CN104806771A - Pneumatic expansion butterfly valve - Google Patents
Pneumatic expansion butterfly valve Download PDFInfo
- Publication number
- CN104806771A CN104806771A CN201510190695.9A CN201510190695A CN104806771A CN 104806771 A CN104806771 A CN 104806771A CN 201510190695 A CN201510190695 A CN 201510190695A CN 104806771 A CN104806771 A CN 104806771A
- Authority
- CN
- China
- Prior art keywords
- valve
- control valve
- fluid passage
- butterfly
- pneumatic expansion
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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
- F16K1/42—Valve seats
-
- 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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
-
- 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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1225—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston with a plurality of pistons
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
-
- 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
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention provides a pneumatic expansion butterfly valve, which comprises a valve body, a valve plate, a valve rod and an executer, wherein the executer is arranged above a butterfly body, the valve plate for blocking a fluid passage is arranged in the fluid passage of the valve body, the valve plate is in transmission connection with the executer through the valve rod, an elastic valve seat which is in tight contact with or separated from the valve plate when the valve plate blocks the fluid passage is also arranged in the fluid passage, a cavity is formed between the elastic valve seat and the valve body, the cavity is connected with the connecting-out end of a modular process control valve arranged outside the valve body through a pipeline, the connecting-in end of the modular process control valve is then connected with the control valve through a pipeline, the executer is also connected with the control valve through a pipeline, and the control valve is then connected with an external pressure air source. The pneumatic expansion butterfly valve has the advantages that the design is novel, the structure is unique, the butterfly valve starting torque is very small, the action is very sensitive, the starting and closing contact abrasion of the valve seat and the valve plate is reduced, the defects of the traditional butterfly valve are avoided, the executer with the smaller torque can be selected, the service life of the butterfly valve is greatly prolonged, and the economy of the butterfly valve is greatly improved.
Description
Technical field
A kind of pipeline flow control gear in pipe laying field involved in the present invention, particularly
a kind of pneumatic expansion formula butterfly valve.
Background technique
Butterfly valve is in columniform valve body fluid passage, is equipped with a discoid butterfly valve plate, and it does 0 ~ 90 ° of rotation around valve rod axis, and when butterfly plate is in 0 °, valve is closed completely; When rotating to 90 degree, then valve is opened completely; Because butterfly valve structure is simple, volume is little, lightweight, flexible operation, the advantage such as easy for installation, negotiability is large, be more and more used in Pipe installing.But the strong friction torsion of traditional butterfly valve valve plate and valve seat when opening and closing is excessive, reduces the working life of valve, and traditional butterfly valve moment of torsion when starting closedown is comparatively large, needs the power that final controlling element provides larger.
Summary of the invention
For the defect that traditional butterfly valve working life is low, moment of torsion is large, the invention provides
a kind of pneumatic expansion formula butterfly valve.
To achieve these goals, the technical solution used in the present invention is:
a kind of pneumatic expansion formula butterfly valve, comprise valve body, valve plate, valve rod and the final controlling element be arranged on above butterfly body, the valve plate of barrier fluid passage is provided with in the fluid passage of valve body, valve plate is in transmission connection by valve rod and final controlling element, also be provided with in fluid passage when valve plate intercepts disconnected fluid passage with valve plate close contact or the elastic seat that is separated, cavity is provided with between described elastic seat and valve body, what described cavity was connected to by pipeline the modular type control valve that valve body arranges outward picks out end, the incoming end of modular type control valve is connected with control valve by pipeline again, described final controlling element is also connected with control valve by pipeline, control valve is connected with external pressure source of the gas again.
This practicability provides further
a kind of pneumatic expansion formula butterfly valve, its elastic seat is fastenedly connected on the valve seat fixed pedestal that arranges in fluid passage, is formed with airtight cavity, is positioned at valve body and is provided with the attachment hole be communicated with described airtight cavity between valve seat fixed pedestal and elastic seat.
This practicability provides further
a kind of pneumatic expansion formula butterfly valve, its final controlling element is pneumatic actuator, and it comprises cylinder, two driven plunger are provided with in cylinder, two driven plunger are provided with driving tooth bar, the described valve rod upper end be in transmission connection with final controlling element is provided with the gear driving tooth bar engagement driving with two, and cylinder is separated into three by two driven plunger
independentairtight chamber, the airtight chamber wherein formed between two driven plunger communicates with outside by arranging first interface on cylinder wall, and all the other two cavitys all communicate with outside with the second interface be arranged on cylinder wall.
This practicability provides further
a kind of pneumatic expansion formula butterfly valveits modular type control valve comprises by flow control valve, pressure regulator valve, pressure gauge, and unidirectional rapid escape valve, the entrance of flow control valve is the incoming end of modular type control valve, flow control valve, pressure regulator valve, unidirectional rapid escape valve are connected in series successively, unidirectional rapid escape valve comprises access port, exit, Quick air-discharge mouth, wherein exit be modular type control valve pick out end, Quick air-discharge mouth is communicated with air.
This practicability provides further
a kind of pneumatic expansion formula butterfly valve, its control valve is two-position-five-way solenoid valve.
This practicability provides further
a kind of pneumatic expansion formula butterfly valve, the material of its elastic seat is nitrile rubber or polyurethane or fluorine rubber.
Beneficial effect of the present invention: this
inventionthe advantage of expansion valve seat and valve plate is obtained fully play, novel in design, structure is unique, butterfly valve starting torque is extra small, action is very sensitive, and reduction valve seat and valve plate open and close contact wear, avoid the inferior position of traditional butterfly valve, can match the final controlling element that moment of torsion is less, working life and the Economy of butterfly valve are greatly improved.
Accompanying drawing explanation
fig. 1, overall structure of the present invention signal
figure;
fig. 2, linkage structure exploded pictorial of the present invention
figure;
fig. 3, the structural representation of modular type control valve in the present invention
figure;
fig. 4, the structural representation of two-position-five-way solenoid valve in the present invention
figure;
fig. 5, the valve mechanism signal of the present invention when closing
figure;
fig. 6, the valve mechanism signal of the present invention when opening
figure.
Embodiment
For improving the defect that traditional butterfly valve working life is low, moment of torsion is large, design
a kind of pneumatic expansion formula butterfly valve(
as Fig. 1~
fig. 6),
a kind of pneumatic expansion formula butterfly valve, comprise valve body 1, valve plate 2, valve rod 3 and the final controlling element 4 be arranged on above butterfly body 1, the valve plate 2 of barrier fluid passage is provided with in the fluid passage of valve body 1, valve plate 2 is in transmission connection by valve rod 3 and final controlling element 4, also be provided with in fluid passage when valve plate 2 intercepts disconnected fluid passage with valve plate 2 close contact or the elastic seat 5 that is separated, cavity is provided with between described elastic seat 5 and valve body 1, what described cavity was connected to the outer modular type control valve 6 arranged of valve body 1 by pipeline picks out end, the incoming end of modular type control valve 6 is connected with control valve 7 by pipeline again, described final controlling element 4 is also connected with control valve 7 by pipeline, control valve 7 is connected with external pressure source of the gas again.
Described elastic seat 5 is fastenedly connected on the valve seat fixed pedestal 8 that arranges in fluid passage, is formed with airtight cavity, is positioned at valve body 1 and is provided with the attachment hole 9 be communicated with described airtight cavity between valve seat fixed pedestal 8 and elastic seat 5.
Described final controlling element 4 is pneumatic actuator, it comprises cylinder 10, two driven plunger 11 are provided with in cylinder 10, two driven plunger 11 are provided with and drive tooth bar 12, described valve rod 3 upper end be in transmission connection with final controlling element 4 is provided with and drives with two gear 13, two driven plunger 11 of tooth bar 12 engagement driving that cylinder 10 is separated into three
independentairtight chamber, the airtight chamber wherein formed between two driven plunger communicates with outside by arranging first interface 14 on cylinder wall, and all the other two cavitys all communicate with outside with the second interface 15 be arranged on cylinder wall.
Described modular type control valve 6 comprises by flow control valve 16, pressure regulator valve 17, pressure
table 18, and unidirectional rapid escape valve 19, the entrance of flow control valve 16 is the incoming end of modular type control valve 6, flow control valve 16, pressure regulator valve 17, unidirectional rapid escape valve 19 are connected in series successively, unidirectional rapid escape valve 19 comprises access port, exit, Quick air-discharge mouth, wherein exit be modular type control valve pick out end, Quick air-discharge mouth is communicated with air.
