Socket pressing type pipe fitting free of sealant
By setting grooves and transition parts or sealing rings in the insertion and press-fitting fittings, the cumbersome processes and high costs caused by the use of sealants are solved, and higher sealing performance and vibration resistance are achieved, and working pressure and vibration are improved. frequency.
Patent Information
- Application Number
- CN202420796693.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-17
AI Technical Summary
The existing plug-in press-fitting fittings need to be inserted into sealant when connecting, resulting in cumbersome processes and high installation costs. The residual sealant increases the difficulty of post-flushing and the risk of blocking the pipeline.
Set trenches in the bearing pipe or press-fit pipe, and place transition parts that match the grooves or use strip seals in the grooves to avoid the use of sealants. The design of grooves and transition parts is adopted when connecting Provides sealing effect.
The installation process is simplified, the cost is reduced, the sealing performance and vibration resistance are improved, the working pressure is increased to ≥6MPa, and the number of vibrations is increased to 1.5 million times without failure.
Smart Images
Figure CN222229745U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline connection devices, in particular to a sealing glue-free socket-and-spigot press-fit pipe fitting. Background Art
[0002] In the fields of water supply, gas supply, chemical industry, petroleum, electricity, fire protection, etc., socket-and-spigot compression fittings are widely used due to their advantages of easy use, reliable connection, and convenient maintenance. The working principle of socket-and-spigot compression fittings is to insert one end of the pipe into the socket part of another pipe, and then fix it by pressing or welding to form a sealed and stable connection.
[0003] The structure of current socket-and-spigot compression fittings is as follows: Figure 1 As shown, it includes a main pipe member 1 and an auxiliary pipe member 2 arranged at the pipe opening of the main pipe member 1, the main pipe member 1 includes a main pipe 11 and a pressing pipe 12 connected to the two ends of the main pipe 11, the main pipe 11 and the pressing pipe 12 are integrally formed, or the pressing pipe 12 is obtained by a hydraulic compression process at the end of the main pipe 11, and the two auxiliary pipe members 2 are respectively sleeved at the two pipe openings of the main pipe member 1; each of the auxiliary pipe members 2 includes a butt pipe 21 and a receiving pipe 22 connected to each other; the butt pipe 21 is inserted into the pressing pipe 12, and a gap 3 is provided between the receiving pipe 22 and the pressing pipe 12 to facilitate the insertion of a pipe 4, and the width d of the gap 3 is slightly larger than the wall thickness of the pipe 4.
[0004] The construction method of the socket-and-spigot compression-fit pipe of this structure is as follows: insert the pipe 4 into the gap 3 between the compression-fit pipe 12 and the socket pipe 22, and continue to penetrate until the end of the pipe 4 abuts against the connection between the abutting pipe 21 and the compression-fit pipe 12, and then inject sealant, such as anaerobic glue or AB glue, into the gap 3, and then use a clamping or ring pressing tool to lock the compression-fit pipe 12 and press it tightly according to the specified pressure.
[0005] Although such a structure improves the connection reliability to a certain extent, it requires the injection of sealant during connection. Such a structure and connection method have at least the following disadvantages: the process is cumbersome and the installation cost is increased; the residual sealant remains inside the pipe, increasing the difficulty of subsequent flushing and posing the risk of clogging the pipe. Utility Model Content
[0006] The purpose of the utility model is to provide a sealant-free socket-and-spigot press-fit pipe fitting to solve the above-mentioned problem.
[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a sealant-free socket-and-spigot compression-fit pipe fitting, comprising a main pipe fitting and an auxiliary pipe fitting inserted at the pipe opening of the main pipe fitting, the main pipe fitting comprising a main pipe and a compression-fit pipe connected to the end of the main pipe, the auxiliary pipe fitting comprising an abutment pipe and a socket pipe connected to each other, the abutment pipe being inserted in the compression-fit pipe, at least one groove being provided in the compression-fit pipe, or at least one groove being provided on the inner side of the socket pipe, and a transition piece matching the shape of the groove being provided in the groove; or a strip-shaped sealing ring being provided between the socket pipe and the pipe.
[0008] As a preferred technical solution: there is one groove, and the transition piece is in the shape of an O-ring and is arranged in the middle of the press-fit pipe or the receiving pipe. The position of the groove is not limited, but is preferably located in the middle of the receiving pipe or the press-fit pipe.
[0009] As a preferred technical solution: the number of the groove is one, the transition piece is in the shape of an annular belt, and the longitudinal section is a rectangle.
[0010] As a preferred technical solution: there are two grooves, and the transition piece is in the shape of an O-ring.
[0011] As a preferred technical solution: there are three grooves, and the transition piece is in the shape of an O-ring.
[0012] As a preferred technical solution: the material of the transition piece is a non-brittle material.
[0013] As a further preferred technical solution: the material of the transition piece is rubber, plastic or metal.
[0014] As a preferred technical solution, the main pipe is an elbow pipe, a straight pipe, a three-way pipe or a four-way pipe.
[0015] Compared with the prior art, the advantages of the utility model are: by appropriately arranging grooves and transition pieces, the utility model does not need to inject sealant when connecting with pipes, thereby simplifying the working process, saving installation costs, and eliminating the risk of sealant clogging the pipeline; and the sealing performance is improved by more than 1 times, from the original working pressure of ≥3MPa to ≥6MPa; the vibration resistance is improved by more than 50%, from the original 1 million vibrations without failure to 1.5 million vibrations without failure. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural diagram of the prior art of the utility model;
[0017] Figure 2 This is a structural diagram of Embodiment 1 of the present utility model;
[0018] Figure 3This is a structural diagram of Embodiment 2 of the present utility model;
[0019] Figure 4 This is a structural diagram of Embodiment 3 of the present utility model;
[0020] Figure 5 This is a structural diagram of Embodiment 4 of the present utility model;
[0021] Figure 6 This is a structural diagram of Embodiment 5 of the present utility model;
[0022] Figure 7 This is a structural diagram of Embodiment 6 of the present utility model;
[0023] Figure 8 This is a structural diagram of Embodiment 7 of the present utility model;
[0024] Fig. 9 This is a structural diagram of Embodiment 8 of the present utility model;
[0025] Fig.10 This is a structural diagram of Embodiment 9 of the present utility model;
[0026] Fig.11 This is a structural diagram of Embodiment 10 of the present utility model;
[0027] Fig.12 This is a structural diagram of embodiment 11 of the utility model.
[0028] In the figure: 1. main pipe; 11. main pipe; 12. press-fit pipe; 2. auxiliary pipe; 21. abutting pipe; 22. receiving pipe; 3. gap; 4. pipe; 5. groove; 6. transition piece; 7. strip sealing ring; 8. crimping tool. DETAILED DESCRIPTION
[0029] The utility model will be further described below in conjunction with the accompanying drawings.
[0030] Example 1
[0031] See also Figure 2 , a sealant-free socket-and-spigot compression-fit pipe fitting, comprising a main pipe fitting 1 and an auxiliary pipe fitting 2 plugged into the pipe opening of the main pipe fitting 1, the main pipe fitting 1 comprising a main pipe 11 and a compression-fitting pipe 12 connected to the end of the main pipe 11, the auxiliary pipe fitting 2 comprising a butt pipe 21 and a socket pipe 22 connected to each other, the butt pipe 21 being plugged into the compression-fitting pipe 12, a groove 5 being provided in the socket pipe 22, and a transition piece 6 matching the shape of the groove 5 being provided in the groove 5, in this embodiment, the transition piece 6 is in the shape of an O-ring and is provided in the middle position relative to the compression-fitting pipe 12, and the main pipe 11 is a straight-through pipe;
[0032] During installation and use, the pipe 4 is inserted into the gap 3 between the compression pipe 12 and the receiving pipe 22, and then crimped with an existing conventional crimping tool 8 to complete the installation.
[0033] Example 2
[0034] Compared with Example 1, the main pipe 11 of this embodiment is a three-way pipe, and the rest is the same as Example 1. Figure 3 shown.
[0035] Example 3
[0036] Compared with Example 1, the present embodiment has two grooves 5, which are symmetrically distributed in the middle of the press-fit tube 12, and the rest is the same as Example 1. Figure 4 shown.
[0037] Example 4
[0038] Compared with Example 1, the present embodiment has three grooves 5, which are symmetrically distributed in the middle of the press-fit tube 12, and the rest is the same as Example 1. Figure 5 shown.
[0039] Example 5
[0040] Compared with the first embodiment, the groove 5 is arranged inside the press-fit tube 12, and the rest is the same as the first embodiment. Figure 6 shown.
[0041] Example 6
[0042] Compared with Example 5, this embodiment has two grooves 5, which are symmetrically distributed in the middle of the press-fit tube 12, and the rest is the same as Example 5. Figure 7 shown.
[0043] Example 7
[0044] Compared with Example 5, this embodiment has three grooves 5, which are symmetrically distributed in the middle of the press-fit tube 12, and the rest is the same as Example 5. Figure 8 shown.
[0045] Example 8
[0046] Compared with the first embodiment, the groove 5 in this embodiment is also one, but the transition piece 6 is annular and has a rectangular longitudinal section. The rest is the same as the first embodiment. Fig. 9 shown.
[0047] Example 9
[0048] Compared with the fifth embodiment, the groove 5 in the present embodiment is also one, but the transition piece 6 is annular and has a rectangular longitudinal section. The rest is the same as the fifth embodiment. Fig.10 shown.
[0049] Example 10
[0050] Compared with the first embodiment, the present embodiment does not provide a groove, but a strip-shaped sealing ring 7 is provided between the receiving tube 22 and the pipe, and the rest is the same as the first embodiment. Fig.11 shown.
[0051] Embodiment 11
[0052] Compared with the first embodiment, the present embodiment does not have a groove, but a strip-shaped sealing ring 7 is provided between the pressing tube 12 and the pipe, and the rest is the same as the first embodiment. Fig.12 shown.
[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A sealant-free socket-and-spigot compression-fit pipe fitting, comprising a main pipe fitting (1) and an auxiliary pipe fitting (2) plugged into the pipe opening of the main pipe fitting (1), the main pipe fitting (1) comprising a main pipe (11) and a compression-fit pipe (12) connected to the end of the main pipe (11), the auxiliary pipe fitting (2) comprising an abutment pipe (21) and a socket pipe (22) connected to each other, the abutment pipe (21) being plugged into the compression-fit pipe (12), characterized in that: At least one groove (5) is formed in the compression tube (12), or at least one groove (5) is formed inside the receiving tube (22), and a transition piece (6) matching the shape of the groove is provided in the groove (5); or a strip-shaped sealing ring (7) is provided between the receiving tube (22) and the pipe.
2. The sealant-free socket-and-spigot press-fit pipe fitting according to claim 1, characterized in that: There is one groove (5), and the transition piece (6) is in the shape of an O-ring and is arranged in the middle of the press-fit pipe (12) or the receiving pipe (22).
3. The sealant-free socket-and-spigot press-fit pipe fitting according to claim 1, characterized in that: There is one groove (5), and the transition piece (6) is in the shape of an annular belt, with a longitudinal cross section in the shape of a rectangle.
4. The sealant-free socket-and-spigot press-fit pipe fitting according to claim 1, characterized in that: There are two grooves (5), and the transition piece (6) is in the shape of an O-ring.
5. The sealant-free socket-and-spigot press-fit pipe fitting according to claim 1, characterized in that: There are three grooves (5), and the transition piece (6) is in the shape of an O-ring.
6. The sealant-free socket-and-spigot press-fit pipe fitting according to claim 1, characterized in that: The material of the transition piece is a non-brittle material.
7. The sealant-free socket-and-spigot press-fit pipe fitting according to claim 6, characterized in that: The material of the transition piece is rubber, plastic or metal.
8. The sealant-free socket-and-spigot compression fitting according to claim 1, characterized in that: The main pipe (11) is an elbow pipe, a straight pipe, a three-way pipe or a four-way pipe.