CN103672066B - Cut-off valve - Google Patents
Cut-off valve Download PDFInfo
- Publication number
- CN103672066B CN103672066B CN201310651918.8A CN201310651918A CN103672066B CN 103672066 B CN103672066 B CN 103672066B CN 201310651918 A CN201310651918 A CN 201310651918A CN 103672066 B CN103672066 B CN 103672066B
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- Prior art keywords
- valve
- diaphragm support
- cavity
- support parts
- cut
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
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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
- F16K31/12—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
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
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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
- F16K31/12—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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a kind of cut-off valve.Be characterized in: comprise base (1), this base (1) is provided with commutation chamber (2), piston cavity (3) and pressure regulating cavity (4) from the bottom to top successively, wherein in commutation chamber (2), have import and outlet, in this commutation chamber (2), be provided with valve hole part (5), the lower end of this valve hole part (5) is connected with base (1) by Returnning spring (6) and its upper end is connected with the gas control piston (8) be arranged in piston cavity (3) internal air pressure chamber (7); Wherein in pressure regulating cavity (4), diaphragm support parts (9) are installed, in the middle of these diaphragm support parts (9), are provided with exhaust port (18).The invention provides a kind of Novel stop valve, it adopts leading type working principle, can detect bleed pressure and realize auto reversive 2/2-way cut-off valve.
Description
Technical field
The present invention relates to a kind of Novel stop valve.
Background technique
Traditional control program is as follows: when needing detected pressures in Pneumatic control circuit and realizing adopting " Pneumatic pressure switch " and " two logical cut-off valves " combination to realize when gas circuit is cut off.As shown in Figure 1, traditional approach is sketched with the control case of the pneumatic control valve in Row control industry.Reduction valve is input to positioning work piece after being reduced pressure by source of the gas, and positioning work piece carries out regulating type control according to the 4-20mA current signal of input to pneumatic actuator; When the bleed pressure of reduction valve is lower than air failure setting value, the position before control system requires pneumatic actuator to remain on air failure.Pneumatic pressure switch is for detecting the delivery pressure of reduction valve, and when the air failure setting value of bleed pressure higher than Pneumatic pressure switch, Pneumatic pressure switch exports an air pressure signal, and air pressure signal controls the P mouth of two logical cut-off valves to the conducting of A mouth; When the air failure setting value of bleed pressure lower than Pneumatic pressure switch, Pneumatic pressure switch exports without air pressure signal, and the P mouths of two logical cut-off valves cut off to A mouth.The pressurized air of such pneumatic actuator is blocked, and pneumatic actuator remains on the position before air failure.
Clearly, adopt this kind of scheme to have product and connect and debugging complexity, machine shape volume is large, the shortcoming that cost is high.
Summary of the invention
The object of this invention is to provide a kind of Novel stop valve, the connection of pneumatic instrument can be simplified and improve reliability.
A kind of Novel stop valve, its specialization is: comprise base, commutation chamber, piston cavity and pressure regulating cavity are installed on the base from the bottom to top successively, wherein on commutation chamber, have import and outlet, in this commutation chamber, be provided with valve hole part, the lower end of this valve hole part is connected with base by Returnning spring and its upper end is connected with the gas control piston be arranged in piston cavity internal air pressure chamber, wherein diaphragm support parts are installed in pressure regulating cavity, exhaust port is provided with in the middle of these diaphragm support parts, this exhaust port lower end is communicated with the atmospheric pressure cavity in aforesaid piston cavity by inlet hole, and the upper end of this exhaust port is provided with a steel ball, aforesaid piston cavity also has and detects air pressure mouth, this detection air pressure mouth is communicated with the lower end of these diaphragm support parts by the passage in piston cavity, and the upper end of these diaphragm support parts is provided with screw press, this screw press stretches in pressure regulating cavity from aforesaid pressure regulating cavity, screw press in this pressure regulating cavity is set with look nut, and for being threaded between this screw press with look nut, between this look nut and the upper end of diaphragm support parts, also pressure adjusting spring is installed, on this pressure regulating cavity, also have through hole in addition thus the air pressure inside and outside pressure regulating cavity is consistent.
Wherein diaphragm support parts comprise diaphragm support, in the middle part of this diaphragm support, be provided with boss, and this boss is set with spring seat, and clamping is provided with diaphragm between this diaphragm support and spring seat.
Wherein be provided with boss in the upper end of inlet hole, and on the inwall of this boss, seal ring be installed, thus make seam crossing hermetic seal when the lower end in contact of this boss and diaphragm support parts.
