A municipal heating, ventilation, and plumbing pipeline leak-proof structure

Abstract

This utility model relates to the field of municipal engineering technology and discloses a leak-proof structure for municipal HVAC water supply and drainage pipes. It includes two fixing rings, each with a fixing seat fixedly connected to both sides. A housing is disposed between the two fixing seats on the same side. A locking ring is threadedly connected to the outer side of the housing, and a sliding rod is slidably connected inside the housing. A connecting seat is fixedly connected to the outer side of the sliding rod, and a spring is fixedly connected to the outer side of the connecting seat. A sealing component is disposed inside the fixing rings. In this utility model, pushing the sliding rod moves the connecting seat, compressing the spring and causing the fixing bracket and baffle to move. After the baffle contacts the housing, it rotates around the fixing rod, the torsion spring stores force and contracts, pushing the housing through the fixing seat. After the baffle passes, the sliding rod is released, the spring rebounds and resets, the baffle is released from constraint, and the torsion spring resets, causing it to abut against the fixing seat. The spring force reinforces the structure, achieving initial fixation of the housing and effective fit of the fixing rings to the leaking pipe.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering technology, and in particular to a leak-proof structure for municipal heating, ventilation, air conditioning and drainage pipes. Background Technology

[0002] Municipal heating, ventilation, air conditioning and drainage pipes, as the city's vascular system, are key components in buildings and municipal infrastructure responsible for the transportation of hot and cold media, and the supply and discharge of domestic and industrial water. Their leak-proof structure, through the dual protection of sealing materials and structural form, blocks the fluid leakage path, which is crucial to ensuring the stable operation of the system.

[0003] Currently, municipal HVAC water supply and drainage pipelines face significant challenges in connection and sealing: disassembly of connection structures is inconvenient, often requiring substantial time and manpower for repair or replacement, severely impacting project efficiency; while sealing structures rely heavily on the elasticity of sealing rings for sealing, which not only fails to achieve a perfect fit under special circumstances such as minor pipeline deformation or installation errors, but also tends to age and lose performance over time, easily leading to leaks due to inadequate sealing. These problems not only increase maintenance costs but may also affect system operation, becoming a major factor restricting the efficiency of municipal pipeline projects. Therefore, this paper proposes a leak-proof structure for municipal HVAC water supply and drainage pipelines to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a leak-proof structure for municipal HVAC water supply and drainage pipes, aiming to improve the problems of inconvenient connection and disassembly and easy leakage of municipal HVAC water supply and drainage pipes.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a leak-proof structure for municipal heating, ventilation, air conditioning and drainage pipes, comprising two fixing rings, each fixing ring having a fixing seat fixedly connected to both sides, a housing being provided between the two fixing seats on the same side, a locking ring being threadedly connected to the outer side of the housing, a sliding rod being slidably connected inside the housing, a connecting seat being fixedly connected to the outer side of the sliding rod, a spring being fixedly connected to the outer side of the connecting seat, a connecting rod being fixedly connected to the outer side of the connecting seat, multiple fixing brackets being fixedly connected to the outer side of the connecting seat, a fixing rod being fixedly connected to the outer side of the fixing brackets, a torsion spring being sleeved on the outer side of the fixing rod, a baffle being rotatably connected to the outer side of the fixing rod, and a sealing assembly being provided inside the fixing rings.

[0006] As a further description of the above technical solution:

[0007] The sealing assembly includes an airbag, an air passage fixedly connected to the outside of the airbag, a valve three fixedly connected to the outside of the air passage, a support frame fixedly connected to the outside of the fixing ring, a valve two fixedly connected to the outside of the air passage, an inflatable ball fixedly connected to the outside of the valve two, a valve one fixedly connected to the outside of the inflatable ball, a sealing gasket fixedly connected to the inner wall of the airbag, a pipe fixedly connected between the two sealing gaskets, and multiple air outlet valves fixedly connected to the outside of the airbag.

[0008] As a further description of the above technical solution:

[0009] The side of the spring away from the baffle is fixedly connected inside the housing, and the connecting seat is slidably connected inside the housing.

[0010] As a further description of the above technical solution:

[0011] One end of the torsion spring is fixedly connected to the outside of the fixed frame, and the other end of the torsion spring is fixedly connected to the outside of the baffle.

