A repairing device for environment-friendly sewer pipe

Abstract

The application relates to the field of sewer pipe repairing, in particular to a repairing device for environment-friendly sewer pipes, which comprises a repairing floating tube and a solidifying floating tube connected with each other, and the surfaces of the repairing floating tube and the solidifying floating tube are provided with repairing air bags and solidifying air bags. The repairing and solidifying operations can be completed in the pipes, the repairing space is isolated through the air bags, the water discharge workload is reduced, the water discharge time is shortened, and the resin effect is ensured through the completion of the glue coating operation in the isolated space.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of repairing drainage pipes, in particular to a repairing device for environment-friendly drainage pipes. BACKGROUND

[0002] Environment-friendly drainage pipes play an important role in protecting the environment, urban drainage and flood control, promoting the rational use of water resources, and improving the quality of urban environment. Therefore, attention should be paid to the construction, maintenance and management of environment-friendly drainage pipes to ensure that they can better serve the city and the environment.

[0003] Environment-friendly drainage pipes often use steel belt corrugated pipes, which are pipes formed by embedding steel belts into the pipe wall through special technology with high-density polyethylene (HDPE) as the base material. It not only inherits the corrosion resistance, wear resistance and aging resistance of HDPE material, but also greatly improves its compressive strength and ring stiffness due to the addition of steel belts. This makes the steel belt corrugated pipe perform well in terms of external pressure and foundation settlement, and is very suitable for use in environment-friendly drainage systems.

[0004] During use, the steel belt corrugated pipe has the problem of pipe top subsidence (collapse). Pipe top subsidence is a local deformation problem caused by external load, foundation settlement or material fatigue during construction or use. If the pipe top subsidence is serious, it needs to be excavated and replaced for repair. If it is only a small subsidence, non-excavation repair technology can be used for repair.

[0005] Air bag repair is a non-excavation repair technology that restores the shape of the pipe by internal inflation and pressurization, and is suitable for small and medium subsidence repair of steel belt corrugated pipes. High-pressure air bags (or inflatable expansion devices) are used to apply radial pressure to the subsidence area inside the pipe to gradually lift and reset the subsided pipe top, and auxiliary materials are used to reinforce the repair area to restore the structural strength and water carrying capacity of the pipe. The auxiliary material reinforcement repair area generally uses local resin curing method, also known as felt cylinder air bag local forming method. By tightly pressing the glass fiber felt cloth coated with resin mixture on the inner wall of the pipe with an air bag, and then pressurizing at room temperature to achieve curing, a new inner lining pipe is formed to repair the local damage of the pipe. This method is simple and fast in construction, low in cost, and is very suitable for repairing small range of pipe damage such as cracks and holes; moreover, the local strength after repair is high, which can effectively prevent damage from expanding.

[0006] At present, the connection of the gas bag repair and the reinforcement of the repair area is not continuous. As a trenchless repair technology, the construction personnel on the road surface determines the collapse position, range and severity by using a closed-circuit television detection system or a pipeline periscope, and the repair gas bag is placed in the pipeline in advance and pulled to the corrugated pipe collapse position. The corrugated pipe is re-raised and reset by inflating the repair gas bag by pressurizing. After the corrugated pipe is raised and repaired, the repair gas bag is removed, and then the reinforcement operation is performed. The resin material is wrapped on the repair gas bag, and then the repair gas bag is pulled to the repair position again. The material is fixed on the corrugated pipe by using the inflation property again.

[0007] The current repair operation is complicated and requires the repair gas bag to be removed twice. Therefore, the present application designs a repair device for an environmentally friendly drainage pipeline, which simultaneously realizes pipeline raising and resetting and repair reinforcement operation at one time. SUMMARY

[0008] According to the problems in the background art, the present application provides a repair device for an environmentally friendly drainage pipeline to solve the problems. The present application will be further described below.

[0009] A repair device for an environmentally friendly drainage pipeline, comprising a repair float and a curing float connected to each other, wherein the repair float and the curing float are provided with repair gas bags and curing gas bags on the surfaces.

[0010] Further, the repair float and the curing float are rotationally connected, and the repair float and the curing float are provided with torsional springs at the rotational connection. The device can be rotated according to environmental requirements and smoothly put into the pipeline. The torsional springs maintain the repair float and the curing float in a straight line state when floating in water through the elastic force.

[0011] Further, one side of the repair gas bag different from the curing gas bag and one side of the curing gas bag different from the repair gas bag are connected with a distribution disc through a main shaft, the distribution disc is connected with a positioning wheel in the circumferential direction, and the position of the positioning wheel in the radial direction is beyond the position of the repair gas bag and the curing gas bag before collision. The purpose is to protect the repair gas bag and the curing gas bag from contacting the pipe wall.

[0012] Further, the solidification float is connected with end plates on both sides, the solidification float is rotatably arranged on the end plates, a rack is slidably arranged on the end plate close to the repairing float, a rubber coating ring is connected with one end of the rack, the rubber coating ring and the rack are provided with a coating channel in communication, a glue outlet is arranged on the inner ring of the rubber coating ring, and the glue outlet is communicated with the coating channel; the end plate close to the repairing float is further connected with a mounting seat and a glue injection machine, the glue injection machine is communicated with the coating channel of the rack through a rubber tube, a motor is arranged on the mounting seat, a screw rod is connected with the output shaft of the motor, and a bevel gear is rotatably arranged on the solidification float and engaged with the rack and the screw rod; one end of the screw rod penetrates through the end plate and is connected with a gear, the end of the solidification float is provided with a gear ring, and the gear is engaged with the gear ring. The solidification float rotates, and the movement of the rubber coating ring ensures that the glass fiber felt cloth is covered with the resin mixture.

[0013] Further, the dispensing disc is connected with a barrier air bag through a main shaft, a flow channel is arranged in the main shaft, a pump is connected with the end plate, a water pumping pipeline is connected with the water pumping port of the pump, and the water outlet of the pump is communicated with the flow channel in the main shaft through a water outlet pipeline. The barrier air bag is inflated under the action of the air compressor, so that the pipeline repairing part is isolated, and the pump only needs to discharge the water in the isolated pipe section.

[0014] Further, a cover is arranged outside the pump, and the water pumping pipeline is close to the pump. The position of the pump is arranged to maintain the water pumping port of the water pumping pipeline at the lowest position by using gravity, and the cover is used to protect the pump from water.

[0015] Further, an air cavity is arranged on the dispensing disc, the air cavity is communicated with the flow channel of the main shaft through an air pipe, a repairing electromagnetic valve, a solidification electromagnetic valve and a barrier electromagnetic valve are arranged on the air cavity, the repairing electromagnetic valve and the solidification electromagnetic valve are communicated with a repairing air bag and a solidification air bag through pipelines, and the barrier electromagnetic valve is communicated with the barrier air bags at both ends through a pipeline.

[0016] Further, a constant pressure electromagnetic valve is further arranged on the air cavity, and the constant pressure electromagnetic valve is connected with a constant pressure air supplement pipeline. After the barrier air bag is inflated to isolate the pipe section, the air compressor supplements air to the isolated pipe section during the process that the pump starts to discharge water, so that the smoothness of water discharge is maintained.

[0017] Advantageous effects: Compared with the prior art, the pipeline can be repaired and solidified in the pipeline, the repairing space is isolated by the air bag, the glue coating operation is completed in the isolated space, and the effect of the resin is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The application is a repairing device for an environmentally-friendly drainage pipeline.

[0019] Figure 2 The application is a repairing device for an environmentally-friendly drainage pipeline.

[0020] Figure 3 :Cross-sectional view of the structure at A in the middle; Figure 1

[0021] Figure 4 :Enlarged view of the structure at B in the middle; Figure 3

[0022] Figure 5 : Structure diagram of the rack and rubber coating ring;

[0023] Figure 6 : Schematic diagram of internal pipeline wiring of the repair device of the application.

[0024] In the figure: repair float 1, curing float 2, repair air bag 3, curing air bag 4, torsional spring 5, main shaft 6, distributor 7, positioning wheel 8, end plate 9, rack 10, rubber coating ring 11, mounting seat 12, glue injection machine 13, rubber tube 14, screw 15, bevel gear 16, gear 17, gear ring 18, barrier air bag 19, pump 20, water pumping pipeline 21, air cavity 22, air pipe 23, constant pressure air supplement pipe 24, motor 25. DETAILED DESCRIPTION

[0025] Next, the specific embodiments of the application will be described in detail in conjunction with the accompanying drawings. Figures 1-6 A specific embodiment of the application will be described in detail.

[0026] Reference is made to the accompanying drawings Figures 1-2 A repair device for an environmentally friendly drainage pipeline, comprising a repair float 1 and a curing float 2 connected to each other, and a repair air bag 3 and a curing air bag 4 distributed on the surface of the repair float 1 and the curing float 2. The repair air bag 3 and the curing air bag 4 are essentially special high-pressure air bags (usually made of rubber or fiber reinforced composite material), the presence of the repair float and the curing float makes the expansion direction of the repair air bag 3 and the curing air bag 4 radial outward when they are inflated, and the internal space can be used for pipeline wiring, check valves and pressure gauges can be installed at both ends of the repair float and the curing float, the air bags are connected to the inflation equipment outside the drainage pipeline, which is generally an air compressor, and the air bag 3 can be inflated and deflated by controlling the air compressor.

[0027] The repair float 1 and the curing float 2 float on the water in the drainage pipeline, which is beneficial to the traction of the overall repair device and can quickly be pulled to the collapsed part of the pipeline. Before traction, the water in the pipeline does not need to be completely drained, and the water body is used to suspend the air bag, which does not directly contact the pipe bottom, thereby avoiding the abrasion and impact of friction on the repair air bag 3 and the curing air bag 4.

[0028] When the pipe inspection periscope reaches the pipe collapse, the pipe inspection periscope determines that the repair air bag 3 is below the collapsed position, and then the air compressor starts to inflate the repair air bag 3, the repair air bag 3 gradually and slowly expands and lifts the collapsed part of the pipe upward until the pipe is reset. After the pipe is reset, the repair air bag 3 releases the gas to restore, and then the traction device is pulled to make the solidification air bag 4 move forward to be below the repair position. The solidification air bag 4 can be pre-wound with glass fiber felt cloth coated with resin mixed liquid in the prior art manner. After the actual solidification, the water in the pipe section needs to be completely drained, otherwise, the water will hinder the adhesion of the resin to the inner wall of the pipe, causing the inner lining to peel off or delaminate, and the water vapor during the resin curing process may form bubbles or hollows, reducing the structural strength after repair. Therefore, after the repair by the repair air bag 3, a water pump can be used to pump out the water in the pipe. After the pipe is free of water, the positioning wheel 8 is pressed against the bottom wall of the pipe, and the torsional spring 5 maintains the straight line state of the repair float 1 and the solidification float 2. At this time, the device can still be pulled forward without damage, so that the solidification float 2 moves to the repair position.

[0029] The repair float 1 and the solidification float 2 are rotationally connected between them. When put into the pipe by the climbing well, the repair float 1 and the solidification float 2 can be lowered by rotation to reduce the requirement for space, and can be smoothly put into the pipe. The repair float 1 and the solidification float 2 are provided with a torsional spring 5 at the rotationally connected position. The torsional spring 5 functions to maintain the repair float 1 and the solidification float 2 in a straight line state when floating on the water body by the elastic force.

[0030] There is un-drained water in the pipe. The device can be pulled to the repair position with low resistance by using the buoyancy of the water body. The suspended air bag does not contact the pipe bottom wall, which can avoid damage to the air bag. If the water depth is deep, the air bag is further protected from being scratched by the pipe top. In this embodiment, the following technical solution is adopted: One side of the repair air bag 3 different from the solidification air bag 4 and one side of the solidification air bag 4 different from the repair air bag 3 are connected with a distribution disc 7 through a main shaft 6. The distribution disc 7 is circumferentially connected with a positioning wheel 8. The radial position of the positioning wheel 8 exceeds the position of the repair air bag 3 and the solidification air bag 4 before collision. During the pulling process, on the premise that the torsional spring 5 maintains the straight line state of the repair float 1 and the solidification float 2, based on the existence of the positioning wheel 8, the repair air bag 3 and the solidification air bag 4 do not contact the pipe wall.

[0031] As described above, for the traction device, there is un-drained water in the pipe. Under the continuous repair and solidification target of the present application, the solidification float 2 can be pre-wound with glass fiber felt cloth coated with resin mixed liquid. Before actual solidification, the water in the pipe section needs to be completely drained, otherwise, the water will hinder the adhesion of the resin to the inner wall of the pipe, causing the inner lining to peel off or delaminate, and the water vapor during the resin curing process may form bubbles or hollows, reducing the structural strength after repair. Therefore, after the repair by the repair air bag 3, a water pump can be used to pump out the water in the pipe. After the pipe is free of water, the positioning wheel 8 is pressed against the bottom wall of the pipe, and the torsional spring 5 maintains the straight line state of the repair float 1 and the solidification float 2. At this time, the device can still be pulled forward without damage, so that the solidification float 2 moves to the repair position.

