CN103672066A - Novel stop valve - Google Patents
Novel stop valve Download PDFInfo
- Publication number
- CN103672066A CN103672066A CN201310651918.8A CN201310651918A CN103672066A CN 103672066 A CN103672066 A CN 103672066A CN 201310651918 A CN201310651918 A CN 201310651918A CN 103672066 A CN103672066 A CN 103672066A
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- CN
- China
- Prior art keywords
- valve
- cavity
- diaphragm support
- piston
- pressure regulating
- 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
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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
Abstract
The invention relates to a novel stop valve. The novel stop valve is characterized in that the novel stop valve comprises a base (1), a reversing cavity (2), a piston cavity (3) and a pressure regulating cavity (4) are sequentially installed on the base (1) from bottom to top, the reversing cavity (2) is provided with an inlet and an outlet, a valve element component (5) is installed in the reversing cavity (2), the lower end of the valve element component (5) is connected with the base (1) through a reset spring (6), the upper end of the valve element component (5) is connected with an air-controlled piston (8) installed in an air pressure cavity (7) in the piston cavity (3), a diaphragm tray component (9) is installed in the pressure regulating cavity (4), and an exhaust hole (18) is formed in the middle of the diaphragm tray component (9). The pilot-operated type operating principle is adopted in the novel stop valve, and the two-position two-way stop valve can detect air source pressure and achieve automatic reversing.
Description
Technical field
The present invention relates to a kind of novel cut-off valve.
Background technique
Traditional control program is as follows: while needing detected pressures and realizing gas circuit to cut off in Pneumatic control circuit, employing " Pneumatic pressure switch " and " two logical cut-off valves " combination realize.As shown in Figure 1, with the control case of the pneumatic control valve in flow process control industry, sketch traditional control program.Reduction valve will be input to positioning work piece after source of the gas decompression, 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 during lower than air failure setting value, control system requires pneumatic actuator to remain on the position before air failure.Pneumatic pressure switch is for detection of the delivery pressure of reduction valve, when bleed pressure is during higher than the air failure setting value of Pneumatic pressure switch, and an air pressure signal of Pneumatic pressure switch output, air pressure signal is controlled the P mouths of two logical cut-off valves to the conducting of A mouth; When bleed pressure is during lower than the air failure setting value of Pneumatic pressure switch, Pneumatic pressure switch is exported without air pressure signal, and the P mouths of two logical cut-off valves cut off to A mouth.The pressurized air of pneumatic actuator is blocked like this, and pneumatic actuator remains on the position before air failure.
Clearly, adopt this kind of scheme to have product and connect and debug 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 cut-off valve, can simplify the connection of pneumatic instrument and improve reliability.
A kind of novel cut-off valve, its specialization is: comprise base, commutation chamber, piston cavity and pressure regulating cavity are installed successively from the bottom to top on this base, wherein on commutation chamber, have import and outlet, in this commutation chamber, valve hole part is installed, 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 being arranged in piston cavity internal air pressure chamber, diaphragm support parts are wherein installed in pressure regulating cavity, in the middle of these diaphragm support parts, be provided with exhaust port, 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, in aforesaid piston cavity, also have and detect 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, on screw press in this pressure regulating cavity, be set with look nut, and between this screw press and look nut for being threaded, between this look nut and the upper end of diaphragm support parts, pressure adjusting spring is also installed, thereby on this pressure regulating cavity, also having in addition through hole is consistent the air pressure inside and outside pressure regulating cavity.
Wherein diaphragm support parts comprise diaphragm support, at this diaphragm support middle part, are provided with boss, be set with spring seat, and clamping are provided with diaphragm between this diaphragm support and spring seat on this boss.
Wherein in the upper end of inlet hole, be provided with boss, and on the inwall of this boss, seal ring be installed, thereby 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, upper end at this valve core rod is set with guide piston, 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, thereby can import and the outlet on conducting or cut-out commutation chamber that coordinate with seal valve seat by sealed valve core.
Wherein on the outer wall of guide piston, seal ring is installed.
The side wherein contacting with commutation chamber on base is provided with seal ring, and on the outer wall of gas control piston, seal ring is also installed.
Wherein on the screw press outside pressure regulating cavity, be also set with locking nut.
The invention provides a kind of novel cut-off 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 gas circuit locking or safety control in instrument and meter industry.Adopt two logical cut-off valves of leading type working principle can substitute the traditional control program that adopts pneumatic element combination, simplified the connection of pneumatic instrument and improved reliability.It has that volume is little, cost is low simultaneously, 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 guarantee 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, diaphragm support parts 9 and atmospheric pressure cavity 7 parts in the present invention;
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 cut-off valve, comprise base 1, commutation chamber 2, piston cavity 3 and pressure regulating cavity 4 are installed successively from the bottom to top on this base 1, wherein on commutation chamber 2, have import (being A mouth) and outlet (being B mouth), in this commutation chamber 2, valve hole part 5 is installed, 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 being arranged in piston cavity 3 internal air pressure chambeies 7.
Wherein diaphragm support parts 9 comprise diaphragm support 23, at these diaphragm support 23 middle parts, are provided with boss, are set with spring seat 22 on this boss, and clamping is provided with diaphragm 24 between this diaphragm support 23 and spring seat 22.And in the upper end of inlet hole 19, be provided with boss, and seal ring 15 is installed on the inwall of this boss, thus when the lower end in contact of this boss and diaphragm support parts 9, make seam crossing hermetic seal.
Wherein valve hole part 5 comprises valve core rod 21, in the upper end of this valve core rod 21, be set with guide piston 20, and sealed valve core 16 is installed in the lower end of this valve core rod 21, and on commutation chamber 2 inwalls, be provided with the seal valve seat 17 of corresponding benchboard scalariform, thereby can the import and the outlet that coordinate conducting or cut-out to commutate on chamber 2 with seal valve seat 17 by sealed valve core 16.And seal ring 15 is installed on the outer wall of guide piston 20.
On base 1, with the side that contacts of 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 be also set with locking nut 14 on screw press 11 outside pressure regulating cavity 4.
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 have formed the shell mechanism of cut-off valve; Guide piston 20, valve core rod 21, sealed valve core 16 become as a whole by riveting, install seal ring 15 simultaneously and form valve hole part 5 on guide piston 20; Diaphragm 24 by diaphragm support 23 and spring seat 22, clamped 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 rotation 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 steel ball and screw press 11 are held out against, steel ball is blocked the exhaust port of diaphragm support parts 9 18, diaphragm support in diaphragm support parts 9 23 seal rings 15 are thrown off simultaneously, and air pressure enters atmospheric pressure cavity 7 by inlet hole 19; Gas control piston 8 is subject to gas pressure to produce downward displacement and promotes valve hole part 5 to move downward, and Returnning spring 6 is compressed, and sealed valve core 16 is thrown off with seal valve seat 17, 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 and seals with seal ring 15, 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.
The air failure setting value of pneumatic instrument just can be set by the precompression of pressure adjusting spring 13 is set, and when the S of novel cut-off valve mouth 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 of cut-off valve mouth detects bleed pressure lower than air failure settings, the A mouth of cut-off valve is to the not conducting of B mouth.
In commutation chamber 2, piston cavity 3, be 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, and seal valve seat 17 can guarantee zero leakage after contacting with sealed valve core 16; When screw press 11 is adjusted to the safety pressure switching point needing, by locking nut 14, can prevent that screw press 11 is loosening; 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 novel cut-off valve, it is characterized in that: comprise base (1), commutation chamber (2), piston cavity (3) and pressure regulating cavity (4) are installed successively from the bottom to top on this base (1), wherein on commutation chamber (2), have import and outlet, in this commutation chamber (2), valve hole part (5) is installed, 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) being arranged in piston cavity (3) internal air pressure chamber (7), diaphragm support parts (9) are wherein installed in pressure regulating cavity (4), in the middle of these diaphragm support parts (9), be provided with exhaust port (18), 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), in aforesaid piston cavity (3), also have and detect air pressure mouth, this detects air pressure mouth and 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), on screw press (11) in this pressure regulating cavity (4), be set with look nut (12), and between this screw press (11) and look nut (12) for being threaded, between this look nut (12) and the upper end of diaphragm support parts (9), pressure adjusting spring (13) is also installed, in addition at this pressure regulating cavity (4) thus on also have through hole the inside and outside air pressure of pressure regulating cavity (4) be consistent.
2. novel cut-off valve as claimed in claim 1, it is characterized in that: wherein diaphragm support parts (9) comprise diaphragm support (23), at this diaphragm support (23) middle part, be provided with boss, on this boss, be set with spring seat (22), and clamping is provided with diaphragm (24) between this diaphragm support (23) and spring seat (22).
3. novel cut-off valve as claimed in claim 1, it is characterized in that: wherein in the upper end of inlet hole (19), be provided with boss, and seal ring (15) is installed on the inwall of this boss, thereby makes seam crossing hermetic seal when the lower end in contact of this boss and diaphragm support parts (9).
4. the novel cut-off valve as described in any one in claims 1 to 3, it is characterized in that: wherein valve hole part (5) comprises valve core rod (21), in the upper end of this valve core rod (21), be set with guide piston (20), 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, thereby can pass through the import and the outlet that coordinate conducting or cut-out to commutate on chamber (2) of sealed valve core (16) and seal valve seat (17).
5. novel cut-off valve as claimed in claim 4, is characterized in that: seal ring (15) is wherein installed on the outer wall of guide piston (20).
6. the novel cut-off valve as described in any one in claims 1 to 3, it is characterized in that: wherein in the upper side contacting with commutation chamber (2) of base (1), seal ring (15) is installed, and seal ring (15) is also installed on the outer wall of gas control piston (8).
7. the novel cut-off valve as described in any one in claims 1 to 3, is characterized in that: wherein on the screw press (11) outside pressure regulating cavity (4), 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 true CN103672066A (en) | 2014-03-26 |
| CN103672066B 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) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994265A (en) * | 2014-05-14 | 2014-08-20 | 吴忠仪表有限责任公司 | Novel two-way locking valve |
| CN103994114A (en) * | 2014-05-14 | 2014-08-20 | 吴忠仪表有限责任公司 | Novel three-way reversing 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 (8)
| 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 |
| US20080078460A1 (en) * | 2006-09-29 | 2008-04-03 | Roper Daniel G | Positioning Device for Pressure Regulator |
| 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 |
| US20110259434A1 (en) * | 2010-04-27 | 2011-10-27 | Butler David C | Pneumatic Controlled Slam Shut Valve |
| 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 |
-
2013
- 2013-12-05 CN CN201310651918.8A patent/CN103672066B/en active Active
Patent Citations (8)
| 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 |
| US20080078460A1 (en) * | 2006-09-29 | 2008-04-03 | Roper Daniel G | Positioning Device for Pressure Regulator |
| 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 |
| US20110259434A1 (en) * | 2010-04-27 | 2011-10-27 | Butler David C | Pneumatic Controlled Slam Shut Valve |
| 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994265A (en) * | 2014-05-14 | 2014-08-20 | 吴忠仪表有限责任公司 | Novel two-way locking valve |
| CN103994114A (en) * | 2014-05-14 | 2014-08-20 | 吴忠仪表有限责任公司 | Novel three-way reversing 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103672066B (en) | 2016-03-23 |
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