Clutchless internal gear wheel pump with radially moving sealing member for radial compensation

摘要

The present invention comprises an internal gear wheel (6) and a pinion (5) engaged with the wheel (6), the wheel (6) and the pinion (5) being rotatable in a common housing part And the axial extension of the housing 1 and 2 corresponds to the width of the teeth 6 of the wheel 6 and the pinion 5 and has a suction connection 7 and a delivery connection 10 Wherein the wheel has a radial through hole 17 for the medium to be pumped and a radially movable sealing member for the radial seal 30 is provided on the toothed team 14 of the wheel 6 or on the pinion 5 To a latchless internal gear wheel pump which is inserted into the toothed team (13).;The present invention is characterized in that an axial disc 20 movable in the axial direction is provided in the delivery side region of the housing 2 opposed to the rotating tooth of the wheel 6 and the pinion 5, Is pressurized against the rotating teeth by axial pressure derived from the working pressure and compensates for the gap between it and the stationary housing 2 for axial sealing.