Wherein valve hole part comprises valve core rod, guide piston is set with in the upper end of this valve core rod, and sealed valve core is installed in the lower end of this valve core rod, and be provided with corresponding seal valve seat on commutation cavity wall, thus coordinating conducting or cutting off commutate import on chamber and outlet by sealed valve core and seal valve seat.
Wherein on the outer wall of guide piston, seal ring is installed.
The side wherein contacted with commutation chamber on base is provided with seal ring, and is also provided with seal ring on the outer wall of gas control piston.
Screw press wherein outside pressure regulating cavity is also set with locking nut.
The invention provides a kind of Novel stop valve, it adopts leading type working principle, can detect bleed pressure and realize auto reversive 2/2-way cut-off valve, can be widely used in the gas circuit locking in instrument and meter industry or safety control.Adopt two of leading type working principle logical cut-off valves can substitute the traditional approach adopting pneumatic element combination, simplify the connection of pneumatic instrument and improve reliability.It has simultaneously, and volume is little, cost is low, highly versatile, pressure setting feature flexibly, and this product can be widely used in pneumatic control valve industry.The present invention also has the feature that machine volume is little, range of regulation is large, adopts the sealing configuration of metal seat valve and V-type rubber can ensure sealability and product working life, complete machine low cost of manufacture, highly versatile.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of background technique of the present invention;
Accompanying drawing 2 is structural representation of the present invention;
Accompanying drawing 3 is the structural representation of screw press 11 in the present invention, diaphragm support parts 9 and atmospheric pressure cavity 7 part;
Accompanying drawing 4 is the structural representation of valve hole part 5 in the present invention;
Accompanying drawing 5 is the structural representation of diaphragm support parts 9 in the present invention.
Embodiment
As shown in Fig. 2,3,4,5, the present invention is a kind of Novel stop valve, comprise base 1, this base 1 is provided with commutation chamber 2, piston cavity 3 and pressure regulating cavity 4 from the bottom to top successively, wherein on commutation chamber 2, have import (i.e. A mouth) and outlet (i.e. B mouth), in this commutation chamber 2, be provided with valve hole part 5, the lower end of this valve hole part 5 is connected with base 1 by Returnning spring 6 and its upper end is connected with the gas control piston 8 be arranged in piston cavity 3 internal air pressure chamber 7.
Wherein in pressure regulating cavity 4, diaphragm support parts 9 are installed, exhaust port 18 is provided with in the middle of these diaphragm support parts 9, this exhaust port 18 lower end is communicated with the atmospheric pressure cavity 7 in aforesaid piston cavity 3 by inlet hole 19, and the upper end of this exhaust port 18 is provided with a steel ball 10, aforesaid piston cavity 3 also has and detects air pressure mouth (i.e. S mouth), this detection air pressure mouth is communicated with the lower end of these diaphragm support parts 9 by the passage in piston cavity 3, and the upper end of these diaphragm support parts 9 is provided with screw press 11, this screw press 11 stretches in pressure regulating cavity 4 from aforesaid pressure regulating cavity 4, screw press 11 in this pressure regulating cavity 4 is set with look nut 12, and for being threaded between this screw press 11 with look nut 12, between this look nut 12 and upper end of diaphragm support parts 9, pressure adjusting spring 13 is also installed, on this pressure regulating cavity 4, also have through hole in addition thus the air pressure inside and outside pressure regulating cavity 4 is consistent.
Wherein diaphragm support parts 9 comprise diaphragm support 23, be provided with boss, this boss is set with spring seat 22 in the middle part of this diaphragm support 23, and clamp between this diaphragm support 23 and spring seat 22 and be provided with diaphragm 24.And boss is provided with in the upper end of inlet hole 19, and seal ring 15 is installed on the inwall of this boss, thus makes seam crossing hermetic seal when the lower end in contact of this boss and diaphragm support parts 9.
Wherein valve hole part 5 comprises valve core rod 21, guide piston 20 is set with in the upper end of this valve core rod 21, and sealed valve core 16 is installed in the lower end of this valve core rod 21, and be provided with the seal valve seat 17 of corresponding benchboard scalariform on commutation chamber 2 inwall, thus coordinating conducting or cutting off commutate import on chamber 2 and outlet by sealed valve core 16 and seal valve seat 17.And on the outer wall of guide piston 20, seal ring 15 is installed.
On base 1, with the side that contacts, commutation chamber 2, seal ring 15 is installed in addition, and seal ring 15 is also installed on the outer wall of gas control piston 8, and screw press 11 outside pressure regulating cavity 4 is also set with locking nut 14.
Below in conjunction with accompanying drawing, the present invention is further detailed explanation:
As shown in Fig. 2,3,4,5, complete machine structure of the present invention is as follows: pressure regulating cavity 4, piston cavity 3, commutation chamber 2, base 1 constitute the shell mechanism of cut-off valve; Guide piston 20, valve core rod 21, sealed valve core 16 become as a whole by riveting, and on guide piston 20, install seal ring 15 forms valve hole part 5 simultaneously; Diaphragm 24 by diaphragm support 23 and spring seat 22 clamp and riveting together with component film tablet tray parts 9.
Complete machine working principle is as follows: S mouth (detecting air pressure mouth) input detects air pressure, and diaphragm support parts 9 are subject to atmospheric pressure F1 upwards; When rotating screw press 11, look nut 12 moves downward, and pressure adjusting spring 13 is compressed, and diaphragm support parts 9 are subject to downward spring pressure F2; When atmospheric pressure F1 is greater than spring pressure F2, diaphragm support parts 9 move up and steel ball and screw press 11 are held out against, the exhaust port 18 of diaphragm support parts 9 is blocked by steel ball, diaphragm support 23 seal ring 15 simultaneously in diaphragm support parts 9 is thrown off, and air pressure enters atmospheric pressure cavity 7 by inlet hole 19; Gas control piston 8 produces downward displacement by gas pressure and promotes valve hole part 5 and moves downward, and Returnning spring 6 is compressed, and sealed valve core 16 and seal valve seat 17 are thrown off, A mouth (import) and B mouth (outlet) conducting.
When atmospheric pressure F1 is less than spring pressure F2, diaphragm support parts 9 move down, steel ball and screw press 11 unclamp, the exhaust port 18 of diaphragm support parts 9 is opened, and the diaphragm support 23 in diaphragm support parts 9 compresses with seal ring 15 and seals, and the air pressure in atmospheric pressure cavity 7 is emptying by exhaust port 18; Valve hole part 5 moves upward under the effect of Returnning spring 6, and gas control piston 8 also moves upward simultaneously; Now sealed valve core 16 contacts with seal valve seat 17, and A mouth is to the not conducting of B mouth.
Just can be arranged the air failure setting value of pneumatic instrument by the precompression arranging pressure adjusting spring 13, when the S mouth of Novel stop valve detects bleed pressure higher than air failure settings, the A mouth of cut-off valve is to the conducting of B mouth; When the S mouth of cut-off valve detects that the A mouth of bleed pressure lower than cut-off valve during air failure settings is to the not conducting of B mouth.
Commutation chamber 2, piston cavity 3 are processed with input and output threaded coupling, for the connection of source of the gas input and output.Seal valve seat 17 is directly processed on commutation chamber 2, and sealed valve core 16 is nitrile rubber, can ensure zero leakage after seal valve seat 17 contacts with sealed valve core 16; When screw press 11 adjusts to the safety pressure switching point of needs, can prevent screw press 11 from loosening by locking nut 14; Complete machine structure and piston seal adopt the sealing of O type circle, without leaking outside and interior leakage.Overall design adopts leading type working principle, and small product size is little, range of regulation is wide.
Claims (7)
1. a cut-off valve, it is characterized in that: comprise base (1), this base (1) is provided with commutation chamber (2), piston cavity (3) and pressure regulating cavity (4) from the bottom to top successively, wherein in commutation chamber (2), have import and outlet, in this commutation chamber (2), be provided with valve hole part (5), the lower end of this valve hole part (5) is connected with base (1) by Returnning spring (6) and its upper end is connected with the gas control piston (8) be arranged in piston cavity (3) internal air pressure chamber (7); wherein in pressure regulating cavity (4), diaphragm support parts (9) are installed, exhaust port (18) is provided with in the middle of these diaphragm support parts (9), this exhaust port (18) lower end is communicated with the atmospheric pressure cavity (7) in aforesaid piston cavity (3) by inlet hole (19), and the upper end of this exhaust port (18) is provided with a steel ball (10), aforesaid piston cavity (3) also has and detects air pressure mouth, this detection air pressure mouth is communicated with the lower end of these diaphragm support parts (9) by the passage in piston cavity (3), and the upper end of these diaphragm support parts (9) is provided with screw press (11), this screw press (11) stretches in pressure regulating cavity (4) from aforesaid pressure regulating cavity (4), screw press (11) in this pressure regulating cavity (4) is set with look nut (12), and for being threaded between this screw press (11) with look nut (12), pressure adjusting spring (13) is also installed between this look nut (12) and the upper end of diaphragm support parts (9), on this pressure regulating cavity (4), also have through hole in addition thus the air pressure inside and outside pressure regulating cavity (4) is consistent.
2. cut-off valve as claimed in claim 1, it is characterized in that: wherein diaphragm support parts (9) comprise diaphragm support (23), boss is provided with at this diaphragm support (23) middle part, this boss is set with spring seat (22), and clamps between this diaphragm support (23) and spring seat (22) diaphragm (24) is installed.
3. cut-off valve as claimed in claim 1, it is characterized in that: be wherein provided with boss in the upper end of inlet hole (19), and seal ring (15) is installed on the inwall of this boss, thus makes seam crossing hermetic seal when the lower end in contact of this boss and diaphragm support parts (9).
4. as the cut-off valve in claims 1 to 3 as described in any one, it is characterized in that: wherein valve hole part (5) comprises valve core rod (21), guide piston (20) is set with in the upper end of this valve core rod (21), and sealed valve core (16) is installed in the lower end of this valve core rod (21), and be provided with corresponding seal valve seat (17) on commutation chamber (2) inwall, thus coordinating conducting or cutting off commutate import on chamber (2) and outlet by sealed valve core (16) and seal valve seat (17).
5. cut-off valve as claimed in claim 4, is characterized in that: wherein on the outer wall of guide piston (20), be provided with seal ring (15).
6. as the cut-off valve in claims 1 to 3 as described in any one, it is characterized in that: wherein in base (1) the upper side contacted with commutation chamber (2), seal ring (15) is installed, and on the outer wall of gas control piston (8), seal ring (15) is also installed.
7. as the cut-off valve in claims 1 to 3 as described in any one, it is characterized in that: wherein on pressure regulating cavity (4) screw press outward (11), be also set with locking nut (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310651918.8A CN103672066B (en) | 2013-12-05 | 2013-12-05 | Cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310651918.8A CN103672066B (en) | 2013-12-05 | 2013-12-05 | Cut-off valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103672066A CN103672066A (en) | 2014-03-26 |
| CN103672066B true CN103672066B (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310651918.8A Active CN103672066B (en) | 2013-12-05 | 2013-12-05 | Cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103672066B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994114A (en) * | 2014-05-14 | 2014-08-20 | 吴忠仪表有限责任公司 | Novel three-way reversing valve |
| CN103994265A (en) * | 2014-05-14 | 2014-08-20 | 吴忠仪表有限责任公司 | Novel two-way locking valve |
| CN104847904A (en) * | 2015-05-26 | 2015-08-19 | 杨舟 | Pneumatic cut-off valve |
| CN105605016A (en) * | 2016-03-03 | 2016-05-25 | 安徽万荣航天设备有限公司 | Automatic reset hydraulic manual valve |
| CN106195297B (en) * | 2016-08-30 | 2019-01-22 | 航宇救生装备有限公司 | Multi-functional lung formula valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069515U (en) * | 1989-12-27 | 1991-01-16 | 范瑾 | Leading diaphragm type stop valve |
| CN2913781Y (en) * | 2006-06-14 | 2007-06-20 | 李松 | Pressure regulating dump valve |
| CN201090823Y (en) * | 2007-08-29 | 2008-07-23 | 中山市调节阀厂有限公司 | Pneumatic two-position cut-off valve |
| CN201416643Y (en) * | 2009-05-20 | 2010-03-03 | 泰安凯瑞特包装材料有限公司 | Cutoff valve for pharmacy |
| CN202165657U (en) * | 2011-07-27 | 2012-03-14 | 浙江百灵气动科技有限公司 | Lock valve |
| CN203614838U (en) * | 2013-12-05 | 2014-05-28 | 吴忠仪表有限责任公司 | Automatic pressure measurement two-way stop valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8826933B2 (en) * | 2006-09-29 | 2014-09-09 | Fisher Controls International Llc | Positioning device for pressure regulator |
| US9027581B2 (en) * | 2010-04-27 | 2015-05-12 | Dresser, Inc. | Pneumatic controlled slam shut valve |
-
2013
- 2013-12-05 CN CN201310651918.8A patent/CN103672066B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069515U (en) * | 1989-12-27 | 1991-01-16 | 范瑾 | Leading diaphragm type stop valve |
| CN2913781Y (en) * | 2006-06-14 | 2007-06-20 | 李松 | Pressure regulating dump valve |
| CN201090823Y (en) * | 2007-08-29 | 2008-07-23 | 中山市调节阀厂有限公司 | Pneumatic two-position cut-off valve |
| CN201416643Y (en) * | 2009-05-20 | 2010-03-03 | 泰安凯瑞特包装材料有限公司 | Cutoff valve for pharmacy |
| CN202165657U (en) * | 2011-07-27 | 2012-03-14 | 浙江百灵气动科技有限公司 | Lock valve |
| CN203614838U (en) * | 2013-12-05 | 2014-05-28 | 吴忠仪表有限责任公司 | Automatic pressure measurement two-way stop valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103672066A (en) | 2014-03-26 |
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