Hydraulic ram pumps
AssigneePeppermint Springs Pty Ltd
InventorIan J. Richards
Life of this patent
Estimating the term…
Abstract
Hydraulic ram pump apparatus is provided, of the type including a body member (7) having a water flow passage therethrough, a waste gate (1) disposed in the passage, a delivery outlet (23) and a one-way delivery valve (10, 11) disposed in the outlet. The improvement therein lies in the waste gate (1) being pivotally mounted to the body member (7) and configured such that, in its fully open position (1a), the waste gate (1) does not significantly restrict the flow of water through said passage, in the interest of efficiency at low drive heads. The waste gate (1) is spring biased towards its open position to provide opening assistance to the waste gate (1) at low drive heads. The spring bias is such that it is at its greatest when the waste gate (1) is fully closed and is substantially zero when the waste gate is fully open.
Claims11
A hydraulic ram pump apparatus comprising:
- a body member having a water flow passage therethrough;
- a waste gate pivotally mounted in said flow passage and being movable between an open position wherein said waste gate resides in a recess disposed in said body member and water may flow past said waste gate and a closed position wherein said waste gate substantially closes said flow passage, said waste gate being biased away from said closed position such that said bias is greatest when said waste gate is closed and said bias is substantially non-existent when said waste gate is open;
- a waste water outlet downstream of said waste gate;
- and
- a delivery outlet having an adjustable non-return valve therein and located upstream of said waste gate, said non-return valve is adjustable to optimize the pumping efficiency through the valve.
A hydraulic ram pump apparatus comprising:
- a body member having a water flow passage therethrough;
- a waste gate pivotally mounted in said flow passage and being movable between an open position wherein said waste gate resides in a recess disposed in said body member and water may flow past said waste gate, and a closed position wherein said waste gate substantially closes said flow passage;
- a delivery outlet having an adjustable non-return valve therein and located upstream of said waste gate, said non-return valve is adjustable to optimize the pumping efficiency through the valve;
- and
- a waste water outlet downstream of said waste gate, said waste gate being biased away from said closed position by a spring acting between said body member and said waste gate, said spring providing an opening bias which is greatest when said waste gate is closed, and said opening bias is substantially non-existent when said waste gate is open, said spring further providing a closing bias when said waste gate is fully open to assist in the initiation of closure of said waste gate.
Dependencies are inferred from the claim text.