A leakage-proof connection device for urban drainage pipes

Abstract

The present invention relates to the technical field of urban drainage facilities, and more specifically, to an anti-leakage connection device for urban drainage pipes. The device comprises a connecting pipe, which is sleeved on the outside of the connecting ends of two drainage pipes to be connected, with connecting rings provided at both ends of the connecting pipe, the connecting rings being fitted on the inner sides of the connecting ends, and a sealing pipe being connected between the connecting pipe and the connecting ring; an annular airbag is provided at the middle of the inner side of the connecting pipe, which contacts and seals the inner sides of the two sealing pipes after being inflated, an adjustment layer is provided at the bottom of the airbag, and two auxiliary airbags are connected to the outer sides of the adjustment layer, and the auxiliary airbags are laid on the inner bottom of the drainage pipes to be connected, a detection plate is connected at the middle of the airbag, a detection rod is provided inside the detection plate, and a gas release component is connected to the upper end of the detection rod. When the connecting pipe is tilted, the gas release component inflates the auxiliary airbag on the lower side of the connecting pipe to fill the gap between the drainage pipe to be connected and the connecting pipe to prevent garbage from being trapped.

Description

Technical Field

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

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

[0003] At the connection points of drainage pipes, leakage and misalignment often occur due to foundation settlement, pipe aging, or construction quality issues, leading to sewage leakage or groundwater infiltration, which not only affects drainage efficiency but may also cause environmental pollution and pipe damage. Traditional drainage pipe connection methods mainly use rubber ring sealing or cement mortar filling, but these methods are prone to failure due to pipe deformation or foundation settlement during long-term use. Foundation settlement can cause the pipe ends to tilt, resulting in leakage at the pipe connection. In addition, existing pipe connection methods lack the function of automatic compensation for pipe tilt or misalignment. When the pipe is deformed or misaligned, it is easy for garbage and debris to accumulate at the connection point of the drainage pipe, further exacerbating the risk of leakage.

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

[0005] In order 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 the technical problem is: an anti-leakage connection device for urban drainage pipes, comprising a connecting pipe, the connecting pipe being sleeved on the outside of the connecting ends of two drainage pipes to be connected, connecting rings being arranged at both ends of the connecting pipe, the connecting rings being fitted on the inner sides of the connecting ends, and a sealing pipe being connected between the connecting pipe and the connecting rings;

[0007] An annular air bag is provided at the middle part of the inner side of the connecting pipe, and the air bag contacts and seals with the inner sides of the two sealing tubes after being inflated. An adjustment layer is provided at the bottom of the air bag, and two auxiliary air bags are connected to the outer side of the adjustment layer. The auxiliary air bags are laid on the inner bottom of the drainage pipe to be connected, and a detection plate is connected to the middle part of the air bag. A detection rod is provided inside the detection plate, and the lower end of the detection rod passes through the connecting pipe and is buried downward in the soil layer. A pull rope is connected to the upper end of the detection rod, and a gas release component is connected to the outer end of the pull rope. Two vertical baffles are provided on the upper inner side of the adjustment layer. When the connecting pipe is tilted, the detection rod drives the detection plate to deflect, and pulls the gas release component through the pull rope to inflate the auxiliary air bag located on the lower side of the connecting pipe to fill the gap between the drainage pipe and the connecting pipe to avoid garbage retention.

[0008] As an optimization, an inflation tube is provided on the top of the airbag, and the outer end of the inflation tube is located outside the connecting tube;

[0009] A mounting hole is formed at the bottom of the connecting pipe. The diameter of the mounting hole is larger than the diameter of the detection rod. The detection rod passes through the mounting hole without contacting the mounting hole.

[0010] As an optimization, the outer ring of the airbag is glued and fixed to the inner wall of the connecting pipe, and the inner ring of the airbag is an inwardly convex arc surface. After the airbag is inflated, it is tightly pressed against the end of the drain pipe to be connected;

[0011] The regulating layer is a semicircular cavity, the regulating layer is sealed and separated from the interior of the airbag, and a through hole is provided at the connection between the regulating layer and the auxiliary airbag.

[0012] 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 connecting channels are provided between the lower end of the baffle and the bottom of the adjustment layer, and between the detection plate and the top of the adjustment layer. When the detection plate is deflected, the detection plate contacts one of the baffles, separating the adjustment layer to form two relatively sealed cavities.

