A liquid level control device

The liquid level control device includes casing (1) nested between two floats (2, 10). Float (10) fits inside casing (1) and controls water flow through inlet (3) via closure (12). The base of casing (1) has ports (17) to allow water to flow into a container. Float (2) is affected by the level of wa...

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Bibliographic Details
Main Author AH N. FAH
Format Patent
LanguageEnglish
Published 29.10.2001
Edition7
Subjects
ACTUATING-FLOATS
AGRICULTURE
ANIMAL HUSBANDRY
BLASTING
COCKS
CONTROLLING
CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
FISHING
FORESTRY
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HORTICULTURE
HUMAN NECESSITIES
HUNTING
LIGHTING
MECHANICAL ENGINEERING
PHYSICS
REGULATING
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
TAPS
THERMAL INSULATION IN GENERAL
TRAPPING
VALVES
WATERING
WEAPONS
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Summary:The liquid level control device includes casing (1) nested between two floats (2, 10). Float (10) fits inside casing (1) and controls water flow through inlet (3) via closure (12). The base of casing (1) has ports (17) to allow water to flow into a container. Float (2) is affected by the level of water in the container and opens/shuts vent (8) via closure (9). When the water level is low, float (10) causes closure (12) to operate and feed water into casing (1) and out ports (17) into the container. As the water level rises, float (10) is held down by air trapped inside casing (1) by vent (8) being closed. As float (2) becomes buoyant, it rises to open vent (8). Float (10) then rises and shuts off the water flow. When the water level falls, float (2) lowers and seals vent (8). If the water level continues to drop a partial vacuum is created inside casing (1) and maintains the water level therein. When the water level falls below entry (16), air enters into casing (1) through breather tube (6) and hole (15) to relieve the partial vacuum. Float (10) drops and opens inlet (3) to restart the water filling cycle.
Bibliography:Application Number: ZA20000002030