[0012] As a further description of the above technical solution:

[0013] The connecting rod is slidably connected inside the housing.

[0014] As a further description of the above technical solution:

[0015] The baffle abuts against the fixed seat, and the locking ring abuts against the fixed seat.

[0016] As a further description of the above technical solution:

[0017] A handle is fixedly connected to the outside of the housing, and the slide rod is slidably connected to the outside of the handle.

[0018] As a further description of the above technical solution:

[0019] The airbag is fixedly connected to the inner wall of the fixing ring, and the air passage is located inside the support frame.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by pushing the sliding rod, the connecting seat is moved, causing the spring to compress. At the same time, the fixing frame and the baffle move accordingly. After the baffle contacts the outer shell, it rotates around the fixing rod. The torsion spring deforms and stores force, and the baffle is in a contracted state, pushing the outer shell through the fixing seat. After the baffle passes through, the sliding rod is released, the spring rebounds and the connecting seat is reset, the baffle is released from the constraint, and the torsion spring resets and causes the baffle to abut tightly against the fixing seat. The spring thrust is further strengthened, and the outer shell is initially fixed. The locking ring is tightened and abuts against the fixing seat, forming a double fixation with the baffle. Finally, the outer shell is stably installed on the outside of the fixing seat, realizing the effective fit of the fixing ring to the leaking pipe, as well as the rapid and stable fixing and convenient disassembly of the structure.

[0022] 2. In this utility model, the air passage is opened by closing the air outlet valve and loosening valve three; the airbag is inflated by pressing the inflation ball. Valve one prevents gas backflow, and valve two prevents air from flowing in backward. Air enters the airbag through the air passage, making the sealing gasket fit tightly against the pipe and blocking the leakage path. After inflation, valve three is tightened to prevent air leakage and maintain the seal. When not in use, the air outlet valve is opened after removing the fixing ring, and the gas in the airbag is released by pressing the sealing gasket, thus completing the deflation. This achieves precise adaptation to minor pipe deformation and installation errors, as well as effective compensation for sealing performance after the sealing ring ages and fails. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a leak-proof structure for municipal heating, ventilation, air conditioning and drainage pipes proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of an inflatable balloon for a leak-proof structure of municipal heating, ventilation, air conditioning and drainage pipes proposed in this utility model;

[0025] Figure 3 This is a cross-sectional schematic diagram of the outer shell of a leak-proof structure for municipal heating, ventilation, air conditioning and drainage pipes proposed in this utility model;

[0026] Figure 4 This is an exploded three-dimensional schematic diagram of a baffle for a pipe leak-proof structure for municipal heating, ventilation and drainage systems proposed in this utility model.

[0027] Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0028] Legend:

