CN205479391U - Two -way hard -sealed butterfly valve - Google Patents
Two -way hard -sealed butterfly valve Download PDFInfo
- Publication number
- CN205479391U CN205479391U CN201620299832.2U CN201620299832U CN205479391U CN 205479391 U CN205479391 U CN 205479391U CN 201620299832 U CN201620299832 U CN 201620299832U CN 205479391 U CN205479391 U CN 205479391U
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- valve
- plate
- valve body
- described valve
- valve seat
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Abstract
The utility model provides a two -way hard -sealed butterfly valve belongs to butterfly valve technical field. It has solved current butterfly valve two way seal effect subalternation technical problem. This butterfly valve includes valve rod, valve plate and valve body, and the valve plate is located the valve body, and valve rod one end is connected with the valve plate and can drives the valve plate rotates, is equipped with the disk seat in the valve body, and medial surface that the valve plate is located disk seat and disk seat can form sealedly with the outer peripheral face of valve plate, has the clearance between disk seat and the valve body and just is equipped with the sealing washer in this clearance. The utility model provides a butterfly valve is through reserving the clearance between disk seat and valve body to set up the sealing washer in this clearance, when the needs forward was sealed, the sealing washer sealed to leaning on to have formed on disk seat and valve body respectively, and the medium in the valve body has the impact force, will promote the disk seat and press the trend to the dish board, thereby form good sealing, vice versa has compensatied owing to the problem that unbalance moment caused the dish board to break away from the disk seat like this, can realize the two way seal.
Description
Technical field
This utility model belongs to valve kind equipment technical field, relates to a kind of butterfly valve, particularly
A kind of two-way hard seal butterfly valve.
Background technology
Butterfly valve is again flap valve, is the regulation valve of a kind of simple in construction, can be used for low-voltage tube
The on-off control of track media, the closure member (flap or butterfly plate) of butterfly valve is disk, and disk encloses
Rotate around valve shaft and reach to open and close, valve can be used for controlling sky gas and water, steam,
Various Korrosionsmediums, mud, oil product, liquid metal and radiating medium etc. are various types of
The flowing of type fluid, acts primarily as cut-out and throttling action on pipeline.Metal hard-sealing butterfly
Valve uses double eccentric structure, and spool is little with prooving of valve seat amount, owing to there being double eccentric structure,
So valve plate has unbalanced moments, when fluid forces valve closing, can aid in close
Envelope, but during reverse fluid flow, it is impossible to realize sealing or increase the difficulty realizing sealing.
China's patent (notification number: CN2751190, publication date: 2006-01-11) is open
A kind of Two-Way Hard-Sealed Butterfly Valve, including valve body, butterfly plate and valve rod, the inner chamber of valve body is right
Portion is provided with valve seat, and the lateral surface of valve seat is with leaving between the medial surface of valve body between mobile cooperation
Gap, the right side of valve seat is the step that valve body is positioned on the right of body cavity, the left side of valve seat
Being provided with the compression spring it pressed to the right, valve seat is provided with cone-shaped endoporus, this endoporus
The centrage of centrage and body cavity overlaps, and butterfly plate is positioned at valve body, and fixing peace
Being contained on valve rod, the lateral surface of butterfly plate is provided with sealing surface, this sealing surface and valve seat inner conical surface
On sealing surface match, form sealing pair, valve rod through the upper valve rod hole on valve body top,
Insert body cavity, the bearing of trend of valve rod and the central axis of body cavity.
In two-way butterfly valve disclosed in above-mentioned patent documentation, structure is complicated, it is achieved two way seal
Weak effect.
Summary of the invention
The problems referred to above that this utility model exists for existing technology, it is provided that one is two-way firmly
Sealed butterfly valve, technical problem to be solved in the utility model is: how to ensure the double of butterfly valve
To sealing effectiveness.
The purpose of this utility model can be realized by following technical proposal:
A kind of two-way hard seal butterfly valve, including valve rod, valve plate and valve body, described valve plate position
In described valve body, described valve rod one end is connected with described valve plate and can drive described
Valve plate rotates, it is characterised in that being provided with valve seat in described valve body, described valve plate is positioned at institute
State in valve seat and the medial surface of described valve seat can be formed close with the outer peripheral face of described valve plate
Envelope, is provided with sealing ring in having gap and this gap between described valve seat and described valve body.
Its principle is as follows: this butterfly valve by between valve seat and valve body preset clearance, and
Arranging sealing ring in this gap, when needs forward seals, sealing ring bears against at valve
Defining sealing on seat and valve body, the medium in valve body has impulsive force, will promote valve
Seat presses to the trend of dish plate, thus forms good sealing；Vice versa, so makes up
Owing to unbalanced moments causes the problem that dish plate departs from valve seat, it is possible to achieve two way seal.
