Gas pipeline stop valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a gas pipeline stop valve which comprises a valve body, a first connector, a second connector and a first mounting end are arranged on the valve body, and a first sealing cover is connected to the first mounting end; the valve element assembly is arranged on the inner side of the valve body, and a locking piece is arranged on the valve element assembly; the lower end of the valve body is provided with a second installation end, and the locking piece is connected with the valve element assembly through the second installation end.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and particularly relates to a gas pipeline cut-off valve. Background Art

[0002] A cut-off valve, also called a stop valve, is one of the most widely used valves. It is popular because there is little friction between the sealing surfaces during the opening and closing process, it is relatively durable, the opening height is not large, it is easy to manufacture and maintain, and it is applicable not only to medium and low pressures but also to high pressures.

[0003] The handle of the existing gas cut-off valve is usually directly exposed to the outside, and it is very easy to be accidentally touched during operation, which affects the cut-off effect. Therefore, we have specially designed a gas pipeline cut-off valve. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a gas pipeline cut-off valve for the above-mentioned existing technical problems, achieving a good cut-off effect.

[0005] In view of this, the utility model provides a gas pipeline cut-off valve, including:

[0006] A valve body, on which a first interface, a second interface and a first installation end are provided, and a first sealing cover is connected to the first installation end;

[0007] A valve core assembly, which is arranged inside the valve body, and a locking member is arranged on the valve core assembly;

[0008] Wherein, a second installation end is arranged at the lower end of the valve body, and the locking member connects the valve core assembly through the second installation end.

[0009] In the above technical solution, further, the valve core assembly includes:

[0010] A ferrule, which is arranged inside the valve body;

[0011] A valve core body, which is arranged inside the ferrule and is close to the first interface;

[0012] A valve rod, which is connected to the valve core body from the first installation end and is connected with a handle.

[0013] In the above technical solution, further, the locking member includes:

[0014] A locking block;

[0015] A locking rod;

[0016] A second sealing cover, which is arranged on the second installation end, and a convex structure is concavely formed on the second sealing cover, the convex structure extends into the second installation end, and a threaded hole is arranged on the end face of the convex interface;

[0017] The third sealing cover is arranged on the second sealing cover, an activity cavity is formed between the second sealing cover and the convex structure, and a sliding hole is arranged on the end face of the third sealing cover;

[0018] Wherein, the locking part is arranged in the second installation end, and a locking cavity is correspondingly arranged at the bottom of the valve core;

[0019] Wherein, the locking rod sequentially penetrates through the third sealing cover and the second sealing cover to connect the locking block, and the locking rod is in threaded cooperation with the second sealing cover and in sliding cooperation with the third sealing cover.

[0020] In the above technical solution, further, it further includes:

[0021] A sliding sleeve is arranged on the sliding hole and fits on the locking rod.

[0022] In the above technical solution, further, it further includes:

[0023] An adhesive layer is arranged on the outer side of the locking block.

[0024] In the above technical solution, further, it further includes:

[0025] The first limiting protrusion is arranged in the valve body and abuts against the outer side of the ferrule.

[0026] In the above technical solution, further, it further includes:

[0027] The second limiting protrusion is arranged at the upper end of the valve body and limits the movement of the grip.

[0028] The beneficial effect of the present utility model is that the locking part can lock the valve core assembly, thereby preventing the valve from malfunctioning due to accidental touch. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of the present utility model;

[0030] Figure 2 is a schematic diagram of the ferrule of the present utility model;

[0031] The marks in the figure are shown as: 1. Valve body; 11. First interface; 12. Second interface; 13. First installation end; 14. Second installation end; 2. First sealing cover; 3. Valve core assembly; 31. Ferrule; 311. Flared groove; 312. Arc groove; 313. Matching hole; 32. Valve core body; 33. Valve rod; 4. Locking part; 41. Locking block; 42. Locking rod; 43. Second sealing cover; 431. Convex structure; 432. Threaded hole; 44. Third sealing cover; 441. Sliding hole; 5. Sliding sleeve; 6. Adhesive layer; 7. First limiting protrusion; 8. Second limiting protrusion. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present application.

[0033] Embodiment 1:

[0034] This embodiment provides a gas pipeline cut-off valve, including:

[0035] A valve body 1, on which a first interface 11, a second interface 12, and a first mounting end 13 are provided, and a first sealing cover 2 is connected to the first mounting end 13;

[0036] A valve core assembly 3, which is arranged inside the valve body 1, and a locking member 4 is arranged on the valve core assembly 3;

[0037] Among them, a second mounting end 14 is provided at the lower end of the valve body 1, and the locking member 4 is connected to the valve core assembly 3 by the second mounting end 14.

