CN107289141A - A kind of metal Bidirectional pressure hard seal butterfly valve - Google Patents
A kind of metal Bidirectional pressure hard seal butterfly valve Download PDFInfo
- Publication number
- CN107289141A CN107289141A CN201610197933.3A CN201610197933A CN107289141A CN 107289141 A CN107289141 A CN 107289141A CN 201610197933 A CN201610197933 A CN 201610197933A CN 107289141 A CN107289141 A CN 107289141A
- Authority
- CN
- China
- Prior art keywords
- butterfly plate
- sealing ring
- valve seat
- butterfly
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
- F16K1/2266—Shaping or arrangements of the sealing the sealing being arranged on the valve seat and being forced into sealing contact with the valve member by a spring or a spring-like member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The present invention relates to a kind of metal Bidirectional pressure hard seal butterfly valve.Including butterfly plate, valve body and valve rod, valve rod is fixedly connected with the butterfly plate being built in valve body, movable valve seat is installed at step in valve body, sealing ring is cased with the right side of butterfly plate, the outer-diameter end face of sealing ring and the internal diameter end face of movable valve seat cooperatively form sealing pair, provided with the disc holder being fixedly connected with the valve body on the right side of movable valve seat, the right side of disc holder is provided with annular groove, spring is provided with annular groove, spring left end contradicts movable valve seat right side, the right side of sealing ring is provided with the butterfly plate pressing plate being fixedly connected with butterfly plate, and sealing ring is located between butterfly plate and butterfly plate pressing plate.The present invention is simple in construction, the multi-layer sealing ring of knife-edge otch has cleaning effect to movable valve seat, movable valve seat is under thrust and the spring thrust effect of pressure, movable valve seat pushes away tighter and tighter to butterfly plate, so as to realize good sealing, moment of torsion of the present invention is greatly reduced, so as to improve the service life of valve.
Description
Technical field
The present invention relates to a kind of butterfly valve, more particularly to a kind of metal Bidirectional pressure hard seal butterfly valve, belong to butterfly valve technical field.
Background technology
The valve seat of existing butterfly valve hard sealing structure is in valve body, the seal pressure of sealing pair is realized by adjusting the pad at the valve seat back side, so as to reach sealing effectiveness, but this structure carries certain limitation, in process of production because of the accumulation of various machining tolerances, causes assembly difficulty to increase, efficiency is low, difference in torque because of adjustment difficulty than larger generation like products is away from larger, and sealing pair service life is short, it is difficult to reach two way seal effect.
The content of the invention
For drawbacks described above, it is an object of the invention to provide a kind of simple in construction, good sealing effect, extend sealing pair service life, realize a kind of metal Bidirectional pressure hard seal butterfly valve of two way seal effect.
It is for this technical solution adopted in the present invention：
Including butterfly plate, valve body and valve rod, the valve rod is fixedly connected with the butterfly plate being built in valve body, movable valve seat is installed at step in the valve body, sealing ring is cased with the right side of the butterfly plate, the outer-diameter end face of the sealing ring and the internal diameter end face of movable valve seat cooperatively form sealing pair, provided with the disc holder being fixedly connected with the valve body on the right side of the movable valve seat, the right side of the disc holder is provided with annular groove, spring is provided with the annular groove, the spring left end contradicts movable valve seat right side, the right side of the sealing ring is provided with the butterfly plate pressing plate being fixedly connected with butterfly plate, the sealing ring is located between butterfly plate and butterfly plate pressing plate.
Further, the sealing ring is the multi-layer sealing ring of knife-edge otch.
Further, the sealing pair is a part for the tilting elliptical cone of a relative valve flowing channel lack of alignment.
Further, the movable valve seat and valve body radially and between axial direction are respectively equipped with the first O-ring seal.
Further, the second O-ring seal is provided between the disc holder and valve body.
It is an advantage of the invention that：
The present invention is simple in construction, the multi-layer sealing ring of knife-edge otch has cleaning effect to movable valve seat, movable valve seat is under thrust and the spring thrust effect of pressure, movable valve seat pushes away tighter and tighter to butterfly plate, so as to realize good sealing, moment of torsion of the present invention is greatly reduced, so as to improve the service life of valve.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the partial enlarged drawing of A in Fig. 1.