The unbalanced moments that overcomes butterfly valve in the technical program causes can only one-way sealing
Situation, above-mentioned valve seat disposal molding, by installing sealing ring, by Jie on valve seat
The thrust of matter, forward and reversely can realize valve seat and press against to shrouding, thus real
Existing two way seal.
In above-mentioned two-way hard seal butterfly valve, described valve seat include two ends parallel portion and
It is positioned at the middle rake connecting parallel portion, described valve body is also associated with pressing plate, described
The end of one parallel portion of valve seat is connected with described pressing plate, the end of another parallel portion
Being connected with described valve body, described sealing ring is between described rake and pressing plate.
In above-mentioned two-way hard seal butterfly valve, pass through between described pressing plate and described valve body
Housing screw is connected.By housing screw, valve seat is pressed against by pressing plate,
Good sealing can be formed with valve seat when valve plate is closed, and sealing ring is entered by pressing plate
Row is spacing, prevents it from coming off.
In above-mentioned two-way hard seal butterfly valve, described valve rod and described valve plate pin joint and institute
State valve rod eccentric setting double with described valve plate.Butterfly plate center, the most inclined had both been deviateed in valve rod axle center
Center from valve flowing channel；After the effect of double bias makes valve be unlocked, butterfly plate can immediately take off
From valve seat, eliminate butterfly plate and valve seat significantly unnecessary excessive compression and scraping
Phenomenon, alleviate unlatching resistance away from, reduce abrasion, improve longer seat life.Valve rod phase
X-axis and Y-axis for conduit have an offset respectively, and such valve plate is being closed
With opening procedure has a process gradually extruded with valve seat, this design can ensure that
Valve is when opening or closing, and valve plate can cut off the particulate matter of deposition on valve seat.
In above-mentioned two-way hard seal butterfly valve, described valve seat uses metal material to make and valve
Seating face has hardened layer.Metal seat valve is for having containing the bad working environments of more particulate matter very well
Adaptability, by making valve seat wear-resistant after cure process, improve service life.
Compared with prior art, the butterfly valve in this utility model by valve seat and valve body it
Between preset clearance, and sealing ring is set in this gap, by the thrust of medium, forward
Reversely can realize valve seat to press against to shrouding, thus realize two way seal.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of this butterfly valve.
Fig. 2 is the structural representation during forward sealing in Fig. 1 at A.
Fig. 3 is structural representation when reversely sealing in Fig. 1 at A.
In figure, 1, valve rod；2, valve plate；3, valve body；4, valve seat；41, parallel portion；
42, rake；5, sealing ring；6, pressing plate；7, housing screw.
Detailed description of the invention
In order to make those skilled in the art be better understood from this utility model scheme, below
The accompanying drawing in this utility model embodiment will be combined, to the skill in this utility model embodiment
Art scheme carries out clear, complete description, it is clear that described embodiment is only this
A part of embodiment of utility model rather than whole embodiments.New based on this practicality
Embodiment in type, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, all should belong to the scope of this utility model protection.
As shown in Figure 1, Figure 2 and Figure 3, this two-way hard seal butterfly valve includes valve rod 1, valve
Plate 2 and valve body 3, valve plate 2 is positioned at valve body 3, and valve rod 1 one end is connected with valve plate 2
Connecing and valve plate 2 can be driven to rotate, being provided with valve seat 4 in valve body 3, valve plate 2 is positioned at valve
Interior and valve seat 4 the medial surface of seat 4 can be formed with the outer peripheral face of valve plate 2 and seal, valve seat
It is provided with sealing ring 5 in there is between 4 and valve body 3 gap and this gap；Specifically, valve
Seat 4 includes the parallel portion 41 at two ends and is positioned at the middle rake 42 connecting parallel portion 41,
Pressing plate 6 it is also associated with, the end of a parallel portion 41 of valve seat 4 and pressing plate on valve body 3
6 connect, and the end of another parallel portion 41 is connected with valve body 3, and sealing ring 5 is positioned at and inclines
Tiltedly between portion 42 and pressing plate 6.Between this butterfly valve is by reserving between valve seat 4 and valve body 3
Gap, and sealing ring 5 is set in this gap, when needs forward seals, sealing ring 5
Bearing against and define sealing on valve seat 4 and valve body 3, the medium in valve body 3 has
Impulsive force, will promote valve seat 4 to press to the trend of dish plate, thus form good sealing；
Vice versa, so compensate for owing to unbalanced moments causes dish plate to depart from asking of valve seat 4
Topic, it is possible to achieve two way seal.The unbalanced moments that overcomes this butterfly valve causes can only be unidirectional
Situation about sealing, above-mentioned valve seat 4 disposal molding, seal by installing on valve seat 4
Circle 5, by the thrust of medium, forward and reversely can to realize valve seat 4 crowded to shrouding
Against, thus realize two way seal.
As it is shown in figure 1, be connected by housing screw 7 between pressing plate 6 with valve body 3,
By housing screw 7, valve seat 4 is pressed against by pressing plate 6, when valve plate 2 closes
Good sealing can be formed with valve seat 4 when closing, and sealing ring 5 is carried out by pressing plate 6
Spacing, prevent it from coming off.
In the present embodiment, valve rod 1 sets with valve plate 2 pin joint and 2 pairs of bias of valve rod 1 and valve plate
Putting, valve rod 1 axle center had both been deviateed butterfly plate center, had been also offset from the center of valve body 3 runner；Double
After eccentric effect makes valve be unlocked, butterfly plate can immediately depart from valve seat 4, disappear significantly
Except unnecessary excessive compression and the phenomenon of swiping of butterfly plate and valve seat 4, alleviate unlatching
Hinder away from, reduce abrasion, improve valve seat 4 life-span.Valve rod 1 is managed relative to valve body 3
The X-axis in road and Y-axis have an offset respectively, and such valve plate 2 is being closed and opened
Have a process gradually extruded in journey with valve seat 4, this design can ensure that valve exists
When opening or closing, valve plate 2 can cut off the particulate matter of deposition on valve seat 4；Valve seat
4 employing metal materials make and valve seat 4 surface has hardened layer.Metal seat valve 4 for
Well adapting to property of bad working environments containing more particulate matter, by making after cure process
Valve seat 4 is wear-resistant, improves service life.
On the premise of without departing substantially from marrow of the present utility model, technology belonging to this utility model
The technical staff in field described specific embodiment can be made various amendment or
Supplement or use similar mode to substitute, but without departing from spirit of the present utility model or
Person surmounts scope defined in appended claims.
Claims (5)
1. a two-way hard seal butterfly valve, including valve rod (1), valve plate (2) and valve body
(3), described valve plate (2) is positioned at described valve body (3), described valve rod (1) one end
It is connected with described valve plate (2) and described valve plate (2) can be driven to rotate, its feature
Being, be provided with valve seat (4) in described valve body (3), described valve plate (2) is positioned at described
In valve seat (4) and the medial surface of described valve seat (4) can be with described valve plate (2) outside
Side face formed seal, have between described valve seat (4) and described valve body (3) gap and
Sealing ring (5) it is provided with in this gap.
Two-way hard seal butterfly valve the most according to claim 1, it is characterised in that institute
State valve seat (4) include the parallel portion (41) at two ends and be positioned at middle connection parallel portion (41)
Rake (42), described valve body (3) is also associated with pressing plate (6), described valve seat
(4) end of a parallel portion (41) is connected with described pressing plate (6), another
The end of parallel portion (41) is connected with described valve body (3), described sealing ring (5) position
Between described rake (42) and pressing plate (6).
Two-way hard seal butterfly valve the most according to claim 2, it is characterised in that institute
State and be connected by housing screw (7) between pressing plate (6) with described valve body (3).
4. according to the two-way hard seal butterfly valve described in claim 1 or 2 or 3, its feature
It is, described valve rod (1) and described valve plate (2) pin joint and described valve rod (1) and institute
State valve plate (2) double eccentric setting.
5. according to the two-way hard seal butterfly valve described in claim 1 or 2 or 3, its feature
Being, described valve seat (4) uses metal material to make and valve seat (4) surface has firmly
Change layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620299832.2U CN205479391U (en) | 2016-04-12 | 2016-04-12 | Two -way hard -sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620299832.2U CN205479391U (en) | 2016-04-12 | 2016-04-12 | Two -way hard -sealed butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205479391U true CN205479391U (en) | 2016-08-17 |
Family
ID=56644227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620299832.2U Expired - Fee Related CN205479391U (en) | 2016-04-12 | 2016-04-12 | Two -way hard -sealed butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205479391U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332321A (en) * | 2019-08-13 | 2019-10-15 | 天津卡尔斯阀门股份有限公司 | A kind of double eccentric hard sealed flange butterflies |
| CN114576409A (en) * | 2020-11-30 | 2022-06-03 | 中国石油天然气集团有限公司 | Butterfly valve |
-
2016
- 2016-04-12 CN CN201620299832.2U patent/CN205479391U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332321A (en) * | 2019-08-13 | 2019-10-15 | 天津卡尔斯阀门股份有限公司 | A kind of double eccentric hard sealed flange butterflies |
| CN114576409A (en) * | 2020-11-30 | 2022-06-03 | 中国石油天然气集团有限公司 | Butterfly valve |
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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: 20160817 Termination date: 20170412 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |