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GB2086844A - Method and apparatus for dosing liquids - Google Patents

Method and apparatus for dosing liquids Download PDF

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Publication number
GB2086844A
GB2086844A GB8035415A GB8035415A GB2086844A GB 2086844 A GB2086844 A GB 2086844A GB 8035415 A GB8035415 A GB 8035415A GB 8035415 A GB8035415 A GB 8035415A GB 2086844 A GB2086844 A GB 2086844A
Authority
GB
United Kingdom
Prior art keywords
dosant
container
cup
pipe
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB8035415A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority to ZA00795200A priority Critical patent/ZA795200B/en
Application filed by Individual filed Critical Individual
Priority to GB8035415A priority patent/GB2086844A/en
Priority to FR8023740A priority patent/FR2493373A1/en
Priority to AU64200/80A priority patent/AU6420080A/en
Publication of GB2086844A publication Critical patent/GB2086844A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K7/00—Watering equipment for stock or game
    • A01K7/02—Automatic devices ; Medication dispensers
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
    • E03D9/03—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing consisting of a separate container with an outlet through which the agent is introduced into the flushing water, e.g. by suction ; Devices for agents in direct contact with flushing water
    • E03D9/033—Devices placed inside or dispensing into the cistern
    • E03D9/037—Active dispensers, i.e. comprising a moving dosing element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/10—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
    • E03D2009/028—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing using a liquid substance

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Environmental Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Animal Husbandry (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Devices For Dispensing Beverages (AREA)

Abstract

Quanta of dosant liquid confined in an impermeable container (12) are withdrawn gravitationally from the container into a receiver (18) open to atmosphere, thereby causing the pressure in the free space in the container to be reduced to bring the system into hydrostatic equilibrium. Each quantum is discharged from the receiver into the liquid to be dosed, to allow a fresh quantum to be withdrawn from the container. The receiver (18) is moved by a float (24) responsive to the level of liquid in the chamber (10), e.g. a cistern. The dosant liquid may be disinfectant or a nutrient. <IMAGE>

