A pipeline gas self-closing valve

Abstract

The utility model discloses a pipeline gas self-closing valve, comprising a valve body and a fixing mechanism; the valve body: connecting ports are respectively provided at the left and right ends thereof, the inner walls of the connecting ports are provided with threaded grooves, and a movable rubber seat is provided inside the connecting port at the left end; the fixing mechanism: comprising a guide slide groove, a slide groove, a clamping block and a rubber pad, the guide slide grooves are provided at the left and right ends of the valve body, the middle part of the guide slide grooves is provided with slide grooves, the inner walls of the slide grooves are slidably connected with clamping blocks, the ends of the clamping blocks close to the center of the valve body are extended to the inside of the adjacent connecting ports, and the ends of the clamping blocks close to the center of the valve body are provided with rubber pads, the pipeline gas self-closing valve ensures that the connecting part of the pipeline gas self-closing valve has a stronger fixing force, significantly reduces the possibility of gas or liquid leakage caused by loose threads, and allows the connection to remain stable for a longer period of time.

Description

Technical Field

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

[0002] Pipeline gas self-closing valve usually refers to a valve used in pipeline systems. Its main function is to automatically close the valve in the event of an accident or emergency to prevent gas leakage or other safety issues. This valve design can automatically sense abnormal conditions, such as pipeline rupture, abnormal pressure, etc., and then quickly close the valve to play a role in protection and safety control;

[0003] Traditional pipeline gas self-closing valves are usually connected to the pipeline by threads when connected to the external pipeline, which can ensure that the valve is safely sealed and fixed to the pipeline to prevent leakage or accidental movement;

[0004] The traditional pipeline gas self-closing valve has the following problems: with the increase of time and frequency of use, the threaded connection parts may become loose or worn, resulting in a decrease in the sealing performance around the valve, thereby increasing the risk of leakage. For this reason, we propose a pipeline gas self-closing valve. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a pipeline gas self-closing valve, which ensures that the connection part of the pipeline gas self-closing valve has a stronger fixing force, significantly reduces the possibility of gas or liquid leakage caused by loose threads, and allows the connection to remain stable for a longer time, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipeline gas self-closing valve, comprising a valve body and a fixing mechanism;

[0007] Valve body: The left and right ends of the valve body are provided with connection ports, the inner walls of the connection ports are provided with threaded grooves, and a movable rubber seat is provided inside the connection port at the left end;

[0008] Fixing mechanism: It includes a guide slide groove, a slide groove, a clamping block and a rubber pad. The guide slide grooves are opened at the left and right ends of the valve body, a slide groove is opened in the middle of the guide slide groove, and the inner wall of the slide groove is slidably connected with a clamping block. The end of the clamping block close to the center of the valve body extends to the inside of the adjacent connecting port, and the end of the clamping block close to the center of the valve body is provided with a rubber pad, which ensures that the connection part of the pipeline gas self-closing valve has a stronger fixing force, significantly reduces the possibility of gas or liquid leakage caused by loose threads, and allows the connection to remain stable for a longer time.

[0009] Furthermore, it also includes an installation groove, which is opened at the top of the valve body, and the inner wall of the installation groove is slidably connected with a lifting button, the bottom end of the lifting button is fixedly connected with a valve stem, the bottom end of the valve stem extends to the interior of the valve body, and a diaphragm is provided at the bottom end of the valve stem, the outer surface of the diaphragm is fixedly connected to the upper end of the inner wall of the valve body, the lower surface of the diaphragm is fixedly connected to a connecting column, the left end of the outer surface of the connecting column is fixedly connected to a U-shaped seat, the interior of the U-shaped seat is rotatably connected to a connecting rod through a pin shaft, and the left end of the connecting rod is fixedly connected to the right side surface of the rubber seat, thereby controlling the flow of gas.

