CN212055906U

CN212055906U - High-pressure gate valve convenient to open

Info

Publication number: CN212055906U
Application number: CN202020270137.XU
Authority: CN
Inventors: 王宝增; 张世昌
Original assignee: Lande Weiye Technology Group Co ltd
Current assignee: Lande Weiye Technology Group Co ltd
Priority date: 2020-03-07
Filing date: 2020-03-07
Publication date: 2020-12-01
Anticipated expiration: 2030-03-07

Abstract

The utility model discloses a high-pressure gate valve convenient to open, which comprises a sealing block, an auxiliary valve ring, a main valve ring, a sealing gland, a sealing ring, a valve head, an auxiliary valve rod, a main valve rod, a gate plate, a sealing gasket, an end cap, a high-strength spring, a valve body and a communicating hole; through establish end cap, high strength spring and the intercommunicating pore of taking sealed pad and locating hole in the inside cavity of flashboard to carry on spacingly through vice valve rod to the end cap, the valve is when opening, and the vice valve rod that preferentially promotes easily to remove is relieved spacingly, makes the valve when opening, and the fluid pressure difference can reduce fast around the valve, and the flashboard of being convenient for shifts up and opens valve wholly. The utility model discloses a simple structure, it is easy and simple to handle, can effectively reduce the degree of difficulty of opening the high-pressure slide valve, the range of application is extensive.

Description

High-pressure gate valve convenient to open

Technical Field

The utility model relates to a slide valve field, especially a high-pressure slide valve convenient to open.

Background

The gate valve is a commonly used block valve, widely used in industry, and its basic principle is to control the flow of fluid by lifting the gate in the valve body, and the moving direction of the gate is perpendicular to the fluid when opening and closing, and it has the characteristics of small fluid resistance, simple installation, etc. However, due to the structural characteristics of the gate plate, when the gate plate is closed, the gate plate bears huge vertical pressure from fluid, so that the valve used under the high-pressure condition is often difficult to open, a balance pipe needs to be arranged in front of and behind the valve body for the traditional gate plate valve to facilitate opening and closing, the operation is complex, the installation is complex, and the sealing surface is easily scratched when the valve is forcibly opened under the high-pressure condition.

SUMMERY OF THE UTILITY MODEL

For solving the deficiency of the prior art condition, the utility model provides a high-pressure gate valve convenient to open.

The utility model relates to a high-pressure gate valve convenient to open, including sealed piece, vice valve circle, main valve circle, sealing gland, sealing washer, valve head, vice valve rod, main valve pole, flashboard, sealed pad, end cap, high strength spring, valve body, intercommunicating pore, the valve body is "T" shape, including vertical direction pipeline and horizontal direction pipeline, is provided with the valve head above the valve body, sealing gland sets up above the valve head, main valve pole passes sealing gland and valve head upper portion respectively, vertically stretches into in the valve body along the axis, the flashboard sets up at the inside central authorities of valve body, links to each other with the main valve pole, vice valve rod sets up in the main valve pole, and vertically stretches into in the flashboard along the main valve pole, be provided with sealed pad, end cap, high strength spring, intercommunicating pore in the flashboard, the end cap is "T" shape, sets up in flashboard middle part cavity, and the direction is perpendicular, the sealing gasket is arranged at the front end of a T-shaped surface at the head of the plug, the high-strength spring is arranged at the tail of the plug, and the communicating hole is arranged below the plug and is used for communicating a cavity in the flashboard with a valve pipeline.

Preferably, the cross-sectional area of the gate plate in the vertical direction is equal to the cross-sectional area of the pipeline in the vertical direction of the valve body, and the cross-sectional area of the gate plate in the horizontal direction is larger than the cross-sectional area of the pipeline in the horizontal direction of the valve body.

Preferably, a sealing ring is arranged between the contact surfaces of the main valve rod and the valve head.

Preferably, the length of the secondary valve stem is greater than the length of the main valve stem.

Preferably, the top of the main valve rod is provided with a main valve ring, and the top of the auxiliary valve rod is provided with an auxiliary valve ring.

Preferably, a sealing block is arranged on the contact surface of the top of the main valve rod and the auxiliary valve rod.

Preferably, the plug is provided with a positioning hole for the auxiliary valve rod to extend into.

The utility model has the advantages that:

1. a movable structure consisting of a plug and a high-strength spring is introduced into the gate plate, and the opening of the movable structure is controlled by the auxiliary valve rod, so that pipelines on two sides of the gate plate are communicated when the valve is opened, the fluid pressure difference born by two sides of the gate plate is reduced, and the difficulty in opening the valve under the high-pressure bearing condition is reduced.

2. When the pressure-sensitive valve is used for a low-pressure fluid condition, the pressure of the movable structure is small, the whole valve is easy to open, and when the pressure-sensitive valve is used for a high-pressure fluid condition, the movable structure is influenced by high pressure to quickly react and balance the pressure difference between two sides, so that the application range is wide.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the valve in an open state;

in the figure, 1 sealing block, 2 auxiliary valve rings, 3 main valve rings, 4 sealing glands, 5 sealing rings, 6 valve heads, 7 auxiliary valve rods, 8 main valve rods, 9 flashboards, 10 sealing gaskets, 11 plugs, 12 high-strength springs, 13 valve bodies and 14 communication holes are arranged.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the present invention.

Example (b):

as shown in fig. 1, a valve head 6 is arranged above a valve body 13, a sealing gland 4 is arranged above the valve head 6, a main valve rod 8 passes through the upper parts of the sealing gland 4 and the valve head 6 respectively and vertically extends into the valve body 13 along a central axis, a gate plate 9 is arranged in the center of the interior of the valve body 13 and is connected with the main valve rod 8, a sealing gasket 10, a plug 11, a high-strength spring 12 and a communication hole 14 are arranged in the gate plate 9, the plug 11 is arranged in a cavity in the middle of the gate plate 9 and is vertical to the direction of the main valve rod 8, a positioning hole for the auxiliary valve rod 7 to extend into is arranged on the plug 11, the sealing gasket 10 is arranged at the front end of a T-shaped surface at the head of the plug 11, the high-strength spring 12 is arranged at the tail part of the plug 11, the communication hole 14 is arranged below the plug 11 and is used for communicating the pipeline between the cavity in the gate plate 9 and the valve, a sealing block 1 is arranged on the contact surface of the top of the main valve rod 8 and the auxiliary valve rod 7, a main valve ring 3 is arranged on the top of the main valve rod 8, and an auxiliary valve ring 2 is arranged on the top of the auxiliary valve rod 7.

When the utility model is in a closed state, the flashboard 9 is positioned at the bottom of the valve body 13, the high-strength spring 12 pushes the plug 11 to move to a sealing position, the sealing gasket 10 at the front end of the plug 11 forms a seal with the flashboard 9 and extends into the positioning hole in the plug 11 through the auxiliary valve rod 7, so that the flashboard 9 can still keep a sealing state under the condition that the front end bears the pressure of high-pressure fluid;

when the valve needs to be opened, firstly, the auxiliary valve ring 2 is rotated to enable the auxiliary valve rod 7 to move out of the positioning hole, at the moment, the plug 11 is extruded by high-pressure fluid to contract towards the inside of the flashboard 9, the internal sealing of the flashboard 9 is released, a front pipeline and a rear pipeline of the flashboard 9 are communicated with a cavity in the flashboard 9 through the communication holes 14, the pipeline fluid at the front end of the valve enters a pipeline at the rear end of the valve, and the pressure difference between the front end and the rear end of the pipeline is;

as shown in fig. 2, the main valve ring 3 is then rotated to make the main valve rod 8 drive the gate plate 9 and its internal components, the auxiliary valve rod 7 and the auxiliary valve ring 2 to move up integrally, and at this time, the whole high-pressure gate valve is completely opened;

when the gate valve needs to be closed, the plug 11 is pushed by the high-strength spring 12 to be located at the sealing position, at the moment, the auxiliary valve ring 2 is rotated firstly, the auxiliary valve rod 7 is put down, the auxiliary valve rod enters the positioning hole, and the plug 11 is fixed on the sealing position;

then the main valve ring 3 is rotated to put down the flashboard 9, so that the flashboard 9 enters the sealing position of the valve body 13, and the plug 11 is limited by the auxiliary valve rod 7 and is pressed by high-pressure fluid to keep sealing, thereby playing a role in closing the gate valve.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the embodiments of the present invention are all covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A high-pressure gate valve convenient to open comprises a sealing block (1), an auxiliary valve ring (2), a main valve ring (3), a sealing gland (4), a sealing ring (5), a valve head (6), an auxiliary valve rod (7), a main valve rod (8), a gate plate (9), a sealing gasket (10), a plug (11), a high-strength spring (12), a valve body (13) and a communication hole (14), and is characterized in that the valve body (13) is inverted T-shaped and comprises a vertical pipeline and a horizontal pipeline, the valve head (6) is arranged above the valve body (13), the sealing gland (4) is arranged above the valve head (6), the main valve rod (8) penetrates through the upper parts of the sealing gland (4) and the valve head (6) respectively and vertically extends into the valve body (13) along the central axis, the gate plate (9) is arranged in the center inside the valve body (13) and is connected with the main valve rod (8), the secondary valve rod (7) is arranged in the main valve rod (8) and vertically extends into the flashboard (9) along the main valve rod (8).

2. A high-pressure gate valve convenient to open as claimed in claim 1, wherein: be provided with sealed pad (10), end cap (11), high strength spring (12), intercommunicating pore (14) in flashboard (9), end cap (11) are "T" shape, set up in flashboard (9) middle part cavity, and the direction is perpendicular with main valve rod (8) direction, sealed pad (10) set up in end cap (11) prelude T shape face front end, high strength spring (12) set up at end cap (11) afterbody, intercommunicating pore (14) set up in end cap (11) below, intercommunication flashboard (9) inside cavity and valve body (13) pipeline.

3. A high-pressure gate valve convenient to open as claimed in claim 1, wherein: the cross-sectional area of the vertical direction of the gate plate (9) is equal to the cross-sectional area of the pipeline of the vertical direction of the valve body (13), and the cross-sectional area of the horizontal direction of the gate plate (9) is larger than the cross-sectional area of the pipeline of the horizontal direction of the valve body (13).

4. A high-pressure gate valve convenient to open as claimed in claim 1, wherein: and a sealing ring (5) is arranged between the contact surfaces of the main valve rod (8) and the valve head (6).

5. A high-pressure gate valve convenient to open as claimed in claim 1, wherein: the length of the auxiliary valve rod (7) is greater than that of the main valve rod (8).

6. A high-pressure gate valve convenient to open as claimed in claim 1, wherein: the top of the main valve rod (8) is provided with a main valve ring (3), and the top of the auxiliary valve rod (7) is provided with an auxiliary valve ring (2).

7. A high-pressure gate valve convenient to open as claimed in claim 1, wherein: and a sealing block (1) is arranged on the contact surface of the top of the main valve rod (8) and the auxiliary valve rod (7).

8. A high-pressure gate valve convenient to open as claimed in claim 2, wherein: and the plug (11) is provided with a positioning hole for the auxiliary valve rod (7) to extend into.