[0029] 1. Pipeline; 2. Fixing ring; 3. Airbag; 4. Sealing gasket; 5. Fixing seat; 6. Outer shell; 7. Handle; 8. Slide rod; 9. Locking ring; 10. Connecting seat; 11. Baffle; 12. Fixing frame; 13. Torsion spring; 14. Fixing rod; 15. Connecting rod; 16. Spring; 17. Valve 1; 18. Inflatable ball; 19. Valve 2; 20. Air passage; 21. Support frame; 22. Air outlet valve; 23. Valve 3. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1-5This utility model provides an embodiment of a leak-proof structure for municipal heating, ventilation, air conditioning and drainage pipes, comprising two fixing rings 2, with fixing seats 5 fixedly connected to both sides of each fixing ring 2. A housing 6 is disposed between the two fixing seats 5 on the same side. A locking ring 9 is threadedly connected to the outer side of the housing 6. A sliding rod 8 is slidably connected inside the housing 6. A connecting seat 10 is fixedly connected to the outer side of the sliding rod 8. A spring 16 is fixedly connected to the outer side of the connecting seat 10. A connecting rod 15 is fixedly connected to the outer side of the connecting seat 10. Multiple fixing brackets 12 are fixedly connected to the outer side of the connecting seat 10, and fixing rods 14 are fixedly connected to the outer side of each fixing bracket 12. A torsion spring 13 is sleeved on the outside of the fixing rod 14, and a baffle 11 is rotatably connected to the outside of the fixing rod 14. A sealing component is installed inside the fixing ring 2. The fixing ring 2 provides an installation base for the sealing component and the fixing seat 5. By cooperating with other components, the leak-proof structure is stably fixed on the pipe 1. The fixing seat 5 serves as the fixing fulcrum of the outer shell 6, providing a base for the baffle 11 and the locking ring 9 to abut. It is the key stress point for the connection between the outer shell 6 and the fixing ring 2. The outer shell 6 provides installation space and protection for the internal components, and at the same time serves as the main structure connecting the fixing seat 5. After the locking ring 9 is tightened, it abuts against the fixing seat 5 and the baffle 11. Plate 11 forms a double fixation, enhancing the stability of the connection between the outer shell 6 and the fixed seat 5 and preventing loosening after long-term use. The slide rod 8 drives the connecting seat 10 to move, realizing the contraction and reset control of the baffle 11. The connecting seat 10 transmits the force of the slide rod 8 to the baffle 11, ensuring that all components work together to complete the contraction and reset actions. The spring 16 provides a rebound thrust to push the connecting seat 10 after being compressed. The connecting rod 15 assists the connecting seat 10 to maintain horizontal movement and prevents the connecting seat 10 from tilting and jamming. The fixing frame 12 provides support for the fixing rod 14 and the baffle 11, ensuring the stability of the baffle 11 when rotating. The fixed rod 14 serves as the rotation axis of the baffle 11, connecting the fixed frame 12 and the baffle 11 to ensure that the baffle 11 rotates flexibly and stably, providing a mounting fulcrum for the torsion spring 13. The torsion spring 13 provides elastic restoring force to the baffle 11, so that the baffle 11 automatically abuts against the fixed seat 5 when no external force is applied. The baffle 11 abuts against the fixed seat 5 through the action of the torsion spring 13 and the spring 16. Its rotatable characteristic makes it easy for the housing 6 to pass through the fixed seat 5 during installation, and automatically resets and abuts after installation, realizing the rapid fixation of the housing 6 and the fixed seat 5. The sealing assembly achieves a tight fit with the pipe 1 through the airbag 3 and the sealing gasket 4.

[0032] The sealing assembly includes an airbag 3, with an air passage 20 fixedly connected to the outside of the airbag 3. A valve 23 is fixedly connected to the outside of the air passage 20. A support frame 21 is fixedly connected to the outside of the fixing ring 2. A valve 19 is fixedly connected to the outside of the air passage 20. An inflatable ball 18 is fixedly connected to the outside of the valve 19. A valve 17 is fixedly connected to the outside of the inflatable ball 18. A sealing gasket 4 is fixedly connected to the inner wall of the airbag 3. A pipe 1 is fixedly connected between the two sealing gaskets 4. Multiple air outlet valves 22 are fixedly connected to the outside of the airbag 3. The airbag 3 is the core component of the sealing assembly. After inflation, it can expand and deform to accommodate minor deformations or installation errors in the pipe 1, tightly fitting the inner wall of the pipe 1. The air passage 20 serves as a gas delivery channel, ensuring smooth gas flow. The valve 23, when closed after inflation, blocks the air release path of the airbag 3, preventing gas leakage and ensuring the airbag 3 remains in an inflated and sealed state for an extended period. The support frame 21 is detachable. The structure is disassembled to accommodate and fix the air passage 20, providing structural support and protection for the air passage 20 to prevent it from being damaged by pressure. Valve 29 controls the flow of gas from the inflation ball 18 to the air passage 20, preventing gas from flowing back to the inflation ball 18 and ensuring that gas enters the airbag 3 efficiently during inflation. The inflation ball 18 can be manually pressed to inflate the airbag 3 without the need for additional inflation equipment, making it easy to operate and meeting the convenience requirements of on-site construction. Valve 17 controls the inflation direction, allowing only air to enter the inflation ball 18 to prevent gas backflow during inflation. The sealing gasket 4 is in direct contact with the pipe 1. When the airbag 3 inflates, it drives the sealing gasket 4 to simultaneously and tightly adhere to the pipe 1, forming a double seal of the airbag 3 and the sealing gasket 4. The pipe 1, as the basic carrier for fluid transportation, is the object of protection of the leak-proof structure. The air release valve 22 is used to release the airbag 3, facilitating the release of gas inside the airbag 3 when the sealing components are disassembled or repaired.