[0010] Furthermore, it also includes a sliding hole, a pillar and a second spring. The pillar is fixedly connected to the middle part of the bottom wall of the valve body. The sliding hole is opened at the bottom end of the connecting column. The inner wall of the sliding hole is slidably connected to the upper end of the pillar. The second spring is fixedly connected between the middle part of the bottom wall of the valve body and the lower surface of the connecting column. The second spring is sleeved on the outer surface of the pillar for easy resetting.

[0011] Furthermore, it also includes a reversing valve, which is arranged at the right end of the valve body to allow the flow and use of the gas.

[0012] Furthermore, the fixing mechanism also includes a support rod, a guide groove, a spring 1 and a fixing plate, the guide grooves are all opened inside the slide groove, the inner walls of the guide grooves are fixedly connected with support rods, the middle of the support rods are slidably connected with fixing plates, the ends of the fixing plates located in the same slide groove close to the center of the slide groove are fixedly connected to the outer side surface of a clamping block, the side of the fixing plate close to the center of the valve body is fixedly connected to the inner wall of the adjacent guide groove with a spring 1, and the spring 1 is sleeved on the outer surface of the support rod so that the clamping block can be contacted and fixed with the external pipe.

[0013] Furthermore, the fixing mechanism also includes a fixing block, a screw rod and an extrusion plate. There are four fixing blocks. Two fixing blocks are fixedly connected to the left and right ends of the valve body respectively. A screw rod is rotatably connected between two laterally adjacent fixing blocks. The middle part of the screw rod is threadedly connected to an extrusion plate. The inner side surfaces of the extrusion plates are slidably connected to the inner walls of the adjacent guide grooves. The inner side surfaces of the extrusion plates are cooperated and installed with the outer ends of the adjacent clamping blocks to drive the extrusion plates to move.

[0014] Furthermore, the fixing mechanism also includes a knob, and the knob is fixedly connected to the opposite outer ends of the screw rod to drive the fixing mechanism.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The external pipe is connected with the connection port of the external pipe through the threaded groove of the connection port, and then the knob is rotated. The knob drives the rotation of the screw rod, and the screw rod is connected with the extrusion plate through the thread, so that the extrusion plate gradually moves toward the clamping block along the inner wall of the guide slide groove. The movement trajectory and direction of the extrusion plate are ensured by the guide slide groove. When the extrusion plate moves to the outer side of the clamping block and contacts it, the knob continues to rotate to apply pressure, so that the extrusion plate generates an extrusion force on the clamping block, which can ensure that the clamping block is tightly fixed in the specified position, driving the clamping block to move in the slide groove along the outer surface of the support rod, and compressing the spring at the same time. The spring The compression increases the fixing force of the clamping block on the external pipe, ensuring the firmness and stability of the connection. It also helps to provide appropriate contact pressure between the external pipe and the clamping block. At this time, the rubber pad on the clamping block gradually contacts the outer surface of the external pipe. When the extrusion plate is completely covered and fixed on the clamping block, the clamping block is in full contact with the outer surface of the external pipe, thereby achieving safe fixation of the external pipe, ensuring that the connection part of the pipeline gas self-closing valve has a stronger fixing force, significantly reducing the possibility of gas or liquid leakage caused by loose threads, and allowing the connection to remain stable for a longer time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model in a front side section;

[0019] Figure 3 It is a schematic diagram of the structure of the utility model enlarged at A;

[0020] Figure 4 It is a structural schematic diagram of the utility model in left side section;

[0021] Figure 5 It is a schematic diagram of the structure enlarged at B of the utility model.

[0022] In the figure: 1 valve body, 2 fixing mechanism, 201 guide slide groove, 202 knob, 203 fixing block, 204 screw rod, 205 extrusion plate, 206 slide groove, 207 clamping block, 208 rubber pad, 209 support rod, 210 guide groove, 211 spring 1, 212 fixing plate, 3 lifting button, 4 reversing valve, 5 connecting port, 6 sliding hole, 7 pillar, 8 spring 2, 9 U-type seat, 10 connecting rod, 11 rubber seat, 12 connecting column, 13 valve stem, 14 mounting groove, 15 diaphragm. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-5 ,This embodiment provides a technical solution: a pipeline gas self-closing valve, including a valve body 1 and a fixing mechanism 2;

[0025] The valve body 1 has connecting ports 5 at its left and right ends respectively, and the inner walls of the connecting ports 5 are provided with threaded grooves. A movable rubber seat 11 is provided inside the connecting port 5 at the left end, and also includes a mounting groove 14. The mounting groove 14 is opened at the top of the valve body 1, and the inner wall of the mounting groove 14 is slidably connected with a lifting button 3. The bottom end of the lifting button 3 is fixedly connected with a valve stem 13, and the bottom end of the valve stem 13 extends to the inside of the valve body 1. A diaphragm 15 is provided at the bottom end of the valve stem 13. The outer surface of the diaphragm 15 is fixedly connected to the upper end of the inner wall of the valve body 1, and the lower surface of the diaphragm 15 is fixedly connected to a connecting column 12. The left end of the outer surface of the connecting column 12 is fixedly connected to a U-shaped seat 9, and the inside of the U-shaped seat 9 is rotatably connected to a connecting rod 10 through a pin shaft. The left end of the connecting rod 10 is fixedly connected to the right side surface of the rubber seat 11, and also includes a sliding hole 6, a pillar 7 and a spring 8. The pillar 7 is fixedly connected to the middle part of the bottom wall of the valve body 1, and the sliding hole 6 is opened at the bottom end of the connecting column 12. The inner The wall is slidably connected to the upper end of the pillar 7, and the spring 28 is fixedly connected between the middle part of the bottom wall of the valve body 1 and the lower surface of the connecting column 12. The spring 28 is sleeved on the outer surface of the pillar 7. When the gas pressure increases or decreases, the diaphragm 15 will deform, which will cause the connecting column 12 and the valve stem 13 to move upward, so that the button 3 is pushed out along the inner wall of the mounting groove 14. The connecting column 12 moves along the outer surface of the pillar 7 through the sliding hole 6 as the diaphragm deforms, and stretches the spring 28. The movement of the connecting column 12 also drives the connecting rod 10 to rotate around the pin shaft in the U-shaped seat 9. The rotation of the connecting rod 10 causes the rubber seat 11 to move laterally along the inner wall of the connecting port 5 until it contacts the delivery port inside the valve body 1. After the rubber seat 11 contacts the delivery port inside the valve body 1, the flow of gas is blocked, which plays the role of closing the valve. It also includes a reversing valve 4, which is arranged at the right end of the valve body 1. Opening the reversing valve 4 allows the flow and use of gas.

