| 摘要 |
PROBLEM TO BE SOLVED: To simply break up a mass or a bridge of a chemical at a chemical discharge port.SOLUTION: A chemical spray apparatus 1 includes: a chemical discharge port 13a for discharging a chemical stored in a hopper 4; a shutter 15 provided to move away from or close to an opening face of the chemical discharge opening 13a in a substantially vertical direction; and a control part 9 for controlling the shutter 15 to open the chemical discharge port 13a by moving the shutter 15 away in spraying the chemical, and on the other hand to close the chemical discharge port 13a by moving and abutting the shutter 15 to the chemical discharge port 13a in stopping spraying. The control part 9 is configured to control the shutter to continuously perform the opening operation and the closing operation according to a predetermined operation instruction input from a user through a shutter continuous opening and closing switch 20b. |
