CN102537381A - Two-way hard sealing butterfly valve - Google Patents
Two-way hard sealing butterfly valve Download PDFInfo
- Publication number
- CN102537381A CN102537381A CN201210030559XA CN201210030559A CN102537381A CN 102537381 A CN102537381 A CN 102537381A CN 201210030559X A CN201210030559X A CN 201210030559XA CN 201210030559 A CN201210030559 A CN 201210030559A CN 102537381 A CN102537381 A CN 102537381A
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- valve body
- valve
- valve seat
- rubber ring
- seat
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Abstract
The invention relates to a two-way hard sealing butterfly valve, which comprises a valve body, a valve seat, a butterfly plate, a sealing ring and a pressing plate. The sealing ring is mounted on the butterfly plate through the pressing plate, the inner wall of the valve body is provided with a rubber ring seat and the valve seat, a U-shaped rubber ring is mounted in an annular cavity formed by the rubber ring seat, the valve seat and the valve body, an annular sealed cavity is formed by a groove of the U-shaped rubber ring and the inner wall of the valve body, a channel is arranged at a position of the valve body corresponding to the annular sealed cavity, a connecting pipe communicated with the channel is arranged on the valve body, the space between the valve seat and the valve body is sealed by a seal ring with filled polytetrafluoroethylene, the space between the inner wall of the rubber ring seat and the valve seat is also sealed by a seal ring with filled polytetrafluoroethylene, an axial clearance is reserved on the valve seat along the inner wall of the valve body, and a guide pin and a guide seat in matched connection are fixedly connected with the valve seat and the valve body respectively. The two-way hard sealing butterfly valve has the advantages that water, hydraulic oil or nitrogen of a certain pressure is filled in the annular sealed cavity, and the pressed U-shaped rubber ring drives the valve seat to axially move, so that reliable two-way hard sealing is realized.
Description
Technical field
The present invention relates to a kind of butterfly valve, especially a kind of butterfly valve of realizing two-way hard seal.
Background technique
The three eccentric hard seal butterfly valves that present metallurgy industry generally uses, valve seat is fixedly connected or welds with valve body, when forward seals; Butterfly plate is out of shape to the direction that helps sealing under the effect of medium power; General forward favorable sealing property, when reverse pressure-bearing, pressure medium makes butterfly plate to the direction distortion that is unfavorable for sealing; The reverse pressure-bearing ability is relatively poor, can not realize two way sealed.
Summary of the invention
Of the present invention
PurposeJust be to provide a kind of two-way hard seal butterfly valve can not realize the deficiency of two way sealed to overcome existing three eccentric hard seal butterfly valves.
For realizing above-mentioned purpose, the present invention adopts as follows
Technological scheme:
A kind of two-way hard seal butterfly valve comprises valve body, valve seat, butterfly plate, seal ring, pressing plate, and valve seat is installed on the valve interior wall; Seal ring is installed on the butterfly plate through pressing plate, it is characterized in that: pasting valve seat at valve interior wall and be provided with the rubber ring support, constituting an annular chamber between rubber ring support, valve seat and valve body; The U-shaped rubber ring is installed in annular chamber; The groove of U-shaped rubber ring and valve interior wall constitute an annular seal space, and the position of corresponding annular seal space is provided with passage on valve body, on valve body, is provided with the connecting tube with this channel connection; Be provided with the filled polytetrafluoroethylene seal ring between rubber ring support inwall and the valve seat; Be provided with the filled polytetrafluoroethylene seal ring between valve seat and the valve body, valve seat leaves axial clearance along valve interior wall, on valve seat and valve body, is fixed with guide finger and the guide holder that cooperatively interacts and be connected respectively.
