WO2001020206A1 - Remplissage par robinet d'arret - Google Patents

Remplissage par robinet d'arret Download PDF

Info

Publication number
WO2001020206A1
WO2001020206A1 PCT/AU2000/001129 AU0001129W WO0120206A1 WO 2001020206 A1 WO2001020206 A1 WO 2001020206A1 AU 0001129 W AU0001129 W AU 0001129W WO 0120206 A1 WO0120206 A1 WO 0120206A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
diaphragm
liquid
pilot
bleed
Prior art date
Application number
PCT/AU2000/001129
Other languages
English (en)
Inventor
Peter Henry Brougham
Original Assignee
Mastavalve Pty Ltd
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 Mastavalve Pty Ltd filed Critical Mastavalve Pty Ltd
Priority to AU76308/00A priority Critical patent/AU7630800A/en
Publication of WO2001020206A1 publication Critical patent/WO2001020206A1/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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/34—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float acting on pilot valve controlling the cut-off apparatus

Definitions

  • This invention relates to a filling stop valve, particularly to the automatic cut off of flow of liquid when the liquid reaches a desired level.
  • Float valves are well known to cut off the flow of liquid when a desired level of the liquid has been reached in a container.
  • the simplest form of such a valve comprises a float on an end of an arm pivoted to the body of the valve, the other end of the arm pressing on a valve member to close an aperture in an inlet pipe.
  • the float arm is of a length such that the required pressure can be applied to the valve to close against the inlet liquid pressure.
  • servo valves In order to obtain further control of the liquid flow and obtain the desired cut off of the flow, servo valves are known, in which a pilot valve controls the operation of a master valve by the application of liquid pressure to assist in the operation of the master valve.
  • the use of a servo valve thus eliminates or reduces the length of the float arm, the servo valve incorporating a diaphragm as the master valve or connected to the master valve.
  • a diaphragm valve is given in AU 659356 in which a sensing or pilot diaphragm has attached thereto a ring magnet. A further magnet is attached to a plunger which is adapted to open and close an aperture in the diaphragm of the master valve.
  • PCT application number 98/37348 there is described a fluid control valve to terminate the flow under the control of a float subject to the level of liquid subject to the inflow of liquid.
  • the specification describes a diaphragm master fluid flow control valve to control and interrupt the
  • SUBSTITUTE SHEET (Rule 26) flow of liquid, the diaphragm master control being controlled by a diaphragm pilot valve under the influence of a float sensitive to the level of liquid being measured.
  • a further object of the invention is to provide a stop valve which is less liable to malfunction due to pollutants in the liquid.
  • a still further object of the invention is to provide a stop valve having means to reduce or eliminate liquid surge and water hammer in the liquid supply line.
  • a stop valve to terminate the flow of liquid on the liquid reaching a certain level
  • said stop valve comprising a diaphragm master valve to control the flow of liquid, said master valve being controlled by a diaphragm pilot valve controlled by a float or other liquid level sensing device in contact with the liquid, said pilot valve having a central sealing portion and a surrounding portion having spaced segments thus ensuring the central sealing portion concentrically seals.
  • the spaced segments are radially extending arms.
  • Figure 1 illustrates an embodiment wherein the diaphragm pilot valve controls a diaphragm master valve
  • Figures 2a, 2b, 2c & 2d respectively assembly illustrate the pilot valve, the push rod, and the diaphragm configuration
  • Figure 3 illustrates a further embodiment arranged as a cistern valve.
  • Figs 1 and 2 are intended for more accurate control of a master valve by means of a small pilot valve.
  • Fig 2a illustrates a pilot valve 10 which has a valve body 11 , the body having an upstanding circular flange 12 which contains a retaining pin 13 extending through an aperture 14 in an abutment member 15.
  • the abutment member 15 contains an axially orientated aperture 16 which houses the upper end of a push rod 17, the push rod bearing on the central closure zone 18 of the pilot valve diaphragm 19.
  • the edges of diaphragm 19 are clamped against face 20 via a retaining block 21 , retaining block 21 being sealed by an O-ring 22 to the valve body 11.
  • the retaining block 21 also locates the outer annulus 23 of the diaphragm against the face 20 of the body 11.
  • Retaining block 21 contains recesses 24 to provide air pockets or cavities which can act as shock absorbers to slow valve action, reducing the possibility of water hammer.
  • the pockets or cavities thus contain air or other compressible material, whereby the air or compressible material act to cushion the liquid thus reducing or eliminating water hammer and surging of the liquid.
  • the push rod 17 passes through bleed aperture 26 in the face 20 of the body 11.
  • the diameter of the bleed aperture 26 is preferably small whereby small forces are used to deflect the closure zone 18 away from its valve seat 25 at the end of the aperture 26, and to inhibit development of leaks particularly as the valve closes.
  • the configuration is such that the closure zone is deflected against the resilience of the material of which the diaphragm is made thereby providing a small degree of preloading upwardly as shown in Fig 2a with the diaphragm against its seat 25.
