Wellpoint pumping system
Patent
·
OSTI ID:6779366
This patent describes a wellpoint pumping system. It comprises: a frame, a positive displacement rotary pump capable of pumping air, water or a mixture thereof mounted upon the frame, the pump having two rotors with intermeshing lobes mounted for counter rotation upon substantially horizontal and parallel shafts. The pump having an inlet port located blow the rotors opening downwardly and an outlet port located above the rotors opening upwardly, a motor for driving the rotors mounted upon the frame, means for coupling the motor to at least one of the rotor shafts to drive at least one of the rotor shafts, means forming a closed air-tight inlet reservoir in the frame below the pump, an outlet reservoir mounted on the frame at a level above the inlet reservoir, an outlet reservoir mounted on the frame at a level above the inlet reservoir, an exhaust conduit for the outlet reservoir, conduit means; water recirculation means; and an adjustable recirculation control valve.
- Assignee:
- NOV; NOV-90-018035; EDB-90-106264
- Patent Number(s):
- A; US 4913629
- Application Number:
- PPN: US 7-236946A
- OSTI ID:
- 6779366
- Country of Publication:
- United States
- Language:
- English
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