Socket and spigot joint

Abstract

The utility model discloses a socket type pipe joint, which relates to the field of drainage pipes and comprises a two-way joint, two pipelines are arranged in the two-way joint, the end faces of the two pipelines are abutted against each other, and sealing rings are arranged on the inner walls of the two ends of the two-way joint corresponding to the pipelines. A groove corresponding to the sealing ring is formed in the inner wall of the two-way connector. According to the utility model, the gland, the two-way joint and the snap spring are arranged, the gland and the two-way joint are connected through the hexagon bolt and the hexagon nut, the gland applies pressure to the snap spring in the connecting process, and after the saw-toothed snap spring is mounted in the conical groove, a self-locking mechanism can be formed due to the special shape design of the saw-toothed snap spring; therefore, the pipeline is stably fixed in the two-way joint, the steps of the pipe joint mounting and dismounting process are reduced, the time needed by replacement or maintenance is shortened on the occasion where the pipe joint needs to be frequently replaced or maintained, and the maintenance efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of drainage pipes, specifically to a socket-type pipe joint. Background Technology

[0002] A pipeline is a system of pipes, pipe fittings, valves, and other components used to transport gases, liquids, or fluids containing solid particles. Typically, fluids are pressurized by blowers, compressors, pumps, and boilers, flowing from high-pressure areas to low-pressure areas within the pipeline. Alternatively, the fluid's own pressure or gravity can be used for transport. Pipelines have a wide range of applications, primarily in water supply, drainage, heating, gas supply, long-distance transport of oil and natural gas, agricultural irrigation, hydraulic engineering, and various industrial installations.

[0003] Existing technologies have the following problems: the installation and disassembly process of traditional pipe fittings is relatively cumbersome and requires professional tools and technicians. This not only increases installation costs and time, but also reduces the maintainability and flexibility of the pipeline system. Especially in situations where pipe fittings need to be frequently replaced or repaired, this cumbersome installation and disassembly process has become an important factor restricting the efficient operation of the pipeline system. Utility Model Content

[0004] To solve the above-mentioned technical problems, a socket-type pipe fitting is provided, which solves the problem that the current pipe fitting installation and disassembly process is relatively cumbersome.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A socket-type pipe fitting includes a bidirectional connector. The bidirectional connector has two pipes internally arranged, with the end faces of the two pipes abutting each other. A sealing ring is provided on the inner wall of each end of the bidirectional connector corresponding to the pipe. A groove corresponding to the sealing ring is formed on the inner wall of the bidirectional connector. A pressure cap is fitted on each end of the double-ended connector corresponding to the sealing ring. A retaining spring is provided between the pressure cap and the double-ended connector. A gasket is provided between the retaining spring and the sealing ring. The bidirectional connector and the pressure cap are connected by a plurality of hexagonal bolts and hexagonal nuts, which are threaded together. The plurality of hexagonal bolts are circumferentially distributed about the centerline of the pipe.

[0007] Preferably, the outer surface of the bidirectional connector is fixedly equipped with a plurality of first lugs corresponding to hexagonal bolts, and the plurality of first lugs are circumferentially distributed about the center line of the bidirectional connector.

[0008] Preferably, the outer surface of the pressure cap is fixedly equipped with two second lugs for hexagonal bolts, the two second lugs are symmetrically distributed about the center line of the pressure cap, and the inner wall of the pressure cap is provided with a conical groove corresponding to the retaining spring.

[0009] Preferably, the sealing ring is made of fluororubber.

[0010] Preferably, the inside of the retaining ring is serrated, and the cross-section of the retaining ring is trapezoidal.

[0011] Preferably, the retaining ring and the tapered groove are interference fit, and the fit tolerance is 1mm-2mm.

[0012] Preferably, the sealing ring and the groove are fitted with a clearance, and the fit tolerance is 1mm-2mm.

[0013] Compared with the prior art, the advantages of this utility model are as follows: This utility model sets up a pressure cap, a two-way connector, and a retaining spring. The pressure cap is connected to the two-way connector by hexagonal bolts and hexagonal nuts. During the connection process, the pressure cap applies pressure to the retaining spring. After the serrated retaining spring is installed into the conical groove, its special shape design forms a self-locking mechanism, thereby making the pipe stably fixed in the two-way connector. This reduces the steps in the installation and disassembly process of the pipe connector. In situations where pipe connectors need to be frequently replaced or repaired, it reduces the time required for replacement or repair, thereby improving maintenance efficiency. The serrated internal structure and trapezoidal cross-section design of the specially made retaining spring not only enhances the interlocking force between the retaining spring and the conical groove, but also improves the overall structural strength of the pipe connector. This design allows the pipe connector to remain stable and undeformed when subjected to high pressure, vibration, or impact loads, thereby significantly extending the service life of the pipe connector. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a three-dimensional structural diagram of the bidirectional connector in this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the pressure cap in this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the snap ring in this utility model.

