WO2011036184A2 - Ensemble vanne de dérivation de lait - Google Patents

Ensemble vanne de dérivation de lait Download PDF

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Publication number
WO2011036184A2
WO2011036184A2 PCT/EP2010/063991 EP2010063991W WO2011036184A2 WO 2011036184 A2 WO2011036184 A2 WO 2011036184A2 EP 2010063991 W EP2010063991 W EP 2010063991W WO 2011036184 A2 WO2011036184 A2 WO 2011036184A2
Authority
WO
WIPO (PCT)
Prior art keywords
milk
valve assembly
diverting valve
diaphragm
chamber
Prior art date
Application number
PCT/EP2010/063991
Other languages
English (en)
Other versions
WO2011036184A3 (fr
Inventor
Alan Pearson
David Pearson
Lloyd Pearson
Original Assignee
Alan Pearson
David Pearson
Lloyd Pearson
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alan Pearson, David Pearson, Lloyd Pearson filed Critical Alan Pearson
Publication of WO2011036184A2 publication Critical patent/WO2011036184A2/fr
Publication of WO2011036184A3 publication Critical patent/WO2011036184A3/fr

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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
    • F16K11/207—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with two handles or actuating mechanisms at opposite sides of the housing
    • 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
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • F16K31/1268—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like with a plurality of the diaphragms

