Apparatus for applying liquid for a rolling mill

摘要

An apparatus for applying liquid to mill rolls has a bar with two longitudinally extending manifolds. Into the bar are inserted spray nozzles and associated diaphgragm valve structures. One of the manifolds is for the supply of coolant and/or lubricating fluid to the nozzles via the valves. The other manifold has a control fluid (air) under pressure which is used to operate the diaphragm valves to connect or disconnect the supply of coolant/lubricant. To control the control fluid each diaphragm valve unit has a solenoid operated valve for selectively connecting the air at pressure in the second manifold to the diaphragm valve.