CN219639443U

CN219639443U - Stop valve with double sealing structures

Info

Publication number: CN219639443U
Application number: CN202223585815.XU
Authority: CN
Inventors: 高永祥
Original assignee: Tianjin Hualida Valve Co ltd
Current assignee: Tianjin Hualida Valve Co ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-09-05
Anticipated expiration: 2032-12-31

Abstract

The utility model discloses a stop valve with a double-sealing structure, which comprises a valve body, a valve cover, a valve plate and a valve seat, wherein a guide sealing sleeve which is in sealing sliding connection with the side end face of the valve plate is arranged on the valve body at the outer side of the valve seat, a mounting groove is arranged below the inner side end of the valve seat, a second spring is arranged in the mounting groove, the upper end of the second spring is connected with the valve seat, the lower end of the second spring is connected with the bottom end face of the mounting groove, the edge of the lower side of the valve plate is a double-arc convex surface, a double-arc groove is arranged at the upper end of the valve seat, the double-arc convex surface is matched with the double-arc groove for use, and the double-arc convex surface is in sealing connection with the double-arc groove when the valve seat is closed. The utility model is provided with the double sealing structure, firstly, the guide sealing sleeve is used for sealing with the side end face of the valve plate, and secondly, the double arc convex surface is used for sealing with the double arc groove.

Description

Stop valve with double sealing structures

Technical Field

The utility model relates to the technical field of valve structures, in particular to a stop valve with a double-sealing structure.

Background

The stop valve applies pressure through rotating the valve rod, and the valve plate can completely seal off the valve seat outlet, so that fluid circulation is prevented; shut-off valves are commonly used in some corrosive gases, liquid pipelines such as natural gas, liquefied gas, sulfuric acid, etc.

The safety of a shut-off valve is an important property. In the traditional stop valve, the valve plate is covered on the valve seat for sealing, and the valve seat can be worn after long-time use, so that the problem of poor sealing performance is caused, and the use of the stop valve is seriously influenced.

Disclosure of Invention

Aiming at the technical problems in the prior art, the utility model aims at a stop valve with a double-sealing structure.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

the utility model provides a dual seal structure stop valve, includes valve body, valve gap, valve plate and disk seat, install on the valve body in the disk seat outside with the sealed sliding connection's of valve plate side face direction seal sleeve, the inboard end below of disk seat is provided with the mounting groove, be provided with the second spring in the mounting groove, the upper end and the disk seat of second spring are connected, and the lower extreme is connected with the bottom face of mounting groove, the valve plate downside edge is the double-arc convex surface, the disk seat upper end is provided with the double-arc recess, double-arc convex surface cooperatees with the double-arc recess and uses, and during the closure, double-arc convex surface and double-arc recess sealing connection.

The inner side end of the valve seat is provided with a sealing edge extending downwards.

The valve cover is characterized in that a sliding groove is formed in the lower end of the valve cover, two guide blocks are symmetrically arranged on the side wall of the sliding groove, the lifting block is in sliding connection with the two guide blocks, the upper end of the lifting block is connected with the lower end of the first spring, the upper end of the first spring is connected with the upper end face of the sliding groove, the upper end of the valve rod is connected with the lower end of the lifting block, and the lower end of the valve rod is connected with the upper end of the valve plate.

The notch of the sliding groove is provided with a limiting plate, and the limiting plate is provided with a through hole for communicating the sliding groove with the inside of the valve body.

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

the utility model has the advantages that the double sealing structure is arranged, firstly, the guide sealing sleeve is used for sealing with the side end face of the valve plate, secondly, the double arc convex surface and the double arc groove are used for sealing, in addition, the spring is arranged at the lower end of the valve seat, and the sealing effect is further improved by utilizing the elasticity of the spring.

