WO2012167287A1 - Réservoir antifuite - Google Patents

Réservoir antifuite Download PDF

Info

Publication number
WO2012167287A1
WO2012167287A1 PCT/ZA2012/000040 ZA2012000040W WO2012167287A1 WO 2012167287 A1 WO2012167287 A1 WO 2012167287A1 ZA 2012000040 W ZA2012000040 W ZA 2012000040W WO 2012167287 A1 WO2012167287 A1 WO 2012167287A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
cistern
actuator
liquid
filling
Prior art date
Application number
PCT/ZA2012/000040
Other languages
English (en)
Inventor
Ernest Ray MITCHLEY
Original Assignee
Mitchley Ernest Ray
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 Mitchley Ernest Ray filed Critical Mitchley Ernest Ray
Publication of WO2012167287A1 publication Critical patent/WO2012167287A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
    • E03D1/30—Valves for high or low level cisterns; Their arrangement ; Flushing mechanisms in the cistern, optionally with provisions for a pre-or a post- flushing and for cutting off the flushing mechanism in case of leakage
    • E03D1/36—Associated working of inlet and outlet valves
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
    • E03D1/02—High-level flushing systems
    • E03D1/18—Cisterns empty when not in action, e.g. with pressure tanks, with swivel-mounted cisterns
    • E03D1/186—Cisterns empty when not in action, e.g. with pressure tanks, with swivel-mounted cisterns with flushing valves

Definitions

  • This invention relates to filling and discharge apparatus for a tank or cistern.
  • Toilet cisterns are particularly prone ⁇ o leakage and overflow and the resultant water wastage constitutes a significant problem both for the homeowner and, more importantly, to the water supply, normally a municipality or some other utility.
  • filling and discharge apparatus for a cistern formed with a liquid inlet and a liquid outlet by means of which liquid in the cistern may be discharged in use
  • the filling apparatus comprising: a liquid inlet valve that is adapted mounting on the cistern inlet and for connection to a liquid source; a liquid outlet valve that is adapted for mounting on the cistern outlet; a valve actuator switchable between a discharged state, in which the valve actuator closes the liquid inlet valve and opens the liquid outlet valve and a pre-discharge state, in which the valve actuator closes the liquid outlet valve and opens the liquid inlet valve; valve actuator retaining means adapted: to retain the valve actuator in the discharged state such that the cistern is normally empty; upon actuation of the valve actuator in use, to retain the valve actuator in the pre-discharge state to allow liquid to enter the cistern by way of the liquid inlet valve and accumulate within the cistern; and when the cistern
  • this invention finds particular application as a filling and discharge apparatus for a toilet cistern, the invention can be applied in a multitude of applications, including reservoirs, tanks and cisterns other toilet cisterns.
  • cistern when used in this specification, must therefore be given its widest possible interpretation to include all such reservoirs, tanks, cisterns or the like, where the context allows.
  • valve actuator contemplated for most of the embodiments described in this specification is a mechanical rod or plunger, but electrical or electronic variations of this invention might be feasible.
  • switchable with reference to the change of state of the valve actuator is intended to include both electrical and mechanical devices.
  • the valve actuator is preferably biased to the discharged state thereof and adapted to require operator intervention to urge the valve actuator to its pre-discharge state
  • the filling and discharge apparatus including an automatic release mechanism adapted to act on the actuator retaining means to release the valve actuator to the discharged state thereof when, after actuation of the valve actuator, the cistern is filled with a predetermined volume of liquid.
  • the automatic release mechanism may conveniently be constituted by a float activated release mechanism that is adapted to release the actuator means from the pre- discharge state thereof when, in use, the float is urged upwardly by the increase in liquid level within the cistern.
  • the valve actuator may be constituted by a plunger, one end of which extends into the cistern, which end includes the closing member of the liquid outlet valve, the plunger being adapted, when in use it is moved to the actuating thereof, to locate the liquid outlet valve closing member on the liquid outlet valve seat to close the liquid outlet valve, the plunger being spring biased to the discharged state thereof and requiring operator intervention to urge the plunger, against the spring bias, to its pre-discharge state.
  • the valve actuator retaining means may be constituted by a catch formed on the plunger to engage a complementally shaped pawl forming part of the float activated release mechanism, the pawl being adapted to disengage from the catch when, in use, the float is urged upwardly by the increase in liquid level within the cistern.
  • the liquid inlet valve is preferably constituted by a diaphragm valve adapted to be acted upon by a pilot valve, the valve actuator being adapted to control the operation of the pilot valve which is adapted to control the operation of the liquid inlet valve.
  • the invention includes a cistern incorporating filling and discharge apparatus according to the invention.
  • the invention also includes a method of filling and discharging a cistern comprising the steps of keeping the cistern in a normally empty state, filling the cistern, when required, with a predetermined quantity of liquid and discharging the cistern automatically when, in use, the cistern is filled with the predetermined volume of liquid.
  • Figure 1 is a diagrammatic sectional elevation on a toilet cistern incorporating an embodiment of the filling and discharge apparatus of the invention, with the cistern in its normally empty state;
  • Figure 2 is a detail on the relevant circled section in Figure 1 ;
  • Figure 3 is a detail on the relevant circled section in Figure 1 ;
  • Figure 4 is a diagrammatic sectional elevation on the cistern of Figure 1 filled with water up to a predetermined level;
  • FIG. 5 is a detail on the relevant circled section in Figure 4.
  • Figure 6 is a detail on the relevant circled section in Figure 4.
  • Figure 7 is a detail section illustrating the disc valve assembly of the cistern of Figure 1 in the condition illustrated in Figure 1 ;
  • Figure 8 is a detail section illustrating the disc valve assembly of the cistern of Figure 1 in the condition illustrated in Figure 4;
  • Figure 9 is a diagrammatic side elevation (part-exploded) of a toilet cistern filling and discharge apparatus according to a preferred form of the invention.
  • Figure 10 is a diagrammatic isometric view of a part of the filling and discharge apparatus of Figure 9;
  • Figure 1 1 is a diagrammatic side elevation of the filling and discharge apparatus of Figure 9, showing parts thereof assembled..
  • valve actuator 10 illustrated in Figure 9 constitutes the preferred actuator for use with the filling and discharge apparatus of the invention and it will be described in more detail below, following a general description of the operation of the cistern and valve actuator with reference to Figures 1 to 9.
  • the examples of the filling and discharge apparatus illustrated in the drawings are intended for mounting within a toilet cistern 1 10.
  • the cistern 1 10 is connected to wafer mains by means of an inlet pipe (not shown) that may be connected directly to an inlet valve 1 14 mounted against the wall of the cistern 1 10.
  • a filler pipe 1 18 is extended from the inlet valve 1 14 to a point low within the cistern 1 10.
  • the filling and discharge apparatus is connected, at the outlet 120 of the cistern 1 10 to a flushing pipe 122 that is coupled to a toilet (not shown) .
  • the filing and discharges apparatus includes a spring loaded valve actuator that actuates both the liquid inlet valve and the liquid outlet valve.
  • this invention seeks to address the problem by retaining the cistern in a normally empty state. This is the state illustrated in Figure 1 - the discharged state referred to above. It will be appreciated that such a normally empty cistern cannot leak, unless of course the filling and discharge apparatus is faulty. Then, when operation of the cistern is required, such as when a toilet flush is required, the valve actuator is actuated to allow the cistern ⁇ o fill with water. This is the state illustrated in Figure 4, in which the valve actuator mechanism is in the pre-discharge state referred to above.
