A bellows joint

Abstract

The utility model relates to bellows connection technical field more specifically, relate to a kind of bellows joint, including connecting pipe, the inner wall of the clamping plate that can be attached with bellows and the compression assembly that can be attached with the outer wall of bellows, the clamping plate and the compression assembly are set on the connecting pipe, the clamping plate and the compression assembly are detachably fixed on the outer wall of the connecting pipe, clamping plate and pressing plate are attached with the inner wall and the outer wall of bellows closely respectively, increase the contact area of bellows joint and bellows, make bellows stress equilibrium, strengthen the stability of installation, prevent bellows joint from colliding with bellows and cause bellows damage in the use process.

Description

Technical Field

[0001] This utility model relates to the field of corrugated pipe connection technology, and more specifically, to a corrugated pipe connector. Background Technology

[0002] Double-wall corrugated pipes, as an important drainage and sewage pipe material, are widely used in municipal, industrial, and civil buildings. However, when connecting a main double-wall corrugated pipe pipeline to a smaller branch pipeline, the traditional method is to directly cut a hole in the main pipeline and then insert a drain pipe into it. Although this connection method is simple, due to the large gap between the drain pipe and the main double-wall corrugated pipe pipeline, the drain pipe may collide with the main pipeline during operation due to vibration or water flow impact, leading to damage to the double-wall corrugated pipe and widening of the gap. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology where there is a large gap between the drainage pipe and the main corrugated pipe pipeline, and to provide a corrugated pipe joint that can effectively reduce the gap between the corrugated pipe joint and the main corrugated pipe pipeline, enhance the stability of installation, and avoid collision with the corrugated pipe to prevent damage to the corrugated pipe.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A bellows fitting is provided, comprising a connecting pipe, a clamping plate capable of fitting against the inner wall of the bellows, and a clamping assembly capable of fitting against the outer wall of the bellows. The clamping plate and the clamping assembly are sleeved on the connecting pipe and are detachably fixed to the outer wall of the connecting pipe.

[0006] This utility model of a corrugated pipe joint involves cutting an installation hole in the main corrugated pipe when installing a branch pipe on the main corrugated pipe. One end of the connecting pipe is inserted into the installation hole, and a clamp is placed inside the pipe. The clamp is then installed on the outer wall of the connecting pipe. The position of the connecting pipe is adjusted so that the clamp fits tightly against the inner wall of the corrugated pipe. A clamping assembly is then installed on the outer wall of the connecting pipe, ensuring a tight fit between the clamping assembly and the outer wall of the corrugated pipe. The corrugated pipe is then pressed between the clamping assembly and the clamp. Finally, the branch pipe is connected to the other end of the connecting pipe, completing the installation. The clamp and clamping assembly fit tightly against the inner and outer walls of the corrugated pipe, respectively, increasing the contact area between the corrugated pipe joint and the corrugated pipe. This ensures balanced stress on the corrugated pipe, enhances installation stability, and prevents damage to the corrugated pipe caused by collisions during use.

[0007] Furthermore, the outer wall of the connecting pipe is provided with a first external thread, and the inner wall of the clamp is provided with a first internal thread that mates with the first external thread. The clamp is threadedly connected to the connecting pipe. Installing the clamp by means of threaded connection is simple to operate, has high installation stability, and allows for flexible adjustment of the relative position of the clamp and the connecting pipe within the coverage area of ​​the first external thread.

[0008] Furthermore, the clamping plate includes a first half-clamping plate and a second half-clamping plate, the first half-clamping plate being detachably connected to the second half-clamping plate, and the connecting pipe being clamped between the first half-clamping plate and the second half-clamping plate. When installing the clamping plate, the first half-clamping plate and the second half-clamping plate are sequentially inserted into the corrugated pipe through the mounting holes to assemble a complete clamping plate, which is then installed on the connecting pipe. By disassembling the clamping plate into a first half-clamping plate and a second half-clamping plate, the clamping plate can be easily inserted into the corrugated pipe through the mounting holes, reducing installation difficulty.

[0009] Furthermore, it also includes a first sealing ring capable of abutting against the connection between the bellows and the connecting pipe. The first sealing ring is fitted onto the outer wall of the connecting pipe and abuts against the outer wall of the connecting pipe. The first sealing ring can eliminate the gap between the connecting pipe and the inner wall of the mounting hole, improving the sealing performance between the connecting pipe and the bellows.

[0010] Furthermore, the clamping assembly includes a clamping nut and a pressure plate that can fit against the outer wall of the bellows. The clamping nut and the pressure plate are sleeved on the connecting pipe. The inner wall of the clamping nut has a second internal thread that mates with the first external thread. The inner wall of the clamping nut is threadedly connected to the outer wall of the connecting pipe. The clamping nut abuts against the side of the pressure plate away from the bellows. When installing the bellows joint, install the clamping plate on the connecting pipe, adjust the position of the connecting pipe so that the clamping plate fits against the inner wall of the bellows, sleeve the pressure plate and clamping nut on the connecting pipe, adjust the position of the pressure plate so that the pressure plate fits against the outer wall of the bellows, and rotate the clamping nut until the clamping nut clamps the pressure plate, completing the installation.

[0011] Furthermore, the end of the connecting pipe used to connect to the branch pipeline is provided with a socket, and a second sealing ring capable of abutting against the branch pipeline is installed in the socket. The socket facilitates the installation of the branch pipeline; during installation, the second sealing ring is installed in the socket, and the branch pipeline is inserted into the socket, so that the second sealing ring abuts against the branch pipeline, thus completing the installation.

[0012] Furthermore, it also includes a cap capable of sealing the socket, the cap being detachably installed on the socket. When the mounting hole is abandoned or when it is not temporarily needed for installing a branch pipeline at that location, the cap is installed on the socket to seal it.

[0013] Furthermore, the top of the cap has a drop hole with a diameter larger than that of the branch pipeline to be connected, and the drop hole coincides with the axis of the socket. When installing the branch pipeline, the drop hole of the cap is knocked off, the cap is installed on the socket, the branch pipeline is passed through the cap and inserted into the socket to complete the installation; when the installation hole is abandoned or the branch pipeline is not needed at this position temporarily, the cap with the drop hole knocked off is removed, and the cap with the drop hole is installed on the socket to seal the socket.

[0014] Furthermore, the top of the second sealing ring abuts against the top of the inner wall of the cap, and the diameter of the drop hole is smaller than the outer diameter of the second sealing ring. When installing the branch pipeline, the drop hole of the cap is knocked out, and the cap is installed on the socket, so that the cap presses against the second sealing ring, causing axial compression of the second sealing ring and radial expansion of the second sealing ring, further eliminating the gap between the socket and the branch pipeline and enhancing the sealing effect.

[0015] Furthermore, the outer wall of the socket is provided with a second external thread, and the inner wall of the cap is provided with a third internal thread that mates with the second external thread. The cap is threadedly connected to the socket. Installing the cap via a threaded connection is simple, provides high installation stability, and allows for flexible adjustment of the relative position of the cap and the connecting pipe within the coverage area of ​​the second external thread.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The bellows joint of this utility model has the following features: 1. The clamping plate and the pressing assembly are tightly fitted to the inner and outer walls of the bellows, respectively, increasing the contact area between the bellows joint and the bellows, ensuring balanced stress on the bellows, enhancing installation stability, and preventing damage to the bellows due to collisions during use; 2. The inner and outer walls of the first sealing ring abut against the connecting pipe and the bellows, respectively, enhancing sealing performance and reducing the risk of leakage; 3. The clamping plate is assembled from a first half clamping plate and a second half clamping plate. The first half clamping plate and the second half clamping plate can be inserted into the bellows through the mounting holes one after the other, and assembled into a complete clamping plate inside the bellows, making installation simple and convenient; 4. When installing the branch pipeline, knock off the screw hole of the cap, tighten the cap, and press the second sealing ring to complete the installation. No glue is required. When the mounting hole is abandoned or the branch pipeline is not needed at this location, remove the cap with the knocked-off hole and replace it with a cap with a knocked-off hole, making the operation simple and convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first structure of the bellows joint of this utility model;

[0019] Figure 2 This is a schematic diagram of the second structure of the bellows joint of this utility model;

[0020] Figure 3 This is an exploded view of the corrugated pipe joint of this utility model;

[0021] Figure 4 This is an exploded view of the clamping plate of the corrugated pipe joint of this utility model;

[0022] Figure 5 This is a schematic diagram of the assembly of the corrugated pipe joint and the corrugated pipe of this utility model.

[0023] In the attached diagram: 1. Connecting pipe; 11. Socket; 2. Clamping plate; 21. First half clamping plate; 22. Second half clamping plate; 23. Sealing groove; 3. Pressing assembly; 31. Pressing nut; 32. Pressure plate; 4. Sealing cap; 41. Drop hole; 5. First sealing ring; 51. First sealing part; 52. Second sealing part; 6. Second sealing ring; 7. Corrugated pipe. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] Example 1

[0027] like Figures 1 to 5 The first embodiment of the bellows joint of this utility model is shown. A bellows joint is provided, including a connecting pipe 1, a clamping plate 2 capable of fitting against the inner wall of the bellows 7, and a clamping assembly 3 capable of fitting against the outer wall of the bellows 7. Figure 1 As shown, the clamping plate 2 and the clamping assembly 3 are sleeved on the connecting pipe 1, and the clamping plate 2 and the clamping assembly 3 are detachably fixed to the outer wall of the connecting pipe 1.

[0028] When installing branch pipelines on the main corrugated pipe 7, the bellows joint of this utility model is as follows: Figure 5 As shown, an installation hole is cut in the main pipe of the corrugated pipe 7. One end of the connecting pipe 1 is inserted into the installation hole. The clamp 2 is placed inside the pipe and installed on the outer wall of the connecting pipe 1. The position of the connecting pipe 1 is adjusted so that the clamp 2 is tightly fitted with the inner wall of the corrugated pipe 7. The clamping assembly 3 is installed on the outer wall of the connecting pipe 1 so that the clamping assembly 3 is tightly fitted with the outer wall of the corrugated pipe 7. The corrugated pipe 7 is pressed between the clamping assembly 3 and the clamp 2. The branch pipe is connected to the other end of the connecting pipe 1 to complete the installation. The clamp 2 and the clamping assembly 3 are tightly fitted with the inner and outer walls of the corrugated pipe 7, respectively, which increases the contact area between the corrugated pipe joint and the corrugated pipe 7, makes the corrugated pipe 7 under balanced force, enhances the stability of the installation, and prevents the corrugated pipe joint from colliding with the corrugated pipe 7 during use and causing damage to the corrugated pipe 7.

[0029] like Figure 2 and Figure 3 As shown, the outer wall of the connecting pipe 1 is provided with a first external thread, and the inner wall of the clamping plate 2 is provided with a first internal thread that mates with the first external thread. The clamping plate 2 is threadedly connected to the connecting pipe 1. Installing the clamping plate 2 by means of threaded connection is simple to operate, has high installation stability, and allows for flexible adjustment of the relative position of the clamping plate 2 and the connecting pipe 1 within the coverage area of ​​the first external thread.

