Safe blowdown device for tunnel air purification

By setting up a fixture, activated carbon particles, filter plates and agitating rods in the tunnel sewage discharge device, the problems of clogging of filter nets of sewage discharge devices and stacking of activated carbon in the prior art are solved, and more efficient sewage purification and longer service life are achieved.

CN222861226UActive Publication Date: 2025-05-13CHONGQING JIMA HVAC EQUIP DEV CO LTD
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Patent Information

Application Number
CN202421766972.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-24
Publication Date
2025-05-13
Estimated Expiration
2034-07-24

AI Technical Summary

Technical Problem

Existing tunnel sewage discharge devices are prone to filter clogging and activated carbon accumulation after long-term use, resulting in a decrease in filtration efficiency and adsorption purification effect.

Method used

A safe sewage discharge device including a water storage tank, a fixing rack, activated carbon particles, a filter plate and agitating rod is designed. By providing activated carbon particles and filter plates between the fixing frame and the water storage tank, the activated carbon is prevented from accumulation and blockage of the filter plates through the scraper.

Benefits of technology

It effectively prevents the dissolved gas pollutants in the sewage from being released into the atmosphere, improves the purification efficiency and purification effect of the sewage, and extends the service life of the device.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model provides a safe blowdown device for tunnel air purification, belongs to the technical field of tunnel blowdown, and aims to solve the problems that a filter screen is possibly blocked after being used for a long time, so that the filtering efficiency of the blowdown device is reduced; the activated carbon is mutually accumulated, so that the adsorption area of the activated carbon is reduced, and the adsorption purification effect is reduced. Comprising a water storage tank; a tank cover structure is fixedly arranged at the top of the water storage tank, and an auxiliary assembly is fixedly arranged on the outer side of the top of the water storage tank; a purification assembly is fixedly arranged in the water storage tank, and a drainage structure is fixedly arranged at the other end of the water outlet pipe; by arranging a connecting frame, a scraping plate and a stirring rod, impurities accumulated on the inner side of the filter plate can be scraped by the scraping plate, and the filter plate can be prevented from being blocked; the activated carbon particles can be stirred by utilizing a stirring rod, so that mutual accumulation of the activated carbon can be prevented; therefore, the purification efficiency and the purification effect on the sewage can be ensured.
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Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel sewage discharge, and more specifically, particularly relates to a safe sewage discharge device for tunnel air purification. Background Art

[0002] Tunnels are engineering structures buried in the ground. During the construction and use of tunnels, water may accumulate in the tunnel due to factors such as high groundwater levels, rainwater intrusion, and complex geological environment. The accumulated water mixed with dirt in the tunnel will form sewage, and the gaseous pollutants dissolved in the sewage will be released into the atmosphere under certain conditions, causing a certain degree of impact on the tunnel air. As a result, the sewage in the tunnel needs to be discharged and treated.

[0003] Existing sewage discharge devices usually use filters to isolate dirt in sewage when in use, and the filters may become clogged after long-term use, resulting in a decrease in the filtration efficiency of the sewage discharge device, resulting in a decrease in drainage efficiency; and existing sewage discharge devices usually use activated carbon to adsorb and purify pollutants in sewage, and currently when adsorbing with activated carbon, the activated carbon is usually set to a static state, resulting in the accumulation of activated carbons, which may reduce the adsorption area of ​​the activated carbons, and may cause a decrease in the adsorption and purification effect. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a safe sewage discharge device for tunnel air purification, so as to solve the problem that the filter net proposed in the above background technology may be blocked after long-term use, resulting in a decrease in the filtration efficiency of the sewage discharge device; and the activated carbons are piled up with each other, resulting in a decrease in the adsorption area of ​​the activated carbon and a decrease in the adsorption purification effect.

