EXHAUST DEVICE OF FEEDER

摘要

PURPOSE: An exhaust device of a feeder is provided which effectively controls the inside pressure of the feeder. CONSTITUTION: The exhaust device of a feeder comprises: (i) an exhaust duct block(42) which is upward and extendedly installed along the circumference direction of an exhaust port(40) formed on the upper part wall of the feeder to form a discharge passage of a gas generated from the feeder; (ii) a top cover block(47) which is equipped at the top end of the exhaust duct block; (iii) vent cover blocks(49a)(49b) which open and shut an opening(H) between the top cover block and the exhaust duct block; (iv) a pressure detecting part which detects the pressure of the feeder; and (v) a position moving means which moves the position of the vent cover block to at least one direction to control the open degree of the opening based on the detected pressure of the feeder.