Anti-leakage connecting device for urban drainage pipe

Abstract

The invention relates to the technical field of urban drainage facilities, in particular to an anti-leakage connecting device for an urban drainage pipe. Comprising a connecting pipe, the connecting pipe is arranged outside the connecting ends of two drainage pipes to be connected in a sleeving mode, connecting rings are arranged at the two ends of the connecting pipe, the connecting rings are attached to the inner sides of the connecting ends, and sealing pipes are connected between the connecting pipe and the connecting rings; an annular air bag is arranged in the middle of the inner side of the connecting pipe, the air bag is in contact sealing with the inner sides of the two sealing pipes after being inflated, an adjusting layer is arranged at the bottom of the air bag, two auxiliary air bags are connected to the outer side of the adjusting layer and laid at the bottom of the inner side of the drainage pipe to be connected, and a detection plate is connected to the middle of the air bag. And a detection rod is arranged in the detection plate, the upper end of the detection rod is connected with a gas release assembly, and when the connecting pipe inclines, the gas release assembly inflates the auxiliary gas bag on the lower side of the connecting pipe and fills a gap between the to-be-drained pipe and the connecting pipe, so that garbage retention is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of urban drainage facilities, and specifically relates to an anti-leakage connection device for urban drainage pipes. Background Art

[0002] The urban drainage system is an important part of urban infrastructure construction, and its stability and reliability directly affect the urban flood control and drainage capacity.

[0003] At the joints of drainage pipes, problems such as leakage and dislocation often occur due to foundation settlement, pipe aging or construction quality problems, resulting in sewage leakage or groundwater infiltration. This not only affects the drainage efficiency, but also may cause environmental pollution and pipe damage. Traditional drainage pipe connection methods mainly use rubber ring seals or cement mortar filling, but these methods are prone to failure due to pipe deformation or foundation settlement during long-term use. Foundation settlement will cause the pipe ends to tilt, resulting in leakage at the pipe joints. Moreover, the existing pipe connection methods lack the automatic compensation function for pipe tilt or dislocation. When the pipe is deformed or dislocated, it is easy for garbage and sundries to accumulate at the joints of the drainage pipes, further increasing the leakage risk.

[0004] Therefore, there is an urgent need for an anti-leakage connection device for urban drainage pipes that can automatically adapt to pipe deformation, prevent leakage and reduce garbage retention. Summary of the Invention

[0005] To solve the above problems, the present invention provides an anti-leakage connection device for urban drainage pipes.

[0006] The technical solution adopted by the present invention to solve its technical problems is: an anti-leakage connection device for urban drainage pipes, including a connecting pipe, the connecting pipe is sleeved outside the connecting ends of two drainage pipes to be connected, connecting rings are arranged at both ends of the connecting pipe, the connecting rings are attached to the inner sides of the connecting ends, and a sealing pipe is connected between the connecting pipe and the connecting rings; An annular airbag is arranged in the middle of the inner side of the connecting pipe. After the airbag is inflated, it contacts and seals the inner sides of the two sealing pipes. An adjusting layer is arranged at the bottom of the airbag. Two auxiliary airbags are connected to the outer side of the adjusting layer. The auxiliary airbags are laid on the inner bottom of the drainage pipes to be connected. A detection plate is connected to the middle of the airbag. A detection rod is arranged inside the detection plate. The lower end of the detection rod passes through the connecting pipe and is buried in the soil layer downward. The upper end of the detection rod is connected to a pull rope. The outer end of the pull rope is connected to a gas release assembly. Two vertical baffles are arranged at the upper part of the inner side of the adjusting layer. When the connecting pipe is tilted, the detection rod drives the detection plate to deflect, and pulls the gas release assembly through the pull rope, so that the auxiliary airbag on the lower side of the connecting pipe is inflated to fill the gap between the drainage pipe to be connected and the connecting pipe, avoiding garbage retention.

[0007] As an optimization, an inflation tube is provided at the top of the airbag, and the outer end of the inflation tube is located outside the connecting tube; An installation hole is formed at the bottom of the connecting tube, the diameter of the installation hole is larger than the diameter of the detection rod, and the detection rod passes through the installation hole without contacting the installation hole.

[0008] As an optimization, the outer ring of the airbag is fixedly adhered to the inner wall of the connecting tube, the inner ring of the airbag is an inwardly convex arc surface, and the airbag is in tight contact with the end of the drain pipe to be connected after inflation; The adjustment layer is a semi-cylindrical cavity, the adjustment layer is hermetically separated from the inside of the airbag, and a through hole is formed at the connection between the adjustment layer and the auxiliary airbag.

