CN206668986U - A kind of butterfly valve for preventing unilateral compression seepage - Google Patents
A kind of butterfly valve for preventing unilateral compression seepage Download PDFInfo
- Publication number
- CN206668986U CN206668986U CN201720255192.XU CN201720255192U CN206668986U CN 206668986 U CN206668986 U CN 206668986U CN 201720255192 U CN201720255192 U CN 201720255192U CN 206668986 U CN206668986 U CN 206668986U
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- CN
- China
- Prior art keywords
- valve
- valve body
- hole
- cushion rubber
- ring
- 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
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Abstract
It the utility model is related to valve field, a kind of more particularly to butterfly valve for preventing unilateral compression seepage, including valve body, valve seat in valve body, valve rod and valve plate in valve seat, by the way that valve base sealing cushion rubber retainer plate and valve seat is joined integrally, and valve base sealing cushion rubber is fixed within valve rod and valve base sealing cushion rubber retainer plate, be effectively ensured valve plate is unilateral be pressurized when, the relative position of valve rod and valve seat is fixed, prevent valve seat and valve rod because compression deformation produce gap, caused by valve leakage.
Description
Technical field
Valve field is the utility model is related to, more particularly to a kind of butterfly valve for preventing unilateral compression seepage.
Background technology
Butterfly valve is called flap valve, is a kind of regulating valve simple in construction, what the switch available for low pressure pipeline medium controlled
Butterfly valve refers to that closure member (flap or butterfly plate) is disk, a kind of valve of open and close is reached around valve shaft rotation, valve can
For controlling all kinds such as empty gas and water, steam, various Korrosionsmediums, mud, oil product, liquid metal and radiating medium
The flowing of fluid.
Valve is in close contact by valve plate edge and valve seat realizes sealing when closed, and valve rod is passed through at the hole in valve seat
Seepage is prevented by rubber seal rings for seal, and some soft valve seats are when by unilateral pressure, valve plate is under pressure and band
Ovable valve stem extrudes valve seat and sealing ring so that valve seat and sealing ring are deformed upon, and valve rod is offset to compression side, in this case
The squeeze side of valve rod and valve seat and sealing ring is relatively also easy to produce gap, causes butterfly valve seepage, influences the sealing property of valve.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, there is provided one kind prevents list
The butterfly valve of side compression seepage.
The utility model is to be achieved by the following technical programs：
A kind of butterfly valve for preventing unilateral compression seepage, including valve body, the valve seat in valve body, valve rod and valve in valve seat
Plate, wherein,
Hole on valve body is provided with the upside of the valve body, downside is provided with valve body lower opening, and valve rod upper end hole from valve body passes,
Valve stem top, which is provided with, fixes stepped stem, and the gland by being fixed on body top is fixed, and hole inwall is on the downside of gland on valve body
Provided with upper O-ring groove, upper O-ring is provided with upper O-ring groove；
It is provided with upper neck alloy sheath, valve rod upper end and hole on valve body on valve rod upper end and valve body between hole on the downside of upper O-ring
Between be provided with valve body alloy sheath above valve seat；
The body base after bore end is provided with valve body block up, after the portion of blocking be provided with lower O-ring groove, lower O-ring is recessed
Lower O-ring is provided with groove, valve body lower opening is stretched into the valve rod lower end, and pressure bearing is provided between lower end valve rod and valve body lower opening,
Rear block up is provided with distance adjustor between stem bottom, and the distance adjustor includes the top between being located at stem bottom and blocking up afterwards
Block, collar and the jackscrew below jacking block, the jacking block top are provided with resigning concave station, the collar ring set resigning concave station, top
Circle top contacts higher than resigning concave station and with valve rod bottom, and stifled center is provided with top wire hole after described, and the jackscrew is matched somebody with somebody with top wire hole
Close；
Be provided with hole on valve seat on the upside of the valve seat, downside is provided with valve seat lower opening, on valve seat at hole and valve stem contacts top and
Valve seat lower opening is equipped with valve base sealing cushion rubber with bottom at valve stem contacts and valve base sealing cushion rubber retainer plate, the O-ring seal are consolidated
Fixed circle is quoit, and inner side is provided with valve base sealing cushion rubber groove of the opening towards valve rod, and the valve base sealing cushion rubber is stuck in valve
In seat O-ring seal groove.
The valve base sealing cushion rubber retainer plate is provided with fixing lug boss in the one or both sides of valve base sealing cushion rubber groove.
The jackscrew winds raw material band.
The valve stem top is provided with square key the beneficial effects of the utility model：
By the way that valve base sealing cushion rubber retainer plate and valve seat is joined integrally, and valve base sealing cushion rubber is fixed on valve rod and valve
Within seat O-ring seal retainer plate, it is effectively ensured in the unilateral compression of valve plate, the relative position of valve rod and valve seat is fixed, and prevents valve
Seat with valve rod because compression deformation generation gap, caused by valve leakage.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is superstructure schematic diagram of the present utility model.
Fig. 3 is substructure schematic diagram of the present utility model.
Fig. 4 is valve base sealing cushion rubber and valve base sealing cushion rubber fixed ring schematic diagram of the present utility model.
In figure：1. valve body, 2. valve seats, 3. valve rods, 4. valve plates, 5. fix stepped stems, 6. glands, O-ring on 7., neck on 8.
Alloy sheath, 9. valve body alloy sheaths, block up after 10., 11. times O-rings, 12. pressure bearings, 13. jacking blocks, 14. collars, 15. jackscrews,
16. resigning concave station, 17. valve base sealing cushion rubbers, 18. valve base sealing cushion rubber retainer plates, 19. fixing lug boss.
Embodiment
In order that those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings
The utility model is described in further detail with most preferred embodiment.
As illustrated, the utility model includes valve body 1, the valve seat 2 in valve body, valve rod 3 and valve plate 4 in valve seat,
Wherein,
Hole on valve body is provided with the upside of the valve body, downside is provided with valve body lower opening, and valve rod upper end hole from valve body passes,
Valve stem top, which is provided with, fixes stepped stem 5, and the gland 6 by being fixed on body top is fixed, and hole inwall is under gland on valve body
Side is provided with upper O-ring groove, and upper O-ring 7 is provided with upper O-ring groove；
The diameter of valve stem top is reduced to form fixing stepped stem, and gland is secured by bolts in body top, and its middle part is set
There is hole clipping, stepped stem card column will be fixed；
It is provided with upper neck alloy sheath 8, valve rod upper end and hole on valve body on valve rod upper end and valve body between hole on the downside of upper O-ring
Between be provided with valve body alloy sheath 9 above valve seat；
The body base blocks up 10 after bore end is provided with valve body, after the portion of blocking be provided with lower O-ring groove, lower O-ring
Lower O-ring 11 is provided with groove, the valve rod lower end stretches into valve body lower opening, pressure axis is provided between lower end valve rod and valve body lower opening
12 are held, stifled after described that distance adjustor is provided between stem bottom, the distance adjustor is included located at stem bottom with blocking up it afterwards
Between jacking block 13, collar 14 and the jackscrew 15 below jacking block, the jacking block top are provided with resigning concave station 16, the collar ring
Resigning concave station is covered, collar top contacts higher than resigning concave station and with valve rod bottom, and stifled center is provided with top wire hole, the top after described
Silk coordinates with top wire hole；
The diameter on jacking block top reduces to form resigning concave station, and collar is located on the realization of resigning concave station and connect with the close of jacking block
Touch, and collar upper end and valve stem contacts.
Upper neck alloy sheath, valve body alloy sheath reduce the friction of valve rod and valve body with pressure bearing；
The relative position of distance adjustor regulating valve stem, valve plate and valve seat, ensure its tight ness rating to cooperate；Pass through jackscrew
The precession or back-out for the top wire hole being provided with are blocked up after, jackscrew upper end withstands jacking block and collar and drives its movement, is adjusted so as to realize
Section；
Be provided with hole on valve seat on the upside of the valve seat, downside is provided with valve seat lower opening, on valve seat at hole and valve stem contacts top and
Valve seat lower opening is equipped with valve base sealing cushion rubber 17 and valve base sealing cushion rubber retainer plate 18, the fluid sealant with bottom at valve stem contacts
Circle retainer plate is quoit, and inner side is provided with valve base sealing cushion rubber groove of the opening towards valve rod, the valve base sealing cushion rubber card
In in valve base sealing cushion rubber groove.
Valve base sealing cushion rubber retainer plate is molded by Shooting Technique and valve body, and sidewall edge and the valve rod of its groove connect
Touch so that when valve rod is under pressure, pressure is shown delivered directly to valve base sealing cushion rubber retainer plate, and valve base sealing cushion rubber is fixed
The firm fixation of circle higher than inside valve seat, will not being shifted over or deformation easily so that the valve seat in valve base sealing cushion rubber groove
O-ring seal will not be squeezed, therefore it still ensures that good sealing property when being squeezed with valve rod, will not occur
Seepage.
Preferably, the valve base sealing cushion rubber retainer plate is provided with fixed convex in the one or both sides of valve base sealing cushion rubber groove
Platform 19, it act as the contact area for expanding valve base sealing cushion rubber retainer plate and valve rod, the stability of the two contact of enhancing, enters one
The displacement of valve rod when preventing from being pressurized of step；
Preferably, jackscrew winding raw material band, ensures the sealing of jackscrew；
Preferably, the valve stem top is provided with square key, coordinates with the governor motion on top, is easy to the tune to valve rod, valve plate
Section；
By the way that valve base sealing cushion rubber retainer plate and valve seat is joined integrally, and valve base sealing cushion rubber is fixed on valve rod and valve
Within seat O-ring seal retainer plate, it is effectively ensured in the unilateral compression of valve plate, the relative position of valve rod and valve seat is fixed, and prevents valve
Seat with valve rod because compression deformation generation gap, caused by valve leakage.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (4)
- A kind of 1. butterfly valve for preventing unilateral compression seepage, it is characterised in that including valve body, the valve seat in valve body, in valve seat Valve rod and valve plate, wherein,Hole on valve body is provided with the upside of the valve body, downside is provided with valve body lower opening, and valve rod upper end hole from valve body passes, valve rod Top, which is provided with, fixes stepped stem, and the gland by being fixed on body top is fixed, and hole inwall is provided with the downside of gland on valve body Upper O-ring groove, upper O-ring groove is interior to be provided with upper O-ring；Upper neck alloy sheath is provided with valve rod upper end and valve body between hole on the downside of upper O-ring, on valve rod upper end and valve body between hole Valve body alloy sheath is provided with above valve seat；The body base blocks up after bore end is provided with valve body, after the portion of blocking be provided with lower O-ring groove, in lower O-ring groove Provided with lower O-ring, valve body lower opening is stretched into the valve rod lower end, and pressure bearing is provided between lower end valve rod and valve body lower opening, described Blocking up afterwards and distance adjustor is provided between stem bottom, the distance adjustor includes the jacking block between being located at stem bottom and blocking up afterwards, Collar and the jackscrew below jacking block, the jacking block top are provided with resigning concave station, the collar ring set resigning concave station, on collar Portion contacts higher than resigning concave station and with valve rod bottom, and stifled center is provided with top wire hole after described, and the jackscrew coordinates with top wire hole；It is provided with hole on valve seat on the upside of the valve seat, downside is provided with valve seat lower opening, top and valve seat at hole and valve stem contacts on valve seat Lower opening is equipped with valve base sealing cushion rubber and valve base sealing cushion rubber retainer plate, the O-ring seal retainer plate with bottom at valve stem contacts For quoit, and inner side is provided with valve base sealing cushion rubber groove of the opening towards valve rod, and it is close that the valve base sealing cushion rubber is stuck in valve seat In sealing rubber ring groove.
- A kind of 2. butterfly valve for preventing unilateral compression seepage according to claim 1, it is characterised in that the valve base sealing glue Circle retainer plate is provided with fixing lug boss in the one or both sides of valve base sealing cushion rubber groove.
- A kind of 3. butterfly valve for preventing unilateral compression seepage according to claim 1, it is characterised in that the jackscrew winding life Material strip.
- 4. a kind of butterfly valve for preventing unilateral compression seepage according to claim 1, it is characterised in that the valve stem top is set There is square key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720255192.XU CN206668986U (en) | 2017-03-15 | 2017-03-15 | A kind of butterfly valve for preventing unilateral compression seepage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720255192.XU CN206668986U (en) | 2017-03-15 | 2017-03-15 | A kind of butterfly valve for preventing unilateral compression seepage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206668986U true CN206668986U (en) | 2017-11-24 |
Family
ID=60376558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720255192.XU Expired - Fee Related CN206668986U (en) | 2017-03-15 | 2017-03-15 | A kind of butterfly valve for preventing unilateral compression seepage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206668986U (en) |
-
2017
- 2017-03-15 CN CN201720255192.XU patent/CN206668986U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20180315 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |