Double-roller rice threshing device

The invention belongs to the technical field of agricultural equipment, and particularly relates to a double-roller rice threshing device which comprises a threshing machine. A pair of hollow threshing rollers is rotationally connected into the threshing machine, magnetic blocks are fixedly connected to the inner walls of the threshing rollers, a pair of motors for driving the threshing rollers are arranged on one side of the threshing machine, and a rotating shaft is rotationally connected to the inner wall of the threshing machine; stems with rice grains are threshed through the threshing roller, at the moment, the threshed grains and some smashed stem impurities fall on the first screen, the shaking first screen shakes and screens the grains, impurities larger than the grains are left on the screens, and therefore the effect of screening the grains and the impurities is achieved; subsequent processing of the grains is facilitated, and meanwhile, the shaking first screen can reduce the situation that meshes