[0038] It can be seen from this embodiment that a gas pipeline cut-off valve includes a valve body 1 and a valve core assembly 3, and a locking member 4 is installed on the valve core assembly 3. During use, the locking member 4 can lock the valve core assembly 3, thereby preventing the valve from malfunctioning due to accidental touch;

[0039] The first interface 11, the second interface 12, the first mounting end 13, and the second mounting end 14 are integrally formed on the valve body 1. The valve core assembly 3 is installed into the valve body 1 through the first interface 11. The locking assembly is connected into the valve body 1 through the second mounting end 14 and cooperates with the valve core assembly 3. A first sealing cover 2 is connected to the second mounting end 14 to seal the valve body 1.

[0040] Embodiment 2:

[0041] This embodiment provides a first gas pipeline cut-off valve, which has the following technical features in addition to the technical solutions of the above embodiment.

[0042] The valve core assembly 3 includes:

[0043] A ferrule 31, which is arranged inside the valve body 1;

[0044] A valve core body 32, which is arranged inside the ferrule 31 and is close to the first interface 11;

[0045] A valve stem 33, which is connected to the valve core body 32 by the first mounting end 13 and is connected with a grip.

[0046] It can be seen from this embodiment that the valve core assembly 3 includes a ferrule 31, a valve core body 32 and a valve stem 33;

[0047] The ferrule 31 is a rubber sleeve, and one side of the ferrule 31 is provided with a flared groove 311. The flared groove 311 corresponds to the arc groove 312 of the valve stem 33. A mating hole 313 is provided on the other side of the ferrule 31 corresponding to the locking member 4. The valve core body 32 is installed into the ferrule 31 through the flared groove 311, and the valve stem 33 is connected to the valve core at the arc groove 312;

[0048] The valve core assembly 3 controls the flow of fluid through opening and closing, and at the same time, the ferrule 31 can tightly fit on the wall surface of the valve body 1, thus playing a sealing role.

[0049] Embodiment 3:

[0050] This embodiment provides the first gas pipeline cut-off valve. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0051] The locking member 4 includes:

[0052] A locking block 41;

[0053] A locking rod 42;

[0054] A second sealing cover 43, the second sealing cover 43 is arranged on the second installation end 14, and a convex structure 431 is concavely formed on the second sealing cover 43. The convex structure 431 extends into the second installation end 14, and a threaded hole 432 is arranged on the interface end surface of the convex 431;

[0055] A third sealing cover 44, the third sealing cover 44 is arranged on the second sealing cover 43, and a sliding hole 441 is arranged on the end surface of the third sealing cover 44;

[0056] Among them, the locking member is arranged in the second installation end 14, and a locking cavity is correspondingly arranged at the bottom of the valve core;

[0057] Among them, one end of the locking rod 42 is arranged on the outside, and the other end sequentially passes through the third sealing cover 44 and the second sealing cover 43 to connect the locking block 41, and the locking rod 42 is in threaded cooperation with the second sealing cover 43 and in sliding cooperation with the third sealing cover 44.

[0058] It can be seen from this embodiment that the locking member 4 includes a locking block 41, a locking rod 42, a second sealing cover 43 and a third sealing cover 44;

[0059] During use, the operator rotates one end of the locking rod 42 that extends outside the third sealing cover 44. As a result, a threaded fit is formed between the locking rod 42 and the threaded hole 432. The locking rod 42 pushes the locking block 41 upward from the mating hole 313 into the locking cavity at the bottom of the valve core to achieve locking. Alternatively, the locking rod 42 removes the locking hole in the locking cavity and then releases the valve core. The locking block 41 is a hexahedron, and the locking cavity is set corresponding to the shape of the locking member 4;

[0060] Furthermore, one end of the locking block 41 corresponding to the locking rod 42 is provided with a hole with a constricted opening. The locking rod 42 extends into the hole and is limited and fixed to the hole. The locking rod 42 can rotate within the hole, but it will not cause the locking block 41 to rotate. Moreover, the up-and-down movement of the locking block 41 is controlled by the limit with the constricted opening, thereby avoiding the influence of the limit between the locking block 41 and the locking rod 42 on the use;

[0061] During installation, the locking block 41, the locking rod 42, the second sealing cover 43, and the third sealing cover 44 are sequentially fitted and then connected to the second installation end 14. Then, the second installation end 14, the second sealing cover 43, and the third sealing cover 44 are welded and fixed together by a welding torch, thereby making the connection firm and simultaneously playing a sealing role.

[0062] Example 4:

[0063] This example provides the first gas pipeline cut-off valve. In addition to including the technical solutions of the above example, it also has the following technical features.

[0064] A sliding sleeve 5 is provided on the sliding hole 441 and fits on the locking rod 42.

[0065] It can be seen from this example that by providing the sliding sleeve 5 on the sliding hole 441 to cooperate with the locking rod 42, the gap between the locking rod 42 and the sliding hole 441 can be sealed.

[0066] Example 5:

[0067] This example provides the first gas pipeline cut-off valve. In addition to including the technical solutions of the above example, it also has the following technical features.

[0068] An adhesive layer 6 is provided on the outside of the locking block 41.

[0069] It can be seen from this example that by providing the adhesive layer, the mating surface between the locking block 41 and the valve core is in soft contact, thereby preventing the situation that the locking block 41 scratches the locking cavity and results in poor sealing effect.

[0070] Example 6:

[0071] This embodiment provides a first gas pipeline cut-off valve. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0072] The first limiting protrusion 7 is arranged inside the valve body 1 and abuts against the outer side of the ferrule 31.

[0073] It can be seen from this embodiment that by arranging the first limiting protrusion 7, the connection between the valve core assembly 3 and the valve body 1 is made firm.

[0074] Embodiment 7:

[0075] This embodiment provides a first gas pipeline cut-off valve. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0076] The second limiting protrusion 8 is arranged at the upper end of the valve body 1 and restricts the movement of the grip.

[0077] It can be seen from this embodiment that by arranging the second limiting protrusion 8 to restrict the movement of the grip, it helps to accurately control the valve rod 33 to adjust the valve core.

[0078] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A gas pipeline cut-off valve, characterized in that it comprises: A valve body (1), on which a first interface (11), a second interface (12) and a first mounting end (13) are provided, and a first sealing cover (2) is connected to the first mounting end (13); A valve core assembly (3), which is arranged inside the valve body (1), and a locking member (4) is provided on the valve core assembly (3); Wherein, a second mounting end (14) is provided at the lower end of the valve body (1), and the locking member (4) is connected to the valve core assembly (3) by the second mounting end (14).

2. The gas pipeline cut-off valve according to claim 1, characterized in that, The valve core assembly (3) includes: A ferrule (31), which is arranged inside the valve body (1); A valve core body (32), which is arranged inside the ferrule (31) and is close to the first interface (11); A valve stem (33), which is connected from the first mounting end (13) to the valve core body (32) and is connected with a handle.

3. The gas pipeline cut-off valve according to claim 2, characterized in that, The locking member (4) includes: A locking block (41); A locking rod (42); A second sealing cover (43), which is arranged on the second mounting end (14), and a convex structure (431) is recessed on the second sealing cover (43), the convex structure (431) extends into the second mounting end (14), and a threaded hole (432) is provided on the interface end face of the convex structure (431); A third sealing cover (44), which is arranged on the second sealing cover (43), an activity cavity is formed between the second sealing cover (43) and the convex structure (431), and a sliding hole (441) is provided on the end face of the third sealing cover (44); Wherein, the locking member (4) is arranged inside the second mounting end (14), and a locking cavity is correspondingly arranged at the bottom of the valve core; Wherein, the locking rod (42) sequentially passes through the third sealing cover (44) and the second sealing cover (43) to connect the locking block (41), and the locking rod (42) is in threaded cooperation with the second sealing cover (43) and in sliding cooperation with the third sealing cover (44).

4. The gas pipeline cut-off valve according to claim 3, characterized in that it further It includes: A sliding sleeve (5), which is arranged on the sliding hole (441) and fits on the locking rod (42).

5. A gas pipeline cut-off valve according to claim 4, characterized in that it further It includes: An adhesive layer (6), which is arranged outside the locking block (41).

6. The gas pipeline cut-off valve according to claim 5, characterized in that it further It includes: A first limiting protrusion (7), which is arranged inside the valve body (1) and abuts against the outside of the ferrule (31).

7. A gas pipeline cut-off valve according to claim 6, characterized in that it further It includes: A second limiting protrusion (8), which is arranged at the upper end of the valve body (1) and limits the movement of the handle.

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