Screw pump

A screw spindle pump for the delivery of fluid media with a pump housing, comprising:

• at least one inlet channel with a first longitudinal axis;
• at least one outlet channel with a second longitudinal axis;
• a drive spindle with a third longitudinal axis;
• and
• at least one driven spindle;
• wherein the drive spindle and at least one driven spindle are disposed at least section-wise in the pump housing, the drive spindle and at least one driven spindle each comprise a profiled section between the at least one inlet channel and the at least one outlet channel, wherein the profiled sections of the drive spindle and at least one driven spindle are engaged at least partially with one another and form, with the pump housing between the at least one inlet channel and the at least one outlet channel, a delivery section parallel to the third longitudinal axis of the drive spindle with delivery chambers for the fluid medium;
• wherein the second longitudinal axis of the at least one outlet channel is disposed at an obtuse angle to the delivery section in the pump housing;
• wherein the drive spindle is constituted at least section-wise as a concavely rounded conically shaped section;
• and
• wherein the concavely rounded conically shaped section tapers in the direction of the profiled section.

A screw spindle pump for the delivery of fluid media with a pump housing, comprising:

• at least one inlet channel with a first longitudinal axis;
• at least one outlet channel with a second longitudinal axis;
• a drive spindle with a third longitudinal axis;
• and
• at least one driven spindle;
• wherein the drive spindle and at least one driven spindle are disposed at least section-wise in the pump housing, the drive spindle and at least one driven spindle each comprise a profiled section between the at least one inlet channel and the at least one outlet channel, wherein the profiled sections of the drive spindle and at least one driven spindle are engaged at least partially with one another and form, with the pump housing between the at least one inlet channel and the at least one outlet channel, a delivery section parallel to the third longitudinal axis of the drive spindle with delivery chambers for the fluid medium;
• wherein the second longitudinal axis of the at least one outlet channel is disposed at an obtuse angle to the delivery section in the pump housing;
• and
• wherein the screw spindle pump has three spindles, with a drive spindle and two female screw spindles, wherein the longitudinal axes of the three spindles are disposed in parallel and in a plane, wherein the longitudinal axis of the drive spindle is disposed centrally between the longitudinal axes of the female screw spindles.