Fluid pump driving control

A fluid pumping and control system for maintaining the liquid level at or below a predetermined level comprising:

• a wet well for receiving liquid;
• an air pressure transducer;
• an air conduit coupled at one end to said air pressure transducer and its opposite open end into fluid disposed within said wet well;
• an air pressure source connected to said air conduit line for providing air pressure within said line;
• a rheostat mechanically connected to the output of said pressure transducer and adjustable proportionally to changes in said pressure transducer;
• an electrical circuit having said rheostat electrically coupled thereto;
• a voltage supply connected within said electrical circuit;
• a swash plate variable volume hydraulic pump;
• a hydraulic motor in fluid communication with said hydraulic pump, the output of said hydraulic pump connected to drive said hydraulic motor;
• a constant speed electric motor connected to drive said hydraulic pump;
• a variable volume output liquid pump having a driven shaft connected to the output driving shaft of said hydraulic motor;
• a fluid conduit connected at one end to said wet well to receive fluids contained therein having at opposite end connected as the input of said liquid pump;
• an output fluid line connected to outlet section of said liquid pump;
• and
• an electro-mechanical transducer coupled to said electrical circuit and to the swash plate of said hydraulic pump, said voltage in said electrical circuit proportionally controlling the angle of said swash plate to provide a variable volume output from said hydraulic pump, whereby the fluid level of said wet well will be kept at a predetermined or below level by varying the volume output of said liquid pump.