Water supply and drainage pipe connecting device

Abstract

The utility model relates to a water supply and drainage pipe connecting device which comprises a connecting pipe and a first sealing ring arranged in the middle of the inner side of the connecting pipe, the water supply and drainage pipe connecting device further comprises fastening mechanisms arranged on the two sides of the connecting pipe respectively, and each set of fastening mechanism comprises one or more sets of fastening assemblies and fastening driving rings. The fastening assembly comprises a second sealing ring and a fastening piece which are sequentially arranged on the inner side of the connecting pipe from inside to outside, the fastening piece comprises a fastening piece body and a plurality of rod-shaped parts which are arranged on the fastening piece body and sequentially arranged in the circumferential direction of the fastening piece body, and the free ends of the rod-shaped parts stretch out of the connecting pipe; the fastening driving ring is movably arranged on the outer side of the connecting pipe and can drive the rod-shaped part to drive the fastening piece body and the second sealing ring to move in the direction close to the axis of the connecting pipe. The water supply and drainage pipe connecting device is convenient to use and good in universality and connecting stability.

Description

Technical Field

[0001] This utility model relates to the field of water supply and drainage technology, specifically to a water supply and drainage pipe connection device. Background Technology

[0002] In building and infrastructure construction, water supply and drainage systems are crucial, and the quality and efficiency of water supply and drainage pipe connections directly affect the operation of the system and the progress of construction.

[0003] Currently, most water supply and drainage pipes use flange connections. While this method can meet certain strength and sealing requirements, it presents significant practical problems. On the one hand, the connection requires a large number of auxiliary tools, such as wrenches for tightening bolts and special tools for installing gaskets. This not only increases construction costs but also makes the operation complicated. Construction workers need to carry multiple tools, and the lack or damage of tools will delay the progress. On the other hand, the connection involves many steps. First, the two flanges must be accurately fixed to the pipe ends, then a gasket must be placed between them, and finally, bolts must be tightened in a specific order and torque. If any step goes wrong, it may result in an insecure connection, poor sealing, and leakage.

[0004] As a result, the connection efficiency of water supply and drainage pipes is extremely low. In large-scale projects, the connection of numerous pipes takes a long time, which greatly extends the construction period and increases labor and time costs. Moreover, the cumbersome connection method also seriously affects the work efficiency when replacing or repairing pipes, leading to water outages or poor drainage, which brings many inconveniences to life and production. Therefore, it is necessary to provide a new type of water supply and drainage pipe connection device to solve the above technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a convenient water supply and drainage pipe connection device.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a water supply and drainage pipe connection device, including a connecting pipe and a first sealing ring disposed in the middle of the inner side of the connecting pipe. The water supply and drainage pipe connection device also includes fastening mechanisms disposed on both sides of the connecting pipe. Each fastening mechanism includes one or more fastening components and a fastening drive ring. The fastening components include a second sealing ring and a fastener disposed sequentially from the inside to the outside of the connecting pipe. The fastener includes a fastener body and a plurality of rod-shaped portions disposed on the fastener body and arranged sequentially along its circumference. The rod-shaped portions extend radially along the connecting pipe and their free ends protrude from the connecting pipe. The fastening drive ring is movably disposed on the outside of the connecting pipe and can drive the rod-shaped portions, along with the fastener body and the second sealing ring, to move toward the axis of the connecting pipe.

[0008] This utility model discloses a convenient water supply and drainage pipe connection device. Simply insert two pipes into the connecting pipe from both ends, then drive the fastening drive ring. The rod-shaped part will then move the fastener body towards the axis of the connecting pipe. During this process, the fastener body gradually contracts inward, applying inward pressure to the second sealing ring and the pipe inside, thus achieving a stable fixation of the pipe. Compared with traditional flange connections, this device significantly reduces reliance on various auxiliary tools, greatly improving ease of use. Furthermore, the inner diameter of the fastener is adjustable, allowing for flexible adaptation to pipes of different sizes, resulting in better versatility. The second sealing ring enhances the fixing effect on the pipe, evenly distributing pressure, improving the stability and firmness of the connection, further ensuring connection quality, and reducing the risk of pipe loosening or detachment.

[0009] In some embodiments, the fastener body includes an arc-shaped portion, a connecting portion, and an elastic portion. The arc-shaped portion has a plurality of arc-shaped portions spaced apart around the outer periphery of the second sealing ring. One or more connecting portions are provided between each pair of adjacent arc-shaped portions. One end of the connecting portion is fixedly connected to one of the two adjacent arc-shaped portions, and the other end is inserted into the other and the two are movably connected. One or more elastic portions abut between each pair of adjacent arc-shaped portions.

[0010] Furthermore, the elastic part and the connecting part are provided in a one-to-one correspondence and the elastic part is sleeved on the outside of the corresponding connecting part.

[0011] Furthermore, the elastic part is a spring.

[0012] In some embodiments, the fastening body is annular.

[0013] In some embodiments, a spherical body is fixedly connected to the free end of the rod-shaped portion.

[0014] In some embodiments, the fastening mechanism has multiple sets of fastening components arranged sequentially along the axial direction of the connecting pipe, with the multiple sets of fastening components sharing a single fastening drive ring.

[0015] Furthermore, each fastening mechanism has two sets of the aforementioned fastening components.

[0016] In some embodiments, the inner side of the fastening drive ring has a guide slope that cooperates with the rod-shaped portion. When the fastening drive ring moves along the axial direction of the connecting pipe, the guide slope can drive the rod-shaped portion to slide radially along the connecting pipe.

[0017] In some embodiments, the fastening drive ring includes a drive portion and a guide portion, the drive portion being threadedly connected to the outside of the connecting pipe, and the guide portion having the guide slope on its inner side.

[0018] In some embodiments, the outer side of the drive unit is provided with multiple anti-slip teeth.

[0019] In some embodiments, the fastening mechanisms on both sides of the connecting pipe are symmetrically arranged.

[0020] In some embodiments, the water supply and drainage pipe connection device further includes limiting rings disposed at both ends of the connection pipe, the limiting ring having a limiting groove on the side near the fastening drive ring, and the fastening drive ring being partially inserted into the limiting groove.

[0021] In some embodiments, the water supply and drainage pipe connection device further includes a screw that securely connects the fastening drive ring to the connecting pipe.

[0022] In some embodiments, the two ends of the first sealing ring are variable diameter sections whose inner diameter gradually increases from the inside to the outside.

[0023] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0024] This utility model's water supply and drainage pipe connection device, through the arrangement of fasteners, a second sealing ring, and a fastening drive ring, allows for easy installation by inserting two pipes into the connecting pipe from both ends. Then, driving the fastening drive ring causes the fasteners to gradually contract inward, applying inward pressure to the second sealing ring and the pipe inside, thus achieving a stable fixation of the pipes. The inner diameter of the fasteners is adjustable, allowing for flexible adaptation to pipes of different sizes, thus improving its versatility. The second sealing ring enhances the fixing effect on the pipes, evenly distributing pressure, improving the stability and firmness of the connection, further ensuring connection quality, and reducing the risk of pipe loosening or detachment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the water supply and drainage pipe connection device provided in Example 1;

[0026] Figure 2 A cross-sectional view of the water supply and drainage connection device provided in Embodiment 1;

[0027] Figure 3 This is a schematic diagram of the fastening assembly provided in Example 1;

[0028] Figure 4 The structural schematic diagram of the fastening drive ring is not shown for the water supply and drainage pipe connection device provided in Example 1;

[0029] Figure 5 This is a schematic diagram of the fastening drive ring provided in Example 1;

[0030] Among them, 1 is the connecting pipe; 11 is the stop protrusion;

[0031] 2. First sealing ring; 21. Variable diameter section;

[0032] 3. Fastening assembly; 31. Fastener body; 311. Arc-shaped part; 312. Connecting part; 313. Elastic part; 32. Rod-shaped part; 321. Spherical body; 33. Second sealing ring;

[0033] 4. Fastening drive ring; 41. Drive unit; 411. Anti-slip teeth; 42. Guide unit; 421. Guide slope;

[0034] 5. Limiting ring; 51. Limiting groove;

[0035] 6. Screw. Detailed Implementation

[0036] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0037] In the description of the embodiments of this utility model, it should be understood that the axial direction refers to the direction of the line connecting the centers of the two ends of the device or component; inner and outer are positions defined by distance relative to the center of the device or component, where inner is the position closer to the center of the device or component, and outer is the position farther away from the center of the device or component; up and down refer to the orientation of the device in its actual use or working state. The above orientations or positional relationships are only for the convenience of describing the embodiments of this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this utility model.

[0038] In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0039] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] To simplify the disclosure of embodiments of the present invention, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the present invention. Furthermore, reference numerals and / or letters may be repeated in different examples of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0041] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0042] Example 1

[0043] A water supply and drainage pipe connection device, such as Figures 1 to 5 As shown, it includes a connecting pipe 1, a first sealing ring 2 located at the middle of the inner side of the connecting pipe 1, and fastening mechanisms disposed on the left and right sides of the connecting pipe 1. Preferably, the fastening mechanisms on the left and right sides of the connecting pipe 1 are symmetrically arranged. The following describes the fastening mechanism on one side in detail.

[0044] The fastening mechanism includes fastening components 3 and fastening drive ring 4. The fastening components 3 have one set or multiple sets arranged sequentially at intervals along the axial direction of the connecting pipe 1. When there are multiple sets of fastening components 3, multiple sets of fastening components 3 share one fastening drive ring 4. In this embodiment, there are two sets of fastening components 3. The arrangement of two sets of fastening components 3 can enhance the fixing effect on the pipe, evenly distribute the pressure, and ensure the connection quality.

[0045] Specifically, taking one set as an example, the fastening assembly 3 includes a second sealing ring 33 and a fastener arranged sequentially from the inside to the outside of the connecting pipe 1. The fastener includes a fastener body 31 and a plurality of rod-shaped portions 32 arranged sequentially along its circumference on the fastener body 31. The rod-shaped portions 32 extend radially along the connecting pipe 1, with their free ends inserted into and protruding from the connecting pipe 1. A fastening drive ring 4 is movably disposed on the outside of the connecting pipe 1. It can drive the rod-shaped portions 32, along with the fastener body 31 and the second sealing ring 33, to move towards the axis of the connecting pipe 1, thereby causing the fastener body 31 to contract radially and exert an inward squeezing force on the second sealing ring 33 to firmly fix the pipe inside. The second sealing ring 33 enhances the fixing effect on the pipe, evenly distributes pressure, improves the stability and firmness of the connection, further ensures the connection quality, and reduces the risk of pipe loosening or falling off. Preferably, the second sealing ring 33 is a rubber ring.

[0046] The fastener body 31 is annular and its inner diameter is adjustable. Specifically, the fastener body 31 includes an arcuate portion 311, a connecting portion 312, and an elastic portion 313. The arcuate portion 311 has multiple portions arranged at intervals around the outer periphery of the second sealing ring 33. One or more connecting portions 312 are provided between each pair of adjacent arcuate portions 311. One end of the connecting portion 312 is fixedly connected to one of the two adjacent arcuate portions 311, and the other end is inserted into the other, with the two movably connected. One or more elastic portions 313 abut against each pair of adjacent arcuate portions 311. In this embodiment, a connecting portion 312 is provided between each pair of adjacent arcuate portions 311, and the elastic portion 313 is correspondingly provided with each connecting portion 312 and is sleeved on the outside of its corresponding connecting portion 312. The elastic portion 313 is preferably a spring, which causes the two adjacent arcuate portions 311 to tend to move away from each other, so that the arcuate portion 311 can return to its original position without external force. Each arc-shaped portion 311 is provided with one or more rod-shaped portions 32. When each arc-shaped portion 311 has one rod-shaped portion 32, the rod-shaped portion 32 is fixedly connected to the middle position of the arc-shaped portion 311; when each arc-shaped portion 311 has multiple rod-shaped portions 32, the rod-shaped portions 32 are fixedly connected to the arc-shaped portion 311 and are evenly distributed. Preferably, the rod-shaped portions 32 are integrally formed with the arc-shaped portion 311.

[0047] The fastening drive ring 4 includes a drive portion 41 and a guide portion 42. The drive portion 41 is located on the outside of the connecting pipe 1 and is threadedly connected to it. To facilitate rotation of the drive portion 41, multiple anti-slip teeth 411 are provided on its outer side. The guide portion 42 is fixedly connected to the drive portion 41, preferably integrally formed with it. The inner side of the guide portion 42 has a guide slope 421 that cooperates with the rod-shaped portion 32. When the drive portion 41 is rotated, it carries the guide portion 42 along the axial direction of the connecting pipe 1. The guide slope 421 on the guide portion 42 can drive the rod-shaped portion 32 to slide radially along the connecting pipe 1, thereby achieving radial expansion or contraction of the fastener body 31. To better drive the rod-shaped portion 32, a spherical body 321 is fixedly connected to the free end of the rod-shaped portion 32. The spherical body 321 can increase the contact area between the rod-shaped part 32 and the guide slope 421, making the force more uniform and preventing the rod-shaped part 32 from getting stuck or damaged during movement. At the same time, it can also reduce the wear of the guide slope 421 and extend the service life of the device.

[0048] To limit the movement of the fastening drive ring 4, a stop protrusion 11 is provided at the middle position of the outer side of the connecting pipe 1. The water supply and drainage pipe connection device also includes limiting rings 5 ​​respectively provided at both ends of the connecting pipe 1. The limiting ring 5 has a limiting groove 51 on the side near the fastening drive ring 4, and part of the fastening drive ring 4 is inserted into the limiting groove 51.

[0049] To further improve the stability of the device, the water supply and drainage pipe connection device also includes a screw 6 that fixes the fastening drive ring 4 to the connecting pipe 1. When the fastening drive ring 4 moves to the appropriate position, it can be fixed to the connecting pipe 1 by the screw 6, preventing the rotating ring from rotating accidentally and causing the fixing components to loosen, thus ensuring the stability and reliability of the device during use.

[0050] The first sealing ring 2 is preferably a rubber ring, with its two ends being variable diameter sections 21 whose inner diameter gradually increases from the inside to the outside, facilitating pipe insertion.

[0051] Working principle:

[0052] When connecting water supply and drainage pipes (hereinafter referred to as pipes), align the two pipes with the two ends of the connecting pipe 1 and insert them into the connecting pipe 1. Then, rotate the two fastening drive rings 4 on the connecting pipe 1, causing the fastening drive rings 4 to move threadedly on the connecting pipe 1. The guide slope 421 of the fastening drive rings 4 drives the rod-shaped part 32, along with the arc-shaped part 311, to move towards the axis. At the same time, the free end of the connecting part 312 gradually overcomes the resistance of the elastic part 313 and inserts into the adjacent arc-shaped part 311. The inner diameter of the arc-shaped part 311 decreases, thereby squeezing the second sealing ring 33 on its inner side. After the second sealing ring 33 deforms, it tightly fits against the outer wall of the pipe on its inner side, thus fixing the pipe. The entire process does not require the use of wrenches or other large auxiliary tools, making the operation simple and improving the connection efficiency of water supply and drainage pipes.

[0053] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A plumbing connecting device, comprising a connecting pipe (1) and a first sealing ring (2) arranged in the middle position inside the connecting pipe (1), characterized in that: The water supply and drainage pipe connection device also includes fastening mechanisms disposed on both sides of the connection pipe (1). Each fastening mechanism includes one or more fastening components (3) and a fastening drive ring (4). The fastening assembly (3) includes a second sealing ring (33) and a fastener arranged sequentially from the inside to the outside of the connecting pipe (1). The fastener includes a fastener body (31) and a plurality of rod-shaped portions (32) arranged sequentially on the fastener body (31) along its circumference. The rod-shaped portions (32) extend radially and their free ends protrude from the connecting pipe (1). The fastening drive ring (4) is movably disposed on the outside of the connecting pipe (1), and it can drive the rod-shaped part (32) to move along the axis of the fastener body (31) and the second sealing ring (33) closer to the axis of the connecting pipe (1).

2. The plumbing coupling according to claim 1, wherein: The fastener body (31) includes an arc-shaped portion (311), a connecting portion (312), and an elastic portion (313). The arc-shaped portion (311) has a plurality of arc-shaped portions arranged at intervals around the outer periphery of the second sealing ring (33). One or more connecting portions (312) are provided between each two adjacent arc-shaped portions (311). One end of the connecting portion (312) is fixedly connected to one of the two adjacent arc-shaped portions (311), and the other end is inserted into the other and the two are movably connected. One or more elastic portions (313) abut between each two adjacent arc-shaped portions (311).

3. The plumbing coupling according to claim 2, wherein: The elastic portion (313) is provided in a one-to-one correspondence with the connecting portion (312) and is sleeved on the outside of the corresponding connecting portion (312); and / or, The fastener body is ring-shaped.

4. The plumbing coupling according to Claim 1, wherein: A spherical body (321) is fixedly connected to the free end of the rod-shaped part (32).

5. The plumbing coupling according to Claim 1, wherein: The fastening mechanism has multiple sets of fastening components (3) arranged sequentially along the axial direction of the connecting pipe (1), and the multiple sets of fastening components (3) of the fastening mechanism share a fastening drive ring (4).

6. The plumbing coupling according to Claim 1, wherein: The inner side of the fastening drive ring (4) has a guide slope (421) that cooperates with the rod-shaped part (32). When the fastening drive ring (4) moves along the axial direction of the connecting pipe (1), the guide slope (421) can drive the rod-shaped part (32) to slide along the radial direction of the connecting pipe (1).

7. The plumbing coupling according to Claim 6, wherein: The fastening drive ring (4) includes a drive part (41) and a guide part (42). The drive part (41) is threaded to the outside of the connecting pipe (1), and the guide part (42) has the guide slope (421) on the inside.

8. The plumbing coupling according to Claim 1, wherein: The fastening mechanisms on both sides of the connecting pipe (1) are symmetrically arranged.

9. The plumbing coupling according to Claim 1, wherein: The water supply and drainage pipe connection device further includes limiting rings (5) respectively disposed at both ends of the connecting pipe (1), the limiting rings (5) having a limiting groove (51) on the side near the fastening drive ring (4), and the fastening drive ring (4) partially inserting into the limiting groove (51); and / or, The water supply and drainage pipe connection device also includes a screw (6) that fixes the fastening drive ring (4) to the connecting pipe (1).

10. The plumbing coupling according to Claim 1, wherein: The two end portions of the first sealing ring (2) are variable-diameter sections (21) with gradually increasing inner diameters from inside to outside.

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