1 it is butterfly plate in figure, 2 be valve body, 3 be valve rod, 4 be movable valve seat, 5 be sealing ring, 6 be disc holder, 7 be spring, 8 be butterfly plate pressing plate, 9 be the first O-ring seal, 10 is the second O-ring seal.
Embodiment
A kind of metal Bidirectional pressure hard seal butterfly valve, including butterfly plate 1, valve body 2 and valve rod 3, the valve rod 3 is fixedly connected with the butterfly plate 1 being built in valve body 2, movable valve seat 4 is installed at step in the valve body 2, the right side of butterfly plate 1 is cased with sealing ring 5, the outer-diameter end face of the sealing ring 5 cooperatively forms sealing pair with the internal diameter end face of movable valve seat 4, the right side of movable valve seat 4 is provided with the disc holder 6 being fixedly connected with valve body 2, the right side of the disc holder 6 is provided with annular groove, spring 7 is provided with the annular groove, the left end of spring 7 contradicts the right side of movable valve seat 4, the right side of the sealing ring 5 is provided with the butterfly plate pressing plate 8 being fixedly connected with butterfly plate 1, the sealing ring 5 is located between butterfly plate 1 and butterfly plate pressing plate 8；The sealing ring 5 is the multi-layer sealing ring 5 of knife-edge otch；The sealing pair is a part for the tilting elliptical cone of a relative valve flowing channel lack of alignment；The movable valve seat 4 and valve body 2 radially and between axial direction are respectively equipped with the first O-ring seal 9；The second O-ring seal 10 is provided between the disc holder 6 and valve body 2.
Claims (5)
1. a kind of metal Bidirectional pressure hard seal butterfly valve, it is characterized in that, including butterfly plate, valve body and valve rod, the valve rod is fixedly connected with the butterfly plate being built in valve body, movable valve seat is installed at step in the valve body, sealing ring is cased with the right side of the butterfly plate, the outer-diameter end face of the sealing ring and the internal diameter end face of movable valve seat cooperatively form sealing pair, provided with the disc holder being fixedly connected with the valve body on the right side of the movable valve seat, the right side of the disc holder is provided with annular groove, spring is provided with the annular groove, the spring left end contradicts movable valve seat right side, the right side of the sealing ring is provided with the butterfly plate pressing plate being fixedly connected with butterfly plate, the sealing ring is located between butterfly plate and butterfly plate pressing plate.
2. a kind of metal Bidirectional pressure hard seal butterfly valve according to claim 1, it is characterised in that the sealing ring is the multi-layer sealing ring of knife-edge otch.
3. a kind of metal Bidirectional pressure hard seal butterfly valve according to claim 1, it is characterised in that the sealing pair is a part for the tilting elliptical cone of a relative valve flowing channel lack of alignment.
4. a kind of metal Bidirectional pressure hard seal butterfly valve according to claim 1, it is characterised in that the movable valve seat and valve body radially and between axial direction are respectively equipped with the first O-ring seal.
5. a kind of metal Bidirectional pressure hard seal butterfly valve according to claim 1, it is characterised in that the second O-ring seal is provided between the disc holder and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610197933.3A CN107289141A (en) | 2016-03-31 | 2016-03-31 | A kind of metal Bidirectional pressure hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610197933.3A CN107289141A (en) | 2016-03-31 | 2016-03-31 | A kind of metal Bidirectional pressure hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107289141A true CN107289141A (en) | 2017-10-24 |
Family
ID=60086833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610197933.3A Pending CN107289141A (en) | 2016-03-31 | 2016-03-31 | A kind of metal Bidirectional pressure hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107289141A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984132A (en) * | 2021-04-15 | 2021-06-18 | 刘帆 | Butterfly valve with high tightness and use method thereof |
-
2016
- 2016-03-31 CN CN201610197933.3A patent/CN107289141A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984132A (en) * | 2021-04-15 | 2021-06-18 | 刘帆 | Butterfly valve with high tightness and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171024 |