Patent ID: 7802915

Claim:
A device for adjusting the degree of mixing installed in mixing equipment equipped with a kneading/mixing screw for mixing material while feeding the material to a downstream side, the device comprising: a gate member, said gate member being moved relative to a portion of a circular section provided in the kneading/mixing screw in such a manner that the area of a flow path formed between said gate member and the portion of a circular section changes to adjust the degree of mixing of the material; drive means for moving said gate member; and drive quantity changing means provided in said drive means, said drive quantity changing means being constructed so as to give a relation between a drive quantity, x, of said drive means and a movement quantity, Δδ, of said gate member such that when a degree of opening, δ, of said gate member is small, a change rate of the movement quantity, Δδ, relative to the drive quantity, x, becomes smaller.