[0013] As an optimization, the upper end of the detection plate and the lower end of the baffle are configured with cylindrical sealing ends, the detection plate is made of rubber, and the detection rod is located in the middle of the detection plate;

[0014] A threading hole is provided on the upper portion of the baffle, the gas release assembly is located on a side of the baffle away from the detection plate, the pull rope is passed through the threading hole, and the number of the pull ropes is the same as the number of the auxiliary air bags.

[0015] As an optimization, the gas release assembly includes a release box, powder, and reaction liquid. A separation membrane is provided inside the release box, the pull rope is connected to the separation membrane, the powder is filled on the upper side of the separation membrane, and the reaction liquid is filled on the lower side of the separation membrane. After the powder and the reaction liquid are mixed, they react to generate gas.

[0016] The top of the release box is provided with an air hole, through which the gas is released outwards after being generated.

[0017] As an optimization, the connecting ring is hard, and the sealing tube is made of elastic sealing material. When the drain pipe to be connected is connected to the connecting pipe, the sealing tube is wrapped around the end of the drain pipe to be connected, and the sealing tube is in contact and sealed with the airbag.

[0018] As an optimization, the powder is sodium bicarbonate or sodium carbonate, and the reaction liquid is hydrochloric acid or acetic acid.

[0019] The beneficial effects of this program are as follows:

[0020] By setting up auxiliary air bags, the sealing effect of the connection of the drainage pipe to be connected is improved. When the connecting pipe is tilted, the detection rod and the detection plate can trigger the gas release component to inflate the auxiliary air bag on the lower side, automatically filling the low-lying part of the pipe connection, avoiding the accumulation of garbage and debris, reducing the risk of blockage, and effectively preventing leakage and garbage accumulation;

[0021] Connecting rings and sealing tubes are provided at both ends of the connecting tube. When the airbag is inflated, it contacts the inner side of the sealing tube to form a double sealing structure, which significantly improves the anti-leakage ability of the connection.

[0022] The device adopts a modular design. The airbag, adjustment layer and auxiliary airbag components work together. It does not require external power and relies solely on mechanical structure and chemical reaction to achieve its function. It has low maintenance costs and a long service life.

[0023] The device is suitable for connecting drainage pipes of different diameters and materials. It is easy to install and can be widely used in new construction or renovation projects of urban drainage systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axial side schematic diagram of the present invention.

[0025] Figure 2 It is a main schematic diagram of the present invention.

[0026] Figure 3 For the present invention Figure 2 AA cross-section structure diagram.

[0027] Figure 4 This is a schematic diagram of the connecting pipe status during ground subsidence according to the present invention.

[0028] Figure 5 Schematic diagram of the internal structure of the gas release component of the present invention.

[0029] Figure 6 For the present invention Figure 3 Schematic diagram of the enlarged structure of part A.

[0030] Among them, 1. connecting pipe, 2. drainage pipe to be connected, 3. connecting ring, 4. sealing tube, 5. air bag, 6. adjustment layer, 7. auxiliary air bag, 8. detection plate, 9. detection rod, 10. pull rope, 11. baffle, 12. inflation tube, 13. mounting hole, 14. through hole, 15. sealing end, 16. threading hole, 17. release box, 18. powder, 19. reaction liquid, 20. separation membrane, 21. air hole. DETAILED DESCRIPTION

[0031] like Figures 1-6 As 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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;

[0038] A mounting hole 13 is formed at the bottom of the connecting pipe 1 . The diameter of the mounting hole 13 is larger than the diameter of the detection rod 9 . The detection rod 9 passes through the mounting hole 13 without contacting the mounting hole 13 .

[0039] The inflation tube 12 is provided with a sealing cover, and the inflation tube 12 can be inflated by an external air pump, and the inflation pressure is 0.1-0.3 MPa.

[0040] The detection rod 9 is sealedly connected to the airbag 5, and a reinforcement structure is provided at the lower end of the detection rod 9 to increase the contact area between the detection rod 9 and the soil.

[0041] like Figure 3 and Figure 6 As shown, the outer ring of the airbag 5 is fixed to the inner wall of the connecting pipe 1, and the inner ring of the airbag 5 is an inwardly convex arc surface. After the airbag 5 is inflated, it is tightly pressed against the end of the drain pipe 2 to be connected;

[0042] The adjustment layer 6 is a semicircular cavity, and is sealed and separated from the interior of the airbag 5 . A through hole 14 is provided at the connection between the adjustment layer 6 and the auxiliary airbag 7 .

[0043] After being inflated, the airbag 5 does not affect the flow of sewage inside the drainage pipe 2 to be connected, and can tightly seal the two drainage pipes 2 to be connected.

[0044] like Figure 6 As shown, the two vertical baffles 11 are symmetrically arranged along the vertical center line of the adjustment layer 6, and 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 is deflected, the detection plate 8 contacts one of the baffles 11, separating the adjustment layer 6 into two relatively sealed cavities.

[0045] When the detection plate 8 is in contact and sealed with the baffle 11 , the gas is released from the release box 17 , and the gas enters the auxiliary air bag 7 through the through hole 14 , thereby inflating the auxiliary air bag 7 .

[0046] like Figure 6 As shown, the upper end of the detection plate 8 and the lower end of the baffle 11 are provided with a cylindrical sealing end 15, the detection plate 8 is made of rubber, and the detection rod 9 is located in the middle of the detection plate 8;

[0047] A threading hole 16 is provided on the upper portion 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 set through the threading hole 16. The number of the pull ropes 10 is the same as the number of the auxiliary air bags 7.

[0048] When one of the drain pipes 2 to be connected sinks, a difference in height appears between the ends of the two drain pipes 2 to be connected. The sunken drain pipe 2 to be connected causes the connecting pipe 1 to tilt. When the connecting pipe 1 tilts, since the detection rod 9 is always in a vertical state, the detection rod 9 drives the detection plate 8 to deflect, and the detection plate 8 pulls the pull rope 10 to cause the gas release assembly to release gas.

[0049] like Figure 5 As shown, the gas release assembly includes a release box 17, a powder 18 and a reaction liquid 19. A separation membrane 20 is provided inside the release box 17. The pull rope 10 is connected to the separation membrane 20. The powder 18 is filled on the upper side of the separation membrane 20, and the reaction liquid 19 is filled on the lower side of the separation membrane 20. The powder 18 and the reaction liquid 19 react to generate gas after mixing.

[0050] The top of the release box 17 is provided with an air hole 21 , through which the gas is released outwards after being generated.

[0051] Powder 18 is sodium bicarbonate or sodium carbonate, and reaction liquid 19 is hydrochloric acid or acetic acid. Alternatively, powder 18 may be an ammonium salt, and reaction liquid 19 may be sodium hydroxide solution. The reaction between powder 18 and reaction liquid 19 is sufficient as long as the release of a relatively safe gas is achieved. During production, appropriate materials can be selected for filling.

[0052] like Figure 3 As shown, the connecting ring 3 is hard, and the sealing tube 4 is made of elastic sealing material. When the drain pipe 2 to be connected is connected to the connecting pipe 1, the sealing tube 4 is covered on the end of the drain pipe 2 to be connected, and the sealing tube 4 is in contact and sealed with the airbag 5.

[0053] Directions:

[0054] During initial installation, seal the connection ring 3 with the drain pipe 2 to be connected, and push the two drain pipes 2 to be connected until the ends of the two drain pipes 2 to be connected extend into the interior of the connecting pipe 1;

[0055] The air bag 5 is inflated through the inflation tube 12 so that the air bag 5 expands and comes into close contact with the inner side of the sealing can, thereby forming a primary sealing layer.

[0056] 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 located on the upper side. At the same time, the detection plate 8 pulls the pull rope 10 to move, and the pull rope 10 pulls the separation membrane 20 upward, causing the powder 18 to contact the reaction liquid 19. The powder 18 and the reaction liquid 19 release gas after reaction. The gas is released outward through the through hole 14, inflating the auxiliary air bag 7. After inflation, the auxiliary air bag 7 expands and fills the low-lying area between the connecting pipe 1 and the drainage pipe 2 to be connected;

[0057] After the auxiliary air bag 7 is inflated, the bottom gap between the drainage pipes 2 to be connected can be raised to prevent garbage accumulation. At the same time, the air bag 5 can continuously provide radial pressure to compensate for pipe misalignment.

