A wide-ridge kneading block of a parallel twin-screw extruder has a total length of 35mm~80mm, an outer diameter of 34~280mm, and an inner hole diameter which is half of the outer diameter; the inner hole is fully processed with splines by broaching, and the splines have a module of 0.8~4.5, which increases the strength of the wide-ridge kneading block. The last screw ridge piece has only half the width of other wide-ridge screw ridge pieces, and a gap of 0.8mm~2.4mm is arranged between every two screw ridge pieces. The kneading block is short in length with 3~4 screw ridge pieces, which allows the arrangement of wider screw ridge pieces and realizes the advantages of rolling and kneading of wide ridges in use. Four types of kneading blocks with angular structures are arranged, with the last piece being 180 degrees or 90 degrees, which can be used alone or two pieces together; the screw ridge pieces with half width of the two pieces are butted to form a wide-ridge screw ridge piece, and two 90-degree pieces are combined to form a 180-degree kneading block. The arrangement increases the strength of the kneading block and expands the combination range of the kneading block and threaded elements.
Country Code: CN
Application Number: CN202321971968.X
