CN103047431A - Balanced type high-performance butterfly valve - Google Patents
Balanced type high-performance butterfly valve Download PDFInfo
- Publication number
- CN103047431A CN103047431A CN2011103210417A CN201110321041A CN103047431A CN 103047431 A CN103047431 A CN 103047431A CN 2011103210417 A CN2011103210417 A CN 2011103210417A CN 201110321041 A CN201110321041 A CN 201110321041A CN 103047431 A CN103047431 A CN 103047431A
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- valve
- butterfly plate
- butterfly
- lever
- plate
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Abstract
The invention provides a balanced type high-performance butterfly valve which comprises a valve body, a seal ring, a butterfly plate, a pressure plate and a valve shaft. The seal ring is fixed on the butterfly plate through the pressure plate, the back surface of the butterfly plate is provided with a support, the valve shaft penetrates through the support, the butterfly plate is sleeved on the valve shaft, a lever is further installed on the back surface of the butterfly plate and is connected with the valve shaft through a key, the butterfly plate is further provided with a taper hole, and a small valve clack is installed in the taper hole and is connected with the lever through a pin. When the valve is at an off-position, a distance is reserved between the front end face of the lever and the back surface of the butterfly plate. The balanced type high-performance butterfly valve has the advantages that differential pressure is balanced before the valve is opened, friction force is small, and the valve is energy-saving, cost-reducing and long in service life.
Description
Technical field
The present invention relates to a kind of valving, particularly relate to a kind of butterfly valve of opening behind the pressure reduction of front first balance both sides of opening.
Background technique
The hard seal butterfly valve that uses at metallurgical, nuclear power field gas pipeline at present, when valve is in off-position, because there is pressure reduction in the butterfly plate both sides, particularly under high-pressure situations, the frictional force of seal ring and valve seat is large during valve opening, the moment of torsion that supporting drive unit needs is large, valve opening inconvenience.
Summary of the invention
The frictional force of seal ring and valve seat is large when opening in order to overcome existing hard seal butterfly valve, and the moment of torsion that supporting drive unit needs is large, and the deficiency of valve opening inconvenience the invention provides a kind of balance type high-performance butterfly valve.
The technical solution adopted for the present invention to solve the technical problems is a kind of balance type high-performance butterfly valve, comprise valve body, seal ring, butterfly plate, pressing plate, valve shaft, seal ring is fixed on the butterfly plate by pressing plate, and there is bearing at the butterfly plate back side, and valve shaft passes bearing, the butterfly plate empty set is on valve shaft, a lever also is equipped with at the back side of butterfly plate, and lever is connected by key with valve shaft, also has a cone shape hole on the butterfly plate, one little flap is housed in the cone shape hole, and little flap is connected by pin with lever.When valve was in off-position, there was a distance at the front-end face of lever and the back side of butterfly plate.
Open after the invention has the beneficial effects as follows the front first balance pressure reduction of valve opening, frictional force is little, and is energy-saving and cost-reducing, long service life.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the tectonic maps of present embodiment
Fig. 2 be among Fig. 1 A to view
Among the figure: 1. valve body; 2. seal ring; 3. pressing plate; 4. butterfly plate; 5. lever; 6 valve shafts; 7. key; 8. cone shape hole; 9. sell; 10. little flap; 11. bearing.
Embodiment
As illustrated in fig. 1 and 2, a kind of balance type high-performance butterfly valve comprises valve body 1, seal ring 2, butterfly plate 4, pressing plate 3, valve shaft 6, and seal ring 2 is fixed on the butterfly plate 4 by pressing plate 3, there is bearing 11 at butterfly plate 4 back sides, valve shaft 6 passes bearing 11, and butterfly plate 4 empty sets are on valve shaft 6, and a lever 5 also is equipped with at the back side of butterfly plate 4, lever 5 is connected by key 7 with valve shaft 6, also have a cone shape hole 8 on the butterfly plate 4, a little flap 10 is housed in the cone shape hole 8, little flap 10 is connected by pin 9 with lever 5.When valve was in off-position, there was a distance at the back side of the front-end face of lever 5 and butterfly plate 4.
When driving valve, valve shaft 6 is rotated counterclockwise, and drives lever 5 by pin 9 and makes counter-clockwise swing, and little flap 10 promotes the cone shape hole 8 that breaks away from the butterfly plate 4 with the afterbody of lever 5, and medium is realized the balance of butterfly plate 4 front and back pressure by cone shape hole 8.When lever 5 swings to front-end face and contacts with butterfly plate 4 back sides, promote butterfly plate 4 together around valve shaft 6 rotations, realize the opening process of valve.When closing valve, valve shaft 6 turns clockwise, and drives levers 5 by pin 9 and does to swing clockwise, and little flap 10 descends with the afterbody of lever 5 and fits like a glove with cone shape hole 8 on the butterfly plate 4, promotes butterfly plate 4 together around valve shaft 6 rotations again, realizes the closing process of valve.