  • the cistern Whilst in this state, the cistern is filled up to a predetermined level. When the water reaches this level, the cistern is automatically discharged (to provide the toilet flush for instance). After discharging, the valve actuator is returned to the discharged state ( Figure 1 ) and the cistern is once again kept empty.
  • the valve actuator includes an actuator linkage lever 104 that acts on a plunger shaft or tube 124 and that is formed, at its one end, with a pivoted push-down lever 126 and, at its other end, with a pivot connection to the plunger 124, the latter terminating in a disc valve 128.
  • the plunger 124 is slidably mounted within an actuator housing 130 that extends upwardly into a tubular valve actuator guide 132 within which the plunger 124 may slide up and down. At its lower end, the valve actuator housing 130 houses the disc valve.
  • the plunger 124 actuates both the disc valve 128 and the inlet valve 1 14 when it is depressed, by way of the lever 104.
  • the plunger 124 includes an actuator finger 136 that is attached to the plunger 124.
  • the finger 136 is adapted to bear against a spring biased rocker 158 between positions in which it closes and opens a rocker operated pilot valve 160.
  • the pilot valve 160 actuates the inlet valve 1 14 which is a pressure assisted diaphragm valve with a pilot valve-actuated opening and closing mechanism housed within a valve actuator housing 142, the latter mounted closely adjacent the point of entry of the inlet pipe into the cistern 1 10.
  • the pilot valve 160 is mounted in such a way that the rocker 158 is located in the path of travel of the actuator finger 136.
  • the cistern 1 10 is normally empty - it is in the discharged state illustrated in Figure 1.
  • the plunger 124 is operated by depressing the lever 126 into the recess 144 formed in the lid of the cistern 1 10 for this purpose.
  • the plunger 124 is provided with an interacting actuator retaining means and an automatic release mechanism constituted by a latching mechanism that retains the plunger 124 in the depressed position and releases it automatically when the cistern has filled up to the required volume.
  • the latching mechanism is illustrated in more detail in Figures 7 and 8.
  • the latching mechanism is constituted by a latching pawl or hook 146 forming part of the float mechanism 140 and a hook formation forming part of a spring guide 133 that is secured to the plunger 124.
  • the latching hook 1 6 rides over the hook formation 148 until it engages the hook formation 148, thereby to latch the guide 133 in position with the disc valve 128 closed, as is illustrated in Figure 8.
  • the inlet valve 1 14 is constituted by a pilot operated diaphragm valve, the diaphragm 162 of which is retained against its valve seat 164 by the pressure differential between water pressure applied to the fully exposed upper surface of the diaphragm 162 and the partially exposed undersurface of the diaphragm 162.
  • the water pressure in the inlet chamber 166 of the diaphragm valve and in the modulating chamber 168 is equalised as a result of controlled leakage through calibrated connecting channels (not shown) formed in the diaphragm 162.
  • the modulating chamber 168 is connected to the pilot valve 160 by means of a pressure tube 170.
  • the latching hook 146 is mounted on a lever arm 150 forming part of the float mechanism 140, the end of the lever arm 150 being provided with a float 152.
  • valve actuator 10 illustrated in Figures 9, 10 and 1 1 constitutes the preferred actuator for use with the filling and discharge apparatus of the invention and it will now be described in more detail, with like features being given like numbers as far as possible.
  • the valve actuator 10 includes attachment clips 12 for an actuator linkage lever or push rod (not shown) that acts on the actuator 10 in a manner similar to the actuator linkage lever 104 of Figures 1 to 8.
  • the push rod clips 12 are integral with an actuator yoke 16 that is slidably mounted on a plunger shaft or tube 24 that terminates, at its base, in a disc valve 28.
  • the plunger 24 is slidably mounted within an actuator housing 30 that extends from a circular base 29 upwardly into a tubular valve actuator guide tube 32 within which the plunger tube 24 may slide up and down relatively to the housing 30.
  • the plunger tube 24 is formed with integral studs 34 that are trapped for limited sliding movement relatively ⁇ o the housing 30 by means of elongated slots 31 .
  • the valve actuator housing base 29 is formed with bayonet-type securement slots 27 (see Figure 10 in particular) that are adapted to engage the free ends of a series of upstanding legs 25 forming part of the screw threaded outlet pipe 23 that is adapted for securement to the outlet hole of the cistern (not shown in Figures 9, 10 and 1 1 ) .
  • the legs 27 and base 29 together define an outlet valve cage within which the disc valve 28 is retained in use, the disc valve 28 being adapted to close against a valve seat 21 (not visible but indicated generally) formed in the base of the cage so defined.
  • the actuator yoke 16 includes an actuator finger 36 that is integral with the yoke 16.
  • the finger 36 is adapted to bear against a spring biased rocker 58 for a pilot valve (not shown), the rocker 58 and valve being housed within a pilot valve housing 61 that is formed on a pedestal 63 extending from the upper end of the guide tube 32.
  • the actuator yoke 16 and the finger 36 are reciprocable between positions in which the finger 36 closes and opens a rocker operated pilot valve in the housing 61 - the valve operates on the same basis as the pilot valve 160 described with reference to to Figures 1 to 8.
  • the yoke 16 is provided with an interacting actuator retaining means and an automatic release mechanism constituted by a latching mechanism that retains the yoke 16 in the depressed position and releases it automatically when the cistern has filled up to the required volume.
  • the latching position the retained position of the yoke 16 or the pre-discharge state of the valve actuator 10.
  • the latching mechanism is constituted by a latching pawl or hook 46 forming part of the float mechanism 40 and a hook formation 48 formed in a spring guide 33 integral with the yoke 16.
  • the latching hook 46 rides over the hook formation 48 until it engages the hook formation 148, thereby to latch the guide 33 in position with the disc valve 28 closed.
  • valve actuator 10 When the yoke 16 is moved downwardly in use, to actuate the valve actuator 10, the studs 34 slide in the slots 31 until they are engaged by the yoke and urge the plunger 24, thereby ⁇ o seat the valve 28 on the valve seat 21.
  • the valve 28 is flexible and fends ⁇ o lift back off the seat, but when the co-operating latching hooks 46, 48 are properly engaged and the operating pressure on the yoke 16 is released, the compression spring 35 biases the plunger 24 to the closing position of the valve 28 on the valve seat 21 .
  • the cistern fills with water as described above.
  • the latching hook 46 is mounted on a lever arm 50 forming part of the float mechanism 40, the end of the lever arm 50 being provided with a float 52.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Abstract

L'invention porte sur un appareil d'alimentation et d'évacuation de réservoir qui comprend un clapet d'alimentation en liquide apte à être monté à l'entrée du réservoir, un clapet d'évacuation de liquide (29) apte à être monté à la sortie du réservoir, et un actionneur (10) de clapet chargé par ressort qui commande les clapets d'alimentation et d'évacuation. L'actionneur (10) maintient le réservoir dans un état normalement vide. Lorsque l'actionneur de clapet (10) est commandé, il se déplace dans un état de pré-évacuation afin de laisser le liquide remplir le réservoir. Une fois le réservoir rempli avec un volume de liquide prédéterminé, l'actionneur (10) est commuté sur un « état d'évacuation » afin de permettre l'évacuation du liquide contenu dans le réservoir. L'actionneur (10) comprend des moyens qui sollicitent le clapet d'évacuation (29) dans sa position fermée lorsque l'actionneur se trouve à l'état de pré-évacuation.
PCT/ZA2012/000040 2011-05-30 2012-05-30 Réservoir antifuite WO2012167287A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2011/03955 2011-05-30
ZA201103955 2011-05-30

Publications (1)

Publication Number Publication Date
WO2012167287A1 true WO2012167287A1 (fr) 2012-12-06

Family

ID=47259976

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2012/000040 WO2012167287A1 (fr) 2011-05-30 2012-05-30 Réservoir antifuite

Country Status (1)

Country Link
WO (1) WO2012167287A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022226836A1 (fr) * 2021-04-28 2022-11-03 厦门立业卫浴工业有限公司 Vanne d'admission d'eau fixée sur vanne de drainage

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005014943A1 (fr) * 2003-08-08 2005-02-17 Ernest Ray Mitchley Appareil de remplissage et de decharge pour reservoir

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005014943A1 (fr) * 2003-08-08 2005-02-17 Ernest Ray Mitchley Appareil de remplissage et de decharge pour reservoir

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022226836A1 (fr) * 2021-04-28 2022-11-03 厦门立业卫浴工业有限公司 Vanne d'admission d'eau fixée sur vanne de drainage

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