CN207830570U - Butterfly valve - Google Patents
Butterfly valve Download PDFInfo
- Publication number
- CN207830570U CN207830570U CN201721892295.3U CN201721892295U CN207830570U CN 207830570 U CN207830570 U CN 207830570U CN 201721892295 U CN201721892295 U CN 201721892295U CN 207830570 U CN207830570 U CN 207830570U
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- Prior art keywords
- valve
- screw
- lock
- disc holder
- valve seat
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Abstract
The utility model provides a kind of butterfly valve, including：Valve body, valve plate and valve seat, the valve plate are installed on by valve rod in the valve body, and the valve seat is seal-installed on by valve base sealing component in the valve body, and the valve base sealing component includes：Disc holder, locating ring and lock-screw, the valve body are equipped with locating slot, and the locating ring is caught in the locating slot and resists the disc holder, and the lock-screw passes through the disc holder with the disc holder screw-thread fit and one end resists the valve seat.The utility model butterfly valve, screw fixed valve base is locked by disc holder and locating ring, ensure the bearing capacity of valve seal pair, ensure sealing effect, the width of valve seat and disc holder can design relatively small, screw can also select smaller diameter due to being solely subjected to pressure (non-pressure), in the case where valve seal pair does not reduce bearing capacity, it is ensured that maximum negotiability and higher flow coefficient C V.
Description
Technical field
The utility model is related to valve field more particularly to a kind of butterfly valves.
Background technology
Valve seat is one of the main member of valve seal pair, and the pressure from interior media is constantly born during use
With wash away, fixed reliability then directly affect valve overall performance play.The valve seat of metallic seal butterfly valve usually has
Two kinds of fixed forms form the valve seat of changeable type one is valve seat (or its fixed plate) to be threadedly coupled between valve body
Structure；It is another then directly by valve seat be welded on valve body formed be permanently fixed.More and more metal butterfly valves use spiral shell now
The replaceable mode of line connection, to reduce the use cost of valve.For the butterfly valve of identical bore, with valve nominal pressure
It improving, the thrust that valve seat is born significantly increases, and the screw sizes and quantity for fixed valve base also all inevitably increase, this
Weaken the bearing capacity of valve seal pair again to a certain extent；In order to ensure that the reliable of this ability then needs to be forced to select
Reduce valve gate diameter, reduce negotiability, reduces flow coefficient C V values.
Utility model content
Purpose of the utility model is to solve the above problems, provide a kind of butterfly valve, both can ensure that valve seal pair
Bearing capacity, it is ensured that sealing effect ensures that the negotiability of valve.
In order to achieve the above object, the utility model provides a kind of butterfly valve, including：Valve body, valve plate and valve seat, the valve plate
It is installed in the valve body by valve rod, the valve seat is seal-installed on by valve base sealing component in the valve body, the valve
Seat seal assembly include：Disc holder, locating ring and lock-screw, the valve body are equipped with locating slot, and the locating ring is caught in institute
The disc holder is stated in locating slot and resists, the lock-screw passes through the valve seat pressure with the disc holder screw-thread fit
Plate and one end resist the valve seat.
In one embodiment of the utility model, the lock-screw includes the first lock-screw and the second lock-screw, institute
State the first lock-screw and the disc holder screw-thread fit and one end resist the valve seat, second lock-screw with it is described
Disc holder screw-thread fit and one end resist the other end of the lock-screw.
In one embodiment of the utility model, the dimensions phase of first lock-screw and second lock-screw
Together.
In one embodiment of the utility model, there are one the openings disconnected for the locating ring tool.
In one embodiment of the utility model, the locating ring is made of steel.
In one embodiment of the utility model, banking stop is installed on the valve seat, the valve body corresponds to the banking stop
Equipped with limiting slot, the banking stop is inserted into the limiting slot to be limited to the valve seat.
Further include valve plate sealing ring, valve plate sealing ring pressing plate and valve plate sealing ring in one embodiment of the utility model
Gland, the valve plate sealing ring, the valve plate sealing ring pressing plate and the valve plate sealing ring gland are pressed in the valve plate successively
Outside, the valve plate sealing ring gland is by screw lock on the valve plate.