Description

SPECIFICATION Method and apparatus for dosing liquids The invention lies in the field of dispensers for dosing liquids with fluent dosants. Examples are the dosing of disinfectant into water closets and of nutrients into animals' drinking water.
Numerous forms of dosers have been proposed and many put to use. The commonest defect of such known doses is the presence of mechanisms such as valves which, owing to the nature of the dosant, tend to clog and which have therefore to be inspected and cleaned or replaced periodically.
The object of the present invention is to provide a dosing method, and dosing apparatus which has no valves or other mechanism apt to clog, and which is cheap to fabricate, easy to instal and requires minimal maintenance.
According to the invention, a method of dosing a liquid with a fluent dosant consists in confining a body of the dosant in an impermeable container, causing a quantum of the dosant to be withdrawn gravitationally from the body into a receiver open to atmosphere, thereby causing the pressure in the free space above the body to be reduced and bringing the system into a state of hydrostatic equilibrium; and discharging the quantum from the receiver into the liquid to be dosed to allow a fresh quantum to be withdrawn from the container.
Further according to the invention, the receiver is movable relatively to the container in the vertical direction, and in which the quantum in the receiver is discharged by causing the receiver to move upwardly and thereby cause its contents to spill into the liquid to be dosed.
Apparatus to dose liquid with a fluent dosant consists of a container for the dosant that is airimpermeable, means to fill the container, an outlet pipe for gravitational flow of dosant from the container, a vessel located below the container to receive a quantum of dosant from the pipe, the vessel being telescopic with the pipe and open to atmosphere, means to limit downward movement of the vessel and means to discharge the contents of the vessel into the liquid to be dosed.
The means to discharge the receiver may be a float that is attached to it and which, when it is lifted by the liquid being dosed, causes the receiver to empty.
An embodiment of the invention is illustrated in the accompanying drawing which is a schematic sectional side view of the dispenser.
In the drawing, the liquid to be dosed is a volume of water contained in a cistern 1 0 which is part of a water closet. The dispenser or doser consists of a container 12 that has a filler aperture in its base, closed by a cap 14. The cap has a downwardly extending pipe 16. A cup 18 surrounds the pipe 1 6 telescopically. Its inner diameter is larger than the outer diameter of the pipe, so that its cavity is open to the atmosphere.
The cup is limited in its downward telescoping movement relatively to the pipe by a rod 20 that projects upwardly through the pipe and terminates within the cavity of the cap 14. The end of the rod is screw-threaded and carries a nut 22 that, when it comes against the upper end of the pipe within the cap, puts an end to downward movement of the rod and hence the cup. By adjusting the nut 22 on the rod, the movement of the cup relatively to the pipe can be varied.
The cup is attached to a float 24.
The container, when in use, is impermeable to atmospheric air.
In use, the container is removably mounted within the cistern 10 in any suitable manner, with the float hanging downwardly. The container has previously been filled with dosant and the cap 14 is screwed firmly in place.
When the cistern is empty, the cup 1 8 is at its lowermost position with the nut 22 against the upper end of the pipe 16, but notsealing it.
Dosant has flowed gravitationally from the container to fill the cup. Since the system is sealed from the atmosphere except for the annular surface 26 of dosant in the cup, filling of the cup has created a reduced pressure in the free space 28 above the body of dosant in the container. This partial vacuum, together with the atmospheric pressure on the annulus 26 of dosant, brings the system into a state of hydrostatic equilibrium with no spillage of dosant over its lip.
Water then enters the cistern and, as it rises, it lifts the float until the cup bottoms on the lower end of the pipe. While this is happening, a quantum of dosant in the cup is caused to spill out over its edge into the cistern. The lip is, of course, always above water level, so that no water can enter the cup.
The pipe is still full of dosant as is the annulus between the pipe and the cup, and the system is again in hydrostatic equilibrium and no dosant enters the cistern.
At the next flush of the cistern, the float descends, the cup drops with it and dosant enters the cup to fill it. Again, owing to the barometric effect due to withdrawal of dosant from the sealed container, flow of dosant into the cup is arrested when the cup has reached its lower limit of travel; and the cycle is repeated.
Adjustment of the position of the cup on the rod varies the lower limit of travel of the cup and therefore of the quantity of dosant ejected from the cup during its upward travel. The longer the travel of the cup, the greater will be the quantum of dosant dispensed.
Since the dispenser has no working parts the interaction of which can be affected by precipitation of solids from the dosant, the dispenser is trouble-free and requires substantially no maintenance.
1. A method of dosing a liquid with a fluent dosant, which consists in confining a body of the dosant in an impermeable container, causing a quantum of the dosant to be withdrawn gravitationally from the body into a receiver open to atmosphere, thereby causing the pressure in
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (8)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Method and apparatus for dosing liquids The invention lies in the field of dispensers for dosing liquids with fluent dosants. Examples are the dosing of disinfectant into water closets and of nutrients into animals' drinking water. Numerous forms of dosers have been proposed and many put to use. The commonest defect of such known doses is the presence of mechanisms such as valves which, owing to the nature of the dosant, tend to clog and which have therefore to be inspected and cleaned or replaced periodically. The object of the present invention is to provide a dosing method, and dosing apparatus which has no valves or other mechanism apt to clog, and which is cheap to fabricate, easy to instal and requires minimal maintenance. According to the invention, a method of dosing a liquid with a fluent dosant consists in confining a body of the dosant in an impermeable container, causing a quantum of the dosant to be withdrawn gravitationally from the body into a receiver open to atmosphere, thereby causing the pressure in the free space above the body to be reduced and bringing the system into a state of hydrostatic equilibrium; and discharging the quantum from the receiver into the liquid to be dosed to allow a fresh quantum to be withdrawn from the container. Further according to the invention, the receiver is movable relatively to the container in the vertical direction, and in which the quantum in the receiver is discharged by causing the receiver to move upwardly and thereby cause its contents to spill into the liquid to be dosed. Apparatus to dose liquid with a fluent dosant consists of a container for the dosant that is airimpermeable, means to fill the container, an outlet pipe for gravitational flow of dosant from the container, a vessel located below the container to receive a quantum of dosant from the pipe, the vessel being telescopic with the pipe and open to atmosphere, means to limit downward movement of the vessel and means to discharge the contents of the vessel into the liquid to be dosed. The means to discharge the receiver may be a float that is attached to it and which, when it is lifted by the liquid being dosed, causes the receiver to empty. An embodiment of the invention is illustrated in the accompanying drawing which is a schematic sectional side view of the dispenser. In the drawing, the liquid to be dosed is a volume of water contained in a cistern 1 0 which is part of a water closet. The dispenser or doser consists of a container 12 that has a filler aperture in its base, closed by a cap 14. The cap has a downwardly extending pipe 16. A cup 18 surrounds the pipe 1 6 telescopically. Its inner diameter is larger than the outer diameter of the pipe, so that its cavity is open to the atmosphere. The cup is limited in its downward telescoping movement relatively to the pipe by a rod 20 that projects upwardly through the pipe and terminates within the cavity of the cap 14. The end of the rod is screw-threaded and carries a nut 22 that, when it comes against the upper end of the pipe within the cap, puts an end to downward movement of the rod and hence the cup. By adjusting the nut 22 on the rod, the movement of the cup relatively to the pipe can be varied. The cup is attached to a float 24. The container, when in use, is impermeable to atmospheric air. In use, the container is removably mounted within the cistern 10 in any suitable manner, with the float hanging downwardly. The container has previously been filled with dosant and the cap 14 is screwed firmly in place. When the cistern is empty, the cup 1 8 is at its lowermost position with the nut 22 against the upper end of the pipe 16, but notsealing it. Dosant has flowed gravitationally from the container to fill the cup. Since the system is sealed from the atmosphere except for the annular surface 26 of dosant in the cup, filling of the cup has created a reduced pressure in the free space 28 above the body of dosant in the container. This partial vacuum, together with the atmospheric pressure on the annulus 26 of dosant, brings the system into a state of hydrostatic equilibrium with no spillage of dosant over its lip. Water then enters the cistern and, as it rises, it lifts the float until the cup bottoms on the lower end of the pipe. While this is happening, a quantum of dosant in the cup is caused to spill out over its edge into the cistern. The lip is, of course, always above water level, so that no water can enter the cup. The pipe is still full of dosant as is the annulus between the pipe and the cup, and the system is again in hydrostatic equilibrium and no dosant enters the cistern. At the next flush of the cistern, the float descends, the cup drops with it and dosant enters the cup to fill it. Again, owing to the barometric effect due to withdrawal of dosant from the sealed container, flow of dosant into the cup is arrested when the cup has reached its lower limit of travel; and the cycle is repeated. Adjustment of the position of the cup on the rod varies the lower limit of travel of the cup and therefore of the quantity of dosant ejected from the cup during its upward travel. The longer the travel of the cup, the greater will be the quantum of dosant dispensed. Since the dispenser has no working parts the interaction of which can be affected by precipitation of solids from the dosant, the dispenser is trouble-free and requires substantially no maintenance. CLAIMS
1. A method of dosing a liquid with a fluent dosant, which consists in confining a body of the dosant in an impermeable container, causing a quantum of the dosant to be withdrawn gravitationally from the body into a receiver open to atmosphere, thereby causing the pressure in the free space above the body to be reduced and bringing the system into a state of hydrostatic equilibrium; and discharging the quantum from the receiver into the liquid to be dosed to allow a fresh quantum to be withdrawn from the container.
2. The method of Claim 1 in which the receiver is movable relatively to the container in the vertical direction, and in which the quantum in the receiver is discharged by causing the receiver to move upwardly and thereby cause its contents to spill into the liquid to be dosed.
3. A dispenser for dosing fluent dosant into a liquid, which consists of a container for the dosant that is air-impermeable, means to fill the container, an outlet pipe for gravitational flow of dosant from the container, a vessel located below the container to receive a quantum of dosant from the pipe, the vessel being telescopic with the pipe and open to atmosphere, means to limit downward movement of the vessel, and means to discharge the contents into the liquid to be dosed.
4. The dispenser of Claim 3 in which the discharging means comprises a float attached to the vessel.
5. The dispenser of either of Claims 3 or 4 in which the means to limit downward movement of the vessel is adjustable to vary the dosage.
6. The dispenser of Claim 5 in which the adjustable means is a rod that is connected to the vessel to limit its downward movement and the effective length of the rod is adjustable.
7. A method of dosing liquid with a fluent dosant substantially as herein described.
8. A dispenser for dosing liquid with a fluent dosant substantially as herein described with reference to the accompanying drawing.
GB8035415A 1979-10-01 1980-11-04 Method and apparatus for dosing liquids Withdrawn GB2086844A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ZA00795200A ZA795200B (en) 1979-10-01 1979-10-01 A novel method and apparatus for dosing liquids
GB8035415A GB2086844A (en) 1979-10-01 1980-11-04 Method and apparatus for dosing liquids
FR8023740A FR2493373A1 (en) 1979-10-01 1980-11-06 METHOD AND APPARATUS FOR DISPENSING A DOSE OF A FLUID AGENT IN A LIQUID
AU64200/80A AU6420080A (en) 1979-10-01 1980-11-07 Cistern dosing

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ZA00795200A ZA795200B (en) 1979-10-01 1979-10-01 A novel method and apparatus for dosing liquids
GB8035415A GB2086844A (en) 1979-10-01 1980-11-04 Method and apparatus for dosing liquids
FR8023740A FR2493373A1 (en) 1979-10-01 1980-11-06 METHOD AND APPARATUS FOR DISPENSING A DOSE OF A FLUID AGENT IN A LIQUID
AU64200/80A AU6420080A (en) 1979-10-01 1980-11-07 Cistern dosing

Publications (1)

Publication Number Publication Date
GB2086844A true GB2086844A (en) 1982-05-19

Family

ID=27423652

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8035415A Withdrawn GB2086844A (en) 1979-10-01 1980-11-04 Method and apparatus for dosing liquids

Country Status (4)

Country Link
AU (1) AU6420080A (en)
FR (1) FR2493373A1 (en)
GB (1) GB2086844A (en)
ZA (1) ZA795200B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2243378A (en) * 1990-04-24 1991-10-30 Anthony John Crabtree Dispensing container
GB2297098A (en) * 1995-01-17 1996-07-24 Lan Liao Su Toilet disinfectant release apparatus
WO1998007010A1 (en) * 1996-08-07 1998-02-19 Joelsson Soeren A dosage device
GB2356851A (en) * 1999-12-03 2001-06-06 Chaub Eddra Djamel A bleach dispenser for a toilet flush
WO2004113631A1 (en) 2003-06-16 2004-12-29 Jeyes Group Limited A liquid dispensing device
GB2517131A (en) * 2013-06-09 2015-02-18 Perrymac Ltd Dispenser for use with sanitary appliances
EP2886728A1 (en) * 2013-12-20 2015-06-24 Manuel Losada Campos A cistern with a product dispenser

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH274474A (en) * 1950-04-06 1951-04-15 Schmidiger Robert Additional liquid dispenser for water closets.
FR1278126A (en) * 1960-10-27 1961-12-08 Aufra Lab Improvements to sanitary facilities
DE2748552C2 (en) * 1977-10-28 1987-03-19 Georg 7800 Freiburg Schreieder Device for the metered addition of a flowable additive into rinsing water systems or the like.

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2243378A (en) * 1990-04-24 1991-10-30 Anthony John Crabtree Dispensing container
GB2243378B (en) * 1990-04-24 1994-07-06 Anthony John Crabtree Dispensing container
GB2297098A (en) * 1995-01-17 1996-07-24 Lan Liao Su Toilet disinfectant release apparatus
GB2297098B (en) * 1995-01-17 1998-03-11 Lan Liao Su Toilet disinfectant release apparatus
WO1998007010A1 (en) * 1996-08-07 1998-02-19 Joelsson Soeren A dosage device
GB2356851A (en) * 1999-12-03 2001-06-06 Chaub Eddra Djamel A bleach dispenser for a toilet flush
GB2356851B (en) * 1999-12-03 2001-11-28 Chaub Eddra Djamel Automatic bleach dispencer for toilet flush
WO2004113631A1 (en) 2003-06-16 2004-12-29 Jeyes Group Limited A liquid dispensing device
US8032953B2 (en) 2003-06-16 2011-10-11 Jeyes Group Limited Liquid dispensing device
GB2517131A (en) * 2013-06-09 2015-02-18 Perrymac Ltd Dispenser for use with sanitary appliances
EP2886728A1 (en) * 2013-12-20 2015-06-24 Manuel Losada Campos A cistern with a product dispenser

Also Published As

Publication number Publication date
FR2493373A1 (en) 1982-05-07
ZA795200B (en) 1981-03-25
AU6420080A (en) 1982-05-13

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)