CN201335158Y - Hard butterfly valve with single-sided dynamic seal - Google Patents
Hard butterfly valve with single-sided dynamic seal Download PDFInfo
- Publication number
- CN201335158Y CN201335158Y CNU200920001007XU CN200920001007U CN201335158Y CN 201335158 Y CN201335158 Y CN 201335158Y CN U200920001007X U CNU200920001007X U CN U200920001007XU CN 200920001007 U CN200920001007 U CN 200920001007U CN 201335158 Y CN201335158 Y CN 201335158Y
- Authority
- CN
- China
- Prior art keywords
- valve
- butterfly plate
- sealing surface
- valve seat
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a hard butterfly valve with a single-sided dynamic seal, which aims to solve the problems of inflexible action and poor sealing performance in the prior art. The hard butterfly valve with the single-sided dynamic seal comprises a valve body, a butterfly plate, a valve seat and a valve stem. The valve stem is fixedly and eccentrically arranged on the butterfly plate; the sealing surface of the butterfly plate is an eccentric conical surface; the taper of the sealing surface of the butterfly plate close to the side with the axis of the valve stem is less than the taper of the sealing surface of the butterfly plate far away from the side with the axis of the valve stem; the matching of the sealing surfaces of the valve seat and the butterfly plate with larger tapers adopts the dynamic seal; the matching of the sealing surfaces of the valve seat and the butterfly plate with smaller tapers adopts the static seal; and the valve seat moves in the preset three-dimensional space. Because the sealing surface of the butterfly plate adopts the eccentric conical surface, and the valve plate rotates around the eccentric valve stem, no excessive sliding friction can be generated; the instant separation or contact of the butterfly plate can be realized through the single-sided dynamic friction; the movement of the valve seat realizes the single-sided dynamic frictional seal in the matching between the valve seat and the butterfly plate, thereby effectively reducing the wear of the sealing surface, prolonging the service life and facilitating the operation; and because the side of the eccentric conical surface with a longer bus has the positioning function, the over operation can not be caused during the closing process to result in the loss of control.
Description
Technical field
The utility model relates to a kind of hard butterfly valve, especially monolateral motive sealing hard butterfly valve.
Background technique
The sealing surface of the butterfly plate of existing monolateral motive sealing hard butterfly valve is a sphere, when valve is in closed condition, utilizes described sphere and metal seat valve closely to contact and realizes hard sealing.Find in the practice that there is following some deficiency in existing monolateral motive sealing hard butterfly valve: the spherical sealing surface processing difficulties of butterfly plate; Be bilateral friction when opening or closing between the sealing surface of butterfly plate and the valve seat, it is big not only to operate moment of torsion, and both sealing surface wears are serious; The axial position of valve seat can not freely be adjusted during assembling, radial position can not be according to the automatic centering of butterfly plate position, positioning tolerance between butterfly plate, valve seat and the valve body three requires harsh, if valve body has distortion or above-mentioned three's positioning tolerance to can not get guaranteeing slightly, will cause seal failure or valve seat and butterfly plate to be killed.In view of there is above-mentioned deficiency in prior art, the monolateral motive sealing hard of special a kind of modified model of invention butterfly valve.
The model utility content
In order to overcome above-mentioned defective, the purpose of this utility model is to provide that a kind of convenient processing and manufacture, operation moment of torsion are little, the monolateral motive sealing hard butterfly valve of long service life and good airproof performance.
In order to achieve the above object, monolateral motive sealing hard butterfly valve of the present utility model, the valve seat that comprises valve body, is arranged on butterfly plate in the valve body, is sealed and matched with butterfly plate and be fixedly installed on valve rod on the butterfly plate, the sealing surface of butterfly plate is the inclined to one side conical surface, the shaft axis of valve rod radially departs from the tube core line of valve body, wherein, the sealing surface tapering of the nearly valve rod shaft axis of described butterfly plate side is less than the tapering of the sealing surface of valve rod shaft axis side far away; The sealing surface that described valve seat and butterfly plate tapering are bigger cooperates and is motive sealing, and cooperating with the less sealing surface of described butterfly plate tapering is static seal; Wherein said valve seat moves in the predetermined three-dimensional space.
Particularly, described valve body one end is provided with groove, and described valve seat is arranged in the groove, and valve seat is outside equipped with the valve gap that is fixed on the valve body, and the axial both sides of described valve seat are provided with rubber-like respectively and adjust pad, and peripheral radial is provided with elastomer.
