CN108561567B - Spherical butterfly valve - Google Patents
Spherical butterfly valve Download PDFInfo
- Publication number
- CN108561567B CN108561567B CN201810636357.7A CN201810636357A CN108561567B CN 108561567 B CN108561567 B CN 108561567B CN 201810636357 A CN201810636357 A CN 201810636357A CN 108561567 B CN108561567 B CN 108561567B
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- CN
- China
- Prior art keywords
- valve
- valve seat
- pressing ring
- cavity
- shaft
- 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.)
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- 238000003825 pressing Methods 0.000 claims abstract description 52
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 230000009471 action Effects 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
- F16K1/2266—Shaping or arrangements of the sealing the sealing being arranged on the valve seat and being forced into sealing contact with the valve member by a spring or a spring-like 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
- F16K1/16—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
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
-
- 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
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
Abstract
The invention provides a spherical butterfly valve, which comprises a driving device, a valve body, a valve shaft, a valve seat and a valve plate, wherein the valve body is provided with a cavity for accommodating the valve plate, the valve plate is movably arranged in the cavity, the valve plate is eccentrically connected with the valve shaft, the inner wall of the cavity is provided with a step for installing the valve seat, the valve seat is arranged on the step in a sealing way, the valve plate and the valve seat form a dynamic sealing pair, and the inner wall of the cavity is provided with a valve seat pressing ring and a valve seat pressing ring blocking ring; a compensation gap is reserved between the valve seat and the valve seat pressing ring; the valve seat pressing ring is provided with a pre-tightening screw used for propping against the valve seat, and the bottom end of the pre-tightening screw is propped against the valve seat. The spherical butterfly valve is compact in structure and easy to process; meanwhile, the device has the advantages of convenient installation and maintenance, good sealing performance, high reliability, on-line maintenance and convenience for above-ground operation.
Description
Technical Field
The invention relates to a valve, in particular to a spherical butterfly valve.
Background
The spherical butterfly valve is a valve with a butterfly valve structure and a spherical sealing pair, namely a valve plate sealing surface is a spherical surface, and a valve seat sealing surface is a conical surface. The spherical butterfly valve is of a double-eccentric structure, and dirt or dirt deposited on the sealing surface of the valve plate can be hung and cut off by utilizing the sealing pair wedging principle when the valve is closed, so that the cleaning of the sealing surface is ensured. The spherical butterfly valve used in the market at present mainly comprises main parts such as a valve body, a valve seat pressing ring, a valve seat, a valve plate, a valve seat sealing ring, an upper valve shaft, a lower valve shaft and the like. The seal between the valve seat and the valve body mainly has two forms of end face seal and radial seal, the radial seal can realize larger acting force of a medium, and the valve can conveniently realize self sealing of the valve by means of the acting force of the medium, so that the opening and closing torque of the valve is reduced.
At present, butterfly ball valves are widely applied to sewage treatment, municipal administration, power generation and chemical pipe network systems, wherein valve clacks are installed from an outlet, and valve seats and valve seat pressing rings are installed from an inlet. The valve seat pressing ring is of a flange type structure, in order to ensure that the structural size of the valve body is reasonable in design, the valve seat pressing ring is required to be of a reduced diameter design, otherwise, the wall thickness of the valve body is uneven in local thickness, casting defects in design are brought, meanwhile, the circulation capacity of the valve is reduced due to the reduced diameter design, and for a water system, the structure can influence medium parameters of a downstream process system on site.
