| 摘要 |
The present invention relates to a nozzle device for use in a spray 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 member and actuator (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 of an in-use nozzle piece (2). In the replacement operation, the clamping member and actuator (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 member (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 member and actuator (3,4) to said nozzle device body (1).
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