Electric diaphragm pump with offset slider crank

A diaphragm pump has a crankshaft that is rotatable about a rotational axis and coupled to a piston. The piston is reciprocally displaceable within a piston cylinder along an axis of motion between suction and discharge strokes. A diaphragm housing coupled to the piston cylinder at least partially defines a pumping chamber through which fluid is pumped as the piston reciprocates. The axis of motion, which intersects a connection between the piston and the connecting rod, may not intersect the rotational axis of the crankshaft such that, relative to an arrangement in which the axis of motion does intersect the rotational axis, a peak magnitude of piston side load forces during the discharge stroke is reduced and a peak magnitude of piston side load forces during the suction stroke is increased so as to attain an improved balance between the peak magnitudes of piston side load forces of the discharge and suction strokes. 一种隔膜泵，其具有能够围绕旋转轴线旋转并联接于活塞的曲轴。活塞能够在吸入冲程和排出冲程之间在活塞缸内沿着运动轴线往复地移位。联接于活塞缸的隔膜壳体至少部分地限定泵送腔室，在活塞往复运