Disclosure of Invention
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the spherical butterfly valve comprises a driving device, a valve body, a valve shaft, a valve seat and a valve plate, wherein a cavity for accommodating the valve plate is formed in the valve body, the valve plate is movably arranged in the cavity, the valve plate is eccentrically connected with the valve shaft, and the driving device drives the valve plate to rotate through the valve shaft; the valve seat is arranged on the inner wall of the cavity in a sealing way, the valve plate and the valve seat form a dynamic sealing pair,
the inner wall of the cavity is also provided with a valve seat pressing ring used for pressing the valve seat and a valve seat pressing ring baffle ring used for limiting the valve seat pressing ring; the outer edge of the valve seat pressing ring baffle ring is embedded into the inner wall of the cavity, and one side of the valve seat pressing ring baffle ring is attached to the valve seat pressing ring;
a pre-tightening spring is further arranged between the valve seat and the valve seat pressing ring, and a compensation gap is reserved between the valve seat and the valve seat pressing ring;
the valve seat pressing ring is provided with a pre-tightening screw used for propping against the valve seat, the bottom end of the pre-tightening screw is propped against one side surface of the valve seat, the inner wall of the cavity is provided with a step, and the other side surface of the valve seat can be attached to the step under the action of the pre-tightening screw.
Based on the above, a compression spring is also sleeved between the pre-tightening screw and the valve seat pressing ring.
Based on the above, the valve shaft includes an upper valve shaft and a lower valve shaft, the upper valve shaft is eccentrically mounted on the upper portion of the valve plate, the lower valve shaft is eccentrically mounted on the lower portion of the valve plate, and the top end of the upper valve shaft is connected with the driving device.
Based on the above, the upper valve shaft and the lower valve shaft are both in contact with the valve body through slide bearings.
Based on the above, the driving device is an electric actuator, a pneumatic actuator, a hydraulic actuator or a manual actuator.
Based on the above, the valve seat is provided with a sealing ring, and the valve seat is arranged on the inner wall of the cavity in a sealing way through the sealing ring.
Compared with the prior art, the spherical butterfly valve has outstanding substantive characteristics and remarkable progress, and particularly, the spherical butterfly valve provided by the invention has the advantages that the pre-tightening spring is arranged between the valve seat and the valve seat pressing ring, the pre-tightening screw is arranged on the valve seat pressing ring, the valve seat pressing ring baffle ring is arranged on the valve seat pressing ring, a certain clearance allowance is arranged at the end surfaces of the valve seat and the valve body, the clearance allowance is used as a displacement space for floating movement of the valve seat, a certain space is arranged between the valve seat and the valve seat pressing ring, the clearance is used as a compression and expansion space of the pre-tightening spring, and the clearance is also used as a floating space of the valve seat, so that the spherical butterfly valve realizes self-locking positioning by utilizing an eccentric wedging principle and a self-sealing structure of medium acting force, and is reliable in reverse sealing.
Specifically, the rotation center of the valve body and the valve plate of the spherical butterfly valve is offset by a radial dimension from the geometric center of the sealing sphere of the valve plate, and also has an offset dimension on the axis of a valve body channel with the sealing surface of the valve seat, so that the spherical butterfly valve realizes self-locking closing by means of two eccentrics. When the medium is pressed from the valve seat direction, namely the sealing direction is unfavorable, as the valve seat and the valve body are radially sealed, a certain space exists between the valve seat and the valve seat pressing ring, the medium fills the area, the valve seat is closed towards the valve plate under the action of the medium, and meanwhile, when the spherical butterfly valve is installed, a certain pretightening force is arranged on the valve seat in a sealing way through the pretightening screw, so that reliable sealing is realized under the action of the pretightening force at the initial stage and the medium force.
When the medium is pressed from the back of the valve plate, the valve plate is closed to the valve seat under the action of the medium, and the back of the valve seat is supported by the pre-tightening screw, so that the valve plate and the valve seat can realize good sealing effect under the action of the medium. More importantly, the valve seat pressing ring adopts a uniform inner diameter design, avoids a diameter reduction structure, improves the flow capacity of the valve, can replace the application of the existing spherical butterfly valve or butterfly valve in sewage treatment and municipal pipe network, and is used as a device for reliably controlling fluid cutting and flow regulation in a pipe network system.
The spherical butterfly valve is compact in structure and easy to process; meanwhile, the device has the advantages of convenient installation and maintenance, good sealing performance, high reliability, on-line maintenance and convenience for above-ground operation.
Drawings
FIG. 1 is a schematic diagram of the overall internal structure of a spherical butterfly valve provided by the invention.
FIG. 2 is an enlarged schematic view of a portion of a ball butterfly valve according to the present invention.
FIG. 3 is a schematic diagram of the overall structure of the outer part of the spherical butterfly valve provided by the invention.
In the figure: 1. a valve body; 2. a valve seat pressing ring baffle ring; 3. pre-tightening a screw; 4. a valve seat pressing ring; 5. a valve plate; 6. an upper valve shaft; 7. a valve seat; 8. a pre-tightening spring; 9. a seal ring; 10. a lower valve shaft; 11. compensating for the gap.
Detailed Description
The technical scheme of the invention is further described in detail through the following specific embodiments.
Example 1
The embodiment provides a spherical butterfly valve, as shown in fig. 1, 2 and 3, comprising a driving device, a valve body 1, a valve shaft, a valve seat 7 and a valve plate 5, wherein the valve body 1 is provided with a cavity for accommodating the valve plate 5, the valve plate 5 is movably arranged in the cavity, the valve shaft is eccentrically connected to the valve plate 5, and the driving device drives the valve plate 5 to rotate through the valve shaft.
Specifically, a sealing ring 9 is arranged on the valve seat 7, the valve seat 7 is arranged on the inner wall of the cavity in a sealing way through the sealing ring 9, and the valve plate 5 and the valve seat 7 form a dynamic sealing pair.
The inner wall of the cavity is also provided with a valve seat pressing ring 4 for pressing the valve seat 7 and a valve seat pressing ring baffle ring 2 for limiting the valve seat pressing ring 4. The outer edge of the valve seat pressing ring baffle ring 2 is embedded into the inner wall of the cavity, and one side of the valve seat pressing ring baffle ring 2 is attached to the valve seat pressing ring 4.
A pre-tightening spring 8 is further arranged between the valve seat 7 and the valve seat pressing ring 4, and a compensation gap 11 is reserved between the valve seat 7 and the valve seat pressing ring 4.
The valve seat pressing ring 4 is provided with a pre-tightening screw 3 for pressing the valve seat 7, and the bottom end of the pre-tightening screw 3 is pressed on one side surface of the valve seat 7. A step is arranged on the inner wall of the cavity, and the other side surface of the valve seat 7 can be attached to the step under the action of the pre-tightening screw 3; a compression spring is sleeved between the pre-tightening screw 3 and the valve seat pressing ring 4.
In this embodiment, the valve shaft includes an upper valve shaft 6 and a lower valve shaft 10, the upper valve shaft 6 is eccentrically mounted on the upper portion of the valve plate 5, the lower valve shaft 10 is eccentrically mounted on the lower portion of the valve plate 5, and the top end of the upper valve shaft 6 is connected with the driving device. The upper valve shaft 6 and the lower valve shaft 10 are both in contact with the valve body through sliding bearings. The driving device is a manual actuating mechanism. The valve seat 7 is provided with a sealing ring 9 in a sealing way, and the valve seat 7 is arranged on the inner wall of the cavity in a sealing way through the sealing ring 9.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (3)
1. The spherical butterfly valve comprises a driving device, a valve body, a valve shaft, a valve seat and a valve plate, wherein a cavity for accommodating the valve plate is formed in the valve body, the valve plate is movably arranged in the cavity, the valve plate is eccentrically connected with the valve shaft, and the driving device drives the valve plate to rotate through the valve shaft; the valve seat is arranged on the inner wall of the cavity in a sealing way, and the valve plate and the valve seat form a dynamic sealing pair, and the dynamic sealing pair is characterized in that:
the inner wall of the cavity is also provided with a valve seat pressing ring used for pressing the valve seat and a valve seat pressing ring baffle ring used for limiting the valve seat pressing ring; the outer edge of the valve seat pressing ring baffle ring is embedded into the inner wall of the cavity, and one side of the valve seat pressing ring baffle ring is attached to the valve seat pressing ring;
a pre-tightening spring is further arranged between the valve seat and the valve seat pressing ring, and a compensation gap is reserved between the valve seat and the valve seat pressing ring;
the valve seat pressing ring is provided with a pre-tightening screw used for pressing the valve seat, the bottom end of the pre-tightening screw is propped against one side face of the valve seat, a step is arranged on the inner wall of the cavity, the other side face of the valve seat can be attached to the step under the action of the pre-tightening screw, a pressure spring is further sleeved between the pre-tightening screw and the valve seat pressing ring, the valve seat is provided with a sealing ring, and the valve seat is arranged on the inner wall of the cavity in a sealing mode through the sealing ring.
2. The ball butterfly valve of claim 1, wherein: the valve shaft comprises an upper valve shaft and a lower valve shaft, the upper valve shaft is eccentrically arranged on the upper portion of the valve plate, the lower valve shaft is eccentrically arranged on the lower portion of the valve plate, and the top end of the upper valve shaft is connected with the driving device.
3. The ball butterfly valve of claim 2, wherein: the upper valve shaft and the lower valve shaft are both in contact with the valve body through sliding bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810636357.7A CN108561567B (en) | 2018-06-20 | 2018-06-20 | Spherical butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810636357.7A CN108561567B (en) | 2018-06-20 | 2018-06-20 | Spherical butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108561567A CN108561567A (en) | 2018-09-21 |
| CN108561567B true CN108561567B (en) | 2024-03-22 |
Family
ID=63554239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810636357.7A Active CN108561567B (en) | 2018-06-20 | 2018-06-20 | Spherical butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108561567B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115388184B (en) * | 2022-10-28 | 2023-01-24 | 自贡新比隆阀门有限公司 | High-performance double-plate ball valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100599410B1 (en) * | 2006-05-17 | 2006-07-10 | 한국키스톤발부(주) | Pressurized metal seated butterfly valve |
| JP2012127400A (en) * | 2010-12-14 | 2012-07-05 | Sasakura Engineering Co Ltd | Triple eccentric butterfly valve |
| CN202531865U (en) * | 2012-04-21 | 2012-11-14 | 浙江欧尼特阀门有限公司 | Triple eccentric two-way hard seal butterfly valve |
| CN103603994A (en) * | 2013-11-29 | 2014-02-26 | 天津祥嘉流体控制系统有限公司 | Double-eccentric ultralow temperature butterfly valve |
| CN205918914U (en) * | 2016-03-02 | 2017-02-01 | 沈阳科派卡装备有限公司 | Double eccentric butterfly valve |
| CN207178716U (en) * | 2017-09-20 | 2018-04-03 | 浙江北泽阀门科技有限公司 | A kind of three eccentric two-way hard seal butterfly valve |
| CN208431389U (en) * | 2018-06-20 | 2019-01-25 | 郑州铝都阀门有限公司 | Ball type butlerfly valve |
-
2018
- 2018-06-20 CN CN201810636357.7A patent/CN108561567B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100599410B1 (en) * | 2006-05-17 | 2006-07-10 | 한국키스톤발부(주) | Pressurized metal seated butterfly valve |
| JP2012127400A (en) * | 2010-12-14 | 2012-07-05 | Sasakura Engineering Co Ltd | Triple eccentric butterfly valve |
| CN202531865U (en) * | 2012-04-21 | 2012-11-14 | 浙江欧尼特阀门有限公司 | Triple eccentric two-way hard seal butterfly valve |
| CN103603994A (en) * | 2013-11-29 | 2014-02-26 | 天津祥嘉流体控制系统有限公司 | Double-eccentric ultralow temperature butterfly valve |
| CN205918914U (en) * | 2016-03-02 | 2017-02-01 | 沈阳科派卡装备有限公司 | Double eccentric butterfly valve |
| CN207178716U (en) * | 2017-09-20 | 2018-04-03 | 浙江北泽阀门科技有限公司 | A kind of three eccentric two-way hard seal butterfly valve |
| CN208431389U (en) * | 2018-06-20 | 2019-01-25 | 郑州铝都阀门有限公司 | Ball type butlerfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108561567A (en) | 2018-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Haijun Inventor after: Wang Shuai Inventor after: Zhang Jialun Inventor before: Wang Shuai Inventor before: Zhang Jialun |
|
| CB03 | Change of inventor or designer information | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |