Reflux self-circulating brown rice wetting and modifying machine

The invention relates to a reflux self-circulating brown rice wetting and modifying machine, which comprises a fixed and static wetting bin. The lower part of the shell of a feeding conveyor screw is welded into a whole with the wetting bin, the upper part of the shell of the feeding conveyor screw is supported by a crossed angle steel in the wetting bin, and the angle steel, the wetting bin and the shell of the feeding conveyor screw are welded; and the lower end of the rotating screw of the feeding conveyor screw is connected with a driven shaft into a whole by a hexagon-headed bolt, and the upper end of the rotating screw of the feeding conveyor screw is connected with a driving shaft into a whole by a hexagon-headed bolt. The driving shaft is supported by a cross beam, a bearing block and a single-row conical roller bearing and is powered by an electromagnetic speed regulating motor through a driven V belt wheel, a vee belt and a driving V belt wheel; and the driven shaft is supported by a unidirectional