second gear ring is located above the first gear ring, the size of the second gear ring is matched with the internal cross-sectional area of ​​the body, and the second gear ring is meshed with the auxiliary gears.

[0017] Compared with the prior art, the present invention provides a NMP waste gas emission purification treatment device, which has the following beneficial effects:

[0018] 1. The NMP waste gas emission purification treatment equipment uses an air pump to pump the NMP waste gas at the NMP waste gas collection end into the machine body, and then starts the spray pipe. The spray pipe sprays water to purify the NMP waste gas in the machine body. The purified waste gas is discharged from the top of the machine body. At the same time, as the water purifies the NMP waste gas, the purified water falls on the liquid collecting bucket. The liquid collecting bucket collects the purified water and starts the liquid sweeping blade. The liquid sweeping blade rotates in the liquid collecting bucket to sweep the purified water. At the same time, the waste gas also The waste gas will pass through the discharge end of the liquid collecting bucket and come into contact with the purified water. The waste gas will pass through the purified water and be stirred by the liquid sweeping blades, so that the waste gas will be more fully dissolved in the water. After the waste gas is sprayed, the water containing the nmp waste gas will be collected and the waste gas will be mixed again, thereby increasing the miscible content of the nmp waste gas in a single water droplet, so that the nmp waste gas can be quickly purified in a shorter contact time with water, thereby increasing the utilization rate of water in the purification process and reducing the use cost of the equipment.

[0019] 2. The NMP waste gas emission purification treatment equipment can obtain the filtration efficiency of the water source when the pressure pump delivers water through the setting of the filter box, avoid the presence of impurities in the water and other objects to damage the pressure pump, prevent equipment failure during use, and improve the stability of equipment use.

[0020] 3. The NMP waste gas emission purification treatment equipment, through the setting of flapping blades, enables the liquid sweeping blades to further improve the mixing effect of water and waste gas when stirring water and waste gas for full mixing, thereby further improving the utilization rate of water and further improving the stability of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the internal structure distribution of the present invention;

[0022] Figure 2 It is a schematic diagram of the purification mechanism structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the water pipe structure distribution of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure distribution of the steel wire mesh of the present invention;

[0025] Figure 5 It is a schematic diagram of the auxiliary mechanism structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure distribution of the liquid collecting hopper of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure distribution of the first gear ring of the present invention;

[0028] Figure 8 It is a schematic diagram of the overall structure of the purification treatment equipment of the present invention.

[0029] In the figure: 1. body; 2. purification mechanism; 21. air supply pipe; 22. air pump; 23. air inlet; 24. exhaust port; 25. booster pump; 26. filter box; 27. water pipe; 28. valve; 29. ​​spray pipe; 210. wire mesh; 211. drain outlet; 212. liquid pump; 213. diverter valve; 3. auxiliary mechanism; 31. liquid collecting bucket; 32. air collecting bucket; 33. spiral tube; 34. first gear ring; 35. liquid sweeping blade; 36. servo motor; 37. bevel gear; 38. slide rail; 39. moving part; 310. flapping blade; 311. limit ring; 312. auxiliary gear; 313. positioning rod; 314. second gear ring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes an NMP waste gas emission purification treatment equipment.

[0032] In a typical implementation of the present application, Figure 1 As shown, an NMP waste gas emission purification treatment device includes a body 1, a purification mechanism 2 arranged on the body 1, and an auxiliary mechanism 3 arranged on the body 1. The purification mechanism 2 includes an air pump 22 and a spray pipe 29. The air pump 22 is arranged beside the body 1. The air inlet end of the air pump 22 is connected to the NMP waste gas collection end, and the air outlet end of the air pump 22 is connected to the bottom end of the body 1. The spray pipe 29 is arranged in the body 1, and the spray pipe 29 is located at the upper part of the body 1. The spray pipe 29 is used to spray water to purify the NMP waste gas;

