CN205715705U - Two way seal metallic seal butterfly valve - Google Patents
Two way seal metallic seal butterfly valve Download PDFInfo
- Publication number
- CN205715705U CN205715705U CN201620618090.5U CN201620618090U CN205715705U CN 205715705 U CN205715705 U CN 205715705U CN 201620618090 U CN201620618090 U CN 201620618090U CN 205715705 U CN205715705 U CN 205715705U
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- Prior art keywords
- valve seat
- valve
- seal
- butterfly
- sealing
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Abstract
This utility model provides a kind of two way seal metallic seal butterfly valve, it includes valve body, valve rod and butterfly plate, it is provided with groove between described valve body side and valve seat trim ring, in described groove, valve seat is set, described valve seat constitutes sealing with butterfly plate two ends and coordinates, between described valve seat and valve seat trim ring, gap is set, described valve seat has the first state coordinated with the composition sealing of valve seat trim ring under medium forward impact and constitutes, with butterfly plate, the second state that sealing coordinates under medium reverse impact, by arranging the valve seat that can realize two way seal, make it constitute from different parts under the effect of the impulsive force of different directions and seal cooperation, realize two way seal, guarantee that butterfly valve does not haves the phenomenon of internal hemorrhage due to trauma.
Description
Technical field
This utility model relates to a kind of butterfly valve, is specifically related to a kind of two way seal metallic seal butterfly valve.
Background technology
Butterfly valve disc type opening and closing element i.e. butterfly plate reciprocating rotating about 90 ° is opened, is closed and regulated fluid passage
A kind of valve.Existing butterfly valve seal circle is fixed on butterfly plate by trim ring circle, and valve seat Precision Machining equal with sealing ring is tapered.Behaviour
Make mechanism's band ovable valve stem, make sealing ring act as 90 ° of rotary motions to realize valve seal with butterfly plate one.But this structure
Butterfly valve immobilizes due to the position of valve seat, and just determining pipeline medium can only be from the side of the valve i.e. end of cone-shaped seal structure
Face is pressed through external force and medium power makes sealing ring be pressed on valve seat, it is achieved seal；If otherwise medium is from cone-shaped seal structure
Top pressure, huge medium power can make butterfly plate produce the deformation of trace, makes sealing ring and valve base sealing power reduce, even exists
Produce gap on contact surface, cause valves leakage.The butterfly valve of the most this structure has directivity, and medium can only be from valve
Designated ends flow into, if medium reversely flows into, sealing effectiveness is undesirable.
Utility model content
In order to overcome above technical deficiency, this utility model provides a kind of two way seal metallic seal butterfly valve.
This utility model provides a kind of two way seal metallic seal butterfly valve, and it includes valve body, valve rod and butterfly plate, described valve body
Being provided with groove between side and valve seat trim ring, arrange valve seat in described groove, described valve seat constitutes sealing with butterfly plate two ends and coordinates,
Gap is set between described valve seat and valve seat trim ring, described valve seat have under medium forward impact with valve seat trim ring constitute seal
The first state coordinated and the second state coordinated with butterfly plate composition sealing under medium reverse impact.
Described valve seat includes that fixed part, supporting part and sealing, described fixed part are fixedly mounted on valve body and valve seat pressure
Between circle, described sealing seals with butterfly plate and coordinates.
The sealing of described valve seat is inclined-plane, and one end that described butterfly plate coordinates with it is inclined-plane, and both constitute wedge surface and squeeze
Press-fit.
Between fixed part and the valve body of described valve seat, sealing gasket is set.
Described supporting part has the positive and negative groove that is symmetrical arranged to constitute.
Described valve seat trim ring is fixedly connected with the valve body by bolt.
Described valve seat is that metal material is made.
Utility model provides the benefit that: by arranging the valve seat that can realize two way seal so that it is at different directions
The part that the effect of impulsive force is lower and different constitutes sealing cooperation, it is achieved two way seal, it is ensured that butterfly valve does not haves showing of internal hemorrhage due to trauma
As.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model embodiment is described further:
As it is shown in figure 1, a kind of two way seal metallic seal butterfly valve, it includes valve body 2, valve rod 6 and butterfly plate 5, described valve body 2
Being provided with groove between side and valve seat trim ring 1, arrange valve seat 3 in described groove, described valve seat 3 constitutes sealing with butterfly plate 5 two ends
Coordinate, gap is set between described valve seat 3 and valve seat trim ring 1, described valve seat have under medium forward impact with valve seat trim ring 1
Constitute and seal the first state coordinated and constitute, with butterfly plate 5, the second state that sealing coordinates under medium reverse impact.
I.e. fluted between butterfly plate 5 and valve seat trim ring 1 and valve body, valve seat is placed in groove position, when valve rod direction is received
To pressure, can produce cylinder effect in pipeline, butterfly plate and valve seat can push valve seat trim ring to, and valve seat trim ring can produce thrust function,
Thus reach sealing effectiveness.When valve seat trim ring direction receives pressure, and pipeline medium can enter the gap of valve seat trim ring and valve seat, for
Valve seat provides thrust, valve seat is pushed to butterfly plate direction, allows valve seat combine closely with butterfly plate, forms sealing effectiveness, thus reaches double
To sealing.
And described valve seat 3 includes that fixed part, supporting part and sealing, described fixed part are fixedly mounted on valve body and valve seat
Between trim ring, described sealing seals with butterfly plate and coordinates.
The sealing of wherein said valve seat 3 is inclined-plane, and one end that described butterfly plate coordinates with it is inclined-plane, and both constitute wedge
Face extruding coordinates, and is coordinated by wedge surface extruding so that when in different directions stress, valve seat can extrude butterfly plate so that two
Form sealing between person to guarantee to seal between valve seat and butterfly plate.
Arranging sealing gasket 4 between fixed part and the valve body of described valve seat, this sealing gasket is used for guaranteeing between valve body and valve seat
Sealing, it is to avoid it produces leakage point.
Described supporting part has the positive and negative groove that is symmetrical arranged to constitute, and utilizes and two-way arranges groove so that valve seat and valve seat trim ring
Between form gap, and make the thickness of supporting part less than sealing and the thickness of fixed part so that this valve seat tool
There is certain elasticity, the gap between valve rod and dish plate can be made up.
Described valve seat trim ring is fixedly connected with the valve body by bolt 7, uses bolt to fix so that it overhauls convenient, permissible
Carry out the replacing of valve seat or sealing gasket.
Described valve seat is that metal material is made, and ensures the sealing property between butterfly plate and valve seat by the way of hard sealing,
Improve the service life of valve seat simultaneously.
Embodiment is not construed as restriction of the present utility model, any based on spirit improvements introduced of the present utility model,
All should be within protection domain of the present utility model.
Claims (7)
1. a two way seal metallic seal butterfly valve, it includes valve body, valve rod and butterfly plate, it is characterised in that: described valve body side
And being provided with groove between valve seat trim ring, arrange valve seat in described groove, described valve seat constitutes sealing with butterfly plate two ends and coordinates, described
Gap is set between valve seat and valve seat trim ring, described valve seat have under medium forward impact with valve seat trim ring constitute seal coordinate
The first state and constitute with butterfly plate under medium reverse impact and seal the second state of coordinating.
Two way seal metallic seal butterfly valve the most according to claim 1, it is characterised in that described valve seat include fixed part,
Supporting part and sealing, described fixed part is fixedly mounted between valve body and valve seat trim ring, and described sealing seals with butterfly plate
Coordinate.
Two way seal metallic seal butterfly valve the most according to claim 2, it is characterised in that the sealing of described valve seat is oblique
Face, and one end that described butterfly plate coordinates with it is inclined-plane, both constitute wedge surface extruding and coordinate.
Two way seal metallic seal butterfly valve the most according to claim 2, it is characterised in that the fixed part of described valve seat and valve
Sealing gasket is set between body.
Two way seal metallic seal butterfly valve the most according to claim 2, it is characterised in that described supporting part has positive antisymmetry
Arrange groove to constitute.
Two way seal metallic seal butterfly valve the most according to claim 1, it is characterised in that described valve seat trim ring passes through bolt
It is fixedly connected with the valve body.
Two way seal metallic seal butterfly valve the most according to claim 1, it is characterised in that described valve seat is metal material system
Become.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620618090.5U CN205715705U (en) | 2016-06-22 | 2016-06-22 | Two way seal metallic seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620618090.5U CN205715705U (en) | 2016-06-22 | 2016-06-22 | Two way seal metallic seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205715705U true CN205715705U (en) | 2016-11-23 |
Family
ID=57315309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620618090.5U Active CN205715705U (en) | 2016-06-22 | 2016-06-22 | Two way seal metallic seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205715705U (en) |
-
2016
- 2016-06-22 CN CN201620618090.5U patent/CN205715705U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |