CN110081189B - Bidirectional three-eccentric butterfly valve - Google Patents
Bidirectional three-eccentric butterfly valve Download PDFInfo
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- CN110081189B CN110081189B CN201910403890.3A CN201910403890A CN110081189B CN 110081189 B CN110081189 B CN 110081189B CN 201910403890 A CN201910403890 A CN 201910403890A CN 110081189 B CN110081189 B CN 110081189B
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- cavity
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- connecting pipe
- air inlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift 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
- F16K1/16—Lift 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
- F16K1/18—Lift 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
- F16K1/22—Lift 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift 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
- F16K1/16—Lift 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
- F16K1/18—Lift 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
- F16K1/22—Lift 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
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift 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
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift 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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
Abstract
The invention discloses a bidirectional triple eccentric butterfly valve, which comprises a valve body and a valve seat, wherein the valve body is provided with a first valve seat and a second valve seat; a left inlet connecting pipe and a right inlet connecting pipe are respectively arranged on two sides of the valve seat and are respectively communicated with the left upper air inlet and the right upper air inlet; the valve body upper portion is provided with the control box, set up the cross-section in the control box and be fan-shaped cavity, set up the pressure boost board in the cavity, pressure boost board one end and valve rod fixed connection, pressure boost board divide the cavity into the pressure boost chamber of one side and the pressure release chamber of opposite side. The invention utilizes the pressure of medium to generate acting force on the pressure increasing plate, and the pressure increasing plate generates torque on the valve rod, thereby applying additional acting force on the valve plate, increasing the sealing specific pressure between the sealing surface of the valve plate and the sealing surface of the valve seat, improving the sealing effect, having the same pressure increasing effect when reversely connected, realizing the effect of bidirectional strengthened sealing, and solving the problem that the existing triple eccentric butterfly valve only has good one-way sealing property.
Description
Technical Field
The invention relates to a valve, in particular to a bidirectional three-eccentric butterfly valve.
Background
The triple eccentric butterfly valve can be applied to the industries of petroleum, chemical engineering, electric power and the like. The metal hard seal butterfly valve with three geometric eccentric structures is sealed by using torque and applied to severe working conditions.
The existing triple offset butterfly valve only has the characteristic of good one-way sealing performance, namely if a medium enters the inner cavity of the butterfly valve from the inlet of the valve, the valve has good sealing performance when being closed, but if the medium enters the inner cavity of the butterfly valve from the outlet side of the valve, the valve cannot keep good sealing performance.
Disclosure of Invention
The present invention is directed to a bidirectional triple offset butterfly valve, which solves the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a bidirectional triple eccentric butterfly valve comprises a valve body and a valve seat, wherein a valve plate is arranged in the valve body, the valve plate is fixed on a valve rod, and the valve body is fixedly connected with the valve seat; a left inlet connecting pipe and a right inlet connecting pipe are respectively arranged on two sides of the valve seat, the left inlet connecting pipe and the right inlet connecting pipe are respectively communicated with two sides of the valve plate in the valve body, and the left inlet connecting pipe and the right inlet connecting pipe are respectively communicated with a left upper air inlet and a right upper air inlet; the valve body upper portion is provided with the control box, set up the cross-section in the control box and be sectorial cavity, set up the pressure boost board in the cavity, pressure boost board one end and valve rod fixed connection, the pressure boost chamber of one side and the pressure release chamber of opposite side are separated into with the cavity to the pressure boost board, the pressure boost chamber can be respectively with upper left air inlet and upper right air inlet intercommunication, pressure release chamber and exhaust hole intercommunication.
As a further scheme of the invention: the upper part of the control box is provided with a movable check flap which is positioned at the communication part of the pressurization cavity and the upper left air inlet and the upper right air inlet.
As a further scheme of the invention: the exhaust cavity is connected with the exhaust hole, a switching flap capable of moving left and right is arranged in the exhaust cavity, the left side and the right side of the exhaust cavity are respectively provided with a left lower air inlet hole and a right lower air inlet hole, the left lower air inlet hole and the right lower air inlet hole are respectively communicated with the left inlet connecting pipe and the right inlet connecting pipe, the top of the exhaust cavity is communicated with the left lower exhaust hole and the right lower exhaust hole, the left lower exhaust hole and the right lower exhaust hole are respectively communicated with the left inlet connecting pipe and the right inlet connecting pipe, and the switching flap is provided with two.
As a further scheme of the invention: the pressure increasing plate is provided with a through hole which can be communicated with the pressure increasing cavity and the pressure releasing cavity.
As a further scheme of the invention: a movable exhaust plate is arranged in the pressure increasing plate corresponding to the through hole, one end of the exhaust plate is connected with a pull rope, a pressure spring is arranged at the end face of the exhaust plate, and one end of the pull rope is led out to a wire storage box fixed outside the control box.
As a further scheme of the invention: an adjusting knob is arranged on the wire storage box and connected with one end of the pull rope.
As a further scheme of the invention: and a sealing ring is arranged on the end surface of the pressurizing plate, which is in contact with the cavity.
Compared with the prior art, the invention has the beneficial effects that: the invention utilizes the pressure of medium to generate acting force on the pressure increasing plate, and the pressure increasing plate generates torque on the valve rod, thereby applying additional acting force on the valve plate, increasing the sealing specific pressure between the sealing surface of the valve plate and the sealing surface of the valve seat, improving the sealing effect, having the same pressure increasing effect when reversely connected, realizing the effect of bidirectional strengthened sealing, and solving the problem that the existing triple eccentric butterfly valve only has good one-way sealing property.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic sectional view along direction E-E in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, in the embodiment of the invention, a bidirectional triple offset butterfly valve includes a valve body 1 and a valve seat 4, a valve plate 3 is arranged in the valve body 1, the valve plate 3 is fixed on a valve rod 2, and the valve body 1 is fixedly connected with the valve seat 4; a left inlet connecting pipe 5 and a right inlet connecting pipe 14 are respectively arranged on two sides of the valve seat 4, the left inlet connecting pipe 5 and the right inlet connecting pipe 14 are respectively communicated with two sides of the valve plate 3 in the valve body 1, and the left inlet connecting pipe 5 and the right inlet connecting pipe 14 are respectively communicated with a left upper air inlet 9 and a right upper air inlet 11; 1 upper portion of valve body is provided with control box 6, set up the cross-section in the control box 6 and be sectorial cavity, set up pressure boost plate 8 in the cavity, pressure boost plate 8 one end is connected with valve rod 2, sets up sealing washer 7 on another terminal surface, with the inner wall sealing connection of cavity, separates into the pressure boost chamber 18 of one side and the pressure release chamber 19 of opposite side with the cavity, pressure boost chamber 18 can communicate with upper left air inlet 9 and upper right air inlet 11 respectively, specifically does: a movable check flap 10 is arranged at the upper part of the control box 6, the check flap 10 is positioned at the communication part of the pressurization cavity 18 and the left upper air inlet 9 and the right upper air inlet 11, when the medium pressure in the left upper air inlet 9 is greater than the medium pressure in the right upper air inlet 11, the check flap 10 moves rightwards, the left upper air inlet 9 is communicated with the pressurization cavity 18, otherwise, when the medium pressure in the right upper air inlet 11 is greater than the medium pressure in the left upper air inlet 9, the check flap 10 moves leftwards, and the right upper air inlet 11 is communicated with the pressurization cavity 18; the pressure relief cavity 19 is communicated with an exhaust hole 20, the exhaust hole 20 is connected with an exhaust cavity, a switching flap 21 capable of moving left and right is arranged in the exhaust cavity, the left side and the right side of the exhaust cavity are provided with a left lower air inlet hole 22 and a right lower air inlet hole 25, the left lower air inlet hole 22 and the right lower air inlet hole 25 are respectively communicated with a left inlet connecting pipe 5 and a right inlet connecting pipe 14, the top of the exhaust cavity is communicated with a left lower air outlet hole 23 and a right lower air outlet hole 24, the left lower air outlet hole 23 and the right lower air outlet hole 24 are respectively communicated with the left inlet connecting pipe 5 and the right inlet connecting pipe 14, the switching flap 21 is provided with two through holes capable of being respectively communicated with the left lower air outlet hole 23 and the right lower air outlet hole 24 correspondingly, when the right inlet connecting pipe 14 is internally ventilated, air pressure is transmitted to the right side surface of the switching flap 21 through the right lower air inlet hole 25 to, the right lower vent hole 24 communicates with the vent hole 20.
The pressure increasing plate 8 is provided with a through hole which can be communicated with the pressure increasing cavity 18 and the pressure releasing cavity 19, a movable exhaust plate 15 is arranged in the pressure increasing plate 8 corresponding to the through hole, one end of the exhaust plate 15 is connected with a pull rope 12, a pressure spring 16 is arranged at the end face of the exhaust plate 15, one end of the pull rope 12 is led out of a wire storage box 17 fixed outside the control box 6, the pull rope 12 transversely penetrates through the valve rod 2, and when the valve rod 2 is rotated to be opened, the valve rod 2 drives the pull rope 12 to pull the exhaust plate 15 and enable the through hole to be opened. In addition, the wire storage box 17 is provided with an adjusting knob 13, one end of a pull rope 12 is wound on the adjusting knob 13, the exhaust plate 15 can be pulled to move by rotating the adjusting knob 13, so that the pressure increasing cavity 18 and the pressure releasing cavity 19 are communicated, and if the valve rod 2 fails to rotate, the advantage of manual release is achieved, so that partial leakage can be generated at the sealing surface of the valve clack under the condition that the valve cannot be opened, and the overpressure at the inlet side of the butterfly valve is prevented.
Assuming that a medium flows to the left side from the right side of the valve plate 3, after the valve plate 3 is closed, air pressure enters the pressurizing cavity 18 from the right inlet connecting pipe 14, the left inlet connecting pipe 5 is sealed by the check valve 10, pressure exists in the pressurizing cavity 18, acting force is generated on the pressurizing plate 8, and the pressurizing plate 8 generates torque on the valve rod 2, so that additional acting force is applied to the valve plate 3, the sealing specific pressure between the sealing surface of the valve plate 3 and the sealing surface of the valve seat is increased, and the sealing effect is improved; similarly, if the medium flows from the left side to the right side of the valve plate 3, the pressure increasing plate 8 can generate pressure, so that additional acting force is applied to the valve plate 3, and the effect of bidirectional reinforced sealing is realized. When the pressure is released, the exhaust plate 15 is opened to communicate the pressurizing cavity 18 and the pressure releasing cavity 19, so that the air pressure can be exhausted from the pressurizing cavity 18.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A bidirectional triple-eccentric butterfly valve comprises a valve body (1) and a valve seat (4), wherein a valve plate (3) is arranged in the valve body (1), the valve plate (3) is fixed on a valve rod (2), and the valve body (1) is fixedly connected with the valve seat (4); the method is characterized in that: a left inlet connecting pipe (5) and a right inlet connecting pipe (14) are respectively arranged on two sides of the valve seat (4), the left inlet connecting pipe (5) and the right inlet connecting pipe (14) are respectively communicated with two sides of the valve plate (3) in the valve body (1), and the left inlet connecting pipe (5) and the right inlet connecting pipe (14) are respectively communicated with the left upper air inlet (9) and the right upper air inlet (11); a control box (6) is arranged at the upper part of the valve body (1), a cavity with a fan-shaped section is arranged in the control box (6), a pressurizing plate (8) is arranged in the cavity, one end of the pressurizing plate (8) is fixedly connected with the valve rod (2), the cavity is divided into a pressurizing cavity (18) at one side and a pressure relief cavity (19) at the other side by the pressurizing plate (8), the pressurizing cavity (18) is communicated with the left upper air inlet (9) and the right upper air inlet (11), and the pressure relief cavity (19) is communicated with the exhaust hole (20); the pressurizing plate (8) is provided with a through hole for communicating the pressurizing cavity (18) and the pressure relief cavity (19); the novel booster plate is characterized in that a movable exhaust plate (15) is arranged in the booster plate (8) corresponding to the through hole, one end of the exhaust plate (15) is connected with a pull rope (12), a pressure spring (16) is arranged at the end face of the exhaust plate (15), and one end of the pull rope (12) is led out to a wire storage box (17) fixed outside the control box (6).
2. A bi-directional triple offset butterfly valve according to claim 1, wherein: the upper part of the control box (6) is provided with a movable check flap (10), and the check flap (10) is positioned at the communication position of the pressurization cavity (18) and the upper left air inlet (9) and the upper right air inlet (11).
3. A bi-directional triple offset butterfly valve according to claim 1, wherein: the exhaust cavity is connected with the exhaust hole (20), a switching flap (21) capable of moving left and right is arranged in the exhaust cavity, the left side and the right side of the exhaust cavity are provided with a left lower air inlet hole (22) and a right lower air inlet hole (25), the left lower air inlet hole (22) and the right lower air inlet hole (25) are respectively communicated with the left inlet connecting pipe (5) and the right inlet connecting pipe (14), the top of the exhaust cavity is communicated with a left lower exhaust hole (23) and a right lower exhaust hole (24), the left lower exhaust hole (23) and the right lower exhaust hole (24) are respectively communicated with the left inlet connecting pipe (5) and the right inlet connecting pipe (14), and the switching flap (21) is provided with two through holes.
4. A bi-directional triple offset butterfly valve according to claim 1, wherein: an adjusting knob (13) is arranged on the wire storage box (17), and the adjusting knob (13) is connected with one end of the pull rope (12).
5. A bi-directional triple offset butterfly valve according to claim 1, wherein: and a sealing ring (7) is arranged on the end surface of the pressurizing plate (8) contacting with the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910403890.3A CN110081189B (en) | 2019-05-15 | 2019-05-15 | Bidirectional three-eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910403890.3A CN110081189B (en) | 2019-05-15 | 2019-05-15 | Bidirectional three-eccentric butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110081189A CN110081189A (en) | 2019-08-02 |
| CN110081189B true CN110081189B (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910403890.3A Active CN110081189B (en) | 2019-05-15 | 2019-05-15 | Bidirectional three-eccentric butterfly valve |
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| CN (1) | CN110081189B (en) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1216726A (en) * | 1968-10-16 | 1970-12-23 | Whessoe Ltd | Improvements in and relating to means for controlling flow of liquid through a drop pipe into a vessel |
| SU1712718A1 (en) * | 1989-10-31 | 1992-02-15 | Черноморский филиал Центрального научно-исследовательского института технологии судостроения | Device for pipeline shutting off |
| CN2348192Y (en) * | 1998-10-18 | 1999-11-10 | 张重辉 | Charge and discharge valve |
| CN202302000U (en) * | 2011-11-02 | 2012-07-04 | 湖北三通石油机械有限公司 | Sector cylinder pneumatic butterfly valve |
| CN203146981U (en) * | 2013-04-01 | 2013-08-21 | 上海华尔德电站阀门有限公司 | Valve pneumatic device with pressurization function |
| WO2015017849A2 (en) * | 2013-08-02 | 2015-02-05 | Daniel Measurement And Control, Inc. | A flow control system and control valve having closure assistance |
| CN104482243B (en) * | 2014-12-21 | 2016-08-17 | 郑子叶 | Without friction sealed ball valve |
| CN204692595U (en) * | 2015-05-28 | 2015-10-07 | 常州埃姆基冷冻设备有限公司 | Industrial refrigeration right-angle type screw down nonreturn valve |
| CN205715701U (en) * | 2016-04-20 | 2016-11-23 | 邵建农 | Involute butterfly control valve for water pump |
| CN107355547A (en) * | 2017-08-08 | 2017-11-17 | 英诺威阀业有限公司 | It is a kind of from pressurising bidirectional sealed butterfly valve |
| CN207246443U (en) * | 2017-09-19 | 2018-04-17 | 荆门炼化机械有限公司 | A kind of bidirectional sealed butterfly valve |
| CN109458461B (en) * | 2018-12-25 | 2023-09-19 | 博雷（中国）控制系统有限公司 | Three eccentric butterfly valve and pressure self-adaptive valve control system |
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2019
- 2019-05-15 CN CN201910403890.3A patent/CN110081189B/en active Active
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| CN110081189A (en) | 2019-08-02 |
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Effective date of registration: 20201218 Address after: 1-2 / F, workshop 3, 1869 Binhai 1st Road, Wenzhou Economic and Technological Development Zone, 325000, Zhejiang Province Applicant after: Minggong Valve Co.,Ltd. Address before: 325115 Lixi Village, Yantou Town, Yongjia County, Wenzhou City, Zhejiang Province Applicant before: Li Qiong |
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