CN213929479U

CN213929479U - Hard seal butterfly valve structure

Info

Publication number: CN213929479U
Application number: CN202022779909.5U
Authority: CN
Inventors: 赵志城; 唐波; 张雪峰
Original assignee: SHANGHAI HUATONG VALVE CO Ltd
Current assignee: SHANGHAI HUATONG VALVE CO Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-08-10
Anticipated expiration: 2030-11-26

Abstract

The utility model relates to a hard seal butterfly valve structure, which belongs to the technical field of valves and comprises a valve body, wherein a valve rod is arranged in the valve body, one end of the valve rod is rotationally connected with the inner wall of the valve body, the other end of the valve rod penetrates through the valve body and extends to the outside, a butterfly plate fixedly connected with the valve rod is sleeved outside the valve rod, the butterfly plate is arranged in the valve body and is matched with the inner wall of the valve body, and an integral sealing ring is arranged between the butterfly plate and the inner wall of the valve body; the utility model discloses leading to and adopting stainless steel overall structure's whole sealing washer, realizing the hard seal of simple, greatly reduced sealed face by the erosive condition, consequently great improvement the life of valve.

Description

Hard seal butterfly valve structure

Technical Field

The utility model relates to the technical field of valves, specifically a butterfly valve structure seals firmly.

Background

The butterfly valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

The sealing structure of the butterfly valve has a plurality of sealing structures, but in the field of hard sealing butterfly valves, the traditional method is a three-eccentric and multi-layer structure, namely, a sealing ring is a composite superposition of a stainless steel sheet and a soft sealing material, but the structure has a defect that the soft sealing material in the composite sealing ring can be eroded after a long time due to the scouring of media when the valve is in an open state, so that the sealing quality is influenced.

Disclosure of Invention

An object of the utility model is to provide a butterfly valve structure sealed firmly to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a butterfly valve structure sealed firmly, includes the valve body, install the valve rod in the valve body, valve rod one end is rotated with the valve body inner wall and is connected, and the other end runs through the valve body and extends to the outside, the outside cover of valve rod is equipped with rather than fixed connection's butterfly plate, the butterfly plate sets up in the valve body and cooperatees rather than the inner wall, install whole sealing washer between butterfly plate and the valve body inner wall.

As a further technical solution of the present invention: the outer portion of the integral sealing ring is provided with a pressing plate used for fixing the integral sealing ring, and the pressing plate is fixedly connected with the butterfly plate.

As a further technical solution of the present invention: and a sealing gasket is arranged between the integral sealing ring and the butterfly plate, and a gasket groove matched with the sealing gasket is formed in the butterfly plate.

As the utility model discloses a further technical scheme again: the pressing plate is fixedly connected with the butterfly plate through a screw, and a screw hole matched with the screw is formed in the butterfly plate.

As the utility model discloses a further technical scheme again: the integral sealing ring is made of stainless steel.

Compared with the prior art, the beneficial effects of the utility model are that: the whole sealing ring with the stainless steel integral structure is adopted, so that pure hard sealing is realized, the erosion condition of the sealing surface is greatly reduced, and the service life of the valve is greatly prolonged.

Drawings

FIG. 1 is a schematic structural diagram of a hard seal butterfly valve structure;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1-valve body, 2-valve rod, 3-butterfly plate, 4-integral sealing ring, 5-sealing washer, 6-pressing plate and 7-screw.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

As shown in fig. 1, 2 hard seal butterfly valve structure, including valve body 1, installation valve rod 2 in the

valve body

1, 2 one end of valve rod is connected with 1 inner wall rotation of valve body, and the other end runs through valve body 1 and extends to the outside, 2 outside covers of valve rod are equipped with butterfly plate 3 rather than fixed connection, butterfly plate 3 sets up in valve body 1 and cooperatees rather than the inner wall, takes rotation of butterfly plate 3 to come to laminate with 1 inner wall of valve body through valve rod 2 promptly to control opening and closing of valve body 1, sealed face when closing is being prevented from being erodeed, install whole sealing washer 4 between butterfly plate 3 and the 1 inner wall of valve body, thereby improve the life of butterfly valve greatly.

Further, for the convenience of disassembling and assembling the integral sealing ring 4, a pressing plate 6 for fixing the integral sealing ring 4 is arranged outside the integral sealing ring 4, and the pressing plate 6 is fixedly connected with the butterfly plate 3.

Example 2

This embodiment further optimizes on embodiment 1's basis, for the laminating nature between improving whole sealing washer 4 and the butterfly plate 3, install seal ring 5 between whole sealing washer 4 and the butterfly plate 3, set up the gasket groove with seal ring 5 matched with on the butterfly plate 3, through gasket groove and seal ring 5 cooperation promptly, further improve holistic leakproofness.

Further, for making things convenient for clamp plate 6 to install, clamp plate 6 passes through

screw

7 and 3 fixed connection of butterfly plate, set up on the butterfly plate 3 with screw 7 matched with screw, pass clamp plate 6 promptly through screw 7 and screw spiral shell closes, fixes whole sealing washer 4 and seal ring 5, preferably, whole sealing washer 4 material is the stainless steel, adopts stainless steel overall structure's whole sealing washer 4 promptly, realizes simple hard sealed, greatly reduced the sealed condition of face erosion, consequently great improvement the life of valve.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a butterfly valve structure sealed firmly, includes valve body (1), installation valve rod (2), its characterized in that in valve body (1): valve rod (2) one end is rotated with valve body (1) inner wall and is connected, and the other end runs through valve body (1) and extends to the outside, the outside cover of valve rod (2) is equipped with butterfly plate (3) rather than fixed connection, butterfly plate (3) set up in valve body (1) and cooperate rather than the inner wall, install whole sealing washer (4) between butterfly plate (3) and valve body (1) inner wall.

2. The hard seal butterfly valve structure of claim 1, wherein: the outer portion of the integral sealing ring (4) is provided with a pressing plate (6) used for fixing the integral sealing ring (4), and the pressing plate (6) is fixedly connected with the butterfly plate (3).

3. The structure of a hard seal butterfly valve according to claim 1 or 2, wherein: a sealing washer (5) is installed between the integral sealing ring (4) and the butterfly plate (3), and a gasket groove matched with the sealing washer (5) is formed in the butterfly plate (3).

4. The structure of a hard seal butterfly valve according to claim 2, wherein: the pressing plate (6) is fixedly connected with the butterfly plate (3) through a screw (7), and a screw hole matched with the screw (7) is formed in the butterfly plate (3).

5. The hard seal butterfly valve structure of claim 1, wherein: the integral sealing ring (4) is made of stainless steel.