A securely mounted airbag valve mechanism

Abstract

This utility model belongs to the technical field of sewage airbag valves, and discloses a securely installed airbag valve mechanism. Installed inside one end of a sewage pipe, it includes a housing with flange plate one and flange plate two at each end. The housing is inserted into the sewage pipe, with flange plate one tightly fitted against the end face of the sewage pipe. Several reinforcing pressure plates are evenly fixed to the end face of the sewage pipe near flange plate one using expansion bolts. This utility model achieves high-strength installation through a double-fixing structure: on one hand, flange plate one is rigidly connected to the end face of the sewage pipe through reinforcing pressure plates and expansion bolts, directly bearing the axial impact force of the water flow; on the other hand, the internal tensioning structure outside the housing uses driving bolts to push the lifting arc block radially to expand tightly against the inner wall of the pipe, forming radial fixation. This dual-fixing synergistic effect effectively prevents the equipment from loosening or falling off under the impact of water flow, making it particularly suitable for high-flow-rate pipeline scenarios.

Description

Technical Field

[0001] This utility model belongs to the field of sewage airbag valve technology, specifically relating to a securely installed airbag valve mechanism. Background Technology

[0002] With the development of urban drainage systems, pipe blocking and interception equipment is widely used in scenarios such as rainwater and sewage separation and emergency rescue. Currently, the mainstream hydraulic flow-limiting gate relies on a hydraulic system for drive, which is precise but has complex components and high cost. Flexible interception devices achieve flow interception by forming a pressurized chamber between a rubber sleeve and the outer shell, but their structural design results in high cost, making it difficult to meet the needs of budget-constrained or emergency scenarios.

[0003] While traditional airbag sealing mechanisms are relatively inexpensive, they suffer from key drawbacks: poor fixation between the airbag and the pipe wall, making it prone to slippage or even being washed out of the pipe under water flow impact, leading to sealing failure. Furthermore, some airbag installation structures lack specific sealing designs, making them susceptible to leakage during inflation and deflation, further reducing sealing reliability. Additionally, existing installation mechanisms have insufficient impact resistance, easily loosening after prolonged use due to repeated water flow impacts, resulting in frequent maintenance.

[0004] Therefore, there is an urgent need for a low-cost, securely installed, reliably sealed, and highly impact-resistant airbag sealing mechanism to solve the fixing problems and performance defects of traditional equipment and adapt to the needs of low-cost scenarios and emergency rescue. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a securely installed airbag valve mechanism to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A securely installed airbag valve mechanism is installed inside one end of a sewage pipe. It includes a housing with flange plate one and flange plate two at its two ends. The housing is inserted into the sewage pipe. Flange plate one is flush against the end face of the sewage pipe. Several reinforcing plates are evenly fixed to the end face of the sewage pipe and around the perimeter of flange plate one by expansion bolts. One end of each reinforcing plate presses against the surface of flange plate one. A rubber airbag is installed along the length of the housing. The two ends of the rubber airbag are sealed and fixed to the two ends of the housing by two sets of sealing installation structures. The outer surface of the airbag and the inner surface of the housing form an inner sealed space for inflation and deflation. An inner tensioning structure is fitted onto the outside of the housing, flush against flange plate one. The inner tensioning structure is fastened to flange plate one by bolts and expands radially by bolt drive, internally tensioning between the inner wall of the sewage pipe and the outer wall of the housing.

[0008] In a preferred embodiment of this utility model, the internal tensioning structure includes multiple arc-shaped lifting blocks, several driving bolts, and a pushing ring. The multiple lifting blocks form a ring structure. One end of the outer surface of the pushing ring is conical. The shape of the inner surface of the ring structure matches the shape of the conical structure. Multiple elongated holes are evenly provided on the lifting blocks along the arc length direction. The driving bolts are movably connected to the elongated holes. Multiple threaded holes are evenly provided on the surface of the pushing ring corresponding to each of the elongated holes. The threaded portion of the driving bolt passes through the flange plate, the elongated holes, and the threaded holes in sequence. Each lifting block is internally tensioned on the inner surface of the sewage pipe by the pushing ring.

[0009] In a preferred embodiment of this utility model, the rubber airbag is an I-shaped cylindrical structure with an air inlet pipe at one end. The air inlet pipe is connected to the outside of the I-shaped cylindrical structure, and one end of the air inlet pipe passes through the flange plate and is connected to the air compressor.

[0010] In a preferred embodiment of this utility model, the sealing installation structure includes two pressure rings and two pressure rings. The two pressure rings are respectively sealed and welded to the inner surfaces of the flange plate and the flange plate. The two pressure rings are both sleeved on the outside of the rubber airbag. The two pressure rings are fastened to the flange plate and the flange plate by bolts. The skirt at the end of the rubber airbag is located between the pressure rings on the same side and the pressure rings on the same side. The skirt at the end of the rubber airbag is sealed by the pressure rings on the same side and the pressure rings engaging together.

[0011] In a preferred embodiment of this utility model, both the first pressure ring and the second pressure ring have a U-shaped cross-section, and the inner surface of the U-shaped structure is provided with a toothed structure near the opening.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Securely installed and highly impact-resistant.

[0014] High-strength installation is achieved through a dual-fixation structure: on one hand, the flange plate is rigidly connected to the end face of the sewage pipe through a reinforcing pressure plate and expansion bolts, directly bearing the axial impact force of the water flow; on the other hand, the internal tensioning structure outside the outer shell pushes the lifting arc block radially to expand through drive bolts, tightly fitting against the inner wall of the pipe to form radial fixation. The synergistic effect of the dual fixation effectively prevents the equipment from loosening or falling off under the impact of water flow, making it especially suitable for high-flow-rate pipeline scenarios.

[0015] 2. Reliable sealing and excellent plugging effect.

[0016] The rubber airbag adopts an I-shaped cylindrical structure, and multiple seals are achieved at both ends through a sealing installation structure: the first and second pressure rings form an interlocking fixation, and the airbag skirt is tightly clamped by a U-shaped cross section and toothed structure to ensure that there is no air leakage in the inner sealing space between the outer wall of the airbag and the inner wall of the outer shell; at the same time, the connection design between the air pipe and the air compressor equipment ensures the stability of air pressure during the inflation and deflation process, avoids sealing failure due to poor sealing, and improves the reliability of interception.

[0017] 3. Simple structure and low cost

[0018] Compared to the hydraulic system and complex flexible flow control device of hydraulic flow limiting gates, this mechanism mainly uses mechanical structure (flange, bolt, lifting arc block), which reduces the use of expensive hydraulic components or precision control components, significantly reducing manufacturing costs and making it suitable for scenarios with limited budgets and emergency rescue needs.

[0019] 4. Easy to operate and highly adaptable

[0020] The internal tensioning structure allows for the expansion and contraction of the lifting arc block via drive bolts, eliminating the need for complex tools during installation and disassembly. The rubber airbag is inflated and deflated via an air hose connected to a conventional air compressor, allowing for precise pressure control with a pressure gauge to meet the sealing needs of pipes of varying diameters. Furthermore, the modular design of the sealing installation structure facilitates future maintenance and component replacement, extending the equipment's lifespan.

[0021] 5. Dynamic adaptive impact

[0022] The conical push ring with internal tension structure and the arc-shaped lifting block form a self-locking effect: the greater the impact force of the water flow, the easier it is for the push ring to be squeezed to one side of the flange plate, which causes the lifting block to expand further radially and fit more tightly with the inner wall of the pipe, achieving a dynamic adaptive effect of "the greater the impact, the stronger the fixation", which greatly reduces the risk of loosening during long-term use. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional exploded structure diagram of the present invention;

[0025] Figure 3 A schematic diagram of a three-dimensional exploded structure with an internally tensioned structure;

[0026] Figure 4 This is a three-dimensional sectional view of the installation structure of this utility model;

[0027] Figure 5 for Figure 4Enlarged structural diagram at point A.

[0028] In the diagram: 100, outer casing; 101, flange plate one; 102, flange plate two; 200, rubber airbag; 201, air inlet pipe; 300, reinforcing pressure plate; 400, sealing installation structure; 401, pressure ring one; 402, pressure ring two; 500, sewage pipe; 600, internal tensioning structure; 601, push ring; 60101, threaded hole; 602, lifting arc block; 60201, oblong hole; 603, drive bolt. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Please refer to Figure 1-5 As shown, an embodiment of this application provides a securely installed airbag valve mechanism, installed inside one end of a sewage pipe 500. It includes a housing 100, with flange plate 101 and flange plate 102 respectively at both ends. The housing 100 is inserted into the sewage pipe 500. Flange plate 101 is tightly fitted against the end face of the sewage pipe 500. Several reinforcing pressure plates 300 are evenly fixed to the end face of the sewage pipe and around the perimeter of flange plate 101 using expansion bolts. One end of each reinforcing pressure plate 300 presses against the surface of flange plate 101. The interior of the housing 100... A rubber airbag 200 is provided along its length. The two ends of the rubber airbag 200 are sealed and fixed to the two ends of the outer shell 100 by two sets of sealing installation structures 400 respectively. The outer surface of the airbag and the inner surface of the outer shell 100 form an inner sealed space for inflation and deflation. An inner tensioning structure 600 is fitted on the outside of the outer shell 100. The inner tensioning structure 600 is set close to the flange plate 101. The inner tensioning structure 600 is fastened to the flange plate 101 by bolts and is driven by bolts to generate radial expansion and is internally tensioned between the inner wall of the sewage pipe 500 and the outer wall of the outer shell 100.

