CN111365477A - Six-freedom-degree full-floating butterfly valve structure - Google Patents
Six-freedom-degree full-floating butterfly valve structure Download PDFInfo
- Publication number
- CN111365477A CN111365477A CN202010342442.XA CN202010342442A CN111365477A CN 111365477 A CN111365477 A CN 111365477A CN 202010342442 A CN202010342442 A CN 202010342442A CN 111365477 A CN111365477 A CN 111365477A
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- China
- Prior art keywords
- spring
- spring thrust
- sealing
- thrust ball
- butterfly
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- 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.)
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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
- F16K1/16—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
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve 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
- F16K1/16—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
- F16K1/228—Movable sealing bodies
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The utility model provides a full floating butterfly valve structure of six degrees of freedom, is equipped with spring thrust ball subassembly I including valve body, clamp plate, butterfly plate, the sealing washer of fixed disk seat in area, between sealing washer and clamp plate, is equipped with spring thrust seal seat subassembly, fixed sealing member between sealing washer and butterfly plate, and sealing washer bottom butt spring thrust ball subassembly II, spring thrust ball subassembly II distribute on the boss of butterfly plate, and spring thrust ball subassembly II passes through adjusting screw adjusting spring force. The butterfly valve has the advantages that the movement of the sealing ring in the directions of six degrees of freedom is realized, enough adjustment allowance can be provided when the metal material shrinks or expands due to temperature alternation, and the leakage, blockage and other adverse conditions of the butterfly valve are prevented on the premise of ensuring the sealing of the butterfly valve.
Description
Technical Field
The invention relates to a butterfly valve, in particular to a six-degree-of-freedom full-floating butterfly valve structure.
Background
Butterfly valves are classified as valve products, and are more and more favored by users due to the advantages of narrow structural length, low installation height, light overall weight, short opening and closing time, low manufacturing cost and the like compared with gate valves. However, the problems of machining precision and tolerance of the equipment often cause the situation of leakage of a butterfly valve sealing pair (between a sealing ring and a valve seat), and the sealing effect of the butterfly valve is affected. Meanwhile, the matching of the butterfly valve sealing pair is generally surface contact matching, and no adjustment allowance exists at alternating temperature, so that the conventional butterfly valve product can only be applied to the working condition of specific temperature, and the condition of low-temperature leakage or high-temperature blockage can occur at the alternating temperature, thereby restricting the application range of the butterfly valve product.
In the prior art, "CN 203374825U", a valve seat adopts a double-piston effect form, can float freely along the axis of a valve body, obtains initial sealing by spring loading after the valve seat under the condition of low pressure difference, supplements the thrust of the valve seat along with the increase of the medium pressure at the upstream or downstream of a pipeline, and ensures that a sealing surface of the valve seat keeps close contact with a butterfly plate, thereby achieving better sealing effect. However, the floating valve seat of the structure adopts the O-shaped ring for sealing, and cannot be suitable for special working conditions such as high temperature or low temperature and chemical corrosion media, and meanwhile, the structure can only float along the axis of the pipeline for compensating the sealing specific pressure, cannot compensate in other directions, and can cause the situation of sealing leakage when the machining error of parts is large.
The prior art "CN 209026215U" mainly solves the problem that the use temperature is not high due to the adoption of an O-shaped ring seal between the existing floating type valve seat and the valve body, and when high temperature is required, the valve seat can not compensate the displacement of the butterfly plate during reverse pressure, and the medium acting force can not assist the valve seat to seal and realize bidirectional pressure bearing. However, the valve seat of the structure is free floating, a pre-tightening device is not arranged, and leakage may occur if the medium force cannot overcome the friction force to push the floating valve seat to move under the low pressure condition. Meanwhile, the structure can only float along the axis of the pipeline to compensate the sealing specific pressure, cannot compensate other directions, and can cause the situation of sealing leakage when the machining error of parts is large.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a full-floating butterfly valve structure with six degrees of freedom.
The technical scheme includes that the six-degree-of-freedom full-floating butterfly valve structure comprises a valve body with a fixed valve seat, a pressing plate, a butterfly plate and a sealing ring, a spring thrust ball assembly I is arranged between the sealing ring and the pressing plate, a spring thrust sealing seat assembly and a fixed sealing element are arranged between the sealing ring and the butterfly plate, the bottom of the sealing ring is abutted to the spring thrust ball assembly II, the spring thrust ball assembly II is distributed on a boss of the butterfly plate, and the spring force of the spring thrust ball assembly II is adjusted through an adjusting screw.
Preferably, spring thrust ball subassembly I includes spring I, steel ball I, and steel ball I butt sealing washer.
Preferably, spring thrust ball subassembly II includes spring II, steel ball II, and steel ball II butts the sealing washer.
Preferably, the spring thrust seal seat assembly comprises a spring III, a seal seat and a sealing gasket, wherein the sealing gasket abuts against the sealing ring.
Preferably, the adjustment screw is cam-shaped.
The butterfly valve has the advantages that the movement of the sealing ring in the directions of six degrees of freedom is realized, enough adjustment allowance can be provided when the metal material shrinks or expands due to temperature alternation, and the leakage, blockage and other adverse conditions of the butterfly valve are prevented on the premise of ensuring the sealing of the butterfly valve. Meanwhile, the structure has better sealing compensation performance, and can avoid the problem of sealing leakage caused by the problems of equipment machining precision and tolerance.
Drawings
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is an enlarged view of part I of the overall schematic diagram of the present invention;
FIG. 3 is a schematic view of an adjusting screw;
FIG. 4 is a schematic view of adjustment of the adjustment screw;
FIG. 5 is a schematic structural view of a spring thrust ball assembly I;
FIG. 6 is a schematic structural view of a spring thrust ball assembly II;
FIG. 7 is a schematic view of a spring thrust seal holder assembly.
In the figure: 1. a valve body with a fixed valve seat; 2. a spring thrust ball assembly I; 3. pressing a plate; 4. a butterfly plate; 5. adjusting screws, 6. a spring thrust ball component II; 7. a spring thrust seal housing assembly; 8. a seal ring; 9. and fixing the sealing element.
Detailed Description
As shown in the figure, a full floating butterfly valve structure of six degrees of freedom, including the valve body 1 of fixed disk seat in area, clamp plate 3, butterfly plate 4, sealing washer 8, be equipped with spring thrust ball subassembly I2 between sealing washer 8 and clamp plate 3, spring thrust ball subassembly I2 includes spring I201, steel ball I202, steel ball I201 butt sealing washer 8, be equipped with spring thrust seal seat subassembly 7 between sealing washer 8 and butterfly plate 4, fixed seal 9, spring thrust seal seat subassembly 7 includes spring III, seal receptacle 702, sealed pad 703 butt sealing washer 8, realize the removal of two degrees of freedom of sealing washer 8 axial through spring thrust ball subassembly I2 and spring reasoning seal seat subassembly 7. 8 bottom butt spring thrust ball subassembly II6 of sealing washer, spring thrust ball subassembly II6 includes spring II601, steel ball II602 butt sealing washer 8, spring thrust ball subassembly II6 distributes on the boss of butterfly plate 4, realize the removal of 8 radial four degrees of freedom of sealing washer with spring force effect in the sealing washer 8 bottom through steel ball II602, 5 spring forces are adjusted through adjusting screw to spring thrust ball subassembly II6, adjusting screw 5 is the cam form.
Through the removal of sealing washer 8 in six degrees of freedom directions, can have sufficient regulation allowance when temperature alternation leads to metal material shrink or inflation, prevent that the butterfly valve from appearing leaking, jamming bad condition such as hindering under the prerequisite of guaranteeing the butterfly valve is sealed. Meanwhile, the structure has better sealing compensation performance, and can avoid the problem of sealing leakage caused by the problems of equipment machining precision and tolerance.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a full floating butterfly valve structure of six degrees of freedom, includes valve body, clamp plate, butterfly plate, the sealing washer of fixed disk seat in area, its characterized in that, be equipped with spring thrust ball subassembly I between sealing washer and clamp plate, be equipped with spring thrust seal receptacle subassembly, fixed sealing member between sealing washer and butterfly plate, sealing washer bottom butt spring thrust ball subassembly II, spring thrust ball subassembly II distributes on the boss of butterfly plate, spring thrust ball subassembly II passes through adjusting screw adjusting spring force.
2. The structure of claim 1, wherein the spring thrust ball assembly I comprises a spring I and a steel ball I, and the steel ball I abuts against the sealing ring.
3. The structure of claim 1, wherein the spring thrust ball assembly II comprises a spring II and a steel ball II, and the steel ball II abuts against the sealing ring.
4. The structure of claim 1, wherein the spring thrust seal seat assembly comprises a spring iii, a seal seat, and a seal gasket, and the seal gasket abuts against the seal ring.
5. The structure of claim 1, wherein the adjusting screw is cam-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010342442.XA CN111365477A (en) | 2020-04-27 | 2020-04-27 | Six-freedom-degree full-floating butterfly valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010342442.XA CN111365477A (en) | 2020-04-27 | 2020-04-27 | Six-freedom-degree full-floating butterfly valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111365477A true CN111365477A (en) | 2020-07-03 |
Family
ID=71212173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010342442.XA Pending CN111365477A (en) | 2020-04-27 | 2020-04-27 | Six-freedom-degree full-floating butterfly valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111365477A (en) |
-
2020
- 2020-04-27 CN CN202010342442.XA patent/CN111365477A/en active Pending
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