Anti-static structure of gas valve

Abstract

The utility model belongs to the technical field of gas valves, and particularly relates to an anti-static structure of a gas valve, which comprises a valve body, a valve core, a valve seat, a valve rod and a handle used for driving the valve rod to rotate are mounted in the valve body, the valve body comprises a main body, an inlet section and an outlet section, the inlet section and the outlet section are positioned on two axial sides of the main body, and the outlet section comprises a connecting end and an insulating end. The insulating end is positioned between the connecting end and the main body; the outlet section of the valve body is arranged to be the connecting end and the insulating end, so that static electricity is prevented from being conducted to the gas outlet end through the insulating end, damage to gas equipment is avoided, and potential safety hazards are effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas valves, and in particular relates to an anti-static structure of a gas valve. Background Art

[0002] Gas valves are used to cut off, connect and regulate gas in pipelines, and have good control characteristics and closing and sealing performance. They are suitable for various gas medium pipelines such as city gas, liquefied petroleum gas, natural gas, oxygen, etc., and are key equipment to ensure the safety of gas use.

[0003] The valve body of a traditional gas valve is usually formed by casting a one-piece copper or stainless steel. Some are formed by connecting two parts to facilitate the assembly of the valve core. However, whether it is a one-piece valve body or a valve body formed by connecting two parts, it is cast with copper or stainless steel, etc., so that static electricity can be conducted between the two ends, that is, static electricity is conducted from the air inlet end to the air outlet end of the valve body, which can easily cause damage to gas equipment such as the gas meter at the air outlet end and there is a possibility of operators being electrocuted. It has a major safety hazard and needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to address the above-mentioned technical problems and provide an anti-static structure for a gas valve, which prevents static electricity from being transmitted to the gas outlet of the gas valve, avoids damage to gas equipment, and effectively reduces safety hazards.

[0005] In view of this, the utility model provides an anti-static structure of a gas valve, comprising:

[0006] The valve body is equipped with a valve core, a valve seat, a valve stem, and a handle for driving the valve stem to rotate;

[0007] The valve body includes a main body and an inlet section and an outlet section located on both sides of the main body in the axial direction, and the outlet section includes a connecting end and an insulating end, and the insulating end is located between the connecting end and the main body.

[0008] In the above technical solution, further:

[0009] The insulating end includes a first connecting portion connected to the connecting end and a second connecting portion connected to the main body;

[0010] The second connecting portion is a flange structure and is fixed to the main body by bolts.

[0011] In the above technical solution, further:

[0012] A limiting structure is provided between the connecting end and the insulating end, and is used to limit the axial offset and radial offset between the two.

[0013] In the above technical solution, further, the limiting structure includes:

[0014] a first annular protrusion located on the radial surface of the first connecting portion;

[0015] Wherein, a first annular groove adapted to the first annular protrusion is provided on the radial inner wall of the connecting end.

[0016] In the above technical solution, further, the limiting structure also includes:

[0017] A plurality of first limiting protrusions are provided and are arranged on the radial surface of the first connecting portion at equal intervals around the circumference;

[0018] There are multiple second limiting protrusions, which are arranged at equal intervals on the axial surface of the connecting end close to the insulating end;

[0019] A first limiting hole matched with the first limiting protrusion is provided on the radial inner wall of the connecting end, and a second limiting hole matched with the second limiting protrusion is provided on a side of the second connecting portion close to the connecting end.

[0020] In the above technical solution, further comprising:

[0021] a second annular protrusion, provided on an axial surface of the second connecting portion close to the main body;

[0022] A second annular groove for mounting the valve seat is formed on the axial surface of the second annular protrusion close to the main body, and annular reinforcement ribs are formed along both radial sides of the second annular groove.

[0023] In the above technical solution, further:

[0024] A third annular groove is formed on the radial surface of the second annular protrusion, and a first sealing ring is arranged in the third annular groove.

[0025] In the above technical solution, further:

[0026] A fourth annular groove is formed on the axial inner wall of the second annular groove, and a second sealing ring is provided in the fourth annular groove.

[0027] The beneficial effects of the utility model are:

[0028] 1. By setting the outlet section of the valve body into a connecting end and an insulating end, the insulating end can prevent static electricity from being transmitted to the gas outlet end, thereby avoiding damage to gas equipment and effectively reducing safety hazards.

[0029] 2. The flange structure is adopted and fixed by bolts, which improves the convenience of connection between the outlet section and the main body.

[0030] 3. The connection strength and stability between the first connecting part and the second connecting part are ensured by setting the limiting structure.

[0031] 4. Through the setting of the first sealing ring and the second sealing ring, the sealing performance is effectively improved to prevent leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of the utility model;

[0033] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0034] Figure 3 It is an exploded view of the utility model;

[0035] The marks in the figure are as follows: 1. valve body; 2. valve core; 3. valve seat; 4. valve stem; 5. handle; 6. inlet section; 7. outlet section; 70. connecting end; 71. insulating end; 710. first connecting part; 711. second connecting part; 72. limiting structure; 720. first annular protrusion; 721. first annular groove; 722. first limiting protrusion; 723. second limiting protrusion; 724. first limiting hole; 725. second limiting hole; 726. second annular protrusion; 727. second annular groove; 728. annular reinforcement rib; 8. third annular groove; 9. first sealing ring; 10. fourth annular groove; 11. second sealing ring. DETAILED DESCRIPTION

[0036] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0037] Example 1:

[0038] This embodiment provides an anti-static structure for a gas valve, including:

[0039] The valve body 1 is equipped with a valve core 2, a valve seat 3, a valve stem 4 and a handle 5 for driving the valve stem 4 to rotate;

[0040] The valve body 1 includes a main body and an inlet section 6 and an outlet section 7 located on both sides of the main body in the axial direction. The outlet section 7 includes a connecting end 70 and an insulating end 71, and the insulating end 71 is located between the connecting end 70 and the main body.

[0041] At the same time, an integrated structure is adopted between the main body and the inlet end, and the main body, the inlet end and the connecting end 70 are all made of the material of the traditional valve body 1, such as copper, stainless steel, etc., which are not limited here, and the insulating end 71 can be made of plastic material and directly injection molded on the connecting end 70.

[0042] It can be seen from this embodiment that by configuring the outlet section 7 of the valve body 1 to be a connecting end 70 and an insulating end 71, the insulating end 71 prevents static electricity from being conducted to the gas outlet, thereby avoiding damage to the gas equipment and effectively reducing safety hazards.

[0043] Furthermore, the insulating end 71 is directly injection-molded on the connecting end 70 , thereby ensuring the connection strength between the connecting end 70 and the insulating end 71 and the convenience of production.

[0044] Example 2:

[0045] This embodiment provides an anti-static structure for a gas valve. In addition to the technical solutions of the above embodiments, it also has the following technical features:

[0046] The insulating end 71 includes a first connecting portion 710 connected to the connecting end 70 and a second connecting portion 711 connected to the main body;

[0047] The second connecting portion 711 is a flange structure and is fixed to the main body by bolts;

[0048] At the same time, the first connecting portion 710 and the second connecting portion 711 adopt an integrated structure, and the bolts are embedded.

[0049] It can be seen from this embodiment that by adopting a flange structure for the second connecting portion 711 and connecting and fixing it with bolts, the convenience of connecting the outlet section 7 and the main body is improved;

[0050] In addition, the bolts are embedded to improve the aesthetics of the connection after installation.

[0051] Example 3:

[0052] This embodiment provides an anti-static structure for a gas valve. In addition to the technical solutions of the above embodiments, it also has the following technical features:

[0053] A limiting structure 72 is provided between the connecting end 70 and the insulating end 71 to limit axial and radial offsets between the two ends.

[0054] It can be seen from this embodiment that the connection strength and stability between the first connection portion 710 and the second connection portion 711 are ensured by the provision of the limiting structure 72 .

[0055] Example 4:

[0056] This embodiment provides an anti-static structure for a gas valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. The limiting structure 72 includes:

[0057] A first annular protrusion 720 is located on the radial surface of the first connecting portion 710;

[0058] A first annular groove 721 adapted to the first annular protrusion 720 is formed on the radial inner wall of the connecting end 70;

[0059] Meanwhile, the first annular protrusion 720 and the first connecting portion 710 are of an integrated structure and are formed by injection molding to fit the first annular groove 721 .

[0060] It can be seen from this embodiment that the provision of the first annular protrusion 720 and the first annular groove 721 can improve the connection strength between the connecting end 70 and the first connecting portion 710, prevent the connecting end 70 from being offset along the axial direction of the first connecting portion 710, and improve stability;

[0061] Furthermore, it is formed by injection molding to fit the first annular groove 721 , thereby reducing the gap between the first annular protrusion 720 and the first annular groove 721 , and can further improve the connection strength between the connecting end 70 and the first connecting portion 710 .

[0062] Example 5:

[0063] This embodiment provides an anti-static structure for a gas valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. The limiting structure 72 also includes:

[0064] A plurality of first limiting protrusions 722 are provided and are circumferentially and evenly spaced on the radial surface of the first connecting portion 710;

[0065] There are multiple second limiting protrusions 723, which are arranged at equal intervals on the axial surface of the connecting end 70 near the insulating end 71;

[0066] A first limiting hole 724 is formed on the radial inner wall of the connecting end 70 and matches the first limiting protrusion 722 . A second limiting hole 725 is formed on a side of the second connecting portion 711 close to the connecting end 70 and matches the second limiting protrusion 723 .

[0067] At the same time, an integrated structure is adopted between the first limiting protrusion 722 and the first connecting portion 710 and between the second limiting protrusion 723 and the insulating end 71, and eight of them are used in this application, and the first limiting protrusion 722 and the second limiting protrusion 723 are alternately arranged along the circumference.

[0068] It can be seen from this embodiment that the cooperation between the first limiting protrusion 722 and the first limiting hole 724 and the cooperation between the second limiting protrusion 723 and the second limiting hole 725 can effectively prevent the connection end 70 from being offset along the radial direction of the insulating end 71, thereby improving stability.

[0069] In addition, the first limiting protrusion 722 and the second limiting protrusion 723 are alternately arranged along the circumference, and the two are respectively arranged on the first connecting portion 710 and the insulating end 71, so that there is also a radial limiting effect between the first limiting protrusion 722 and the second limiting protrusion 723, further improving stability and preventing the connecting end 70 from being offset radially along the insulating end 71.

[0070] Example 6:

[0071] This embodiment provides an anti-static structure for a gas valve. In addition to the technical solutions of the above embodiments, it also has the following technical features:

[0072] A second annular protrusion 726 is provided on the axial surface of the second connecting portion 711 close to the main body;

[0073] The axial surface of the second annular protrusion 726 close to the main body is provided with a second annular groove 727 for mounting the valve seat 3, and the second annular groove 727 is formed with annular reinforcement ribs 728 along both radial sides.

[0074] At the same time, the annular reinforcement rib 728 and the second annular protrusion 726 adopt an integrated structure.

[0075] It can be seen from this embodiment that the installation stability of the valve seat 3 is improved by the opening of the second annular groove 727, and due to the opening of the second annular groove 727, annular reinforcement ribs 728 are formed on both sides, thereby effectively improving the structural strength of the second annular protrusion 726.