[0033] The side of the spring 16 away from the baffle 11 is fixedly connected to the inside of the housing 6, and the connecting seat 10 is slidably connected to the inside of the housing 6. The elastic force of the spring 16 can stably act on the connecting seat 10, ensuring that the connecting seat 10 can obtain continuous thrust when sliding inside the housing 6, so as to make the baffle 11 and the fixed seat 5 tightly abut against each other. The connecting seat 10 provides room for the contraction and reset of the baffle 11, making the fixing operation more flexible.

[0034] One end of the torsion spring 13 is fixedly connected to the outside of the fixed frame 12, and the other end of the torsion spring 13 is fixedly connected to the outside of the baffle 11. The two ends of the torsion spring 13 are fixed respectively, which can stably accumulate elastic potential energy when the baffle 11 rotates. After the external force is removed, it can accurately drive the baffle 11 to reverse and reset, ensuring that the baffle 11 and the fixed seat 5 are tightly fitted.

[0035] The connecting rod 15 is slidably connected inside the housing 6. The connecting rod 15 helps the connecting seat 10 to maintain horizontal movement and prevents the connecting seat 10 from tilting due to force on one side.

[0036] The baffle 11 and the fixed seat 5 abut together, and the locking ring 9 and the fixed seat 5 abut together. The abutment between the baffle 11 and the fixed seat 5 achieves initial fixation, and the abutment between the locking ring 9 and the fixed seat 5 forms secondary reinforcement. The double abutment structure greatly improves the connection strength between the outer shell 6 and the fixed seat 5, and effectively prevents loosening caused by vibration, pressure and other factors after long-term use.

[0037] A handle 7 is fixedly connected to the outside of the outer shell 6, and a slide bar 8 is slidably connected to the outside of the handle 7. The handle 7 provides a gripping point for the operator, making it easy to move or adjust the position of the outer shell 6 and reducing the manpower consumption during installation or disassembly. The slide bar 8 slides on the outside of the handle 7, allowing the operator to directly control the slide bar 8 through the handle 7, simplifying the operation process of retracting the baffle 11.

[0038] The airbag 3 is fixedly connected to the inner wall of the fixing ring 2, and the air passage 20 is set inside the support frame 21. The airbag 3 can be precisely fitted to the pipe 1 with the fixing ring 2, ensuring that the airbag 3 can directly act on the leak point of the pipe 1 after inflation. The support frame 21 can protect the air passage 20, prevent the air passage 20 from being squeezed and damaged by external force, and fix the position of the air passage 20 to ensure a stable gas delivery path from the inflation ball 18 to the airbag 3.

[0039] Working principle:

[0040] When pipe 1 leaks, a leak-proof operation can be implemented using the fixing ring 2: First, the fixing ring 2 is tightly fitted to the surface of pipe 1. Then, the fixing seat 5 and the outer shell 6 are used to initially position the fixing ring 2. During operation, pushing the sliding rod 8 can drive the connecting seat 10 to move. The connecting seat 10 causes the connecting rod 15 to slide and compresses the spring 16, while simultaneously driving the fixing frame 12 and the baffle 11 to move synchronously. After the baffle 11 slides and contacts the outer shell 6, it will rotate around the fixing rod 14, causing the torsion spring 13 to undergo torsional deformation and accumulate elastic potential energy. At this time, the baffle 11 is in a contracted state. In the retracted state, the outer shell 6 is pushed through the fixed seat 5. After the baffle 11 has completely passed through the fixed seat 5, the slide rod 8 is released, the spring 16 rebounds and pushes the connecting seat 10 to reset. The baffle 11 is released from the constraint of the outer shell 6. The torsion spring 13 releases its elastic potential energy to drive the baffle 11 to rotate in the opposite direction and reset, so that it is in close contact with the fixed seat 5. The continuous thrust of the spring 16 further ensures the contact state of the baffle 11, thereby achieving the initial fixation of the outer shell 6. Finally, the locking ring 9 is tightened to make it abut against the fixed seat 5, forming a double fixing structure with the baffle 11, and finally achieving the stable installation of the outer shell 6 on the outside of the fixed seat 5.

