The apparatus for carrying out a piston metering for precise metering of liquids

摘要

The apparatus for carrying out a piston metering for exact dosage of liquids, comprising– a cylinder (1),– a guided therein and is motor-driven hollow piston (2) with a cavity formed at the end face (3) and with a running through the interior of the connecting channel (5) between the hollow space (3) and an outlet opening (6) to the invention in its wall,– one of the outlet opening (6) in the hollow piston (2) outgoing first connecting conduit (7, of a device),– a 2 - paths - change-over valve (4), which at the first connecting line (7) is mounted and which is connected to a storage container (8) for the liquid to be metered into communication,– a and the reversing valve (4), which is connected to the second connecting line (9) on its end with a injection nozzle (10),the change-over valve (4) in a position, the connection between the storage container (8) and the connecting channel (5) on the one hand and in the other position, the connection between the connection channel (5) and the injection nozzle (10), on the other hand, provides.