[0032] In a preferred embodiment of this utility model, the internal tensioning structure 600 further includes a plurality of arc-shaped lifting arc blocks 602, several driving bolts 603, and a pushing ring 601. The plurality of lifting arc blocks 602 form a ring structure. One end of the outer surface of the pushing ring 601 is a conical structure. The shape of the inner surface of the ring structure matches the shape of the conical structure. The lifting arc blocks 602 are evenly provided with a plurality of elongated holes 60201 along the arc length direction. The driving bolts 603 are movably connected to the elongated holes 60201. The surface of the pushing ring 601 is evenly provided with a plurality of threaded holes 60101 corresponding to each elongated hole 60201. The screw part of the driving bolt 603 passes through the flange plate 101, the elongated hole 60201, and the threaded hole 60101 in sequence. Each lifting arc block 602 is internally tensioned to the inner surface of the sewage pipe 500 by the pushing ring 601.

[0033] Specifically, such as Figure 1-3 As shown, to address the issue of equipment loosening, displacement, or even being ejected from the sewage pipe 500 due to excessive water impact when the airbag valve body is press-fitted solely by the reinforcing plate 300, the outer casing 100 is reinforced. For example, the flange plate 101 is fixedly installed to the end face of the sewage pipe 500 using expansion bolts. Simultaneously, an internal tensioning structure 600 is installed on the outside of the outer casing near the flange plate 101. By fixing the internal tensioning structure 600 to the flange plate 101 and utilizing the deformable structure of the internal tensioning structure 600, the sewage pipe 500 is internally tensioned, thereby strengthening the installation strength of the airbag valve, effectively improving its resistance to sewage impact, and significantly reducing the risk of loosening.

[0034] The internal tensioning structure 600 is configured with a push ring 601 and several lifting arc blocks 602 that are closely attached to each other to form a ring. One end of the push ring 601 is set in a conical shape. The shape of the inner ring wall of the ring structure composed of multiple lifting arc blocks 602 matches the conical structure. When the installer turns the drive bolt 603 sequentially from the outer flange plate 101 of the sewage pipe 500, the push ring 601, which is threaded to the drive bolt 603, will gradually change its posture and move closer to the flange plate 101. At the same time, it will squeeze each lifting arc block 602 through its conical end. At this time, the lifting arc block 602 will gradually approach the inner wall of the sewage pipe 500 under the drive of the conical surface of the push ring 601 until it is tightened. The outer shell 100 is fixed inside the sewage pipe 500 by each extended lifting arc block 602, thereby further increasing the installation firmness of the airbag valve and the sewage pipe 500.

[0035] On the other hand, when sewage impacts the lifting ring 601, it tends to push it further toward the flange plate 101, while the lifting arc block 602 tends to continue to expand outward. As a result, the greater the sewage impact force, the greater the tension force inside the lifting arc block 602. Therefore, after installation, this airbag valve can withstand alternating impacts from water flows of different impact forces without loosening or falling off.

[0036] In a preferred embodiment of the present invention, the rubber airbag 200 is further defined as an I-shaped cylindrical structure, with an air inlet pipe 201 at one end. The air inlet pipe 201 is connected to the outside of the I-shaped cylindrical structure, and one end of the air inlet pipe 201 extends through the flange plate 101 and is connected to the air compressor.

[0037] In a preferred embodiment of this utility model, the sealing installation structure 400 further includes two pressure rings 401 and two pressure rings 402. The two pressure rings 402 are respectively sealed and welded to the inner surfaces of flange plate 101 and flange plate 102. The two pressure rings 401 are both sleeved on the outside of the rubber airbag 200. The two pressure rings 401 are fastened to flange plate 101 and flange plate 102 respectively by bolts. The skirt at the end of the rubber airbag 200 is located between the pressure rings 401 and 402 on the same side. By the pressure rings 401 and 402 on the same side engaging with the skirt at the end of the rubber airbag 200, the seal between the outer wall of the rubber airbag 200 and the inner wall of the outer shell 100 is achieved.

