High pressure liquid wax spray device for cavity preservation in motor car, has control valves releasing spraying compound supply channels to spraying nozzle in working position, where valves are blocked by nozzle drives in waiting position

摘要

The device has multiple spraying nozzles (1a, 1b) shiftable between a waiting position and a spraying compound-flowing working position. Each spraying nozzle is provided with a separate reversible nozzle drive (7) i.e. pneumatic piston drive, and control valves (11, 22, 24) coupled with the nozzle drive. The control valves are blocked by the respective nozzle drives in the waiting position, and release spraying compound supply channels (13, 20, 21) to the spraying nozzle in the working position. The control valves are mechanically coupled with the associated nozzle drive.