[0032] Reference is made to the drawingsFigures 3-5 According to common sense, water will dilute the uncured resin, change its ratio (such as the proportion of curing agent), cause incomplete curing or mechanical property decline, and even part of the resin (such as epoxy resin) may hydrolyze when meeting water, affecting durability. Based on this, the embodiment does not use the method of pre-bundling glass fiber felt cloth coated with resin mixed solution outside the pipeline, but coats the resin after discharging the water in the pipeline during the repair in the pipeline. The specific scheme is as follows: the end plates 9 are connected on both sides of the curing float 2, the curing float 2 is rotationally arranged on the end plates 9, the rack 10 is slidingly arranged on the end plate 9 close to the repair float 1, one end of the rack 10 is connected with the glue coating ring 11, the glue coating ring 11 is internally provided with the glue coating channel communicated with the rack 10, the glue coating ring 11 is internally provided with the glue outlet arranged in an array on the circumference of the inner ring, and the glue outlet is communicated with the glue coating channel; the mounting seat 12 and the glue injection machine 13 are further connected on the end plate 9 close to the repair float 1, the glue injection machine 13 is communicated with the glue coating channel of the rack 10 through the glue pipe 14, the motor 25 is arranged on the mounting seat 12, the output shaft of the motor 25 is connected with the screw rod 15, the bevel gear 16 is further rotationally arranged on the curing float 2, and the bevel gear 16 is respectively meshed with the rack 10 and the screw rod 15; one end of the screw rod 15 penetrates through the end plate 9 and is connected with the gear wheel 17, and the end of the curing float 2 is connected with the gear ring 18, and the gear wheel 17 is meshed with the gear ring 18.

[0033] Outside the pipeline, the glass fiber felt cloth is pre-bundled on the curing air bag 4 of the curing float 2, and then the device is pulled to the repair position of the pipeline. After the repair in the pipeline is completed, the water in the pipeline is discharged, and then the resin is coated. The operation steps of on-site glue coating in the pipeline are as follows: the motor 25 is started. On the one hand, the rack 10 is gradually pulled out through meshing transmission, and then the glue coating ring 11 is synchronously pulled to move towards the repair float 1. At this time, the glue injection machine 13 pours the resin into the glue coating channel of the glue coating ring 11 through the glue pipe 14. The glue coating ring 11 moves in the process and coats the resin mixed solution on the glass fiber felt cloth through the glue outlet thereon. On the other hand, the curing float 2 is driven to rotate through the meshing transmission of the gear wheel 17 and the gear ring 18, and the movement of the glue coating ring 11 makes the glass fiber felt cloth be covered with the resin mixed solution. After the coating is completed, the rack 10 and the glue coating ring 11 are moved to the outside of the radial expansion direction of the curing air bag 4, so as to reserve the expansion space for the curing air bag 4.

[0034] Before gluing, the water in the pipeline needs to be completely discharged, but the current method is to pump out all the water in the pipeline, which is large in engineering quantity and long in time. In the present embodiment, the repair position of the device is isolated from the pipeline by the blocking air bag 19, and then only the water in the isolated space needs to be pumped out. Specifically, the distribution disc 7 is connected with the blocking air bag 19 through the main shaft, the main shaft is provided with a flow channel, the end plate 9 is connected with the pump 20, the water suction pipe 21 is connected with the water suction port of the pump 20, and the water outlet of the pump 20 is connected with the flow channel in the main shaft through the water outlet pipe, and then connected with the drainage pipe outside the blocking air bag 19. Before gluing, the blocking air bags 19 at both ends are inflated under the action of the air compressor, thereby isolating the pipeline repair position, and then starting the pump 20 to discharge the water in the isolated pipe section from the flow channel in the main shaft.

[0035] The pump 20 is provided with a cover, and the water suction pipe 21 is close to the pump 20. The position of the pump 20 is set to maintain the water suction port of the water suction pipe 21 at the lowest position by using its gravity. At this time, the pump 20 may be immersed in the water body, and the cover is used to protect the pump 20 from water.

[0036] Referring to the drawings Figure 1 and Figure 6 In the present application, the external air compressor needs to fill gas into the repair air bag 3, the curing air bag 4 and the blocking air bag 19 respectively. The following pipeline wiring scheme is adopted in the present embodiment: a gas cavity 22 is arranged on a distribution disc 7, the gas cavity 22 is connected to the flow channel of the main shaft through a gas pipe 23, and the external air compressor is connected to the flow channel of the main shaft through a pipeline; a repair electromagnetic valve, a curing electromagnetic valve and a blocking electromagnetic valve are arranged on the gas cavity 22, the repair electromagnetic valve and the curing electromagnetic valve are connected to the repair air bag 3 and the curing air bag 4 through a pipeline, and the blocking electromagnetic valve is connected to the blocking air bags 19 at both ends through a pipeline. The gas can be filled or released into different air bag structures by controlling the on-off of the electromagnetic valve.

[0037] A constant pressure electromagnetic valve is also arranged on the gas cavity 22, and the constant pressure electromagnetic valve is connected with a constant pressure air supplement pipe 24. After the blocking air bag 19 is inflated to isolate the pipe section, the pump 20 starts the water discharge process, the air pressure in the isolated pipe section decreases, so the constant pressure electromagnetic valve is opened during the water discharge process, the air compressor supplements air to the isolated pipe section, and the smoothness of the water discharge is maintained.

[0038] The repair electromagnetic valve, the curing electromagnetic valve, the blocking electromagnetic valve and the constant pressure electromagnetic valve are conventional electromagnetic valves, and the repair air bag and the curing air bag are also conventional repair air bags, which are only distinguished from each other by naming in the present embodiment. The two main shafts of the present application are connected with the external air compressor, serving as the filling and releasing channel of the gas, and connected with the pump, serving as the drainage channel of the isolated pipe section. In the following description of the working principle, the airflow main shaft and the drainage main shaft are used as the distinction.

[0039] The repairing steps of the environment-friendly drainage pipeline realized by the application are as follows:

[0040] Firstly, the glass fiber felt cloth without resin mixture is wound on the curing air bag 4 of the curing float 2 on the roadbed, and the device is put into the drainage pipeline section through the climbing well, suspended on the upper, and pulled by the periscope to pull the device to the pipeline collapse position;

[0041] Secondly, the periscope is used to determine that the repairing air bag 3 is below the collapsed position, the air compressor is started, the repairing electromagnetic valve is opened, the air compressor gradually fills the repairing air bag 3 with gas, the repairing air bag 3 slowly expands, the collapsed position of the pipeline is lifted and repaired, the repairing air bag 3 releases the gas after the repairing, and the repairing electromagnetic valve is closed after the repairing air bag 3 recovers;

[0042] Thirdly, the pulling device moves forward, the periscope is used to determine that the curing air bag 4 is below the collapsed and repaired position, the blocking electromagnetic valve is opened, the air compressor gradually fills the blocking air bag 19 with gas, the blocking air bag 19 slowly expands until tightly pressed on the inner wall of the pipeline to isolate the pipeline section, and the blocking electromagnetic valve is opened and closed to maintain the isolation state of the isolated pipeline section;

[0043] Fourthly, the constant pressure electromagnetic valve is opened, the pump 20 is started, the water pipeline 21 discharges the water in the isolated pipeline section from the flow channel in the drainage main shaft to the outside, the air compressor injects the gas into the isolated pipeline section to fill the space after the water is discharged, the pump 20 stops after the water is discharged, and the constant pressure electromagnetic valve is closed;

[0044] Fifthly, the motor 25 is started, on one hand, the rack 10 is gradually pulled out through the meshing transmission, and then the glue coating ring 11 is synchronously pulled to the direction of the repairing float 1, the glue injection machine 13 fills the resin into the glue coating way of the glue coating ring 11 through the glue pipe 14, and the glue coating ring 11 coats the resin mixture on the glass fiber felt cloth through the glue outlet on the glue coating ring 11 in the moving process; on the other hand, the curing float 2 is driven to rotate through the meshing transmission of the gear 17 and the gear ring 18, and the glass fiber felt cloth can be covered with the resin mixture through the movement of the glue coating ring 11, and the rack 10 and the glue coating ring 11 are static in the radial expansion direction of the curing air bag 4 after the coating is completed;

[0045] Sixthly, the curing electromagnetic valve is opened, the air compressor fills the curing air bag 4 with gas, the curing air bag 4 slowly collides, the pre-bound binding rope is first torn off, and then the glass fiber felt cloth coated with the resin mixture is pressed on the pipeline repair position to realize the curing purpose, and the curing air bag 4 releases the gas to recover after the curing, and the curing electromagnetic valve is closed;

[0046] In the seventh step, after the curing of the air bag 4 is recovered, the motor 25 is started to reset the rack 10 and the glue coating ring 11, the blocking electromagnetic valve is opened, the air bag 19 releases the gas, the air bag 19 is recovered, the water outside the pipeline is returned, the device is floated on the water body again, the device is taken out through the traction device, and the repairing operation is completed.

[0047] The present application can complete the repairing and curing operations in the pipeline, the repairing space is isolated through the air bag, the water discharge workload is reduced, the water discharge time is shortened, and the glue coating operation is completed in the isolated space, so that the effect of the resin is guaranteed.

[0048] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A repair device for an environmentally friendly sewer pipe, characterized in that: The utility model provides a kind of repair and solidification floating pontoon, including mutually connected repair floating pontoon (1) and solidification floating pontoon (2), repair floating pontoon (1) and solidification floating pontoon (2) surface distribution are equipped with repair air bag (3) and solidification air bag (4);The repair floating pontoon (1) and solidification floating pontoon (2) are rotatably connected, and repair floating pontoon (1) and solidification floating pontoon (2) are provided with torsion spring (5) at rotatable connection place;Repair air bag (3) is different from the side of solidification air bag (4), and the side of solidification air bag (4) is different from repair air bag (3) is connected with matching disc (7) by main shaft (6), and the matching disc (7) is connected with positioning wheel (8) along the circumference, and the position of the positioning wheel (8) in radial direction exceeds the position of repair air bag (3), solidification air bag (4) before collision; The both sides of the solidification floating pontoon (2) are connected with end plate (9), the solidification floating pontoon (2) is rotatably arranged on the end plate (9), the end plate (9) on the side close to the repair floating pontoon (1) is slidably provided with rack (10), one end of the rack (10) is connected with rubber coating ring (11), the rack (10) and the rubber coating ring (11) are provided with a communicating rubber coating channel, the inner ring of the rubber coating ring (11) is provided with a glue outlet, and the glue outlet is communicated with the rubber coating channel;The end plate (9) on the side close to the repair floating pontoon (1) is further connected with mounting seat (12) and glue injection machine (13), the glue injection machine (13) is communicated with the rubber coating channel of the rack (10) through glue pipe (14), the mounting seat (12) is provided with motor (25), the output shaft of the motor (25) is connected with screw rod (15), the solidification floating pontoon (2) is further rotatably provided with helical gear (16), and the helical gear (16) is respectively engaged with the rack (10) and the screw rod (15);One end of the screw rod (15) penetrates the end plate (9) and is connected with gear (17), and the end of the solidification floating pontoon (2) is provided with gear ring (18), and the gear (17) is engaged with the gear ring (18); The matching disc (7) is connected with barrier air bag (19) by main shaft, and the main shaft is provided with flow channel, the end plate (9) is connected with pump (20), the pumping port of the pump (20) is connected with pumping pipeline (21), and the water outlet of the pump (20) is communicated with the flow channel in the main shaft through water outlet pipeline.

2. A device for repairing an environmentally friendly sewer pipe according to claim 1, characterized in that: The pump (20) is provided with a cover, and the pumping pipeline (21) is close to the pump (20).

3. A device for repairing an environmentally friendly sewer pipe according to claim 2, characterized in that: A matching disc (7) is provided with air cavity (22), the air cavity (22) is communicated with the flow channel of the main shaft through air pipe (23), the air cavity (22) is provided with repair electromagnetic valve, solidification electromagnetic valve and barrier electromagnetic valve, the repair electromagnetic valve and the solidification electromagnetic valve are communicated with the repair air bag (3) and the solidification air bag (4) through pipeline, and the barrier electromagnetic valve is communicated with the barrier air bag (19) at both ends through pipeline.

4. A device for repairing an environmentally friendly sewer pipe according to claim 3, characterized in that: The air cavity (22) is further provided with constant pressure electromagnetic valve, and the constant pressure electromagnetic valve is connected with constant pressure air supplement pipe (24).

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