Wherein, for face contacts, and contact for line between the less sealing surface of described butterfly plate tapering between the sealing surface of described valve seat and the bigger sealing surface of described butterfly plate tapering.
Above-mentioned structure, make the valve rod rotation by operation equipment, thereby driving the butterfly plate rotation contacts with valve base sealing, in the process that butterfly plate is closed or opened, because the butterfly plate sealing surface is the inclined to one side conical surface, valve plate rotates around eccentric valve rod, the excessive sliding friction that occurs as positive conical surface seal pair can not occur and the valve wearing and tearing are reduced greatly, utilizing the tapering difference of butterfly plate sealing cone to make the sealing pair that is constituted with valve seat is monolateral kinetic friction, has the effect that moment breaks away from or contacts, valve seat moves the sealing under realizing dynamically of cooperating can make between butterfly plate and the valve base sealing in three dimensional space, effectively reduce the wearing and tearing of sealing surface, and prolonged the working life of valve, operate also very light, the long side of described inclined to one side cone element has positioning action, is therefore closing closed procedure, can not cause operation and cause close out of control.。
Description of drawings
Fig. 1 is the cross-sectional view of specific embodiment of the utility model.
Fig. 2 is an A-A sectional structure schematic representation among Fig. 1.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1 and Figure 2, monolateral motive sealing hard butterfly valve, the valve seat 4 that comprises valve body 1, is arranged on butterfly plate 2 in the valve body, is sealed and matched with butterfly plate and be fixedly installed on valve rod 3 on the butterfly plate, valve rod top is connected with the operation equipment 9 of handwheel 10, the sealing surface of butterfly plate is the inclined to one side conical surface, the shaft axis of valve rod radially departs from the tube core line of valve body, and wherein, the sealing surface tapering of the nearly valve rod shaft axis of described butterfly plate side is less than the tapering of the sealing surface of valve rod shaft axis side far away; The sealing surface that described valve seat and butterfly plate tapering are bigger cooperates and is motive sealing, and cooperating with the less sealing surface of described butterfly plate tapering is static seal; Wherein said valve seat moves in the predetermined three-dimensional space.
Above-mentioned structure, rotate handwheel and make the valve rod rotation by operation equipment, thereby driving the butterfly plate rotation contacts with valve base sealing, in the process that butterfly plate is closed or opened, because the butterfly plate sealing surface is the inclined to one side conical surface, valve plate rotates around eccentric valve rod, the excessive sliding friction that occurs as positive conical surface seal pair can not occur and the valve wearing and tearing are reduced greatly, utilizing the tapering difference of butterfly plate sealing cone to make the sealing pair that is constituted with valve seat is monolateral kinetic friction, has the effect that moment breaks away from or contacts, valve seat moves in three dimensional space the monolateral kinetic friction that realizes cooperating between butterfly plate and the valve base sealing is dynamically down sealed, effectively reduce the wearing and tearing of sealing surface, prolonged the working life of valve, operate also very light, the long side of described inclined to one side cone element has positioning action, is therefore closing closed procedure, can not cause operation and cause close out of control.
Particularly, described valve body one end is provided with groove, described valve seat is arranged in the groove, valve seat is outside equipped with the valve gap 5 that is fixed on the valve body, the axial upper and lower both sides of described valve seat are provided with rubber-like respectively and adjust pad 6 and adjust pad 8, valve seat is being adjusted pad 6 and is being adjusted under the effect of pad 8 and move down in the axial direction, and peripheral radial is provided with elastomer 7, and valve seat moves in all around radially under the effect of elastomer 7.Moment of rotation is little, and flexible movements are simple in structure, and are easy to manufacture, is convenient to maintenance and reduction manufacture cost and maintenance and repair cost are installed.
Wherein, for face contacts, and contact for line between the less sealing surface of described butterfly plate tapering between the sealing surface of described valve seat and the bigger sealing surface of described butterfly plate tapering.Sealing effect is better.
The utility model is not limited to above-mentioned mode of execution, no matter do any variation on its shape or structure, every to utilize above-mentioned monolateral motive sealing hard butterfly valve all be a kind of distortion of the present utility model, all should think and drop within the utility model protection domain.
Claims (3)
1, a kind of monolateral motive sealing hard butterfly valve, the valve seat that comprises valve body, is arranged on butterfly plate in the valve body, is sealed and matched with butterfly plate and be fixedly installed on valve rod on the butterfly plate, it is characterized in that, the sealing surface of butterfly plate is the inclined to one side conical surface, the shaft axis of valve rod radially departs from the tube core line of valve body, wherein, the sealing surface tapering of the nearly valve rod shaft axis of described butterfly plate side is less than the tapering of the sealing surface of valve rod shaft axis side far away; The sealing surface that described valve seat and butterfly plate tapering are bigger cooperates and is motive sealing, and cooperating with the less sealing surface of described butterfly plate tapering is static seal; Wherein said valve seat moves in the predetermined three-dimensional space.
2, monolateral motive sealing hard butterfly valve according to claim 1, it is characterized in that, described valve body one end is provided with groove, described valve seat is arranged in the groove, valve seat is outside equipped with the valve gap that is fixed on the valve body, the axial both sides of described valve seat are provided with rubber-like respectively and adjust pad, and peripheral radial is provided with elastomer.
3, monolateral motive sealing hard butterfly valve according to claim 1 and 2 is characterized in that, for face contacts, and contacts for line between the less sealing surface of described butterfly plate tapering between the sealing surface of described valve seat and the bigger sealing surface of described butterfly plate tapering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920001007XU CN201335158Y (en) | 2009-01-14 | 2009-01-14 | Hard butterfly valve with single-sided dynamic seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920001007XU CN201335158Y (en) | 2009-01-14 | 2009-01-14 | Hard butterfly valve with single-sided dynamic seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201335158Y true CN201335158Y (en) | 2009-10-28 |
Family
ID=41286809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920001007XU Expired - Fee Related CN201335158Y (en) | 2009-01-14 | 2009-01-14 | Hard butterfly valve with single-sided dynamic seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201335158Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387802A (en) * | 2017-08-31 | 2017-11-24 | 江苏瑞朗博机械设备有限公司 | A kind of bias double ball face sealing valves of built-in compression valve seat |
| CN108916387A (en) * | 2018-09-18 | 2018-11-30 | 启迪桑德环境资源股份有限公司 | For dynamic sealing means of the rotating shaft in uneven radial deformation state |
-
2009
- 2009-01-14 CN CNU200920001007XU patent/CN201335158Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387802A (en) * | 2017-08-31 | 2017-11-24 | 江苏瑞朗博机械设备有限公司 | A kind of bias double ball face sealing valves of built-in compression valve seat |
| CN108916387A (en) * | 2018-09-18 | 2018-11-30 | 启迪桑德环境资源股份有限公司 | For dynamic sealing means of the rotating shaft in uneven radial deformation state |
| CN108916387B (en) * | 2018-09-18 | 2024-04-26 | 启迪环境科技发展股份有限公司 | Dynamic sealing device for a rotary shaft in a non-uniform radial deformation state |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202140584U (en) | Two-way sealing floating type tri-eccentric butterfly valve | |
| CN105422900A (en) | Ball valve with non-contact valve ball and valve seats during rotation | |
| CN201335158Y (en) | Hard butterfly valve with single-sided dynamic seal | |
| CN104482253A (en) | Combined valve | |
| CN102644760B (en) | Sealing structure of ultrahigh-pressure needle valve | |
| CN103994240A (en) | Two-way hard sealing butterfly valve with movable valve seat | |
| CN201382177Y (en) | Partial derivation control ball valve | |
| CN202790630U (en) | Dedicated locking hopper cutting valve for coal chemical industry | |
| CN202100754U (en) | Metal sealing ball valve | |
| CN105318019A (en) | Dual-broken-shaft type high-performance butterfly valve | |
| CN202946708U (en) | Self-compensating electric ball valve based on bellows structure | |
| CN202252163U (en) | High-pressure check valve | |
| CN202056338U (en) | Abrasion-resistant ball valve | |
| CN105318025A (en) | Double-disc wedge gate valve adopting composite spring connection | |
| CN211449689U (en) | Electric wear-resistant dust-gas butterfly valve | |
| CN203857064U (en) | Bidirectional hard-sealing butterfly valve with movable valve seat | |
| CN2639632Y (en) | Spherical double-flashboard ball valve | |
| CN203488744U (en) | All-metal hard seal quickly-closed butterfly valve resistant to high temperature, high pressure and washout | |
| CN204922081U (en) | Ball valve is adjusted to two way seal V type | |
| CN201973269U (en) | Triple eccentric hard seal plug valve | |
| CN218326332U (en) | Eccentric spherical valve with single valve seat | |
| CN220016158U (en) | Electric eccentric half ball valve | |
| CN215172422U (en) | Ball type valve body | |
| CN202209476U (en) | Seal valve for bell-free top device of blast furnace | |
| CN208041163U (en) | A kind of rear end cover structure of heavy caliber recirculated water butterfly valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20130114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |