CN102182833A - Flow control switch - Google Patents
Flow control switch Download PDFInfo
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- CN102182833A CN102182833A CN 201110135989 CN201110135989A CN102182833A CN 102182833 A CN102182833 A CN 102182833A CN 201110135989 CN201110135989 CN 201110135989 CN 201110135989 A CN201110135989 A CN 201110135989A CN 102182833 A CN102182833 A CN 102182833A
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Abstract
The invention discloses a flow control switch which comprises a fluid valve. The fluid valve at least comprises a valve body and a valve seat, wherein the valve seat is arranged in the valve body; the valve body is provided with two connectors used for communicating with fluid pipelines, the valve seat is fixed in the valve body and is arranged between the two connectors in the valve body, the valve seat is provided with a fluid through hole. The flow control switch is characterized in that a driving diaphragm capsule with a closed cavity is fixed on the valve body, an elastic element I is arranged on the diaphragm capsule and can drive a diaphragm on the diaphragm capsule to rise and fall according to the change of pressure inside the diaphragm capsule so as to open or close the fluid valve, and the elastic element I and the fluid through-hole on the valve seat are arranged face to face. According to the invention, the driving diaphragm capsule is arranged and can drive the diaphragm to rise and fall because of the pressure change (or pressure change in the diaphragm capsule caused by the temperature change), thus driving a valve plug to press or separate from the valve seat to complete on/off operation. The flow control switch has a simple structure, action reliability, small volume and low cost.
Description
Technical field
The present invention relates to be specially a kind of flow control switch by bellows or bellows, the control fluid field of flowing.
Background technique
The condenser for refrigerator pressure-retaining system has two kinds at present.A kind ofly be made up of solenoid valve and one-way valve, when compressor shutdown, these two valves cut out together, the refrigeration agent in the condenser are enclosed in the condenser, when starting shooting next time.This solenoid valve price height, reliability is low.Another kind is made up of float valve and one-way valve, and this float valve volume is big, complex structure.
Summary of the invention
Technical problem to be solved by this invention provides a kind of simple in structure, reliability is high, volume is little flow control switch.
The present invention solves the problems of the technologies described above the technological scheme that is adopted: a kind of flow control switch, have a fluid valve, and this fluid valve comprises valve body and valve seat at least, and valve seat is positioned at valve body; Be shaped on 2 on the valve body and be used for the interface that is connected with fluid line, valve seat is fixed in the valve body and in valve body between 2 interfaces, be shaped on fluid on the valve seat simultaneously and pass through the hole, it is characterized in that on valve body, fixing a driving bellows with sealed cavity, and be equipped with on this bellows and change the diaphragm that drives on the bellows according to this bellows internal pressure and rise and fall and realize fluid valve sealing or the elastic element I that opens, elastic element I fluid on the valve seat is provided with by the hole.
The present invention can comprise the technological scheme of following at least 9 variations under above-mentioned basic structure, be respectively:
Scheme 1: described bellows upper end is shaped on the interface that is connected with pressure source, and described bellows lower end is sealed with elastic element I; And this bellows bottom places in the valve body, and the fluid on the valve seat is by being equipped with spool in the hole, and the spool upper end withstands on elastic element I bottom and realizes the fluid valve sealing or open with the fluctuating upper and lower displacement of elastic element I.
Scheme 2: described bellows upper end is shaped on the interface that is connected with pressure source, and described bellows lower end is sealed with elastic element I; And this bellows bottom connects as one by support and valve body, also be equipped with in the valve body upper opening with bellows on elastic element I position corresponding elastic element II; Fluid on the valve seat is by being equipped with spool in the hole, the spool upper end withstands on that elastic element II goes up and realizes the fluid valve sealing or open with the fluctuating upper and lower displacement of elastic element II.
Scheme 3: described bellows upper end is shaped on the interface that is connected with pressure source, and described bellows lower end is sealed with elastic element I; Valve body places in the bellows, also be equipped with in the valve body lower portion opening with bellows on elastic element I position corresponding elastic element II; Fluid on the valve seat is by connecting an extension tube on the hole, and this extension tube withstands on that elastic element II goes up and by the fluctuating sealing of elastic element II or open and realize the fluid valve sealing or open.
Scheme 4: described bellows is an enclosed construction, and wherein be filled with an amount of refrigeration agent, described bellows lower end places in the valve body with elastic element I sealing and this bellows bottom, fluid on the valve seat is by being equipped with spool in the hole, spool upper end withstands on elastic element I bottom and realizes the fluid valve sealing or open with the fluctuating upper and lower displacement of elastic element I, on this bellows heater is housed simultaneously.
Scheme 5: described bellows is an enclosed construction, and wherein be filled with an amount of refrigeration agent, described bellows lower end is sealed with elastic element I, on this bellows heater is housed simultaneously, this bellows bottom connects as one by support and valve body, also be equipped with in the valve body upper opening with bellows on elastic element I position corresponding elastic element II; Fluid on the valve seat is by being equipped with spool in the hole, the spool upper end withstands on that elastic element II goes up and realizes the fluid valve sealing or open with the fluctuating upper and lower displacement of elastic element II.
Scheme 6: described bellows is an enclosed construction, and wherein be filled with an amount of refrigeration agent, heater is equipped with on this bellows simultaneously with elastic element I sealing in described bellows lower end, valve body places in the bellows, also be equipped with in the valve body lower portion opening with bellows on elastic element I position corresponding elastic element II; Fluid on the valve seat is by connecting an extension tube on the hole, and this extension tube withstands on that elastic element II goes up and by the fluctuating sealing of elastic element II or open and realize the fluid valve sealing or open.
Scheme 7: described bellows is an enclosed construction, and wherein be filled with an amount of refrigeration agent, described bellows lower end places in the valve body with elastic element I sealing and bottom, and the fluid that elastic element I gets lodged on the valve seat realizes that with the diaphragm fluctuating fluid valve seals or opens, and is connected with temp.-sensing head by pipeline on this bellows simultaneously by top, hole.
Scheme 9: described bellows is an enclosed construction, and wherein be filled with an amount of refrigeration agent, described bellows lower end is sealed with elastic element I, be connected with temp.-sensing head by pipeline on this bellows simultaneously, valve body places in the bellows, also be equipped with in the valve body lower portion opening with bellows on elastic element I position corresponding elastic element II; Fluid on the valve seat is by being equipped with spool in the hole, spool one end withstands on that elastic element II goes up and realizes the fluid valve sealing or open with the fluctuating upper and lower displacement of elastic element II.
The present invention drives bellows owing to have one, and this bellows or cut-in pressure source are are directly risen and fallen by the pressure source driven diaphragm, perhaps by the refrigeration agent in the temperature source heating sealing bellows, makes the bellows internal pressure change, and driven diaphragm rises and falls; Seal or open thereby drive fluid valve, play on-off action.Have simple in structure, reliable in action, volume is little, cost is low characteristics.
Description of drawings:
Fig. 1 is the structural representation of the embodiment of the invention one;
Fig. 2 is the structural representation of the embodiment of the invention two;
Fig. 3 is the structural representation of the embodiment of the invention three;
Fig. 4 is the structural representation of the embodiment of the invention four;
Fig. 5 is the structural representation of the embodiment of the invention five;
Fig. 6 is the structural representation of the embodiment of the invention six;
Fig. 7 is the structural representation of the embodiment of the invention seven;
Fig. 8 is the structural representation of the embodiment of the invention eight;
Fig. 9 is the structural representation of the embodiment of the invention nine.
Embodiment:
Below in conjunction with accompanying drawing 1-9 the several embodiments of the present invention are described in further detail.
