Pumps – One fluid pumped by contact or entrainment with another – Aerated column
Patent
1994-04-15
1995-01-17
Bertsch, Richard A.
Pumps
One fluid pumped by contact or entrainment with another
Aerated column
417109, F04F 118
Patent
active
053821378
ABSTRACT:
A multiple stage airlift pump apparatus for elevating water or other liquids using only a single air pressure source. The functioning portion of the airlift mechanism is enclosed within a casing which is submerged into a body of water. The casing is connected to a pump via an air line and fitting so that air is forced into the casing and the working portion of the invention. The lift is comprised of a plurality tubular stage members being connected at their upper ends to a nozzle-type member. Each tubular stage member other than the initial one has an inner tubular separating member therein which functions to separate air and water and store the same at the next stage. The inner tubular separating member for each stage member is positioned within the same and is securely connected thereto. The separating members are opened at a lower end which encompasses the nose of the nozzle member and are closed at the upper end. Water is moved upwardly via the air bubbles formed therein, through the nozzles and upwardly into the separating members. Within the separating members, the water is separated from the air and falls downwardly becoming stored in the passageway between the separating member and the tubular stage member. The air pressure builds within the separating members and thereby exits the same, entering the water stored in the passageway. The process then repeats with the air bubbling through the water in the passageway and moving the same upward and into the next nozzle and separating members.
REFERENCES:
patent: 1339137 (1920-05-01), Rogers
patent: 1374952 (1921-04-01), Rogers
patent: 1491822 (1924-04-01), Rogers
patent: 2744065 (1956-05-01), Lacey
patent: 3289609 (1966-12-01), Palo
patent: 3718407 (1973-02-01), Newbrough
patent: 4671741 (1987-06-01), Baumberg
Bertsch Richard A.
Kocharov M.
Lehrer Norman E.
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