Gas pipeline self-closing valve

Abstract

The utility model relates to the technical field of fuel gas, in particular to a fuel gas pipeline self-closing valve which comprises a self-closing valve body, a communicating channel is arranged on the self-closing valve body in a communicating mode, two valves are arranged in the communicating channel, a filter screen is fixedly connected in the self-closing valve body, a connecting ring is arranged on one side of the filter screen, and the connecting ring is connected with the valve. A plurality of dredging columns are fixedly connected to the connecting ring, the dredging columns are aligned to meshes of the filter screen, and the connecting ring moves through a moving mechanism. The cleaning device does not need to be disassembled for cleaning, so that the convenience during dredging is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of gas technology, and in particular to a gas pipeline self-closing valve. Background Technology

[0002] A gas pipeline self-closing valve, or simply self-closing valve, is a safety device installed at the end of an indoor low-pressure gas pipeline and connected to an indoor gas stove. It senses gas pressure and automatically shuts off when the pressure is abnormal (such as underpressure, overpressure, or hose detachment) to prevent gas leakage and protect user safety. Sometimes, a filter element is installed inside the gas pipeline self-closing valve to filter the gas. However, when cleaning the filter element, the filter screen needs to be removed to unclog it, making the unclogging process cumbersome and complicated. Utility Model Content

[0003] The purpose of this utility model is to solve the problem that the existing technology requires the filter screen to be disassembled in order to unclog the filter screen, which makes the unclogging operation cumbersome and complicated. Therefore, a gas pipeline self-closing valve is proposed.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The design includes a gas pipeline self-closing valve body, a conduction channel connected to the self-closing valve body, two valves installed in the conduction channel, a filter screen fixedly connected inside the self-closing valve body, a connecting ring installed on one side of the filter screen, and multiple unblocking columns fixedly connected to the connecting ring, the multiple unblocking columns being aligned with the mesh of the filter screen, and the connecting ring being moved by a moving mechanism.

[0006] Preferably, the moving mechanism includes a connecting column, which is fixedly connected to the connecting ring. A threaded column is fixedly connected to the connecting column, and a threaded cylinder is threadedly connected to the threaded column. The threaded cylinder rotates through a rotating mechanism.

[0007] Preferably, a sealing ring is fixedly connected to the port of the threaded cylinder, and the sealing ring abuts against the connecting post.

[0008] Preferably, the rotating mechanism includes a second bevel gear, which meshes with a first bevel gear. A rotating shaft is fixedly connected to the first bevel gear, and the rotating shaft is rotatably connected to the self-closing valve body through a sealed bearing.

[0009] Preferably, an indicator block is fixedly connected to the rotating shaft.

[0010] Preferably, a protective shell is rotatably connected to the threaded cylinder via a sealed bearing, and the protective shell is rotatably connected to the rotating shaft via the sealed bearing.

[0011] Preferably, a limiting rod is provided through the connecting ring, and the limiting rod is fixedly connected to the inner wall of the self-closing valve body.

[0012] The self-closing valve for gas pipelines proposed in this utility model has the following advantages: by using a moving mechanism to drive the connecting ring to move, the blockage in the filter screen mesh is pushed out, clearing the mesh. The cleared blockage falls into the guide channel under the action of gravity. By opening the upper valve and then closing the upper valve, and opening the lower valve, the blockage can be discharged without disassembly and cleaning, thus facilitating the unblocking process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the gas pipeline self-closing valve proposed in this utility model;

[0014] Figure 2 This is a three-dimensional sectional view of the gas pipeline self-closing valve proposed in this utility model.

[0015] Figure 3 This is a partial cross-sectional view of the gas pipeline self-closing valve proposed in this utility model.

[0016] Figure 4 The gas pipeline self-closing valve proposed in this utility model Figure 2 Enlarged view of section A.

[0017] In the diagram: 1. Self-closing valve body; 2. Indicator block; 3. Conductor channel; 4. Valve; 5. Filter screen; 6. Unblocking column; 7. Connecting ring; 8. Limiting rod; 9. Rotating shaft; 10. Protective shell; 11. Connecting column; 12. Threaded cylinder; 13. First bevel gear; 14. Second bevel gear; 15. Threaded column. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example 1: Refer to Figure 1-4The gas pipeline self-closing valve includes a valve body 1, a guide channel 3 connected to the valve body 1, two valves 4 installed in the guide channel 3, a filter screen 5 fixedly connected inside the valve body 1, a connecting ring 7 installed on one side of the filter screen 5, and multiple unblocking columns 6 fixedly connected to the connecting ring 7. The multiple unblocking columns 6 are aligned with the mesh of the filter screen 5. The connecting ring 7 moves through a moving mechanism. By moving the connecting ring 7 through the moving mechanism, the unblocking columns 6 push out the blockage in the mesh of the filter screen 5, clearing the mesh. The cleared blockage falls into the guide channel 3 under the action of gravity. By opening the upper valve 4, then closing the upper valve 4, and then opening the lower valve 4, the blockage can be discharged without disassembly and cleaning, thus facilitating unblocking.

[0020] The moving mechanism includes a connecting column 11, which is fixedly connected to the connecting ring 7. A threaded column 15 is fixedly connected to the connecting column 11, and a threaded cylinder 12 is threadedly connected to the threaded column 15. The threaded cylinder 12 rotates through a rotating mechanism. By rotating the threaded cylinder 12, the position of the threaded column 15 in the threaded cylinder 12 is adjusted, thereby driving the connecting ring 7 to move.

[0021] A sealing ring is fixedly connected to the end of the threaded cylinder 12. The sealing ring abuts against the connecting post 11. The sealing ring serves to seal the cylinder and prevent dust and impurities from entering the threaded cylinder 12 and affecting the rotation of the thread.

[0022] A limiting rod 8 is installed through the connecting ring 7. The limiting rod 8 is fixedly connected to the inner wall of the self-closing valve body 1. By using the limiting rod 8 to limit the movement of the moving ring 7, the movement of the moving ring 7 is prevented from rotating, thereby ensuring that the mesh of the unblocking column 6 and the filter screen 5 are aligned.

[0023] The rotating mechanism includes a second bevel gear 14, which meshes with a first bevel gear 13. A rotating shaft 9 is fixedly connected to the first bevel gear 13. The rotating shaft 9 is rotatably connected to the self-closing valve body 1 through a sealed bearing. Rotating the rotating shaft 9 drives the first bevel gear 13 to rotate, which in turn drives the second bevel gear 14. The second bevel gear 14 is fixedly connected to the threaded cylinder 12, thereby driving the threaded cylinder 12 to rotate. Adjusting the position of the threaded column 15 in the threaded cylinder 12 causes the connecting ring 7 to move, and the unblocking column 6 pushes out the blockage in the mesh of the filter screen 5.

[0024] Example 2: Refer to Figure 1-3 As another preferred embodiment of this utility model, based on embodiment 1, an indicator block 2 is fixedly connected to the rotating shaft 9. The indicator block 2 is used to determine the position of the unblocking column 6, so as to prevent the unblocking column 6 from being blocked in the mesh during use and affecting the gas flow.

[0025] Example 3: Reference Figure 2-4 As another preferred embodiment of this utility model, based on embodiment 2, a protective shell 10 is rotatably connected to the threaded cylinder 12 via a sealed bearing. The protective shell 10 is rotatably connected to the rotating shaft 9 via the sealed bearing. By using the protective shell 10, the two bevel gears are protected, preventing dust from entering and affecting the transmission of the two bevel gears.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. Gas pipeline self-closing valve, comprising a self-closing valve body (1), characterized in that, The self-closing valve body (1) is provided with a guide channel (3) in communication, the guide channel (3) is provided with two valves (4), the self-closing valve body (1) is fixedly connected with a filter screen (5), one side of the filter screen (5) is provided with a connecting ring (7), a plurality of dredging columns (6) are fixedly connected on the connecting ring (7), a plurality of the dredging columns (6) are aligned with the mesh of the filter screen (5), and the connecting ring (7) is moved through a moving mechanism.

2. The gas pipe self-closing valve according to claim 1, characterized in that The moving mechanism comprises a connecting column (11), the connecting column (11) is fixedly connected on the connecting ring (7), the connecting column (11) is fixedly connected with a threaded column (15), the threaded column (15) is threadedly connected with a threaded cylinder (12), and the threaded cylinder (12) is rotated through a rotating mechanism.

3. A gas pipe self-closing valve according to claim 2, characterised in that The threaded cylinder (12) is fixedly connected with a sealing ring at the port, and the sealing ring is in abutment with the connecting column (11).

4. The gas pipe self-closing valve according to claim 2, characterized in that, The rotating mechanism comprises a second bevel gear (14), the second bevel gear (14) is engaged with a first bevel gear (13), the first bevel gear (13) is fixedly connected with a rotating shaft (9), and the rotating shaft (9) is rotatably connected with the self-closing valve body (1) through a sealing bearing.

5. A gas pipe self-closing valve according to claim 4, characterised in that The rotating shaft (9) is fixedly connected with an indicating block (2).

6. A gas pipe self-closing valve according to claim 5, characterised in that The threaded cylinder (12) is rotatably connected with a protective shell (10) through a sealing bearing, and the protective shell (10) is rotatably connected with the rotating shaft (9) through a sealing bearing.

7. The gas pipe self-closing valve according to claim 2, characterized in that, The connecting ring (7) is provided with a limiting rod (8) penetrating through, and the limiting rod (8) is fixedly connected on the inner wall of the self-closing valve body (1).

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