[0005] The utility model is a safe sewage discharge device for tunnel air purification, which is achieved by the following specific technical means:

[0006] A safe sewage discharge device for tunnel air purification, comprising a water tank; a water outlet pipe is fixedly arranged at the bottom of one side of the water tank, a filter screen is fixedly arranged inside one end of the water outlet pipe, and the inner side of the bottom of the water tank is arranged in a conical structure; a fixed frame is fixedly arranged inside the water tank, a filter screen is fixedly installed inside the fixed frame, and activated carbon particles are filled between the inside of the fixed frame and the bottom of the inner side of the water tank; a driving shaft is rotatably arranged between the inside of the fixed frame and the inside of the bottom side of the water tank, and a hexagonal hole is opened at the top of the driving shaft; the driving shaft is fixedly arranged at the shaft end of a motor device, and the motor device is fixedly arranged at the bottom of the water tank; L-shaped stirring rods are fixedly arranged on the outside of the driving shaft in a ring array, and a sealing groove is opened at the top of the water tank;

[0007] A tank cover structure is fixedly arranged on the top of the water tank, and an auxiliary component is fixedly arranged on the outer side of the top of the water tank; a purification component is fixedly arranged inside the water tank, and a drainage structure is fixedly arranged on the other end of the water outlet pipe; the tank cover structure includes: a top cover, a sealing strip, a vertical axis and a fixing hook; the top cover is movably arranged on the top of the water tank; the sealing strip is fixedly arranged on the bottom of the top cover, and the sealing strip is movably arranged inside the sealing groove; the top end of the vertical axis is rotatably arranged inside the top cover, and a hexagonal hole is opened inside the bottom end of the vertical axis, and the vertical axis and the driving shaft are located on the same axis; the fixing hook is fixedly arranged on the outer side of the top cover.

[0008] Furthermore, the drainage structure includes: a drainage pipe, a rotating shaft and blades; the drainage pipe is fixedly arranged at the end of the water outlet pipe; the rotating shaft is rotatably arranged inside the drainage pipe, and the rotating shaft is fixedly arranged at the shaft end of the motor device, and the motor device is fixedly arranged on the outside of the drainage pipe; the blades are fixedly arranged on the outside of the rotating shaft in a circular array, and the outside of the blades are in contact with the inner wall of the drainage pipe.

[0009] Furthermore, the tank cover structure also includes: a water inlet pipe, a buzzer alarm, a control module and a hydraulic sensor; the water inlet pipe is fixedly arranged inside the top cover; the buzzer alarm is fixedly arranged on the top of the top cover; the control module is fixedly arranged on the top of the top cover, and the control module and the buzzer alarm are electrically connected; the hydraulic sensor is fixedly arranged on the inside of the top cover, and the hydraulic sensor and the control module are electrically connected.

[0010] Furthermore, the auxiliary component includes: an auxiliary seat, a handle, a guide rod, a sliding seat and a tightening ring; the auxiliary seat is fixedly arranged on the outside of the water tank; one end of the handle is rotatably arranged on the inside of the auxiliary seat; the guide rod is fixedly arranged inside the handle; the sliding seat is slidably arranged between the inside of the handle and the outside of the guide rod, and a spring member is arranged between the top of the sliding seat and the top of the guide rod; the tightening ring is rotatably arranged on the outside of the sliding seat, and the top of the tightening ring is movably arranged on the inside of the fixed hook.

[0011] Furthermore, the purification component includes: a limit frame, a purification frame, a filter plate, a connecting shaft and a stirring plate; the limit frame is movably arranged on the top of the water storage tank; the purification frame is fixedly arranged on the inner side of the limit frame, and the purification frame is located on the inner side of the water storage tank; the filter plate is fixedly arranged on the inner side of the purification frame; the connecting shaft is rotatably arranged inside the bottom side of the purification frame, and the connecting shaft is located between the vertical shaft and the driving shaft; both ends of the connecting shaft are arranged as hexagonal structures, and the hexagonal structures at both ends of the connecting shaft are respectively movably arranged on the inner sides of the hexagonal holes inside the vertical shaft and the driving shaft; the stirring plate is fixedly arranged on the outer side of the connecting shaft.

[0012] Furthermore, the purification component also includes: a connecting frame and a scraper; the connecting frame is fixedly arranged on the outside of the connecting shaft; the scraper is fixedly arranged on the outside of the connecting frame, and the outside of the scraper is in contact with the inside of the filter plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, by arranging activated carbon particles and filter plates between the fixing frame and the water storage tank, impurities and pollution in the tunnel sewage can be filtered, adsorbed and purified before being discharged; thus, the gaseous pollutants dissolved in the sewage can be prevented from being released into the atmosphere and affecting the air quality.

