1 results about "Left direction" patented technology

The invention discloses a three-head abrasion-resistant spiral device. The three-head abrasion-resistant spiral device comprises a spiral spindle, A type spiral blades, B type spiral blades, C type spiral blades and abrasion-resistant overlay welding layers; the spiral spindle is connected with the A type spiral blades, the B type spiral blades and the C type spiral blades; the A type spiral blades which are fixed on the spiral spindle in the left direction and the right direction with the opposite screw direction in a full penetration welding mode with a radial center serving as a base point are in butt joint at the radial base point to form into a beak shape and combine into an A type spiral group; the abrasion-resistant layer is welded on an inward 180 mm range of external edges of the A type spiral blades along the radial direction in an overlay mode; the B type spiral blades and the C type spiral blades are fixed as the A type spiral blades; the abrasion-resistant layers are welded on the B type spiral blades and the C type spiral blades as the method of the A type spiral blades; the B type spiral blades and the C type spiral blades are combined into a B type spiral group and a C type spiral group; an equidistance three-head structure is formed with the set interval. The three-head abrasion-resistant spiral device has the advantages of being simple and abrasion-resistant in structure, rapid in discharging, practical, safe and reliable and the like.