Improved gas cylinder stop valve

Abstract

The utility model discloses an improved gas cylinder stop valve which comprises a rotating hand wheel and a connecting valve rod fixedly arranged at the lower end of the rotating hand wheel, the lower end of the connecting valve rod is connected with a pressing ring in an inserted mode and extends to the lower end of the pressing ring, the connecting valve rod is connected with a limiting supporting disc in an inserted mode, and the limiting supporting disc is located below the pressing ring. The connecting valve rod extends to the position below the limiting supporting disc, the end, away from the limiting supporting disc, of the connecting valve rod is fixedly connected with an upper valve clack, the outer side of the upper valve clack is fixedly connected with a sealing supporting disc, the lower end of the upper valve clack is fixedly connected with a two-way supporting bolt, and the lower end of the two-way supporting bolt is connected with a lower valve clack in a threaded screwing mode. The lower end of the lower valve clack is fixedly connected with a rotary limiting column; according to the utility model, the effect of moving the upper valve clack and the lower valve clack at the same time is achieved by rotating the rotating hand wheel and rotationally connecting the bidirectional supporting bolt, so that the sealing strength of the device during use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, in particular to an improved stop valve for a gas cylinder. Background Art

[0002] The stop valve, also known as the gate valve, is one of the most widely used valves. The reason why it is so popular is that the friction between the sealing surfaces during opening and closing is small, it is relatively durable, the opening height is not large, it is easy to manufacture and maintain, and it is suitable not only for medium and low pressure, but also for high pressure.

[0003] As one of the most important shut-off valves, it can provide a stable support effect when the gas cylinder is used for gas supply. However, the existing device can only be sealed by a single valve core when in use, which limits the sealing and support performance inside the device. It is impossible to achieve double-layer sealing through a single rotation, affecting the pressure resistance of the device when in use.

[0004] Therefore, we provide an improved gas cylinder shut-off valve. Utility Model Content

[0005] The purpose of the utility model is to provide an improved gas cylinder stop valve to achieve the effect of double-layer control through a single turn in order to solve the above-mentioned technical problems.

[0006] In view of this, the utility model provides an improved gas cylinder stop valve, comprising a rotating handwheel, and a connecting valve stem fixedly arranged at the lower end of the rotating handwheel, the lower end of the connecting valve stem being inserted with a pressing ring and extending to its lower end, the connecting valve stem being inserted with a limiting support disk, the limiting support disk being located below the pressing ring, the connecting valve stem extending to below the limiting support disk, the end of the connecting valve stem away from the limiting support disk being fixedly connected to an upper valve disc, the outer side of the upper valve disc being fixedly connected to a sealing support disc, the lower end of the upper valve disc being fixedly connected to a two-way support bolt, the lower end of the two-way support bolt being threadedly connected to a lower valve disc, and the lower end of the lower valve disc being fixedly connected to a rotation limiting column.

[0007] Preferably, the outer side of the rotation limiting column is fixedly connected to a limiting support block, there are at least two limiting support blocks, the lower end of the rotation limiting column is plugged with a support tube, and the limiting support block is plugged into the support tube.

[0008] Preferably, the connecting valve stem is threadedly connected to the valve body, a rotation support layer is provided on one side of the inner wall of the valve body, and the pressing ring is threadedly connected to the rotation support layer.

[0009] Preferably, a limiting block is provided below the limiting support disc, the limiting block is located below the rotation support layer, and the rotation support layer is fixedly provided on one side of the inner wall of the valve body.

[0010] Preferably, the inner wall of the valve body is provided with a support and limit plate and a limit auxiliary plate, respectively, and the sealing support plate is located below the support and limit plate and the limit auxiliary plate.

[0011] Preferably, a sealing gasket is fixedly connected to the lower end of the sealing support plate, and the sealing gasket is located between the sealing support plate and the support limiting plate and the limiting auxiliary plate.

[0012] Preferably, the lower valve disc is fixedly connected to the sealing gasket via the sealing support plate, and the sealing support plate is located below the support limit plate and the limit auxiliary plate.

[0013] Compared with the prior art, the present invention provides an improved gas cylinder stop valve with the following beneficial effects:

[0014] The utility model rotates the rotating hand wheel under the support of the connecting valve stem, so that the pressing ring and the upper valve disc on the outside of the connecting valve stem rotate at the same time, and then the upper half of the device is sealed and tightened by the limiting support plate for the pressing ring and the sealing support plate for the upper valve disc.

[0015] The utility model uses a two-way support bolt to thread the lower valve disc, so that when the upper valve disc drives the two-way support bolt to rotate, it can simultaneously drive the lower valve disc and the rotation limit column to rotate, thereby achieving the effect of moving the rotation limit column and the lower valve disc, so that the upper valve disc and the lower valve disc move and seal at the same time.

