| 摘要 |
The invention relates to a gear pump (1) comprising a pumping chamber (2) in which a first shaft (8) and a second shaft (9) are rotated about their respective axes (D8, D9), each of the first and second shafts (8, 9) supporting at least one hydraulic-pumping element (20) that hydraulically pumps a fluid in the pumping chamber (2), said at least one hydraulic-pumping element (20) of each of said first and second shafts (8, 9) being positioned in said pumping chamber (2) and each having at least one first radial projection (21). In the pumping chamber (2), each of said first and second shafts (8, 9) further supports at least one mechanical drive pinion (14) that rotates each of said first and second shafts (8, 9), each mechanical drive pinion (14) having second radial projections (15). Said at least one mechanical drive pinion (14) is separate from said at least one hydraulic-pumping element (20), and the number of said at least one first radial projection (21) and of said second radial projections (15) is different. |