[0058] The length and burial depth of the detection rod 9 of the present application are adjustable to adapt to the settlement speed of different soil types. For example, the burial depth can be increased in soft soil areas. The airbag 5 and the auxiliary airbag 7 are made of aging-resistant rubber and have a long service life.

[0059] The above-mentioned 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 form and style of the above-mentioned specific embodiments. Any urban drainage pipe anti-leakage connection device that complies with the claims of the present invention and any appropriate changes or modifications made thereto by ordinary technicians in the corresponding technical field shall fall within the patent protection scope of the present invention.

Claims

1. A leakage-proof connection device for urban drainage pipes, comprising a connection pipe (1), wherein the connection pipe (1) is sleeved on the outside of the connection ends of two drainage pipes (2) to be connected, and characterized in that: Both ends of the connecting tube (1) are provided with connecting rings (3), the connecting rings (3) are arranged on the inner sides of the connecting ends, and a sealing tube (4) is connected between the connecting tube (1) and the connecting rings (3); The middle part of the inner side of the connecting pipe (1) is provided with an annular air bag (5), and the air bag (5) contacts and seals the inner sides of the two sealing pipes (4) after being inflated. The bottom of the air bag (5) is provided with an adjustment layer (6), and the outer side of the adjustment layer (6) is connected to two auxiliary air bags (7). The auxiliary air bags (7) are laid on the inner bottom of the drainage pipe (2) to be connected. The middle part of the air bag (5) is connected with a detection plate (8), and the interior of the detection plate (8) is provided with a detection rod (9). The lower end of the detection rod (9) passes through the connecting pipe (1). ) is buried downward in the soil layer, the upper end of the detection rod (9) is connected to a pull rope (10), the outer end of the pull rope (10) is connected to a gas release component, and two vertical baffles (11) are provided on the inner upper part of the adjustment layer (6). When the connecting pipe (1) is tilted, the detection rod (9) drives the detection plate (8) to deflect, and pulls the gas release component through the pull rope (10), so that the auxiliary air bag (7) located on the lower side of the connecting pipe (1) is inflated to fill the gap between the drainage pipe and the connecting pipe (1) to avoid garbage retention; 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); a communication channel is 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) is deflected, the detection plate (8) contacts one of the baffles (11), separating the adjustment layer (6) into two relatively sealed cavities.

2. The anti-leakage connection device for urban drainage pipes according to claim 1, characterized in that: An inflation tube (12) is provided on the top of the air bag (5), and the outer end of the inflation tube (12) is located outside the connecting tube (1); A mounting hole (13) is provided at the bottom of the connecting pipe (1); the diameter of the mounting hole (13) is larger than the diameter of the detection rod (9); the detection rod (9) passes through the mounting hole (13) without contacting the mounting 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 glued and fixed to the inner wall of the connecting pipe (1), and the inner ring of the airbag (5) is an inwardly convex arc surface. After the airbag (5) is inflated, it is tightly pressed against the end of the drain pipe (2) to be connected; The regulating layer (6) is a semicircular cavity, the regulating layer (6) is sealed and separated from the interior of the airbag (5), and a through hole (14) is provided at the connection between the regulating layer (6) and the auxiliary airbag (7).

4. The anti-leakage connection device for urban drainage pipes according to claim 1, characterized in that: The upper end of the detection plate (8) and the lower end of the baffle (11) are provided with cylindrical sealing ends (15), the detection plate (8) is made of rubber, and the detection rod (9) is located in the middle of the detection plate (8); A threading hole (16) is provided on the upper portion 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 passed through the threading hole (16), and the number of the pull ropes (10) is the same as the number of the auxiliary air bags (7).

5. 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), a powder (18) and a reaction liquid (19); a separation membrane (20) is provided inside the release box (17); the pull rope (10) is connected to the separation membrane (20); the powder (18) is filled on the upper side of the separation membrane (20); the reaction liquid (19) is filled on the lower side of the separation membrane (20); the powder (18) and the reaction liquid (19) react to generate gas after mixing; The top of the release box (17) is provided with an air hole (21), and the gas is released outward through the air hole (21) after being generated.

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

7. The anti-leakage connection device for urban drainage pipes according to claim 5, characterized in that: The powder (18) is sodium bicarbonate or sodium carbonate, and the reaction liquid (19) is hydrochloric acid or acetic acid.

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