| 摘要 |
Draw pump has tube (1) connecting surface to water layer to be pumped. Rod (3) carrying pistons is connected to driving mechanism installed on surface giving rod to and fro pumping movement. Mechanism has two identical meshing toothed wheels (7,8) mounted on symmetrical axes relative to trajectory (ZZ) of rod. Motor (10) and belt (11) connected to wheel rotates it. Two identical connecting rods (12,13) are connected to head (14) of rod and to articulation point carried by toothed wheel as to be driven in symmetrical movements relative to rod trajectory and guide, and drive rod and its pistons. |