Claims (1)
1. balance type high-performance butterfly valve, comprise valve body, seal ring, butterfly plate, pressing plate, valve shaft, seal ring is fixed on the butterfly plate by pressing plate, it is characterized in that: there is bearing at the described butterfly plate back side, and valve shaft passes bearing, the butterfly plate empty set is on valve shaft, a lever also is equipped with at the back side of butterfly plate, and lever is connected by key with valve shaft, also has a cone shape hole on the butterfly plate, one little flap is housed in the cone shape hole, and little flap is connected by pin with lever.When valve was in off-position, there was a distance at the front-end face of lever and the back side of butterfly plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103210417A CN103047431A (en) | 2011-10-15 | 2011-10-15 | Balanced type high-performance butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103210417A CN103047431A (en) | 2011-10-15 | 2011-10-15 | Balanced type high-performance butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103047431A true CN103047431A (en) | 2013-04-17 |
Family
ID=48060192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103210417A Pending CN103047431A (en) | 2011-10-15 | 2011-10-15 | Balanced type high-performance butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103047431A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455484A (en) * | 2013-09-17 | 2015-03-25 | 阿尔斯通技术有限公司 | Butterfly valve arrangement |
| CN104976360A (en) * | 2014-04-10 | 2015-10-14 | 江苏神通阀门股份有限公司 | High-pressure balance butterfly valve |
| CN107740868A (en) * | 2017-11-20 | 2018-02-27 | 郭弘 | A kind of butterfly valve with pre- decompression function |
| CN111365474A (en) * | 2020-04-27 | 2020-07-03 | 江苏神通阀门股份有限公司 | Butterfly plate structure for reducing torque of large-diameter butterfly valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2802269A1 (en) * | 1999-12-14 | 2001-06-15 | Solvay | Obturator for motor vehicle air intake has main closure with flow passage and auxiliary closure with flow opening and plug |
| US6273136B1 (en) * | 1998-03-25 | 2001-08-14 | Nord-Micro Elektronik Feinmechanik | Differential valve, specifically a cabin air discharge valve in an aircraft, and method for regulating cabin pressure |
| FR2813936A1 (en) * | 2000-09-14 | 2002-03-15 | Solvay | Control valve, for use in throttle system for IC engine, comprises pivoting first flap which contains aperture acting as by-pass, second valve mounted above outlet of aperture pivoting before main valve and setting it in motion |
| CN200986031Y (en) * | 2006-12-22 | 2007-12-05 | 张长宗 | Pressure relief type butterfly valve |
| CN202252018U (en) * | 2011-10-15 | 2012-05-30 | 江苏神通阀门股份有限公司 | Balance type high-performance butterfly valve |
-
2011
- 2011-10-15 CN CN2011103210417A patent/CN103047431A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6273136B1 (en) * | 1998-03-25 | 2001-08-14 | Nord-Micro Elektronik Feinmechanik | Differential valve, specifically a cabin air discharge valve in an aircraft, and method for regulating cabin pressure |
| FR2802269A1 (en) * | 1999-12-14 | 2001-06-15 | Solvay | Obturator for motor vehicle air intake has main closure with flow passage and auxiliary closure with flow opening and plug |
| FR2813936A1 (en) * | 2000-09-14 | 2002-03-15 | Solvay | Control valve, for use in throttle system for IC engine, comprises pivoting first flap which contains aperture acting as by-pass, second valve mounted above outlet of aperture pivoting before main valve and setting it in motion |
| CN200986031Y (en) * | 2006-12-22 | 2007-12-05 | 张长宗 | Pressure relief type butterfly valve |
| CN202252018U (en) * | 2011-10-15 | 2012-05-30 | 江苏神通阀门股份有限公司 | Balance type high-performance butterfly valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455484A (en) * | 2013-09-17 | 2015-03-25 | 阿尔斯通技术有限公司 | Butterfly valve arrangement |
| CN104976360A (en) * | 2014-04-10 | 2015-10-14 | 江苏神通阀门股份有限公司 | High-pressure balance butterfly valve |
| CN107740868A (en) * | 2017-11-20 | 2018-02-27 | 郭弘 | A kind of butterfly valve with pre- decompression function |
| CN111365474A (en) * | 2020-04-27 | 2020-07-03 | 江苏神通阀门股份有限公司 | Butterfly plate structure for reducing torque of large-diameter butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130417 |