CN215720891U

CN215720891U - Eccentric ball type butterfly valve

Info

Publication number: CN215720891U
Application number: CN202121647495.9U
Authority: CN
Inventors: 林文华
Original assignee: Shandong Autotec Automatic Control Equipment Co ltd
Current assignee: Shandong Autotec Automatic Control Equipment Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-02-01
Anticipated expiration: 2031-07-20

Abstract

The utility model discloses an eccentric rotary ball type butterfly valve which comprises a valve body, wherein a valve seat is fixedly connected inside the valve body, one side of the valve seat is movably connected with a butterfly plate, the butterfly plate is of a three-eccentric rotary ball type structure, and a ball sealing surface is arranged on the outer side surface of the butterfly plate. This eccentric core ball formula butterfly valve is through having adopted three eccentric ball structures with the butterfly plate, thereby realize that the butterfly plate separates promptly in the twinkling of an eye opening, the effect sealed is promptly closed in the contact of closing, thereby realized opening and close frictionless, to oxygen, coal gas inflammable medium characteristics, application range is wide, and this kind of structure can realize the high pressure difference butterfly valve, the moment advantage that the butterfly valve was opened has been alleviateed greatly, make disk seat and the disk plate open and close frictionless have close tighter sealing function more, the problem of sealed when the temperature variation is thoroughly solved to this kind of structure, high temperature resistant, the cavitation, and can use as the governing valve on the pipeline, can reach two-way nominal pressure V1 bubble level sealed, realize zero and reveal.

Description

Eccentric ball type butterfly valve

Technical Field

The utility model relates to the technical field of valves, in particular to a core-offset rotary ball type butterfly valve.

Background

With the further development of the coal chemical industry, the working conditions of the coal gasification device are harsh, the medium not only has high pressure and temperature, but also contains a large amount of solid particles and has certain corrosivity, and the device has high danger, valves (such as slag locking valves, black water, grey water, coal slurry valves, angle valve butterfly valves, oxygen valves and the like) for the coal gasification device in China before 2000 are basically imported, such as key valves for gasification devices of Yan Ore Lunan chemical fertilizer plants, Shanghai coking plants, Shanxi Weihe chemical fertilizer plants and Anhui Huaihi chemical groups are basically imported products, in recent years, the price of international crude oil is continuously increased, the economic benefit of the coal chemical industry is better and better, the coal chemical industry in China has been rapidly developed since 2004, is restricted by the delivery date and price of the imported valves, and the manufacturing level of the valves in China is continuously improved, especially, valve enterprises in China successfully solve the main problem of the valve for the coal gasification device by carrying out a large number of special attacks and customs aiming at the coal gasification device;

the traditional butterfly valve sealing ring is designed by a soft laminated metal sheet and a hard seal, the structure adopts eccentricity and X axis sealing, the structure can not realize a butterfly valve with high pressure difference, the butterfly plate can not be separated instantly when opened, the closing contact can not achieve the effect of three eccentric core sealing, and therefore the opening and closing friction is large, the structure greatly causes the moment for opening the butterfly valve, the traditional butterfly valve is difficult to restore the effect of the front sealing after the sealing abrasion and leakage, the maintenance cost is high and is not economical, and therefore the eccentric core rotary ball type butterfly valve is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an eccentric rotary ball type butterfly valve, which solves the problems that the traditional butterfly valve sealing ring in the background technology is designed by soft laminated metal sheets and hard sealing, the structure adopts eccentric and X-axis sealing, the structure can not realize the butterfly valve with high pressure difference, the butterfly plate can not be separated at the opening moment, the closing contact can not achieve the effect of triple eccentric sealing, the opening and closing friction is large, the structure greatly causes the moment for opening the butterfly valve, the maintenance is difficult to recover the former sealing effect after the traditional butterfly valve sealing is worn and leaked, and the maintenance cost is high and uneconomical.

In order to achieve the purpose, the utility model provides the following technical scheme: eccentric core ball formula butterfly valve, including the valve body, the inside fixedly connected with disk seat of valve body, one side swing joint of disk seat has the butterfly plate, the butterfly plate is three eccentric ball formula structures, the outside surface of butterfly plate is equipped with the ball sealed face, one side fixed connection of butterfly plate has the valve clack, the inside swing joint of valve body has the valve rod, the inner wall of valve body is provided with packs, the up end of valve body can be dismantled through the bolt and be connected with pneumatic valve device, the lower extreme of valve rod can be dismantled with the butterfly plate and be connected, the upper end and the pneumatic valve device of valve rod can be dismantled and be connected, the lower terminal surface of valve body can be dismantled and be connected with lower valve gap.

Preferably, the outer side surface of the butterfly plate is sprayed with a nickel-based alloy.

Preferably, the filler is made of flexible graphite.

