CN206290725U - Four eccentric sealed butterfly valve constructions - Google Patents

Four eccentric sealed butterfly valve constructions Download PDF

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Publication number
CN206290725U
CN206290725U CN201621375503.8U CN201621375503U CN206290725U CN 206290725 U CN206290725 U CN 206290725U CN 201621375503 U CN201621375503 U CN 201621375503U CN 206290725 U CN206290725 U CN 206290725U
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CN
China
Prior art keywords
valve
sealing
eccentric
sealing ring
centre lines
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
CN201621375503.8U
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Chinese (zh)
Inventor
刘诗梅
周位伟
蒋永兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHONGQING CHUAN INSTRUMENT CONTROL VALVE Co Ltd
Original Assignee
CHONGQING CHUAN INSTRUMENT CONTROL VALVE Co Ltd
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 CHONGQING CHUAN INSTRUMENT CONTROL VALVE Co Ltd filed Critical CHONGQING CHUAN INSTRUMENT CONTROL VALVE Co Ltd
Priority to CN201621375503.8U priority Critical patent/CN206290725U/en
Application granted granted Critical
Publication of CN206290725U publication Critical patent/CN206290725U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of four eccentric sealed butterfly valve constructions, including valve body, valve rod and valve plate, valve rod is arranged on valve body, valve plate is arranged in the valve flowing channel of valve body, and be connected with valve rod, valve plate can be rotated under valve rod drive and is opened and closed with control valve runner, valve flowing channel inwall is provided with the sealing of projection, valve plate neighboring edge is provided with sealing ring, sealing ring forms oblique round platform sealing pair with sealing, the radial centre lines of sealing ring are non-intersect with the axial line of valve rod, the axial line of valve rod is non-intersect with the radial centre lines of valve body, the radial centre lines of valve body are non-intersect with the radial centre lines of valve plate, eccentric angle β is formed between the centre of gyration line and the center line of valve flowing channel of sealing.The utility model can increase the Cv values of valve, and valve negotiability is improved while valve seal performance is ensured, and can reduce eccentric throw, reduce out-of-balance force, reduce the operation moment of torsion of valve, have the advantages that small volume, lightweight, low cost.

