FIELD: pumps.
SUBSTANCE: group of inventions relates to a screw pump. Screw pump comprises a body (2), a drive screw (7) placed therein, and at least one driven screw (9) engaged therewith with two end face surfaces, respectively. A thrust surface is provided in the axial direction adjacent to at least one face surface of the driven screw (9). The driven screw (9) is positioned with an axial gap, configured to be displaced perpendicular to the thrust surface.
EFFECT: higher efficiency of the screw pump.
17 cl, 2 dwg
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