Compared with the prior art, the utility model has the beneficial effects that: the eccentric rotary ball type butterfly valve adopts a three-eccentric rotary ball type structure to the butterfly plate, so that the butterfly plate is separated at the opening moment, and the effect of sealing is realized when the butterfly plate is closed and contacted, so that the characteristics of no friction in opening and closing and the use of oxygen and coal gas inflammable media are realized, the application range is expanded, the structure can realize a high-pressure-difference butterfly valve, the moment advantage of opening the butterfly valve is greatly reduced, the valve seat and the butterfly plate are enabled to have a sealing function of closing and tightening without friction, the structure thoroughly solves the problem of sealing leakage in temperature change, is high-temperature resistant and cavitation resistant, can be used as a regulating valve on a pipeline, can achieve bidirectional nominal pressure V1 bubble-level sealing, realizes zero leakage, and the surface of the butterfly plate is sprayed with alloy, so that the butterfly plate can endure long-time scouring of the media, the service life is prolonged, and the safety is ensured.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic view of a butterfly plate structure of the present invention;

FIG. 4 is a schematic top view of the butterfly plate of the present invention.

In the figure: 1. a valve body; 2. a valve flap; 3. a valve stem; 4. a filler; 5. an air valve device; 6. a butterfly plate; 7. a valve seat; 8. a lower valve cover; 9. a ball sealing surface.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides a technical solution: eccentric ball formula butterfly valve, including valve body 1, the inside fixedly connected with disk seat 7 of valve body 1, one side swing joint of disk seat 7 has butterfly plate 6, and butterfly plate 6 is three eccentric ball formula structures, the outside surface of butterfly plate 6 is equipped with ball sealing face 9, and the outside surface spraying of butterfly plate 6 has nickel base alloy, makes butterfly plate 6 endure the long-time washing away of medium, and one side fixedly connected with valve clack 2 of butterfly plate 6, the inside swing joint of valve body 1 has valve rod 3, and the inner wall of valve body 1 is provided with filler 4, and filler 4 is made for flexible graphite, and the up end of valve body 1 can be dismantled through the bolt and be connected with air valve device 5, and the lower extreme of valve rod 3 can be dismantled with butterfly plate 6 and be connected, and the upper end and the air valve device 5 of valve rod 3 can be dismantled and be connected, and the lower terminal surface of valve body 1 can be dismantled and be connected with lower valve gap 8.

The working principle is as follows: the butterfly plate adopts a three-eccentric rotary ball type structure, the first eccentricity refers to the relative eccentricity of a bisector in the thickness direction of the butterfly plate and the center of a valve rod, the second eccentricity refers to the relative eccentricity of the center of the valve rod and the center of a valve channel, and the third eccentricity refers to the relative eccentricity of the center line of a conical sealing surface and the center line of the valve, so that the butterfly plate 6 is separated at the opening moment, and is closed and contacted to realize the sealing effect, thereby realizing the opening and closing effects without friction, having the use characteristics of oxygen and gas inflammable media, and expanding the use range, and the structure can realize a high-pressure difference butterfly valve, greatly lightening the moment advantage of opening the butterfly valve, leading the valve seat 7 and the butterfly plate 6 to be opened and closed without friction, having the sealing function which is tighter and tighter, thoroughly solving the problem of sealing leakage during temperature change, being resistant to high temperature and cavitation, being capable of being used as a regulating valve on a pipeline, and achieving the bidirectional nominal pressure V1 bubble level sealing, zero leakage is realized, and the nickel-based alloy is sprayed on the surface of the disc plate, so that the disc plate can resist long-time scouring of media, the service life is prolonged, and the safety is ensured.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Eccentric rotary ball butterfly valve, including valve body (1), its characterized in that: the inside fixedly connected with disk seat (7) of valve body (1), one side swing joint of disk seat (7) has butterfly plate (6), butterfly plate (6) are three eccentric ball formula structures, the outside surface of butterfly plate (6) is equipped with the sealed face of ball (9), one side fixedly connected with valve clack (2) of butterfly plate (6), the inside swing joint of valve body (1) has valve rod (3), the inner wall of valve body (1) is provided with packs (4), the up end of valve body (1) can be dismantled through the bolt and be connected with air valve device (5), the lower extreme and the butterfly plate (6) of valve rod (3) can be dismantled and be connected, the upper end and the air valve device (5) of valve rod (3) can be dismantled and be connected, the lower terminal surface of valve body (1) can be dismantled and be connected with lower valve gap (8).

2. The eccentric ball butterfly valve of claim 1, wherein: the outer side surface of the butterfly plate (6) is sprayed with nickel-based alloy.

3. The eccentric ball butterfly valve of claim 1, wherein: the filler (4) is made of flexible graphite.