METHOD FOR CRUSHING PRUNING SCRAP AND CRUSHING MACHINE

摘要

PROBLEM TO BE SOLVED: To shorten the time for a fermentation treatment after crushing by shearing pruning scrap by means of a rotary cutter arranged on the rear surface side of a screen provided with plural through-holes while applying a pressure on this screen to rub the pruning scrap thereto, then discharging the pruning scrap from these through-holes. SOLUTION: The pruning scrap dropped from a belt conveyor B1 is charged through a hopper 23 for charging and a feed port 19a into a cylinder 19 under rotation of a screw 8 and is transferred to the front end side of the cylinder 19 by the feed blades 11 of a screw body 10 and is gradually compressed while the pruning scarp is rubbed to the screen 27 provided with the plural through-holes 27a by the pressure applied thereon, the pruning scrap is sheared by respective cutting blades 30 for sharing of the cutter 29 rotating together with the screw 8 on the rear surface side of the screen 27. The cut pruning scrap is discharged from the through-holes 27a. The inner peripheral surface of the cylinder 19 is formed to the bore slightly larger than the outside diameter of the feed blades 11 of the screw 8 and is provided with plural recessed grooves 21b along the axial direction of the cylinder exclusive of the front side half body at the peripheral edge of the feed port 19a so that the vegetable fibers of the pruning scrap are loosened.