[0015] 2. In the utility model, by providing a connecting frame, a scraper and a stirring rod, the scraper can scrape off the impurities accumulated on the inner side of the filter plate, which is beneficial to prevent the filter plate from being blocked; and the stirring rod can be used to stir the activated carbon particles, which is beneficial to prevent the activated carbon from piling up on each other; thereby ensuring the purification efficiency and purification effect of the sewage.

[0016] 3. In the present invention, by providing auxiliary components and fixing hooks, the top cover can be easily and conveniently disassembled and installed; and the purification frame and the filter plate can be conveniently removed, which is beneficial to cleaning the impurities filtered out by the filter plate; by providing a connecting shaft and a stirring shaft, the sewage can be centrifuged, and the filtering speed of the sewage can be accelerated, which is beneficial to improving the sewage discharge effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic cross-sectional structure diagram of a water storage tank of the utility model.

[0019] Figure 3 It is a schematic cross-sectional structure diagram of a water storage tank of the utility model.

[0020] Figure 4 It is a schematic diagram of the overall structure of the purification component of the utility model.

[0021] Figure 5 It is a structural schematic diagram of a scraper and a connecting frame of the utility model.

[0022] Figure 6 It is a schematic diagram of the lower surface structure of the top cover of the utility model.

[0023] Figure 7 It is a structural schematic diagram of the drainage structure of the utility model.

[0024] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0025] 1. Water storage tank; 101. Water outlet pipe; 102. Fixed frame; 103. Drive shaft; 104. Stirring rod; 105. Sealing groove;

[0026] 2. Drainage structure; 201. Drain pipe; 202. Rotating shaft; 203. Blade;

[0027] 3. Tank cover structure; 301. Top cover; 302. Water inlet pipe; 303. Buzzer alarm; 304. Control module; 305. Hydraulic sensor; 306. Sealing strip; 307. Vertical axis; 308. Fixing hook;

[0028] 4. Auxiliary components; 401. Auxiliary seat; 402. Handle; 403. Guide rod; 404. Sliding seat; 405. Tightening ring;

[0029] 5. Purification component; 501. Limiting frame; 502. Purification frame; 503. Filter plate; 504. Connecting shaft; 505. Stirring plate; 506. Connecting frame; 507. Scraper. DETAILED DESCRIPTION

[0030] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples.

[0031] Embodiment 1:

[0032] As attached Figure 1 To Attachment Figure 7 As shown:

[0033] The utility model provides a safe sewage discharge device for tunnel air purification, comprising a water storage tank 1; a water outlet pipe 101 is fixedly arranged at the bottom of one side of the water storage tank 1, and a filter screen is fixedly arranged on the inner side of one end of the water outlet pipe 101, and the inner side of the bottom of the water storage tank 1 is arranged in a conical structure; a fixed frame 102 is fixedly arranged inside the water storage tank 1, and a filter screen is fixedly installed inside the fixed frame 102, and activated carbon particles are filled between the inside of the fixed frame 102 and the inner bottom of the water storage tank 1; a driving shaft 103 is rotatably arranged between the inside of the fixed frame 102 and the inside of the bottom side of the water storage tank 1, and the driving shaft 103 A hexagonal hole is provided at the top; a driving shaft 103 is fixedly arranged at the shaft end of the motor device, and the motor device is fixedly arranged at the bottom of the water storage tank 1; an L-shaped stirring rod 104 is fixedly arranged in a circular array on the outside of the driving shaft 103, and a sealing groove 105 is provided at the top of the water storage tank 1; its specific function is: through the activated carbon particles and the filter plate 503 provided between the fixing frame 102 and the water storage tank 1, impurities and pollution in the tunnel sewage can be filtered, adsorbed and purified before being discharged; thereby, the gaseous pollutants dissolved in the sewage can be prevented from being released into the atmosphere and affecting the air quality;