Description

Four eccentric sealed butterfly valve constructions
Technical field
The utility model is related to butterfly valve field, more particularly to a kind of four eccentric sealed butterfly valve construction.
Background technology
With industrial expansions such as China's oil, chemical industry, combustion gas, the demand to valve is very huge, simultaneously because work Condition becomes increasingly complex, requirement higher is proposed to the performance of all kinds of valves, it is necessary to valve possess good airproof performance, stability it is high, Leak low, long service life, low torque, small volume, the low function of cost.Sealing property requirement especially to valve is tighter Lattice, therefore it is imperative how to research and develop the sealing structure with high sealing performance.To meet various working condition requirements, possess eccentric close The butterfly valve of seal structure successively experienced the differentiation from concentric butterfly valve to single eccentric-butterfly-valve, double eccentric butterfly valve and three-eccentric-butterfly-valve.It is existing Operationally there be certain three eccentricity sealed butterfly valve between sealing pair generally using the sealing ring with certain elasticity in having technology Gap, can make sealing ring slightly displacement, in valve closing, be acted on by closing forces, and it is most equal that sealing ring can automatically move to stress Even position, along with a small amount of deformation of sealing ring, makes the sealing ring uniform stressed at valve seat, reaches optimal seal state.So And this three eccentricity sealed butterfly valve for sealing auxiliary structure is used, because its sealed section is ellipse, its sealing surface shape is therefore And it is asymmetric, compared with structure of the sealed section for circular, the area of the sealed section of existing structure is smaller, the Cv values of valve Can be more limited and smaller, negotiability of the influence medium in valve;While existing three eccentricity sealed butterfly valve, its The radial disbalance at valve rod center and valve flowing channel center makes valve when opening, because larger radial disbalance is away from product away from larger Raw positive out-of-balance force can be very big, then Open valve needs bigger moment of torsion, and cost is higher.
The content of the invention
In view of this, the purpose of this utility model is to provide a kind of four eccentric sealed butterfly valve constructions, can make valve Cv values increase, and valve negotiability is improved while valve seal performance is ensured, and can reduce eccentric throw, make out-of-balance force Reduce, the operation moment of torsion of valve is reduced, so that valve has the advantages that small volume, lightweight, low cost.
Four eccentric sealed butterfly valve construction of the present utility model, including valve body, valve rod and valve plate, valve is provided with the valve body Runner, the valve rod is pivotally arranged on valve body, and the valve plate is arranged in valve flowing channel, and valve plate and valve rod Connection, the valve plate can be rotated under valve rod drive and is opened and closed with control valve runner, edge on the inwall of described valve flowing channel one end The sealing of projection is circumferentially with, the valve plate neighboring is along the sealing ring being provided with both seals cooperation, the sealing Ring forms oblique round platform sealing pair with sealing, and the radial centre lines of the sealing ring are non-intersect with the axial line of valve rod, the valve The axial line of bar is non-intersect with the radial centre lines of valve body, the radial centre lines of the valve body and the radial centre lines of valve plate not phase Hand over, eccentric angle β is formed between the centre of gyration line and the center line of valve flowing channel of the sealing.
Further, the sealing ring is oblique frustum cone structure of the section in circular, and two of sealing ring are any perpendicular to valve The oblique round platform sealing pair of section constitution that the plane of door runner center line is crossed to form with both seals face.
Further, any section perpendicular to sealing centre of gyration line of the oblique round platform sealing pair is circular.
Further, the conical surface of the sealing ring is dynamic sealing face, and the sealing surface of sealing is quiet with what dynamic sealing face coordinated Sealing surface.
Further, the valve plate neighboring edge is provided with the annular groove for loading sealing ring, and the sealing ring passes through trim ring pressure Dress is fixed in the annular groove of valve plate, and sealing ring outer wall is stretched out outside annular groove.
Further, the distance between axial line of the radial centre lines of the sealing ring and valve rod forms the first eccentric, institute State the distance between the axial line of valve rod and the radial centre lines of valve body and form second eccentric, the radial centre lines of the valve body with The distance between radial centre lines of valve plate form three eccentricity, the centre of gyration line of the sealing and the center of valve flowing channel It is eccentric that eccentric angle β between line forms the 4th.
Further, the distance of the three eccentricity is 0.5~1mm.
Further, the eccentric angle β between the centre of gyration line and the center line of valve flowing channel of the sealing be 10~ 15°。
The beneficial effects of the utility model:Four eccentric sealed butterfly valve construction of the present utility model, by setting four bias Auxiliary structure is sealed with oblique round platform, the torsion sealing of triple eccentric seat sealing system can not only be realized, fully rely on sealing ring and sealing Contact face pressure reach sealing effectiveness, and the offset distance between the axial line of valve rod and valve flowing channel center line can be made by more than ten Individual millimeter is reduced to 1~2 millimeter, increases the Cv values of valve, and valve circulation energy is improved while valve seal performance is ensured Power, and by reducing eccentric throw, reduce out-of-balance force, the operation moment of torsion of valve is reduced, so that valve has volume Small, lightweight, low cost advantage.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings and examples:
Fig. 1 is structural representation of the present utility model.
Specific embodiment
Fig. 1 is structural representation of the present utility model, as shown in the figure:The four eccentric sealed butterfly valve constructions of the present embodiment, bag Include in valve body 1, valve rod 2 and valve plate 3, the valve body 1 and be provided with valve flowing channel, the valve rod 2 is pivotally arranged on valve On body 1, the valve plate 3 is arranged in valve flowing channel, and valve plate 3 is connected with valve rod 2, and the valve plate 3 can turn under the drive of valve rod 2 It is dynamic to be opened and closed with control valve runner, realize being controlled the circulation of medium in valve;On the inwall of described valve flowing channel one end Circumferentially arranged with raised sealing 1a, the neighboring of the valve plate 3 seals the sealing ring 4 of cooperation along being provided with sealing 1a, The sealing ring 4 forms oblique round platform sealing pair, the area of any one positive round tee section of oblique round platform sealing pair with sealing 1a Elliptical cross-sectional area compared with three eccentricity structure is bigger, makes this valve compared with existing three-eccentric-butterfly-valve, with bigger Cv Value, Cv values are bigger, and negotiability of the medium fluid in valve flowing channel is stronger;The radial centre lines c and valve rod of the sealing ring 4 2 axial line d is non-intersect, and the axial line d of the valve rod 2 is non-intersect with the radial centre lines f of valve body 1, the radial direction of the valve body 1 Center line f is non-intersect with the radial centre lines e of valve plate 3, the centre of gyration line a of the sealing 1a and the center line of valve flowing channel Eccentric angle β is formed between b, four eccentric structures are realized, to improve the sealing property and operating performance of valve.
In the present embodiment, the sealing ring 4 is oblique frustum cone structure of the section in circular, the oblique round platform of the present embodiment be by The solid that the central axis deviation angle α of positive round platform is formed, deviation angle α is equal with eccentric angle β;Two of sealing ring 4 Any plane perpendicular to valve flowing channel center line b and the oblique round platform sealing of the section constitution that sealing 1a sealing surfaces are crossed to form Pair, to realize valve seal performance.
In the present embodiment, any section perpendicular to sealing centre of gyration line a of the oblique round platform sealing pair is positive round Shape, makes oblique round platform sealing pair distribution of force uniform, increases the service life.
In the present embodiment, the conical surface of the sealing ring is dynamic sealing face, and the sealing surface of sealing is to coordinate with dynamic sealing face Static seal face, be engaged with the static seal face of sealing 1a by the dynamic sealing face of sealing ring 4, realize sealing property, improve Sealing effectiveness.
In the present embodiment, the neighboring of the valve plate 3 passes through along the annular groove being provided with for loading sealing ring 4, the sealing ring 4 Trim ring 5 press-fits and is fixed in the annular groove of valve plate 3, and the outer wall of sealing ring 4 is stretched out outside annular groove, and it is firm to connect, and is easy to assembling.
In the present embodiment, the distance between the radial centre lines c of the sealing ring 4 and axial line d of valve rod 2 forms first The distance between eccentric L1, the axial line d of the valve rod 2 and the radial centre lines f of valve body 1 form the second bias L2, the valve The distance between the radial centre lines f of body 1 and radial centre lines e of valve plate 3 forms three eccentricity L3, and the sealing 1a's returns Turn the eccentric angle β between center line a and the center line b of valve flowing channel and form the 4th bias, make the axial line d of valve rod and valve stream Offset distance between road center line b is reduced to 1~2 millimeter by more than ten millimeter, increases the Cv values of valve, is ensureing valve seal Valve negotiability is improved while performance.
In the present embodiment, the distance of the three eccentricity L3 is 0.5~1mm, the axial line d of the valve rod 2 of the present embodiment with The distance between radial centre lines f of valve body 1, and the distance between the axial line d and the radial centre lines e of valve plate 3 of valve rod 2 are deposited In the difference of 0.5~1mm, the difference of the 0.5~1mm is the distance of three eccentricity L3, and the distance of three eccentricity L3 can basis The parameters such as the specification and model of valve are adjusted between 0.5~1mm, so that the structure of valve realizes optimized design, are passed through Reduce eccentric throw, reduce out-of-balance force, reduce the operation moment of torsion of valve.
In the present embodiment, the eccentric angle β between the centre of gyration line a of the sealing 1a and the center line b of valve flowing channel It it is 10~15 °, to improve the sealing property and operating performance of valve.
Finally illustrate, above example is only used to illustrate the technical solution of the utility model and unrestricted, although ginseng The utility model has been described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this The technical scheme of utility model is modified or equivalent, without deviating from the objective and model of technical solutions of the utility model Enclose, it all should cover in the middle of right of the present utility model.

Claims (8)

1. a kind of four eccentric sealed butterfly valve is constructed, including valve body, valve rod and valve plate, and valve flowing channel is provided with the valve body, described Valve rod is pivotally arranged on valve body, and the valve plate is arranged in valve flowing channel, and valve plate is connected with valve rod, described Valve plate can be rotated under valve rod drive and is opened and closed with control valve runner, it is characterised in that:On the inwall of described valve flowing channel one end Circumferentially arranged with raised sealing, the valve plate neighboring is described close along the sealing ring being provided with both seals cooperation Seal ring forms oblique round platform sealing pair with sealing, and the radial centre lines of the sealing ring are non-intersect with the axial line of valve rod, described The axial line of valve rod is non-intersect with the radial centre lines of valve body, and the radial centre lines of the valve body are with the radial centre lines of valve plate not It is intersecting, it is formed with eccentric angle β between the centre of gyration line and the center line of valve flowing channel of the sealing.
2. according to claim 1 four eccentric sealed butterfly valves are constructed, it is characterised in that:The sealing ring is that section is in positive round The oblique frustum cone structure of shape, two any planes perpendicular to valve flowing channel center line of sealing ring intersect shape with both seals face Into the oblique round platform sealing pair of section constitution.
3. according to claim 2 four eccentric sealed butterfly valves are constructed, it is characterised in that:The oblique round platform sealing pair it is any It is circular perpendicular to the section of sealing centre of gyration line.
4. according to claim 3 four eccentric sealed butterfly valves are constructed, it is characterised in that:The conical surface of the sealing ring is dynamic close Front cover, the sealing surface of sealing is the static seal face coordinated with dynamic sealing face.
5. according to claim 4 four eccentric sealed butterfly valves are constructed, it is characterised in that:The valve plate neighboring edge is provided with use In the annular groove for loading sealing ring, the sealing ring is press-fited by trim ring and is fixed in the annular groove of valve plate, and sealing ring outer wall stretches out Outside annular groove.
6. according to claim 1 four eccentric sealed butterfly valves are constructed, it is characterised in that:The radial centre lines of the sealing ring Form first eccentric with the distance between the axial line of valve rod, between the axial line of the valve rod and the radial centre lines of valve body Distance forms second eccentric, and the formation the 3rd of the distance between the radial centre lines of the valve body and radial centre lines of valve plate is inclined The heart, it is eccentric that the eccentric angle β between the centre of gyration line and the center line of valve flowing channel of the sealing forms the 4th.
7. according to claim 6 four eccentric sealed butterfly valves are constructed, it is characterised in that:The distance of the three eccentricity is 0.5~1mm.
8. according to claim 6 four eccentric sealed butterfly valves are constructed, it is characterised in that:The centre of gyration line of the sealing Eccentric angle β and the center line of valve flowing channel between is 10~15 °.
CN201621375503.8U 2016-12-15 2016-12-15 Four eccentric sealed butterfly valve constructions Expired - Fee Related CN206290725U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621375503.8U CN206290725U (en) 2016-12-15 2016-12-15 Four eccentric sealed butterfly valve constructions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621375503.8U CN206290725U (en) 2016-12-15 2016-12-15 Four eccentric sealed butterfly valve constructions

Publications (1)

Publication Number Publication Date
CN206290725U true CN206290725U (en) 2017-06-30

Family

ID=59104471

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621375503.8U Expired - Fee Related CN206290725U (en) 2016-12-15 2016-12-15 Four eccentric sealed butterfly valve constructions

Country Status (1)

Country Link
CN (1) CN206290725U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110953354A (en) * 2019-12-23 2020-04-03 河源孚罗泰自控阀门有限公司 Four-eccentric butterfly valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110953354A (en) * 2019-12-23 2020-04-03 河源孚罗泰自控阀门有限公司 Four-eccentric butterfly valve
CN110953354B (en) * 2019-12-23 2021-10-15 河源孚罗泰自控阀门有限公司 Four-eccentric butterfly valve

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170630

Termination date: 20191215