[0019] The numbers in the diagram are: 1. Two-way connector; 2. Pipe; 3. Sealing ring; 4. Gland; 5. Snap ring; 6. Gasket; 7. Hex bolt; 8. Hex nut. Detailed Implementation

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0021] Reference Figure 1-5 As shown, a socket-type pipe fitting includes a two-way connector 1. The two-way connector 1 has two pipes 2 inside, with their end faces abutting each other. Sealing rings 3 are provided on the inner walls of both ends of the two-way connector 1 corresponding to the pipes 2. Grooves corresponding to the sealing rings 3 are formed on the inner walls of the two-way connector 1. Pressure caps 4 are fitted onto both ends of the double-ended connector corresponding to the sealing rings 3. A retaining spring 5 is provided between the pressure cap 4 and the double-ended connector. A gasket 6 is provided between the retaining spring 5 and the sealing ring 3. The gasket 6 ensures that the pressure applied by the pressure cap 4 to the sealing ring 3 is uniform and moderate, preventing damage to the sealing ring 3 due to excessive pressure. The two-way connector 1 and the pressure cap 4 are connected by several hexagonal bolts 7 and hexagonal nuts 8. The nut 8 is threaded, and several hexagonal bolts 7 are circumferentially distributed around the center line of the pipe 2. When connecting the two pipes 2, the operator needs to place two pressure caps 4 on the outer surfaces of the two pipes 2 respectively, and then place the retaining spring 5, gasket 6 and sealing ring 3 inside the pressure cap 4 in sequence. Then, the two pipes 2 are placed in the two-way joint 1, and the pressure cap 4 and the two-way joint 1 are connected by several hexagonal bolts 7 and hexagonal nuts 8, so that the pressure cap 4 applies pressure to the retaining spring 5, thereby fixing the two-way joint 1 at the connection of the two pipes 2. When the pipe 2 is transporting liquid or gas, the sealing ring 3 prevents the fluid or gas from leaking from the connection of the pipe 2, ensuring the sealing performance of the pipe joint.

[0022] like Figure 3 As shown, several first lugs corresponding to hexagonal bolts 7 are fixedly installed on the outer surface of the bidirectional joint 1. The several first lugs are circumferentially distributed about the center line of the bidirectional joint 1. The first lugs serve as the force points for the hexagonal bolts 7 and hexagonal nuts 8. The circumferential distribution helps to distribute the force during hoisting or fixing, avoiding deformation or damage to the pipe joint caused by single-point force.

[0023] like Figure 4 As shown, two second lugs with hexagonal bolts 7 are fixedly installed on the outer surface of the pressure cap 4. The two second lugs are symmetrically distributed about the center line of the pressure cap 4. The inner wall of the pressure cap 4 has a conical groove corresponding to the retaining spring 5. When installing the pressure cap 4, the cooperation between the hexagonal bolts 7 and the second lugs can quickly and accurately position the pressure cap 4 to the corresponding position of the bidirectional connector 1, ensuring the correct alignment between the pressure cap 4 and the bidirectional connector 1. When the pressure cap 4 is fastened to the bidirectional connector 1 by the hexagonal bolts 7, the conical groove ensures that the retaining spring 5 is firmly locked in the predetermined position, so that the retaining spring 5 will not fall off or move due to external force. When it is necessary to maintain or replace the internal components of the pipe connector, the pressure cap 4 can be easily removed from the bidirectional connector 1 by loosening the hexagonal bolts 7.

[0024] like Figure 2As shown, the sealing ring 3 is made of fluororubber. Due to its excellent elasticity and high resilience, fluororubber can fit tightly into the groove of the bidirectional joint 1 to form an effective sealing layer, preventing fluid or gas from leaking from the connection of the pipe 2. Fluororubber has excellent corrosion resistance to a variety of chemicals, including acids, alkalis, oils, and solvents, enabling the fluororubber sealing ring 3 to maintain stable sealing performance in harsh chemical environments and extend the service life of the pipe joint. Fluororubber has high high-temperature resistance, which can maintain its physical and sealing performance in high-temperature environments, which is crucial for pipe joints that need to work under high-temperature conditions. The fluororubber sealing ring 3 has good aging resistance, which can resist the erosion of environmental factors such as ultraviolet rays and ozone, and maintain its elasticity and sealing performance for a long time.

[0025] like Figure 5 As shown, the inside of the retaining ring 5 is serrated, and the cross-section of the retaining ring 5 is trapezoidal. When the retaining ring 5 is installed in the conical groove, the serrated retaining ring 5 can be more firmly locked in the groove, effectively preventing the retaining ring 5 from falling off or loosening when subjected to external force, thereby enhancing the fixing effect of the pipe joint. After the serrated retaining ring 5 is installed in the conical groove, due to its special shape design, it can form a self-locking mechanism. The self-locking function allows the retaining ring 5 to remain stably locked in the conical groove when not subjected to external force, and it will not easily move due to vibration or slight external force, thus improving the stability and safety of the pipe joint. When the pressure cap 4 is fastened to the bidirectional joint 1 by the hexagonal bolt 7, the retaining ring 5 will be subjected to pressure from the pressure cap 4. The trapezoidal cross-section design allows this pressure to be distributed more evenly on the entire surface of the retaining ring 5, avoiding damage or deformation of the retaining ring 5 due to excessive local pressure.