The beneficial effect that the present invention adopts technique scheme to produce is:
Water, hydraulic oil or nitrogen with certain pressure on architecture basics of the present invention are filled in the annular seal space; The U-shaped rubber ring of pressurized produces resiliently deformable promotion valve seat and moves axially; Thereby realize the reverse pressure-bearing sealing of butterfly valve; And the force value of annular seal space can suitably be adjusted artificially, and with the pressure independent of valve internal circulation medium, can fully guarantee the reverse sealability of butterfly valve like this.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the partial enlarged drawing of circle I part among Fig. 1;
Among the figure: 1. connecting tube; 2.U shape rubber ring; 3. filled polytetrafluoroethylene seal ring; 4. valve body; 5. valve seat; 6. rubber ring support; 7. seal ring; 8. pressing plate; 9 butterfly plates; 10. axial clearance; 11. guide holder; 12. guide finger; 13. filled polytetrafluoroethylene seal ring; 14. annular seal space; 21. dovetail hook; 41. passage.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explain:
Like Fig. 1, shown in Figure 2; A kind of two-way hard seal butterfly valve of the embodiment of the invention comprises valve body 4, valve seat 5, butterfly plate 9, seal ring 7, pressing plate 8, and valve seat 5 is installed on valve body 4 inwalls; Seal ring 7 is installed on the butterfly plate 9 through pressing plate 8; Be provided with rubber ring support 6 at valve body 4 inwalls, rubber ring support 6 contacts with valve seat 5 together with in the formed annular chamber of valve body 4 inwalls U-shaped rubber ring 2 being installed, and the edge of U-shaped rubber ring 2 is set to dovetail hook 21 shapes; U-shaped rubber ring 2 forms an annular seal space 14 with valve body 4 inwalls; The position of corresponding annular seal space 14 is provided with passage 41 on valve body 4, on valve body 4, is provided with the connecting tube 1 that is communicated with passage 41, adopts 13 sealings of filled polytetrafluoroethylene seal ring between rubber ring support 6 inwalls and the valve seat 5; The same filled polytetrafluoroethylene seal ring 3 that adopts seals between valve seat 5 and the valve body 4; Valve seat 5 leaves axial clearance 10 along valve body 4 inwalls, and the guide finger 12 that connects that cooperatively interacts is fixedly connected with valve body 4 with valve seat 5 respectively with guide holder 11, rubber ring support 6 left sides and valve body 4 welding.
When butterfly plate 9 bore positive pressure, annular seal space 14 need not pressurising, and the seal ring 7 with three eccentric structures screws in valve seat 5, and the resiliently deformable of bearing butterfly plate 9 generations of positive pressure helps the sealing of butterfly valve; When butterfly plate 9 bears backpressure; Through connecting tube 1 through passage 41 to annular seal space 14 pressurisings; U-shaped rubber ring 2 resiliently deformables of pressurized promote valve seat 5 and move axially to the right along valve body 4 inwalls; To remedy the resiliently deformable that butterfly plate 9 is produced, make valve seat 5 and the identical extruding of the sealing surface of seal ring 7, to guarantee the reverse pressure-bearing sealing of butterfly valve.The less filled polytetrafluoroethylene seal ring of friction factor is set respectively between valve seat 5 and the valve body 4 and between valve seat 5 and the rubber ring support 6 when guaranteeing sealability, is beneficial to moving axially of valve seat 5; Avoid valve seat 5 in use because vibrations produce circumferential the slip along valve body 4 inwalls with the guide finger 12 that valve seat 5 is fixedly connected with valve body 4 with guide holder 11 respectively; U-shaped rubber ring 2 set dovetail hooks 21 coincide with valve seat 5 formed dovetail grooves with rubber ring support 6 and assemble, and have strengthened the rigidity of U-shaped rubber ring 2 two edges, guarantee effective pressure bearing and seal of annular seal space 14.
