| 主权项 |
1. A lobe pump comprising:
a) a housing having an inlet and an outlet and walls, b) a first shaft and a second shaft, the shafts being elongated cylinders, the first shaft extending beyond a wall of the housing such that it is rotated by a motor, the shafts fixed within the housing such that their long axes are parallel, the shafts coupled through use of timing gears affixed to a first end of each shaft such that rotation of the first shaft by the motor causes the second shaft to rotate, c) a plurality of segments, each segment comprising:
i) a first lobe rotor having a center, a top surface, a bottom surface, sidewalls and a plurality of lobes symmetrically extending from the center, the lobes extended at a lobe separation angle from one another, the first lobe rotor fixedly attached to the first shaft through the center of the first lobe rotor such that rotation of the first shaft causes the first lobe rotor to rotate,ii) a second lobe rotor having a center, a top surface, a bottom surface, sidewalls and a plurality of lobes symmetrically extending from the center, the lobes extended at a lobe separation angle from one another, wherein the first lobe rotor and the second lobe rotor have the same number of lobes and lobe angles, the second lobe rotor fixedly attached to the second shaft through the center of the second lobe rotor such that the rotation of the second shaft causes the second lobe rotor to rotate,iii) separation plates positioned above and below the first lobe rotor and the second lobe rotor adjacent to the top and bottom surfaces of the first lobe rotor and the second lobe rotor, said separation plates acting to physically isolate the segments from one another,iv) the shafts and the first lobe rotor and the second lobe rotor positioned such that the simultaneous rotation of the first lobe rotor and the second lobe rotor results in meshing of the first lobe rotor and the second lobe rotor thereby causes a pumping action wherein a fluid enters a central portion of each of the first lobe rotor and the second lobe rotor at the inlet of the housing, passes through a pump chamber isolation region, and the fluid is displaced from each of the first lobe rotor and the second lobe rotor at the outlet by the second lobe rotor and the first lobe rotor respectively,v) wherein there is a separate pump chamber isolation region for each of the first lobe rotor and the second lobe rotor defined as a volume of space within the housing and delineated by a wall of the housing and the lobe rotor, the pump chamber isolation region having a pump chamber isolation region arc, d) wherein in the plurality of segments, the first lobe rotors attached to the same shaft and in adjacent segments are aligned to be rotationally displaced from one another by an index angle, and the second lobe rotors attached to the same shaft and in adjacent segments are aligned to be rotationally displaced from one another by the index angle, and, e) the pump chamber isolation region arc is equal to the lobe separation angle, and, f) the index angle is equal to the lobe separation angle divided by the number of segments. |
