CN209511140U - Three-eccentric-butterfly-valve - Google Patents
Three-eccentric-butterfly-valve Download PDFInfo
- Publication number
- CN209511140U CN209511140U CN201822191709.0U CN201822191709U CN209511140U CN 209511140 U CN209511140 U CN 209511140U CN 201822191709 U CN201822191709 U CN 201822191709U CN 209511140 U CN209511140 U CN 209511140U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- stress surface
- valve plate
- butterfly
- 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.)
- Active
Links
Landscapes
- Lift Valve (AREA)
Abstract
This application discloses a kind of three-eccentric-butterfly-valves, comprising: valve body, stop collar, valve seat, valve plate, valve rod, elastic element and valve plate sealing ring；Valve seat is axially displaceably set between the stopper protrusion and stop collar of the valve body；Elastic element is set between the valve seat and the stopper protrusion, and resists valve seat, so that valve seat is butted on stop collar side and provides the power towards stop collar to valve seat.The utility model three-eccentric-butterfly-valve, using the valve seat being axially movable, the displacement of valve seat is limited by elastic element, so that the sealed pressure that valve seat is subject to is gradually increased with the increase of pressure medium, it is, the seal pressure between valve plate sealing ring and valve seat increases with the increase of pressure medium, to improve the adaptive ability that valve seat changes retrograde fluid pressures, it ensure that required minimum seal pressure, avoiding valve seat, there is a situation where leak.
Description
Technical field
The utility model relates to valve technology field more particularly to a kind of three-eccentric-butterfly-valves.
Background technique
The valve seat of existing three-eccentric-butterfly-valve is generally fixedly installed in valve body, and reverse pressure-bearing ability is weaker, is not adapted to
The more demanding operating condition of two way seal leakage class.When three-eccentric-butterfly-valve reverse media pressure is higher, the fluid of elevated pressures
Medium acts on the valve plate face of retaining ring side, and due to the presence of radial disbalance, additional torque caused by Fluid pressure makes valve plate
Have the tendency that opening, with the increase of pressure medium, required minimum seal pressure increases between valve plate sealing ring and valve seat, and
Seal pressure actually between the two is gradually reduced, and is easy to leak because seal pressure is too small.
Utility model content
The utility model in view of the above-mentioned problems, overcome at least one deficiency, propose a kind of three-eccentric-butterfly-valve.
The technical solution that the utility model is taken is as follows:
A kind of three-eccentric-butterfly-valve, comprising: valve body, stop collar, valve seat, valve plate, valve rod, elastic element and valve plate sealing
Circle；
Valve body is equipped with stopper protrusion；
Stop collar is fixed in valve body；
Valve seat is axially displaceably set between the stopper protrusion and stop collar of the valve body；Elastic element is set to the valve
Between seat and the stopper protrusion, and valve seat is resisted, so that valve seat is butted on stop collar side and provides to valve seat towards stop collar
Power；
Valve seat through-hole is equipped in valve seat, valve plate is rotatably installed on valve seat side for closing or opening institute by valve rod
State valve seat through-hole；
Valve seat has the first stress surface towards stop collar, the second stress surface towards stopper protrusion, is located at valve seat through-hole
Interior third stress surface and the 4th stress surface；Valve plate has the sealing surface with the sealing cooperation of the 4th stress surface of valve seat, and valve plate is close
Seal is installed on valve plate, and sealing is formed between the 4th stress surface of valve seat and the sealing surface of valve plate for making.
In an embodiment of the present invention, the stopper protrusion is equipped with the first mounting groove, and the valve seat is equipped with and first
Corresponding second mounting groove of mounting groove, the both ends of the elastic element are butted on respectively in the first mounting groove and the second mounting groove.
It further include spacer pin in an embodiment of the present invention, one end of spacer pin is fixed in the first mounting groove, separately
One end is hanging, and the elastic element is placed on the outside of spacer pin.