  • the diaphragm 19 has 6 legs 28 extending away from the closure zone 18 separated by spaces 29 so that the loading will be concentric, and is unlikely to be eccentric, reducing thereby the likelihood of leakage.
  • abutment member 31 containing an aperture 14 having a diameter greater than the diameter of retaining pin 13 so that there is a limitation of the axial movement of push rod 17.
  • the outer surface of the abutment member is not circular, and in this embodiment comprises a plurality of flat surfaces 33 which reduce the likelihood of debris build up interfering with the free functioning of the valve.
  • the abutment member is hexagonal in cross section.
  • Fig 1 illustrates the arrangement wherein use is made of a lever arm 36 pivoted at 36a to the pilot valve 10 which will multiply the force imparted by the ballasted float 37, thereby making it possible to use a relatively small ballasted float.
  • the amount of movement required to sufficiently deflect the closure zone 18 of the diaphragm 19 is not great.
  • the master valve 38 is illustrated as a large flow- through valve, closure of which is effected in this embodiment by a master diaphragm 39.
  • An outer casing 37a protects the float and surrounding mechanism, the casing having two orifices 37b to permit the entry of liquid and an orifice 37c which is open to atmosphere.
  • the two orifices 37b are provided to regulate the entry of the liquid, into the casing, thus preventing surges in the liquid from effecting the operation of the float.
  • the float 37 is carried on a bush 41 which adds the ballast to the float, which slides over a stem 42, the stem 42 having spaced upstanding end stops 43 at its distal end.
  • the stem 42 (or alternately the hole in the bush through which the stem 42 passes) is non-circular and preferably multi-faceted so as to provide facility of flushing of debris which may collect due to polluted water.
  • the lever arm 36 pivots on a collar 44 which is rotatable with respect to the bush 41 , and the bush 41 is rotatable and slidable with respect to stem 42 so that danger of malfunction due to eccentric loading is substantially avoided.
  • the arrows indicate the direction of flow through the valve 38 with the diaphragm seating on the valve seat 70, the valve being biased to the closed position by the spring 71.
  • the diaphragm has a bleed aperture 72 opening to chamber 73 in the housing of valve 38, and which is connected by further bleed aperture 74 to chamber 75 in the pilot valve 10.
  • FIG 3 illustrates an embodiment where a high degree of flexibility is achieved by having a pair of floats 46 and 47 carried on a stem 48 (representing the ballast mass) and spaced vertically from one another within a cistern valve casing 49.
  • the pilot valve 50 is co-axial with the master diaphragm 52, and a light spring 53 between the master diaphragm and spacer 57 supplements the pressure bias across the master diaphragm.
  • the outlet tube 54 extends upwardly within a deflector tube 55, and the upper end of the deflector tube contains an aperture 55a which inhibits the development of the siphon action.
  • a buoyant closure member 56 retained loosely on pin 60 can close the aperture so as to reduce introduction of air into the flushing water, which in turn will reduce noise.
  • the retaining pin 58 is contained in large diameter aperture 59 in the lower end of the stem 48 and functions in the same way as illustrated in Fig 2a.
  • a valve functioned satisfactorily when a force of 1.7 Newtons was applied to the push rod to deflect the closure zone of the pilot valve and the push rod was moved by a distance of only one millimetre.
  • a valve which will reliably function with a relatively small movement of the push rod which bears against the closure zone of the pilot valve, and a corresponding smaller force is required to be exerted thereon so that a relatively small float assembly may be used to actuate the pilot valve diaphragm resulting in a improved control over the water level, which may be in a cistern for example.
  • the diaphragm of the pilot valve is provided with a plurality of equally spaced legs 28 extending from the central closure zone 18 so that the possibility of the diaphragm failing to seal due to imbalanced forces is substantially reduced. This may otherwise occur, for example if the water contains particulate material. While the diaphragm 19 is shown with 6 legs, it is to be realised that a diaphragm with equally spaced legs, either 3, 4, 5, 6, 7, 8 can be provided, thus providing equally spaced spaces 29. These spaces permit the flow of liquid, and any contaminants carried thereby, to pass freely through the diaphragm, which is an added advantage over a single bleed aperture in the diaphragm.
  • the push rod member is multi-faceted on its outer surface and free to rotate.
  • the aperture through which the retaining pin passes is of larger diameter than the diameter of the pin, so that while the push rod can move, its movement in both directions is limited. This then limits the amount of deflection which can be imparted to the closure zone of the diaphragm of the pilot valve.
  • Another problem which it is conceived could develop is the build up of debris from very poor quality water, such as underground water, between the sliding surfaces of the bush which carries the float and the depending stem, and to avoid large surface contact areas, either the internal surface of the bush or the extemal surface of the stem can be multi-faceted to give only line contact, not full area contact. Still further debris which does collect needs to be discharged as soon as possible, and in an embodiment of the invention as described above, the lower end of the stem can be provided with outstanding abutments ensuring that there is a flushing space between the lower end of the bush and the lower end of the stem on which it slides.

Abstract

L'invention porte sur un robinet d'arrêt permettant de stopper le flux d'un liquide lors de l'actionnement d'un dispositif de détection du niveau des liquides. Le robinet est constitué d'un robinet principal à membrane commandé par un clapet pilote à membrane actionné par le dispositif de détection. Le clapet pilote à membrane possède sur son siège une partie d'étanchéité, ainsi qu'une pluralité de bras radiaux s'étendant de la partie d'étanchéité de façon à assurer que la partie d'étanchéité forme un joint d'étanchéité central sur le siège.
PCT/AU2000/001129 1999-09-16 2000-09-18 Remplissage par robinet d'arret WO2001020206A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU76308/00A AU7630800A (en) 1999-09-16 2000-09-18 Filling stop valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPQ2855A AUPQ285599A0 (en) 1999-09-16 1999-09-16 Filling stop valve
AUPQ2855 1999-09-16

Publications (1)

Publication Number Publication Date
WO2001020206A1 true WO2001020206A1 (fr) 2001-03-22

Family

ID=3817022

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2000/001129 WO2001020206A1 (fr) 1999-09-16 2000-09-18 Remplissage par robinet d'arret

Country Status (2)

Country Link
AU (1) AUPQ285599A0 (fr)
WO (1) WO2001020206A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1626215A1 (fr) * 2004-08-10 2006-02-15 A. u. K. Müller GmbH & Co. KG Servovanne commandée par flotteur
WO2014085850A1 (fr) * 2012-12-04 2014-06-12 Super Star Toilet System Pty Ltd Mécanisme de régulation de débit de fluide conçu pour maintenir un niveau de fluide dans une zone de confinement

