Cleaning and liquid contact with solids – Apparatus – Combined or convertible
Patent
1975-10-22
1977-04-12
Cline, William R.
Cleaning and liquid contact with solids
Apparatus
Combined or convertible
134191, 417406, 137565, F04B 1700, B08B 300
Patent
active
040168930
ABSTRACT:
This liquid recirculation system is particularly suitable for flammable solvents since the liquid is pumped by an air powered pump. The system has a solvent tank with a sink mounted on top of it for drainage into the tank. A centrifugal liquid pump is immersed below the liquid level in the tank for pumping liquid to a spout over the sink. A centrifugal air turbine is mounted above the liquid level for driving the pump. The liquid pump and air turbine have identical housings at opposite ends of a tubular housing. A drive shaft mounted in bushings or bearings at the ends of the tubular housing connects impellers in the turbine and pump. Each impeller is a flat disk with a plurality of flat upstanding blades with a substantially larger number of blades on the turbine impeller than on the pump impeller. Air enters the turbine tangentially and is discharged through an outlet on the top of the turbine. Liquid enters the pump through an opening on the bottom of the pump and is discharged through a tangential outlet extending in the same sense of rotation as the air inlet on the turbine.
REFERENCES:
patent: 1434800 (1922-11-01), Tucker
patent: 1664488 (1928-04-01), Schellens
patent: 2020956 (1935-11-01), Norling
patent: 3352310 (1967-11-01), Boyscher
patent: 3759290 (1973-09-01), D'Alba
patent: 3794448 (1974-02-01), Albertson
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