[0034] In the embodiment of the present disclosure, a tank cover structure 3 is fixedly provided on the top of the water storage tank 1, and an auxiliary component 4 is fixedly provided on the outer side of the top of the water storage tank 1; a purification component 5 is fixedly provided inside the water storage tank 1, and a drainage structure 2 is fixedly provided at the other end of the water outlet pipe 101; the tank cover structure 3 includes: a top cover 301, a sealing strip 306, a vertical shaft 307 and a fixing hook 308; the top cover 301 is movably provided on the top of the water storage tank 1; the sealing strip 306 is fixedly provided on the bottom of the top cover 301, and the sealing strip 306 is movably provided inside the sealing groove 105; the vertical shaft 307 The top end is rotatably arranged inside the top cover 301, and a hexagonal hole is opened inside the bottom end of the vertical axis 307, and the vertical axis 307 and the driving shaft 103 are located on the same axis; the fixing hook 308 is fixedly arranged on the outside of the top cover 301; the tank cover structure 3 also includes: a water inlet pipe 302, a buzzer alarm 303, a control module 304 and a hydraulic sensor 305; the water inlet pipe 302 is fixedly arranged inside the top cover 301; the buzzer alarm 303 is fixedly arranged on the top of the top cover 301; the control module 304 is fixedly arranged on the top of the top cover 301, and the control module 304 is electrically connected to the buzzer alarm 303; the hydraulic sensor 305 is fixedly arranged on the inner side of the top cover 301, and the hydraulic sensor 305 is electrically connected to the control module 304; the auxiliary component 4 includes: an auxiliary seat 401, a handle 402, a guide rod 403, a sliding seat 404 and a tightening ring 405; the auxiliary seat 401 is fixedly arranged on the outer side of the water storage tank 1; one end of the handle 402 is rotatably arranged on the inner side of the auxiliary seat 401; the guide rod 403 is fixedly arranged inside the handle 402; the sliding seat 404 is slidably arranged It is placed between the inside of the handle 402 and the outside of the guide rod 403, and a spring member is provided between the top of the sliding seat 404 and the top of the guide rod 403; the tightening ring 405 is rotatably provided on the outside of the sliding seat 404, and the top of the tightening ring 405 is movably provided on the inside of the fixing hook 308; its specific function is: by providing the auxiliary component 4 and the fixing hook 308, the top cover 301 can be easily and conveniently disassembled and installed; and then the purification frame 502 and the filter plate 503 can be conveniently removed, which is conducive to cleaning the impurities filtered out by the filter plate 503.

[0035] Embodiment 2:

[0036] As attached Figure 1 With attached Figure 7As shown: On the basis of embodiment 1, the drainage structure 2 includes: a drainage pipe 201, a rotating shaft 202 and blades 203; the drainage pipe 201 is fixedly arranged at the end of the water outlet pipe 101; the rotating shaft 202 is rotatably arranged inside the drainage pipe 201, and the rotating shaft 202 is fixedly arranged on the shaft end of the motor device, and the motor device is fixedly arranged on the outside of the drainage pipe 201; the blades 203 are fixedly arranged on the outside of the rotating shaft 202 in a circular array, and the outer side of the blades 203 is in contact with the inner wall of the drainage pipe 201; its specific function is: by providing the rotating shaft 202 and the blades 203, the water discharge speed can be accelerated when the rotating shaft 202 drives the blades 203 to rotate.

[0037] Embodiment three:

[0038] As attached Figure 2 To Attachment Figure 5 As shown: On the basis of the first and second embodiments, the purification component 5 includes: a limiting frame 501, a purification frame 502, a filter plate 503, a connecting shaft 504, a stirring plate 505, a connecting frame 506 and a scraper 507; the limiting frame 501 is movably arranged on the top of the water storage tank 1; the purification frame 502 is fixedly arranged on the inner side of the limiting frame 501, and the purification frame 502 is located on the inner side of the water storage tank 1; the filter plate 503 is fixedly arranged on the inner side of the purification frame 502; the connecting shaft 504 is rotatably arranged inside the bottom side of the purification frame 502, and the connecting shaft 504 is located between the vertical axis 307 and the driving shaft 103; both ends of the connecting shaft 504 are set to a hexagonal structure, and the hexagonal structures at both ends of the connecting shaft 504 The structure is movably arranged on the inner side of the hexagonal hole inside the vertical axis 307 and the driving axis 103; the stirring plate 505 is fixedly arranged on the outer side of the connecting axis 504; the connecting frame 506 is fixedly arranged on the outer side of the connecting axis 504; the scraper 507 is fixedly arranged on the outer side of the connecting frame 506, and the outer side of the scraper 507 is in contact with the inner side of the filter plate 503; its specific functions are: by providing the connecting frame 506, the scraper 507 and the stirring rod 104, the scraper 507 can scrape off the impurities accumulated on the inner side of the filter plate 503, which is beneficial to prevent the filter plate 503 from being blocked; and the stirring rod 104 can be used to stir the activated carbon particles, which is beneficial to prevent the activated carbon from piling up on each other.

