CN219493082U - Fluorine lining butterfly valve capable of reducing flushing of sealing surface - Google Patents

Abstract

The utility model relates to the technical field of fluorine-lined butterfly valves, in particular to a fluorine-lined butterfly valve capable of reducing flushing of a sealing surface, which comprises a valve body, a valve seat and butterfly plates, wherein crescent moon plates are arranged on two sides in the valve seat, the thickness of each crescent moon plate is not less than that of each butterfly plate, the two crescent moon plates are contacted with two sides of each butterfly plate in a fully opened state, and a buffer brush ring is arranged on the inner wall of the valve seat; according to the utility model, two sides of the butterfly plate in a fully-opened state are shielded by the two crescent plates, so that media are prevented from scouring sealing surfaces at two sides of the butterfly plate, the sealing performance of the sealing surfaces at two sides of the butterfly plate is ensured, meanwhile, the spherical grooves on the circular ring increase the sealing area between the butterfly plate and the inner wall of the valve seat, and block and change the trend of the valve seat channel close to the media at the inner wall, so that the media close to the inner wall are close to the middle of the channel, and the scouring of the media to the sealing parts of the valve seat and the butterfly plate is reduced, thereby greatly improving the sealing performance of the valve seat and prolonging the service life of the valve seat.

Description

Fluorine lining butterfly valve capable of reducing flushing of sealing surface

Technical Field

The utility model relates to the technical field of fluorine-lined butterfly valves, in particular to a fluorine-lined butterfly valve capable of reducing flushing of sealing surfaces.

Background

At present, a fluorine-lined butterfly valve is used as a component for realizing on-off and flow control of a pipeline system, and has been widely applied in many fields of petroleum, chemical industry, metallurgy, hydropower and the like. The butterfly plate of the fluorine lining butterfly valve is arranged in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, the rotation angle is between 0 and 90 degrees, and when the butterfly plate rotates to 90 degrees, the valve is in a full-open state.

When the valve plate is in a normally open state, the medium forms a front flushing on the sealing surface of the valve plate, and after the soft sealing band in the metal sheet interlayer is flushed, the sealing performance is directly affected, but the existing fluorine-lined butterfly valve cannot solve the problem. In view of this, we propose a fluorine lined butterfly valve that reduces seal face erosion.

Disclosure of Invention

In order to make up for the defects, the utility model provides the fluorine-lined butterfly valve capable of reducing the flushing of the sealing surface.

The technical scheme of the utility model is as follows:

the fluorine-lined butterfly valve capable of reducing flushing of a sealing surface comprises a valve body, a valve seat and a butterfly plate, wherein crescent moon plates are arranged on two sides in the valve seat, the thickness of each crescent moon plate is not smaller than that of each butterfly plate, and the two crescent moon plates are contacted with two sides of the butterfly plate in a fully opened state and used for shielding the two sides of the butterfly plate in the fully opened state;

and a buffer brush ring for reducing medium flushing on the sealing parts of the valve seat and the butterfly plate is arranged on the inner wall of the valve seat.

Preferably, the valve seat is cylindrical, the periphery of the valve seat is arranged on the inner wall of the valve body, and the butterfly plate is arranged in the valve seat.

Preferably, a valve rod is arranged on the butterfly plate, the valve rod is arranged on the valve body, and both ends of the valve body are connected with flange plates.

Preferably, valve rod holes are formed in the upper end and the lower end of the valve seat, and the valve rod penetrates through the valve rod holes.

Preferably, the buffer brush ring is formed by a circular ring, and a spherical groove which is recessed downwards is arranged on the inner surface of the circular ring.

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

according to the utility model, two sides of the butterfly plate in a fully-opened state are shielded by the two crescent plates, so that media are prevented from scouring sealing surfaces at two sides of the butterfly plate, the sealing performance of the sealing surfaces at two sides of the butterfly plate is ensured, meanwhile, the spherical grooves on the circular ring increase the sealing area between the butterfly plate and the inner wall of the valve seat, and block and change the trend of the valve seat channel close to the media at the inner wall, so that the media close to the inner wall are close to the middle of the channel, and the scouring of the media to the sealing parts of the valve seat and the butterfly plate is reduced, thereby greatly improving the sealing performance of the valve seat and prolonging the service life of the valve seat.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view, partially in section, of the present utility model;

FIG. 3 is a schematic view of a valve seat structure according to the present utility model.

In the figure: 1. a valve body; 2. a valve stem; 3. a flange plate; 4. a valve seat; 5. a butterfly plate; 6. a crescent plate; 7. a valve stem bore; 8. and (3) a circular ring.

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.

Referring to fig. 1-3, the present utility model is described in detail by the following embodiments:

the utility model provides a can reduce lining fluorine butterfly valve that sealed face erodees, includes valve body 1, wholly is the cylinder, equal fixedly connected with ring flange 3 on the both ends of valve body 1, and ring flange 3 is used for connecting the pipeline, and fixed mounting has disk seat 4 on the valve body 1 inner wall, and disk seat 4 is also the cylinder, and the peripheral sealed laminating fixed mounting of disk seat 4 is on the inner wall of valve body 1.

In this embodiment, install butterfly plate 5 in the disk seat 4, butterfly plate 5 rotates the diameter direction of installing in disk seat 4 inner tube, in valve body 1, butterfly plate 5 rotates round the axis, rotation angle is between 0 ~ 90, when rotatory 90, the valve is full open state or closed state, fixed mounting has valve rod 2 on the central axis of butterfly plate 5, the upper and lower both ends of disk seat 4 all are equipped with valve rod hole 7, valve rod 2 sealed rotation passes valve rod hole 7, the upper and lower both ends and the valve body 1 inner wall rotation of valve rod 2 are connected, and the upper end of valve rod 2 exposes valve body 1.

In this embodiment, both sides all are equipped with crescent moon plate 6 in the disk seat 4, crescent moon plate 6 vertical tangential disk seat 4 internal medium flow direction, and the both sides of butterfly plate 5 are located to two crescent moon plates 6, and crescent moon plate 6 is close to one side of butterfly plate 5 and one side of wide open state butterfly plate 5 contact each other, and crescent moon plate 6's thickness is not less than the thickness of butterfly plate 5, be used for sheltering from the both sides of wide open state butterfly plate 5, when having avoided the wide open state, the medium in the disk seat 4 erodees the sealed face of butterfly plate 5 both sides, and fixed mounting has the buffering brush ring that is used for reducing medium and erodees disk seat 4 and butterfly plate 5 sealing part on the disk seat 4 inner wall, the buffering brush ring comprises ring 8, ring 8 fixed mounting is on disk seat 4 inner wall, be equipped with the spherical groove of undercut on the ring 8 internal surface.

Because the butterfly plate 5 is the disc, and valve rod 2 installs on the center axis of butterfly plate 5, so along with butterfly plate 5 rotates 360 with valve rod 2, form spherical route, spherical groove on the ring 8 internal surface corresponds with each other with forming the sphere, the spherical groove on the ring 8 has increased the area that can seal between butterfly plate 5 and the disk seat 4 inner wall, because ring 8 internal surface undercut, so ring 8 both ends are higher, stop and change the trend that disk seat 4 passageway is close to the inner wall medium, make the medium that is close to the inner wall be close to the passageway centre, the scouring of medium to disk seat 4 and disk seat 5 sealing position has been reduced.

In this embodiment, when the present utility model is in the fully open state, the butterfly plate 5 is perpendicular to the medium flow direction of the valve seat 4, and the crescent plates 6 on both sides shield both sides of the butterfly plate 5 in the fully open state, so as to avoid the medium from scouring the sealing surfaces on both sides of the butterfly plate 5, thereby ensuring the sealing performance of the sealing surfaces on both sides of the butterfly plate 5, and the spherical groove on the circular ring 8 increases the sealing area between the butterfly plate 5 and the inner wall of the valve seat 4, and further, because the inner surface of the circular ring 8 is concave downward, both ends of the circular ring 8 are higher, the trend of the medium close to the inner wall of the valve seat 4 is blocked and changed, so that the medium close to the inner wall approaches the middle of the channel, and the scouring of the medium to the sealing parts of the valve seat 4 and the butterfly plate 5 is reduced, thereby greatly increasing the sealing performance of the valve seat 4.

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 (5)

1. Can reduce lining fluorine butterfly valve that sealed face erodees, including valve body (1), disk seat (4) and butterfly plate (5), its characterized in that: the two sides in the valve seat (4) are respectively provided with a crescent plate (6), the thickness of the crescent plates (6) is not smaller than that of the butterfly plates (5), and the two crescent plates (6) are contacted with the two sides of the butterfly plates (5) in the fully opened state and are used for shielding the two sides of the butterfly plates (5) in the fully opened state;

the inner wall of the valve seat (4) is provided with a buffer brush ring for reducing medium flushing at the sealing part of the valve seat (4) and the butterfly plate (5).

2. A fluorine lined butterfly valve for reducing seal face washout as defined in claim 1, wherein: the valve seat (4) is cylindrical, the periphery of the valve seat (4) is arranged on the inner wall of the valve body (1), and the butterfly plate (5) is arranged in the valve seat (4).

3. A fluorine lined butterfly valve for reducing seal face washout as defined in claim 1, wherein: the butterfly plate (5) is provided with a valve rod (2), the valve rod (2) is arranged on the valve body (1), and two ends of the valve body (1) are connected with flange plates (3).

4. A fluorine lined butterfly valve for reducing seal face washout as defined in claim 3, wherein: valve rod holes (7) are formed in the upper end and the lower end of the valve seat (4), and the valve rod (2) penetrates through the valve rod holes (7).

5. A fluorine lined butterfly valve for reducing seal face washout as defined in claim 1, wherein: the buffer brush ring is composed of a circular ring (8), and a spherical groove which is sunken downwards is arranged on the inner surface of the circular ring (8).