| 摘要 |
<p>A pump ( 60, 160 ) has a pair of working members (preferably diaphragms 1, 2, 101, 102 ) and a pump chamber ( 3, 4, 103, 104 ) associated with each working member is communicated via check valves ( 32 - 35, 132 - 135 ) to a suction manifold ( 30, 130 ) and to an outlet manifold ( 31, 131 ). A drive mechanism ( 10, 110 ) couples the working members so that they reciprocate together and a first of the working members performs an outlet stroke while a second of the working members performs a suction stroke. The suction and outlet manifolds ( 30, 130, 31, 131 ) are incorporated in a manifold assembly that connects the pair of diaphragms ( 1, 2, 101, 102 ) for coordinated reciprocation. A pair of manually-operated levers (J, 8, 107, 108 ) are connected together for opposite reciprocation and are drivingly connected to the working members ( 1, 2, 101, 102 ).</p> |