[0039] The specific usage and function of this embodiment are as follows:

[0040] In the utility model, when in use, sewage is pumped into the inner side of the purification frame 502 through the water inlet pipe 302, solid impurities in the sewage are filtered by the filter plate 503, and pollutants in the sewage are adsorbed by the activated carbon particles between the bottom of the fixed frame 102 and the inside of the water storage tank 1; then the sewage is discharged through the water outlet pipe 101; the motor device is started to drive the rotating shaft 202 to rotate, and the rotating shaft 202 accelerates the discharge speed of water through the blades 203; the motor device is started to drive the driving shaft 103 to rotate, and the driving shaft 103 is driven by the stirring rod 104 The activated carbon particles are stirred; the driving shaft 103 drives the connecting shaft 504 to rotate through the internal hexagonal hole and the hexagonal structure at the end of the connecting shaft 504, and the connecting shaft 504 drives the sewage to be centrifuged through the stirring plate 505, so that the sewage quickly passes through the filter plate 503, thereby accelerating the filtration speed of the sewage; at the same time, the connecting shaft 504 drives the scraper 507 to rotate through the connecting frame 506, and the scraper 507 scrapes off the impurities accumulated on the inner side of the filter plate 503, which is helpful to prevent the filter plate 503 from being blocked; when there are too many impurities inside the purification frame 502 , the hydraulic pressure inside the purification rack 502 increases, the hydraulic sensor 305 transmits the hydraulic signal to the control module 304, and the control module 304 controls the buzzer alarm 303 to warn, so that the staff can find the situation in time; the handle 402 can be bent upward so that the sliding seat 404 no longer applies downward pressure to the tension ring 405; then the tension ring 405 is removed from the inside of the fixing hook 308, so that the top cover 301 is removed; then the purification rack 502 can be taken out and the impurities inside it can be cleaned; when the cleaning is completed, the connecting shaft 504 The bottom hexagonal structure is slid into the hexagonal hole inside the driving shaft 103; the bottom of the limit frame 501 is fitted with the top of the water tank 1; the top cover 301 is placed on the top of the water tank 1, and the vertical axis 307 is slid onto the outside of the top of the connecting axis 504; then the tensioning ring 405 is placed on the inside of the fixing hook 308, and the handle 402 is pressed down to make the handle 402 in a vertical state; and then the sliding seat 404 applies downward pressure to the tensioning ring 405 through the spring member, so that the tensioning ring 405 fixes the top cover 301 through the fixing hook 308.

Claims

1. A safe sewage discharge device for tunnel air purification, characterized in that: include: A water storage tank (1); a water outlet pipe (101) is fixedly arranged at the bottom of one side of the water storage tank (1), and a filter is fixedly arranged on the inner side of one end of the water outlet pipe (101), and the inner side of the bottom of the water storage tank (1) is arranged in a conical structure; a fixed frame (102) is fixedly arranged inside the water storage tank (1), and a filter is fixedly installed inside the fixed frame (102), and activated carbon particles are filled between the inside of the fixed frame (102) and the inner bottom of the water storage tank (1); a drive shaft (103) is rotatably arranged between the inside of the fixed frame (102) and the inside of the bottom of the water storage tank (1), and a hexagonal hole is provided at the top of the drive shaft (103); the drive shaft (103) is fixedly arranged at the shaft end of a motor device, and the motor device is fixedly arranged at the bottom of the water storage tank (1); L-shaped stirring rods (104) are fixedly arranged on the outer side of the drive shaft (103) in a ring array, and a sealing groove (105) is provided at the top of the water storage tank (1); The water storage tank (1) is fixedly provided with a tank cover structure (3) on the top, and an auxiliary component (4) is fixedly provided on the outer side of the top of the water storage tank (1); a purification component (5) is fixedly provided inside the water storage tank (1), and a drainage structure (2) is fixedly provided at the other end of the water outlet pipe (101); the tank cover structure (3) comprises: a top cover (301), a sealing strip (306), a vertical shaft (307) and a fixing hook (308); The top cover (301) is movably arranged on the top of the water storage tank (1); the sealing strip (306) is fixedly arranged on the bottom of the top cover (301), and the sealing strip (306) is movably arranged inside the sealing groove (105); the top end of the vertical shaft (307) is rotatably arranged inside the top cover (301), and a hexagonal hole is opened inside the bottom end of the vertical shaft (307), and the vertical shaft (307) and the driving shaft (103) are located on the same axis; and the fixing hook (308) is fixedly arranged on the outside of the top cover (301).