[0026] like Figure 1-5 As shown, the retaining ring 5 and the conical groove are fitted with an interference fit, and the fit tolerance is 1mm-2mm. When the retaining ring 5 is installed in the conical groove, the retaining ring 5 will produce a certain elastic deformation, thus tightly fitting against the inner wall of the conical groove. The fit tolerance is controlled within the range of 1mm-2mm, so that the retaining ring 5 can generate appropriate preload during installation. The preload not only helps to maintain the tight connection between the retaining ring 5 and the conical groove, but also can offset the pressure fluctuations that may occur in the pipeline 2 system to a certain extent, ensuring the sealing performance of the pipe joint. With appropriate tools and force, the retaining ring 5 can be smoothly installed into the conical groove. At the same time, the existence of the fit tolerance also provides the possibility for adjustment after installation, so as to ensure the overall performance and sealing effect of the pipe joint.

[0027] like Figure 1-5As shown, the sealing ring 3 and the groove adopt a clearance fit with a tolerance of 1mm-2mm. The clearance fit means that the diameter of the sealing ring 3 is slightly smaller than the diameter of the groove, providing sufficient space for the installation of the sealing ring 3. In the pipeline system 2, due to changes in temperature, pressure and other factors, the sealing ring 3 may undergo certain deformation or expansion. In the actual manufacturing and installation process, due to factors such as processing accuracy, material deformation and installation deviation, there may be certain errors between the sealing ring 3 and the groove. The clearance fit and appropriate fit tolerance can effectively compensate for these errors, ensuring that the sealing ring 3 can maintain the correct position in the groove, thereby meeting the sealing requirements. At the same time, the sealing ring 3 will deform during the compression of the gasket 6. After deformation, the sealing ring 3 can be stably fixed in the groove.

[0028] Working principle: When connecting two pipes 2, the operator needs to place two pressure caps 4 on the outer surfaces of the two pipes 2 respectively, and then place the retaining spring 5, gasket 6 and sealing ring 3 inside the pressure cap 4 in sequence. Then, the two pipes 2 are placed in the two-way connector 1, and the first lug and the second lug are connected by several hexagonal bolts 7 and hexagonal nuts 8, so that the pressure cap 4 and the two-way connector 1 are connected. During the connection process between the pressure cap 4 and the two-way connector 1, the sealing ring 3 will deform under the compression of the gasket 6. After deformation, the sealing ring 3 can be stably fixed in the groove to ensure the seal between the groove and the pipe 2. At the same time, the pressure cap 4 applies pressure to the retaining spring 5. After the serrated retaining spring 5 is installed in the conical groove, its special shape design can form a self-locking mechanism. The self-locking function allows the retaining spring 5 to remain stably locked in the conical groove when not subjected to external force.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A socket-type pipe fitting, comprising a bidirectional fitting (1), characterized in that: The bidirectional connector (1) has two pipes (2) inside, and the end faces of the two pipes (2) abut against each other. The inner walls of both ends of the bidirectional connector (1) corresponding to the pipes (2) are provided with sealing rings (3). The inner wall of the bidirectional connector (1) is provided with grooves corresponding to the sealing rings (3). Both ends of the double-ended connector corresponding to the sealing rings (3) are fitted with pressure caps (4). A retaining ring (5) is provided between the pressure cap (4) and the double-ended connector. A gasket (6) is provided between the retaining ring (5) and the sealing ring (3). The bidirectional connector (1) and the pressure cap (4) are connected by several hexagonal bolts (7) and hexagonal nuts (8). The hexagonal bolts (7) and hexagonal nuts (8) are threaded together. The several hexagonal bolts (7) are circumferentially distributed about the center line of the pipes (2).

2. The socket-type pipe fitting according to claim 1, characterized in that: The outer surface of the bidirectional connector (1) is fixedly equipped with several first lugs corresponding to hexagonal bolts (7), and the several first lugs are circumferentially distributed about the center line of the bidirectional connector (1).

3. A socket-type pipe fitting according to claim 1, characterized in that: The outer surface of the pressure cap (4) is fixedly installed with two second lugs for hexagonal bolts (7). The two second lugs are symmetrically distributed about the center line of the pressure cap (4). The inner wall of the pressure cap (4) is provided with a conical groove corresponding to the snap ring (5).

4. A socket-type pipe fitting according to claim 1, characterized in that: The sealing ring (3) is made of fluororubber.

5. A socket-type pipe fitting according to claim 1, characterized in that: The inside of the retaining ring (5) is serrated, and the cross section of the retaining ring (5) is trapezoidal.

6. A socket-type pipe fitting according to claim 3, characterized in that: The retaining ring (5) and the tapered groove are interference fit, and the fit tolerance is 1mm-2mm.

7. A socket-type pipe fitting according to claim 1, characterized in that: The sealing ring (3) and the groove are fitted with a clearance, and the fit tolerance is 1mm-2mm.

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