Gas self-closing valve for gas pipe network

Abstract

The utility model discloses a fuel gas self-closing valve for a fuel gas pipe network, and relates to the technical field of fuel gas self-closing valves, the fuel gas self-closing valve comprises a fuel gas pipe, a round hole is formed in the top end of the interior of the fuel gas pipe, a strip-shaped groove is formed in the top of the outer side of the fuel gas pipe in a penetrating mode, the strip-shaped groove is communicated with the round hole, and a blocking mechanism is arranged at the top end of the fuel gas pipe. The blocking mechanism comprises a bearing plate, a blocking plate and a main shaft, and fixing mechanisms are symmetrically arranged on the two sides of the blocking mechanism. Due to the arrangement of the blocking mechanism and the fixing mechanism, when no gas leakage occurs in the gas pipe, the blocking mechanism is fixed by the fixing mechanism, so that the bearing plate abuts against the round hole, gas can flow in the gas pipe at the maximum flow speed, the gas can reach an ideal state when being used, and when the gas leakage occurs in the gas pipe, the blocking mechanism is fixed by the fixing mechanism. And the rotary blocking mechanism, the connecting rod and the blocking plate form a whole team to block the gas pipe, so that gas leakage is avoided, and explosion is avoided.

Description

Technical Field

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

[0002] Gas is a widely used gas fuel. Since gas is flammable, explosive and toxic, gas leakage can easily cause major safety accidents. Therefore, it is necessary to ensure that the gas entering the gas appliance is maintained at a normal pressure so that it can burn fully and stably. At present, a gas self-closing valve is installed in front of the gas appliance to automatically close the valve when overpressure or underpressure occurs to prevent gas leakage.

[0003] The existing valve blocking device is installed inside the gas pipeline. When the gas circulates inside the pipeline, the blocking device will occupy part of the pipeline space, slowing down the flow rate of the gas. When the gas is used, the combustion effect cannot reach the ideal state. Utility Model Content

[0004] In order to solve the above technical problems, a gas self-closing valve for a gas pipeline network is provided. The technical solution solves the problem that the existing valve blocking device proposed in the above background technology is installed inside the gas pipeline. When the gas circulates inside the pipeline, the blocking device will occupy part of the space of the pipeline, slowing down the flow rate of the gas. When the gas is used, the combustion effect cannot reach the ideal state.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A gas self-closing valve for a gas pipe network, comprising a gas pipe, a circular hole is provided at the inner top of the gas pipe, a strip groove is provided through the outer top of the gas pipe, a blocking mechanism is provided at the top of the gas pipe, and fixing mechanisms are symmetrically provided on both sides of the blocking mechanism;

[0007] Among them, the blocking mechanism includes a supporting plate, a blocking plate and a main shaft, the supporting plate abuts against the circular hole, the bottom end of the blocking plate is fixedly connected to the top center of the supporting plate, the main shaft is rotatably connected to the top center of the blocking plate, the outer surface of the main shaft is fixedly connected to a connecting rod, the top of the connecting rod is symmetrically provided with grooves, the top of the blocking plate is symmetrically provided with connecting grooves, the ends of the connecting rod are symmetrically provided with matching grooves, the interior of the connecting groove is provided with a first accommodating groove, the interior of the first accommodating groove is fixedly connected with a first limit spring, and the interior of the first accommodating groove is slidably connected with a first fixed block.

[0008] Preferably, the fixing mechanism includes a fixing rod, a second accommodating groove and a second limit spring, the bottom end of the fixing rod is fixedly connected to the top end of the gas pipe, the second accommodating groove is opened at the outer top of the fixing rod, the second limit spring is fixedly connected to the inside of the second accommodating groove, and the inside of the second accommodating groove is slidably connected with a second fixing block.

[0009] Preferably, the outer side of the blocking plate is slidably connected to the strip groove.

[0010] Preferably, the other end of the first limit spring is fixedly connected to the inner side of the first fixing block.

[0011] Preferably, the other end of the second limit spring is fixedly connected to the inner side of the second fixing block.

[0012] Preferably, the strip-shaped groove is communicated with the circular hole.

[0013] Preferably, the end of the connecting rod is slidably connected to the connecting groove.

[0014] Compared with the prior art, the utility model provides a gas self-closing valve for a gas pipeline network, which has the following

[0015] Beneficial effects:

[0016] The utility model is provided with a blocking mechanism and a fixing mechanism. When there is no gas leakage in the gas pipe, the fixing mechanism fixes the blocking mechanism so that the bearing plate abuts against the circular hole, and the gas can flow at a maximum flow rate in the gas pipe, so that the gas can reach an ideal state when used. When there is a gas leakage in the gas pipe, the blocking mechanism is rotated, and the connecting rod and the blocking plate form a team to block the gas pipe, thereby preventing the gas from leaking and causing an explosion. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic diagram of the internal structure of the gas pipe in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the blocking mechanism in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the blocking plate in the utility model;

[0021] Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at point A in the middle;

[0022] Figure 6 It is a structural schematic diagram of the connecting rod in the utility model;

[0023] Figure 7 It is a structural schematic diagram of the fixing mechanism in the utility model;

[0024] Figure 8 for Figure 7 Schematic diagram of the local enlarged structure at point B in the middle.

[0025] The numbers in the figure are:

[0026] 1. gas pipe; 101. round hole; 102. strip groove; 2. blocking mechanism; 201. bearing plate; 202. blocking plate; 203. main shaft; 204. connecting rod; 205. groove; 206. connecting groove; 207. matching groove; 208. first accommodating groove; 209. first limit spring; 210. first fixing block; 3. fixing mechanism; 301. fixing rod; 302. second accommodating groove; 303. second limit spring; 304. second fixing block. DETAILED DESCRIPTION

[0027] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0028] Reference Figure 1-2 As shown, a gas self-closing valve for a gas pipe network comprises a gas pipe 1, a circular hole 101 is provided at the inner top of the gas pipe 1, a strip groove 102 is provided through the outer top of the gas pipe 1, the strip groove 102 is communicated with the circular hole 101, a blocking mechanism 2 is provided at the top of the gas pipe 1, and fixing mechanisms 3 are symmetrically provided on both sides of the blocking mechanism 2;

[0029] Reference Figure 3-6As shown, the blocking mechanism 2 includes a bearing plate 201, a blocking plate 202 and a main shaft 203. The bearing plate 201 abuts against the circular hole 101. The bottom end of the blocking plate 202 is fixedly connected to the top center of the bearing plate 201. The size of the blocking plate 202 is consistent with the size of the strip groove 102 to prevent the gas from leaking from the connection between the strip groove 102 and the blocking plate 202 after blocking. The outer side of the blocking plate 202 is slidably connected to the strip groove 102. The main shaft 203 is rotatably connected to the top center of the blocking plate 202. The outer surface of the main shaft 203 is fixedly connected with a connecting rod 2 04, a groove 205 is symmetrically provided at the top of the connecting rod 204, a connecting groove 206 is symmetrically provided at the top of the blocking plate 202, the end of the connecting rod 204 is slidably connected to the connecting groove 206, the end of the connecting rod 204 is symmetrically provided with a matching groove 207, a first accommodating groove 208 is provided inside the connecting groove 206, a first limiting spring 209 is fixedly connected inside the first accommodating groove 208, a first fixing block 210 is slidably connected inside the first accommodating groove 208, and the other end of the first limiting spring 209 is fixedly connected to the inner side of the first fixing block 210.

[0030] Reference Figure 7-8 As shown, the fixing mechanism 3 includes a fixing rod 301, a second accommodating groove 302 and a second limiting spring 303. The bottom end of the fixing rod 301 is fixedly connected to the top end of the gas pipe 1. The second accommodating groove 302 is opened at the outer top of the fixing rod 301. The second limiting spring 303 is fixedly connected to the inside of the second accommodating groove 302. The inside of the second accommodating groove 302 is slidably connected with a second fixing block 304. The other end of the second limiting spring 303 is fixedly connected to the inner side of the second fixing block 304.

[0031] Example 1

[0032] When gas leaks, insert a finger into the groove 205, rotate the main shaft 203, the connecting rod 204 rotates to squeeze the second fixed block 304, the second fixed block 304 squeezes the second limit spring 303, when the second fixed block 304 completely enters the second accommodating groove 302, the end of the connecting rod 204 separates from the fixed rod 301, continue to rotate the main shaft 203, when the end of the connecting rod 204 enters the connecting groove 206, the end of the connecting rod 204 squeezes the first fixed block 210, the first fixed block 210 squeezes the first limit spring Spring 209, when the first fixing block 210 completely enters the first accommodating groove 208, and the connecting rod 204 and the blocking plate 202 are located on the same horizontal plane, the main shaft 203 is loosened, the first limit spring 209 is reset, and the first fixing block 210 enters the matching groove 207 to fix the connecting rod 204, so that the connecting rod 204 and the blocking plate 202 become a whole. At this time, the blocking plate 202 loses its upward supporting force and slides downward along the strip groove 102, completely blocking the gas pipe 1 to prevent gas leakage;

[0033] When there is no gas leakage, the second fixing block 304 is inserted into the matching groove 207 under the action of the second limit spring 303 to fix the blocking plate 202 to prevent the blocking plate 202 from slipping and causing blockage of the gas pipe 1, thereby reducing the gas flow rate and making the gas combustion fail to reach an ideal state.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas self-closing valve for a gas pipeline network, characterized in that: The gas pipe (1) comprises a gas pipe (1), wherein a circular hole (101) is provided at the inner top of the gas pipe (1), a strip groove (102) is provided through the outer top of the gas pipe (1), a blocking mechanism (2) is provided at the top of the gas pipe (1), and fixing mechanisms (3) are symmetrically provided on both sides of the blocking mechanism (2); The blocking mechanism (2) comprises a supporting plate (201), a blocking plate (202) and a main shaft (203); the supporting plate (201) is in contact with the circular hole (101); the bottom end of the blocking plate (202) is fixedly connected to the top center of the supporting plate (201); the main shaft (203) is rotatably connected to the top center of the blocking plate (202); a connecting rod (204) is fixedly connected to the outer surface of the main shaft (203); a groove (205) is symmetrically provided at the top of the connecting rod (204); a connecting groove (206) is symmetrically provided at the top of the blocking plate (202); a matching groove (207) is symmetrically provided at the end of the connecting rod (204); a first accommodating groove (208) is provided inside the accommodating groove (206); a first limit spring (209) is fixedly connected inside the first accommodating groove (208); and a first fixing block (210) is slidably connected inside the first accommodating groove (208).

2. A gas self-closing valve for a gas pipeline network according to claim 1, characterized in that: The fixing mechanism (3) comprises a fixing rod (301), a second receiving groove (302) and a second limit spring (303); the bottom end of the fixing rod (301) is fixedly connected to the top end of the gas pipe (1); the second receiving groove (302) is opened at the top of the outer side of the fixing rod (301); the second limit spring (303) is fixedly connected to the inside of the second receiving groove (302); and the inside of the second receiving groove (302) is slidably connected to a second fixing block (304).

3. A gas self-closing valve for a gas pipeline network according to claim 1, characterized in that: The outer side of the blocking plate (202) is slidably connected to the strip groove (102).

4. A gas self-closing valve for a gas pipeline network according to claim 1, characterized in that: The other end of the first limit spring (209) is fixedly connected to the inner side of the first fixing block (210).

5. A gas self-closing valve for a gas pipeline network according to claim 2, characterized in that: The other end of the second limit spring (303) is fixedly connected to the inner side of the second fixing block (304).

6. A gas self-closing valve for a gas pipeline network according to claim 1, characterized in that: The strip-shaped groove (102) is communicated with the circular hole (101).

7. A gas self-closing valve for a gas pipeline network according to claim 1, characterized in that: The end of the connecting rod (204) is slidably connected to the connecting groove (206).

Images