Liquid purification or separation – Flow – fluid pressure or material level – responsive – Check valve
Patent
1981-08-24
1983-03-22
Spitzer, Robert H.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Check valve
210241, 210355, 210409, 2104161, 2105122, B01D 2126
Patent
active
043774750
ABSTRACT:
In the case of an apparatus for sucking up and holding sludge, use is made of a sludge tank which may be evacuated. The sludge tank has a sludge door and a water outlet able to be put into operation separately from the door. The water outlet is made up of an overflow line joined up with water in the sludge tank by way of a filter unit, the filter unit having a cleaning unit with at least one nozzle for jetting water onto the filter unit. Continuous operation is made possible in that the water outlet may be put into operation using a low pressure pump placed between the end of the overflow line, the inlet end at the filter of the overflow line being at a higher level than the low pressure pump, and the inside cross-section of the pump inlet and the inside cross-section of the overflow line are, in each case, greater than the cross-sections, answering thereto, of a pump having atmospheric pressure acting on its inlet side otherwise of the same size and the cleaning unit is designed to be acted upon by filtered water coming from the low pressure pump.
REFERENCES:
patent: 1295056 (1919-02-01), Otterson
patent: 1331239 (1920-02-01), Cartwright
patent: 2010538 (1935-08-01), Evans
patent: 2240167 (1941-04-01), Adams
patent: 3013665 (1961-12-01), Schmidt et al.
patent: 3463172 (1969-08-01), Naylor
patent: 3840120 (1974-10-01), Greenberg
patent: 4310423 (1982-01-01), Brown et al.
Collard Allison C.
Galgano Thomas M.
Spitzer Robert H.
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