CN202171011U - Bidirectional metal sealing butterfly valve - Google Patents

Bidirectional metal sealing butterfly valve Download PDF

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Publication number
CN202171011U
CN202171011U CN2011202362009U CN201120236200U CN202171011U CN 202171011 U CN202171011 U CN 202171011U CN 2011202362009 U CN2011202362009 U CN 2011202362009U CN 201120236200 U CN201120236200 U CN 201120236200U CN 202171011 U CN202171011 U CN 202171011U
Authority
CN
China
Prior art keywords
valve
seat insert
valve seat
plate
seal 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
Application number
CN2011202362009U
Other languages
Chinese (zh)
Inventor
朱培元
Original Assignee
朱培元
杨清强
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 朱培元, 杨清强 filed Critical 朱培元
Priority to CN2011202362009U priority Critical patent/CN202171011U/en
Application granted granted Critical
Publication of CN202171011U publication Critical patent/CN202171011U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a bidirectional metal sealing butterfly valve, which comprises a valve body, a valve plate and a valve rod combined with the valve body, wherein a compression ring is connected to the valve body; a positioning table is arranged on the valve body; a valve seat insert is arranged between the compression ring and the positioning table; the valve seat insert is mounted on the external circumference of the valve plate; a O-shaped sealing ring is arranged between the valve seat insert and the valve body. The O-shaped sealing ring of the bidirectional metal sealing butterfly valve can be moved in the valve seat insert; when medium is pressed inwards in positive direction, the O-shaped sealing ring is pushed by the medium; the valve seat insert is tightly compressed by the O-shaped sealing ring so that the valve plate is sealed; when the medium is pressed inwards in reverse direction, the valve seat insert is pushed so that the valve seat insert and the O-shaped sealing ring are tightly compressed. Compared with rubber sealing rings, the sealing ring of the bidirectional metal sealing butterfly valve is uneasy to be distorted and has long service life and high stability.