Compared with prior art, the advantageous effect of the technical program is：
The utility model butterfly valve locks screw fixed valve base, it is ensured that valve is close by disc holder and locating ring
Seal secondary bearing capacity, it is ensured that the width of sealing effect, valve seat and disc holder can design relatively small, and screw is due to only
Smaller diameter can also be selected by bearing pressure (non-pressure), thus in the case where valve seal pair does not reduce bearing capacity,
Ensure maximum negotiability and higher flow coefficient C V.
Description of the drawings
Fig. 1 is the front view of an embodiment of the utility model butterfly valve；
Fig. 2 is the sectional view of an embodiment of the utility model butterfly valve；
Fig. 3 is the partial enlarged view at A in Fig. 2；
Fig. 4 is the partial enlarged view of another embodiment of the utility model butterfly valve；
Fig. 5 is the structural schematic diagram of an embodiment of the locating ring of the utility model butterfly valve.
Specific implementation mode
Below in conjunction with the accompanying drawings, by specific embodiment, to the technical solution of the utility model carry out it is clear, completely retouch
It states.
It please referring to Fig.1 shown in -3, the utility model provides a kind of butterfly valve, including：Valve body 1, valve plate 2 and valve seat 3, the valve
Plate 2 is installed on by valve rod 4 in the valve body 1, and the valve seat 3 is seal-installed on by valve base sealing component in the valve body 1.
The valve base sealing component includes：Disc holder 51, locating ring 52 and lock-screw 53, the valve body 1 are equipped with locating slot 101,
The locating ring 52 is caught in the locating slot 101 and resists the disc holder 51, the lock-screw 53 and the valve seat
51 screw-thread fit of pressing plate passes through the disc holder 51 and one end resists the valve seat 3.In the utility model, disc holder 51
One end is pushed against by locating ring 52 and valve body 1 to be coordinated, and the other end is pushed against by lock-screw 53 and valve body 1 to be coordinated, to valve seat
3 are fixedly installed in valve body 1, form good sealing effect.The utility model butterfly valve passes through disc holder 51 and locating ring 52
Lock 53 fixed valve base 3 of screw, it is ensured that the width of the bearing capacity of valve seal pair, valve seat 3 and disc holder 51 can
With the relatively small of design, screw can also select smaller diameter due to being solely subjected to pressure (non-pressure), to close in valve
In the case that envelope pair does not reduce bearing capacity, it is ensured that maximum negotiability and higher flow coefficient C V.The valve base sealing
Component be particularly suitable for heavy caliber, high pressure grade metallic seal butterfly valve, have extraordinary sealing effect.
The lock-screw 53 includes the first lock-screw 531 and the second lock-screw 532, first lock-screw
531 resist the valve seat 3, second lock-screw 532 and the valve seat with 51 screw-thread fit of the disc holder and one end
51 screw-thread fit of pressing plate and one end resist the other end of the lock-screw 531.When assembly, first by valve seat 3,51 and of disc holder
3 locating ring 52 of valve seat is sequentially loaded into valve body 1, is then screwed into the first lock-screw 53, when one end of the first lock-screw 53 is supported
Firmly first lock-screw 53 can not continue to move towards valve seat 3 when valve seat 3, continue to rotate the first lock-screw 53 then at this time so that valve
(direction i.e. far from valve seat 3) is mobile in the opposite direction for seat 3, then pushes locating ring 52 to move and be caught in locating slot 101, directly
It is clamped to locating ring 52, then has reached the standard torque of screw at this time, disc holder 51 can not continue towards the side far from valve seat 3
To movement, valve seat 3 is locked in valve body 1 at this time, is then screwed into the second lock-screw 532 so that the second lock-screw 532
One end resist the first lock-screw 531, which can play the work for preventing the first lock-screw 531 from loosening
With to ensure being fixedly connected between valve seat 3 and valve body 1 and sealing effect.
First lock-screw 531 is identical with the dimensions of second lock-screw 532.In use, not needing
First lock-screw 531 and the second lock-screw 532 are distinguished, are more favorable for assembling.
It please refers to shown in Fig. 5, there are one the openings 521 disconnected for the tool of the locating ring 52.The opening 521 is arranged to make
Locating ring 52 has certain elasticity, so as to successfully be caught in locating slot 101, and is caught in locating slot 101 and is not easy later
It is dropped out from locating slot 101, to ensure that positioning action of the locating ring 52 to disc holder 51.
The locating ring 52 is made of steel, has preferable rigid, to form good sealing, and is used
Long lifespan.
In one embodiment, as shown in figure 4, being equipped with banking stop 31 on the valve seat 3, the valve body 1 corresponds to the limit
Piece 31 is equipped with limiting slot 102, and the banking stop 31 is inserted into the limiting slot 102 and is limited with the valve seat 3, and the valve seat is prevented
3 rotations, consequently facilitating installing disc holder 51 when assembly.
The butterfly valve further includes valve plate sealing ring 21, valve plate sealing ring pressing plate 22 and valve plate sealing ring gland 23, described
Valve plate sealing ring 21, the valve plate sealing ring pressing plate 22 and 23 gland of valve plate sealing ring are pressed in the valve plate 2 successively
Outside, the valve plate sealing ring gland 23 is by screw lock on the valve plate 2.
Although the utility model has been described by way of example and in terms of the preferred embodiments, but it is not for limiting the utility model, appointing
What those skilled in the art without departing from the spirit and scope of the utility model, may be by the method and skill of the disclosure above
Art content makes possible variation and modification to technical solutions of the utility model, therefore, every without departing from the utility model technology
The content of scheme, it is made by the above technical examples according to the technical essence of the present invention it is any it is simple modification, equivalent variations and
Modification, belongs to the protection domain of technical solutions of the utility model.
Claims (7)
1. a kind of butterfly valve, including：Valve body, valve plate and valve seat, the valve plate are installed on by valve rod in the valve body, and feature exists
In the valve seat is seal-installed on by valve base sealing component in the valve body, and the valve base sealing component includes：Valve seat pressure
Plate, locating ring and lock-screw, the valve body are equipped with locating slot, and the locating ring is caught in the locating slot and resists the valve
Seat pressing plate, the lock-screw passes through the disc holder with the disc holder screw-thread fit and one end resists the valve seat.
2. butterfly valve according to claim 1, which is characterized in that the lock-screw includes the first lock-screw and the second lock
Tight screw, first lock-screw and the disc holder screw-thread fit and one end resist the valve seat, second locking
Screw and the disc holder screw-thread fit and one end resist the other end of the lock-screw.
3. butterfly valve according to claim 2, which is characterized in that first lock-screw and second lock-screw
Dimensions is identical.
4. butterfly valve according to claim 1, which is characterized in that there are one the openings disconnected for the locating ring tool.
5. butterfly valve according to claim 1, which is characterized in that the locating ring is made of steel.
6. butterfly valve according to claim 1, which is characterized in that be equipped with banking stop on the valve seat, the valve body corresponds to
The banking stop is equipped with limiting slot, and the banking stop is inserted into the limiting slot to be limited to the valve seat.
7. butterfly valve according to claim 1, which is characterized in that further include valve plate sealing ring, valve plate sealing ring pressing plate and
Valve plate sealing ring gland, the valve plate sealing ring, the valve plate sealing ring pressing plate and the valve plate sealing ring gland compress successively
In the outside of the valve plate, the valve plate sealing ring gland is by screw lock on the valve plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721892295.3U CN207830570U (en) | 2017-12-29 | 2017-12-29 | Butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721892295.3U CN207830570U (en) | 2017-12-29 | 2017-12-29 | Butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207830570U true CN207830570U (en) | 2018-09-07 |
Family
ID=63390666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721892295.3U Active CN207830570U (en) | 2017-12-29 | 2017-12-29 | Butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207830570U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956888A (en) * | 2017-12-29 | 2018-04-24 | 博雷（中国）控制系统有限公司 | Butterfly valve |
-
2017
- 2017-12-29 CN CN201721892295.3U patent/CN207830570U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956888A (en) * | 2017-12-29 | 2018-04-24 | 博雷（中国）控制系统有限公司 | Butterfly valve |
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| GR01 | Patent grant |