Recovery device for recovering heavy aromatics in hydrogen peroxide tail gas

Abstract

The utility model relates to the technical field of hydrogen peroxide tail gas recovery, and discloses a recovery device for recovering hydrogen peroxide tail gas heavy aromatics, which comprises a shell, and a condensing mechanism for condensing and forming the heavy aromatics and a recovery mechanism for recovering the heavy aromatics are arranged on the inner side of the shell. A cooling mechanism used for cooling the hydrogen peroxide tail gas is further arranged at the top of the shell, a purification pipe is further arranged at the top of the shell, a plurality of activated carbon filter plates distributed at equal intervals are arranged on the inner side of the purification pipe, and the outer end of the purification pipe is connected with a purification mechanism used for purifying the hydrogen peroxide tail gas. When the aromatic hydrocarbon recovery device is used, a user can recover aromatic hydrocarbon in tail gas through the condensation mechanism, the cooling mechanism and the recovery mechanism, the effect that the aromatic hydrocarbon in the tail gas can still be recovered when a pipeline is damaged and needs to be overhauled is achieved, the tail gas can be condensed for multiple times, and the recovery efficiency is improved. Therefore, the recovery efficiency and the recovery effect of the tail gas are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen peroxide tail gas recovery, and specifically relates to a recovery device for recovering heavy aromatic hydrocarbons in hydrogen peroxide tail gas. Background Art

[0002] The device for recovering heavy aromatic hydrocarbons from tail gas of hydrogen peroxide is a special equipment for recovering heavy aromatic hydrocarbons from tail gas in the process of hydrogen peroxide production. The existing treatment method is to use an oxidation tail gas cooler to condense the aromatic hydrocarbons and water therein and then recover them.

[0003] The Chinese utility model patent with application number: CN201720029751.5 discloses a highly efficient recycling device for tail gas from hydrogen peroxide production, comprising a cylindrical air inlet, a condenser is arranged on the top of the air inlet, the air inlet and the condenser are bonded by super glue, a water inlet is arranged on the surface of the condenser, the water inlet and the condenser are bonded by super glue, a water outlet is arranged on one side of the condenser, the water outlet and the condenser are bonded by super glue, the results of the highly efficient recycling device for tail gas from hydrogen peroxide production show that it not only solves the problem of excessive environmental protection standards, but also recovers aromatic hydrocarbons in part of the oxidized tail gas, achieving the purpose of recycling, thereby reducing production costs, saving energy, reducing emissions and increasing efficiency, and compared with conventional methods, the highly efficient recycling of tail gas from hydrogen peroxide production is greatly improved, so the speed is fast, the efficiency is high, the recycling rate is high, and the energy consumption is reduced, so the highly efficient recycling device for tail gas from hydrogen peroxide production has broad application prospects.

[0004] However, when the above technical solution is in use, since it only has a single serpentine tube, when the serpentine tube or the condenser is damaged and needs to be repaired, the user can only continue to recover the exhaust gas after repairing it, which affects the recovery efficiency. In addition, the exhaust gas cooling method is relatively simple, resulting in the presence of more aromatics in the exhausted exhaust gas, resulting in low recovery effect and recovery efficiency of aromatics. Utility Model Content

[0005] The utility model aims to provide a recovery device for recovering heavy aromatic hydrocarbons in hydrogen peroxide tail gas, so as to solve the problem that when the above technical solution is used, since only a single serpentine tube is provided, when the serpentine tube or the condensing tank is damaged and needs to be repaired, the user can only continue to recover the tail gas after repairing it, thereby affecting the recovery efficiency, and the cooling method of the tail gas is relatively simple, resulting in more aromatic hydrocarbons in the discharged tail gas, thereby resulting in low recovery effect and recovery efficiency of the aromatic hydrocarbons.

[0006] The utility model provides the following technical scheme: a recovery device for recovering heavy aromatic hydrocarbons from hydrogen peroxide tail gas, comprising a shell, a condensing mechanism for condensing and forming heavy aromatic hydrocarbons and a recovery mechanism for recovering heavy aromatic hydrocarbons are arranged on the inner side of the shell, a cooling mechanism for cooling the hydrogen peroxide tail gas is also arranged on the top of the shell, a purification pipe is also arranged on the top of the shell, a plurality of activated carbon filter plates distributed at equal intervals are arranged on the inner side of the purification pipe, and a purification mechanism for purifying the hydrogen peroxide tail gas is connected to the outer end of the purification pipe.

[0007] As a preferred embodiment of the above technical solution, the condensing mechanism includes an air inlet pipe fixedly connected to the outside of the shell, and a condensing box fixedly connected to the bottom of the inner side of the shell, the outside of the air inlet pipe is connected to a first electric ball valve, the end of the first electric ball valve away from the air inlet pipe is fixedly connected to a first connecting pipe, the end of the first connecting pipe away from the first electric ball valve passes through the condensing box and is fixedly connected to a spiral tube, the end of the spiral tube away from the first connecting pipe passes through the condensing box and is fixedly connected to a second connecting pipe, the outside of the second connecting pipe is fixedly connected to a second electric ball valve, and the end of the second electric ball valve away from the second connecting pipe is connected to an air outlet pipe, and a user can fill the water tank with cold water through the filling pipe on the top of the water tank, and then pass through two second A water pump and a second water pump transport the cold water in the water tank to the water cavity in the condensation box and the condensation support through the first water pipe and the second water pipe, and then the hydrogen peroxide exhaust gas is connected to the intake pipe. At this time, the user can adjust the intake duct of the exhaust gas through the first electric ball valve and the second electric ball valve, and then the exhaust gas enters the first connecting pipe and the spiral pipe. When the exhaust gas enters the spiral pipe, the cold water in the condensation box will cool it down and shape it. When the spiral pipe or the first connecting pipe is damaged and needs to be repaired, the user can change the intake duct of the exhaust gas through the first electric ball valve and the second electric ball valve to continue to recover the aromatics in the exhaust gas, thereby achieving the effect of improving the recovery efficiency of the aromatics, thereby improving the convenience of use.

[0008] As a preferred embodiment of the above technical solution, the first electric ball valve is installed at the inner bottom of the outer shell, and there are two first connecting pipes, spiral pipes and second connecting pipes. One end of the two first connecting pipes is fixedly connected to the first electric ball valve, one end of the two spiral pipes is respectively connected to one end of the two first connecting pipes away from the first electric ball valve, and the other ends of the two spiral pipes pass through the condensation box and are connected to the two second connecting pipes. One end of the two second connecting pipes away from the spiral pipes is connected to the second electric ball valve, and the second electric ball valve is installed on the top of the condensation box.

[0009] As a preferred embodiment of the above technical solution, the recovery mechanism includes a collection cylinder fixedly connected to the exhaust pipe, the top of the collection cylinder is fixedly connected to a first exhaust pipe, the end of the first exhaust pipe away from the collection cylinder is fixedly connected to a condensation support, the inner side of the condensation support is provided with a water cavity, the inner side of the condensation support is provided with a conical cavity, the top of the conical cavity is connected to a second exhaust pipe, when in use, the user can condense and shape the aromatic hydrocarbons in the exhaust gas through the condensation mechanism and the cooling mechanism, at this time, the exhaust gas will enter the collection cylinder through the exhaust pipe, at this time, a part of the shaped aromatic hydrocarbons will remain in the collection cylinder, and the exhaust gas It will enter the condensation support and the conical cavity through the first exhaust pipe. At this time, the water in the water cavity can cool down the exhaust gas in the conical cavity again. At this time, some aromatic hydrocarbons in the exhaust gas will be re-formed and enter the collecting tube through the first exhaust pipe. After that, the exhaust gas will pass through the first exhaust pipe, the conical cavity and the second exhaust pipe into the purification pipe, and then enter the purification mechanism after being filtered through the activated carbon filter plate in the purification pipe. After that, the purification mechanism will purify the exhaust gas again, and then the exhaust gas will be discharged, thereby greatly improving the recovery efficiency and recovery effect of aromatic hydrocarbons in the exhaust gas, thereby improving the convenience of use.

[0010] As a preferred embodiment of the above technical solution, the collecting tube is fixedly connected to the inner bottom of the outer shell, the first exhaust pipe, the conical cavity and the second exhaust pipe are all connected, and the end of the second exhaust pipe away from the condensation support passes through the outer shell and is connected to the purification pipe.

[0011] As a preferred embodiment of the above technical solution, the cooling mechanism includes a water tank fixedly connected to the top of the outer shell, two first water pumps are fixedly connected to the outside of the water tank, the end of the first water pump away from the water tank is connected to the first water pipe, the outside of the water tank is also provided with a second water pipe and a second water pump, and the end of the second water pump away from the water tank is also provided with a return pipe.

[0012] As a preferred embodiment of the above technical solution, the two first water pumps are both installed on the top of the shell, and the two first water pumps are both fixedly connected with connecting pipes, the ends of the two connecting pipes away from the two first water pumps are connected to the water tank, the ends of the two first water pipes away from the two first water pumps pass through the shell and are fixedly connected to the condensation tank, the two first water pumps and the two first water pipes are symmetrically distributed, the second water pump is installed on the top of the shell, and the end of the second water pump away from the return pipe is fixedly connected with an access pipe, the end of the access pipe away from the second water pump is connected to the water tank, the end of the second water pipe away from the water tank is connected to the water cavity, the end of the return pipe away from the second water pump is connected to the water cavity, and a filling pipe is also provided on the top of the water tank.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model is provided with a shell, a condensing mechanism, a recovery mechanism and a cooling mechanism. When in use, a user can fill the water tank with cold water through the filling pipe on the top of the water tank, and then the cold water in the water tank is transported to the condensing box and the water cavity in the condensing support through the first water pipe and the second water pipe by two first water pumps and the second water pump. Then the hydrogen peroxide tail gas is connected to the air intake pipe. At this time, the user can adjust the air intake pipeline of the tail gas through the first electric ball valve and the second ball valve. Then the tail gas enters the first connecting pipe and the spiral pipe. When the tail gas enters the spiral pipe, the cold water in the condensing box will cool it. At this time, the tail gas and aromatic hydrocarbons will enter the collecting cylinder through the second electric ball valve and the air outlet pipe. At this time, a part of the formed aromatic hydrocarbons will remain in the collecting cylinder, and the tail gas will enter the condensing support and the conical cavity through the first exhaust pipe. At this time, the water in the water cavity can cool the tail gas. The exhaust gas is cooled again, and some of the aromatic hydrocarbons in the exhaust gas will be re-formed and enter the collecting cylinder through the first exhaust pipe. The exhaust gas will then pass through the first exhaust pipe, the conical cavity and the second exhaust pipe and enter the purification pipe. After that, it will be filtered through the activated carbon filter plate in the purification pipe and enter the purification mechanism. The purification mechanism will purify the exhaust gas again, and then the exhaust gas will be discharged. When one of the connecting pipes or the spiral pipes is damaged and needs to be repaired, the user can change the exhaust gas intake pipe through the first electric ball valve and the second electric ball valve to continue to recover the aromatic hydrocarbons in the exhaust gas, so that when the pipeline is damaged and needs to be repaired, the aromatic hydrocarbons in the exhaust gas can still be recovered, and the exhaust gas can also be condensed multiple times, thereby improving the recovery efficiency and recovery effect of the exhaust gas, and further improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a first-person perspective of a recovery device for recovering heavy aromatic hydrocarbons from hydrogen peroxide tail gas;

[0016] Figure 2 A schematic diagram of a second perspective of a recovery device for recovering heavy aromatic hydrocarbons from hydrogen peroxide tail gas;

[0017] Figure 3 It is a schematic top-sectional view of a local structure of a recovery device for recovering heavy aromatic hydrocarbons in hydrogen peroxide tail gas;

[0018] Figure 4 It is a schematic cross-sectional view of a local structure of a recovery device for recovering heavy aromatic hydrocarbons in hydrogen peroxide tail gas;

[0019] Figure 5 It is a schematic cross-sectional view of a local structure of a recovery device for recovering heavy aromatic hydrocarbons in hydrogen peroxide tail gas;

[0020] Figure 6 for Figure 4 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 7 for Figure 5Enlarged schematic diagram of the structure at point B in the middle.

[0022] In the figure: 1. outer shell; 2. purification pipe; 3. activated carbon filter plate; 4. purification mechanism; 11. air inlet pipe; 12. condensation box; 13. first electric ball valve; 14. first connecting pipe; 15. spiral pipe; 16. second connecting pipe; 17. second electric ball valve; 18. air outlet pipe; 21. collecting cylinder; 22. first exhaust pipe; 23. condensation support; 24. water cavity; 25. conical cavity; 26. second exhaust pipe; 31. water tank; 32. first water pump; 33. first water pipe; 34. second water pipe; 35. second water pump; 36. return pipe. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] Embodiment 1

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the utility model provides a technical solution: a recovery device for recovering heavy aromatic hydrocarbons from hydrogen peroxide tail gas, comprising a shell 1, a condensing mechanism for condensing and forming heavy aromatic hydrocarbons and a recovery mechanism for recovering heavy aromatic hydrocarbons are arranged on the inner side of the shell 1, a cooling mechanism for cooling the hydrogen peroxide tail gas is also arranged on the top of the shell 1, a purification pipe 2 is also arranged on the top of the shell 1, a plurality of activated carbon filter plates 3 distributed at equal intervals are arranged on the inner side of the purification pipe 2, a purification mechanism 4 for purifying the hydrogen peroxide tail gas is connected to the outer end of the purification pipe 2, the condensing mechanism comprises an air inlet pipe 11 fixedly connected to the outer side of the shell 1, and a condensing box 12 fixedly connected to the inner bottom of the shell 1, and the outer side of the air inlet pipe 11 is connected to a first The electric ball valve 13, the end of the first electric ball valve 13 away from the air inlet pipe 11 is fixedly connected to the first connecting pipe 14, the end of the first connecting pipe 14 away from the first electric ball valve 13 passes through the condensation tank 12 and is fixedly connected to the spiral tube 15, the end of the spiral tube 15 away from the first connecting pipe 14 passes through the condensation tank 12 and is fixedly connected to the second connecting pipe 16, the outside of the second connecting pipe 16 is fixedly connected to the second electric ball valve 17, the end of the second electric ball valve 17 away from the second connecting pipe 16 is connected to the outlet pipe 18, the first electric ball valve 13 is installed at the inner bottom of the shell 1, the first connecting pipe 14, the spiral tube 15 and the second connecting pipe 16 are each two, one end of the two first connecting pipes 14 are fixedly connected to the first electric ball valve 13, the two spiral tubes 15 One end is respectively connected with one end of the two first connecting pipes 14 away from the first electric ball valve 13, and the other ends of the two spiral tubes 15 pass through the condensation tank 12 and are connected with the two second connecting pipes 16, and the ends of the two second connecting pipes 16 away from the spiral tubes 15 are connected with the second electric ball valve 17, and the second electric ball valve 17 is installed on the top of the condensation tank 12. The cooling mechanism includes a water tank 31 fixedly connected to the top of the shell 1, and two first water pumps 32 are fixedly connected to the outside of the water tank 31. The end of the first water pump 32 away from the water tank 31 is connected to the first water pipe 33, and the outside of the water tank 31 is also provided with a second water pipe 34 and a second water pump 35. The end of the second water pump 35 away from the water tank 31 is also provided with a return pipe 36, and the two first water pumps 32 are installed It is installed on the top of the shell 1, and the two first water pumps 32 are fixedly connected with connecting pipes, and the ends of the two connecting pipes away from the two first water pumps 32 are connected to the water tank 31, and the ends of the two first water pipes 33 away from the two first water pumps 32 pass through the shell 1 and are fixedly connected to the condensation tank 12, the two first water pumps 32 and the two first water pipes 33 are symmetrically distributed, the second water pump 35 is installed on the top of the shell 1, and the end of the second water pump 35 away from the return pipe 36 is fixedly connected with the access pipe, the end of the access pipe away from the second water pump 35 is connected to the water tank 31, the end of the second water pipe 34 away from the water tank 31 is connected to the water cavity 24, the end of the return pipe 36 away from the second water pump 35 is connected to the water cavity 24, and a filling pipe is also provided on the top of the water tank 31.

[0026] Through the above technical solution, when in use, the user can fill the water tank 31 with cold water through the filling pipe on the top of the water tank 31, and then the cold water in the water tank 31 is transported to the condenser 12 and the water cavity 24 in the condensation support 23 through the first water pipe 33 and the second water pipe 34 by the two first water pumps 32 and the second water pump 35, and then the hydrogen peroxide tail gas is connected to the intake pipe 11. At this time, the user can adjust the intake duct of the tail gas through the first electric ball valve 13 and the second electric ball valve 17, and then the tail gas enters the first connecting pipe 14 and the spiral tube 15. When the tail gas enters the spiral tube 15, the cold water in the condenser 12 will cool it down and shape it. When the spiral tube 15 or the first connecting pipe 14 is damaged and needs to be repaired, the user can change the intake duct of the tail gas through the first electric ball valve 13 and the second electric ball valve 17 to continue to recover the aromatics in the tail gas, thereby achieving the effect of improving the recovery efficiency of the aromatics, thereby improving the convenience of use.

[0027] Embodiment 2

[0028] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, the utility model provides a technical solution: a recovery device for recovering heavy aromatic hydrocarbons from hydrogen peroxide tail gas, comprising a shell 1, a condensing mechanism for condensing and forming heavy aromatic hydrocarbons and a recovery mechanism for recovering heavy aromatic hydrocarbons are arranged on the inner side of the shell 1, a cooling mechanism for cooling the hydrogen peroxide tail gas is also arranged on the top of the shell 1, a purification pipe 2 is also arranged on the top of the shell 1, a plurality of activated carbon filter plates 3 distributed at equal intervals are arranged on the inner side of the purification pipe 2, a purification mechanism 4 for purifying the hydrogen peroxide tail gas is connected to the outer end of the purification pipe 2, and the recovery mechanism includes a cooling mechanism connected to the outlet pipe 1. 8 is fixedly connected to the collecting cylinder 21, the top of the collecting cylinder 21 is fixedly connected with a first exhaust pipe 22, the end of the first exhaust pipe 22 away from the collecting cylinder 21 is fixedly connected with a condensation support 23, the inner side of the condensation support 23 is provided with a water cavity 24, the inner side of the condensation support 23 is provided with a conical cavity 25, the top of the conical cavity 25 is connected with a second exhaust pipe 26, the collecting cylinder 21 is fixedly connected to the inner bottom of the outer shell 1, the first exhaust pipe 22, the conical cavity 25 and the second exhaust pipe 26 are all connected, and the end of the second exhaust pipe 26 away from the condensation support 23 passes through the outer shell 1 and is connected to the purification pipe 2.

[0029] Through the above technical scheme, when in use, the user can condense and shape the aromatic hydrocarbons in the exhaust gas through the condensation mechanism and the cooling mechanism. At this time, the exhaust gas will enter the collecting tube 21 through the exhaust pipe 18. At this time, a part of the shaped aromatic hydrocarbons will remain in the collecting tube 21, and the exhaust gas will enter the condensation support 23 and the conical cavity 25 through the first exhaust pipe 22. At this time, the water in the water cavity 24 can cool the exhaust gas in the conical cavity 25 again. At this time, part of the aromatic hydrocarbons in the exhaust gas will be re-shaped and enter the collecting tube 21 through the first exhaust pipe 22. After that, the exhaust gas will pass through the first exhaust pipe 22, the conical cavity 25 and the second exhaust pipe 26 and then enter the purification pipe 2. After that, it will be filtered through the activated carbon filter plate 3 in the purification pipe 2 and then enter the purification mechanism 4. After that, the purification mechanism 4 will purify the exhaust gas again, and then the exhaust gas will be discharged, thereby greatly improving the recovery efficiency and recovery effect of the aromatic hydrocarbons in the exhaust gas, thereby improving the convenience of use.

[0030] It should be noted that the purification mechanism 4 is composed of equipment or devices that can purify hydrogen peroxide tail gas in the technology, which belongs to the existing technical structure, so it will not be elaborated on in detail.

[0031] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A device for recovering heavy aromatic hydrocarbons from hydrogen peroxide tail gas, comprising a housing (1), characterized in that: The inner side of the shell (1) is provided with a condensing mechanism for condensing and forming heavy aromatics and a recovery mechanism for recovering heavy aromatics, the top of the shell (1) is also provided with a cooling mechanism for cooling hydrogen peroxide tail gas, the top of the shell (1) is also provided with a purification pipe (2), the inner side of the purification pipe (2) is provided with a plurality of activated carbon filter plates (3) distributed at equal intervals, and the outer end of the purification pipe (2) is connected with a purification mechanism (4) for purifying hydrogen peroxide tail gas.

2. A recovery device for recovering heavy aromatic hydrocarbons from hydrogen peroxide tail gas according to claim 1, characterized in that: The condensing mechanism comprises an air inlet pipe (11) fixedly connected to the outside of the outer shell (1), and a condensing box (12) fixedly connected to the bottom of the inner side of the outer shell (1); the outside of the air inlet pipe (11) is connected to a first electric ball valve (13); the end of the first electric ball valve (13) away from the air inlet pipe (11) is fixedly connected to a first connecting pipe (14); the end of the first connecting pipe (14) away from the first electric ball valve (13) passes through the condensing box (12) and is fixedly connected to a spiral tube (15); the end of the spiral tube (15) away from the first connecting pipe (14) passes through the condensing box (12) and is fixedly connected to a second connecting pipe (16); the outside of the second connecting pipe (16) is fixedly connected to a second electric ball valve (17); the end of the second electric ball valve (17) away from the second connecting pipe (16) is connected to an air outlet pipe (18).

3. A recovery device for recovering heavy aromatic hydrocarbons from hydrogen peroxide tail gas according to claim 2, characterized in that: The first electric ball valve (13) is installed at the inner bottom of the housing (1); there are two first connecting pipes (14), two spiral pipes (15) and two second connecting pipes (16); one end of the two first connecting pipes (14) is fixedly connected to the first electric ball valve (13); one end of the two spiral pipes (15) is respectively connected to one end of the two first connecting pipes (14) away from the first electric ball valve (13); the other ends of the two spiral pipes (15) pass through the condensation box (12) and are connected to the two second connecting pipes (16); one end of the two second connecting pipes (16) away from the spiral pipes (15) is connected to the second electric ball valve (17); and the second electric ball valve (17) is installed on the top of the condensation box (12).

4. A recovery device for recovering heavy aromatic hydrocarbons from hydrogen peroxide tail gas according to claim 2, characterized in that: The recovery mechanism comprises a collecting cylinder (21) fixedly connected to the exhaust pipe (18), the top of the collecting cylinder (21) is fixedly connected to a first exhaust pipe (22), the end of the first exhaust pipe (22) away from the collecting cylinder (21) is fixedly connected to a condensation support (23), a water cavity (24) is provided on the inner side of the condensation support (23), a conical cavity (25) is provided on the inner side of the condensation support (23), and the top of the conical cavity (25) is connected to a second exhaust pipe (26).

5. A recovery device for recovering heavy aromatic hydrocarbons from hydrogen peroxide tail gas according to claim 4, characterized in that: The collecting tube (21) is fixedly connected to the inner bottom of the outer shell (1); the first exhaust pipe (22), the conical cavity (25) and the second exhaust pipe (26) are all connected; and one end of the second exhaust pipe (26) away from the condensation support (23) passes through the outer shell (1) and is connected to the purification pipe (2).

6. A recovery device for recovering heavy aromatic hydrocarbons from hydrogen peroxide tail gas according to claim 1, characterized in that: The cooling mechanism comprises a water tank (31) fixedly connected to the top of the housing (1); two first water pumps (32) are fixedly connected to the outside of the water tank (31); one end of the first water pump (32) away from the water tank (31) is connected to a first water pipe (33); a second water pipe (34) and a second water pump (35) are also provided on the outside of the water tank (31); and a return pipe (36) is also provided at one end of the second water pump (35) away from the water tank (31).

7. A recovery device for recovering heavy aromatic hydrocarbons from hydrogen peroxide tail gas according to claim 6, characterized in that: The two first water pumps (32) are both mounted on the top of the housing (1), and the two first water pumps (32) are both fixedly connected to a connecting pipe, and one end of the two connecting pipes away from the two first water pumps (32) is connected to the water tank (31), and one end of the two first water pipes (33) away from the two first water pumps (32) passes through the housing (1) and is fixedly connected to the condensation tank (12), and the two first water pumps (32) and the two first water pipes (33) are symmetrically distributed, the second water pump (35) is mounted on the top of the housing (1), and one end of the second water pump (35) away from the return pipe (36) is fixedly connected to an access pipe, and one end of the access pipe away from the second water pump (35) is connected to the water tank (31), one end of the second water pipe (34) away from the water tank (31) is connected to the water cavity (24), and one end of the return pipe (36) away from the second water pump (35) is connected to the water cavity (24), and a filling pipe is also provided on the top of the water tank (31).

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