Controllable constriction device for the throat of a venturi channel for introducing a liquid additive into a stream of main liquid

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United States of America Patent

PATENT NO 10197071
APP PUB NO 20150361994A1
SERIAL NO

14761555

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Abstract

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Metering device for introducing a liquid additive into a main liquid flowing along a pipe, includes a pump for withdrawing additive from a container and metering it, this pump including a first inlet for receiving a flow of main liquid which drives the pump, a second inlet for picking up additive and an outlet for the resulting mixture; a Venturi installed in the pipe, and connected in parallel with the pump, the first pump inlet connected by a first line to the Venturi inlet while the outlet connected by a second line to the Venturi throat; a first element for varying the restriction at the Venturi neck, and a second element sensitive to the pressure drop across the pump for controlling the first element to reduce the bore section when the pressure drop across the pump increases, and increase the bore section when the pressure drop across the pump decreases.

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Patent Owner(s)

Patent OwnerAddress
DOSATRON INTERNATIONAL33370 TRESSES

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Badii, Manal Merignac, FR 2 12
Duquennoy, Philippe Camarsac, FR 8 59
Furet, Sebastien Bordeaux, FR 3 15
Lambinet, Sandrine Sadirac, FR 6 27

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