EJECTION APPARATUS FOR HIGH-PRESSURE EJECTION OF A LIQUID

摘要

The invention concerns an apparatus for the high-pressure ejection of a liquid or a particle-containing liquid. The apparatus comprises a pressure chamber (1) which accommodates the liquid, opens into an ejection opening (2) and is delimited by a working piston (3, 8) which can be displaced by a drive in the pressure chamber (1). The drive takes the form of an impact member (4) which exerts a resilient impact on the working piston and can be accelerated such that it is driven until it strikes the working piston end remote from the pressure chamber. The impact member is not driven whilst the impact is transmitted. The volume of the pressure chamber (1) is larger than the displacement volume of the liquid displaced by the working piston (3, 8) during its power stroke.