[0026] The fixing mechanism 2 includes a guide slot 201, a slot 206, a clamping block 207 and a rubber pad 208. The guide slots 201 are both provided at the left and right ends of the valve body 1. The middle of the guide slot 201 is provided with a slot 206. The inner wall of the slot 206 is slidably connected with a clamping block 207. The end of the clamping block 207 close to the center of the valve body 1 extends to the inside of the adjacent connecting port 5. The end of the clamping block 207 close to the center of the valve body 1 is provided with a rubber pad 208. The fixing mechanism 2 also includes a support rod 209, a guide slot 210, a spring 211 and a fixing plate 212. The guide slots 210 are both provided inside the slot 206. The inner walls of the guide slots 210 are fixedly connected with support rods 209. 9, the middle part of the support rod 209 is slidably connected with a fixed plate 212, and one end of the fixed plate 212 located in the same slide groove 206 close to the center of the slide groove 206 is fixedly connected to the outer side of a clamping block 207, and a spring 211 is fixedly connected between the side of the fixed plate 212 close to the center of the valve body 1 and the inner wall of the adjacent guide groove 210, and the spring 211 is sleeved on the outer surface of the support rod 209. The fixing mechanism 2 also includes a fixed block 203, a screw rod 204 and an extrusion plate 205. The number of the fixed blocks 203 is four, and the left and right ends of the valve body 1 are respectively fixedly connected to two fixed blocks 203, and the screw rod 204 is rotatably connected between the two horizontally adjacent fixed blocks 203. The middle part of 204 is threadedly connected with an extrusion plate 205, and the inner side surface of the extrusion plate 205 is slidably connected to the inner wall of the adjacent guide groove 201, and the inner side surface of the extrusion plate 205 is matched with the outer end of the adjacent clamping block 207. The fixing mechanism 2 also includes a knob 202, and the knob 202 is fixedly connected to the opposite outer end of the screw rod 204. The external pipeline is threadedly connected to the connecting port of the external pipeline through the thread groove of the connecting port 5, and then the knob 202 is rotated, and the knob 202 drives the rotation of the screw rod 204. The screw rod and the extrusion plate 205 are connected by threads, so that the extrusion plate 205 moves gradually toward the clamping block 207 along the inner wall of the guide groove 201, and passes through the guide groove 201 The movement trajectory and direction of the extrusion plate 205 are ensured. When the extrusion plate 205 moves to the outer side of the clamping block 207 and contacts it, the knob 202 continues to rotate to apply pressure, so that the extrusion plate 205 generates an extrusion force on the clamping block 207, driving the clamping block 207 to move along the outer surface of the support rod 209 in the slide groove 206, and at the same time compressing the spring 1 211, so that the rubber pad 208 on the clamping block 207 gradually contacts the outer surface of the external pipe. When the extrusion plate 205 completely covers and is fixed on the clamping block 207, the clamping block 207 is completely in contact with the outer surface of the external pipe, thereby achieving safe fixation of the external pipe and avoiding safety hazards caused by loose or worn threads.

[0027] The working principle of a pipeline gas self-closing valve provided by the utility model is as follows: first, the external pipeline is threadedly connected with the connecting port of the external pipeline through the threaded groove of the connecting port 5, and then the knob 202 is rotated, the knob 202 drives the rotation of the screw rod 204, and the screw rod is connected with the extrusion plate 205 through a thread, so that the extrusion plate 205 gradually moves toward the clamping block 207 along the inner wall of the guide slide groove 201, and the movement trajectory and direction of the extrusion plate 205 are ensured by the guide slide groove 201. When the extrusion plate 205 moves to the outer side surface of the clamping block 207 and contacts it, the knob 202 continues to rotate to apply pressure, so that the extrusion plate 205 generates an extrusion force on the clamping block 207, driving the clamping block 207 to move in the slide groove 206 along the outer surface of the support rod 209, and at the same time compressing the spring 1 211, so that the rubber pad 208 on the clamping block 207 gradually contacts the outer surface of the external pipeline. When the clamping block 207 is fully covered and fixed, the clamping block 207 is in full contact with the outer surface of the external pipeline, thereby achieving safe fixation of the external pipeline and avoiding safety hazards caused by loose or worn threads. Then the reversing valve 4 is opened to allow the flow and use of gas. When the gas pressure increases or decreases, the diaphragm 15 will deform, causing the connecting column 12 and the valve stem 13 to move upward, so that the button 3 is pushed out along the inner wall of the mounting groove 14. The connecting column 12 moves along the outer surface of the support 7 through the sliding hole 6 as the diaphragm deforms, and stretches the spring 2 8. The movement of the connecting column 12 also drives the connecting rod 10 to rotate around the pin shaft in the U-shaped seat 9. The rotation of the connecting rod 10 causes the rubber seat 11 to move laterally along the inner wall of the connecting port 5 until it contacts the delivery port inside the valve body 1. After the rubber seat 11 contacts the delivery port inside the valve body 1, it blocks the flow of gas and plays a role in closing the valve.

[0028] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pipeline gas self-closing valve, characterized in that: It comprises a valve body (1) and a fixing mechanism (2); The valve body (1) is provided with connection ports (5) at both left and right ends, and the inner walls of the connection ports (5) are provided with threaded grooves. A movable rubber seat (11) is provided inside the connection port (5) at the left end. The fixing mechanism (2) comprises a guide slide groove (201), a slide groove (206), a clamping block (207) and a rubber pad (208), wherein the guide slide groove (201) is provided at both left and right ends of the valve body (1), a slide groove (206) is provided in the middle of the guide slide groove (201), the inner wall of the slide groove (206) is slidably connected with a clamping block (207), one end of the clamping block (207) close to the center of the valve body (1) extends to the inside of the adjacent connecting port (5), and one end of the clamping block (207) close to the center of the valve body (1) is provided with a rubber pad (208).

2. A pipeline gas self-closing valve according to claim 1, characterized in that: The valve body (1) further comprises a mounting groove (14), wherein the mounting groove (14) is provided at the top end of the valve body (1), the inner wall of the mounting groove (14) is slidably connected with a lifting button (3), the bottom end of the lifting button (3) is fixedly connected with a valve stem (13), the bottom end of the valve stem (13) extends into the interior of the valve body (1), a diaphragm (15) is provided at the bottom end of the valve stem (13), the outer surface of the diaphragm (15) is fixedly connected with the upper end of the inner wall of the valve body (1), the lower surface of the diaphragm (15) is fixedly connected with a connecting column (12), the outer surface of the connecting column (12) is fixedly connected with a U-shaped seat (9) at the left end, the interior of the U-shaped seat (9) is rotatably connected with a connecting rod (10) via a pin shaft, and the left end of the connecting rod (10) is fixedly connected with the right side surface of the rubber seat (11).

3. A pipeline gas self-closing valve according to claim 2, characterized in that: It also includes a sliding hole (6), a pillar (7) and a second spring (8), wherein the pillar (7) is fixedly connected to the middle part of the bottom wall of the valve body (1), the sliding hole (6) is opened at the bottom end of the connecting pillar (12), the inner wall of the sliding hole (6) is slidably connected to the upper end of the pillar (7), the second spring (8) is fixedly connected between the middle part of the bottom wall of the valve body (1) and the lower surface of the connecting pillar (12), and the second spring (8) is sleeved on the outer surface of the pillar (7).

4. A pipeline gas self-closing valve according to claim 1, characterized in that: It also comprises a reversing valve (4), wherein the reversing valve (4) is arranged at the right end of the valve body (1).

5. The pipeline gas self-closing valve according to claim 1, characterized in that: The fixing mechanism (2) further comprises a support rod (209), a guide groove (210), a spring (211) and a fixing plate (212); the guide grooves (210) are all opened inside the slide groove (206); the support rods (209) are fixedly connected between the inner walls of the guide grooves (210); the middle part of the support rods (209) is slidably connected with the fixing plate (212); the fixing plate (212) located in the same slide groove (206) has one end close to the center of the slide groove (206) fixedly connected to the outer side surface of a clamping block (207); the fixing plate (212) is fixedly connected between one side of the fixing plate (212) close to the center of the valve body (1) and the inner wall of the adjacent guide groove (210); and the spring (211) is sleeved on the outer surface of the support rod (209).

6. A pipeline gas self-closing valve according to claim 1, characterized in that: The fixing mechanism (2) further comprises a fixing block (203), a screw rod (204) and an extrusion plate (205), wherein the number of the fixing blocks (203) is four, and two fixing blocks (203) are respectively fixedly connected to the left and right ends of the valve body (1), and a screw rod (204) is rotatably connected between two laterally adjacent fixing blocks (203), and the middle part of the screw rod (204) is threadedly connected to an extrusion plate (205), and the inner side surface of the extrusion plate (205) is slidably connected to the inner wall of the adjacent guide groove (201), and the inner side surface of the extrusion plate (205) is matched and installed with the outer end of the adjacent clamping block (207).

7. A pipeline gas self-closing valve according to claim 6, characterized in that: The fixing mechanism (2) further comprises a knob (202), and the knob (202) is fixedly connected to the opposite outer ends of the screw rod (204).

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