[0038] In a preferred embodiment of the present invention, the cross-sections of the first pressure ring 401 and the second pressure ring 402 are both U-shaped, and the inner surface of the U-shaped structure is provided with a toothed structure near the opening.

[0039] Specifically, such as Figure 4-5 As shown, by sealing and welding the two pressure rings 402 to the flanges 101 and 102 at both ends of the outer shell 100 respectively, it is ensured that the weld is waterproof and airtight. The pressure rings 401 and 402 fit together to form a sealing structure by biting the skirt of the rubber airbag 200 from both the inner and outer sides, thereby forming a waterproof and airtight chamber between the outer surface of the rubber airbag 200 and the inner surface of the outer shell 100.

[0040] The air compressor fills the chamber with compressed air through the air inlet pipe 201. After the air bladder is compressed by the air pressure, the cylindrical channel is closed, thus closing the air bladder valve. By releasing the pressure, the rubber air bladder 200 returns to its original shape, thereby opening the air bladder valve.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A secure installation air bag valve mechanism installed at one end inside a sewage pipeline (500) comprising a housing (100), characterized in that: The outer casing (100) is provided with flange plate one (101) and flange plate two (102) at both ends respectively. The outer casing (100) is inserted into the sewage pipe (500). Flange plate one (101) is set close to the end face of the sewage pipe (500). Several reinforcing pressure plates (300) are evenly fixed around the end face of the sewage pipe and near the flange plate one (101) by expansion bolts. One end of the reinforcing pressure plate (300) presses against the surface of flange plate one (101). A rubber airbag (200) is provided inside the outer casing (100) along its length. The two ends of the airbag are sealed and fixed to the two ends of the outer shell (100) by two sets of sealing installation structures (400) respectively. The outer surface of the airbag forms an inner sealed space for inflation and deflation on the inner surface of the outer shell (100). An inner tensioning structure (600) is sleeved on the outside of the outer shell (100). The inner tensioning structure (600) is set close to the flange plate (101). The inner tensioning structure (600) is fastened to the flange plate (101) by bolts and is driven by bolts to generate radial expansion and is internally tensioned between the inner wall of the sewage pipe (500) and the outer wall of the outer shell (100).

2. The secure mounting airbag valve mechanism of claim 1, wherein: The internal tensioning structure (600) includes multiple arc-shaped lifting blocks (602), several driving bolts (603), and a pushing ring (601). The multiple lifting blocks (602) form a ring structure. One end of the outer surface of the pushing ring (601) is conical. The shape of the inner surface of the ring structure matches the shape of the conical structure. The lifting blocks (602) are evenly provided with multiple elongated holes (60201) along the arc length direction. The driving bolts (603) The push ring (601) is movably connected to the elongated hole (60201). The surface of the push ring (601) is evenly provided with multiple threaded holes (60101) corresponding to each of the elongated holes (60201). The screw part of the drive bolt (603) passes through the flange plate (101), the elongated hole (60201) and the threaded hole (60101) in sequence. Each of the lifting arc blocks (602) is pushed and internally tensioned on the inner surface of the sewage pipe (500) by the push ring (601).

3. The secure mounting airbag valve mechanism of claim 1, wherein: The rubber airbag (200) is an I-shaped cylindrical structure with an air inlet pipe (201) at one end. The air inlet pipe (201) is connected to the outside of the I-shaped cylindrical structure, and one end of the air inlet pipe (201) passes through the flange plate (101) and is connected to the air compressor.

4. The secure mounting airbag valve mechanism of claim 3, wherein: The sealing installation structure (400) includes two pressure rings (401) and two pressure rings (402). The two pressure rings (402) are respectively sealed and welded to the inner surfaces of the flange plate (101) and the flange plate (102). The two pressure rings (401) are both sleeved on the outside of the rubber airbag (200). The two pressure rings (401) are fastened to the flange plate (101) and the flange plate (102) respectively by bolts. The skirt at the end of the rubber airbag (200) is located between the pressure rings (401) and the pressure rings (402) on the same side. The skirt at the end of the rubber airbag (200) is sealed between the outer wall of the rubber airbag (200) and the inner wall of the outer shell (100) by the pressure rings (401) and the pressure rings on the same side engaging together.

5. The secure mounting airbag valve mechanism of claim 4, wherein: Both the first pressure ring (401) and the second pressure ring (402) have a U-shaped cross-section, and the inner surface of the U-shaped structure is provided with a toothed structure near the opening.

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