Described control valve 7 is two-position-five-way solenoid valve, uses the two electric control solenoid valve of two-position five-way plain edition NAMUR in concrete enforcement.The material of described elastic seat 5 is nitrile rubber or polyurethane or fluorine rubber.
Described external pressure source of the gas is generally air compressor or compression gas accumulator.
Working principle of the present invention: under the control of two-position-five-way solenoid valve, the rotation of pneumatic actuator promotion valve plate 2 realizes the open and close of valve.When valve plate 2 moves to the position making valve closing, valve plate 2 is instantaneous touch elastic seat 5, thus can reduce friction, reduces the moment of torsion of wearing and tearing and valve rod driving; After valve closing, under the control of modular type control valve 6, elastic seat 5 expands towards valve plate 2, thus provides larger sealing surface, and provides uniform pressure to valve plate 2; Before opening valve, under the control of modular type control valve 6 and the effect of pneumatic actuator, first elastic seat tightens, and then valve plate 2 freely turns to enable possition.
Beneficial effect of the present invention: adopt modular type combination brake switch and proporting, the advantage of expansion valve seat and valve plate is obtained fully play, novel in design, structure is unique, and butterfly valve starting torque is extra small, and action is very sensitive, and low wearing and tearing, avoid the inferior position of traditional butterfly valve, can match the final controlling element that moment of torsion is less, working life and the Economy of butterfly valve are greatly improved.
Those ordinary skill in the art simply replace and change is all within this patent protection domain.
Claims (6)
1. a pneumatic expansion formula butterfly valve, comprise valve body, valve plate, valve rod and the final controlling element be arranged on above butterfly body, the valve plate of barrier fluid passage is provided with in the fluid passage of valve body, valve plate is in transmission connection by valve rod and final controlling element, it is characterized in that, also be provided with in fluid passage when valve plate intercepts disconnected fluid passage with valve plate close contact or the elastic seat that is separated, cavity is provided with between described elastic seat and valve body, what described cavity was connected to by pipeline the modular type control valve that valve body arranges outward picks out end, the incoming end of modular type control valve is connected with control valve by pipeline again, described final controlling element is also connected with control valve by pipeline, control valve is connected with external pressure source of the gas again.
2. a kind of pneumatic expansion formula butterfly valve according to claim 1, it is characterized in that, elastic seat is fastenedly connected on the valve seat fixed pedestal that arranges in fluid passage, be formed with airtight cavity between valve seat fixed pedestal and elastic seat, be positioned at valve body and be provided with the attachment hole be communicated with described airtight cavity.
3. a kind of pneumatic expansion formula butterfly valve according to claim 1, it is characterized in that, final controlling element is pneumatic actuator, it comprises cylinder, two driven plunger are provided with in cylinder, two driven plunger are provided with driving tooth bar, the described valve rod upper end be in transmission connection with final controlling element is provided with the gear driving tooth bar engagement driving with two, cylinder is separated into three independently airtight chamber by two driven plunger, the airtight chamber wherein formed between two driven plunger communicates with outside by arranging first interface on cylinder wall, all the other two cavitys all communicate with outside with the second interface be arranged on cylinder wall.
4. a kind of pneumatic expansion formula butterfly valve according to claim 1 or 2 or 3, it is characterized in that, modular type control valve comprises by flow control valve, pressure regulator valve, pressure gauge, and unidirectional rapid escape valve, the entrance of flow control valve is the incoming end of modular type control valve, flow control valve, pressure regulator valve, unidirectional rapid escape valve are connected in series successively, unidirectional rapid escape valve comprises access port, exit, Quick air-discharge mouth, wherein exit be modular type control valve pick out end, Quick air-discharge mouth is communicated with air.
5. a kind of pneumatic expansion formula butterfly valve according to claim 4, it is characterized in that, control valve is two-position-five-way solenoid valve.
6. a kind of pneumatic expansion formula butterfly valve according to claim 1, is characterized in that, the material of described elastic seat is nitrile rubber or polyurethane or fluorine rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190695.9A CN104806771B (en) | 2015-04-18 | 2015-04-18 | A kind of pneumatic expansion formula butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190695.9A CN104806771B (en) | 2015-04-18 | 2015-04-18 | A kind of pneumatic expansion formula butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104806771A true CN104806771A (en) | 2015-07-29 |
| CN104806771B CN104806771B (en) | 2017-10-24 |
Family
ID=53691859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510190695.9A Active CN104806771B (en) | 2015-04-18 | 2015-04-18 | A kind of pneumatic expansion formula butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806771B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350833A (en) * | 2020-03-26 | 2020-06-30 | 陈少同 | Butterfly valve |
| CN111350830A (en) * | 2020-03-26 | 2020-06-30 | 陈少同 | Butterfly valve |
| CN114941720A (en) * | 2022-06-07 | 2022-08-26 | 宝武清洁能源鄂州有限公司 | Pneumatic valve device for vacuum pumping system and using method thereof |
| CN115962290A (en) * | 2022-12-11 | 2023-04-14 | 江苏明江阀业有限公司 | Pneumatic full-lining butterfly valve with high safety and use method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201310634Y (en) * | 2008-09-10 | 2009-09-16 | 江苏神通阀门股份有限公司 | Gas-charging butterfly valve |
| CN101858458A (en) * | 2010-06-08 | 2010-10-13 | 清华大学 | Pneumatic executor for driving valve |
| CN202660035U (en) * | 2012-06-25 | 2013-01-09 | 中国舰船研究设计中心 | Pneumatic control device for pipeline butterfly valve |
| CN102900852A (en) * | 2011-07-25 | 2013-01-30 | 孙杰 | Valve seat component and butterfly valve |
| US20150028242A1 (en) * | 2013-07-29 | 2015-01-29 | Fisher Controls International Llc | Fluid valve apparatus having enclosed seals |
| CN204175987U (en) * | 2014-09-03 | 2015-02-25 | 浙江威腾阀门有限公司 | Sealed type dish valve |
| CN204573137U (en) * | 2015-04-18 | 2015-08-19 | 温州巴尔阀门有限公司 | A kind of pneumatic expansion formula butterfly valve |
-
2015
- 2015-04-18 CN CN201510190695.9A patent/CN104806771B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201310634Y (en) * | 2008-09-10 | 2009-09-16 | 江苏神通阀门股份有限公司 | Gas-charging butterfly valve |
| CN101858458A (en) * | 2010-06-08 | 2010-10-13 | 清华大学 | Pneumatic executor for driving valve |
| CN102900852A (en) * | 2011-07-25 | 2013-01-30 | 孙杰 | Valve seat component and butterfly valve |
| CN202660035U (en) * | 2012-06-25 | 2013-01-09 | 中国舰船研究设计中心 | Pneumatic control device for pipeline butterfly valve |
| US20150028242A1 (en) * | 2013-07-29 | 2015-01-29 | Fisher Controls International Llc | Fluid valve apparatus having enclosed seals |
| CN204175987U (en) * | 2014-09-03 | 2015-02-25 | 浙江威腾阀门有限公司 | Sealed type dish valve |
| CN204573137U (en) * | 2015-04-18 | 2015-08-19 | 温州巴尔阀门有限公司 | A kind of pneumatic expansion formula butterfly valve |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350833A (en) * | 2020-03-26 | 2020-06-30 | 陈少同 | Butterfly valve |
| CN111350830A (en) * | 2020-03-26 | 2020-06-30 | 陈少同 | Butterfly valve |
| CN114941720A (en) * | 2022-06-07 | 2022-08-26 | 宝武清洁能源鄂州有限公司 | Pneumatic valve device for vacuum pumping system and using method thereof |
| CN114941720B (en) * | 2022-06-07 | 2024-10-15 | 宝武清洁能源鄂州有限公司 | Pneumatic valve device for vacuumizing system and application method of pneumatic valve device |
| CN115962290A (en) * | 2022-12-11 | 2023-04-14 | 江苏明江阀业有限公司 | Pneumatic full-lining butterfly valve with high safety and use method thereof |
| CN115962290B (en) * | 2022-12-11 | 2023-11-14 | 江苏明江阀业有限公司 | Pneumatic full-lining butterfly valve with high safety and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104806771B (en) | 2017-10-24 |
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| EXSB | Decision made by sipo to initiate substantive examination | ||
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| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 325000 36 Chahua Road, Wenzhou Economic and Technological Development Zone, Zhejiang Province Patentee after: Zhejiang BAL Valve Co., Ltd Address before: 325000 Zhejiang city of Wenzhou province city economic and Technological Development Zone No. 7 Lane Street Yongqiang Avenue 2273 Patentee before: Wenzhou Ba Er valve Co., Ltd |
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| CP03 | Change of name, title or address |