Screw conveyor1. Screw conveyor has larger loat capacity2. Easy maintenance3. Dependable performance4conveyor costs economy5. Easy operatescrew conveyor's advantage1, simple structure, cross-section size is small, the cost of the end;2, the middle of loading and unloading easy;3, simple operation;4, conveyoring materials from the outside world, good seal. The helicoid form has the entity screw (the s facture) and the belt screw (the d facture) two kinds. Between various screw shafts uses the flange type joint, had guaranteed universal jointed shaft's interchangeability, is advantageous for the service. The canopy buckles the clamp for the tile type and with the lid on the cabinet, if must improve the sealing property, the user may voluntarily adds the waterproof canvas duck between the canopy and the cabinet. The charging device has the feed head, leaves the material installment discharge hole, the hand pushes the type discharge hole and the rack type discharge hole three kinds in the right way.