Patent ID: 8272577

Claim:
An apparatus for spraying a liquid onto a wire or onto a felt in a paper production facility, comprising: a pipeline for supplying the liquid, said pipeline defining a longitudinal direction; spray nozzles formed to eject the liquid; a shaft with a cleaning device for the spray nozzles or for the inner wall of the pipeline disposed within said pipeline; said shaft being configured with a cylindrical sleeve formed with a slotted guide and a thread and disposed in a housing adjoining said pipeline; a control spindle having a thread disposed to mesh with said thread of said cylindrical sleeve; a first engagement device disposed for transverse adjustment relative to said housing and projecting into said slotted guide in a first position, as a result of which, during a rotation of said control spindle, said shaft is displaced in the longitudinal direction of said pipeline; a second engagement device disposed for coupling said control spindle to said cylindrical sleeve in terms of a rotation thereof, as a result of which, after disengagement of said first engagement device out of said slotted guide, said shaft is rotatable by said control spindle.