[0009] As an optimization, the two vertical baffles are symmetrically arranged along the vertical center line of the adjustment layer, the detection plate is located between the two baffles, and communication channels are provided between the lower ends of the baffles and the bottom of the adjustment layer and between the detection plate and the top of the adjustment layer. When the detection plate deflects, the detection plate contacts one of the baffles, separating the adjustment layer into two relatively sealed cavities.

[0010] As an optimization, the upper end of the detection plate and the lower end of the baffle are provided with cylindrical sealing ends, the detection plate is made of rubber, and the detection rod is located in the middle of the detection plate; A wire passing hole is formed in the upper part of the baffle, the gas release assembly is located on the side of the baffle away from the detection plate, the pull rope is arranged through the wire passing hole, and the number of the pull ropes is the same as the number of the auxiliary airbags.

[0011] As an optimization, the gas release assembly includes a release box, powder and reaction liquid. A partition membrane is arranged inside the release box, the pull rope is connected to the partition membrane, the powder is filled on the upper side of the partition membrane, the reaction liquid is filled on the lower side of the partition membrane, and the powder reacts with the reaction liquid to generate gas after mixing; An air hole is formed in the top of the release box, and the generated gas is released outward through the air hole.

[0012] As an optimization, the connecting ring is rigid, the sealing tube is made of elastic sealing material. When the drain pipe to be connected is connected to the connecting tube, the sealing tube covers the end of the drain pipe to be connected and is in contact and sealed with the airbag.

[0013] As an optimization, the powder is sodium bicarbonate or sodium carbonate, and the reaction liquid is hydrochloric acid or acetic acid.

[0014] The beneficial effects of this solution are as follows: By setting up and using auxiliary air bags, the connection sealing effect of the drain pipe to be connected is improved. And when the connecting pipe is tilted, the detection rod and the detection plate can trigger the gas release component, causing the auxiliary air bag on the lower side to be inflated, automatically filling the low-lying part at the pipe connection, preventing garbage and sundries from staying, reducing the risk of blockage, and effectively preventing leakage and garbage retention. Both ends of the connecting pipe are provided with connecting rings and sealing pipes. After the air bag is inflated, it contacts the inner side of the sealing pipe, forming a double-sealing structure, significantly enhancing the anti-leakage ability at the connection. The device adopts a modular design. Components such as the air bag, the adjustment layer, and the auxiliary air bag work together. Without external power, it realizes its functions only relying on mechanical structures and chemical reactions, with low maintenance costs and a long service life. This device is applicable to the connection of drain pipes with different diameters and materials, is easy to install, and can be widely used in new construction or renovation projects of urban drainage systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an isometric schematic view of the present invention.

[0016] Figure 2 It is a front view schematic view of the present invention.

[0017] Figure 3 This is the present invention Figure 2 of the A-A sectional structure schematic view.

[0018] Figure 4 It is a schematic view of the state of the connecting pipe during ground settlement of the present invention.

[0019] Figure 5 It is a schematic view of the internal structure of the gas release component of the present invention.

[0020] Figure 6 This is the present invention Figure 3 of the enlarged structure schematic view of part A.

[0021] Wherein, 1. Connecting pipe, 2. Drain pipe to be connected, 3. Connecting ring, 4. Sealing pipe, 5. Air bag, 6. Adjustment layer, 7. Auxiliary air bag, 8. Detection plate, 9. Detection rod, 10. Pulling rope, 11. Baffle, 12. Inflation pipe, 13. Installation hole, 14. Through hole, 15. Sealed end, 16. Threading hole, 17. Release box, 18. Powder, 19. Reaction liquid, 20. Partition membrane, 21. Air hole. DETAILED DESCRIPTION OF THE INVENTION

[0022] As Figures 1-6As shown, a leakage-proof connection device for urban drainage pipes includes a connecting pipe 1, which is sleeved on the outside of the connecting ends of two drainage pipes 2 to be connected. Both ends of the connecting pipe 1 are provided with connecting rings 3, which are fitted on the inner sides of the connecting ends. A sealing pipe 4 is connected between the connecting pipe 1 and the connecting rings 3. An annular airbag 5 is provided in the middle part of the inner side of the connecting pipe 1. After the airbag 5 is inflated, it contacts and seals with the inner sides of the two sealing tubes 4. An adjustment layer 6 is provided at the bottom of the airbag 5. Two auxiliary air bags 7 are connected to the outer side of the adjustment layer 6. The auxiliary air bags 7 are laid on the inner bottom of the drainage pipe 2 to be connected. A detection plate 8 is connected to the middle part of the airbag 5. A detection rod 9 is provided inside the detection plate 8. The lower end of the detection rod 9 passes through the connecting pipe 1 and is buried downward in the soil layer. A pull rope 10 is connected to the upper end of the detection rod 9. The outer end of the pull rope 10 is connected to a gas release component. Two vertical baffles 11 are provided on the upper inner side of the adjustment layer 6. When the connecting pipe 1 tilts, the detection rod 9 drives the detection plate 8 to deflect, and pulls the gas release component through the pull rope 10 to inflate the auxiliary air bag 7 located on the lower side of the connecting pipe 1, filling the gap between the drainage pipe and the connecting pipe 1 to avoid garbage retention.

[0023] The connecting pipe 1 can be made of high-strength PVC, HDPE, stainless steel, or aluminum alloy. The connecting ring 3 can be made of hard stainless steel or high-strength PVC. The inner diameter of the connecting ring 3 matches the inner diameter of the drain pipe 2 to be connected, and the connection can be made directly or sealed with a rubber gasket.

[0024] The sealing tube 4 can be made of EPDM or chloroprene rubber with a thickness of 3-10 mm, has corrosion resistance and high elasticity, and is connected between the connecting ring 3 and the connecting tube 1 to form a dynamic and variable sealing interface.

[0025] The airbag 5 can be made of butyl rubber or polyurethane coated fabric, which has high air tightness and wear resistance. After being inflated, it can be squeezed tightly between the two drainage pipes 2 to be connected and basically level, without affecting the discharge of sewage.

[0026] The regulating layer 6 is a semicircular wall pre-filled with gas, and is separated from the airbag 5 by a TPU diaphragm. The auxiliary airbag 7 can be made of the same material as the airbag 5 and is laid at the connection between the connecting pipe 1 and the drain pipe 2 to be connected.

[0027] like Figure 4 and Figure 6 As shown, an inflation tube 12 is provided on the top of the airbag 5, and the outer end of the inflation tube 12 is located outside the connecting tube 1; The bottom of the connecting pipe 1 is provided with an installation hole 13, the diameter of the installation hole 13 is larger than the diameter of the detection rod 9, and the detection rod 9 passes through the installation hole 13 without contacting the installation hole 13.

[0028] The air charging pipe 12 is configured with a sealing cover. The air charging pipe 12 can be inflated by an external air pump, and the inflation pressure is 0.1 - 0.3 MPa.

[0029] The detection rod 9 is hermetically connected to the airbag 5, and a reinforcing structure is provided at the lower end of the detection rod 9, so that the contact area between the detection rod 9 and the soil is large.

[0030] As Figure 3 and Figure 6 shown, the outer ring of the airbag 5 is fixedly pasted to the inner wall of the connecting pipe 1. The inner ring of the airbag 5 is an inwardly convex arc surface. After the airbag 5 is inflated, it abuts against the end of the drain pipe 2 to be connected. The adjustment layer 6 is a semi-cylindrical cavity. The adjustment layer 6 is hermetically separated from the inside of the airbag 5. A through hole 14 is provided at the connection between the adjustment layer 6 and the auxiliary airbag 7.

[0031] After the airbag 5 is inflated, it does not affect the flow of sewage inside the drain pipe 2 to be connected, and can tightly seal between the two drain pipes 2 to be connected.

[0032] As Figure 6 shown, the two vertical baffles 11 are symmetrically arranged along the vertical center line of the adjustment layer 6. The detection plate 8 is located between the two baffles 11. Communication channels are provided between the lower end of the baffle 11 and the bottom of the adjustment layer 6, and between the detection plate 8 and the top of the adjustment layer 6. When the detection plate 8 deflects, the detection plate 8 contacts one of the baffles 11, separating the adjustment layer 6 into two relatively sealed cavities.

[0033] After the detection plate 8 contacts and seals with the baffle 11, the gas release box 17 releases gas inside. The gas enters the inside of the auxiliary airbag 7 through the through hole 14, causing the auxiliary airbag 7 to inflate.

[0034] As Figure 6 shown, the upper end of the detection plate 8 and the lower end of the baffle 11 are configured with cylindrical sealing ends 15. The detection plate 8 is made of rubber material, and the detection rod 9 is located in the middle of the detection plate 8. The upper part of the baffle 11 is provided with a wire passing hole 16. The gas release assembly is located on the side of the baffle 11 away from the detection plate 8. The pull rope 10 is arranged through the wire passing hole 16, and the number of the pull ropes 10 is the same as the number of the auxiliary airbags 7.

[0035] When one of the drain pipes 2 to be connected settles, there is a difference in the heights of the ends of the two drain pipes 2 to be connected. The settling drain pipe 2 to be connected causes the connecting pipe 1 to tilt. After the connecting pipe 1 tilts, since the detection rod 9 is always in a vertical state, when the detection rod 9 drives the detection plate 8 to deflect, the detection plate 8 pulls the pull rope 10, causing the gas release assembly to release gas.

[0036] As Figure 5 shown, the gas release assembly includes a release box 17, a powder 18, and a reaction liquid 19. A partition membrane 20 is arranged inside the release box 17. The pull rope 10 is connected to the partition membrane 20. The powder 18 is filled on the upper side of the partition membrane 20, and the reaction liquid 19 is filled on the lower side of the partition membrane 20. The powder 18 and the reaction liquid 19 react after mixing to generate gas; A gas hole 21 is opened at the top of the release box 17, and the generated gas is released outward through the gas hole 21.

[0037] The powder 18 is sodium bicarbonate or sodium carbonate, and the reaction liquid 19 is hydrochloric acid or acetic acid. Correspondingly, the powder 18 can also be an ammonium salt, and the corresponding reaction liquid 19 can be a sodium hydroxide solution. As long as the powder 18 and the reaction liquid 19 can release relatively safe gas after reaction, appropriate materials can be selected for filling during production.

[0038] As Figure 3 shown, the connecting ring 3 is rigid, and the sealing pipe 4 is made of an elastic sealing material. When the drain pipe 2 to be connected is connected to the connecting pipe 1, the sealing pipe 4 covers the end of the drain pipe 2 to be connected and is in contact and sealed with the airbag 5.

[0039] Usage method: During initial installation, the connecting ring 3 is hermetically connected to the drain pipe 2 to be connected, and the two drain pipes 2 to be connected are pushed until the ends of the two drain pipes 2 to be connected extend into the connecting pipe 1; The airbag 5 is inflated through the inflation pipe 12, so that the airbag 5 expands and is in close contact with the inner side of the sealing tank, forming a main sealing layer.

[0040] When the foundation settlement causes the connecting pipe 1 to tilt, the connecting pipe 1 drives the detection plate 8 to deflect relative to the connecting rod, causing the detection plate 8 to contact the baffle 11 on the upper side. At the same time, the detection plate 8 pulls the pull rope 10 to move. The pull rope 10 pulls the partition membrane 20 upward, causing the powder 18 and the reaction liquid 19 to come into contact. The powder 18 and the reaction liquid 19 react to release gas, and the gas is released outward through the through hole 14, inflating the auxiliary airbag 7. After the auxiliary airbag 7 is inflated, it expands and fills the low-lying area between the connecting pipe 1 and the drain pipe 2 to be connected; After the auxiliary airbag 7 is inflated, it can raise the bottom gap between the drain pipes 2 to be connected, preventing garbage accumulation. At the same time, the airbag 5 can continuously provide radial pressure to compensate for pipe misalignment.

[0041] The length and buried depth of the detection rod 9 of this application are adjustable and can adapt to the settlement speeds of different soil types. For example, in soft soil areas, the buried depth can be increased. The airbag 5 and the auxiliary airbag 7 are made of aging-resistant rubber and have a relatively long service life.

[0042] The above specific embodiments are only specific cases of the present invention. The patent protection scope of the present invention includes, but is not limited to, the product forms and styles of the above specific embodiments. Any urban drain pipe anti-leakage connection device that conforms to the claims of the present invention and any appropriate changes or modifications made by those of ordinary skill in the relevant technical fields shall fall within the patent protection scope of the present invention.

Claims

1. A leak-proof connection device for urban drainage pipes, comprising a connecting pipe (1), wherein the connecting pipe (1) is sleeved outside the connecting ends of two drainage pipes (2) to be connected, and is characterized in that: Both ends of the connecting pipe (1) are provided with connecting rings (3), the connecting rings (3) are fitted to the inner side of the connecting end, and a sealing pipe (4) is connected between the connecting pipe (1) and the connecting rings (3); An annular airbag (5) is arranged in the middle of the inner side of the connecting pipe (1). After the airbag (5) is inflated, it contacts and seals the inner sides of the two sealing pipes (4). An adjusting layer (6) is arranged at the bottom of the airbag (5). Two auxiliary airbags (7) are connected to the outer side of the adjusting layer (6). The auxiliary airbags (7) are laid on the inner bottom of the drain pipe (2) to be connected. A detection plate (8) is connected to the middle of the airbag (5). A detection rod (9) is arranged inside the detection plate (8). The lower end of the detection rod (9) passes through the connecting pipe (1) and is buried downward in the soil layer. The upper end of the detection rod (9) is connected with a pull rope (10). The outer end of the pull rope (10) is connected with a gas release assembly. Two vertical baffles (11) are arranged at the upper part of the inner side of the adjusting layer (6). When the connecting pipe (1) tilts, the detection rod (9) drives the detection plate (8) to deflect, and pulls the gas release assembly through the pull rope (10), so that the auxiliary airbag (7) on the lower side of the connecting pipe (1) is inflated to fill the gap between the drain pipe to be connected and the connecting pipe (1), avoiding garbage retention.

2. The anti-leakage connection device for urban drainage pipes according to claim 1, characterized in that: An air charging pipe (12) is arranged at the top of the airbag (5), and the outer end of the air charging pipe (12) is located outside the connecting pipe (1); An installation hole (13) is formed in the bottom of the connecting pipe (1). The diameter of the installation hole (13) is larger than the diameter of the detection rod (9). The detection rod (9) passes through the installation hole (13) and does not contact the installation hole (13).

3. The anti-leakage connection device for urban drainage pipes according to claim 1, characterized in that: The outer ring of the airbag (5) is fixedly adhered to the inner wall of the connecting pipe (1). The inner ring of the airbag (5) is an inwardly convex arc surface. After the airbag (5) is inflated, it abuts against the end of the drain pipe (2) to be connected; The adjusting layer (6) is a semi-cylindrical cavity. The adjusting layer (6) is hermetically separated from the inside of the airbag (5). A through hole (14) is formed at the connection between the adjusting layer (6) and the auxiliary airbag (7).

4. The anti-leakage connection device for urban drainage pipes according to claim 1, wherein: The two vertical baffles (11) are symmetrically arranged along the vertical center line of the adjusting layer (6). The detection plate (8) is located between the two baffles (11). Communication channels are arranged between the lower end of the baffle (11) and the bottom of the adjusting layer (6), and between the detection plate (8) and the top of the adjusting layer (6). When the detection plate (8) deflects, the detection plate (8) contacts one of the baffles (11), separating the adjusting layer (6) into two relatively sealed cavities.

5. The anti-leakage connection device for urban drainage pipes according to claim 1, characterized in that: Cylindrical sealing ends (15) are arranged at the upper end of the detection plate (8) and the lower end of the baffle (11). The detection plate (8) is made of rubber material. The detection rod (9) is located in the middle of the detection plate (8); A threading hole (16) is formed in the upper part of the baffle (11). The gas release assembly is located on the side of the baffle (11) away from the detection plate (8). The pull rope (10) is arranged through the threading hole (16). The number of the pull ropes (10) is the same as that of the auxiliary air bags (7).

6. The anti-leakage connection device for urban drainage pipes according to claim 1, characterized in that: The gas release assembly includes a release box (17), powder (18) and reaction liquid (19). A partition membrane (20) is arranged inside the release box (17). The pull rope (10) is connected to the partition membrane (20). The powder (18) is filled on the upper side of the partition membrane (20). The reaction liquid (19) is filled on the lower side of the partition membrane (20). After the powder (18) is mixed with the reaction liquid (19), a gas is generated through reaction; A gas hole (21) is formed in the top of the release box (17). After the gas is generated, it is released outward through the gas hole (21).

7. The anti-leakage connection device for urban drainage pipes according to claim 1, characterized in that: The connecting ring (3) is rigid. The sealing pipe (4) is made of an elastic sealing material. When the drain pipe (2) to be connected is connected to the connecting pipe (1), the sealing pipe (4) covers the end of the drain pipe (2) to be connected, and the sealing pipe (4) is in contact with and seals the air bag (5).

8. The anti-leakage connection device for urban drainage pipes according to claim 6, wherein: The powder (18) is sodium bicarbonate or sodium carbonate. The reaction liquid (19) is hydrochloric acid or acetic acid.

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