An angle-adjustable water supply and drainage pipe connection structure

Abstract

This utility model relates to the field of drainage pipe technology, and in particular to an angle-adjustable water supply and drainage pipe connection structure, including a first hemispherical shell, inside which a second hemispherical shell is sleeved, the second hemispherical shell forming a multi-degree-of-freedom sliding motion by tightly adhering to the inner wall of the first hemispherical shell through a spherical outer shell; it also includes a bellows, with the bellows built into the overlapping part of the first and second hemispherical shells, the bellows dynamically sealing and compensating for the rotation of the second hemispherical shell through expansion and contraction, and sliding sleeves welded to both ends of the bellows, with lip-shaped sealing rings tightly fitted to the outer periphery of the circular interface of the bellows, the lip-shaped sealing rings assisting the bellows in sealing; this utility model adds a bellows and sliding sleeves for dynamic sealing, compensating for the wear of the spherical seal caused by long-term adjustment, the double-layer structure improves the sealing effect, the use of pins and sliding grooves to limit the adjustment angle reduces wear on the sealing layer and lowers the probability of fluid leakage, and the second hemispherical shell is locked by a locking nut to improve stability.

Description

Technical Field

[0001] This utility model relates to the field of drainage pipe technology, and in particular to a water supply and drainage pipe connection structure with adjustable angle. Background Technology

[0002] Drainage pipes are responsible for transporting fluids such as rainwater, sewage, and farmland drainage. Due to the long transport routes, connection structures are needed to connect the various parts of the drainage pipes. Traditional connection structures include flange connections, clamp connections, socket connections, welding connections, etc.

[0003] In water supply and drainage systems, the angle adjustment capability of pipe connection structures directly affects the reliability of construction and the adaptability of the system. Existing drainage pipe connection structures use a ball-and-socket structure to achieve multi-angle adjustment. By sliding the adapter one onto the surface of the adapter two, a spherical fit is formed. This structure meets the connection requirements of complex spatial angles. However, the spherical seal is prone to stress concentration at extreme angles, which will accelerate the wear of the seal and lead to a decrease in sealing performance, which can easily cause fluid leakage.

[0004] Therefore, in view of the complex sealing structure of existing drainage pipe connection structure and the decline in sealing performance due to long-term use, an angle-adjustable water supply and drainage pipe connection structure can be designed. Through a double-layer structure, a corrugated pipe is added inside the ball socket for dynamic compensation to form a sealing layer, improve sealing performance, reduce the probability of fluid leakage, and enhance the practical value of the connection structure. Utility Model Content

[0005] To overcome the problem that most ball-and-socket drain pipe connection structures suffer from decreased spherical sealing performance after long-term use, which can easily lead to fluid leakage.

[0006] The technical solution of this utility model is as follows: an angle-adjustable water supply and drainage pipe connection structure, including a first hemispherical shell and a second hemispherical shell, with the second hemispherical shell sleeved inside the first hemispherical shell, and the second hemispherical shell forming a multi-degree-of-freedom sliding by tightly adhering to the inner wall of the first hemispherical shell through a spherical outer shell; it also includes a bellows, a sliding sleeve, and a lip sealing ring, with a bellows built into the overlapping part of the first hemispherical shell and the second hemispherical shell, and the bellows dynamically sealing and compensating for the rotation of the second hemispherical shell through expansion and contraction, with sliding sleeves welded to both ends of the bellows, and a lip sealing ring tightly fitting the outer periphery of the circular interface of the sliding sleeve and the bellows, the lip sealing ring assisting the bellows in sealing.

[0007] Preferably, the second hemispherical shell rotates inside the first hemispherical shell, causing the bellows to expand and contract, which in turn drives the axially movable sliding sleeve to achieve dynamic sealing. A lip-shaped sealing ring is set to seal the weld joint, adding a secondary seal, effectively avoiding fluid leakage caused by the decline in the spherical sealing performance, and enhancing the sealing effect.

[0008] Preferably, a first connecting pipe is fixedly connected to the end of the first hemispherical shell away from the rotating shell, and a second connecting pipe is fixedly connected to the end of the second hemispherical shell away from the first hemispherical shell. Sliding sleeves are slidably connected inside the first and second connecting pipes along the axis, and the sliding sleeves are connected to the drain pipe flange through the first and second connecting pipes.

[0009] Preferably, a sealing hemispherical shell is snapped onto the outside of the second hemispherical shell near the first hemispherical shell, and the sealing hemispherical shell is connected to the flange of the first hemispherical shell.

[0010] Preferably, a pin is fixedly connected to the outside of the second hemispherical shell, a disc spring is sleeved on the outside of the pin, the disc spring is slidably connected to the pin, and a locking nut is threaded on the upper part of the pin.

[0011] Preferably, the outer surface of the sealed hemispherical shell is provided with a sliding groove, in which the pin slides, and the sealed hemispherical shell limits the second hemispherical shell through the sliding groove.

[0012] Preferably, the sealing hemispherical shell and the first hemispherical shell have an adaptive sealing layer in close contact, and the adaptive sealing layer always maintains a tight fit with the connection surface according to different angles.

[0013] The beneficial effects of this utility model are:

[0014] Compared to traditional drain pipe connection structures, the rotating ball socket structure adds a bellows and sliding sleeve for dynamic sealing when adjusting the angle. This compensates for the wear on the spherical seal caused by long-term adjustment. The double-layer structure improves the sealing effect. The pin and sliding groove limit the adjustment angle, effectively reducing wear on the sealing layer and lowering the probability of fluid leakage. The second hemisphere shell is locked by a locking nut and disc spring, improving stability. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of an angle-adjustable water supply and drainage pipe connection structure according to this utility model.

[0016] Figure 2 The diagram shown is a cross-sectional view of an angle-adjustable water supply and drainage pipe connection structure according to this utility model.

[0017] Figure 3 The diagram shown is a three-dimensional structural schematic of a corrugated pipe with an adjustable angle for water supply and drainage pipe connection according to this utility model.

[0018] Figure 4 The diagram shown is a three-dimensional structural schematic of the pin shaft of an adjustable-angle water supply and drainage pipe connection structure according to this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. First hemispherical shell; 2. Sealing hemispherical shell; 201. Slide groove; 3. Second hemispherical shell; 301. Pin; 302. Locking nut; 303. Disc spring; 4. Second connecting pipe; 5. First connecting pipe; 6. Adaptive sealing layer; 7. Bellows; 701. Sliding sleeve; 702. Lip sealing ring. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1 and Figure 3 This utility model provides an embodiment of an angle-adjustable water supply and drainage pipe connection structure, including a first hemispherical shell 1 and a second hemispherical shell 3. The second hemispherical shell 3 is sleeved inside the first hemispherical shell 1, and the second hemispherical shell 3 forms a multi-degree-of-freedom sliding by tightly adhering to the inner wall of the first hemispherical shell 1 through a spherical outer shell. It also includes a bellows 7, a sliding sleeve 701, and a lip sealing ring 702. The bellows 7 is built into the overlapping part of the first hemispherical shell 1 and the second hemispherical shell 3. The bellows 7 provides dynamic sealing compensation for the rotation of the second hemispherical shell 3 through expansion and contraction. Sliding sleeves 701 are welded to both ends of the bellows 7. The sliding sleeves 701 and the outer periphery of the circular interface of the bellows 7 are tightly fitted with the lip sealing ring 702, and the lip sealing ring 702 assists the bellows 7 in sealing.

[0022] Please see Figure 1 and Figure 2 In this embodiment, a first connecting pipe 5 is fixedly connected to the end of the first hemispherical shell 1 away from the rotating shell, and a second connecting pipe 4 is fixedly connected to the end of the second hemispherical shell 3 away from the first hemispherical shell 1. A sliding sleeve 701 is slidably connected inside the first connecting pipe 5 and the second connecting pipe 4 along the axis. The sliding sleeve 701 is connected to the drain pipe flange through the first connecting pipe 5 and the second connecting pipe 4. By adjusting the angle between the first hemispherical shell 1 and the second hemispherical shell 3, the sliding sleeve 701 is driven to slide inside the first connecting pipe 5 and the second connecting pipe 4 to compensate for the expansion and contraction distance of the bellows 7 and complete the dynamic seal. It is connected to the drain pipe through the first connecting pipe 5 and the second connecting pipe 4.

[0023] Please see Figure 1 and Figure 4In this embodiment, a sealing hemispherical shell 2 is snapped onto the outside of the second hemispherical shell 3 near the first hemispherical shell 1. The sealing hemispherical shell 2 is flange-connected to the first hemispherical shell 1. An adaptive sealing layer 6 is in close contact with the contact surface between the sealing hemispherical shell 2 and the first hemispherical shell 1. The adaptive sealing layer 6 maintains a tight fit with the connection surface regardless of the angle. A pin 301 is fixedly connected to the outside of the second hemispherical shell 3. A disc spring 303 is sleeved on the outside of the pin 301 and is slidably connected to the pin 301. A locking nut 302 is threaded onto the upper part of the pin 301. A groove 201 is provided on the outside of the sealing hemispherical shell 2. The pin 301 slides within the groove 201, and the sealing hemispherical shell 2 limits the movement of the second hemispherical shell 3 through the groove 201. In this embodiment, the adaptive sealing layer 6 is made of a high-molecular elastomer material, which has good deformation performance and durability. It can generate different deformation modes according to the adjustment angle of the second hemispherical shell 3 and the first hemispherical shell 1. Within the angle adjustment range of 0° to 30°, it maintains a good sealing effect. When the second hemispherical shell 3 rotates, it will drive the pin 301 to slide in the slide groove 201. The sealing hemispherical shell 2 uses the slide groove 201 to limit the rotation angle of the second hemispherical shell 3, ensuring that the adjustment angle is within a controllable range and preventing the sealing failure caused by excessive adjustment angle. By rotating the locking nut 302 to press down the disc spring 303, the adjustment angle of the second hemispherical shell 3 and the first hemispherical shell 1 can be fixed to prevent loosening and ensure smooth fluid passage.

[0024] When adjusting the drain pipe connection structure, loosen the locking nut 302 to allow the second hemispherical shell 3 to move freely. Push the second hemispherical shell 3 to adjust flexibly within the first hemispherical shell 1, causing the pin 301 to move along the slide groove 201. At the same time, this causes the bellows 7 to extend and retract. The bellows 7 causes the sliding sleeve 701 to move axially in the first connecting pipe 5 and the second connecting pipe 4 for dynamic sealing. The lip sealing ring 702 assists the bellows 7 in sealing. The adaptive sealing layer 6 closely fits the contact surface according to the adjustment angle of the second hemispherical shell 3 and the first hemispherical shell 1. After the angle adjustment is completed, rotate the locking nut 302 to press down the disc spring 303 until the locking nut 302 can no longer be rotated. This stably fixes the second hemispherical shell 3 within the sealed hemispherical shell 2. The drain pipe is then connected to the ends of the first connecting pipe 5 and the second connecting pipe 4.

[0025] Through the above steps, compared with the traditional drain pipe connection structure, the rotating ball socket structure adds a bellows 7 and a sliding sleeve 701 for dynamic sealing when adjusting the angle, which compensates for the wear of the spherical seal caused by long-term adjustment. The double-layer structure improves the sealing effect. The pin 301 and the sliding groove 201 limit the adjustment angle, effectively reducing the wear of the sealing layer and reducing the probability of fluid leakage. The second hemispherical shell 3 is locked by the locking nut 302 and the disc spring 303, which improves stability.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An angle-adjustable water supply and drainage pipe connecting structure, comprising a first hemispherical shell (1) and a second hemispherical shell (3), the inside of the first hemispherical shell (1) is sleeved with the second hemispherical shell (3), and the second hemispherical shell (3) forms multi-degree-of-freedom sliding through a spherical shell close to the inner wall of the first hemispherical shell (1), characterized in that: It also includes a bellows (7), a sliding sleeve (701) and a lip seal ring (702). The bellows (7) is built into the overlapping part of the first hemispherical shell (1) and the second hemispherical shell (3). The bellows (7) provides dynamic sealing compensation for the rotation of the second hemispherical shell (3) through expansion and contraction. Sliding sleeves (701) are welded to both ends of the bellows (7). The sliding sleeves (701) and the outer periphery of the circular interface of the bellows (7) are tightly fitted with a lip seal ring (702). The lip seal ring (702) assists the bellows (7) in sealing. ​ 2. The angularly adjustable drain and water pipe connecting structure according to claim 1, characterized by: The first hemispherical shell (1) is fixedly connected to a first connecting pipe (5) at the end away from the rotating shell, and the second hemispherical shell (3) is fixedly connected to a second connecting pipe (4) at the end away from the first hemispherical shell (1). The first connecting pipe (5) and the second connecting pipe (4) are slidably connected along the axis inside with a sliding sleeve (701). The sliding sleeve (701) is connected to the drain pipe flange through the first connecting pipe (5) and the second connecting pipe (4).

3. The angularly adjustable drain and water pipe connecting structure according to claim 1, characterized in that: The second hemispherical shell (3) is attached to the outside of the first hemispherical shell (1) by a sealing hemispherical shell (2), and the sealing hemispherical shell (2) is connected to the flange of the first hemispherical shell (1).

4. The angularly adjustable plumbing connection of claim 3, wherein: The second hemispherical shell (3) is externally fixedly connected to a pin (301), and a disc spring (303) is sleeved on the outside of the pin (301). The disc spring (303) is slidably connected to the pin (301), and a locking nut (302) is threaded on the upper part of the pin (301).

5. The angularly adjustable plumbing connection of claim 4, wherein: The sealed hemispherical shell (2) has a groove (201) on its outside. The pin (301) slides in the groove (201) and the sealed hemispherical shell (2) limits the second hemispherical shell (3) through the groove (201).

6. The angularly adjustable drain and water pipe connecting structure according to claim 3, characterized by: The sealing hemispherical shell (2) and the first hemispherical shell (1) are in close contact with an adaptive sealing layer (6), which always maintains a tight fit with the connecting surface according to different angles.

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