| 摘要 |
A tile flood pump for attachment to a tile or drain pipe and pumping water from a field through the tile or drain pipe to a drainage ditch or canal. The tile flood pump is characterized by a pump housing fitted with a flange for removably bolting to the existing tile or pump embedded in a levee or dike separating the field from the drainage canal and an impeller housing enclosing one or more shaft-mounted, lower rotating impellers, the impeller housing typically having impeller housing flanges for access to the lower impeller(s) and extending into the pump housing in angular relationship for pumping water from the field through the impeller housing and the tile, into the ditch. A pump housing flapper valve or end plate can be provided on the intake end of the pump housing and when installed, the valve can be selectively opened and closed by a control rod mechanism to facilitate a flow of water by direct drainage through the pump housing and the tile into the ditch, or for pumping water through the impeller housing, the pump housing and the tile when the water in the field is at a higher level than the water in the ditch. A shaft housing also extends into the pump housing in alignment with the impeller housing for enclosing a drive shaft that mounts the lower impeller(s) and connects to an external drive system. A shaft housing extension is typically removably fitted into the shaft housing for enclosing an upper impeller designed to flood and cool the upper internal marine and load bearings which carry the rotating impeller shaft, upon which the upper impeller is mounted. The tile flood pump can be typically operated by means of a power take-off system on a tractor or by a diesel, gasoline powered or electric motor.
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