CN211259800U

CN211259800U - Large-flow stop valve

Info

Publication number: CN211259800U
Application number: CN201922003184.8U
Authority: CN
Inventors: 杨刚林; 胡志鹏; 孔海波
Original assignee: Leshan Hengli Valve Co ltd
Current assignee: Leshan Hengli Valve Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-08-14
Anticipated expiration: 2029-11-19

Abstract

The utility model provides a high-flow stop valve through improvement, which comprises a valve body, an upper cover, a control component, a spring and a valve core; the valve cavity is formed in the valve body, the upper cover is positioned on the upper part of the valve body, and the control assembly controls the valve core to realize opening and closing actions; the fluid outlet end of the valve body is provided with a pressure relief opening, and the outlet end can be subjected to pressure relief operation when necessary. Additionally, the utility model discloses it has the corrosion-resistant inner wall of alloy to embed respectively in the inner chamber that valve body self has fluid to advance, go out the port, satisfies special liquid medium's transmission.

Description

Large-flow stop valve

Technical Field

The utility model relates to a valve field, particularly a large-traffic stop valve.

Background

The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur. The connection mode is divided into three types: flange connection, screw thread connection and welding connection. After the self-sealing valve appears, the medium flow direction of the stop valve is changed to enter the valve cavity from the upper part of the valve clack, at this time, under the action of medium pressure, the force for closing the valve is small, the force for opening the valve is large, and the diameter of the valve rod can be correspondingly reduced. At the same time, this type of valve is also relatively tight under the action of the medium. The valve of China has been specified in the 'three-transformation and three-transformation' way, and the flow direction of the stop valve is uniformly from top to bottom. When the stop valve is opened, the opening height of the valve clack is 25% -30% of the nominal diameter, the flow reaches the maximum, and the valve reaches the full-open position. Therefore, the fully open position of the shut-off valve is determined by the stroke of the valve clack. The opening and closing part of the stop valve is a plug-shaped valve clack, the upper surface of the seal is a plane or a sea cone surface, and the valve clack moves linearly along the central line of the valve seat. The movement form of the valve rod, also a lifting rotating rod type, can be used for controlling the flow of various types of fluid such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. Therefore, this type of shut-off valve is very suitable for shut-off or regulation and throttling. The valve rod of the valve has relatively short opening or closing stroke and reliable cut-off function, and the valve is suitable for regulating flow rate owing to the proportional relation between the valve seat port change and the valve clack stroke.

For a stop valve product, the flow limiting and flow blocking capabilities of an inlet end when the flow is overlarge, the pressure relief capability of an outlet end when the pressure is overlarge and the corrosion resistance capability of an inner cavity are lacked.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to solve the above-mentioned deficiency, the utility model provides a large-flow stop valve; compared with the prior products of the same type, the utility model has the advantages that the valve body is provided with the fluid inlet and outlet ports, the fluid spacer block is arranged inside the valve body, and the fluid spacer block can play the roles of current limiting and flow choking when the medium flows from the left end to the right end; the fluid outlet end of the valve body is provided with a pressure relief opening, and the outlet end can be subjected to pressure relief operation when necessary.

The utility model is realized in such a way, a large-flow stop valve is constructed, which comprises a valve body, an upper cover, a control component, a spring and a valve core; the inside of valve body forms the valve pocket, and the upper cover is located valve body upper portion, and the action is opened and close, its characterized in that is realized to control assembly control case: the valve body is provided with a fluid inlet port and a fluid outlet port, a fluid spacer block is arranged inside the valve body, and a pressure relief port is arranged at the fluid outlet end of the valve body.

According to the utility model relates to a large-traffic stop valve, its characterized in that: the corrosion-resistant inner wall of alloy is embedded in the inner cavity of the valve body, which is provided with the fluid inlet and outlet ports.

The utility model has the advantages of as follows: the utility model provides a high-flow stop valve through improvement, which comprises a valve body, an upper cover, a control component, a spring and a valve core; the valve cavity is formed in the valve body, the upper cover is positioned on the upper part of the valve body, and the control assembly controls the valve core to realize opening and closing actions; the fluid outlet end of the valve body is provided with a pressure relief opening, and the outlet end can be subjected to pressure relief operation when necessary.

Additionally, the utility model discloses it has the corrosion-resistant inner wall of alloy to embed respectively in the inner chamber that valve body self has fluid to advance, go out the port, satisfies special liquid medium's transmission.

Drawings

FIG. 1 is an external schematic view of the present invention;

fig. 2 is a schematic diagram of the internal structure of the product of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings 1-2, wherein the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a high-flow stop valve through improvement, which comprises a valve body 1, an upper cover 2, a control component 3, a spring 4 and a valve core 5; the inside of the valve body 1 forms the valve pocket, the upper cover 2 locates at the upper portion of the valve body 1, the control assembly 3 controls the valve core 5 to realize the opening and closing movements, compared with the existing products of the same type, the valve body 1 has fluid inlet and outlet ports, the inside of the valve body 1 has fluid spacer blocks 6, when the medium flows from left to right end, the fluid spacer blocks 6 can play the role of current limiting and choked flow; the fluid outlet end of the valve body 1 is provided with a pressure relief opening 7, and the outlet end can be subjected to pressure relief operation if necessary.

Additionally, the utility model discloses it has the corrosion-resistant inner wall of alloy to embed respectively in the inner chamber that valve body 1 self has fluid to advance, go out the port, satisfies special liquid medium's transmission.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-flow stop valve comprises a valve body (1), an upper cover (2), a control assembly (3), a spring (4) and a valve core (5); the inside of valve body (1) forms the valve pocket, and upper cover (2) are located valve body (1) upper portion, and control assembly (3) control valve core (5) realize opening and close the action, its characterized in that: the valve body (1) is provided with a fluid inlet port and a fluid outlet port, a fluid spacer block (6) is arranged inside the valve body (1), and a pressure relief port (7) is arranged at the fluid outlet end of the valve body (1).

2. A high flow stop valve according to claim 1, characterized in that: alloy corrosion-resistant inner walls are respectively embedded in inner cavities of the valve body (1) with the fluid inlet and outlet ports.