[0016] The utility model achieves the effect of simultaneously moving the upper valve flap and the lower valve flap by rotating the rotating hand wheel and the rotating connection of the bidirectional support bolt, thereby improving the sealing strength of the device when in use.

[0017] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall cross-sectional structure of an improved gas cylinder stop valve proposed in the utility model;

[0019] Figure 2 This is a schematic diagram of the rotation structure of an improved gas cylinder stop valve proposed in the utility model;

[0020] Figure 3 This is a schematic diagram of the bidirectional support bolt structure of an improved gas cylinder stop valve proposed in the utility model;

[0021] Figure 4The present invention provides a schematic structural diagram of the support method of an improved gas cylinder stop valve.

[0022] In the figure: 1. Turn the handwheel; 2. Connect the valve stem; 3. Press the ring; 4. Limit support plate; 5. Upper valve disc; 6. Sealing support plate; 7. Sealing gasket; 8. Two-way support bolt; 9. Lower valve disc; 10. Rotate the limit column; 11. Limit support block; 12. Support cylinder; 13. Valve body; 14. Rotate support layer; 15. Limit block; 16. Support limit plate; 17. Limit auxiliary plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0025] Example 1: An improved gas cylinder stop valve, such as Figures 1-4As shown, it includes a rotating handwheel 1 and a connecting valve stem 2 fixedly arranged at the lower end of the rotating handwheel 1, a pressing ring 3 is inserted at the lower end of the connecting valve stem 2 and extends to its lower end, the connecting valve stem 2 is inserted into a limited support disk 4, the limited support disk 4 is located below the pressing ring 3, the connecting valve stem 2 extends to the bottom of the limited support disk 4, the end of the connecting valve stem 2 away from the limited support disk 4 is fixedly connected to an upper valve disc 5, the outer side of the upper valve disc 5 is fixedly connected to a sealing support disk 6, the lower end of the upper valve disc 5 is fixedly connected to a two-way support bolt 8, the lower end of the two-way support bolt 8 is threadedly connected to a lower valve disc 9, and the lower end of the lower valve disc 9 is fixedly connected to a rotating limiting column 10. When the device is running, the rotating handwheel 1 is rotated under the support of the connecting valve stem 2, so that the pressing ring 3 on the outer side of the connecting valve stem 2 and the upper valve disc 5 are simultaneously moved. Rotate, and then through the limiting and sealing support of the pressing ring 3 by the limiting support plate 4, and the sealing support of the upper valve disc 5 by the sealing support plate 6, the effect of sealing and fastening the upper half of the device is achieved. At the same time, through the threaded connection of the two-way support bolt 8 to the lower valve disc 9, when the upper valve disc 5 drives the two-way support bolt 8 to rotate, it can simultaneously drive the lower valve disc 9 and the rotation limiting column 10 to rotate simultaneously, thereby achieving the position movement of the rotation limiting column 10 and the lower valve disc 9, so that the upper valve disc 5 and the lower valve disc 9 are moved and sealed at the same time, thereby achieving the effect of moving the upper valve disc 5 and the lower valve disc 9 at the same time by rotating the rotating handwheel 1 and the rotation connection of the two-way support bolt 8, thereby improving the sealing strength of the device when it is in use.

[0026] like Figures 1-4 As shown, the outer side of the rotation limit column 10 is fixedly connected to the limit support block 11, and there are at least two limit support blocks 11. The lower end of the rotation limit column 10 is plugged with a support tube 12, and the limit support block 11 and the support tube 12 are plugged in and supported and limited by the support tube 12 to the limit support block 11 and the rotation limit column 10, so as to ensure its stability and reliability when performing high-altitude movement under the effect of threaded connection.

[0027] like Figures 1-4 As shown, the connecting valve stem 2 is threadedly connected to the valve body 13, and a rotating support layer 14 is provided on one side of the inner wall of the valve body 13. The pressing ring 3 is threadedly connected to the rotating support layer 14, and a limiting block 15 is provided below the limiting support disk 4. The limiting block 15 is located below the rotating support layer 14, and the rotating support layer 14 is fixedly arranged on one side of the inner wall of the valve body 13. The rotation of the connecting valve stem 2 and the stability and sealing of the support are ensured by the threaded support of the rotating handwheel 1. At the same time, the threaded connection between the rotating support layer 14 and the pressing ring 3 and the limiting of the limiting support disk 4 by the limiting block 15 ensure the stability of the position when the pressing ring 3 is adjusted, as well as the stability of the overall sealing effect of the device.

[0028] Example 2: An improved gas cylinder stop valve, such as Figures 1-4 As shown, the inner wall of the valve body 13 is respectively provided with a support limit plate 16 and a limit auxiliary plate 17, and the sealing support plate 6 is located below the support limit plate 16 and the limit auxiliary plate 17. By supporting the limit plate 16 and the limit auxiliary plate 17 inside the valve body 13, it is ensured that the device can provide a stable support effect when sealing in multiple directions.

[0029] like Figures 1-4 As shown, a sealing gasket 7 is fixedly connected to the lower end of the sealing support disk 6, and the sealing gasket 7 is located between the sealing support disk 6 and the support limit plate 16 and the limit auxiliary plate 17. The lower valve flap 9 is fixedly connected to the sealing gasket 7 through the sealing support disk 6, and the sealing support disk 6 is located below the support limit plate 16 and the limit auxiliary plate 17. With the support of the sealing support disk 6 and the sealing gasket 7, the upper valve flap 5 and the lower valve flap 9 are guaranteed to squeeze and seal each other when pressing and moving the support limit plate 16 and the limit auxiliary plate 17, thereby ensuring stability and efficiency when performing upper and lower sealing and limiting simultaneously from the inside of the device.

[0030] Working principle: By rotating the rotating handwheel 1 under the support of the connecting valve stem 2, the pressing ring 3 and the upper valve disc 5 on the outside of the connecting valve stem 2 rotate at the same time, and then the upper half of the device is sealed and tightened by the limiting support plate 4 for the pressing ring 3 and the sealing support of the sealing support plate 6 for the upper valve disc 5. At the same time, by the threaded connection of the two-way support bolt 8 to the lower valve disc 9, the upper valve disc 5 drives the two-way support bolt 8 to rotate, which can simultaneously drive the lower valve disc 9 and the rotating limiting column 10 to rotate, thereby achieving the position movement of the rotating limiting column 10 and the lower valve disc 9, so that the upper valve disc 5 and the lower valve disc 9 are moved and sealed at the same time, thereby achieving the effect of moving the upper valve disc 5 and the lower valve disc 9 at the same time by rotating the rotating handwheel 1 and the rotating connection of the two-way support bolt 8, thereby improving the sealing strength of the device when it is in use.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An improved gas cylinder stop valve, comprising a rotating hand wheel (1), and a connecting valve stem (2) fixedly arranged at the lower end of the rotating hand wheel (1), characterized in that: The lower end of the connecting valve stem (2) is plugged with a pressing ring (3) and extends to its lower end, the connecting valve stem (2) is plugged with a limit support disk (4), the limit support disk (4) is located below the pressing ring (3), the connecting valve stem (2) extends to below the limit support disk (4), the end of the connecting valve stem (2) away from the limit support disk (4) is fixedly connected to an upper valve disc (5), the outer side of the upper valve disc (5) is fixedly connected to a sealing support disk (6), the lower end of the upper valve disc (5) is fixedly connected to a two-way support bolt (8), the lower end of the two-way support bolt (8) is threadedly connected to a lower valve disc (9), and the lower end of the lower valve disc (9) is fixedly connected to a rotating limit column (10).

2. The improved gas cylinder stop valve according to claim 1, characterized in that: The outer side of the rotation limiting column (10) is fixedly connected to a limiting support block (11), and there are at least two limiting support blocks (11). A support tube (12) is inserted into the lower end of the rotation limiting column (10), and the limiting support block (11) is inserted into the support tube (12).

3. The improved gas cylinder stop valve according to claim 1, characterized in that: The connecting valve stem (2) is threadedly connected to the valve body (13), a rotation support layer (14) is provided on one side of the inner wall of the valve body (13), and the pressing ring (3) is threadedly connected to the rotation support layer (14).

4. The improved gas cylinder stop valve according to claim 3, characterized in that: A limiting block (15) is provided below the limiting support disc (4), and the limiting block (15) is located below the rotating support layer (14). The rotating support layer (14) is fixedly provided on one side of the inner wall of the valve body (13).

5. The improved gas cylinder stop valve according to claim 3, characterized in that: The inner wall of the valve body (13) is provided with a support and limit plate (16) and a limit auxiliary plate (17), respectively. The sealing support disc (6) is located below the support and limit plate (16) and the limit auxiliary plate (17).

6. The improved gas cylinder stop valve according to claim 5, characterized in that: A sealing gasket (7) is fixedly connected to the lower end of the sealing support plate (6), and the sealing gasket (7) is located between the sealing support plate (6) and the support limit plate (16) and the limit auxiliary plate (17).

7. The improved gas cylinder stop valve according to claim 6, characterized in that: The lower valve disc (9) is fixedly connected to the sealing gasket (7) via the sealing support plate (6), and the sealing support plate (6) is located below the support limit plate (16) and the limit auxiliary plate (17).

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