CN207049347U - A kind of ball face sealing butterfly valve - Google Patents
A kind of ball face sealing butterfly valve Download PDFInfo
- Publication number
- CN207049347U CN207049347U CN201721029522.XU CN201721029522U CN207049347U CN 207049347 U CN207049347 U CN 207049347U CN 201721029522 U CN201721029522 U CN 201721029522U CN 207049347 U CN207049347 U CN 207049347U
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- Prior art keywords
- sealing
- sealing ring
- valve seat
- valve
- face
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Abstract
It the utility model is related to a kind of ball face sealing butterfly valve, including valve body, valve seat and dish plate are provided with valve body, sealing ring is provided with dish plate, the outer peripheral face of sealing ring and the inner peripheral surface of valve seat one of them be spherical, another is plane, so as to have the sealing fit structure that the sealing of line face coordinates between sealing ring and valve seat, is had between spherical and plane in the axial both sides of sealing fit structure by the sealing fit structure gap that outwards distance gradually increases.When the impurity of absorption on the outer peripheral face of sealing ring or on the medial surface of valve seat be present, the sealing between sealing ring and valve seat, which is coordinated, influences also very little, considerably increases its service life, in the environment for being especially suitable for conveying some media with impurity.
Description
Technical field
It the utility model is related to a kind of ball face sealing butterfly valve.
Background technology
The sealing pair of hard seal butterfly valve is made up of metallic hard material to metallic hard material, is used for heat supply, is supplied
The environment such as gas, coal gas, oil product, hard seal butterfly valve corrosion resistance is good, service life length.
Authorization Notice No. is that the U of CN 203477351 Chinese utility model patent discloses a kind of ball face sealing butterfly valve, is wrapped
Valve body is included, is fixed with valve seat in valve body, processing oil concave spherical surface on valve seat, dish plate is provided with valve seat, is provided with and recessed ball on dish plate
The convex spherical of face adaptation, is provided with standing groove on convex spherical, sealing ring is provided with standing groove, using concave spherical surface and convex spherical
Ball face sealing mode.But above-mentioned sealing means have problems with, when the impurity in medium is attached to concave spherical surface and convex spherical
Between when, the especially impurity of some hard can cause that sealing can not be realized between valve seat and dish plate, and closing valve plate by force can lead
The damage of dish valve is caused, reduces its service life.
The content of the invention
The purpose of this utility model is to provide that a kind of service life is long, non-damageable ball face sealing butterfly valve.
To achieve the above object, a kind of ball face sealing butterfly valve of the present utility model adopts the following technical scheme that：A kind of sphere
Sealed butterfly valve, including valve body, valve seat and dish plate are provided with valve body, sealing ring, the periphery of the sealing ring are provided with dish plate
One of them is spherical to the inner peripheral surface of face and valve seat, and another is plane, so as to have line-face between sealing ring and valve seat
The sealing fit structure coordinated is sealed, is had between spherical and plane in the axial both sides of sealing fit structure with sealing
The structure gap that outwards distance gradually increases.
Ring-shaped step of the opening towards valve seat is provided with the dish plate, sealing ring is arranged on ring-shaped step and fixed company
It is connected on dish plate.
The sealing ring includes metal sealing ring body, and wearing layer is provided with the side face of sealing ring body.
The beneficial effects of the utility model：Coordinated between sealing ring and valve seat by spherical and plane to realize sealing ring
Coordinate between valve seat for line-face sealing, when the impurity that absorption on the outer peripheral face of sealing ring or on the medial surface of valve seat be present
When, the sealing between sealing ring and valve seat, which is coordinated, influences also very little, considerably increases its service life, is especially suitable for defeated
In the environment for giving some media with impurity.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the embodiment one of ball face sealing butterfly valve of the present utility model；
Fig. 2 is sectional views of the Fig. 1 at A-A；
Fig. 3 is partial enlarged drawings of the Fig. 2 at B；
Fig. 4 is a kind of structural representation of the embodiment two of ball face sealing butterfly valve of the present utility model.
Embodiment
A kind of embodiment one of ball face sealing butterfly valve of the present utility model：As shown in Figure 1-Figure 3, including the valve with valve pocket
Body 1, valve seat 4 and dish plate 2 being provided with valve pocket, sealing ring 5 being provided with dish plate 2, ball face sealing butterfly valve also includes connecting with dish plate 2
Connect be used for drive dish plate 2 to rotate to open and close the valve rod 3 of valve pocket.Ring-shaped step of the opening towards valve seat is provided with close dish plate 2,
Sealing ring 5 is arranged on ring-shaped step and is fixedly connected on by screw on dish plate 2.The inner peripheral surface of valve seat 4 is plane 8, sealing
The outer peripheral face of circle 5 is spherical 7, makes have line-face close between sealing ring 5 and valve seat 4 by the cooperation of spherical 7 and plane 8
The sealing fit structure coordinated is sealed, is had between spherical 7 and plane 8 in the axial both sides of sealing fit structure with sealing
The structure gap 9 that outwards distance gradually increases.
Embodiment two of the present utility model, as shown in figure 4, sealing ring 5 includes metal sealing ring body 51, sealing ring
Wearing layer 52 is provided with the side face of body 51, ring-shaped step is arranged on dish plate 2, and sealing ring body 51 is fixed by screw 10
It is connected on dish plate.
Embodiment three of the present utility model, the difference with embodiment one are that the outer peripheral face of sealing ring is plane, valve seat
Inner peripheral surface is spherical of the convex portion towards sealing ring.
Example IV of the present utility model, the difference with utility model are that sealing ring can also be bonded on valve seat.
Claims (3)
1. a kind of ball face sealing butterfly valve, including valve body, valve seat and dish plate are provided with valve body, sealing ring is provided with dish plate, its
It is characterised by：One of them is spherical for the outer peripheral face of the sealing ring and the inner peripheral surface of valve seat, and another is plane, so that
The sealing fit structure that there is line-face sealing to coordinate between sealing ring and valve seat, coordinates knot between spherical and plane in sealing
The axial both sides of structure have by the sealing fit structure gap that outwards distance gradually increases.
2. ball face sealing butterfly valve according to claim 1, it is characterised in that：Opening is provided with the dish plate towards valve seat
Ring-shaped step, sealing ring is arranged on ring-shaped step and is fixedly connected on dish plate.
3. ball face sealing butterfly valve according to claim 1, it is characterised in that：The sealing ring includes metal sealing ring
Body, wearing layer is provided with the side face of sealing ring body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721029522.XU CN207049347U (en) | 2017-08-17 | 2017-08-17 | A kind of ball face sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721029522.XU CN207049347U (en) | 2017-08-17 | 2017-08-17 | A kind of ball face sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207049347U true CN207049347U (en) | 2018-02-27 |
Family
ID=61503134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721029522.XU Active CN207049347U (en) | 2017-08-17 | 2017-08-17 | A kind of ball face sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207049347U (en) |
-
2017
- 2017-08-17 CN CN201721029522.XU patent/CN207049347U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |