DEVICE FOR PROPORTIONAL SUPPLY OF AN ANALYZED LIQUID

Apparatus for the metered supply of an analysis liquid (7) onto a target (5), which involves ejecting the liquid in small quantums, in a pulsating manner, from a nozzle (2) through a nozzle outlet orifice (3) onto the target. So as to permit precise metering of analysis liquid quantums which are dis...

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Bibliographische Detailangaben
1. Verfasser:	SCHLUMBERGER HELMUT
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS SPRAYING OR ATOMISING IN GENERAL TESTING THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Apparatus for the metered supply of an analysis liquid (7) onto a target (5), which involves ejecting the liquid in small quantums, in a pulsating manner, from a nozzle (2) through a nozzle outlet orifice (3) onto the target. So as to permit precise metering of analysis liquid quantums which are distinctly larger than in the case of the "drop on demand" methods used hitherto for analysis liquids, but, on the other hand, are smaller than the minimal metered amounts achievable hitherto using diluters and dispensers, an apparatus is proposed which has a pressure chamber (1) in which the analysis liquid is pressurised, and in which apparatus a valve device (11) having a valve orifice (23) and a closure element (13) moved by an actuator (12) is provided, the valve device (11) being designed in such a way that ejection of the liquid is assisted by the movement of the closure element (13) when closing the valve orifice (23).