Definitions

  • the present invention relates to a milk diverting valve assembly.
  • milk diverting valve assembly comprising a milk inlet in fluid communication with a milk inflow chamber; a first milk outlet in fluid communication with a first milk outflow chamber; a second milk outlet in fluid communication with a second milk outflow chamber; a first valve to control fluid flow between the milk inflow chamber and the first milk outflow chamber; and a second valve to control fluid flow between the milk inflow chamber and the second milk outflow chamber.
  • Such diverting valve assemblies are known for use in milking parlours.
  • milking parlours the milking system collects milk from many cows and that milk is stored centrally in a bulk tank for subsequent further processing into dairy products for human consumption. It is therefore very important that only safe, healthy milk reaches the bulk tank and that milk that is not suitable for human consumption is directed elsewhere. Milk may be deemed unsuitable for a variety of reasons.
  • a first example of a source of contaminated milk would be from a cow suffering from mastitis; a second example would be milk from a cow recently treated for infection using antibiotics.
  • Other examples of contaminated milk, such as bloody milk are also known.
  • Milking systems for milking parlours comprise a plurality of teatcups that are attachable to a cow's teats and have suitable connections thereto to apply a pulsed vacuum to the teatcup and so extract the milk from the teat.
  • the milk inflow chamber of a milk diverting valve assembly will be subject to a vacuum.
  • This vacuum can adversely affect the operation of the valves controlling fluid flow between the milk inflow chamber and the milk outflow chambers.
  • valves can end up in positions where they are neither fully open nor fully closed, giving rise to inaccurately diverted milk, and the potential for contaminated milk reaching the bulk tank.
  • a milk diverting valve assembly comprising a milk inlet in fluid communication with a milk inflow chamber; a first milk outlet in fluid communication with a first milk outflow chamber; and a second milk outlet in fluid communication with a second milk outflow chamber characterised in that the milk diverting valve assembly further comprises a first valve to control fluid flow between the milk inflow chamber and the first milk outflow chamber; and a second valve to control fluid flow between the milk inflow chamber and the second milk outflow chamber, wherein at least one of the valves each comprise a double diaphragm valve having an actuator diaphragm connected to a flow-control diaphragm, the actuator diaphragm having a larger area than the flow-control diaphragm.
  • the double diaphragm valve provides very effective, efficient and accurate operation of the milk diverting valve assembly.
  • the use of the actuator diaphragm having a larger area than the flow-control diaphragm allows a larger force to be applied indirectly to the fluid-flow diaphragm, through the actuator diaphragm. This allows for greater control of the diaphragm, so that the double diaphragm valve can be fully closed or fully opened as required.
  • a milk diverting valve assembly further comprising a cap covering each actuator diaphragm, the caps being adapted to be connected to an actuating apparatus.
  • actuating apparatus comprises a vacuum source. This is a particularly convenient manner of providing a force suitable for actuating the double-diaphragm valve.
  • a milk diverting valve assembly in which the actuator diaphragm is concentric with the flow-control diaphragm. This is a particularly convenient and efficient construction of the double diaphragm valve.
  • a milk diverting valve assembly in which the actuator diaphragm is connected to the flow-control diaphragm along their central axis. This is a particularly convenient and efficient construction of the double diaphragm valve.
  • a milk diverting valve assembly further comprising a water inlet. In this way, water may be flushed through the milk diverting valve assembly so as to wash out any contaminated milk prior to using the milk diverting valve assembly with good milk.
  • the water inlet will be adapted to deal with pressurised water for more effective cleaning.
  • a milk diverting valve assembly in which the water inlet is in fluid communication with the milk inflow chamber.
  • the milk inflow chamber and those parts in fluid communication therewith such as the milk inlet, milk pipeline and the milking attachments for the cows, can be washed out by the water supplied to the water inlet.
  • a milk diverting valve assembly further comprising an air inlet.
  • air may be supplied to the milk diverting valve assembly to dry it out after milking, or after the milk diverting valve assembly has been washed.
  • the air inlet is adapted to receive compressed air, which will dry the assembly and connected pieces more efficiently.
  • a milk diverting valve assembly in which the air inlet is in fluid communication with the milk inflow chamber. In this way, the milk inflow chamber and those parts in fluid communication therewith, such as the milk inlet, milk pipeline and the milking attachments for the cows, can be reached by the air and so dried.
  • a milk diverting valve assembly in which the milk inlet is connected to a milk meter. In this way, milk from the cow passes through the milk meter before being directed to its destination by the milk diverting valve assembly. This allows the total milk production of the cow to be measured, and not just the level of production of good milk.
  • a milk diverting valve assembly further comprising a drain outlet.
  • the drain outlet is fitted with a valve that is opened when it is desired to drain out any remaining washing water from the milk diverting valve assembly.
  • the drain outlet is particularly useful when the milk diverting valve assembly is connected to a milk meter at the milk inlet of the milk diverting valve assembly, as this allows the milk meter to be washed and successfully drained via the milk diverting valve assembly. There is no need for the milk meter to be disconnected from the milk diverting valve assembly.
  • the drain outlet allows the washing water to be drained from the milk diverting valve assembly without operating the double diaphragm valves to open a fluid path.
  • a milk diverting valve assembly in which the milk inflow chamber comprises a milk detecting apparatus. In this way the presence of milk within the milk inflow chamber can be monitored and provide information as to the when the cow has been milk successfully.
  • a milk diverting valve assembly in which the milk detecting apparatus is connected to an automatic cluster removal system. In this way, the lack of milk in the milk inflow chamber, indicating that the cow has finished milking, can be used to trigger the release of the cluster of teatcups from the cow's udder.
  • a milk diverting valve assembly in which the milk diverting valve assembly is connected to a control unit. In this way, the operation of the milk diverting valve assembly can be controlled as necessary by the milk parlour operator.
  • a cattle milking system comprising the milk diverting valve assembly as claimed in any preceding claim.
  • Such a cattle milking system would allow for the efficient and accurate separation of contaminated milk from good milk.
  • Fig. 1 is an exploded perspective view of a milk diverting valve assembly according to the invention
  • Fig. 2(a) is perspective view of the milk diverting valve assembly shown in Fig. 1 ;
  • Fig. 2(b) is a section view of the milk diverting valve assembly shown in Fig. 1 , the section taken along a vertical plane bisecting the milk diverting valve;
  • Figs. 3(a), (b) and (c) are perspective, side and section (along the line A-A in Fig. 3(b)) views of the double diaphragm valve used in the milk diverting valve assembly of the invention;
  • Figs. 4(a), (b) and (c) are perspective, top and section (along the line B-B in Fig.
  • FIG. 5 is an exploded perspective view of an alternative embodiment of milk diverting valve assembly according to the invention.
  • Figs. 6(a) and (b) are perspective and top views respectively of the milk diverting valve assembly shown in Fig. 5;
  • Figs. 7(a) and (b) are section (along the line C-C in Fig. 7(b)) and top views respectively of the milk diverting valve assembly shown in Fig. 5;
  • Fig. 8 is an exploded perspective view of the milk diverting valve assembly shown in Fig. 5 in combination with a milk meter assembly;
  • Figs. 9(a) and (b) are front and rear perspective views of the milk diverting valve assembly shown in Fig. 5 in combination with a milk meter assembly;
  • Figs. 10(a) and (b) are front and section (along the line D-D in Fig. 10(a)) views of a further embodiment of milk diverting valve assembly according to the invention in combination with the milk meter assembly;
  • Figs. 1 1 (a) and (b) are side and section (along the line E-E in Fig. 1 1 (a)) views of the milk diverting valve assembly and milk meter assembly shown in Fig 10.
  • Fig. 12 is a diagrammatic representation of the diverting valve assembly shown in Fig. 1 , where the valve is closed;
  • Fig. 13 is a diagrammatic representation of the diverting valve assembly shown in Fig. 1 , where the valve is open.
  • milk diverting valve assembly indicated generally by the reference numeral 100, comprising a central unit 102 formed by a substantially cylindrical outer body 104, each end of which is fitted with a collar 106 which tapers outwardly therefrom. Each collar 106 terminates in a non-tapering cylindrical section 108.
  • a milk inflow chamber 1 10, comprising a substantially cylindrical body is mounted within the outer body 104, and located substantially co-axially therewith.
  • the outer body 104 is the same length at the milk inflow chamber 1 10 such that each end of the outer body 104 is in line with an end of the milk inflow chamber 1 10.
  • a milk inlet 1 12 is connected to the milk inflow chamber 1 10 and is in fluid communication therewith, such that the combination of the milk inflow chamber 1 10 and milk inlet 1 12 form a T-shaped unit.
  • the space between the milk inflow chamber 110 and the outer body 104 forms the milk outflow chambers, the first milk outflow chamber 113a and the second milk outflow chamber 1 13b to which a first milk outlet 1 14 and a second milk outlet 1 15 are connected and with which they are fluid communication.
  • the first milk outflow chamber 1 13a is not in fluid communication with the second milk outflow chamber 1 13b as they are divided by the milk inlet 1 12 and other structural elements of the main body 104.
  • the central body further comprises a water inlet 1 17 and an air inlet 1 18.
  • a pair of probes 1 19, forming a milk detecting apparatus, are located in the main body 104, extending into the milk inflow chamber 1 10.
  • the probes 1 19 are connected to a control and communication wiring loom 121.
  • the milk diverting valve assembly 100 comprises a pair of diaphragm washers 120, each comprising a frusto-conical ring.
  • the diaphragm washers 120 are adapted to engage the sides of a double diaphragm valve 122 and secure an air-tight and liquid-tight seal around the sides of the double diaphragm valve 122.
  • the double diaphragm valve 122 comprises a substantially circular flow-control diaphragm 124 connected to a concentric, substantially circular actuator diaphragm 126.
  • the flow- control diaphragm 124 is smaller in diameter than the actuator diaphragm 126.
  • the flow- control diaphragm 124 and actuator diaphragm 126 have a connecting portion 127 therebetween.
  • the milk diverting valve assembly 100 further comprises a pair of caps 128 to fit over the double diaphragm valve 122.
  • Each cap 128 comprises a nozzle 130 for connection to a vacuum source.
  • the double diaphragm valve 122 comprising flow-control diaphragm 124 and actuator diaphragm 126 connected together by the connecting portion 127.
  • Each diaphragm 124, 126 comprises a diaphragm face 140, located centrally within the diaphragm, the diaphragm face of the flow-control diaphragm 124 being smaller than that of the actuator diaphragm 126.
  • the connecting portion 127 extends between the diaphragm faces 140 of both diaphragms and consequently tapers inwardly from the actuator diaphragm 126 to the flow-control diaphragm 124.
  • the connecting portion 127 is therefore substantially frusto-conical in shape with its larger non-curved side forming the diaphragm face 140 for the actuator diaphragm 126, and its smaller non-curved side forming the diaphragm face 140 of the flow-control diaphragm 124.
  • Each diaphragm face 140 is surrounded by a border 142 and is connected thereto by a flexible membrane 144.
  • the flexible membrane 144 While the double diaphragm 122 is not actuated, the flexible membrane 144 will form a channel between the diaphragm face 140 and the border 142. However when the double diaphragm 122 is actuated, the diaphragm faces 140 will move to the left (relative to the orientation shown in Figs. 3(b) and (c)) and the border 142 will not move, such that the flexible membranes will no longer form a channel, but will extend directly between the edge of the diaphragm faces and the edge of the border 142.
  • the cap 128 which fits over the ends of the milk diverting valve assembly 100.
  • the cap 128 is substantially circular and has a centrally located nozzle 130.
  • the cap 128 comprises an outer lip 132 that, in use, sits outside the cylindrical portion 108 of the collar 106 at the end of the outer body 104 of the milk diverting valve assembly 100.
  • the cap 128 further comprises an inner lip 134 that, in use, sits against the border 142 of the actuator diaphragm 126 in the double diaphragm 122.
  • the cap 128 forms an air-tight seal around the collar 106 and diaphragm 122.
  • FIG. 200 there is shown an alternative embodiment of the milk diverting valve assembly according to the invention, indicated generally by the reference numeral 200.
  • This embodiment 200 is adapted to be connected to a milk meter unit (not shown).
  • the milk diverting valve assembly 200 comprises a central unit 202 formed by a substantially cylindrical outer body 204, wherein the milk inlet 212 is located at the top of the body 204. Adjacent the milk inlet 212, a bracket 208 is fitted to allow connection of the milk meter (not shown).
  • the bracket 208 comprising two discrete portions 208a, 208b disposed around the milk inlet 212, forms the female side of a bayonet mounting for engagement with the milk meter (not shown).
  • Figs. 12 and 13 in which like parts have been given the same reference numerals as before and direction of fluid flow is shown by the heavy arrows, there is shown a diagrammatic representation of the milk diverting valve assembly 100 of the invention.
  • both double diaphragm valves 122 are closed such that the flow-control diaphragm 124 seats at the ends of the milk inflow chamber 1 10 and outer body 104 such that the milk inflow chamber 1 10 and milk outflow chambers 1 13 are closed off.
  • milk will not flow through the milk diverting valve assembly 100.
  • the double diaphragm valve 122 on the left has been opened by the application of a vacuum to the actuator diaphragm 126.
  • a vacuum is applied to the first milk outlet 114 and second milk outlet 1 15. This causes a vacuum to be created in the first milk outflow chamber 1 13a and the second milk outflow chamber 113b.
  • the vacuum in the outflow chambers 1 13a, 1 13b pulls the flow-control diaphragms 124 inwards such that the flow-control diaphragm 124 will be pulled against the ends of the cylinders forming the milk inflow chamber 1 10 and the outer body 104.
  • the flow-control diaphragm 124 will seat in the cylindrical portion 108 of the collar 106 at the end of the outer body 104, thus sealing off the milk inflow chamber 1 10 and preventing any fluid flow from the milk inflow chamber 110.
  • both flow-control diaphragms will be seated in the collars 106 and therefore there will be no fluid flow through the milk diverting valve assembly 100. If a vacuum force is applied to one of the double diaphragm valves 122 through the appropriate nozzle 130, then the vacuum will cause the actuator diaphragm 126 to move towards the cap 128. When the actuator diaphragm 126 moves outwardly, it caused the flow-control diaphragm 124 to also move outwardly, thus unseating itself and opening a path for fluid flow from the milk inflow chamber 1 10 to one of the milk outflow chambers 1 13a, 1 13b. The same vacuum source (not shown) will be used throughout the milking system.
  • each milk outlet 1 14, 115 and that applied to the double diaphragm valves 122 will be derived from the same source, and will therefore be of substantially similar magnitudes.
  • the vacuum force acting on the actuator diaphragm 126 will be larger than that acting on the flow-control diaphragm 124, due to the larger area of the actuator diaphragm 126 that is presented to the vacuum, that that of the flow-control diaphragm that is presented to the vacuum.
  • the double diaphragm 122 valve will operate correctly when a vacuum is applied thereto.
  • the milk detecting apparatus 1 19 forms part of an automatic cluster removal system (not shown), wherein the probes detect the presence of milk within the milk inflow chamber 1 10.
  • a signal is sent along the control and communication wiring loom 121 to trigger release of the cluster of teatcups (not shown) for the cow in question, as the absence of milk in the milk inflow chamber indicates that the cow has been successfully milked.
  • Figs. 8 and 9 in which like parts have been given the same reference numerals as before, there is shown a diverting valve assembly 200 connected to a milk meter 700.
  • the combination of the milk meter 700 with the milk diverting valve assembly 200 in this way allows the milk production of a cow to be accurately recorded, as the total production will be recorded, and not just the good quality milk production.
  • the quantity of milk produced is first measured in the milk meter 700, before the milk is directed either to the bulk tank (not shown) for further processing, or discarded if contaminated.
  • the milk meter 700 comprises meter milk inlet 702 and a meter milk outlet 704, adapted to connected the milk inlet 212 on the top of the milk diverting valve assembly 100.
  • the milk meter 700 further comprises a lower chamber 706, an upper chamber 708 and a valve cylinder 710.
  • the lower chamber comprises the milk outlet 704 and the valve cylinder 710 comprises a base section 71 1 dimensioned to close off the lower chamber 706 from the upper chamber 708 when the valve cylinder 710 is seated at an upper rim 707 of the lower chamber 708.
  • the upper chamber 708 is fitted with three fluid probes, indicated generally by the reference numeral 712, an upper probe, a middle probe and a lower probe, which protrude horizontally into the milk meter 700.
  • the probes 712 are connected to a wiring loom 714 for communication and control.
  • the milk inlet 704 is located in a top chamber 716 which is fitted to the top of the upper chamber.
  • the milk meter 700 further comprises a control valve assembly 718 having a double diaphragm valve 720 of the same design as the double diaphragm valve 122 used in the milk diverting valve assembly 100, 200.
  • the control valve assembly 718 is connected to the valve cylinder 710.
  • the milk meter 700 comprises a lid 722 covering the cap 724 of the control valve assembly 718, and associated controls including a solenoid 728 for operation of the valve and wiring loom 730 for control and communication.
  • a clamp 726 is used to affix the milk meter and diverting valve assembly to a horizontal or vertical bar (not shown). The clamp 726 is located adjacent the probes 712. In use, milk flows in through the milk meter milk inlet 702 into the upper chamber 708. When the three fluid probes 712 detect that the milk has reached a certain height within the upper chamber, the control valve is triggered.
  • control valve 720 This causes a vacuum to be applied to the double diaphragm valve 720 which causes the valve cylinder 710 to lift and allow milk to flow out of upper chamber 708 into the lower chamber 706 and thereby exit the milk meter 700 through the milk meter the milk outlet 704.
  • the control valve will operate at a reasonably high frequency while in use.
  • FIG. 10 and 11 there is shown the milk meter 700 connected to a further embodiment of the milk diverting valve assembly of the invention, indicated generally by the reference numeral 300 connected to a milk meter 700.
  • This embodiment of the milk diverting valve assembly 300 differs from the previous embodiment in that it comprises a drain outlet 302.
  • the drain outlet is used when the diverting valve and meter have been washed using water injected through the water inlet 1 17.
  • the drain outlet is used to drain any remaining water from the milk diverting valve assembly 300 and milk meter 700.
  • the milk meter illustrated herein is an example and other sorts of milk meters may be appropriately connected to the milk diverting valve assembly of the assembly and provide the same advantages as discussed herein.
  • the method of interconnection between the milk diverting valve assembly and milk meter is not limited to a bayonet mount, and the person skilled in the art will aware of a wide range of suitable alternatives.
  • one or more milk diverting valve assemblies of the invention may be incorporated into a cattle milking system to ensure that contaminated milk from the herd is kept separate from the good milk.
  • a control system to control either manually or automatically, the operation of the milk diverting valve assembly, or each of an array thereof, will be apparent to the person skilled in the art.
  • milk outflow chamber has been used to refer to an area from which milk exits the milk diverting valve assembly through a milk outlet. It will be understood by the person skilled in the art, that the term is not limited to a specific chamber but may also refer to a pipe or other conduit used to convey the milk. Furthermore, in certain embodiments, the milk outflow chamber may also be the milk inflow chamber. It will be understood by the person skilled in the art that the term vacuum may refer to a partial vacuum.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dairy Products (AREA)
  • Multiple-Way Valves (AREA)
  • Valve Housings (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

La présente invention se rapporte à un ensemble vanne de dérivation de lait (100, 200, 300) comprenant un orifice d'admission de lait (112, 212) en communication fluidique avec une chambre d'arrivée de lait (110); un premier orifice de sortie de lait (114) en communication fluidique avec une première chambre de sortie de lait (113a); un second orifice de sortie de lait (115) en communication fluidique avec une seconde chambre de sortie de lait (113b); une première vanne pour réguler l'écoulement de fluide entre la chambre d'arrivée de lait (110) et la première chambre de sortie de lait (113a); et une seconde vanne pour réguler l'écoulement de fluide entre la chambre d'arrivée de lait (110) et la seconde chambre de sortie de lait (113b). Au moins une des vannes comprend une vanne à deux diaphragmes (122) comportant un diaphragme d'actionneur (126) relié à un diaphragme de régulation de débit (124), le diaphragme d'actionneur (126) ayant une superficie supérieure à celle du diaphragme de régulation de débit (124). Cela permet la dérivation de lait contaminé loin d'une cuve de stockage de lait en vrac centrale dans un système de traite et empêche ainsi la contamination de tout le lait collecté. L'ensemble vanne de dérivation de lait (100, 200, 300) peut éventuellement être relié à un compteur à lait (700).
PCT/EP2010/063991 2009-09-22 2010-09-22 Ensemble vanne de dérivation de lait WO2011036184A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IES2009/0726 2009-09-22
IE20090726 2009-09-22

Publications (2)

Publication Number Publication Date
WO2011036184A2 true WO2011036184A2 (fr) 2011-03-31
WO2011036184A3 WO2011036184A3 (fr) 2011-05-19

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PCT/EP2010/063991 WO2011036184A2 (fr) 2009-09-22 2010-09-22 Ensemble vanne de dérivation de lait

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IE (2) IE20100607A1 (fr)
WO (1) WO2011036184A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206559A (zh) * 2013-05-06 2013-07-17 广东威博电器有限公司 双阀芯多功能阀体

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Publication number Priority date Publication date Assignee Title
US5002086A (en) * 1990-05-11 1991-03-26 Fluoroware, Inc. Plastic control valve
US5139225A (en) * 1990-11-05 1992-08-18 Micron Technology, Inc. Pneumatically controlled multiple valve system for fluid transfer
US5549134A (en) * 1994-05-27 1996-08-27 Marcvalve Corporation Diaphragm valve
DE29805570U1 (de) * 1998-03-27 1998-07-16 Schuf Chemieventile Vertriebs Mehrwege-Polymerventil

Non-Patent Citations (1)

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Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206559A (zh) * 2013-05-06 2013-07-17 广东威博电器有限公司 双阀芯多功能阀体

Also Published As

Publication number Publication date
IE20100607A1 (en) 2011-12-21
IES20100606A2 (en) 2011-05-11
WO2011036184A3 (fr) 2011-05-19

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