Self-closing valve for gas pipe network

Abstract

The utility model relates to the technical field of gas self-closing valves, in particular to a self-closing valve for a gas pipe network, which comprises a mounting pipe and a self-closing valve body, a fixing ring is fixedly mounted on the mounting pipe, a locking ring is rotatably connected onto the fixing ring, a first connecting pipe is arranged on the self-closing valve body, and a second connecting pipe is arranged on the first connecting pipe. A limiting groove is formed in the end, away from the self-closing valve body, of the first connecting pipe, by arranging the limiting groove, a sealing gasket and a pushing assembly, the sealing gasket is firstly placed in the limiting groove, so that the sealing ring is conveniently pre-fixed, the sealing gasket is extruded by the mounting pipe, the sealing gasket is evenly deformed in the limiting groove, and the sealing effect is improved; and when the sealing gasket needs to be replaced, the locking ring is reversely rotated, so that the locking ring is separated from the first connecting pipe, the mounting pipe is moved out of the limiting groove, the movable ring is driven to move under the action of the multiple springs, the movable ring pushes the sealing gasket, the sealing gasket is prevented from being bonded in the limiting groove, the sealing gasket is conveniently taken out and replaced, and the convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas self-closing valves, in particular to a self-closing valve for a gas pipeline network. Background Art

[0002] The pipeline gas self-closing valve is installed on the pipeline of the low-pressure gas system. When the pipeline gas supply pressure is underpressure, overpressure or gas outage, it can automatically close without electricity or other external power and needs to be opened manually. Nowadays, with the increasing use of civil gas pipelines, the use of pipeline gas self-closing valves has also increased.

[0003] For example, the Chinese patent with publication number CN219911901U discloses a gas self-closing valve, including a self-closing valve body and a connecting pipe, a self-closing valve cover is fixedly installed on the left side of the top of the self-closing valve body, a switch knob is installed on the right side of the top of the self-closing valve body, the left end of the self-closing valve body is connected to an internal thread head, the right end of the self-closing valve body is fixedly installed with an external thread head, and an elastic pressure component is installed on the left side of the inner cavity of the internal thread head. The gas self-closing valve is used in conjunction with the elastic pressure component and the receiving groove, and the displacement block can radially squeeze the sealing ring when the connecting screw head is installed, effectively improving the installation stability of the sealing ring and ensuring the installation sealing between the connecting screw head and the internal thread head.

[0004] The above-mentioned patent discloses a method of fixing the sealing ring by moving a displacement block. In actual use, since the joint of the gas self-closing valve is relatively small, it is difficult to fix the sealing ring by moving a plurality of displacement blocks. It is also not convenient to pre-fix the sealing ring. When replacing the sealing ring, the sealing ring may become stuck, making it inconvenient to remove and replace it. The practicality is not high. Therefore, the utility model proposes a self-closing valve for a gas pipeline network to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a self-closing valve for a gas pipeline network to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-closing valve for a gas pipeline network, comprising a mounting tube and a self-closing valve body, a fixing ring being fixedly mounted on the mounting tube, a locking ring being rotatably connected to the fixing ring, a first connecting tube being arranged on the self-closing valve body, a second connecting tube being arranged on the side of the self-closing valve body away from the first connecting tube, a limiting groove being provided at one end of the first connecting tube away from the self-closing valve body, a sealing gasket being arranged in the limiting groove, a pushing assembly for quickly replacing the sealing gasket being arranged in the limiting groove, one end of the mounting tube extending into the limiting groove and abutting against the sealing gasket.

[0007] Preferably, a connector is fixedly mounted on one end of the second connecting pipe away from the self-closing valve body, a switch valve is arranged on the second connecting pipe, an internal thread is provided inside the locking ring, and an external thread matching the internal thread is provided on the first connecting pipe.

[0008] Preferably, the pushing assembly comprises a moving ring and a sliding rod, a spring and a moving groove, and the pushing assembly is slidably connected in the limiting groove.

[0009] Preferably, the sliding rods, springs and movable grooves are of the same number and are all provided in plural numbers, and the plurality of sliding rods are installed in a circular array at one end of the movable ring away from the mounting tube.

[0010] Preferably, the plurality of springs are respectively sleeved on the plurality of sliding rods, the plurality of movable groove annular arrays are opened in the limiting groove, and the other ends of the plurality of sliding rods are respectively extended into the plurality of movable grooves and are slidably connected with the first connecting tube.

[0011] Preferably, one end of the spring is fixedly connected in the movable groove, and the other end of the spring is fixedly connected to an end of the movable ring away from the mounting tube.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] By providing a limiting groove, a sealing gasket and a pushing component, the sealing gasket is first placed in the limiting groove to facilitate pre-fixation of the sealing ring. The installing tube squeezes the sealing gasket so that the sealing gasket is uniformly deformed in the limiting groove, and the sealing effect is improved. When the sealing gasket needs to be replaced, the locking ring is reversed to separate the locking ring from the first connecting tube, and the installing tube is moved out of the limiting groove. Under the action of multiple springs, the moving ring is driven to move, and the moving ring pushes the sealing gasket to prevent the sealing gasket from sticking to the limiting groove, so that the sealing gasket can be taken out and replaced conveniently, and the convenience is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the driving component of the utility model;

[0016] Figure 3 This is a schematic diagram of the sealing gasket installation structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the locking ring structure of the utility model.

[0018] In the figure: 1. mounting tube; 2. fixing ring; 3. locking ring; 4. first connecting tube; 5. self-closing valve body; 6. limiting groove; 7. sealing gasket; 8. pushing assembly; 9. switch valve; 10. second connecting tube; 11. connecting head; 81. moving ring; 82. sliding rod; 83. spring; 84. moving groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 4 The utility model provides a technical solution: a self-closing valve for a gas pipeline network, comprising a mounting tube 1 and a self-closing valve body 5, a fixing ring 2 is fixedly mounted on the mounting tube 1, a locking ring 3 is rotatably connected to the fixing ring 2, a first connecting tube 4 is arranged on the self-closing valve body 5, a second connecting tube 10 is arranged on the side of the self-closing valve body 5 away from the first connecting tube 4, a limiting groove 6 is arranged at one end of the first connecting tube 4 away from the self-closing valve body 5, a sealing gasket 7 is arranged in the limiting groove 6, a pushing component 8 for quickly replacing the sealing gasket 7 is arranged in the limiting groove 6, one end of the mounting tube 1 extends into the limiting groove 6 and abuts against the sealing gasket 7, and by setting A limiting groove 6, a sealing gasket 7 and a pushing component 8 are provided. The sealing gasket 7 is first placed in the limiting groove 6 to facilitate pre-fixation of the sealing ring. The installing tube 1 squeezes the sealing gasket 7 so that the sealing gasket 7 is uniformly deformed in the limiting groove 6, and the sealing effect is improved. When the sealing gasket 7 needs to be replaced, the locking ring 3 is reversed to separate the locking ring 3 from the first connecting tube 4, and the installing tube 1 is moved out of the limiting groove 6. Under the action of multiple springs 83, the moving ring 81 is driven to move, and the moving ring 81 pushes the sealing gasket 7 to prevent the sealing gasket 7 from sticking to the limiting groove 6, so that the sealing gasket 7 can be taken out and replaced conveniently, and the convenience is improved.

[0021] A connector 11 is fixedly installed at one end of the second connecting pipe 10 away from the self-closing valve body 5, a switch valve 9 is arranged on the second connecting pipe 10, an internal thread is provided inside the locking ring 3, and an external thread matching the internal thread is provided on the first connecting pipe 4. By rotating the locking ring 3, the internal thread on the locking ring 3 matches with the external thread on the first connecting pipe 4, so that the locking ring 3 and the first connecting pipe 4 are locked.

[0022] The pushing assembly 8 includes a moving ring 81, a sliding rod 82, a spring 83 and a moving groove 84. The pushing assembly 8 is slidably connected in the limiting groove 6. The number of sliding rods 82, springs 83 and moving grooves 84 is the same and are all set in multiples. Multiple sliding rods 82 are installed in a circular array at one end of the moving ring 81 away from the mounting tube 1. The mounting tube 1 drives the sealing gasket 7 to contact the moving ring 81 and squeeze the moving ring 81. The moving ring 81 drives the sliding rod 82 to slide into the first connecting tube 4. The spring 83 is deformed and moves into the moving groove 84. The mounting tube 1 squeezes the sealing gasket 7, so that the sealing gasket 7 is evenly deformed in the limiting groove 6 to achieve a sealing effect.