[0041] When there is slight deformation or installation error in pipe 1, causing the sealing ring to fail to fit completely with pipe 1, or when it fails due to aging after long-term use, the sealing performance can be enhanced by the following operation: close the air outlet valve 22 and loosen valve 3 23 to open the air passage 20; press the inflation ball 18 to inflate the airbag 3, where valve 1 17 controls the air inflow in one direction to prevent gas from flowing back from the inflation ball 18, and valve 2 19 controls the gas outflow in one direction to prevent air from flowing back into the inflation ball 18. The air is guided into the airbag 3 through the air passage 20, so that the sealing gasket 4 fits tightly against the surface of pipe 1, thereby blocking the leakage path of pipe 1. After inflation, tighten valve 3 23 to prevent gas from overflowing and maintain the sealing state. When the tool is not needed, first remove the fixing ring 2 from the outside of pipe 1 through the outer shell 6, then open the air outlet valve 22 and press the sealing gasket 4 to release the gas in the airbag 3, completing the deflation operation.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A leak-proof structure for municipal heating, ventilation, air conditioning and drainage pipes, comprising two fixing rings (2), characterized in that: The fixed ring (2) is fixedly connected to fixed seats (5) on both sides. A housing (6) is provided between the two fixed seats (5) on the same side. A locking ring (9) is threadedly connected to the outer side of the housing (6). A slide rod (8) is slidably connected inside the housing (6). A connecting seat (10) is fixedly connected to the outer side of the slide rod (8). A spring (16) is fixedly connected to the outer side of the connecting seat (10). A connecting rod (15) is fixedly connected to the outer side of the connecting seat (10). Multiple fixing frames (12) are fixedly connected to the outer side of the connecting seat (10). A fixing rod (14) is fixedly connected to the outer side of the fixing frame (12). A torsion spring (13) is sleeved on the outer side of the fixing rod (14). A baffle (11) is rotatably connected to the outer side of the fixing rod (14). A sealing component is provided inside the fixed ring (2).

2. The leak-proof structure for municipal heating, ventilation, air conditioning and drainage pipes according to claim 1, characterized in that: The sealing assembly includes an airbag (3), an air passage (20) is fixedly connected to the outside of the airbag (3), a valve three (23) is fixedly connected to the outside of the air passage (20), a support frame (21) is fixedly connected to the outside of the fixing ring (2), a valve two (19) is fixedly connected to the outside of the air passage (20), an inflatable ball (18) is fixedly connected to the outside of the valve two (19), a valve one (17) is fixedly connected to the outside of the inflatable ball (18), a sealing gasket (4) is fixedly connected to the inner wall of the airbag (3), a pipe (1) is fixedly connected between the two sealing gaskets (4), and multiple air outlet valves (22) are fixedly connected to the outside of the airbag (3).

3. The leak-proof structure for municipal heating, ventilation, air conditioning and drainage pipes according to claim 1, characterized in that: The spring (16) is fixedly connected to the inside of the housing (6) on the side away from the baffle (11), and the connecting seat (10) is slidably connected to the inside of the housing (6).

4. A leak-proof structure for municipal heating, ventilation, air conditioning and drainage pipes according to claim 1, characterized in that: One end of the torsion spring (13) is fixedly connected to the outside of the fixed frame (12), and the other end of the torsion spring (13) is fixedly connected to the outside of the baffle (11).

5. A leak-proof structure for municipal heating, ventilation, air conditioning and drainage pipes according to claim 1, characterized in that: The connecting rod (15) is slidably connected inside the outer casing (6).

6. A leak-proof structure for municipal heating, ventilation, air conditioning and drainage pipes according to claim 1, characterized in that: The baffle (11) and the fixed seat (5) abut against each other, and the locking ring (9) and the fixed seat (5) abut against each other.

7. A leak-proof structure for municipal heating, ventilation, air conditioning and drainage pipes according to claim 1, characterized in that: A handle (7) is fixedly connected to the outside of the outer shell (6), and the slide rod (8) is slidably connected to the outside of the handle (7).

8. A leak-proof structure for municipal heating, ventilation, air conditioning and drainage pipes according to claim 2, characterized in that: The airbag (3) is fixedly connected to the inner wall of the fixed ring (2), and the air passage (20) is disposed inside the support frame (21).

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