Device for deformational processing of materials (variants)

A device for deformational processing of materials comprising a screw extruder having

• a housing with a cylindrical inner surface and
• a screw
• each one of both of them presenting at least one deformation portion arranged between the screw turns,
• the extruder housing having, on the inner surface of at least one deformation portion, several protrusions arranged in two rows on a circumference and with a space between the same and the outer cylindrical surface of the screw body between the turns of the last,
• the screw having, on the outer surface of at least one deformation portion, several protrusions arranged in a row on a circumference between the rows of protrusions of the housing and with a space between the screw protrusions and the inner surface of the housing,
• sizes of said protrusions in the axial direction and the arrangement thereof being selected so that when the protrusions of the housing and the protrusions of the screw are facing each other, they form couples of protrusions having, between plain facing surfaces of the protrusions of the housing and of the protrusions of the screw, a distance equal to a minimum allowable clearance L1 for some couples of protrusions, the other couples of protrusions having the distance L2 that is not less than the half-height of a screw turn.

A device for deformational processing of materials comprising a screw extruder having

• a housing with a cylindrical inner surface and
• a screw
• each one of both of them presenting at least one deformation portion located between the screw turns,
• the screw having, on the outer surface of at least one deformation portion, several protrusions arranged in two rows on a circumference and with a space between
• the screw protrusions and the inner surface of the housing, the extruder housing having, on the inner surface of at least one deformation portion, several protrusions arranged in a row on a circumference between the rows of screw protrusions and with a space between the housing protrusions and the outer cylindrical surface of the screw body between the turns of the same,
• sizes of said protrusions in the axial direction and the arrangement thereof being selected so that when the protrusions of the housing and the protrusions of the screw of at least one row are facing each other, they form couples of protrusions having, between plain facing surfaces of the protrusions of the housing and of the protrusions of the screw, a distance equal to a minimum allowable clearance L1 for some couples of protrusions, the other couples of protrusions having the distance L2 that is not less than the half-height of a screw turn.