[0023] Multiple springs 83 are respectively mounted on multiple sliding rods 82, and multiple moving grooves 84 are arranged in a ring array in the limiting groove 6. The other ends of the multiple sliding rods 82 extend into the multiple moving grooves 84 respectively and are slidably connected to the first connecting tube 4. One end of the spring 83 is fixedly connected in the moving groove 84, and the other end of the spring 83 is fixedly connected to an end of the moving ring 81 away from the mounting tube 1. When the sealing gasket 7 needs to be replaced, the locking ring 3 is reversed to separate the locking ring 3 from the first connecting tube 4, and the mounting tube 1 is moved out of the limiting groove 6. Under the action of the multiple springs 83, the moving ring 81 is driven to move, and the moving ring 81 pushes the sealing gasket 7 to prevent the sealing gasket 7 from sticking in the limiting groove 6, making it convenient to remove and replace the sealing gasket 7.

[0024] Working principle: In actual use, the sealing gasket 7 is first placed in the limiting groove 6 to facilitate pre-fixing of the sealing ring, and then one end of the installation tube 1 is extended into the limiting groove 6, and one end of the installation tube 1 contacts the sealing gasket 7. By rotating the locking ring 3, the internal thread on the locking ring 3 cooperates with the external thread on the first connecting tube 4, so that the locking ring 3 and the first connecting tube 4 are locked. In this process, the installation tube 1 drives the sealing gasket 7 to contact with the moving ring 81 and squeezes the moving ring 81, and the moving ring 81 drives the sliding rod 82 to slide into the first connecting tube 4. When the sealing gasket 7 needs to be replaced, the locking ring 3 is reversed to separate the locking ring 3 from the first connecting tube 4, and the mounting tube 1 is moved out of the limiting groove 6. Under the action of multiple springs 83, the movable ring 81 is driven to move, and the movable ring 81 pushes the sealing gasket 7 to prevent the sealing gasket 7 from sticking in the limiting groove 6, so as to facilitate the removal and replacement of the sealing gasket 7, thereby improving the convenience.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-closing valve for a gas pipe network, comprising a mounting pipe (1) and a self-closing valve body (5), characterized in that: A fixing ring (2) is fixedly mounted on the mounting tube (1), a locking ring (3) is rotatably connected to the fixing ring (2), a first connecting tube (4) is arranged on the self-closing valve body (5), a second connecting tube (10) is arranged on the side of the self-closing valve body (5) away from the first connecting tube (4), a limiting groove (6) is provided at one end of the first connecting tube (4) away from the self-closing valve body (5), a sealing gasket (7) is arranged in the limiting groove (6), a pushing component (8) for quickly replacing the sealing gasket (7) is arranged in the limiting groove (6), and one end of the mounting tube (1) extends into the limiting groove (6) and abuts against the sealing gasket (7).

2. A self-closing valve for a gas pipe network according to claim 1, characterized in that: A connector (11) is fixedly mounted on one end of the second connecting pipe (10) away from the self-closing valve body (5); a switch valve (9) is arranged on the second connecting pipe (10); an internal thread is provided inside the locking ring (3); and an external thread matching the internal thread is provided on the first connecting pipe (4).

3. A self-closing valve for a gas pipe network according to claim 2, characterized in that: The pushing assembly (8) comprises a moving ring (81), a sliding rod (82), a spring (83) and a moving groove (84); the pushing assembly (8) is slidably connected in the limiting groove (6).

4. A self-closing valve for a gas pipe network according to claim 3, characterized in that: The sliding rods (82), springs (83) and movable grooves (84) are of the same number and are all provided in plural numbers. The plurality of sliding rods (82) are installed in a circular array at one end of the movable ring (81) away from the mounting tube (1).

5. A self-closing valve for a gas pipe network according to claim 4, characterized in that: The plurality of springs (83) are respectively sleeved on the plurality of sliding rods (82); the plurality of movable grooves (84) are arranged in a circular array in the limiting groove (6); the other ends of the plurality of sliding rods (82) respectively extend into the plurality of movable grooves (84) and are slidably connected to the first connecting tube (4).

6. A self-closing valve for a gas pipe network according to claim 5, characterized in that: One end of the spring (83) is fixedly connected in the movable groove (84), and the other end of the spring (83) is fixedly connected to an end of the movable ring (81) away from the mounting tube (1).

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