CN205136625U - Three off -centre high -pressure butterfly valve sealed firmly - Google Patents
Three off -centre high -pressure butterfly valve sealed firmly Download PDFInfo
- Publication number
- CN205136625U CN205136625U CN201520861617.2U CN201520861617U CN205136625U CN 205136625 U CN205136625 U CN 205136625U CN 201520861617 U CN201520861617 U CN 201520861617U CN 205136625 U CN205136625 U CN 205136625U
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- Prior art keywords
- valve
- type circle
- plate
- pressure
- sealing washer
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- Expired - Fee Related
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Abstract
The utility model discloses a three off -centre high -pressure butterfly valve sealed firmly, including the valve body, integrative formation the valve body in the disk seat, and valve plate, the valve plate package rubbing board body with set up at plate body ring week and the sealing washer fixed by clamping ring and plate body centre gripping the plate body with the contact surface of sealing washer on be provided with the ring recess the ring recess in be provided with C type circle and hold the sealing washer with the top. The utility model discloses a triple offset butterfly valve sets up C type circle at the sealing washer back, when pressure medium is used in on the valve plate, and C type circle, plate body, sealing washer and pretension bolt the stress, pressure is high more, and the elastic deformation ability of C type circle is strong more, and the pretension specific pressure of exerting the sealed face between sealing washer and valve plate is big more, has surpassed the required sealed specific pressure of valve far away, is enough to guarantee the valve seal under the high pressure.
Description
Technical field
The utility model relates to technical field of valve manufacturing, particularly relates to the hard sealed high pressure butterfly valve of a kind of three eccentricity.
Background technique
Three eccentric metal hard sealed butterfly damper at present seen by us also exists the sealing surface shape of valve body sealing surface and seal ring in real work, angle is not mated, zero leakage cannot be accomplished, multi-layer sealing ring washes away by medium front, the problem such as to leak during valve reverse pressure-bearing.Original three eccentric butterfly valve adopts multi-level (stainless steel+graphite) as seal ring, but original three eccentric butterfly valve to exist when valve wide open at many levels not resistance to erosion, washes away degradation shortcoming under rear sealing effect for a long time.Also the producer had directly seals or built-up welding sealing surface on valve plate by bulk metal, but sealing effect is undesirable.
For improving sealing effect, Chinese patent CN102425677 discloses a kind of three eccentric metal hard sealed butterfly damper, comprise valve plate, valve body, seal ring, pressing plate and valve rod, described valve rod axis and relative eccentric between the valve plate side being connected valve rod, and and relative eccentric between valve axis, described seal ring is arranged in the seal groove of valve plate and pressing plate pressing, and the sealing surface of the seal ring of contact pressing plate is provided with the U-groove bevel of annular.
Although above-mentioned patent can improve resistance to erosion to a certain extent, facing under hyperbaric environment, still inevitably there is leak case.
Model utility content
The purpose of this utility model is the technological deficiency for existing in prior art, and provides a kind of three eccentricity hard sealed high pressure butterfly valve.
The technological scheme adopted for realizing the purpose of this utility model is:
The hard sealed high pressure butterfly valve of a kind of three eccentricity, comprise valve body, be integrally formed in the valve seat in described valve body, and valve plate, described valve plate comprises plate body and is arranged on plate body ring week and the seal ring gripped by pressure ring and plate body, the surface of contact of described plate body and described seal ring is provided with ring groove, in described ring groove, is provided with C type circle to hold seal ring.
Described C type circle is made up of metal sheet.
The surface overlaying of described valve seat has heat-proof corrosion resistant to lose alloy material.
Described heat-proof corrosion resistant erosion alloy material is high carbon high chromium alloy.
The cross section of described ring groove is that rectangle is to allow C type circle generation deformation.
Compared with prior art, the beneficial effects of the utility model are:
Three eccentric butterfly valve of the present utility model, C type circle is set at seal ring back, when pressure medium acts on valve plate, C type circle, plate body, seal ring and pretension bolt entirety are stressed, pressure is higher, and the elastic deformability of C type circle is stronger, and the pretension specific pressure applied the sealing surface between seal ring and valve plate is larger, considerably beyond the seal pressure needed for valve, be enough to the valve seal under guarantee high pressure.
Accompanying drawing explanation
Figure 1 shows that the structural representation of the hard sealed high pressure butterfly valve of three eccentricity of the present utility model;
Figure 2 shows that close-up schematic view.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As depicted in figs. 1 and 2, the hard sealed high pressure butterfly valve of three eccentricity of the present utility model comprises valve body 1, be integrally formed in the valve seat 11 in described valve body, and valve plate 2, described valve plate is comprised plate body 21 and is arranged on plate body ring week and the seal ring 23 gripped by the pressure ring 22 be fixed on by pretension bolt 24 on plate body and plate body, it is rectangle that the surface of contact of described plate body and described seal ring is provided with cross section, be preferably foursquare ring groove 25, in described ring groove, be provided with C type circle 26 to hold seal ring.Wherein, described C type circle is made up of metal sheet and opening is arranged in ring groove outwardly, wherein, refers to relative valve rod outward, i.e. the direction that deviate from vertical with the medial axis of valve body.
Three eccentric butterfly valve of the present utility model, C type circle is set at seal ring back, when pressure medium acts on valve plate, C type circle 26, plate body 21, seal ring 23 and pretension bolt 24 are overall stressed, pressure is higher, and the elastic deformability of C type circle 26 is stronger, and the pretension specific pressure applied the sealing surface between seal ring and valve plate is larger, considerably beyond the seal pressure needed for valve, be enough to the valve seal under guarantee high pressure.
Further, the surface overlaying of described valve seat has heat-proof corrosion resistant to lose alloy material, as high carbon high chromium alloy.Adopt heat-proof corrosion resistant erosion alloy material, improve its usability, and ensure mass stability when using.
The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. the hard sealed high pressure butterfly valve of three eccentricity, it is characterized in that, comprise valve body, be integrally formed in the valve seat in described valve body, and valve plate, described valve plate comprises plate body and is arranged on plate body ring week and the seal ring gripped by pressure ring and plate body, the surface of contact of described plate body and described seal ring is provided with ring groove, is provided with C type circle to hold seal ring in described ring groove.
2. the hard sealed high pressure butterfly valve of three eccentricity as claimed in claim 1, it is characterized in that, described C type circle is made up of metal sheet.
3. the hard sealed high pressure butterfly valve of three eccentricity as claimed in claim 1, is characterized in that, the surface overlaying of described valve seat has heat-proof corrosion resistant to lose alloy material.
4. the hard sealed high pressure butterfly valve of three eccentricity as claimed in claim 3, is characterized in that, described heat-proof corrosion resistant erosion alloy material is high carbon high chromium alloy.
5. the hard sealed high pressure butterfly valve of three eccentricity as claimed in claim 1, it is characterized in that, the cross section of described ring groove is that rectangle is to allow C type circle generation deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520861617.2U CN205136625U (en) | 2015-10-29 | 2015-10-29 | Three off -centre high -pressure butterfly valve sealed firmly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520861617.2U CN205136625U (en) | 2015-10-29 | 2015-10-29 | Three off -centre high -pressure butterfly valve sealed firmly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205136625U true CN205136625U (en) | 2016-04-06 |
Family
ID=55622420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520861617.2U Expired - Fee Related CN205136625U (en) | 2015-10-29 | 2015-10-29 | Three off -centre high -pressure butterfly valve sealed firmly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205136625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864439A (en) * | 2016-06-03 | 2016-08-17 | 江南阀门有限公司 | Regulating type metal sealed butterfly valve |
-
2015
- 2015-10-29 CN CN201520861617.2U patent/CN205136625U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864439A (en) * | 2016-06-03 | 2016-08-17 | 江南阀门有限公司 | Regulating type metal sealed butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20181029 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |