| 摘要 |
A water powered sump pump (20) that utilizes a relatively higher pressure water ported through a self reversing valve to a reversible stroke power cylinder having a movable member mechanically coupled to a pumping chamber f or movement of a movable pumping member in the pumping chamber, movement of the movable pumping member forcing sump water to a discharge. The self powered sump powered sump pump (20) comprises a drive chamber (21), a power cylinder (22), a pump chamber (24), a pump cylinder (25) and a self reversing valve (65). The volumes of the power cylinder and pumping chamber are different su ch that relatively high pressure, low volume flow to the power cylinder results in relatively high volume, low pressure flow from the sump-pumping chamber. The discharge from the power cylinder is backflow prevented with respect to the discharge from the sump-pumping chamber.
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