INJECTION SCREW Russian patent published in 2015 - IPC F04C18/16 F04C28/10 

FIELD: machine building.

SUBSTANCE: injection screw contains casing 3 having end face, rear and side walls 4, 5 and 6, screw rotors 1 and 2, output window made in the wall 4, input window 7 made in top part of the casing 3 in form of a throughput box element 9 with walls, inside which the injection screw productivity adjustment device is installed made in form of at least two connected shutters 14 installed with possibility of movement along the longitudinal axial line of the casing 3. The productivity adjustment device contains device for movement of the shutters 14 connected with each other by means of a flexible connection 17 with possibility of shutters 14 rotation relatively to each other around the axis at right angle to the longitudinal axial line of the casing 3 made in form of a wheel installed with possibility of rotation with rolling over shutters 14 and their consequential winding on the wheel. The wheel rolling axis is parallel to rotation axes of the shutters 14, on it one of the outmost shutters 14 located from wall 5 side and drive tie-rod are rigidly secured.

EFFECT: increased efficiency of adjustment of air supply and pressure at inlet of the internal-combustion engine.

9 cl, 11 dwg