Double-shaft bidirectional screw conveyor

The invention discloses a double-shaft bidirectional spiral conveyor which specifically comprises a workbench, protection tables are fixedly connected to the left side and the right side of the outer surface of the workbench, strip-shaped grooves are formed between the opposite sides of the two protection tables, and cleaning mechanisms are slidably connected to the inner surfaces of the strip-shaped grooves. According to the double-shaft two-way spiral conveyor, the cleaning mechanism, the driving mechanism, the feeding mechanism and the conveying mechanism are arranged in the double-shaft two-way spiral conveyor, an auxiliary structure capable of helping workpieces to be conveyed to a conveying table top is additionally arranged on a conveying structure, the workpieces can be conveyed to the position above the table top in sequence, and in addition, it can be guaranteed that a certain distance is kept between the workpieces; in addition, a cleaning structure for the table top is further arranged in the equi