Claims (1)
1. two-way hard seal butterfly valve; Comprise valve body (4), valve seat (5), butterfly plate (9), seal ring (7), pressing plate (8); Valve seat (5) is installed on valve body (4) inwall; Seal ring (7) is installed on the butterfly plate (9) through pressing plate (8), it is characterized in that: pasting valve seat (5) at valve body (4) inwall and be provided with rubber ring support (6), constituting an annular chamber between rubber ring support (6), valve seat (5) and valve body (4); U-shaped rubber ring (2) is installed in annular chamber; The groove of U-shaped rubber ring (2) and valve body (4) inwall constitute an annular seal space (14), and the position of going up corresponding annular seal space (14) at valve body (4) is provided with passage (41), on valve body (4), is provided with the connecting tube (1) that is communicated with passage (41); Be provided with filled polytetrafluoroethylene seal ring (13) between rubber ring support (6) inwall and the valve seat (5); Be provided with filled polytetrafluoroethylene seal ring (3) between valve seat (5) and the valve body (4), valve seat (5) leaves axial clearance (10) along valve body (4) inwall, is fixed with guide finger (12) and the guide holder (11) that cooperatively interacts and be connected respectively at valve seat (5) and valve body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210030559 CN102537381B (en) | 2012-02-13 | 2012-02-13 | Two-way hard sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210030559 CN102537381B (en) | 2012-02-13 | 2012-02-13 | Two-way hard sealing butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102537381A true CN102537381A (en) | 2012-07-04 |
| CN102537381B CN102537381B (en) | 2013-10-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210030559 Active CN102537381B (en) | 2012-02-13 | 2012-02-13 | Two-way hard sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102537381B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818041A (en) * | 2012-09-18 | 2012-12-12 | 无锡杰尔压缩机有限公司 | Combined sealing ring structure of rhomboic valve |
| CN104295754A (en) * | 2014-09-09 | 2015-01-21 | 江苏远望仪器有限公司 | Butterfly valve with hydraulic seal structure |
| CN104964048A (en) * | 2015-07-21 | 2015-10-07 | 河北长宏阀门有限公司 | Anti-locking high-temperature seal butterfly valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4032108A (en) * | 1975-09-17 | 1977-06-28 | Kintner Edwin K | Butterfly valve assembly |
| CN2563376Y (en) * | 2002-08-21 | 2003-07-30 | 河南上蝶阀门股份有限公司 | Three dimension eccentric full metal sealed butterfly valve |
| CN101165375A (en) * | 2006-10-19 | 2008-04-23 | 南通市神通特种阀门工程技术研究中心有限公司 | Two-way hard seal butterfly valve |
| FR2937110A1 (en) * | 2008-10-10 | 2010-04-16 | Jacques Roland Vigroux | Pipe's quarter-turn valve closing device i.e. gate, for use in e.g. hydrocarbon industry, has semi-shell type butterfly valve including spherical inner face and spherical outer face, where faces are made of single component |
| CN202561074U (en) * | 2012-02-13 | 2012-11-28 | 石特阀门股份有限公司 | Bidirectional rigid sealing butterfly valve |
-
2012
- 2012-02-13 CN CN 201210030559 patent/CN102537381B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4032108A (en) * | 1975-09-17 | 1977-06-28 | Kintner Edwin K | Butterfly valve assembly |
| CN2563376Y (en) * | 2002-08-21 | 2003-07-30 | 河南上蝶阀门股份有限公司 | Three dimension eccentric full metal sealed butterfly valve |
| CN101165375A (en) * | 2006-10-19 | 2008-04-23 | 南通市神通特种阀门工程技术研究中心有限公司 | Two-way hard seal butterfly valve |
| FR2937110A1 (en) * | 2008-10-10 | 2010-04-16 | Jacques Roland Vigroux | Pipe's quarter-turn valve closing device i.e. gate, for use in e.g. hydrocarbon industry, has semi-shell type butterfly valve including spherical inner face and spherical outer face, where faces are made of single component |
| CN202561074U (en) * | 2012-02-13 | 2012-11-28 | 石特阀门股份有限公司 | Bidirectional rigid sealing butterfly valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818041A (en) * | 2012-09-18 | 2012-12-12 | 无锡杰尔压缩机有限公司 | Combined sealing ring structure of rhomboic valve |
| CN104295754A (en) * | 2014-09-09 | 2015-01-21 | 江苏远望仪器有限公司 | Butterfly valve with hydraulic seal structure |
| CN104964048A (en) * | 2015-07-21 | 2015-10-07 | 河北长宏阀门有限公司 | Anti-locking high-temperature seal butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102537381B (en) | 2013-10-30 |
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