CN212203157U

CN212203157U - Wear-resistant butterfly valve

Info

Publication number: CN212203157U
Application number: CN202020838736.7U
Authority: CN
Inventors: 刘万平; 刘荣
Original assignee: Zhejiang Lizhi Metal Products Technology Co ltd
Current assignee: Zhejiang Lizhi Metal Products Technology Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-12-22
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a wear-resistant butterfly valve, which comprises a valve body, a valve core, a valve rod and a valve plate, wherein the valve plate consists of the valve core and a rod sleeve, the surface shape of one side of the valve core is matched with the inner surface shape of the valve body, the middle part of the valve rod is inserted into a groove of the rod sleeve, the lower part of the valve rod is inserted into the bottom wall of the valve body, the upper part of the valve rod is sealed and extends out of the top wall of the valve body, the valve rod is fixedly connected with the valve plate, one side of the valve rod is fixedly connected with a handle through a connecting shaft, when the handle is rotated to rotate the valve rod, the valve plate is driven to rotate, when the rotating angle of the valve rod is close to a closing point, a metal hard sealing ring sleeved on the outer wall of the valve plate is contacted with the surface of an inner cavity of the valve body, the sealing effect is better, prevents that rivers from leading to butterfly valve surface dewfall because sealed not tight, causes the butterfly valve surface to be corroded.

Description

Wear-resistant butterfly valve

Technical Field

The utility model relates to a butterfly valve, in particular to stand wear and tear butterfly valve belongs to butterfly valve technical field.

Background

The existing butterfly generally comprises a valve body, a valve plate and a valve rod, wherein a valve seat is arranged in the valve body and can be made of rigid materials or flexible materials, the valve plate comprises a valve core and a rod sleeve, the valve core can be in sealing contact with the valve seat, the valve rod is inserted into the rod sleeve, and the valve plate rotates along with the valve rod when the valve rod rotates, so that the valve core is in sealing contact with the valve seat or is separated from the valve seat, and the butterfly valve is opened or closed. When the butterfly valve is opened or closed, friction can be generated between the valve core and the valve seat, the sealing surface of the valve core can be abraded, the sealing performance of the butterfly valve is reduced, the service life of the butterfly valve is influenced, most of valves used at present are made of metal, and in order to achieve the purpose of corrosion resistance, the inner cavity and the valve core of the valve are covered with sleeve layers made of polytetrafluoroethylene, rubber and the like for resisting corrosion of fluid. But the defects are that the application temperature is low, the pressure range is small, the corrosion of high-temperature and high-pressure corrosive fluid cannot be borne, the service life is short, the maintenance and the replacement are frequent, and the use is difficult.

SUMMERY OF THE UTILITY MODEL

The utility model provides a stand wear and tear butterfly valve for solve the problem of proposing among the background art.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a stand wear and tear butterfly valve, including valve body, case, valve rod and valve plate, the valve plate comprises case and rod cover, the surface shape of case one side matches with the internal surface shape of valve body, insert in the groove of rod cover at the middle part of valve rod, the diapire of valve body is inserted to the lower part of valve rod, the roof of valve body is sealed to be stretched out from on the upper portion of valve rod, valve rod and valve plate fixed connection, connecting axle fixedly connected with handle is passed through to one side of valve rod.

As an optimized technical scheme of the utility model, the surface of rod cover passes through hexagon socket head screw and valve rod fixed connection.

As an optimized technical proposal of the utility model, the annular outer wall of the valve plate is sleeved with a metal hard sealing ring.

As an optimized technical proposal of the utility model, the ceramic surface layer combined by the ceramic blocks is added on the surface of the inner cavity of the valve body and the surface of the valve core.

The utility model discloses the beneficial effect who reaches is:

1. the utility model discloses simple structure, during the use, thereby can drive the valve plate and rotate when user turning handle makes the valve rod rotate, when valve rod pivoted angle is close when closing the point, the hard sealing washer of metal that the cover was equipped with then contacts with valve body inner chamber surface on the outer jade of valve plate, the degree of wear-resisting of the hard sealing washer of metal multiplicable valve plate through setting up, the coefficient of friction between valve plate and the valve body has been reduced simultaneously, this hard sealing washer of metal adopts the metal seal mode, sealed effect is better, prevent that rivers from because sealed not tight, lead to butterfly valve surface dewfall, cause the butterfly valve surface to be corroded.

2. The surface through the inner chamber surface at the valve body and case adds the ceramic surface course of having established by the ceramic piece combination, when this valve is used for high temperature high pressure and corrosive fluids, the fluid that the ceramic surface course will have corrosivity keeps apart with the metal covering on valve body inner chamber and case surface to this improves the corrosion resistance of valve, because the good performance of the withstand voltage corrosion resistant stand wear and tear of ceramic surface course, makes the utility model discloses have the good performance of withstand voltage corrosion resistant stand wear and tear of high temperature resistant, increased valve body life.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the inner surface structure of the valve body of the present invention;

fig. 3 is a schematic view of the valve plate structure of the present invention.

In the figure: 1. a valve body; 2. a valve core; 3. a valve stem; 4. a rod sleeve; 5. a valve plate; 6. a handle; 7. a ceramic facing; 8. a hexagon socket head screw; 9. metal hard seal ring.

Detailed Description

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

Example (b): as shown in fig. 1-3, a wear-resistant butterfly valve comprises a valve body 1, a valve core 2, a valve rod 3 and a valve plate 5, wherein the valve plate 5 is composed of the valve core 2 and a rod sleeve 4, the surface shape of one side of the valve core 2 is matched with the inner surface shape of the valve body 1, the middle part of the valve rod 3 is inserted into a groove of the rod sleeve 4, the lower part of the valve rod 3 is inserted into the bottom wall of the valve body 1, the upper part of the valve rod 3 extends out from the top wall of the valve body 1 in a sealing manner, the valve rod 3 is fixedly connected with the valve plate 5.

The outer surface of the rod sleeve 4 is fixedly connected with the valve rod 3 through an inner hexagon head screw 8, a metal hard sealing ring 9 is sleeved on the annular outer wall of the valve plate 5, the wear-resisting degree of the valve plate 5 can be increased through the arranged metal hard sealing ring 9, the friction coefficient between the valve plate 5 and the valve body 1 is reduced at the same time, the metal hard sealing ring 9 adopts a metal sealing mode, the sealing effect is better, the phenomenon that the surface of the butterfly valve is dewed due to poor sealing of water flow to cause the corrosion of the outer surface of the butterfly valve is avoided, a ceramic surface layer 7 formed by combining ceramic blocks is additionally arranged on the surface of the inner cavity of the valve body 1 and the surface of the valve core 2, when the valve is used for high-temperature high-pressure corrosive fluid, the ceramic surface layer 7 isolates the corrosive fluid from the metal surfaces of the inner cavity of the valve body 1 and the surface of the valve core 2, so as the corrosion, make the utility model discloses have the good nature of high temperature resistant withstand voltage corrosion-resistant stand wear and tear, increased 1 life of valve body.

The working principle is as follows: the utility model has simple structure, when in use, when a user rotates the handle 6 to rotate the valve rod 3, the valve plate 5 can be driven to rotate, when the rotating angle of the valve rod 3 is close to a closing point, the metal hard sealing ring 9 sleeved on the outer wall of the valve plate 5 is contacted with the surface of the inner cavity of the valve body 1, the wear-resisting degree of the valve plate 5 can be increased by the arranged metal hard sealing ring 9, and the friction coefficient between the valve plate 5 and the valve body 1 is reduced, the metal hard sealing ring 9 adopts a metal sealing mode, the sealing effect is better, the phenomenon that the surface of the butterfly valve is dewed due to untight sealing of water flow to cause the corrosion of the outer surface of the butterfly valve is avoided, by additionally arranging the ceramic surface layer 7 formed by ceramic blocks on the surface of the inner cavity of the valve body 1 and the surface of the valve core 2, when the valve is used for high-temperature, high-pressure and corrosive fluid, the ceramic surface, with this corrosion resistance who improves the valve, because the good performance of high temperature resistant withstand voltage corrosion resistant stand wear and tear of ceramic surface course 7 makes the utility model discloses have the good performance of high temperature resistant withstand voltage corrosion resistant stand wear and tear, increased 1 life of valve body.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a wear-resisting butterfly valve, its characterized in that, includes valve body (1), case (2), valve rod (3) and valve plate (5), valve plate (5) comprise case (2) and rod cover (4), the surface shape of case (2) one side cooperatees with the internal surface shape of valve body (1), insert in the groove of rod cover (4) the middle part of valve rod (3), the diapire of valve body (1) is inserted to the lower part of valve rod (3), the roof of valve body (1) is sealed to be stretched out from on the upper portion of valve rod (3), valve rod (3) and valve plate (5) fixed connection, connecting axle fixedly connected with handle (6) is passed through to one side of valve rod (3).

2. A wear-resistant butterfly valve in accordance with claim 1, wherein: the outer surface of the rod sleeve (4) is fixedly connected with the valve rod (3) through a hexagon socket head screw (8).

3. A wear-resistant butterfly valve in accordance with claim 1, wherein: the annular outer wall of the valve plate (5) is sleeved with a metal hard sealing ring (9).

4. A wear-resistant butterfly valve in accordance with claim 1, wherein: and a ceramic surface layer (7) formed by combining ceramic blocks is additionally arranged on the surfaces of the inner cavity of the valve body (1) and the valve core (2).