[0033] The auxiliary mechanism 3 includes a liquid collecting bucket 31 and liquid sweeping blades 35. The liquid collecting bucket 31 is fixedly installed in the machine body 1. The liquid collecting bucket 31 is located below the spray pipe 29. The liquid collecting bucket 31 is adapted to the internal cross-sectional area of ​​the machine body 1. The top of the liquid collecting bucket 31 is the collecting end. Liquid sweeping blades 35 are arranged in the liquid collecting bucket 31. Multiple liquid sweeping blades 35 are evenly distributed in the liquid collecting bucket 31 in a circular shape. The liquid sweeping blades 35 are attached to the inner wall of the liquid collecting bucket 31, and the liquid sweeping blades 35 circulate in the liquid collecting bucket 31.

[0034] When using the present invention:

[0035] The air pump 22 is started, and the air pump 22 pumps the NMP waste gas at the NMP waste gas collection end into the machine body 1, and then the spray pipe 29 is started, and the spray pipe 29 sprays water to purify the NMP waste gas in the machine body 1. The purified waste gas is discharged from the top of the machine body 1. At the same time, as the water purifies the NMP waste gas, the purified water falls on the liquid collecting bucket 31, and the liquid collecting bucket 31 collects the purified water, and starts the liquid sweeping blade 35, which rotates in the liquid collecting bucket 31 to sweep the purified water. At the same time, the waste gas It will also pass through the discharge end of the liquid collecting bucket 31 and come into contact with the purified water. The waste gas will pass through the purified water and be stirred by the liquid sweeping blades 35, so that the waste gas will be more fully dissolved in the water. After the waste gas is sprayed, the water containing the nmp waste gas will be collected and the waste gas will be mixed again, thereby increasing the miscible content of the nmp waste gas in a single water droplet, so that the nmp waste gas can be quickly purified in a shorter contact time with water, thereby increasing the utilization rate of water in the purification process and reducing the use cost of the equipment.

[0036] Example 2

[0037] like Figure 2-Figure 4 As shown, the difference from the above embodiment is that the purification mechanism 2 also includes an air supply pipe 21, the air supply pipe 21 is fixedly installed on the body 1, the air supply pipe 21 is connected to the body 1, the air supply pipe 21 is located at the bottom end of the side wall of the body 1, the air outlet end of the air pump 22 is fixedly connected to the air supply pipe 21, the air outlet end of the air pump 22 is connected to the air supply pipe 21, the air inlet end of the air pump 22 is fixedly installed with an air inlet 23, the air inlet 23 is connected to the air pump 22, the air inlet 23 is connected to the NMP waste gas collection end, and the top of the body 1 is fixedly installed with an exhaust port 24, the exhaust port 24 is connected to the body 1, and the exhaust port 24 is used to discharge the purified gas.

[0038] Furthermore, a booster pump 25 is fixedly arranged next to the body 1, and a filter box 26 is fixedly arranged next to the booster pump 25. The filter box 26 is fixedly connected to the water inlet end of the booster pump 25, and the filter box 26 is communicated with the water inlet end of the booster pump 25. The filter box 26 is connected to the water supply system. A filter net is arranged in the filter box 26, and the filter net is located between the water inlet end of the booster pump 25 and the water supply system. A water pipe 27 is fixedly installed on the discharge end of the booster pump 25, and the water pipe 27 is communicated with the discharge end of the booster pump 25. The water pipe 27 runs through the side wall of the body 1, and the water pipe 27 and the body 1 are sealed.

[0039] Furthermore, a valve 28 is fixedly installed on the water pipe 27, and the valve 28 is arranged on the water supply path of the water pipe 27. The water pipe 27 passes through the valve 28, and the valve 28 is connected to the water pipe 27. The valve 28 is used to control the connection of the water pipe 27. A spray pipe 29 is fixedly installed in the body 1, and the spray pipe 29 is connected to the water pipe 27. A wire mesh 210 is fixedly installed in the body 1, and the wire mesh 210 is located above the spray pipe 29. The filter layer is placed on the wire mesh 210.

[0040] Furthermore, a drain outlet 211 is fixedly installed on the body 1, and the drain outlet 211 is located at the bottom end of the side wall of the body 1. The drain outlet 211 is connected to the body 1. A liquid pump 212 is fixedly arranged next to the body 1. The water inlet end of the liquid pump 212 is fixedly connected to the drain outlet 211, and the water inlet end of the liquid pump 212 is connected to the drain outlet 211. A diverter valve 213 is fixedly installed on the drain end of the liquid pump 212, and the diverter valve 213 is connected to the liquid pump 212. The diverter valve 213 is used to control the flow direction of the discharged liquid.

[0041] Example 3

[0042] like Figure 5-Figure 8 As shown, the difference from the above embodiment is that the auxiliary mechanism 3 also includes an air collecting hopper 32, which is fixedly installed in the body 1, and the air collecting hopper 32 is located below the liquid collecting hopper 31, and the bottom end of the air collecting hopper 32 is a collecting end, and the air collecting hopper 32 is adapted to the internal cross-sectional area of ​​the body 1, and a spiral tube 33 is arranged between the air collecting hopper 32 and the liquid collecting hopper 31, and the top end of the spiral tube 33 is fixedly connected to the bottom end of the liquid collecting hopper 31, and the spiral tube 33 is communicated with the liquid collecting hopper 31, and the bottom end of the spiral tube 33 is fixedly connected to the top end of the air collecting hopper 32, and the spiral tube 33 is communicated with the air collecting hopper 32.

[0043] Furthermore, a first gear ring 34 is rotatably engaged on the inner wall of the body 1, and the size of the first gear ring 34 is adapted to the cross-sectional area of ​​the inner wall of the body 1. The first gear ring 34 is located above the liquid collecting bucket 31, and a plurality of liquid sweeping blades 35 are fixedly mounted on the first gear ring 34. The liquid sweeping blades 35 are evenly distributed in a circular shape on the first gear ring 34, and the liquid sweeping blades 35 are in contact with the inner wall of the liquid collecting bucket 31.

[0044] Furthermore, a servo motor 36 is fixedly mounted on the top of the body 1 , the shaft of the servo motor 36 passes through the wall of the body 1 , a bevel gear 37 is fixedly mounted on the shaft of the servo motor 36 , the bevel gear 37 is located inside the body 1 , and the bevel gear 37 is meshed with the first gear ring 34 .

[0045] Furthermore, a plurality of slide rails 38 are fixedly mounted on the first gear ring 34 . The slide rails 38 are evenly distributed in a circular shape. The slide rails 38 are slidably fitted with moving parts 39 . The moving parts 39 are fixedly mounted with flapping blades 310 . The flapping blades 310 are located between adjacent liquid sweeping blades 35 .

[0046] Furthermore, a limit ring 311 is fixedly installed on the moving part 39, and a plurality of auxiliary gears 312 are rotatably matched on the first gear ring 34. The auxiliary gears 312 are opposite to the limit ring 311 one by one. A positioning rod 313 is fixedly installed on the axis of the auxiliary gear 312. The positioning rod 313 extends into the limit ring 311. The positioning rod 313 is adapted to the limit ring 311. The auxiliary gear 312 and the bevel gear 37 are staggered in their positions. A second gear ring 314 is fixedly installed in the body 1. The second gear ring 314 is located above the first gear ring 34. The size of the second gear ring 314 is adapted to the internal cross-sectional area of ​​the body 1, and the second gear ring 314 and the auxiliary gear 312 are meshed.