Embodiment one:
As shown in Figure 1, the present embodiment flow control switch, it has bellows 1, valve body 4 and support 7.Valve seat 5 is positioned at valve body 4; Be shaped on 2 on the valve body 4 and be used for the interface that is connected with fluid line, valve seat 5 is fixed in the valve body 4 and between 2 interfaces, is shaped on fluid on the valve seat 5 simultaneously and passes through the hole in valve body 4.Have 1 interface to be connected with pressure source on its bellows 1, I2 also has elastic component; Have elastic component in the valve body 4 II3, valve seat 5 and spool 6 connect two interfaces of fluid circuit in addition; Support 7 connects together bellows 1 and valve body 4.When pressure source pressure raise, elastic element I2 projection promoted spool 6 through elastic element II3 and lifts off a seat valve open; When pressure source pressure descended, elastic element I2 is recessed to push down valve seat, valve closing through elastic element II3 drive spool 6.According to actual needs can be fixedly connected between spool 6 and the elastic element I2; Also can connect, and on spool 6, Returnning spring is set.For example elastic element II3 just plays the effect of Returnning spring in the present embodiment.In addition, the elastic element among the present invention directly can adopt the diaphragm in the bellows also passable, certainly, adopts the bellows internal fixation to have
Embodiment two:
As shown in Figure 2, the present embodiment flow control switch, it has bellows 1, valve body 4 and valve seat 5.Have 1 interface to be connected with pressure source on the bellows 1, I2 and elastic element II3 also have elastic component; Have elastic component in the valve body 4 II3 and valve seat 5 connect two interfaces of fluid circuit in addition; Valve body 4 places in the bellows 1.The fluid valve of present embodiment does not need spool, adopts the mode of the direct closed valve seat of diaphragm (elastic element) to get final product.Fluid on the valve seat 5 is by connecting an extension tube on the hole, and this extension tube withstands on that elastic element II3 goes up and by the fluctuating sealing of elastic element II3 or open and realize the fluid valve sealing or open.When pressure source pressure raise, elastic element I2 projection was moved closed valve seat 5 upper extension tube openings, valve open on elastic element II3; When pressure source pressure descended, elastic element I2 is recessed to push down upper valve seat extension tube opening, valve closing through elastic element II3.
Embodiment three:
As shown in Figure 3, the present embodiment flow control switch, it has bellows 1, valve body 4.Valve seat 5 is positioned at valve body 4; Be shaped on 2 on the valve body 4 and be used for the interface that is connected with fluid line, valve seat 5 is fixed in the valve body 4 and between 2 interfaces, is shaped on fluid on the valve seat 5 simultaneously and passes through the hole in valve body 4.Have 1 interface to be connected with pressure source on its bellows 1, I2 also has elastic component; Bellows 1 places in the valve body 4.When pressure source pressure raise, elastic element I2 projection promoted spool 6 and lifts off a seat valve open; When pressure source pressure descended, the recessed drive spool 6 of elastic element I2 was pushed down valve seat, valve closing.
Embodiment four:
As shown in Figure 4, the present embodiment flow control switch, it has bellows 1, valve body 4 and support 7.Bellows 1 seals, and wherein is filled with an amount of refrigeration agent, and I2 and heater 8 also have elastic component; Have elastic component 3 in the valve body 4, valve seat 5 and spool 6, connect two interfaces of fluid circuit in addition; Support 7 connects together bellows 1 and valve body 4.When heater 8 temperature raise, the refrigeration agent in the heating bellows 1 raise its pressure, and elastic element I2 projection promotes spool 6 through elastic element II3 and lifts off a seat valve open; When heater 8 temperature descended, the refrigeration agent in the cooling bellows 1 descended its pressure, and elastic element I2 is recessed to push down valve seat, valve closing through elastic element II3 drive spool 6.
Embodiment five:
As shown in Figure 5, the present embodiment flow control switch, it has bellows 1 and valve body 4.Bellows 1 seals, and wherein is filled with an amount of refrigeration agent, also has elastic component 2 and heater 8; Have elastic component in the valve body 4 II3, valve seat 5 connect two interfaces of fluid circuit in addition; Valve body 4 places in the bellows 1.Fluid on the valve seat 5 is by connecting an extension tube on the hole, and this extension tube withstands on that elastic element II3 goes up and by the fluctuating sealing of elastic element II3 or open and realize the fluid valve sealing or open.When heater 8 temperature raise, the refrigeration agent in the heating bellows 1 raise its pressure, and elastic element I2 projection is lifted off a seat valve open through elastic element II3 pulling; When heater 8 temperature descended, the refrigeration agent in the cooling bellows 1 descended its pressure, and recessed the moving down through elastic element II3 of elastic element I2 pushed down valve seat upper extension tube opening, valve closing.
Embodiment six:
As shown in Figure 6, the present embodiment flow control switch, it has bellows 1 and valve body 4.Bellows 1 seals, and wherein is filled with an amount of refrigeration agent, and I2 and heater 8 also have elastic component; Valve seat 5 and spool 6 are arranged in the valve body 4, connect two interfaces of fluid circuit in addition; Bellows 1 places in the valve body 4.When heater 8 temperature raise, the refrigeration agent in the heating bellows 1 raise its pressure, and elastic element I2 projection promotes spool 6 and lifts off a seat valve open; When heater 8 temperature descended, the refrigeration agent in the cooling bellows 1 descended its pressure, and elastic element 2 recessed drive spools 6 are pushed down valve seat, valve closing.
Embodiment seven:
As shown in Figure 7, the present embodiment flow control switch, it has bellows 1, valve body 4 and support 7.Bellows 1 seals, and wherein is filled with an amount of refrigeration agent, and I2 and temp.-sensing head 9 also have elastic component; Have elastic component in the valve body 4 II3, valve seat 5 and spool 6 connect two interfaces of fluid circuit in addition; Support 7 connects together bellows 1 and valve body 4.When temp.-sensing head 9 temperature descended, the refrigeration agent in the bellows 1 condensed in temp.-sensing head 9, and the pressure in the bellows 1 is descended, and elastic element I2 is recessed, lifted off a seat valve open through elastic element II3 pulling spool 6; When temp.-sensing head 9 temperature rose, the pressure in the bellows 1 rose, and elastic element I2 projection promotes spool 6 through elastic element II3 and pushes down valve seat, valve closing.
Embodiment eight:
As shown in Figure 8, the present embodiment flow control switch, it has bellows 1, valve body 4.Bellows 1 seals, and wherein is filled with an amount of refrigeration agent, and I2 and temp.-sensing head 9 also have elastic component; Have elastic component in the valve body 4 II3, valve seat 5 and spool 6 connect two interfaces of fluid circuit in addition; Valve body 4 places in the bellows 1.When temp.-sensing head 9 temperature descended, the refrigeration agent in the bellows 1 condensed in temp.-sensing head 9, and the pressure in the bellows 1 is descended, and elastic element I2 is recessed, promotes spool 6 through elastic element II3 and lifts off a seat valve open; When temp.-sensing head 9 temperature rose, the pressure in the bellows 1 rose, and elastic element I2 projection is pushed down valve seat, valve closing through elastic element II3 pulling spool 6.
Embodiment nine:
As shown in Figure 9, the present embodiment flow control switch, it has bellows 1, valve body 4.Bellows 1 seals, and wherein is filled with an amount of refrigeration agent, and I2 and temp.-sensing head 9 also have elastic component; Valve seat 5 and two interfaces that are connected fluid circuit are arranged in the valve body 4; Fluid on the valve seat by the hole over against elastic element I2.Bellows 1 bottom places in the valve body 4.When temp.-sensing head 9 temperature descended, the refrigeration agent in the bellows 1 condensed in temp.-sensing head 9, and the pressure in the bellows 1 is descended, and the recessed fluid that leaves of elastic element I2 is by the hole, and fluid valve is opened; When temp.-sensing head 9 temperature rose, pressure in the bellows 1 rose, and elastic element I2 projection is pushed down fluid and made its sealing by the hole, and fluid valve is closed.
Embodiment of the invention 1-9 has just provided typical embodiment of the present invention; has similar diaphragm pump of the present invention so long as adopt; thereby utilizing the bellows internal pressure to change driven diaphragm fluctuating drive fluid valve seals or opens; the fluid switch that plays on-off action is all at the row of protection domain of the present invention; such as; in embodiment 2,5,9, adopt fluid valve can realize the present invention equally with spool; also can between two elastic elements of embodiment 1,4,7, increase a jacking block; transmit pressure by this jacking block, can make that spool work is more reliable.
Claims (10)
1. a flow control switch has a fluid valve, and this fluid valve comprises valve body (4) and valve seat (5) at least, and valve seat (5) is positioned at valve body (4); Be shaped on 2 on the valve body (4) and be used for the interface that is connected with fluid line, valve seat (5) is fixed in the valve body (4) and is arranged between (4) 2 interfaces of valve body, be shaped on fluid on the valve seat (5) simultaneously and pass through the hole, it is characterized in that on valve body (4), fixing a driving bellows (1) with sealed cavity, and the diaphragm fluctuating that changes on the driving bellows (1) according to this bellows (1) internal pressure is housed on this bellows (1) realizes fluid valve sealing or the elastic element I (2) that opens, elastic element I (2) goes up fluid over against valve seat (5) and is provided with by the hole.
2. flow control switch according to claim 1 is characterized in that described bellows (1) upper end is shaped on the interface that is connected with pressure source, and described bellows (1) lower end is sealed with elastic element I (2); And this bellows (1) bottom places in the valve body (4), and the fluid on the valve seat (5) is by being equipped with spool (6) in the hole, and spool (6) upper end withstands on elastic element I (2) bottom and realizes the fluid valve sealing or open with the fluctuating upper and lower displacement of elastic element I (2).
3. flow control switch according to claim 1 is characterized in that described bellows (1) upper end is shaped on the interface that is connected with pressure source, and described bellows (1) lower end is sealed with elastic element I (2); And this bellows (1) is following to connect as one by support (7) and valve body (4), also is equipped with in valve body (4) upper opening with bellows (1) and goes up elastic element I (2) position corresponding elastic element II (3); Fluid on the valve seat (5) is by being equipped with spool (6) in the hole, spool (6) upper end withstands on that elastic element II (3) goes up and realizes the fluid valve sealing or open with the fluctuating upper and lower displacement of elastic element II (3).
4. flow control switch according to claim 1 is characterized in that described bellows (1) upper end is shaped on the interface that is connected with pressure source, and described bellows (1) lower end is sealed with elastic element I (2); Valve body (4) places in the bellows (1), also is equipped with in valve body (4) lower openings with bellows (1) and goes up elastic element I (2) position corresponding elastic element II (3); Fluid on the valve seat (5) is by connecting an extension tube on the hole, and this extension tube withstands on that elastic element II (3) goes up and by the fluctuating sealing of elastic element II (3) or open and realize the fluid valve sealing or open.
5. flow control switch according to claim 1, it is characterized in that described bellows (1) is an enclosed construction, and wherein be filled with an amount of refrigeration agent, described bellows (1) lower end places in the valve body (4) with elastic element I (2) sealing and this bellows (1) bottom, fluid on the valve seat (5) is by being equipped with spool (6) in the hole, spool (6) upper end withstands on elastic element I (2) bottom and realizes the fluid valve sealing or open with the fluctuating upper and lower displacement of elastic element I (2), on this bellows (1) heater (8) is housed simultaneously.
6. flow control switch according to claim 1, it is characterized in that described bellows (1) is an enclosed construction, and wherein be filled with an amount of refrigeration agent, described bellows (1) lower end is sealed with elastic element I (2), on this bellows (1) heater (8) is housed simultaneously, this bellows (1) is following to connect as one by support (7) and valve body (4), also is equipped with in valve body (4) upper opening with bellows (1) and goes up elastic element I (2) position corresponding elastic element II (3); Fluid on the valve seat (5) is by being equipped with spool (6) in the hole, spool (6) upper end withstands on that elastic element II (3) goes up and realizes the fluid valve sealing or open with the fluctuating upper and lower displacement of elastic element II (3).
7. flow control switch according to claim 1, it is characterized in that described bellows (1) is an enclosed construction, and wherein be filled with an amount of refrigeration agent, described bellows (1) lower end is sealed with elastic element I (2), on this bellows (1) heater (8) is housed simultaneously, valve body (4) places in the bellows (1), also is equipped with in valve body (4) lower openings with bellows (1) and goes up elastic element I (2) position corresponding elastic element II (3); Fluid on the valve seat (5) is by connecting an extension tube on the hole, and this extension tube withstands on that elastic element II (3) goes up and by the fluctuating sealing of elastic element II (3) or open and realize the fluid valve sealing or open.
8. flow control switch according to claim 1, it is characterized in that described bellows (1) is an enclosed construction, and wherein be filled with an amount of refrigeration agent, described bellows (1) lower end places in the valve body (4) with elastic element I (2) sealing and bottom, and the fluid that elastic element I (2) gets lodged on the valve seat (5) realizes that with the diaphragm fluctuating fluid valve seals or opens by top, hole, and this bellows (1) is gone up and is connected with temp.-sensing head (9) by pipeline simultaneously.
9. flow control switch according to claim 1, it is characterized in that described bellows (1) is an enclosed construction, and wherein be filled with an amount of refrigeration agent, described bellows (1) lower end is sealed with elastic element I (2), this bellows (1) is gone up and is connected with temp.-sensing head (9) by pipeline simultaneously, this bellows (1) is following to connect as one by support (7) and valve body (4), also is equipped with in valve body (4) upper opening with bellows (1) and goes up elastic element I (2) position corresponding elastic element II (3); Fluid on the valve seat (5) is by being equipped with spool (6) in the hole, spool (6) upper end withstands on that elastic element II (3) goes up and realizes the fluid valve sealing or open with the fluctuating upper and lower displacement of elastic element II (3).
10. flow control switch according to claim 1, it is characterized in that described bellows (1) is an enclosed construction, and wherein be filled with an amount of refrigeration agent, described bellows (1) lower end is sealed with elastic element I (2), this bellows (1) is gone up and is connected with temp.-sensing head (9) by pipeline simultaneously, valve body (4) places in the bellows (1), also is equipped with in valve body (4) lower openings with bellows (1) and goes up elastic element I (2) position corresponding elastic element II (3); Fluid on the valve seat (5) is by being equipped with spool (6) in the hole, spool (6) one ends withstand on that elastic element II (3) goes up and realize the fluid valve sealing or open with the fluctuating upper and lower displacement of elastic element II (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110135989 CN102182833B (en) | 2011-05-25 | 2011-05-25 | Flow control switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110135989 CN102182833B (en) | 2011-05-25 | 2011-05-25 | Flow control switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102182833A true CN102182833A (en) | 2011-09-14 |
| CN102182833B CN102182833B (en) | 2013-03-13 |
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ID=44569096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110135989 Expired - Fee Related CN102182833B (en) | 2011-05-25 | 2011-05-25 | Flow control switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102182833B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853105A (en) * | 2012-09-18 | 2013-01-02 | 杨彦 | Simple flow control switch |
| CN107504221A (en) * | 2017-10-18 | 2017-12-22 | 合肥市恒昌自动化控制有限责任公司 | A kind of corrosion-resistant three-way control valve of diaphragm type |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2190211Y (en) * | 1994-06-10 | 1995-02-22 | 机械工业部西安重型机械研究所 | Pressure control valve with a membrance |
| JP2002514289A (en) * | 1996-11-20 | 2002-05-14 | パピン ヤーモ | Fluid valve operated by a flow switching device to regulate a small control flow |
| CN101245860A (en) * | 2008-01-17 | 2008-08-20 | 邓永林 | Thermal expansion valve with safety structure |
| WO2009111101A1 (en) * | 2008-02-29 | 2009-09-11 | Fisher Controls International Llc | Diagnostic method for detecting control valve component failure |
| CN201462152U (en) * | 2008-12-10 | 2010-05-12 | 张承华 | Multi-source control valve |
| CN202065537U (en) * | 2011-05-25 | 2011-12-07 | 杨彦 | Flow control switch |
-
2011
- 2011-05-25 CN CN 201110135989 patent/CN102182833B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190211Y (en) * | 1994-06-10 | 1995-02-22 | 机械工业部西安重型机械研究所 | Pressure control valve with a membrance |
| JP2002514289A (en) * | 1996-11-20 | 2002-05-14 | パピン ヤーモ | Fluid valve operated by a flow switching device to regulate a small control flow |
| CN101245860A (en) * | 2008-01-17 | 2008-08-20 | 邓永林 | Thermal expansion valve with safety structure |
| WO2009111101A1 (en) * | 2008-02-29 | 2009-09-11 | Fisher Controls International Llc | Diagnostic method for detecting control valve component failure |
| CN201462152U (en) * | 2008-12-10 | 2010-05-12 | 张承华 | Multi-source control valve |
| CN202065537U (en) * | 2011-05-25 | 2011-12-07 | 杨彦 | Flow control switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853105A (en) * | 2012-09-18 | 2013-01-02 | 杨彦 | Simple flow control switch |
| CN107504221A (en) * | 2017-10-18 | 2017-12-22 | 合肥市恒昌自动化控制有限责任公司 | A kind of corrosion-resistant three-way control valve of diaphragm type |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102182833B (en) | 2013-03-13 |
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Granted publication date: 20130313 Termination date: 20130525 |