Multifunctional replaceable loose joint

Abstract

One end of the multifunctional replaceable loose joint is used for being connected with a water pipe, the other end of the multifunctional replaceable loose joint is used for being connected with a valve, a protruding ring is arranged at the end of the water pipe, the multifunctional replaceable loose joint comprises a pipeline sleeving piece, an elastic clamping ring and a valve connecting piece, a baffle ring and a sleeving internal thread are arranged in the pipeline sleeving piece, and the pipeline sleeving piece penetrates through the protruding ring to be arranged on the water pipe in a sleeving mode. The elastic clamping ring is movably clamped on the water pipe through the elastic opening, one end of the elastic clamping ring abuts against the inner end face of the convex ring, and the other end of the elastic clamping ring abuts against the baffle ring and is used for preventing the pipeline sleeving piece from disengaging from the convex ring; a connecting external thread, a connecting internal thread and a positioning ring are arranged in the valve connecting piece, the connecting external thread is fixedly connected with the sleeving internal thread, the connecting internal thread is connected with the valve thread, and a sealing ring is arranged between the positioning ring and the end face of the valve. When the pipeline connecting piece is installed, an old convex ring on the pipeline does not need to be cut off, a new pipeline sleeving piece can be replaced without re-welding, and parts such as a valve and the like can be conveniently maintained and replaced.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection technology, and in particular to a multifunctional replaceable union joint. Background Technology

[0002] Bathroom plumbing typically includes numerous valves, with movable connectors between the valves and the pipes. These connectors are usually secured by a heat-fused convex ring at the pipe end, which locks the connector to the valve. These valves on the pipes need to be replaced if they are damaged or have reached the end of their service life.

[0003] Because the valve installation space reserved after the pipeline was cut during the initial installation was determined based on the size of the old valves, and the valves installed in the pipeline are of various specifications and types, and the lengths and connection thread sizes of valves produced by different manufacturers are often different, it is difficult for new valves to match the old connection joints on the pipeline when replacing valves. It is often necessary to cut off the convex ring on the end of the pipeline, then put the new connection joint on the pipeline, and finally heat-melt a new convex ring on the end of the pipeline to complete the connection and installation of the new valve. The valve replacement is very troublesome and requires professional personnel to spend a lot of time to replace it. Improvement is needed. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a multifunctional replaceable union connector that is easy to install on pipelines. During installation, it can utilize the existing convex ring on the pipeline for a fixed connection, eliminating the need to cut off the existing convex ring or re-weld the pipeline. It is convenient to install and use, and facilitates the maintenance and replacement of valves and other components.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multifunctional replaceable union fitting has one end for connecting to a water pipe and the other end for connecting to a valve. The end of the water pipe is provided with a convex ring. The fitting includes a pipe sleeve, an elastic retaining ring, and a valve connector. The pipe sleeve has a retaining ring and an internal thread. The pipe sleeve passes through the convex ring and is fitted onto the water pipe. The elastic retaining ring has an elastic opening. The elastic retaining ring is movably fitted onto the water pipe through the elastic opening, with one end pressed against the inner end face of the convex ring and the other end pressed against the retaining ring to prevent the pipe sleeve from coming out of the convex ring. The valve connector has an external thread, an internal thread, and a positioning ring. The external thread is fixedly connected to the internal thread, and the internal thread is connected to the valve thread. A sealing ring is provided between the positioning ring and the valve end face.

[0007] Furthermore, the inner diameter of the elastic retaining ring is greater than the outer diameter of the water pipe and less than the outer diameter of the convex ring, and the outer diameter of the elastic retaining ring is greater than the inner diameter of the retaining ring and less than the inner diameter of the sleeve internal thread.

[0008] Furthermore, the inner diameter of the retaining ring is larger than the outer diameter of the convex ring.

[0009] Furthermore, the pipe fitting is provided with a first locking operation part.

[0010] Furthermore, the valve connector is provided with a second locking operation part, which includes an outwardly protruding edge or an inwardly recessed edge.

[0011] Furthermore, the diameter of the central hole of the positioning ring is larger than the outer diameter of the water pipe.

[0012] Furthermore, a recess is provided on the valve connector outside the positioning ring.

[0013] Furthermore, the valve connector is provided with internal threads of different specifications.

[0014] This utility model has the following beneficial effects:

[0015] This invention features a pipe fitting that can pass through an old convex ring on a pipe, and an elastic retaining ring that can be movably secured to the water pipe after the elastic opening is opened. This allows for easy fixing of the pipe fitting to the inside of the old convex ring on the pipe. During installation, there is no need to cut off the old convex ring or re-weld the pipe to replace the new pipe fitting. The pipe fitting also connects to a valve connector and a sealing ring, ensuring a reliable sealing connection. The threads of the valve connector can be selected and replaced according to the type and size of the valve. This makes installation and use convenient and facilitates the maintenance and replacement of valves and other components. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the multifunctional replaceable union connector of this utility model.

[0017] Figure 2 This is a cross-sectional schematic diagram of the multifunctional replaceable union connector of this utility model.

[0018] Figure 3 This is a three-dimensional schematic diagram of the water pipe of this utility model.

[0019] Figure 4 This is a three-dimensional schematic diagram of the pipe fitting of this utility model.

[0020] Figure 5 This is a three-dimensional schematic diagram of the elastic retaining ring of this utility model.

[0021] Figure 6This is one of the three-dimensional schematic diagrams of a valve connector structure according to this utility model.

[0022] Figure 7 This is a second three-dimensional schematic diagram of a valve connector structure according to this utility model.

[0023] Figure 8 This is one of the three-dimensional schematic diagrams of another structure of the valve connector of this utility model.

[0024] Figure 9 This is a second perspective view of another structure of the valve connector of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Water pipe; 11. Convex ring; 2. Valve; 3. Pipe fitting; 31. Retaining ring; 32. Internal thread of fitting; 33. First locking operating part; 4. Elastic retaining ring; 41. Elastic opening; 5. Valve connector; 51. External thread of connection; 52. Internal thread of connection; 53. Positioning ring; 54. Second locking operating part; 541. External convex edge; 542. Internal countersunk edge; 55. Recessed platform; 6. Sealing ring; 7. Sealing gasket. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0028] See Figure 1-9 As shown, a multifunctional replaceable union connector has one end for connecting to a water pipe 1 and the other end for connecting to a valve 2. The end of the water pipe 1 is provided with a protruding ring 11, which includes a pipe fitting 3, an elastic retaining ring 4, and a valve connector 5. The pipe fitting 3 is provided with a retaining ring 31 and an internal thread 32. The pipe fitting 3 passes through the protruding ring 11 and is fitted onto the water pipe 1. The elastic retaining ring 4 is provided with an elastic opening 41. The elastic retaining ring 4 is movably fitted onto the water pipe 1 through the elastic opening 41, with one end pressed against the inner end face of the protruding ring 11 and the other end pressed against the retaining ring 31 to prevent the pipe fitting 3 from coming off the protruding ring 11. The inner diameter of the elastic retaining ring 4 is larger than the outer diameter of the water pipe 1 and smaller than the outer diameter of the protruding ring 11. The outer diameter of the elastic retaining ring 4 is larger than the inner diameter of the retaining ring 31 and smaller than the inner diameter of the internal thread 32. The inner diameter of the retaining ring 31 is larger than the outer diameter of the convex ring 11; the valve connector 5 is provided with an external connecting thread 51, an internal connecting thread 52 and a positioning ring 53, the external connecting thread 51 is fixedly connected to the internal connecting thread 32, the internal connecting thread 52 is threadedly connected to the valve 2, and a sealing ring 6 is provided between the positioning ring 53 and the end face of the valve 2; the valve connector 5 is provided with internal connecting threads 52 of different specifications, which facilitates selection and replacement according to different valve types and sizes.

[0029] Further, see Figure 4 As shown, the pipe fitting 3 is provided with a first locking operation part 33, such as an external hexagon or octagon; see also Figure 6-9 As shown, the valve connector 5 is provided with a second locking operation part 54. The second locking operation part 54 includes an outwardly protruding edge 541 or an inwardly recessed edge 542, an external hexagon or octagon, or an internal hexagon or octagon, a wrench slot, etc., to facilitate locking the pipe fitting 3, the valve connector 5 and the valve 2.

[0030] Furthermore, the diameter of the center hole of the positioning ring 53 is larger than the outer diameter of the water pipe 1, so as to avoid the water pipe 1 extending out of the convex ring 11 (in some installation pipelines, a section of protruding water pipe 1 will be set outside the convex ring 11).

[0031] The valve connector 5 on the outer side of the positioning ring 53 is provided with a recess 55. The plane of the recess 55 is convenient for sealing and docking with the outer end face of the convex ring 11. A sealing gasket 7 can also be provided between the recess 55 and the outer end face of the convex ring 11 for sealing. A sealing tape or sealant can be provided at the threaded connection between the pipe sleeve 3 and the valve connector 5 to further ensure the seal.

[0032] During installation, the old valve on the water pipe 1 is first removed. Then, the old union on the water pipe 1 is pushed away from the convex ring 11 at the end of the pipe. The pipe fitting 3 is then passed through the convex ring 11 and fitted onto the water pipe 1. The elastic opening 41 is then pried open, and the elastic retaining ring 4 is movably fitted onto the water pipe 1. The sealing ring 6 and the valve connector 5 are installed on the pipe fitting 3. The pipe fitting 3 is pushed so that the elastic retaining ring 4 is pressed against the convex ring 11. The elastic retaining ring 4 is pressed against the inner end face of the retaining ring 31, thereby preventing the pipe fitting 3 from coming out of the convex ring 11. The valve connector 5 is used to tighten the pipe fitting 3 and the valve 2 together.

[0033] The above description is only a specific embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multifunctional replaceable union, one end of which is used to connect to a water pipe (1) and the other end of which is used to connect to a valve (2), wherein the end of the water pipe (1) is provided with a protruding ring (11), characterized in that: The device includes a pipe fitting (3), an elastic retaining ring (4), and a valve connector (5). The pipe fitting (3) has a retaining ring (31) and an internal thread (32). The pipe fitting (3) passes through the convex ring (11) and is fitted onto the water pipe (1). The elastic retaining ring (4) has an elastic opening (41). The elastic retaining ring (4) is movably fitted onto the water pipe (1) through the elastic opening (41), with one end close to the inner end face of the convex ring (11) and the other end... The retaining ring (31) is used to prevent the pipe fitting (3) from coming out of the convex ring (11); the valve connector (5) is provided with an external thread (51), an internal thread (52) and a positioning ring (53). The external thread (51) is fixedly connected to the internal thread (32), the internal thread (52) is threadedly connected to the valve (2), and a sealing ring (6) is provided between the positioning ring (53) and the end face of the valve (2).

2. The multifunctional replaceable union according to claim 1, characterized in that: The inner diameter of the elastic retaining ring (4) is greater than the outer diameter of the water pipe (1) and less than the outer diameter of the convex ring (11). The outer diameter of the elastic retaining ring (4) is greater than the inner diameter of the retaining ring (31) and less than the inner diameter of the sleeve internal thread (32).

3. A multifunctional replaceable union according to claim 2, characterized in that: The inner diameter of the retaining ring (31) is larger than the outer diameter of the convex ring (11).

4. A multifunctional replaceable union according to claim 1, characterized in that: The pipe fitting (3) is provided with a first locking operation part (33).

5. A multifunctional replaceable union according to claim 1, characterized in that: The valve connector (5) is provided with a second locking operation part (54), which includes an outwardly protruding edge (541) or an inwardly recessed edge (542).

6. A multifunctional replaceable union according to claim 1, characterized in that: The diameter of the central hole of the positioning ring (53) is larger than the outer diameter of the water pipe (1).

7. A multifunctional replaceable union according to claim 1, characterized in that: The valve connector (5) outside the positioning ring (53) is provided with a recess (55).

8. A multifunctional replaceable union according to claim 1, characterized in that: The valve connector (5) is provided with internal threads (52) of different specifications.

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