Pumps – Motor driven – Fluid motor
Patent
1981-07-06
1983-02-15
Smith, Leonard E.
Pumps
Motor driven
Fluid motor
91 40, 91449, F04B 1700
Patent
active
043738745
ABSTRACT:
A pump system includes a source of fluid under pressure conveyed into a fluid chamber containing meshing gears which are rotated by the pressurized fluid to, in turn, transmit rotation to a unitary valve member positioned in a housing. Rotation of the gears also displaces fluid at a preselected flow rate through an inlet port of the housing and into a first inlet port of the rotary valve member. During the first one half cycle of rotation of the rotary valve member, fluid is conveyed through a first set of aligned outlet ports of the valve member and the valve housing to a water pump for displacing a water piston. The water piston is displaced to convey water through a first conduit. During the second one half cycle of rotation of the rotary valve member, fluid is conveyed through a second set of aligned outlet ports of the valve member and the valve housing to displace the water piston in an opposite direction to convey water through a second conduit. By continuously rotating the unitary valve member, fluid under pressure is alternately supplied to inlet ports of the water pump to reciprocate the water piston. For the first and second conduits having nozzle end portions, this arrangement generates a continuous spray which is adaptable in underground mining operations to suppress the circulation of dust in the mine atmosphere by directing the water spray upon the mine face as the mine material is being dislodged.
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Adams John M.
Price, Jr,. Stanley J.
Smith Leonard E.
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