[0047] Working principle:

[0048] The air pump 22 is started, and the air pump 22 pumps the NMP waste gas at the NMP waste gas collection end into the machine body 1, and then the spray pipe 29 is started, and the spray pipe 29 sprays water to purify the NMP waste gas in the machine body 1. The purified waste gas is discharged from the top of the machine body 1. At the same time, as the water purifies the NMP waste gas, the purified water falls on the liquid collecting bucket 31, and the liquid collecting bucket 31 collects the purified water, and starts the liquid sweeping blade 35, which rotates in the liquid collecting bucket 31 to sweep the purified water. At the same time, the waste gas It will also pass through the discharge end of the liquid collecting bucket 31 and come into contact with the purified water. The waste gas will pass through the purified water and be stirred by the liquid sweeping blades 35, so that the waste gas will be more fully dissolved in the water. After the waste gas is sprayed, the water containing the nmp waste gas will be collected and the waste gas will be mixed again, thereby increasing the miscible content of the nmp waste gas in a single water droplet, so that the nmp waste gas can be quickly purified in a shorter contact time with water, thereby increasing the utilization rate of water in the purification process and reducing the use cost of the equipment.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An NMP waste gas emission purification treatment device, comprising a body (1), a purification mechanism (2) arranged on the body (1), and an auxiliary mechanism (3) arranged on the body (1), characterized in that: The purification mechanism (2) comprises an air pump (22) and a spray pipe (29); the air pump (22) is arranged beside the machine body (1); the air inlet end of the air pump (22) is connected to the NMP waste gas collection end; the air outlet end of the air pump (22) is connected to the bottom end of the machine body (1); the spray pipe (29) is arranged inside the machine body (1); the spray pipe (29) is located at the upper part of the machine body (1); the spray pipe (29) is used to spray water to purify the NMP waste gas; The auxiliary mechanism (3) comprises a liquid collecting bucket (31) and liquid sweeping blades (35). The liquid collecting bucket (31) is fixedly installed in the machine body (1). The liquid collecting bucket (31) is located below the spray pipe (29). The liquid collecting bucket (31) is adapted to the internal cross-sectional area of ​​the machine body (1). The top end of the liquid collecting bucket (31) is a collecting end. The liquid sweeping blades (35) are arranged in the liquid collecting bucket (31). A plurality of the liquid sweeping blades (35) are evenly distributed in the liquid collecting bucket (31) in a circular shape. The liquid sweeping blades (35) are in contact with the inner wall of the liquid collecting bucket (31). The liquid sweeping blades (35) circulate in the liquid collecting bucket (31). The auxiliary mechanism (3) further comprises an air collecting hopper (32), the air collecting hopper (32) being fixedly installed in the machine body (1), the air collecting hopper (32) being located below the liquid collecting hopper (31), the bottom end of the air collecting hopper (32) being a collecting end, the air collecting hopper (32) being adapted to the internal cross-sectional area of ​​the machine body (1), a spiral tube (33) being arranged between the air collecting hopper (32) and the liquid collecting hopper (31), the top end of the spiral tube (33) being fixedly connected to the bottom end of the liquid collecting hopper (31), the spiral tube (33) being communicated with the liquid collecting hopper (31), the bottom end of the spiral tube (33) being fixedly connected to the top end of the air collecting hopper (32), the spiral tube (33) being communicated with the air collecting hopper (32); A first gear ring (34) is rotatably engaged with the inner wall of the machine body (1); the size of the first gear ring (34) is adapted to the cross-sectional area of ​​the inner wall of the machine body (1); the first gear ring (34) is located above the liquid collecting bucket (31); a plurality of liquid sweeping blades (35) are fixedly mounted on the first gear ring (34); the liquid sweeping blades (35) are evenly distributed on the first gear ring (34) in a circular shape; and the liquid sweeping blades (35) are in contact with the inner wall of the liquid collecting bucket (31).

2. A NMP waste gas emission purification treatment equipment according to claim 1, characterized in that: The purification mechanism (2) further comprises an air supply pipe (21), the air supply pipe (21) being fixedly mounted on the machine body (1), the air supply pipe (21) being connected to the machine body (1), the air supply pipe (21) being located at the bottom end of the side wall of the machine body (1), the air outlet end of the air pump (22) being fixedly connected to the air supply pipe (21), the air outlet end of the air pump (22) being connected to the air supply pipe (21), the air inlet end of the air pump (22) being fixedly mounted with an air inlet (23), the air inlet (23) being connected to the air pump (22), the air inlet (23) being connected to the NMP waste gas collection end, and the top end of the machine body (1) being fixedly mounted with an exhaust port (24), the exhaust port (24) being connected to the machine body (1), the exhaust port (24) being used to discharge the gas after purification treatment.

