CN201145047Y - Bias T-shaped large caliber butterfly valve rubber seal ring - Google Patents
Bias T-shaped large caliber butterfly valve rubber seal ring Download PDFInfo
- Publication number
- CN201145047Y CN201145047Y CNU2007201852911U CN200720185291U CN201145047Y CN 201145047 Y CN201145047 Y CN 201145047Y CN U2007201852911 U CNU2007201852911 U CN U2007201852911U CN 200720185291 U CN200720185291 U CN 200720185291U CN 201145047 Y CN201145047 Y CN 201145047Y
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- outer ring
- section
- ring part
- ring portion
- shape
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Abstract
A rubber sealing ring of a bias T-shaped large-caliber butterfly valve comprises an inner ring part and an outer ring part which are vertically connected with each other. The inner ring part is a rectangular ring, and the outer ring part is a D-shaped ring. The symmetric axis of the rectangular cross section of the inner ring part and the mean line of the D-shaped cross section of the outer ring part are on the same straight line. The external circumferential face of the D-shaped cross section of the outer ring part is a sealing lip of an arc face, one side length of the D-shaped cross section of the outer ring part is 25-30 percent of the other side length of the D-shaped cross section of the outer ring part, the distance between the circular center of the sectional arc of the arc face of the external circumferential face and the symmetric axis is 5-10 percent of the distance between the right side and the left side of the outer ring part, and the diameter of the arc face of the sealing lip is 70-75 percent of the distance between the right side and the left side of the outer ring part. The utility model has a greater curvature of the sealing lip, a narrower sealing belt in contact with the sealing ring of the valve body, the sealing lip with good following property, a smaller switching turning force as we as good sealing performance. The relative motion between a butterfly plate rubber sealing ring and the valve body sealing ring can not interfere during the turning process of the butterfly plate.
Description
Technical field
The utility model relates to a kind of butterfly plate rubber seal of large-diameter butterfly valve, particularly a kind of section configuration of large-diameter butterfly valve butterfly plate rubber seal.
Background technique
Butterfly valve is to rotate in the scopes of 90 degree by rotary valve rod drive butterfly plate to realize the opening and closing of butterfly valve.The butterfly valve that bore is 500 millimeters～6000 millimeters is commonly referred to as large-diameter butterfly valve.The sealing pair that butterfly plate seal ring that useful rubber is made between the valve body of large-diameter butterfly valve and the valve plate and metal valve seals are formed, when butterfly plate is closed, rubber seal has certain magnitude of interference to guarantee initial sealing, under the pressure medium effect, rubber seal produces resiliently deformable, produces enough seal pressures and reaches sealing.Sealing is the key of butterfly valve, the quality of sealability depends primarily on the structure of rubber seal, butterfly plate rubber seal for large-diameter butterfly valve not only requires good seal performance, also requires butterfly plate relative movement between butterfly plate rubber seal and the valve seals in rotation process not interfere.In the prior art, it is the butterfly plate rubber seal of T shape that large-diameter butterfly valve has section, section is that the butterfly plate rubber seal of T shape has continuous annular inner portion and outer ring portion, annular inner portion is a rectangular ring, outer ring portion is a D shape ring, the width of annular inner portion is greater than the width of outer ring portion, the left side of outer ring portion D shape section, the right appearance etc., the outer peripheral surface of outer ring portion is the seal lip of semicircle cambered surface, the left side of the diameter of seal lip semicircle cambered surface and outer ring portion D shape section, distance between the right equates, the large-diameter butterfly valve section is that the section T shape of the butterfly plate rubber seal of T shape is symmetrical, the symmetry axis of the symmetry axis of annular inner portion rectangular cross section and outer ring portion D shape section is on same straight line, and the center of circle of the section circular arc of excircle semicircle cambered surface is on symmetry axis.The butterfly plate rubber seal that this large-diameter butterfly valve section is a T shape is because section T shape is symmetrical, the curvature of seal lip is less, with the contacted sealing strip broad of valve seals, the seal lip servo-actuated is bad, the switch moment of rotation is bigger, sealability is not fine, and butterfly plate relative movement between butterfly plate rubber seal and the valve seals in rotation process interferes easily.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned deficiency, it is not very big proposing a kind of good seal performance, moment of rotation, and the butterfly plate large-diameter butterfly valve butterfly plate that the relative movement between butterfly plate rubber seal and the valve seals does not interfere in rotation process is with inclined to one side T shape large-diameter butterfly valve rubber seal.
The utility model is realized with the following method.
T shape large-diameter butterfly valve rubber seal has vertical annular inner portion and the outer ring portion that links to each other partially, annular inner portion is a rectangular ring, outer ring portion is a D shape ring, the width of outer ring portion be annular inner portion width 60%～65%, the height of annular inner portion is 65%～70% of an outer ring portion height, the center line of the symmetry axis of annular inner portion rectangular cross section and outer ring portion D shape section is on same straight line, the outer peripheral surface of outer ring portion D shape ring is the seal lip of arc surface, a length of side of outer ring portion D shape section is 25%～30% of another length of side, the center of circle of the section circular arc of excircle arc surface and the distance of symmetry axis are the left sides of outer ring portion D shape section, the right between distance 5%～10%, the diameter of seal lip arc surface is the left side of outer ring portion D shape section, the right between distance 70%～75%.
Section of the present utility model is asymmetric inclined to one side T shape, a length of side of outer ring portion D shape section is greater than another length of side, the center of circle of the section circular arc of excircle arc surface and the distance of symmetry axis are the left sides of outer ring portion D shape section, the right between distance 5%～10%, the diameter of seal lip arc surface is the left side of outer ring portion D shape section, the right between distance 70～75%, the curvature of seal lip is bigger, narrower with the contacted sealing strip of valve seals, the seal lip servo-actuated is good, the switch moment of rotation is less, the relative movement between butterfly plate rubber seal and the valve seals in rotation process of good seal performance, butterfly plate can not interfere.
Below in conjunction with accompanying drawing, the utility model is further described.
Description of drawings
Fig. 1 is that the master of a kind of inclined to one side T shape large-diameter butterfly valve rubber seal that proposes according to invention scheme of the present utility model looks schematic representation;
Fig. 2 is the A-A section enlarged diagram of Fig. 1.
Embodiment
Fig. 1, among Fig. 2, T shape large-diameter butterfly valve rubber seal has vertical annular inner portion 1 and the outer ring portion 2 that links to each other partially, annular inner portion is a rectangular ring, outer ring portion is a D shape ring, the width q of outer ring portion be annular inner portion width m 60%～65%, the height n of annular inner portion is 65%～70% of the high p of outer ring portion, the center line of the symmetry axis of annular inner portion rectangular cross section and outer ring portion D shape section is on same straight line L, the outer peripheral surface of outer ring portion D shape ring is the seal lip 3 of arc surface, a limit a length of outer ring portion D shape section is 25%～30% of another limit b length, the center of circle of the section circular arc of excircle arc surface and symmetry axis be the left side of outer ring portion D shape section apart from d, apart from 5%～10% of q, the diameter of seal lip arc surface is the left side of outer ring portion D shape section between the right, the right between apart from 70%～75% of q.
Claims (1)
1. inclined to one side T shape large-diameter butterfly valve rubber seal, vertical annular inner portion and the outer ring portion that links to each other arranged, annular inner portion is a rectangular ring, outer ring portion is a D shape ring, it is characterized in that: the width of outer ring portion be annular inner portion width 60%～65%, the height of annular inner portion is 65%～70% of an outer ring portion height, the center line of the symmetry axis of annular inner portion rectangular cross section and outer ring portion D shape section is on same straight line, the outer peripheral surface of outer ring portion D shape ring is the seal lip of arc surface, a length of side of outer ring portion D shape section is 25%～30% of another length of side, the center of circle of the section circular arc of excircle arc surface and the distance of symmetry axis are the left sides of outer ring portion D shape section, the right between distance 5%～10%, the diameter of seal lip arc surface is the left side of outer ring portion D shape section, the right between distance 70%～75%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201852911U CN201145047Y (en) | 2007-12-28 | 2007-12-28 | Bias T-shaped large caliber butterfly valve rubber seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201852911U CN201145047Y (en) | 2007-12-28 | 2007-12-28 | Bias T-shaped large caliber butterfly valve rubber seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201145047Y true CN201145047Y (en) | 2008-11-05 |
Family
ID=40081924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201852911U Expired - Fee Related CN201145047Y (en) | 2007-12-28 | 2007-12-28 | Bias T-shaped large caliber butterfly valve rubber seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201145047Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005827A (en) * | 2019-01-22 | 2019-07-12 | 江苏远望仪器集团有限公司 | Sealing structure is pasted applied to the butterfly valve lip type in pipeline |
-
2007
- 2007-12-28 CN CNU2007201852911U patent/CN201145047Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005827A (en) * | 2019-01-22 | 2019-07-12 | 江苏远望仪器集团有限公司 | Sealing structure is pasted applied to the butterfly valve lip type in pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 Termination date: 20100128 |