In an embodiment of the present invention, the elastic element is compressed spring.
In an embodiment of the present invention, the first stress surface of valve seat, third stress surface, the 4th stress surface and second by
Power face is sequentially connected, and the first stress surface and the second stress surface are parallel or substantially parallel, between the first stress surface and third stress surface
Angle be obtuse angle, the angle between third stress surface and the 4th stress surface is obtuse angle, the 4th stress surface and the first stress surface it
Between angle be obtuse angle.
It further include valve plate retaining ring and retaining ring fastening screw in an embodiment of the present invention, the valve plate side is equipped with
Installation step, the valve plate sealing ring are installed on the installation step of valve plate, and the valve plate retaining ring is solid by retaining ring fastening screw
Due to valve plate side, valve plate sealing ring is pressed on the installation step of valve plate by valve plate retaining ring, the outer end face of valve plate sealing ring with
4th stress surface of valve seat seals cooperation.
In an embodiment of the present invention, the outer end face of the valve plate sealing ring is mutually to fit with the 4th stress surface of valve seat
The inclined-plane answered.
In an embodiment of the present invention, the valve plate sealing ring is made of rubber material.
In an embodiment of the present invention, the periphery of the valve seat is equipped with sealed groove, installation in the sealed groove
There is valve seat insert, which, which is pressed between sealed groove and valve body, forms sealing.
In an embodiment of the present invention, the stop collar is installed in valve body by holding screw.
The beneficial effect of the utility model compared with the prior art is: the utility model three-eccentric-butterfly-valve, using can be axial
Mobile valve seat limits the displacement of valve seat by elastic element, so that the sealed pressure that valve seat is subject to is with pressure medium
Increase and is gradually increased, it is, the seal pressure between valve plate sealing ring and valve seat increases with the increase of pressure medium, from
And the adaptive ability that valve seat changes retrograde fluid pressures is improved, it ensure that required minimum seal pressure, avoid valve
There is a situation where leak for seat.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of an embodiment of the utility model three-eccentric-butterfly-valve；
Fig. 2 is the force analysis figure of the valve seat of an embodiment of the utility model three-eccentric-butterfly-valve.
Specific embodiment
Below with reference to each attached drawing, the utility model is described in detail.
Please refer to Fig. 1, shown in 2, the utility model provides a kind of three-eccentric-butterfly-valve, comprising: valve body 1, stop collar 4, valve seat
2, valve plate 3, valve rod 6, elastic element 5, valve plate sealing ring 31, valve plate retaining ring 32 and retaining ring fastening screw 33.
Valve body 1 is equipped with stopper protrusion 11.11 preferred cross-sections of stopper protrusion are rectangular cyclic structure, and structure is simple, and
It is highly reliable.The stopper protrusion 11 is preferably extended inwardly to form by 1 part of valve body, and structure is an integral structure, stronger.
Stop collar 4 is fixed in valve body 1, for limiting the shaft orientation moving range of valve seat 2.Preferably, the stop collar 4 is logical
It crosses holding screw 41 to be installed in valve body 1, mounting structure is reliable.
Valve seat 2 is axially displaceably between the stopper protrusion 11 and stop collar 4 of the valve body 1.Then valve seat 2 is movable
Range be limited between position limiting convex ring and stop collar 4.
Elastic element 5 is set between the valve seat 2 and the stopper protrusion 11, and resists valve seat 2, so that valve seat 2 is butted on
4 side of stop collar simultaneously provides the power towards stop collar 4 to valve seat 2.The 5 preferred compressed spring of elastic element, structure is simple, valence
Lattice are cheap.During the work time, compressed spring is in compressive state always, provides the spring perpendicular to 2 surface of valve seat to valve seat 2
Power.
When installation, elastic elements 5 first are then charged into valve seat 2, finally install stop collar 4 again.
Valve seat through-hole 201 is equipped in valve seat 2, valve plate 3 is rotatably installed on 2 side of valve seat for closing by valve rod 6
Or the valve seat through-hole 201 is opened, to control the folding of three-eccentric-butterfly-valve.
Valve seat 2 has the first stress surface A towards stop collar 4, the second stress surface B towards stopper protrusion 11, is located at valve
Third stress surface C and the 4th stress surface D in block hole 201.Valve plate 3 has and the 4th stress surface D of valve seat 2 sealing cooperation
Sealing surface.Valve plate sealing ring 31 is installed on valve plate 3, for making between the 4th stress surface D of valve seat 2 and the sealing surface of valve plate 3
Form sealing.
The first stress surface A, third stress surface C, the 4th stress surface D and the second stress surface B of the valve seat 2 are sequentially connected,
First stress surface A and the second stress surface B are parallel or substantially parallel, and the angle between the first stress surface A and third stress surface C is blunt
Angle, the angle between third stress surface C and the 4th stress surface D is obtuse angle, the folder between the 4th stress surface D and the first stress surface A
Angle is obtuse angle.The the first stress surface A and the second stress surface B of valve seat 2 i.e. two end faces of valve seat 2, third stress surface C and
Four stress surface D are the inclined-planes of two end slopes relative to valve seat 2.When 2 closed valve seat through-hole 201 of valve seat, valve plate 3 and valve plate
Sealing ring 31 applies sealed pressure to the 4th stress surface D of valve seat 2, to form good sealing between valve plate 3 and valve seat 2.
3 side of valve plate is equipped with installation step, and the valve plate sealing ring 31 is installed on the installation step of valve plate 3, institute
It states valve plate retaining ring 32 and 3 side of valve plate is fixed on by retaining ring fastening screw 33, valve plate sealing ring 31 is pressed in by valve plate retaining ring 32
On the installation step of valve plate 3, the outer end face of valve plate sealing ring 31 and the 4th stress surface D of valve seat 2 are sealed and are cooperated.
The outer end face of the valve plate sealing ring 31 is the inclined-plane adaptable with the 4th stress surface D of valve seat 2, so that sealing connects
Contacting surface is bigger, seals relatively reliable.
The valve plate sealing ring 31 is made of rubber material, and sealing effect is good.
Further, the stopper protrusion 11 is equipped with the first mounting groove 111, and the valve seat 2 is equipped with and the first mounting groove 111
Corresponding second mounting groove 202, the both ends of the elastic element 5 are butted on the first mounting groove 111 and the second mounting groove 202 respectively
It is interior.First mounting groove 111 and the second mounting groove 202 provide installation space to elastic element 5, and limit elastic element 5
The case where position avoids in the long-term use, and elastic element 5 falls off between valve seat 2 and stopper protrusion 11.
The three-eccentric-butterfly-valve further includes spacer pin 51, and one end of spacer pin 51 is fixed in the first mounting groove 111, another
End is hanging, and the elastic element 5 is placed on the outside of spacer pin 51.The setting of spacer pin 51 further limits elastic element 5
Position, so that total assembly is simpler, and stable structure after assembly.
The periphery of the valve seat 2 is equipped with sealed groove 202, is equipped with valve seat insert 21 in the sealed groove 202, should
Valve seat insert 21 be pressed between sealed groove 202 and valve body 1 formed sealing, prevent reversed pressurized fluid by valve seat 2 with
Valve body leaks between 1 inner cavity.
Incorporated by reference to shown in Fig. 2, the force analysis of the utility model three-eccentric-butterfly-valve is as follows: the first of movable valve seat 2 by
Power face A and third stress surface C effect has a counter fluid pressure medium Fp, and the second stress surface B effect has a spring force Fsp, the 4th by
D effect in power face has sealed pressure Fq.When movable 2 first side stress surface A of valve seat fluid medium pressure increase when, first by
Counter fluid pressure medium Fp on power face A and third stress surface C increases therewith.Do not occur when valve plate 3 only has rotation trend
When actual deflection, the decrement of spring is constant namely 2 second stress surface B of valve seat suffered by spring force Fsp it is constant, therefore the 4th by
Sealed pressure Fq on the D of power face is consequently increased；When small angle deflection occurs for valve plate 3, movable valve seat 2 occurs centainly therewith
The axial movement of displacement, the amount of compression increases for compressed spring, and spring force Fsp suffered by 2 second stress surface B of valve seat increases, and leads to
Cross the spring rate of reasonable selection compressed spring, it is ensured that sealed pressure Fq on the 4th stress surface D with pressure medium increase
And increase.It can be seen that no matter valve plate 3 is static or certain angle occurs by using technical solutions of the utility model
It deflects, the sealed pressure Fq on the 4th stress surface D can be gradually increased with the increase of pressure medium, thus needed for guaranteeing most
Small seal pressure.
It can be seen that the utility model three-eccentric-butterfly-valve is limited using the valve seat 2 being axially movable by elastic element 5
The displacement of valve seat 2, so that the sealed pressure that valve seat 2 is subject to is gradually increased with the increase of pressure medium, it is, valve plate
Seal pressure between sealing ring 31 and valve seat 2 increases with the increase of pressure medium, to improve valve seat to counter fluid
The adaptive ability of pressure change ensure that required minimum seal pressure, and avoiding valve seat, there is a situation where leak.
The above is only the preferred embodiment of the present invention, not thereby limits the patent protection of the utility model
Range, it is all with equivalent structure transformation made by the utility model specification and accompanying drawing content, directly or indirectly it is used in it
His relevant technical field similarly includes within the protection scope of the present utility model.
Claims (10)
1. a kind of three-eccentric-butterfly-valve characterized by comprising valve body, stop collar, valve seat, valve plate, valve rod, elastic element and
Valve plate sealing ring；
Valve body is equipped with stopper protrusion；
Stop collar is fixed in valve body；
Valve seat is axially displaceably set between the stopper protrusion and stop collar of the valve body；Elastic element be set to the valve seat and
Between the stopper protrusion, and valve seat is resisted, so that valve seat is butted on stop collar side and provides the power towards stop collar to valve seat；
Valve seat through-hole is equipped in valve seat, valve plate is rotatably installed on valve seat side for closing or opening the valve by valve rod
Block hole；
Valve seat has the first stress surface towards stop collar, the second stress surface towards stopper protrusion, in valve seat through-hole
Third stress surface and the 4th stress surface；Valve plate has the sealing surface with the sealing cooperation of the 4th stress surface of valve seat, valve plate sealing ring
It is installed on valve plate, forms sealing between the 4th stress surface of valve seat and the sealing surface of valve plate for making.
2. three-eccentric-butterfly-valve as described in claim 1, which is characterized in that the stopper protrusion is equipped with the first mounting groove, described
Valve seat is equipped with the second mounting groove corresponding with the first mounting groove, and the both ends of the elastic element are butted on the first mounting groove and the respectively
In two mounting grooves.
3. three-eccentric-butterfly-valve as claimed in claim 2, which is characterized in that further include spacer pin, one end of spacer pin is fixed on
In first mounting groove, the other end is hanging, and the elastic element is placed on the outside of spacer pin.
4. three-eccentric-butterfly-valve as described in claim 1, which is characterized in that the elastic element is compressed spring.
5. three-eccentric-butterfly-valve as described in claim 1, which is characterized in that the first stress surface, the third stress surface, the 4th of valve seat
Stress surface and the second stress surface are sequentially connected, and the first stress surface and the second stress surface are parallel or substantially parallel, the first stress surface and
Angle between third stress surface is obtuse angle, and the angle between third stress surface and the 4th stress surface is obtuse angle, the 4th stress surface
And the first angle between stress surface is obtuse angle.
6. three-eccentric-butterfly-valve as described in claim 1, which is characterized in that further include valve plate retaining ring and retaining ring fastening screw, institute
Valve plate side is stated equipped with installation step, the valve plate sealing ring is installed on the installation step of valve plate, and the valve plate retaining ring passes through
Retaining ring fastening screw is fixed on valve plate side, and valve plate sealing ring is pressed on the installation step of valve plate by valve plate retaining ring, and valve plate is close
The outer end face of seal and the 4th stress surface of valve seat seal and cooperate.
7. three-eccentric-butterfly-valve as claimed in claim 6, which is characterized in that the outer end face of the valve plate sealing ring be and valve seat
The adaptable inclined-plane of 4th stress surface.
8. three-eccentric-butterfly-valve as described in claim 1, which is characterized in that the valve plate sealing ring is made of rubber material.
9. three-eccentric-butterfly-valve as described in claim 1, which is characterized in that the periphery of the valve seat is equipped with sealed groove, described
Valve seat insert is installed, which, which is pressed between sealed groove and valve body, forms sealing in sealed groove.
10. three-eccentric-butterfly-valve as described in claim 1, which is characterized in that the stop collar is installed on valve by holding screw
In vivo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822191709.0U CN209511140U (en) | 2018-12-25 | 2018-12-25 | Three-eccentric-butterfly-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822191709.0U CN209511140U (en) | 2018-12-25 | 2018-12-25 | Three-eccentric-butterfly-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209511140U true CN209511140U (en) | 2019-10-18 |
Family
ID=68197018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822191709.0U Active CN209511140U (en) | 2018-12-25 | 2018-12-25 | Three-eccentric-butterfly-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209511140U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505999A (en) * | 2018-12-25 | 2019-03-22 | 博雷（中国）控制系统有限公司 | Three-eccentric-butterfly-valve |
-
2018
- 2018-12-25 CN CN201822191709.0U patent/CN209511140U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505999A (en) * | 2018-12-25 | 2019-03-22 | 博雷（中国）控制系统有限公司 | Three-eccentric-butterfly-valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102878316B (en) | Ball valve reliable in sealing and low in opening-closing torque | |
| CN209511140U (en) | Three-eccentric-butterfly-valve | |
| CN111043332B (en) | Metal sealed three eccentric butterfly valve | |
| CN202834165U (en) | Ball valve reliable in seal and small in opening and closing torque | |
| CN109505999A (en) | Three-eccentric-butterfly-valve | |
| CN109372997A (en) | The moveable three-eccentric-butterfly-valve of valve seat | |
| CN209511135U (en) | The moveable three-eccentric-butterfly-valve of valve seat | |
| CN202469060U (en) | Sealing structure of ball valve | |
| CN105065700A (en) | Self-sealing gate valve structure | |
| CN202469061U (en) | Novel sealing structure of novel ball valve | |
| CN216158298U (en) | Electromagnetic valve | |
| CN105090607A (en) | High-sealing-performance gate valve | |
| CN113074275B (en) | Electromagnetic valve | |
| CN215487715U (en) | Sealing structure of butterfly valve | |
| CN215059967U (en) | Fixed high-pressure gate valve seal structure | |
| CN201705985U (en) | Metal hard seal floating ball valve | |
| CN211574378U (en) | Electromagnetic valve | |
| CN209309376U (en) | A kind of valve seat sealing mechanism suitable for worst cold case | |
| CN202955274U (en) | Improved seal structure of ball valve | |
| CN207316095U (en) | High temperature and pressure three eccentric metal sealed butterfly valve | |
| CN102954236A (en) | Stop valve based on high-tightness valve clack | |
| CN219588164U (en) | Internal balance elastic ball valve seat | |
| CN202149228U (en) | Adjusting valve | |
| CN105465392A (en) | Valve fast in response | |
| CN219035579U (en) | Electronic expansion valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |