CN217177473U

CN217177473U - Wedge gate valve bottom limit structure

Info

Publication number: CN217177473U
Application number: CN202220120708.0U
Authority: CN
Inventors: 韩泽海; 梁若莲
Original assignee: Dhv Valve & Foundry Suzhou Co ltd
Current assignee: Dhv Valve & Foundry Suzhou Co ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-08-12
Anticipated expiration: 2032-01-18

Abstract

The utility model relates to a wedge gate valve bottom limit structure, including the valve body that has the valve pocket, set up the disk seat in the valve pocket and sit the flashboard of establishing on the disk seat, the valve body bottom is sealed wears to be equipped with the setting element that a liftable was adjusted, works as when the flashboard cooperates with the disk seat is sealed, the upper end of setting element is supported with the lower extreme of flashboard and is leaned on. The bottom limiting structure of the wedge gate valve can effectively limit the closing position of the gate plate, avoid the pulling damage of a sealing surface caused by the non-placement operation and prolong the service life of the valve; the mechanical limiting structure is simple, the manufacturing cost is low, the valve closing position of the valve can be adjusted according to the abrasion of the sealing surface, and the operation is convenient.

Description

Wedge gate valve bottom limit structure

Technical Field

The utility model relates to a gate valve field, in particular to wedge gate valve bottom limit structure.

Background

The gate valve is a pipeline control device commonly used in industry, and the valve of the commonly used wedge gate valve is not mechanically limited when being closed, so long as the valve is closed and does not leak. This results in excessive closing of the valve during use, which can cause the sealing surface to be pulled and the valve to leak if the valve is improperly operated or the force is too great.

Therefore, a mechanical positioning structure is needed to be designed, and when the valve of the chamber is closed, the valve can not be closed continuously when reaching the corresponding position, so that the service life of the valve is prolonged.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: in order to overcome the defects of the prior art, the bottom limiting structure of the wedge gate valve is provided.

In order to achieve the above technical effect, the utility model discloses a technical scheme is: the utility model provides a wedge gate valve bottom limit structure, includes the valve body that has the valve pocket, sets up the disk seat in the valve pocket and sits the flashboard of establishing on the disk seat, the valve body bottom is sealed wears to be equipped with a setting element that liftable was adjusted, works as when flashboard and the sealed cooperation of disk seat, the upper end of setting element is supported with the lower extreme of flashboard and is leaned on.

Furthermore, the positioning piece is a positioning screw, and the positioning screw is in threaded connection with a locking nut fixed at the bottom of the valve body.

Further, an O-shaped ring is arranged between the positioning screw and the valve body.

Furthermore, the middle part of the positioning screw is provided with a ring groove, and the O-shaped ring is arranged in the ring groove.

Further, a sealing ring is arranged on the valve seat, and a sealing surface matched with the sealing ring is arranged on the flashboard.

Further, a corrosion-resistant layer is arranged on the inner wall of the valve body.

Further, the corrosion-resistant layer includes a fluorine-lined layer.

Furthermore, two ends of the valve body are provided with connecting flanges.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the closing position of the flashboard can be effectively limited, the sealing surface is prevented from being damaged due to pulling caused by non-operation, and the service life of the valve is prolonged;

2. the mechanical limiting structure is simple, the manufacturing cost is low, the valve closing position of the valve can be adjusted according to the abrasion of the sealing surface, and the operation is convenient.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is obvious that the described embodiments are some embodiments, not all embodiments of the present invention.

Drawings

FIG. 1 is a schematic structural diagram of a bottom limiting structure of a wedge gate valve;

FIG. 2 is a schematic view of a sealing structure between a positioning member and a valve body;

the reference numbers and corresponding designations in the drawings are: 1. the valve comprises a valve body, 11 parts of a connecting method, 2 parts of a valve seat, 3 parts of a flashboard, 4 parts of a positioning piece, 41 parts of a ring groove, 5 parts of a locking nut, 6 parts of an O-shaped ring, 7 parts of a sealing ring, 8 parts of a sealing surface and 9 parts of a corrosion-resistant layer.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Referring to fig. 1-2, the utility model provides a wedge gate valve bottom limit structure, including valve body 1 that has the valve pocket, set up disk seat 2 in the valve pocket and sit the flashboard 3 of establishing on disk seat 2, but the setting element 4 that is equipped with a lifting adjustment is worn to the sealing in valve body 1 bottom, and when flashboard 3 and disk seat 2 sealed cooperation, the upper end of setting element 4 supported with the lower extreme counterbalance of flashboard 3 and leaned on.

This embodiment is through increasing a setting element 4 in 1 bottom of valve body, and the position of fixed setting element 4 after adjusting valve closed position before dispatching from the factory can effectively restrict flashboard 3 closed position like this, avoids the sealed department of switch that the misoperation caused to strain increase of service life. After the valve is used for a period of time, if the abrasion exists between the flashboard 3 and the valve seat 2, the height of the positioning piece 4 is adjusted to be lowered.

The specific structure of the lifting adjustment of the positioning member 4 is as follows: the positioning piece 4 is a positioning screw which is in threaded connection with a locking nut 5 fixed at the bottom of the valve body 1. The height of the top end of the positioning screw can be conveniently adjusted through thread matching, the operation is simple, and the positioning screw is reliably fixed.

In order to ensure the sealing between the positioning piece 4 and the valve body 1, an O-shaped ring 6 is arranged between the positioning screw and the valve body 1 so as to avoid leakage points. Wherein, the middle part of the positioning screw is provided with a ring groove 41, and the O-shaped ring 6 is arranged in the ring groove 41.

The valve seat 2 is provided with a sealing ring 7, and the flashboard 3 is provided with a sealing surface 8 matched with the sealing ring 7.

In order to avoid medium corrosion on the valve under special working conditions, the inner wall of the valve body 1 is provided with a corrosion-resistant layer 9; preferably, the corrosion-resistant layer 9 comprises a fluorine-lined layer.

In order to facilitate the connection of the valve and the pipeline, the two ends of the valve body 1 are provided with connecting flanges 11.

The present invention is not limited to the above specific embodiments, and for those skilled in the art, the above conception can be used without any creative work, and all the changes made fall within the protection scope of the present invention.

Claims

1. The utility model provides a wedge gate valve bottom limit structure, includes valve body (1) that has the valve pocket, sets up disk seat (2) in the valve pocket and sits flashboard (3) of establishing on disk seat (2), its characterized in that, valve body (1) bottom seal wears to be equipped with a setting element (4) that liftable was adjusted, works as when flashboard (3) and disk seat (2) seal fit, the upper end of setting element (4) offsets with the lower extreme of flashboard (3) and leans on.

2. The wedge gate valve bottom limit structure of claim 1, wherein the positioning member (4) is a positioning screw, and the positioning screw is in threaded connection with a lock nut (5) fixed at the bottom of the valve body (1).

3. A wedge gate valve bottom limitation structure according to claim 2, characterized in that an O-ring (6) is arranged between the set screw and the valve body (1).

4. The wedge gate valve bottom restriction according to claim 3, wherein a ring groove (41) is formed in a middle portion of the set screw, and the O-ring (6) is disposed in the ring groove (41).

5. A wedge gate valve bottom stop structure according to claim 1, wherein a sealing ring (7) is provided on said valve seat (2), and a sealing surface (8) cooperating with said sealing ring (7) is provided on said gate plate (3).

6. A wedge gate valve bottom dead-end structure according to claim 1, wherein a corrosion resistant layer (9) is provided on the inner wall of the valve body (1).

7. Wedge gate valve bottom stop construction according to claim 6, characterized in that the corrosion resistant layer (9) comprises a fluorine lined layer.

8. A wedge gate valve bottom dead-end structure according to claim 1, wherein both ends of said valve body (1) are provided with a connecting flange (11).