ROTARY PISTON PUMP HAVING DIRECT DRIVE

摘要

The invention relates to a rotary piston pump comprising a pump housing with a pump chamber, an inlet and an outlet opening, a first multi-lobed rotary piston arranged in the pump chamber and rotatably mounted around a first axis and a second multi-lobed rotary piston arranged in the pump chamber which is rotatably mounted around a second axis spaced apart from the first axis and meshes with the first rotary piston, wherein the first and second rotary pistons, by rotating around the first and the second axis respectively, create a fluid flow from the inlet to the outlet opening, a drive unit which is mechanically coupled with the rotary pistons in order to drive the rotary pistons. According to the invention, the drive unit comprises a first electric drive motor, which is mechanically coupled with the first rotary piston for driving the first rotary piston, and a second electric drive motor, which is mechanically coupled with the second rotary piston for driving the second rotary piston.

主权项

1. Rotary lobe pump, comprising
a pump housing with a pump chamber an inlet and an outlet opening a first multi-lobe rotary piston arranged in the pump chamber and rotatably mounted about a first axis, and a second multi-lobe rotary piston arranged in the pump chamber, which is rotatably mounted about a second axis spaced from the first axis and intermeshing with the first rotary piston, wherein the first and second rotary piston generate a fluid flow from the inlet to the outlet opening by rotating around the first and second axis, respectively, a drive unit, which is mechanically coupled with the rotary pistons for driving the rotary pistons,wherein the first and second rotary piston each comprises a number of N lobes, where N is greater than or equal to two and the lobes of the first and the second rotary piston run helically along the peripheral surface of the rotary piston and in doing so sweep an angle of at least 300° divided by N, preferably 360° divided by N, and in that the drive unit comprises a first electric drive motor which is mechanically coupled with the first rotary piston for driving the first rotary piston and a second electric drive motor which is mechanically coupled with the second rotary piston for driving the second rotary piston.