NOZZLE APPARATUS IN A SPRAY COATING STATION AND A METHOD FOR CHANGING THE MOUTHPIECE

摘要

The present invention relates to a nozzle device for use in a spry coating station designed for coating a paper or board web, said device comprising a nozzle device body (1), a replaceable nozzle piece (2) and clamping means (3, 4) suited to lock said nozzle piece (2) to said nozzle device body (1). New nozzle pieces (2) are stored in a nozzle replacement apparatus (5, 6) which facilitates rapid replacement if an in-used nozzle piece (2). In the replacement operation, the clamping means (3, 4) serving to lock said nozzle piece (2) are first actuated in order to release said nozzle piece whereafter the worn nozzle piece (2) is removed with the help of transfer means (6) and a new nozzle piece (2) is moved to the nozzle device, and finally said new nozzle piece (2) is locked by said clamping means (3, 4) to said nozzle device body (1).