CN207598959U - A kind of two-way floating type PTFE seal structure suitable for double eccentric butterfly valve - Google Patents
A kind of two-way floating type PTFE seal structure suitable for double eccentric butterfly valve Download PDFInfo
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- CN207598959U CN207598959U CN201721249420.9U CN201721249420U CN207598959U CN 207598959 U CN207598959 U CN 207598959U CN 201721249420 U CN201721249420 U CN 201721249420U CN 207598959 U CN207598959 U CN 207598959U
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- ptfe seal
- circle
- butterfly valve
- seal circle
- floating type
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Abstract
The utility model discloses a kind of two-way floating type PTFE seal structure suitable for double eccentric butterfly valve, it includes：PTFE seal circle, the lip circle body that there is annular groove for one；O-ring is embedded in the annular groove.Its advantage is：It can realize two way seal, PTFE seal circle is avoided to be extruded seal groove, it is simple in structure, facilitate installation, close property is reliable, easy to repair.
Description
Technical field
The utility model is related to valve technology fields, and in particular to a kind of two-way floating type suitable for double eccentric butterfly valve
PTFE seal structure.
Background technology
With the development of society, requirement of all trades and professions to valve, with being gradually increased, one-way sealing, which has been unable to meet, to be made
Use demand.Traditional two way seal double eccentric butterfly valve is generally substituted using three eccentricity hard seal butterfly valve, and manufacture is cumbersome, and the period is long,
It is of high cost, and two-way close property is unreliable, maintenance difficult.
Utility model content
The purpose of this utility model is to provide a kind of two-way floating type PTFE seal structure suitable for double eccentric butterfly valve,
It can realize two way seal, PTFE seal circle is avoided to be extruded seal groove, it is simple in structure, facilitate installation, close property is reliable, is convenient for
Repair.
In order to achieve the above object, the utility model is achieved through the following technical solutions：
A kind of two-way floating type PTFE seal structure suitable for double eccentric butterfly valve, it is characterized in that, comprising：
PTFE seal circle, the lip circle body that there is annular groove for one；
O-ring is embedded in the annular groove.
The above-mentioned two-way floating type PTFE seal structure suitable for double eccentric butterfly valve, wherein：
The PTFE seal circle includes upper lip, lower lip and arc-shaped transition part, and the annular groove of PTFE seal circle is non-
Cladding O-ring completely.
The above-mentioned two-way floating type PTFE seal structure suitable for double eccentric butterfly valve, wherein：
The inside of the arc-shaped transition part vertical section of the PTFE seal circle is in a major arc shape symmetrical above and below；
The O-ring is embedded in the arc-shaped transition part.
The above-mentioned two-way floating type PTFE seal structure suitable for double eccentric butterfly valve, wherein：
The upper lip of the PTFE seal circle is identical with lower lip thickness.
The above-mentioned two-way floating type PTFE seal structure suitable for double eccentric butterfly valve, wherein：
The upper lip end-boss of the PTFE seal circle forms empennage on one, and setting one is fallen at outer circle of empennage on this
Angle；
The lower lip end-boss of the PTFE seal circle forms empennage, and the lower empennage is whole plane.
The utility model has the following advantages compared with prior art：It can realize two way seal, avoid PTFE seal circle
Seal groove is extruded, it is simple in structure, facilitate installation, close property is reliable, easy to repair.
Description of the drawings
Fig. 1 is the example structure schematic diagram of the utility model.
Specific embodiment
Below in conjunction with attached drawing, by the way that a preferable specific embodiment is described in detail, the utility model is done and is further explained
It states.
As shown in Figure 1, a kind of two-way floating type PTFE seal structure suitable for double eccentric butterfly valve, it includes：PTFE is close
Seal, the lip circle body that there is annular groove for one；O-ring 7 is embedded in the annular groove.
The PTFE seal circle includes upper lip 1, lower lip 2 and arc-shaped transition part 3, the annular groove of PTFE seal circle
Non-fully coat O-ring 2.In the present embodiment, 2 diameter 4.5mm of O-ring, PTFE seal circle thickness 1.5mm, then sealing surface formed
The semi circular surface of a diameter of 7.5mm with valve aperture, the increase of pressure, can adjust the size of O-ring 2 and PTFE seal circle section,
When so that the sealing surface no matter is squeezed from upside or downside, it can float, obtain suitable two way seal effect.I.e. sealing ring by
To downward pressure fixing, gap 8 is eliminated, and O-ring 3 is by outside extruding, when the sealing surface in arc-shaped 3 outside of transition part
When being squeezed, PTFE seal circle and O-ring 2 interact, and realize the floating along compression direction.Sealing surface can bear two kinds by
It presses direction and sealing surface floats along two kinds of directions and two-way floating.
The inside of 3 vertical section of arc-shaped transition part of the PTFE seal circle is in a major arc shape symmetrical above and below；It is described
O-ring 2 be embedded in the arc-shaped transition part 3.
The upper lip 1 of the PTFE seal circle is identical with 2 thickness of lower lip.
1 end-boss of upper lip of the PTFE seal circle forms empennage on one, and sets one at outer circle of empennage on this
When being fixed, upper empennage raised position will form cross section as length of side 3mm etc. for chamfering 5, size 3mm × 45 °, therefore sealing ring
One circle avoiding space of side right angled triangle, avoids PTFE seal circle from being extruded seal groove；The lower lip end of the PTFE seal circle
End convexes to form empennage 4, and the lower empennage 4 is whole plane 6, realizes flat seal.
In conclusion a kind of two-way floating type PTFE seal structure suitable for double eccentric butterfly valve of the utility model, is realized
A kind of two way seal.Simple in structure, easy for installation, close property is reliable, easy to repair.
Although the content of the utility model is discussed in detail by above preferred embodiment, but it should be appreciated that on
The description stated is not considered as the limitation to the utility model.After those skilled in the art have read the above, for
A variety of modifications and substitutions of the utility model all will be apparent.Therefore, the scope of protection of the utility model should be by appended
Claim limit.
Claims (2)
1. a kind of two-way floating type PTFE seal structure suitable for double eccentric butterfly valve, which is characterized in that include：
PTFE seal circle, the lip circle body that there is annular groove for one；
O-ring is embedded in the annular groove；
The PTFE seal circle includes upper lip, lower lip and arc-shaped transition part, and the annular groove of PTFE seal circle is non-fully
Coat O-ring；
The inside of the arc-shaped transition part vertical section of the PTFE seal circle is in a major arc shape symmetrical above and below；
The O-ring is embedded in the arc-shaped transition part；
The upper lip of the PTFE seal circle is identical with lower lip thickness.
2. it is suitable for the two-way floating type PTFE seal structure of double eccentric butterfly valve as described in claim 1, it is characterised in that：
The upper lip end-boss of the PTFE seal circle forms empennage on one, and sets a chamfering at outer circle of empennage on this；
The lower lip end-boss of the PTFE seal circle forms empennage, and the lower empennage is whole plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721249420.9U CN207598959U (en) | 2017-09-27 | 2017-09-27 | A kind of two-way floating type PTFE seal structure suitable for double eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721249420.9U CN207598959U (en) | 2017-09-27 | 2017-09-27 | A kind of two-way floating type PTFE seal structure suitable for double eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207598959U true CN207598959U (en) | 2018-07-10 |
Family
ID=62755620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721249420.9U Active CN207598959U (en) | 2017-09-27 | 2017-09-27 | A kind of two-way floating type PTFE seal structure suitable for double eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207598959U (en) |
-
2017
- 2017-09-27 CN CN201721249420.9U patent/CN207598959U/en active Active
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| GR01 | Patent grant |