NOZZLE UNIT

摘要

A nozzle unit for use at a precise dosage of liquid in small quantities and which comprises a nozzle body (1) with a substantially conical nozzle duct (5) in a region near by the nozzle orifice (6) may meet the conflicting requirements concerning a large section of the nozzle orifice for a high rate of throughput, and a small section of the nozzle orifice for a small drop size so as to obtain a high accuracy of dosage. This is the case if the nozzle body (1), at least in the region (4) in the immediate vicinity of the nozzle orifice (6) is made of elastical material, preferably acid-proof rubber. In case such a nozzle unit is intended to work with high pressures it may be provided with a reinforcement, e.g. in the form of a surrounding tube (7), so as to prevent the occurence of the so-called balloon-effect.