Novel sisal fiber extraction method and device

The invention provides a novel sisal fiber extraction method and device. The method comprises the steps that sisal leaves are crosswise fed into one hemp peeling mechanism from the middle of the sisal leaves, and fibers are obtained through direct reverse drawing. The device comprises a feeding mechanism, a sisal leaf clamping and delivery mechanism, a fiber clamping and delivery mechanism, a left hemp peeling mechanism and a right hemp peeling mechanism, sisal leaf base crushing mechanism, and a power and transmission device, wherein the sisal leaves and the fiber clamping and delivery mechanism are arranged in an inclined mode toward the hemp peeling mechanisms and perpendicular to the crushing mechanism, a chain and a belt are arranged in parallel and the delivery speeds are the same, and the linear speed of a crushing roller is 1.4 times those of the chain and the belt. Double-vane rolling cylinders with two vanes rotating in opposite directions serve as the hemp peeling mechanisms. The sisal leaves are crosswise fed into the left hemp peeling mechanism by the feeding mechanism, fibers are drawn out by the sisal leaf clamping chain and enter the fiber clamping belt, tip fibers are further drawn out, bases enter the right hemp peeling mechanism after winding around the shaft end of the crushing roller, and base fibers are reversely drawn out. By the adoption of the method and device in sisal fiber extraction, the per capita productivity of an existing device is improved by 2 to 3 times, and the productivity per kilowatt hour is improved by 1 to 2 times.