CN204140923U - A kind of valve seat self-regulation structure of plate valve - Google Patents
A kind of valve seat self-regulation structure of plate valve Download PDFInfo
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- CN204140923U CN204140923U CN201420450682.1U CN201420450682U CN204140923U CN 204140923 U CN204140923 U CN 204140923U CN 201420450682 U CN201420450682 U CN 201420450682U CN 204140923 U CN204140923 U CN 204140923U
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- valve
- valve seat
- flashboard
- rectangle
- groove
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Abstract
The utility model relates to a kind of valve seat self-regulation structure of plate valve, valve seat is respectively provided with a rectangle groove in the one end near flashboard, a rectangle valve seat insert is studded with in this rectangle groove, in the middle part of one end bottom rectangle groove of this valve seat insert, be shaped with the dovetail groove of an annular, in this dovetail groove, be installed with an O shape circle.The O shape coil structures that the utility model adopts can according to the thrust size of medium to valve seat, dilatation freely, thus regulating action is played to the sealing between valve seat insert and flashboard, well can also ensure the sealing between valve seat insert and valve seat simultaneously.The utility model structure is simple, design science, and sealability is reliable, is easy to processing, can be widely used in various occasion.
Description
Technical field
The utility model belongs to valve field, especially a kind of valve seat self-regulation structure of plate valve.
Background technique
At present; the sealing configuration of most plate valve is the rectangular seal studding with one RPTFE on valve seat, by rectangular seal, is formed seal with flashboard; and when inlaying seal ring; all by coordinating, with press machine, seal ring being pressed in the seal groove of valve seat, this method; after often there will be seal ring press-in; air in groove does not drain only or inclined situation pressed by seal ring, thus causes valve when low pressure operating mode is closed, and leaks between seal ring and valve seat.
Prior art Problems existing and shortcoming are: the valve seat construction of existing structure does not have can the structure of dilatation freely, lacks and regulates adaptive capacity, thus cannot play regulating action to the sealing between valve seat insert and flashboard.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides that a kind of structure is simple, waterproof and dustproof, changes convenient, to be convenient to the plate valve processed valve seat self-regulation structure.
The utility model solves its technical problem and takes following technological scheme to realize:
A kind of valve seat self-regulation structure of plate valve, comprise valve body, valve gap, valve rod, flashboard, valve seat and rectangle valve seat insert, valve body and valve gap are coaxially fixedly mounted with, in valve gap, longitudinal Driven by Coaxial is provided with valve rod, the lower end of valve rod is coaxially fixedly mounted with flashboard in valve body, this flashboard is all provided with a valve seat in the both sides in valve channel direction, these two valve seats are symmetrical arranged, it is characterized in that: described valve seat is respectively provided with a rectangle groove in the one end near flashboard, a rectangle valve seat insert is studded with in this rectangle groove, the dovetail groove of an annular is shaped with in the middle part of one end bottom rectangle groove of this valve seat insert, an O shape circle is installed with in this dovetail groove.
And the radial surface of contact of described valve seat 5 afterbody and valve body is provided with spring eye, and this spring eye is built with Compress Spring.
Advantage of the present utility model and good effect are:
1, this structure is in valve seat insert one end near valve seat rectangle groove, be installed with an O shape circle, O shape is utilized to enclose elasticity, good toughness, the feature that seal pressure is low, a resealing is defined between valve seat insert and valve seat, efficiently avoid in the past in low-pressure gas operating mode from the situation of leaking between seal ring and valve seat, the sealability making valve is more reliable, uses safer.
2, this structure is provided with spring eye on the radial surface of contact of valve seat afterbody and valve body, this spring eye is built with Compress Spring, when flashboard cuts out and open, according to spring and medium to the thrust size of valve seat, O shape circle in seal ring can produce dilatation, impels valve seat insert to produce small floating, plays the effect of fine setting, thus effectively raise the sealability of valve, reduce the incipient opening force square of valve.
3, the O shape coil structures that the utility model adopts can according to the thrust size of medium to valve seat, dilatation freely, thus regulating action is played to the sealing between valve seat insert and flashboard, well can also ensure the sealing between valve seat insert and valve seat simultaneously.The utility model structure is simple, design science, and sealability is reliable, is easy to processing, can be widely used in various occasion.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment middle plateform gate valve overall schematic;
Fig. 2 is the A place partial enlargement structural representation of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, also by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of valve seat self-regulation structure of plate valve, comprise valve body 1, valve gap 2, valve rod 3, flashboard 4, valve seat 5 and rectangle valve seat insert 6, valve body and valve gap are coaxially fixedly mounted with, in valve gap, longitudinal Driven by Coaxial is provided with valve rod, by packing seal (in figure non-label) between described valve rod and valve gap, the lower end of valve rod is coaxially fixedly mounted with flashboard in valve body, and this flashboard is all provided with a valve seat in the both sides in valve channel direction, and these two valve seats are symmetrical arranged.
Innovative point of the present utility model is:
1, described valve seat 5 is respectively provided with a rectangle groove in the one end near flashboard 4, the rectangle valve seat insert 6 that a material is fluoroplastic is studded with in this rectangle groove, the dovetail groove of an annular is shaped with in the middle part of this valve seat insert 6 one end bottom rectangle groove, an O shape circle 7 is installed with in this dovetail groove, O shape is utilized to enclose good springiness, good toughness, the feature that seal pressure is low, a resealing is defined between valve seat insert and valve seat, efficiently avoid in the past in low-pressure gas operating mode from the situation of leaking between seal ring and valve seat, make the sealability of valve more reliable, use safer.。
2, the radial surface of contact of described valve seat afterbody and valve body is provided with spring eye, this spring eye is built with Compress Spring 8, when flashboard cuts out and open, according to spring and medium to the thrust size of valve seat, O shape circle in seal ring can produce dilatation, impels valve seat insert to produce small floating, plays the effect of fine setting, thus effectively raise the sealability of valve, reduce the incipient opening force square of valve.
Described O shape circle can according to spring and medium to the thrust size of valve seat, dilatation freely, thus plays regulating action to the sealing between valve seat insert and flashboard, well can also ensure the sealing between valve seat insert and valve seat simultaneously.
Claims (2)
1. the valve seat self-regulation structure of a plate valve, comprise valve body, valve gap, valve rod, flashboard, valve seat and rectangle valve seat insert, valve body and valve gap are coaxially fixedly mounted with, in valve gap, longitudinal Driven by Coaxial is provided with valve rod, the lower end of valve rod is coaxially fixedly mounted with flashboard in valve body, this flashboard is all provided with a valve seat in the both sides in valve channel direction, these two valve seats are symmetrical arranged, it is characterized in that: described valve seat is respectively provided with a rectangle groove in the one end near flashboard, a rectangle valve seat insert is studded with in this rectangle groove, the dovetail groove of an annular is shaped with in the middle part of one end bottom rectangle groove of this valve seat insert, an O shape circle is installed with in this dovetail groove.
2. the valve seat self-regulation structure of plate valve according to claim 1, is characterized in that: the radial surface of contact of described valve seat afterbody and valve body is provided with spring eye, and this spring eye is built with Compress Spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420450682.1U CN204140923U (en) | 2014-08-11 | 2014-08-11 | A kind of valve seat self-regulation structure of plate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420450682.1U CN204140923U (en) | 2014-08-11 | 2014-08-11 | A kind of valve seat self-regulation structure of plate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204140923U true CN204140923U (en) | 2015-02-04 |
Family
ID=52417608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420450682.1U Active CN204140923U (en) | 2014-08-11 | 2014-08-11 | A kind of valve seat self-regulation structure of plate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204140923U (en) |
-
2014
- 2014-08-11 CN CN201420450682.1U patent/CN204140923U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |