FORWARD/REVERSE DIRECTION BLOWING FAN FOR AGRICULTURAL PRODUCTS DRYING MACHINE

摘要

The present invention relates to a forward/reverse direction blowing fan for an agricultural product drying machine which has a simple structure and uniformly and stably blows in the forward and reverse directions via the forward/reverse rotation of a motor. The present invention includes a main pipe which is formed into a pipe shape and which includes a first mounting pipe which is relatively short on the inner center, a locking protrusion on the inner tip end of the first mounting pipe, and a plurality of first partition walls between the inner circumference and the outer circumference of the first mounting pipe; a sub pipe which is formed corresponding to the tip end of the main pipe and which includes a second mounting pipe of the size identical to that of the first mounting pipe and a plurality of second partition walls between the inner circumference and the outer circumference of the second mounting pipe corresponding to the positions and size of the first partition walls; a joining unit which is formed on the tip end of the main pipe and the front end of the sub pipe and which joins the main pipe and the sub pipe at the position where the first partition walls of the main pipe and the second partition wall of the sub pipe; the motor which is inserted inside the first mounting pipe and fixed by the locking protrusion and of which a rotary shaft is protruding inward the main pipe; and blade units which are installed on the rotary shaft inward the main pipe and which send air while being rotated by the motor.