Rotary positive displacement pump with soft packing seal for pumping liquids with solids content

摘要

Rotary positive displacement pump with soft packing seal, in particular for conveying conveyed through solids, with a pair of synchronously driven rotors (6) positioned in a conveying space (1), in each case one rotor (6) arranged on one shaft (4, 5) each with one Rotation axis of rotation (7) and with a soft packing gasket positioned in a sealing space (3) comprising a tensioning element (15) and at least one soft packing ring (8) having a median plane (M) and an axial width (b), characterized in that at least one soft packing ring (8) with respect to its median plane (M) at an angle (a) to the axis of rotation (7) is arranged, wherein the axial component (B) of the angle (α) at least the axial width (b) of a soft packing ring (8) corresponds, and wherein the package voltage acts perpendicular to the axis of rotation (7) and for generating the voltage in the radial direction, an elastic sealing ring (9) is provided.