Drawings

FIG. 1 is a schematic diagram of a structure provided in an embodiment of the present utility model;

FIG. 2 is a schematic view of the enlarged portion of FIG. 1;

in the figure, a valve cover 1, a lifting block 2, a valve body 3, a valve plate 4, a guide sealing sleeve 5, a valve seat 6, a valve rod 7, a guide block 8, a first spring 9, an amplifying part 10, a double-arc-shaped groove 101, a second spring 103 and a double-arc-shaped convex surface 104.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.

Referring to fig. 1-2, an embodiment of the present utility model is shown.

The embodiment provides a two seal structure stop valve, including valve body 3, valve gap 1, valve plate 4 and disk seat 6, longitudinally install on the valve body 3 in the disk seat 6 outside with the sealed sliding connection's of valve plate 4 side face direction seal sleeve 5, the inboard end below of disk seat 6 is provided with the mounting groove, be provided with second spring 103 in the mounting groove, the upper end and the disk seat 6 lower extreme of second spring 103 are connected, and the second spring 103 lower extreme is connected with the bottom face of mounting groove, and second spring 103 provides elasticity, disk plate 4 downside edge is double-arc convex surface 104, disk seat 6 upper end edge is provided with double-arc recess 101, double-arc convex surface 104 cooperatees with double-arc recess 101 and uses, and during the closure, double-arc convex surface and double-arc recess sealing connection.

The utility model provides a double-sealing structure, which is characterized in that a guide sealing sleeve is used for sealing with the side end surface of a valve plate, and a double-arc convex surface is used for sealing with a double-arc groove.

In addition, the inner side end of the valve seat 6 is provided with a sealing edge extending downwards, and the sealing effect is improved through the structure.

In addition, valve gap 1 lower extreme sets up the sliding tray, the symmetry is provided with two guide blocks 8 on the lateral wall of sliding tray, and lifting block 2 and two guide blocks 8 sliding connection, lifting block 2's upper end is connected with the lower extreme of first spring 9, and the upper end of first spring 9 is connected with the up end of sliding tray, valve rod 7 upper end is connected with lifting block 2's lower extreme, and valve rod 7's lower extreme is connected with the upper end of valve plate 4, the notch department of sliding tray is provided with the limiting plate, be provided with the thru hole of intercommunication sliding tray and valve body 3 inside on the limiting plate. By utilizing the structure, the valve plate can be automatically opened and closed, and the effect is good.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a two seal structure stop valves, its characterized in that, including valve body (3), valve gap (1), valve plate (4) and disk seat (6), install on valve body (3) in the disk seat (6) outside with valve plate (4) side terminal surface sealing sliding connection's direction sealing sleeve (5), the inboard end below of disk seat (6) is provided with the mounting groove, be provided with second spring (103) in the mounting groove, the upper end and the disk seat (6) of second spring (103) are connected, and the lower extreme is connected with the bottom face of mounting groove, valve plate (4) downside edge is double arc convex surface (104), disk seat (6) upper end is provided with double arc recess (101), double arc convex surface (104) and double arc recess (101) cooperate and use, during the closure, double arc convex surface and double arc recess sealing connection.

2. A shut-off valve of double seal construction according to claim 1, characterized in that the inner end of the valve seat (6) is provided with a sealing edge extending downwards.

3. The stop valve with the double-sealing structure according to claim 1, wherein the lower end of the valve cover (1) is provided with a sliding groove, two guide blocks (8) are symmetrically arranged on the side wall of the sliding groove, the lifting block (2) is slidably connected with the two guide blocks (8), the upper end of the lifting block (2) is connected with the lower end of the first spring (9), the upper end of the first spring (9) is connected with the upper end face of the sliding groove, the upper end of the valve rod (7) is connected with the lower end of the lifting block (2), the lower end of the valve rod (7) is connected with the upper end of the valve plate (4), a limiting plate is arranged at the notch of the sliding groove, and through holes for communicating the sliding groove with the inside of the valve body (3) are arranged on the limiting plate.