CN104455490A - Two-way pressure butterfly valve with elliptic seal surfaces - Google Patents

Two-way pressure butterfly valve with elliptic seal surfaces Download PDF

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Publication number
CN104455490A
CN104455490A CN201410761792.4A CN201410761792A CN104455490A CN 104455490 A CN104455490 A CN 104455490A CN 201410761792 A CN201410761792 A CN 201410761792A CN 104455490 A CN104455490 A CN 104455490A
Authority
CN
China
Prior art keywords
valve
center line
butterfly
seal
movable
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.)
Pending
Application number
CN201410761792.4A
Other languages
Chinese (zh)
Inventor
董侠均
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.)
JIANGSU LOTOKE VALVE CO Ltd
Original Assignee
JIANGSU LOTOKE 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 JIANGSU LOTOKE VALVE CO Ltd filed Critical JIANGSU LOTOKE VALVE CO Ltd
Priority to CN201410761792.4A priority Critical patent/CN104455490A/en
Publication of CN104455490A publication Critical patent/CN104455490A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226Shaping or arrangements of the sealing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32Details

Abstract

The invention relates to a two-way pressure butterfly valve with elliptic seal surfaces. The two-way pressure butterfly valve comprises a valve body, a movable valve seat, a butterfly plate and a valve rod. The valve rod comprises a valve flow passage with a valve flow passage center line extending horizontally, the movable valve seat is mounted in the valve body, the butterfly plate is fixedly connected with the lower end of the valve rod, the movable valve seat is positioned on one side of the butterfly plate which is provided with a movable seal ring, the movable seal ring is fixed onto the butterfly plate through a butterfly pressure ring and internally provided with a valve seat seal surface, the movable seal ring is further circumferentially provided with a seal ring seal surface which is matched with the valve seat seal surface to form a seal pair for sealing the valve, and the seal pair is an elliptic seal pair. The valve seat seal surface forms a part of an oblique elliptic pyramid inclined relative to the valve flow passage center line, the valve flow passage center line is below the axial center lien of the elliptic seal pair, and the vertex is positioned below the valve flow passage center line. The two-way pressure butterfly valve with the elliptic seal surfaces has the advantages of simple structure, avoidance of friction between the seal surfaces, effectiveness in sealing, corrosion resistance, long service life, reduction of flow passage area, close torque and model selection cost of an execution mechanism, convenience in mounting and excellent centering performance.

Description

Oval sealing surface Bidirectional pressure butterfly valve
Technical field
The present invention relates to a kind of Bidirectional pressure butterfly valve, particularly relate to oval sealing surface Bidirectional pressure butterfly valve, belong to butterfly valve field.
Background technique
At present in known butterfly valve technology, its seal form many employings sealing configuration sealing material is rubber, teflon, multi-level composite material etc.Due to the restriction of structure characteristic, be not suitable with high temperature resistant, high pressure and corrosion-resistant, the bad working environments such as to resistance to wear.The hard sealed valve of industrial High Temperature High Pressure is mainly based on gate valve, stop valve, and this type of valve major defect is: valve is all upper and lower opening structure, and the weight of valve own is large, and cost is high, and in-site installation space is large.
Current elliptical cone three eccentric butterfly valve has started to popularize, and can substitute above costs high, lifting type cut-off valve, elliptical cone three eccentric butterfly valve, sealed section area is comparatively large, and required required specific pressure increases, close moment also just to increase, also increasing accordingly of drive unit.It is poor that oval sealing width installs centering, installs more loaded down with trivial details.
Summary of the invention
For above-mentioned defect, the object of the present invention is to provide a kind of structure simple, without friction between sealing surface, good sealing effect, corrosion-resistant, the oval sealing surface Bidirectional pressure butterfly valve of long service life, can Flow area be reduced, reduce closing torque, reduce actuator's type selecting cost, and easy for installation, centering is good.
The technical solution adopted in the present invention is for this reason:
Comprise valve body, movable valve seat, butterfly plate and valve rod, valve body comprises the valve flowing channel of the valve flowing channel center line with horizontal-extending, movable valve seat is installed in valve body, butterfly plate is fixedly connected with valve rod lower end, movable valve seat is positioned at butterfly plate side, butterfly plate is provided with loose gland, loose gland is fixed on butterfly plate by butterfly plate pressure ring, sealing surface of seat is provided with in movable valve seat, loose gland circumferentially has to match with sealing surface of seat and forms the seal ring seal face of the sealing pair sealing this valve, described sealing pair is oval sealing pair, described sealing surface of seat forms a part for the tilting elliptical cone of this valve flowing channel lack of alignment relative, the triangular-section that summit in described tilting elliptical cone and oval bottom surface major axis thereof coexist is coplanar and vertical with this valve rod axis with described valve flowing channel center line, described valve rod axis is positioned at below oval sealing pair longitudinal center line, valve flowing channel center line is positioned at below oval sealing pair longitudinal center line, described summit is positioned at below valve flowing channel center line.
Described summit is between the horizontal line of valve flowing channel center line and described triangular-section intersection point crossing with loose gland lower end.
Described summit is positioned at below the horizontal line of described triangular-section intersection point crossing with loose gland lower end.
Described summit is positioned on the horizontal line of described triangular-section intersection point crossing with loose gland lower end.
Advantage of the present invention is:
Structure of the present invention is simple, and without friction between sealing surface, good sealing effect, corrosion-resistant, long service life, can reduce Flow area, reduces closing torque, reduces actuator's type selecting cost, and easy for installation, and centering is good.
Accompanying drawing explanation
Fig. 1, Fig. 2, Fig. 3 are structural representations of the present invention.
In figure, 1 be valve body, 2 are movable valve seat, 3 are dish plates, 4 are valve rods, 5 are valve flowing channel center lines, 6 are loose glands, 7 are butterfly plate pressure rings, 8 is oval sealing pair longitudinal center lines.
Embodiment
Oval sealing surface Bidirectional pressure butterfly valve, comprise valve body 1, movable valve seat 2, butterfly plate 3 and valve rod 4, valve body 1 comprises the valve flowing channel of the valve flowing channel center line 5 with horizontal-extending, movable valve seat 2 is installed in valve body 1, butterfly plate 3 is fixedly connected with valve rod 4 lower end, movable valve seat 2 is positioned at butterfly plate 3 side, butterfly plate 3 is provided with loose gland 6, loose gland 6 is fixed on butterfly plate 3 by butterfly plate pressure ring 7, sealing surface of seat is provided with in movable valve seat 2, loose gland 6 circumferentially has to match with sealing surface of seat and forms the seal ring seal face of the sealing pair sealing this valve, described sealing pair is oval sealing pair, described sealing surface of seat forms a part for the tilting elliptical cone of this valve flowing channel center line 5 deflection relative, the triangular-section that summit in described tilting elliptical cone and oval bottom surface major axis thereof coexist and described valve flowing channel center line 5 coplanar and with this valve rod 4 axes normal, described valve rod 4 axis is positioned at below oval sealing pair longitudinal center line 8, valve flowing channel center line 5 is positioned at below oval sealing pair longitudinal center line 8, described summit is positioned at below valve flowing channel center line 5.
Described summit is at valve flowing channel center line 5 with between described triangular-section and the horizontal line of the crossing intersection point in loose gland 6 lower end.
Described summit is positioned at described triangular-section with below the horizontal line of the crossing intersection point in loose gland 6 lower end.
Described summit is positioned at described triangular-section with on the horizontal line of the crossing intersection point in loose gland 6 lower end.

Claims (4)

1. oval sealing surface Bidirectional pressure butterfly valve, comprise valve body, movable valve seat, butterfly plate and valve rod, valve body comprises the valve flowing channel of the valve flowing channel center line with horizontal-extending, movable valve seat is installed in valve body, butterfly plate is fixedly connected with valve rod lower end, movable valve seat is positioned at butterfly plate side, butterfly plate is provided with loose gland, loose gland is fixed on butterfly plate by butterfly plate pressure ring, sealing surface of seat is provided with in movable valve seat, loose gland circumferentially has to match with sealing surface of seat and forms the seal ring seal face of the sealing pair sealing this valve, it is characterized in that, described sealing pair is oval sealing pair, described sealing surface of seat forms a part for the tilting elliptical cone of this valve flowing channel lack of alignment relative, the triangular-section that summit in described tilting elliptical cone and oval bottom surface major axis thereof coexist is coplanar and vertical with this valve rod axis with described valve flowing channel center line, described valve rod axis is positioned at below oval sealing pair longitudinal center line, valve flowing channel center line is positioned at below oval sealing pair longitudinal center line, described summit is positioned at below valve flowing channel center line.
2. oval sealing surface Bidirectional pressure butterfly valve according to claim 1, is characterized in that, described summit is between the horizontal line of valve flowing channel center line and described triangular-section intersection point crossing with loose gland lower end.
3. oval sealing surface Bidirectional pressure butterfly valve according to claim 1, it is characterized in that, described summit is positioned at below the horizontal line of described triangular-section intersection point crossing with loose gland lower end.
4. oval sealing surface Bidirectional pressure butterfly valve according to claim 1, it is characterized in that, described summit is positioned on the horizontal line of described triangular-section intersection point crossing with loose gland lower end.
CN201410761792.4A 2014-12-12 2014-12-12 Two-way pressure butterfly valve with elliptic seal surfaces Pending CN104455490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410761792.4A CN104455490A (en) 2014-12-12 2014-12-12 Two-way pressure butterfly valve with elliptic seal surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410761792.4A CN104455490A (en) 2014-12-12 2014-12-12 Two-way pressure butterfly valve with elliptic seal surfaces

Publications (1)

Publication Number Publication Date
CN104455490A true CN104455490A (en) 2015-03-25

Family

ID=52902013

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410761792.4A Pending CN104455490A (en) 2014-12-12 2014-12-12 Two-way pressure butterfly valve with elliptic seal surfaces

Country Status (1)

Country Link
CN (1) CN104455490A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110375077A (en) * 2019-07-23 2019-10-25 四川苏克流体控制设备有限公司 A kind of forced seal ultralow temperature butterfly valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110375077A (en) * 2019-07-23 2019-10-25 四川苏克流体控制设备有限公司 A kind of forced seal ultralow temperature butterfly valve

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PB01 Publication
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150325