[0076] Example 7:

[0077] This embodiment provides an anti-static structure for a gas valve. In addition to the technical solutions of the above embodiments, it also has the following technical features:

[0078] A third annular groove 8 is formed on the radial surface of the second annular protrusion 726, and a first sealing ring 9 is disposed in the third annular groove 8;

[0079] The first sealing ring 9 can be made of rubber.

[0080] It can be seen from this embodiment that by opening the third annular groove 8 on the radial surface of the second annular protrusion 726 and arranging the first sealing ring 9 in the third annular groove 8, the sealing performance between the surface of the second annular protrusion 726 and the inner wall of the main body can be effectively improved, leakage can be prevented, and safety can be ensured.

[0081] Example 8:

[0082] This embodiment provides an anti-static structure for a gas valve. In addition to the technical solutions of the above embodiments, it also has the following technical features:

[0083] A fourth annular groove 10 is formed on the axial inner wall of the second annular groove 727, and a second sealing ring 11 is disposed in the fourth annular groove 10;

[0084] The second sealing ring 11 can be made of rubber.

[0085] It can be seen from this embodiment that by opening the fourth annular groove 10 on the axial inner wall of the second annular groove 727 and arranging the second sealing ring 11 in the fourth annular groove 10, the sealing performance between the valve seat 3 and the second annular protrusion 726 can be effectively improved, further preventing leakage and ensuring safety.

[0086] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An anti-static structure for a gas valve, characterized in that: include: A valve body (1) is provided with a valve core (2), a valve seat (3), a valve stem (4), and a handle (5) for driving the valve stem (4) to rotate; The valve body (1) comprises a main body and an inlet section (6) and an outlet section (7) located on both sides of the main body in the axial direction, and the outlet section (7) comprises a connecting end (70) and an insulating end (71), and the insulating end (71) is located between the connecting end (70) and the main body.

2. The anti-static structure of the gas valve according to claim 1, characterized in that: The insulating end (71) includes a first connecting portion (710) connected to the connecting end (70) and a second connecting portion (711) connected to the main body; The second connecting portion (711) is a flange structure and is fixed to the main body by bolts.

3. The anti-static structure of the gas valve according to claim 2, characterized in that: A limiting structure (72) is provided between the connecting end (70) and the insulating end (71) and is used to limit the axial offset and radial offset between the two.

4. The anti-static structure of the gas valve according to claim 3, characterized in that: The limiting structure (72) includes: a first annular protrusion (720) located on a radial surface of the first connecting portion (710); Wherein, a first annular groove (721) adapted to the first annular protrusion (720) is provided on the radial inner wall of the connecting end (70).

5. The anti-static structure of the gas valve according to claim 3, characterized in that: The limiting structure (72) further includes: A plurality of first limiting protrusions (722) are provided and are arranged at equal intervals on the radial surface of the first connecting portion (710); A plurality of second limiting protrusions (723) are provided and are arranged at equal circumferential intervals on the axial surface of the connecting end (70) close to the insulating end (71); A first limiting hole (724) adapted to the first limiting protrusion (722) is provided on the radial inner wall of the connecting end (70), and a second limiting hole (725) adapted to the second limiting protrusion (723) is provided on a side of the second connecting portion (711) close to the connecting end (70).

6. The anti-static structure of the gas valve according to claim 2, characterized in that: Also includes: a second annular protrusion (726) provided on an axial surface of the second connecting portion (711) close to the main body; A second annular groove (727) for mounting the valve seat (3) is provided on the axial surface of the second annular protrusion (726) close to the main body, and annular reinforcement ribs (728) are formed along radial sides of the second annular groove (727).

7. The anti-static structure of the gas valve according to claim 6, characterized in that: A third annular groove (8) is provided on the radial surface of the second annular protrusion (726), and a first sealing ring (9) is provided in the third annular groove (8).

8. The anti-static structure of the gas valve according to claim 6, characterized in that: A fourth annular groove (10) is provided on the axial inner wall of the second annular groove (727), and a second sealing ring (11) is provided in the fourth annular groove (10).

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