Safety gas stop valve

Abstract

The utility model discloses a safety type fuel gas stop valve which comprises a first shell and a second shell, a ball valve is arranged between a first clamping ring and a second clamping ring, a first gear is arranged outside the first shell, a second gear is arranged outside the second shell, and the first gear and the second gear are meshed together and connected with the ball valve through a shaft rod. The ball valve abuts against the first clamping ring, the second clamping ring and the inner wall of the first shell and the inner wall of the second shell at the positions of the sliding grooves, stability of the position of the ball valve is guaranteed, gas leakage is avoided, when the rotating handle is rotated, the first gear rotates to drive the ball valve in the first shell to rotate, meanwhile, the second gear rotates to drive the ball valve in the second shell to rotate, and gas leakage is avoided. The two ball valves are opened at the same time to circulate fuel gas, and the two ball valves are closed at the same time to block the fuel gas, so that the problem that the fuel gas valve is not closed tightly is greatly solved, reliable operation of equipment is guaranteed, and safety accidents caused by fuel gas leakage are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas valves, and in particular relates to a safety gas stop valve. Background Art

[0002] Gas valves are safety devices used in gas pipeline projects. They are used to cut off, connect, and regulate gas in pipelines, offering excellent control characteristics and sealing performance. They are suitable for use on pipelines carrying various fuel media, including city gas, liquefied petroleum gas, natural gas, and oxygen.

[0003] As time goes by, the gas valve is prone to not closing tightly, causing gas leakage and thus leading to safety accidents. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a safety gas stop valve.

[0005] The utility model is implemented as follows: a safety gas shut-off valve comprises a first shell and a second shell of the same size and structure, which limit the ball valve, the outer walls of the first shell and the second shell are connected by a plurality of first bolts to ensure a firm and reliable connection between the first shell and the second shell, a through groove is provided through the center of the cross section of the first shell and the second shell for gas circulation, a first clamping groove is provided in the first shell and the second shell, a first clamping ring is provided at the first clamping groove, the first clamping ring is tightly against the inner walls of the first shell and the second shell to ensure the stability of the position of the first clamping ring, and then the position of the ball valve is limited by the first clamping ring, the openings of the ends of the first shell and the second shell are provided with a second clamping groove, and the second clamping groove is provided with a second clamping ring. The second clamping ring is tightly pressed against the inner walls of the first shell and the second shell at the same time to ensure the stability of the position of the second clamping ring, and then the position of the ball valve is limited by the second clamping ring. The inner walls of the first shell and the second shell are both provided with a slide groove to smoothly support the ball valve. The outer diameter of the first clamping ring is smaller than the outer diameter of the second clamping ring, which is convenient for sequentially placing the first clamping ring, the ball valve and the second clamping ring into the first shell and the second shell. A ball valve is provided between the first clamping ring and the second clamping ring to circulate and block the gas through the ball valve. A first through hole is opened in the middle of the ball valve, and the gas in the through groove flows along the first through hole. The ball valve is pressed against the first clamping ring, the second clamping ring and the inner walls of the first shell and the second shell at the slide groove, which not only ensures the stability of the ball valve position but also avoids gas leakage.

[0006] The side walls of the first shell and the second shell are both provided with a second through hole, the outer wall of the first shell is fixedly provided with a first shell with an opening facing the second shell to protect the first gear, and the outer wall of the second shell is fixedly provided with a second shell with an opening facing the first shell to protect the second gear. The first shell and the second shell have the same size and structure and can be butted together at the openings to ensure a sealed environment and prevent the first gear and the second gear from rusting. The side walls of the first shell and the second shell are both provided with an axial hole, the position of the axial hole corresponds to the second through hole and the aperture is the same, the first shell is provided with a first gear, the second shell is provided with a second gear, the first gear is provided in the first gear, the second shell is provided in the second gear, the first gear is provided in the first gear, the first gear is provided in the second gear, the first gear is provided in the second gear. The wheel and the second gear have the same diameter and the same number of teeth, ensuring that the first gear and the second gear have the same rotation speed, the first gear and the second gear are meshed together, and the connection is reliable. A shaft rod is symmetrically fixed at the middle position of both ends of the first gear and the second gear, one end of the shaft rod passes through the second through hole and is connected to the ball valve, and the other end of the shaft rod passes through the shaft hole. A turning handle is fixed on one end of the shaft rod connected to the first gear. When the turning handle is turned, the first gear rotates, thereby driving the ball valve in the first shell to rotate. At the same time, the second gear rotates, driving the ball valve in the second shell to rotate, the two ball valves open at the same time to circulate the gas, and the two ball valves close at the same time to block the gas.

[0007] Preferably, the ball valve is provided with a rotating groove near the second through hole, and a rotating block is fixedly provided at one end of the shaft rod near the ball valve. The rotating block corresponds to the position of the rotating groove and is the same size as the rotating groove. The rotating block is arranged in the rotating groove, and the shaft rod drives the rotating block to rotate, thereby driving the ball valve to rotate, which facilitates the installation and replacement of the ball valve.

[0008] Preferably, the first clamp ring and the second clamp ring are both provided with ball grooves on one side close to the ball valve, and the ball grooves correspond to the position of the ball valve and match the size, ensuring a tight and reliable connection between the first clamp ring, the second clamp ring and the ball valve to prevent gas leakage.

[0009] Preferably, an annular groove is provided at the middle position of the outer wall of the first clamping ring and the second clamping ring, and a sealing ring is provided in the annular groove to prevent leakage of gas.

[0010] Preferably, a first stopper and a second stopper are symmetrically fixedly provided on the outside of the shaft hole at the upper end of the first shell, and a baffle is fixedly provided on the shaft between the upper end of the first shell and the turning handle. The positions of the first stopper, the second stopper and the baffle correspond to each other, and the rotation angle of the ball valve is limited. When the shaft is rotated so that the baffle and the first stopper are abutted together, the ball valve opens, and when the shaft is rotated so that the baffle and the second stopper are abutted together, the ball valve closes.

[0011] Preferably, the first shell and the second shell are connected by a plurality of second bolts to ensure a reliable connection between the first shell and the second shell.

[0012] The beneficial effects of the utility model are as follows: the first shell and the second shell are connected together, and the ball valve is pressed against the first clamping ring, the second clamping ring and the inner walls of the first shell and the second shell at the slide groove, which not only ensures the stability of the ball valve position, but also avoids gas leakage. When the handle is rotated, the first gear rotates, thereby driving the ball valve in the first shell to rotate. At the same time, the second gear rotates, driving the ball valve in the second shell to rotate, the two ball valves are opened at the same time to circulate gas, and the two ball valves are closed at the same time to block the gas. The arrangement of the first gear, the second gear and the double ball valves greatly reduces the problem of loose closure of the gas valve, ensures the reliable operation of the equipment, and avoids safety accidents caused by gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 Schematic diagram of the structure of the first shell and the second shell;

[0015] Figure 3 It is a top view schematic diagram of the connection structure between the rotary block and the ball valve;

[0016] Figure 4 is a side view of the end portion of the first shell;

[0017] Figure 5 Schematic diagram of the positional relationship between the first stopper, the second stopper and the baffle;

[0018] In the figure: 1. First housing; 2. Second housing; 3. First bolt; 4. Through groove; 5. First retaining groove; 6. First retaining ring; 7. Second retaining groove; 8. Second retaining ring; 9. Slide groove; 10. Ball valve; 11. First through hole; 12. Second through hole; 13. First outer shell; 14. Second outer shell; 15. Shaft hole; 16. First gear; 17. Second gear; 18. Shaft rod; 19. Turning handle; 20. Rotating groove; 21. Rotating block; 22. Ball groove; 23. Ring groove; 24. Sealing ring; 25. Second bolt; 26. First stopper; 27. Second stopper; 28. Baffle. DETAILED DESCRIPTION

[0019] In order to more clearly understand the technical solution of the present invention, the present invention is further described below with reference to the accompanying drawings.

[0020] like Figure 1-5The safety gas shut-off valve shown in the figure includes a first shell 1 and a second shell 2 of the same size and structure, which limit the ball valve 10. The outer walls of the first shell 1 and the second shell 2 are connected by multiple first bolts 3 to ensure a firm and reliable connection between the first shell 1 and the second shell 2. A through groove 4 is opened through the center of the cross section of the first shell 1 and the second shell 2 for gas circulation. A first clamping groove 5 is provided in each of the first shell 1 and the second shell 2. A first clamping ring 6 is provided at the first clamping groove 5. The first clamping ring 6 is tightly abutted against the inner walls of the first shell 1 and the second shell 2. To ensure the stability of the position of the first clamping ring 6, the position of the ball valve 10 is further limited by the first clamping ring 6. The openings at the ends of the first shell 1 and the second shell 2 are both provided with second clamping grooves 7, and the second clamping grooves 7 are provided with second clamping rings 8. The second clamping ring 8 is tightly pressed against the inner walls of the first shell 1 and the second shell 2 at the same time to ensure the stability of the position of the second clamping ring 8, and the position of the ball valve 10 is further limited by the second clamping ring 8. The middle position of the outer wall of the first clamping ring 6 and the second clamping ring 8 is provided with an annular groove 23, and a sealing ring 24 is provided in the annular groove 23 to prevent gas leakage. The inner walls of the first shell 1 and the second shell 2 are both provided with a slide groove 9 to smoothly support the ball valve 10. The outer diameter of the first clamp ring 6 is smaller than the outer diameter of the second clamp ring 8, which is convenient for sequentially placing the first clamp ring 6, the ball valve 10 and the second clamp ring 8 into the first shell 1 and the second shell 2. A ball valve 10 is provided between the first clamp ring 6 and the second clamp ring 8, and the gas is circulated and blocked by the ball valve 10. A first through hole 11 is provided in the middle of the ball valve 10, and the gas in the through groove 4 flows along the first through hole 11. The ball valve 10 is pressed against the inner walls of the first shell 1 and the second shell 2 at the first clamp ring 6, the second clamp ring 8 and the slide groove 9, which not only ensures the stability of the position of the ball valve 10, but also avoids the occurrence of To prevent gas leakage, a second through hole 12 is provided on the side walls of the first shell 1 and the second shell 2, and a first shell 13 with an opening facing the second shell 2 is fixedly provided on the outer wall of the first shell 1 to protect the first gear 16, and a second shell 14 with an opening facing the first shell 1 is fixedly provided on the outer wall of the second shell 2 to protect the second gear 17. The first shell 13 and the second shell 14 have the same size and structure and can be docked together at the openings to ensure a sealed environment and prevent the first gear 16 and the second gear 17 from rusting. The first shell 13 and the second shell 14 are connected by multiple second bolts 25 to ensure a reliable connection between the first shell 13 and the second shell 14.The side walls of the first housing 13 and the second housing 14 are both provided with an axial hole 15, and the position of the axial hole 15 corresponds to the position of the second through hole 12 and the aperture is the same. A first gear 16 is provided in the first housing 13, and a second gear 17 is provided in the second housing 14. The first gear 16 and the second gear 17 have the same diameter and the same number of teeth, ensuring that the first gear 16 and the second gear 17 have the same speed. The first gear 16 and the second gear 17 are meshed together and the connection is reliable. The first gear 16 and the second gear 17 are meshed together and the connection is reliable. Axles 18 are symmetrically fixed at the center of each end of the wheel 17. One end of the axle 18 passes through the second through-hole 12 and is connected to the ball valve 10. The ball valve 10 has a rotation slot 20 near the second through-hole 12. A rotating block 21 is fixed to the end of the axle 18 near the ball valve 10. The rotating block 21 is located at the same position and size as the rotation slot 20. The rotating block 21 is installed in the rotation slot 20. The axle 18 drives the rotating block 21 to rotate, thereby driving the ball valve 10 to rotate, making it easy to install and replace the ball valve 10. The other end of the axle 18 passes through the axial hole 15. A rotating handle 19 is fixed to one end of the axle 18 connected to the first gear 16. Turning the rotating handle 19 rotates the first gear 16, which in turn rotates the ball valve 10 in the first housing 1. At the same time, the second gear 17 rotates, driving the ball valve 10 in the second housing 2. Both ball valves 10 open simultaneously, allowing the gas to circulate, and both ball valves 10 close simultaneously, blocking the gas.

[0021] A ball groove 22 is provided on one side of the first clamp ring 6 and the second clamp ring 8 close to the ball valve 10. The ball groove 22 corresponds to the position of the ball valve 10 and is matched in size to ensure a tight and reliable connection between the first clamp ring 6, the second clamp ring 8 and the ball valve 10 to prevent gas leakage.

[0022] A first stopper 26 and a second stopper 27 are symmetrically fixedly provided on the outside of the shaft hole 15 at the upper end of the first housing 13. A baffle 28 is fixedly provided on the shaft 18 between the upper end of the first housing 13 and the handle 19. The positions of the first stopper 26, the second stopper 27 and the baffle 28 correspond to each other, so as to limit the rotation angle of the ball valve 10. When the shaft 18 is rotated so that the baffle 28 and the first stopper 26 are abutted together, the ball valve 10 opens. When the shaft 18 is rotated so that the baffle 28 and the second stopper 27 are abutted together, the ball valve 10 closes.

[0023] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. A safety gas shut-off valve, comprising a first shell and a second shell of identical size and structure, wherein the outer walls of the first shell and the second shell are connected by a plurality of first bolts, and a through groove is formed through the center of the cross section of the first shell and the second shell, characterized in that: The first housing and the second housing are both provided with a first card groove, a first card ring is provided at the first card groove, the first card ring is tightly against the inner walls of the first housing and the second housing, a second card groove is provided at the openings of the ends of the first housing and the second housing, a second card ring is provided at the second card groove, the second card ring is tightly against the inner walls of the first housing and the second housing at the same time, a slide groove is provided on the inner walls of the first housing and the second housing, the outer diameter of the first card ring is smaller than the outer diameter of the second card ring, a ball valve is provided between the first card ring and the second card ring, a first through hole is provided in the middle position of the ball valve, the ball valve is against the first card ring, the second card ring and the inner walls of the first housing and the second housing at the slide groove, A second through hole is provided on the side walls of the first shell and the second shell, a first shell with an opening facing the second shell is fixedly provided on the outer wall of the first shell, and a second shell with an opening facing the first shell is fixedly provided on the outer wall of the second shell, the first shell and the second shell have the same size and structure and can be docked together at the openings, an axial hole is provided on the side walls of the first shell and the second shell, the axial hole corresponds to the position of the second through hole and has the same aperture, a first gear is provided in the first shell, and a second gear is provided in the second shell, the first gear and the second gear have the same diameter and the same number of teeth, the first gear and the second gear are meshed together, and shafts are symmetrically fixed at the middle position of both ends of the first gear and the second gear, one end of the shaft passes through the second through hole and is connected to the ball valve, the other end of the shaft passes through the shaft hole, and a turning handle is fixed on one end of the shaft connected to the first gear.

2. A safety gas shut-off valve according to claim 1, characterized in that: The ball valve is provided with a rotation groove near the second through hole, and a rotation block is fixedly provided at one end of the shaft near the ball valve. The position of the rotation block corresponds to the rotation groove and the size is the same as that of the rotation block, and the rotation block is arranged in the rotation groove.

3. A safety gas shut-off valve according to claim 1, characterized in that: A ball groove is formed on one side of the first clamping ring and the second clamping ring close to the ball valve. The ball groove corresponds to the position of the ball valve and is matched in size.

4. A safety gas shut-off valve according to claim 1, characterized in that: An annular groove is provided at the middle position of the outer wall of the first clamping ring and the second clamping ring, and a sealing ring is provided in the annular groove.

5. A safety gas shut-off valve according to claim 1, characterized in that: A first stopper and a second stopper are symmetrically fixedly provided on the outside of the shaft hole at the upper end of the first shell, and a baffle is fixedly provided on the shaft between the upper end of the first shell and the handle. The positions of the first stopper, the second stopper and the baffle correspond to each other.

6. A safety gas shut-off valve according to claim 1, characterized in that: The first shell and the second shell are connected by a plurality of second bolts.

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