| 摘要 |
PROBLEM TO BE SOLVED: To obtain an apparatus for spraying monolithic refractory material of a wet state as an executing material to execute by neumatically conveying the refractory material. SOLUTION: A water supply unit 32 has a water input tube 64 coupled at its one end to a water source to input water, branch tubes 66 branched from the other end of the tube 64 to at least two branch tubes (a) and (b), a coupling tube 68 for again coupling the tubes 66 to one and a water supply tube 40 for supplying the water supplied via the tube 68 to a chamber 30. In this case, solenoid valves 74a, 74b are disposed at an upstream side and water rate valves 76a, 76b having different water rates are disposed at a downstream side in series at the tubes (a) and (b). These valves 74a, 74b are respectively operated to open and close the vales 76a, 76b of the downstream side, and the valves 74a, 74b are started by a switch unit. |
