Stop valve

Abstract

The stop valve comprises a valve sleeve, a valve disc, a positioning block, an end cover, a spring washer, a valve rod, an indicating cover and a hand wheel, the valve sleeve is installed in a valve body, the positioning block is arranged at the upper end of the valve sleeve, the valve disc is connected into the valve sleeve in a matched mode, a shaft of the valve disc penetrates through the positioning block to be connected with the valve rod, the indicating cover is fixedly connected to the upper portion of the valve rod, and the hand wheel is connected to the upper end of the valve rod; the end cover is fixedly connected to the valve body. The stop valve serves as an inflatable high-precision pressure reduction assembly, is used for a multifunctional plug-in mounting type high-pressure air pressure reduction module, and is mounted at the rear end of a high-pressure air system for pressure reduction. Different flow ratios are obtained by controlling and opening different stop valves in the inflatable high-precision pressure reduction assembly and supplied to multiple users at the rear end for use.

Description

Technical Field

[0001] The invention relates to a stop valve assembly device, in particular to a stop valve. Background Art

[0002] As a common valve widely used in various industries, the stop valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. The commonly used electric stop valve is composed of two parts: an electric actuator and a stop valve. The pipeline is opened and closed by moving the valve core in the valve body. Since the electric stop valve needs to withstand a large internal pressure during operation without leakage, the existing conventional electric stop valves have leakage due to the lack of pressure-resistant devices and sealing performance. In particular, the electrical part of the electric stop valve cannot work normally underwater. It usually needs to be installed in a waterless environment or immersed in oil to work normally, which increases the cost and is troublesome to operate. Summary of the invention

[0003] The present invention is to provide a stop valve, which is used as an inflatable high-precision pressure reducing component for a multifunctional plug-in high-pressure air pressure reducing module, and is installed at the rear end of a high-pressure air system for pressure reducing. By controlling the opening of different stop valves, different flow ratios can be obtained to supply multiple users at the rear end.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a stop valve, including a valve sleeve, a valve disc, a positioning block, an end cover, a spring washer, a valve stem, an indicator cover, and a handwheel. The valve sleeve is installed in the valve body, a positioning block is provided at the upper end of the valve sleeve, a valve sleeve is matched and connected with the valve sleeve, the axis of the valve disc passes through the positioning block and is connected to the valve stem, the upper part of the valve stem is fixedly connected to the indicator cover, and the upper end of the valve stem is connected to the handwheel; the end cover is fixedly connected to the valve body.

[0005] Furthermore, the valve stem is threadedly connected to the end cover.

[0006] Furthermore, the end cover is fixedly connected to the valve body by means of screws and spring washers.

[0007] Furthermore, the valve sleeve and the valve body, and the positioning block and the valve body are statically sealed via O-rings.

[0008] Furthermore, the shaft of the valve disc is dynamically sealed to the positioning block via an O-ring.

[0009] Furthermore, the stop valve is used as an inflatable high-precision pressure reducing component, for a multifunctional plug-in high-pressure air pressure reducing module, which is installed at the rear end of the high-pressure air system for pressure reduction. Different flow ratios can be obtained by controlling the opening of different stop valves in the inflatable high-precision pressure reducing component to supply multiple users at the rear end.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The stop valve of the present invention is used as an inflatable high-precision pressure reducing component for a multifunctional plug-in high-pressure air pressure reducing module, which is installed at the rear end of a high-pressure air system for pressure reducing. By controlling the opening of different stop valves in the inflatable high-precision pressure reducing component, different flow ratios can be obtained to supply multiple users at the rear end. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the stop valve of the present invention;

[0013] In the figure: 1. valve sleeve, 2. O-ring A, 3. valve disc, 4. O-ring B, 5. positioning block, 6. end cover, 7. spring washer, 8. screw, 9. valve stem, 10. indicator cover, 11. nut, 12. handwheel. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0016] like Figure 1 As shown, a stop valve of the present invention comprises a valve sleeve 1, an O-ring A2, a valve disc 3, an O-ring B4, a positioning block 5, an end cover 6, a spring washer 7, a screw 8, a valve stem 9, an indicator cover 10, a nut 11, and a hand wheel 12.

[0017] The valve sleeve 1 is installed in the valve body, and a positioning block 5 is provided at the upper end of the valve sleeve 1. A valve disc 3 is connected in the valve sleeve 1. The axis of the valve disc 3 passes through the positioning block 5 and is connected to the valve stem 9. The valve stem 9 is threadedly connected to the end cover 6. The upper end of the valve stem 9 is connected to the hand wheel 12.

[0018] Preferably, the upper portion of the valve stem 9 is connected to the indicating cover 10 via a nut 11 .

[0019] Preferably, the end cover 6 is fixedly connected to the valve body by means of screws 8 and spring washers 7 .

[0020] Preferably, the valve sleeve 1 and the valve body are statically sealed via an O-ring A2.

[0021] Preferably, the positioning block 5 and the valve body are statically sealed via an O-ring A2.

[0022] Preferably, the shaft of the valve disc 3 and the positioning block 5 are dynamically sealed via an O-ring B4.

[0023] Preferably, the stop valve is provided with a valve sleeve, a valve disc, a positioning block, an end cover, a spring washer, a valve stem, an indicator cover, and a hand wheel as an inflatable high-precision pressure reducing component, which is used for a multifunctional plug-in high-pressure air pressure reducing module and installed at the rear end of a high-pressure air system for pressure reducing. By controlling the opening of different stop valves in the inflatable high-precision pressure reducing component, different flow ratios can be obtained to supply multiple users at the rear end.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A stop valve, characterized in that: It includes a valve sleeve, a valve disc, a positioning block, an end cover, a spring washer, a valve stem, an indicator cover and a handwheel. The valve sleeve is installed in the valve body. A positioning block is provided at the upper end of the valve sleeve. The valve sleeve is connected with the valve disc. The axis of the valve disc passes through the positioning block and is connected to the valve stem. The upper part of the valve stem is fixedly connected to the indicator cover, and the upper end of the valve stem is connected to the handwheel; the end cover is fixedly connected to the valve body.

2. The stop valve according to claim 1, characterized in that: The valve stem and the end cover are threadedly connected.

3. The stop valve according to claim 1, characterized in that: The end cover is fixedly connected to the valve body by screws and spring washers.

4. The stop valve according to claim 1, characterized in that: The valve sleeve and the valve body, as well as the positioning block and the valve body are statically sealed by O-rings.

5. The stop valve according to claim 1, characterized in that: The shaft of the valve disc and the positioning block are connected by an O-ring dynamic seal.

6. The stop valve according to any one of claims 1 to 5, characterized in that: The stop valve is used as an inflatable high-precision pressure reducing component for a multifunctional plug-in high-pressure air pressure reducing module. It is installed at the rear end of a high-pressure air system for pressure reduction. By controlling the opening of different stop valves in the inflatable high-precision pressure reducing component, different flow ratios can be obtained to supply multiple users at the rear end.

Images