[0030] like Figure 4 As shown, the clamping plate 2 includes a first half-clamping plate 21 and a second half-clamping plate 22. The first half-clamping plate 21 is detachably connected to the second half-clamping plate 22, and the connecting pipe 1 is clamped between the first half-clamping plate 21 and the second half-clamping plate 22. When installing the clamping plate 2, the first half-clamping plate 21 and the second half-clamping plate 22 are inserted into the corrugated pipe 7 through the mounting holes one after the other to assemble the complete clamping plate 2, and then the clamping plate 2 is installed on the connecting pipe 1. By disassembling the clamping plate 2 into the first half-clamping plate 21 and the second half-clamping plate 22, the clamping plate 2 can be easily inserted into the corrugated pipe 7 through the mounting holes, reducing the installation difficulty. In this embodiment, the first half-clamping plate 21 and the second half-clamping plate 22 are connected by screws.

[0031] like Figure 2 and Figure 3As shown, it also includes a first sealing ring 5 that abuts against the connection between the bellows 7 and the connecting pipe 1. The first sealing ring 5 is sleeved on the outer wall of the connecting pipe 1 and abuts against the outer wall of the connecting pipe 1. The first sealing ring 5 can eliminate the gap between the connecting pipe 1 and the inner wall of the mounting hole, improving the sealing performance between the connecting pipe 1 and the bellows 7. In this embodiment, the first sealing ring 5 is a silicone ring; the clamping plate 2 is provided with a sealing groove 23. The first sealing ring 5 includes a first sealing part 51 and a second sealing part 52. The second sealing part 52 is connected to the bottom of the first sealing part 51. The inner wall and outer wall of the first sealing part 51 abut against the connecting pipe 1 and the inner wall of the mounting hole, respectively. The second sealing part 52 is snapped into the sealing groove 23. The upper wall and lower wall of the second sealing part 52 abut against the inner wall of the bellows 7 and the clamping plate 2, respectively.

[0032] The working principle of the corrugated pipe joint in this embodiment is as follows: When installing branch pipes on the main corrugated pipe 7, such as Figure 5 As shown, installation holes are cut into the main pipe of the corrugated pipe 7. The first half-clamp plate 21 and the second half-clamp plate 22 are inserted into the corrugated pipe 7 through the installation holes one after the other. The first half-clamp plate 21 and the second half-clamp plate 22 are assembled into the complete clamp plate 2 inside the corrugated pipe 7 by screws. The second sealing part 52 of the first sealing ring 5 is inserted into the sealing groove 23. One end of the connecting pipe 1 is inserted into the installation hole. The clamp plate 2 is installed on the connecting pipe 1 by threaded connection. The position of the connecting pipe 1 is adjusted so that the clamp plate 2 fits tightly against the inner wall of the corrugated pipe 7. At this time, both the connecting pipe 1 and the corrugated pipe 7 abut against the second sealing part 52 of the first sealing ring 5. The clamping assembly 3 is installed on the outer wall of the connecting pipe 1 so that the clamping assembly 3 fits tightly against the outer wall of the corrugated pipe 7. The corrugated pipe 7 is pressed between the clamping assembly 3 and the clamp plate 2. The branch pipeline is connected to the other end of the connecting pipe 1 to complete the installation.

[0033] Example 2

[0034] This embodiment is the second embodiment of the corrugated pipe joint of this utility model. This embodiment is similar to the first embodiment, except that, as follows: Figure 1 and Figure 2 As shown, the clamping assembly 3 includes a clamping nut 31 and a pressure plate 32 that can fit against the outer wall of the bellows 7. The clamping nut 31 and the pressure plate 32 are sleeved on the connecting pipe 1. The inner wall of the clamping nut 31 is provided with a second internal thread that mates with the first external thread. The inner wall of the clamping nut 31 is threadedly connected to the outer wall of the connecting pipe 1. The clamping nut 31 abuts against the side of the pressure plate 32 away from the bellows 7.

[0035] The working principle of the corrugated pipe joint in this embodiment is as follows: When installing the corrugated pipe joint, the first half-clamp plate 21 and the second half-clamp plate 22 are assembled into a complete clamp plate 2 inside the corrugated pipe 7. The clamp plate 2 is installed on the connecting pipe 1 through a threaded connection. The position of the connecting pipe 1 is adjusted so that the clamp plate 2 fits against the inner wall of the corrugated pipe 7. The pressure plate 32 and the clamping nut 31 are sleeved on the connecting pipe 1. The position of the pressure plate 32 is adjusted so that the pressure plate 32 fits against the outer wall of the corrugated pipe 7. The clamping nut 31 is rotated until the clamping nut 31 presses the pressure plate 32 tightly. At this time, the corrugated pipe 7 is pressed between the pressure plate 32 and the clamp plate 2, and the installation is completed.

[0036] Example 3

[0037] This embodiment is the third embodiment of the corrugated pipe joint of this utility model. This embodiment is similar to the previous one, except that, as Figures 1 to 3 As shown, the end of the connecting pipe 1 used for connecting to the branch pipeline is provided with a socket 11, and a second sealing ring 6 that can abut against the branch pipeline is installed in the socket 11. The socket 11 facilitates the installation of the branch pipeline; during installation, the second sealing ring 6 is installed in the socket 11, the branch pipeline is inserted into the socket 11, and the second sealing ring 6 abuts against the branch pipeline to complete the installation.

[0038] like Figure 2 As shown, it also includes a cap 4 that can seal the socket 11, and the cap 4 is detachably installed on the socket 11. When the mounting hole is abandoned or when it is not temporarily necessary to install a branch pipeline at this location, the cap 4 is installed on the socket 11 to seal the socket 11.

[0039] like Figure 2 As shown, the top of the cap 4 has a drop hole 41 with a diameter larger than that of the branch pipe to be connected, and the drop hole 41 coincides with the axis of the socket 11. When installing the branch pipe, knock off the drop hole 41 of the cap 4, install the cap 4 on the socket 11, pass the branch pipe through the cap 4, and insert it into the socket 11 to complete the installation; when the installation hole is abandoned or the branch pipe is not needed to be installed at this position temporarily, remove the cap 4 with the drop hole 41 knocked off, install the cap 4 with the drop hole 41 on the socket 11, and seal the socket 11.

[0040] The top of the second sealing ring 6 abuts against the top of the inner wall of the cap 4, and the diameter of the drop hole 41 is smaller than the outer diameter of the second sealing ring 6. When installing the branch pipeline, knock off the drop hole 41 of the cap 4, install the cap 4 on the socket 11, and press the cap 4 against the second sealing ring 6, causing axial compression of the second sealing ring 6 and radial expansion of the second sealing ring 6, further eliminating the gap between the socket 11 and the branch pipeline and enhancing the sealing effect.

[0041] The outer wall of the socket 11 is provided with a second external thread, and the inner wall of the cap 4 is provided with a third internal thread that mates with the second external thread. The cap 4 is threadedly connected to the socket 11. Installing the cap 4 by means of threaded connection is simple to operate, has high installation stability, and allows for flexible adjustment of the relative position of the cap 4 and the connecting pipe 1 within the coverage area of ​​the second external thread.

[0042] The working principle of the corrugated pipe joint in this embodiment is as follows: When installing branch pipes on the main corrugated pipe 7, such as Figure 5 As shown, installation holes are cut in the main pipeline of the bellows 7. The first half-clamp plate 21 and the second half-clamp plate 22 are inserted into the bellows 7 through the installation holes one after the other. The first half-clamp plate 21 and the second half-clamp plate 22 are assembled into the complete clamp plate 2 inside the bellows 7 by screws. The second sealing part 52 of the first sealing ring 5 is inserted into the sealing groove 23. One end of the connecting pipe 1 is inserted into the installation hole. The clamp plate 2 is installed on the connecting pipe 1 by threaded connection. The position of the connecting pipe 1 is adjusted so that the clamp plate 2 fits tightly against the inner wall of the bellows 7. At this time, both the connecting pipe 1 and the bellows 7 abut against the second sealing part 52 of the first sealing ring 5. The pressure plate 32 and the clamping nut 31 are sleeved on the connecting pipe 1. The position of the pressure plate 32 is adjusted so that the clamp plate 2 fits tightly against the inner wall of the bellows 7. Plate 32 is fitted against the outer wall of corrugated pipe 7. Rotate and tighten nut 31 until nut 31 presses plate 32 tightly. Install second sealing ring 6 in socket 11 of connecting pipe 1. Knock out hole 41 of cap 4. Put cap 4 on socket 11. Pass branch pipeline through cap 4 and insert into socket 11. Rotate cap 4 along second external thread to tighten cap 4. Cap 4 compresses second sealing ring 6, causing second sealing ring 6 to expand. Second sealing ring 6 presses branch pipeline and connecting pipe 1 to complete installation. When the installation hole is abandoned or branch pipeline is not needed at this position, remove cap 4 with hole 41 knocked out. Install cap 4 with hole 41 on socket 11 to seal socket 11.

[0043] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A bellows joint, characterized in that, It includes a connecting pipe (1), a clamp (2) that can fit against the inner wall of the corrugated pipe (7), and a clamping assembly (3) that can fit against the outer wall of the corrugated pipe (7). The clamp (2) and the clamping assembly (3) are sleeved on the connecting pipe (1), and the clamp (2) and the clamping assembly (3) are detachably fixed to the outer wall of the connecting pipe (1).

2. The corrugated pipe joint according to claim 1, characterized in that, The outer wall of the connecting pipe (1) is provided with a first external thread, and the inner wall of the clamp (2) is provided with a first internal thread that mates with the first external thread. The clamp (2) is threadedly connected to the connecting pipe (1).

3. The corrugated pipe joint according to claim 1, characterized in that, The clamp (2) includes a first half clamp (21) and a second half clamp (22), the first half clamp (21) being detachably connected to the second half clamp (22), and the connecting tube (1) being clamped between the first half clamp (21) and the second half clamp (22).

4. The corrugated pipe joint according to claim 2, characterized in that, It also includes a first sealing ring (5) that can abut against the connection between the bellows (7) and the connecting pipe (1), the first sealing ring (5) being fitted on the outer wall of the connecting pipe (1) and abutting against the outer wall of the connecting pipe (1).

5. The corrugated pipe joint according to claim 2, characterized in that, The clamping assembly (3) includes a clamping nut (31) and a pressure plate (32) that can fit against the outer wall of the bellows (7). The clamping nut (31) and the pressure plate (32) are sleeved on the connecting pipe (1). The inner wall of the clamping nut (31) is provided with a second internal thread that mates with the first external thread. The inner wall of the clamping nut (31) is threadedly connected to the outer wall of the connecting pipe (1). The clamping nut (31) abuts against the side of the pressure plate (32) away from the bellows (7).

6. The bellows joint according to any one of claims 1 to 5, characterized in that, The connecting pipe (1) is provided with a socket (11) at one end for connecting to the branch pipeline, and a second sealing ring (6) that can abut against the branch pipeline is installed in the socket (11).

7. The bellows joint according to claim 6, characterized in that, It also includes a cap (4) capable of sealing the socket (11), the cap (4) being detachably mounted on the socket (11).

8. The corrugated pipe joint according to claim 7, characterized in that, The top of the cap (4) is provided with a drop hole (41) with a diameter larger than that of the branch pipeline to be connected, and the drop hole (41) coincides with the axis of the socket (11).

9. The corrugated pipe joint according to claim 8, characterized in that, The top of the second sealing ring (6) abuts against the top of the inner wall of the cap (4), and the diameter of the drop hole (41) is smaller than the outer diameter of the second sealing ring (6).

10. The bellows joint according to any one of claims 7 to 9, characterized in that, The outer wall of the socket (11) is provided with a second external thread, and the inner wall of the cap (4) is provided with a third internal thread that mates with the second external thread. The cap (4) is threadedly connected to the socket (11).

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