DUST DISCHARGING VALVE AND DUST DISCHARGING STRUCTURE

摘要

PROBLEM TO BE SOLVED: To suppress the inward bending of a lip part near a slit even when the height of the lip part of a dust discharging valve is formed low.;SOLUTION: The dust discharging valve 17 is disposed at the dust separating part of a pre-cleaner. An openable lip part 19a is formed at the lower end of the bottom wall part 19 of the dust discharging valve 17. A pair of weights 21 for opening the lip part 19a during vibration is installed on both sides of the lip part 19a. When the inside of the dust discharging valve 17 is brought into a negative pressure state, both weights 21 are brought into contact with each other through the lip part 19a of the bottom wall part 19 to suppress the curved deformation to the inside of the bottom wall part 19 of the lip part 19a.;COPYRIGHT: (C)2007,JPO&INPIT