A bi-directional spiral material-discharging bin is composed of a material level instrument, a material-discharging bin body, a material-pushing bin, a motor transmission device, a screw and a blow-off valve. The upper portion of the material-discharging bin body is cylindrical, the bottom of the material-discharging bin body is conical, a cone base is provided with a material outlet, the material-pushing bin is cylindrical and is provided with an upper feed port and a lower discharging port, the material-pushing bin end of the bi-directional screw is spiral in the forward direction, the
tail end of the material-pushing bin is spiral in the reverse direction, the material level instrument for measuring the height of an accumulated material in the material-discharging bin body is fixedly installed in the material-discharging bin body, an upper feeding port
flange on the material-pushing bin is in sealed connection with a cone base material outlet
flange of the material-discharging bin body in a bolted connection mode, and the blow-off valve is in sealed connection with a material-pushing bin lower discharging port
flange in a bolted connection mode. The problem that due to the inborn inherent defects of a traditional material-discharging bin in structural design, the traditional material-discharging bin is complex in structure and large in volume is large, easily-damaged parts are many, the reliability is poor, the traditional material-discharging bin does not save energy and is not
environmentally friendly, intermittent
discharge is caused, and large discharging
impact is caused is solved well.