PADDY FIELD VALVE FOR SEMIAUTOMATICALLY SUPPLYING PREDETERMINED AMOUNT OF WATER

• Main Authors: INUI MASAYOSHI, NAKAMURA NORIAKI, KOIKE SEIICHI
• Format: Patent
• Language: English
• Published: 24.09.2009
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED; FISHING; FIXED CONSTRUCTIONS; FORESTRY; FOUNDATIONS; HORTICULTURE; HUMAN NECESSITIES; HUNTING; HYDRAULIC ENGINEERING; SOIL SHIFTING; TRAPPING; WATERING

PROBLEM TO BE SOLVED: To provide a paddy field valve for semiautomatically supplying a predetermined amount of water which automatically stops water supply when the predetermined amount of water is supplied, and which is surely opened or closed owing to a large valve-opening degree even when the water-supply pressure is low. SOLUTION: The paddy field valve is structured as follows: a cylinder chamber 4 is separated into a diaphragm chamber 45 and an auxiliary chamber 46 via a diaphragm body 42; the diaphragm body 42 is set up in one chamber so as to be expandable and displaceable; the diaphragm chamber 45 and the auxiliary chamber 46 are respectively communicated with the air and the side of a water supply port 30 of a valve chamber 3 via a switching valve 8 linked with a water supply flow amount-integrating meter 6; the auxiliary chamber 46 is communicated with the side of the water supply port 30 via the switching valve 8, and the diaphragm chamber 45 is switched so as to be communicated with the air, so that the valve body 40 is opened due to displacement of the diaphragm body 42 when the water supply flow amount is under a preset amount; and the diaphragm chamber 45 and the side of the water supply port 30 are communicated with each other via the switching valve 8 and the auxiliary chamber 46 is communicated with the air, so that the valve body 40 is closed due to displacement of the diaphragm body 42 when the water supply flow amount reaches to a preset amount. COPYRIGHT: (C)2009,JPO&INPIT