Description

Bidirectional metallic seal butterfly valve
Technical field
The utility model relates to a kind of seal butterfly valve, is specifically related to a kind of bidirectional sealed butterfly valve.
Background technique
Butterfly valve is produced the just history in 40 years in China's design; Metallic sealing butterfly valve just more than two decades is historical; Mostly existing metallic sealing butterfly valve is one-way sealing, and sealing surface is two way sealed requirement " L " type, " O " type, that three eccentric metal butterfly valves all can't reach equal pressure level.Unidirectional metallic sealing butterfly valve is of great use in the unidirectional pipeline of the medium in stationary power source, in the pipeline of not clear power source two-way flow, just can't reach customer requirements.And when using as two way sealed with rubber sealing, seal ring is prone to compressive strain even dislocation, and its stability is not high.So the high bidirectional metallic seal butterfly valve of stability becomes one of target of people's pursuit.
The model utility content
The technical problem that the utility model will solve is that existing rubber bidirectional sealed butterfly valve stability is not high, provides a kind of stability high bidirectional metallic seal butterfly valve.
The technological scheme of the utility model realizes in the following manner: a kind of bidirectional metallic seal butterfly valve; Comprise valve body, valve plate, the valve rod that combines with valve body; Be connected with pressure ring on the valve body, valve body is provided with positioning table, is provided with valve seat insert between pressure ring and the positioning table; Valve seat insert is located on the valve plate excircle, is provided with the O RunddichtringO between valve seat insert and the valve body.
Seal ring side plate I and seal ring side plate II that said valve seat insert combines as a whole by the seal ring base plate, with the seal ring base plate form, and the angle of the angle of seal ring base plate and seal ring side plate I, seal ring base plate and seal ring side plate II is the obtuse angle.
Said pressure ring is provided with the installation step hole of the mounting hole and the fastening screw trip bolt of Cock screw.
Built-up welding has stainless steel lining on the outer peripheral surface of said valve plate.
Said O RunddichtringO is an O type rubber ring.
The O RunddichtringO of the utility model can jump in valve seat insert, and medium is from the forward entrance pressure time, and medium promotes the O RunddichtringO, and the O RunddichtringO compresses valve seat insert makes valve plate reach sealing; In the time of the reverse entrance pressure of medium, medium promotes valve seat insert makes valve seat insert and O RunddichtringO compress, and has finally realized sealing effect.Compare with rubber seal, the seal ring of the utility model is not yielding, its long service life, and stability is high.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of pressure ring among Fig. 1.
Fig. 3 is the cross-sectional schematic of valve seat insert among Fig. 1.
Fig. 4 is the enlarged diagram in I zone among Fig. 1.
Embodiment
Shown in accompanying drawing; A kind of bidirectional metallic seal butterfly valve comprises valve body 1, valve plate 6, the valve rod 7 that combines with valve body 1, is connected with pressure ring 3 on the valve body 1; Valve body 1 is provided with positioning table 1-1; Be provided with valve seat insert 5 between pressure ring 3 and the positioning table 1-1, valve seat insert 5 is located on valve plate 6 excircles, is provided with O RunddichtringO 4 between valve seat insert 5 and the valve body 1.Said valve seat insert 5 is metal seat valve seal rings.
Said valve seat insert 5 is as shown in Figure 3; The seal ring side plate I 5-2 and the seal ring side plate II 5-3 that combine as a whole by seal ring base plate 5-1, with seal ring base plate 5-1 form, and the angle β of the angle of seal ring base plate 5-1 and seal ring side plate I 5-2, seal ring base plate 5-1 and seal ring side plate II 5-3 is the obtuse angle.
Like this, can make that O RunddichtringO 4 can hold out against valve seat insert 5 when motion so that between the valve seat insert 5, valve body 1 inboard an acute angle angle is arranged.
Said pressure ring 3 is provided with the mounting hole 3-1 of Cock screw 8 and the installation step hole 3-2 of fastening screw trip bolt 2.In order to guarantee the sealing force of valve plate 6 and valve seat insert 5, do not increase the moment of torsion when opening and closing simultaneously, need in valves test, adjust the distance of pressure ring 3 and valve seat insert.At this moment, Cock screw 8 plays positioning action, after adjusting to suitable distance, through fastening screw trip bolt 2 pressure ring 3 and valve body 1 is locked.
Built-up welding has stainless steel lining on the outer peripheral surface of said valve plate 6.Because valve plate mostly 6 is a carbon steel structure, its corrosion resistance and wear-resisting property are bad, on the valve plate outer peripheral surface, after the built-up welding stainless steel lining, can increase the decay resistance and the wear-resisting property of valve plate 6.
Said O RunddichtringO 4 is O type rubber rings.
In the utility model, the outer peripheral surface of valve plate 6 is tapered, and under the effect of pressure, seal ring 5 is pressed on the conical surface of valve plate 6, and seal ring 5 is a potted line with valve plate 6 position contacting.The utility model is that metal seat valve seal ring 5 is put between the positioning table 1-1 and pressure ring 3 on the valve body 1; Put into the O RunddichtringO in the valve seat insert 5, valve seat insert 5 cylindricals keep certain clearance with valve body, make medium can get into valve seat insert 5 back sides smoothly; And front and back are unsteady up and down about ability; When butterfly plate 6 was in the closed position, valve seat insert 5 can be followed play displacement before and after the butterfly plate position, makes the potted line of valve seat insert 5 can touch butterfly plate cylindrical ball face sealing face.This valve seat insert moulding is connected together just like two butterfly springs, so seal ring has suitable elasticity, and the moment of torsion in the time of reducing the butterfly valve keying, and potted line can not be hindered by hard draw in the protection opening-closing process.Set " O " type rubber ring can stop medium to leak from the valve base sealing circle back side.
The utility model is provided with valve seat insert between valve body 1 and valve plate 6, be provided with O RunddichtringO 4 in the valve seat insert 5, and the valve seat insert two ends head on by the boss on pressure ring and the valve body respectively, and its sealing principle is following:
1. when medium at valve body forward entrance pressure the time, valve plate 6 moves and drives valve seat insert 5 corresponding accompany movements, and valve seat insert 5 left ends are withstood by pressure ring 3 end faces, and valve plate 6 has arrived sealing station at this moment.Medium can get in the valve seat insert 5, and medium promotes the acute angle corner between " O " RunddichtringO 4 to seal ring side plate 5-2 and the valve body 1, makes the sealing surface of valve seat insert 5 be close on the valve plate 6 cylindrical ball face sealing faces, has also reached sealing.At this moment butterfly valve has just reached sealing fully.
When medium when the valve front end oppositely gets into, play displacement to the back-end when valve plate 6 is closed, valve seat insert 5 is also displacement to the back-end under the effect of medium, and the potted line on the valve seat insert 5 still is attached on the valve plate 6 cylindrical ball face sealing faces.Medium promotes valve seat insert 5, also makes to promote valve seat insert indirectly in the acute angle corner that O RunddichtringO 4 arrives between valve body 1 and the seal ring side plate 5-2.In brief, when medium oppositely got into, the sealing force of valve plate was that medium promotes valve seat insert 5 acquisitions, so this butterfly valve can be realized bidirectional metal sealing.

Claims (5)

1. bidirectional metallic seal butterfly valve; Comprise valve body (1), valve plate (6), the valve rod (7) that combines with valve body (1); It is characterized in that: be connected with pressure ring (3) on the valve body (1), valve body (1) is provided with positioning table (1-1), is provided with valve seat insert (5) between pressure ring (3) and the positioning table (1-1); Valve seat insert (5) is located on valve plate (6) excircle, is provided with O RunddichtringO (4) between valve seat insert (5) and the valve body (1).
2. bidirectional metallic seal butterfly valve according to claim 1; It is characterized in that: seal ring side plate I (5-2) and seal ring side plate II (5-3) that said valve seat insert (5) combines as a whole by seal ring base plate (5-1), with seal ring base plate (5-1) form, and the angle of the angle of seal ring base plate (5-1) and seal ring side plate I (5-2), seal ring base plate (5-1) and seal ring side plate II (5-3) is the obtuse angle.
3. bidirectional metallic seal butterfly valve according to claim 1 is characterized in that: said pressure ring (3) is provided with the installation step hole (3-2) of the mounting hole (3-1) and the fastening screw trip bolt (2) of Cock screw (8).
4. bidirectional metallic seal butterfly valve according to claim 1 is characterized in that: built-up welding has stainless steel lining on the outer peripheral surface of said valve plate (6).
5. according to the described bidirectional metallic seal butterfly valve of one of claim 1 ~ 4, it is characterized in that: said O RunddichtringO (4) is an O type rubber ring.
CN2011202362009U 2011-07-06 2011-07-06 Bidirectional metal sealing butterfly valve Expired - Fee Related CN202171011U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202362009U CN202171011U (en) 2011-07-06 2011-07-06 Bidirectional metal sealing butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202362009U CN202171011U (en) 2011-07-06 2011-07-06 Bidirectional metal sealing butterfly valve

Publications (1)

Publication Number Publication Date
CN202171011U true CN202171011U (en) 2012-03-21

Family

ID=45829207

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011202362009U Expired - Fee Related CN202171011U (en) 2011-07-06 2011-07-06 Bidirectional metal sealing butterfly valve

Country Status (1)

Country Link
CN (1) CN202171011U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102865377A (en) * 2011-07-06 2013-01-09 朱培元 Double-way metal seal butterfly valve
CN103363134A (en) * 2013-08-02 2013-10-23 铜陵市兴达阀门总厂 High-reliability bi-directional hard sealing butterfly valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102865377A (en) * 2011-07-06 2013-01-09 朱培元 Double-way metal seal butterfly valve
CN103363134A (en) * 2013-08-02 2013-10-23 铜陵市兴达阀门总厂 High-reliability bi-directional hard sealing 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: 20120321

Termination date: 20150706

EXPY Termination of patent right or utility model