Dispensing device for liquids

G - Physics – 01 – F

Patent

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Details

G01F 11/04 (2006.01) A01M 7/00 (2006.01) A01M 21/04 (2006.01) G01F 13/00 (2006.01) G01F 15/00 (2006.01)

Patent

CA 2664072

A dispensing device for dispensing a predetermined amount of liquid which is supplied to the device under pressure in which the amount of liquid dispensed by the device is determined by a timer which comprises a piston moving within a cylinder whose speed of movement from an open position, in which the flow to the outlet valve is open, to a closed position, in which the flow to the outlet valve is closed, is controlled by a damping mechanism, characterised in that the damping mechanism is a liquid which is pumped by the piston through an orifice, is claimed. The volume which is to be dispensed by the device can conveniently be adjusted by changing the size of said orifice. In a preferred embodiment the invention is suitable for dispensing a predetermined volume of liquid, preferably a solution of agricultural chemicals, for spot application of said chemicals.

L'invention concerne un dispositif de distribution permettant de distribuer un volume prédéterminé de liquide qui est fourni au dispositif sous pression, le volume de liquide distribué par le dispositif étant déterminé par une temporisation qui comporte un piston se déplaçant dans un cylindre dont la vitesse de mouvement d'une position ouverte, dans laquelle l'écoulement jusqu'à la vanne de sortie est ouvert, à une position fermée, dans laquelle l'écoulement jusqu'à la vanne de sortie est fermé, est commandée par un mécanisme amortisseur, caractérisé en ce que le mécanisme amortisseur est un liquide qui est pompé par le piston au travers d'un orifice. Le volume devant être distribué par le dispositif peut être ajusté de manière pratique en changeant la taille dudit orifice. Dans un mode de réalisation préféré, l'invention convient bien à la distribution d'un volume prédéterminé de liquide, de préférence une solution de produits agrochimiques, pour une application localisée desdits produits chimiques.

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