| 摘要 |
<p>A water pump (10) that utilizes compressed air for pumping water comprises at least one upright cylinder (12) and characterised by each cylinder having its own exhaust valve (23) and connected to a source of compressed air (13) through its own inlet valve (16), the respective valves being adapted for sequential admission and exhaust of air to each cylinder. Each cylinder is further provided with a water outlet valve (20) and a water inlet valve (24) adapted to operate in combination with the sequential admission and exhaust of air to the respective cylinders.</p> |