2. A safe sewage discharge device for tunnel air purification according to claim 1, characterized in that: The drainage structure (2) comprises: a drainage pipe (201), a rotating shaft (202) and blades (203); the drainage pipe (201) is fixedly arranged at the end of the water outlet pipe (101); the rotating shaft (202) is rotatably arranged inside the drainage pipe (201), and the rotating shaft (202) is fixedly arranged at the shaft end of a motor device, and the motor device is fixedly arranged outside the drainage pipe (201); the blades (203) are fixedly arranged outside the rotating shaft (202) in an annular array, and the outer sides of the blades (203) are in contact with the inner wall of the drainage pipe (201).

3. The safe sewage discharge device for tunnel air purification according to claim 1 is characterized in that: The tank cover structure (3) further comprises: a water inlet pipe (302), a buzzer alarm (303), a control module (304) and a hydraulic sensor (305); the water inlet pipe (302) is fixedly arranged inside the top cover (301); the buzzer alarm (303) is fixedly arranged on the top of the top cover (301); the control module (304) is fixedly arranged on the top of the top cover (301), and the control module (304) and the buzzer alarm (303) are electrically connected; the hydraulic sensor (305) is fixedly arranged on the inner side of the top cover (301), and the hydraulic sensor (305) and the control module (304) are electrically connected.

4. The safe sewage discharge device for tunnel air purification according to claim 1 is characterized in that: The auxiliary component (4) comprises: an auxiliary seat (401), a handle (402), a guide rod (403), a sliding seat (404) and a tensioning ring (405); the auxiliary seat (401) is fixedly arranged on the outside of the water storage tank (1); one end of the handle (402) is rotatably arranged on the inside of the auxiliary seat (401); the guide rod (403) is fixedly arranged inside the handle (402); the sliding seat (404) is slidably arranged between the inside of the handle (402) and the outside of the guide rod (403), and a spring member is arranged between the top of the sliding seat (404) and the top of the guide rod (403); the tensioning ring (405) is rotatably arranged on the outside of the sliding seat (404), and the top of the tensioning ring (405) is movably arranged on the inside of the fixing hook (308).

5. The safe sewage discharge device for tunnel air purification according to claim 1 is characterized in that: The purification component (5) comprises: a limiting frame (501), a purification frame (502), a filter plate (503), a connecting shaft (504) and a stirring plate (505); the limiting frame (501) is movably arranged on the top of the water storage tank (1); the purification frame (502) is fixedly arranged on the inner side of the limiting frame (501), and the purification frame (502) is located on the inner side of the water storage tank (1); the filter plate (503) is fixedly arranged on the inner side of the purification frame (502); The connecting shaft (504) is rotatably arranged inside the bottom side of the purification frame (502), and the connecting shaft (504) is located between the vertical shaft (307) and the driving shaft (103); both ends of the connecting shaft (504) are arranged as hexagonal structures, and the hexagonal structures at both ends of the connecting shaft (504) are movably arranged inside the hexagonal holes inside the vertical shaft (307) and the driving shaft (103); the stirring plate (505) is fixedly arranged outside the connecting shaft (504).

6. A safe sewage discharge device for tunnel air purification according to claim 5, characterized in that: The purification component (5) further comprises: a connecting frame (506) and a scraper (507); the connecting frame (506) is fixedly arranged on the outside of the connecting shaft (504); the scraper (507) is fixedly arranged on the outside of the connecting frame (506), and the outside of the scraper (507) is in contact with the inside of the filter plate (503).