3. A NMP waste gas emission purification treatment equipment according to claim 2, characterized in that: A booster pump (25) is fixedly arranged next to the machine body (1), and a filter box (26) is fixedly arranged next to the booster pump (25); the filter box (26) is fixedly connected to the water inlet end of the booster pump (25), the filter box (26) is in communication with the water inlet end of the booster pump (25), the filter box (26) is in communication with the water supply system, a filter screen is arranged inside the filter box (26), the filter screen is located between the water inlet end of the booster pump (25) and the water supply system, a water pipe (27) is fixedly installed on the drainage end of the booster pump (25), the water pipe (27) is in communication with the drainage end of the booster pump (25), the water pipe (27) passes through the side wall of the machine body (1), and the water pipe (27) and the machine body (1) are sealed.

4. The NMP waste gas emission purification treatment equipment according to claim 3, characterized in that: A valve (28) is fixedly mounted on the water pipe (27). The valve (28) is arranged on a water supply path of the water pipe (27). The water pipe (27) passes through the valve (28). The valve (28) is connected to the water pipe (27). The valve (28) is used to control the connection of the water pipe (27). A spray pipe (29) is fixedly mounted in the machine body (1). The spray pipe (29) is connected to the water pipe (27). A steel mesh (210) is fixedly mounted in the machine body (1). The steel mesh (210) is located above the spray pipe (29). A filter layer is placed on the steel mesh (210).

5. The NMP waste gas emission purification treatment equipment according to claim 4, characterized in that: A drain port (211) is fixedly mounted on the machine body (1), the drain port (211) being located at the bottom end of a side wall of the machine body (1), the drain port (211) being in communication with the machine body (1), a liquid pump (212) being fixedly mounted beside the machine body (1), the water inlet end of the liquid pump (212) being fixedly connected to the drain port (211), the water inlet end of the liquid pump (212) being in communication with the drain port (211), a diverter valve (213) being fixedly mounted on the drain end of the liquid pump (212), the diverter valve (213) being in communication with the liquid pump (212), the diverter valve (213) being used to control the flow direction of discharged liquid.

6. The NMP waste gas emission purification treatment equipment according to claim 5, characterized in that: A servo motor (36) is fixedly mounted on the top of the machine body (1); the shaft of the servo motor (36) passes through the wall of the machine body (1); a bevel gear (37) is fixedly mounted on the shaft of the servo motor (36); the bevel gear (37) is located inside the machine body (1); and the bevel gear (37) is meshed with the first gear ring (34).

7. The NMP waste gas emission purification treatment equipment according to claim 6, characterized in that: A plurality of slide rails (38) are fixedly mounted on the first gear ring (34), the slide rails (38) are evenly distributed in a circular shape, the slide rails (38) are slidably matched with moving parts (39), the moving parts (39) are fixedly mounted with flapping blades (310), and the flapping blades (310) are located between adjacent liquid sweeping blades (35).

8. The NMP waste gas emission purification treatment equipment according to claim 7, characterized in that: A limiting ring (311) is fixedly mounted on the moving member (39); a plurality of auxiliary gears (312) are rotatably mounted on the first gear ring (34); the auxiliary gears (312) are opposed to the limiting ring (311) one by one; a positioning rod (313) is fixedly mounted on the shaft of the auxiliary gear (312); the positioning rod (313) extends into the limiting ring (311); the positioning rod (313) is matched with the limiting ring (311); the auxiliary gear (312) and the bevel gear (37) are staggered in position; a second gear ring (314) is fixedly mounted in the body (1); the second gear ring (314) is located above the first gear ring (34); the size of the second gear ring (314) is matched with the internal cross-sectional area of ​​the body (1); the second gear ring (314) and the auxiliary gear (312) are meshed.

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