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196753A (en) * 1977-06-30 1980-04-08 Arcu Armaturindustri Ab Flow regulator
US4566484A (en) * 1984-12-28 1986-01-28 William R. Walters Liquid level control apparatus
EP0324519A2 (fr) * 1988-01-06 1989-07-19 Klerk's Plastic Industrie B.V. Corps gonflable comprenant une soupape et emballage comportant un tel corps
US4945944A (en) * 1989-06-28 1990-08-07 Chen Shu Yuan Fill valve for toliet tanks
EP0420353A2 (fr) * 1989-09-29 1991-04-03 Klerk's Plastic Industrie B.V. Soupape, un corps gonflable avec une telle soupape, et un emballage
AU2849295A (en) * 1993-02-17 1995-10-12 Nu-Valve Pty Limited Improvements in inlet flow valves
WO1998037348A1 (fr) * 1997-02-21 1998-08-27 Mastavalve Pty. Ltd. Soupape d'arret de remplissage

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196753A (en) * 1977-06-30 1980-04-08 Arcu Armaturindustri Ab Flow regulator
US4566484A (en) * 1984-12-28 1986-01-28 William R. Walters Liquid level control apparatus
EP0324519A2 (fr) * 1988-01-06 1989-07-19 Klerk's Plastic Industrie B.V. Corps gonflable comprenant une soupape et emballage comportant un tel corps
US4945944A (en) * 1989-06-28 1990-08-07 Chen Shu Yuan Fill valve for toliet tanks
EP0420353A2 (fr) * 1989-09-29 1991-04-03 Klerk's Plastic Industrie B.V. Soupape, un corps gonflable avec une telle soupape, et un emballage
AU2849295A (en) * 1993-02-17 1995-10-12 Nu-Valve Pty Limited Improvements in inlet flow valves
WO1998037348A1 (fr) * 1997-02-21 1998-08-27 Mastavalve Pty. Ltd. Soupape d'arret de remplissage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1626215A1 (fr) * 2004-08-10 2006-02-15 A. u. K. Müller GmbH & Co. KG Servovanne commandée par flotteur
WO2014085850A1 (fr) * 2012-12-04 2014-06-12 Super Star Toilet System Pty Ltd Mécanisme de régulation de débit de fluide conçu pour maintenir un niveau de fluide dans une zone de confinement
CN104968982A (zh) * 2012-12-04 2015-10-07 超星盥洗系统私人有限公司 一种适配来维持容积区域内流体液位的流体流动控制装置
CN104968982B (zh) * 2012-12-04 2018-02-02 超星盥洗系统私人有限公司 一种适配来维持容积区域内流体液位的流体流动控制装置

Also Published As

Publication number Publication date
AUPQ285599A0 (en) 1999-10-07

Similar Documents

Publication Publication Date Title
CA2282024C (fr) Soupape d'arret de remplissage
US7614420B2 (en) Autofeed mechanism for heated humidifier chamber
US3618629A (en) Ballcock valve
US4779640A (en) Automatic drain valve
CA2187601C (fr) Robinet-purgeur a pilote
WO2000058651A1 (fr) Soupape de decharge mecanique commandee par disque de rupture
JP2002097903A (ja) 蒸気弁
CA1255853A (fr) Ensemble hydrostatique a flotteur et clapet
WO2001020206A1 (fr) Remplissage par robinet d'arret
AU2016101522A4 (en) Vent Valve
AU726104B2 (en) Filling stop valve
GB2149148A (en) Servo operated liquid level control valve
CN2379666Y (zh) 定水位阀
KR20010013329A (fr) Actionneur a soupape pour commutateur de pression d'un systeme hydraulique
KR200207682Y1 (ko) 온,오프식 고저수위 제어용 정수위 밸브
CN110332337B (zh) 一种先导式旁路无泄漏自控回流阀
KR200269060Y1 (ko) 유체압력차에 의하여 고, 저수위가 제어되는 정수위밸브
WO2001020205A1 (fr) Soupape regulatrice de debit liquide
EP0477324B1 (fr) Valve de purge automatique
EP0411755A1 (fr) Valve électromagnétique pour fluide actionné hydrauliquement
US321885A (en) Valve
JPH049497Y2 (fr)
US1016050A (en) Valve.
US1091945A (en) Valve-controller.
US431162A (en) Automatic damper for steam-boilers

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP