Submersible pump having float actuated valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 1, 2000
Issued Date -
N/A
app pub date -
Jun 4, 1999
filing date -
Nov 12, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A submersible pump is disclosed for use in a body of liquid such as a well or sump. The pump has an air intake port and an air outlet port, as well as a liquid intake port and a liquid discharge tube. A valve mounted within the pump selectively permits the pump's chamber to communicate with either the air intake port or the air discharge port. When liquid enters the pump's chamber, the air displaced by the incoming liquid is permitted by the valve to escape via the air outlet port. When the pump's chamber is sufficiently full of liquid, the valve closes off the air outlet port and permits compressed air to enter the pump's chamber via the air inlet port in order to force the accumulated liquid out the liquid discharge tube. A float in the pump's chamber rises and falls with the level of liquid in the chamber to actuate the valve. In one embodiment the valve comprises a movable member mounted for linear reciprocating movement within a valve housing to selectively bring a carried through-passage into fluidic communication with the appropriate air port. In a second embodiment, the valve comprises a movable member mounted for rotating reciprocating movement within a valve housing to selectively bring a carried through-passage into fluidic communication with the appropriate air port.
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