Gas and liquid contact apparatus – Contact devices – Rotating
Patent
1986-02-19
1988-01-19
Miles, Tim
Gas and liquid contact apparatus
Contact devices
Rotating
B01F 304
Patent
active
047203617
ABSTRACT:
The object of the present invention is to protect the driver unit (1) of an immersible aerator and/or mixer apparatus against the surrounding liquid. The driver unit (1) is covered with a compact protective casing (5), to the bottom part whereof the gas to be lead into the mixer (14) is conducted through the gas supply pipe (2). At the junction of the gas supply pipe (2), inside the protective casing (5), there is located a gas supply channel (6) which is open at both ends, and this gas supply channel (6) conducts the gas to flow mainly upwards, to the top part of the driver unit. At its bottom, the protective casing (5) is attached to the base disc (7), and the gas flows through the holes (10) provided in the base disc (7) into the channel formed by the gas control cone (11) and the inner cone (12), and therefrom into the liquid either via the partly hollow secondary axis (13) of the mixer or via a separate gas pipe. During an interruption in the gas supply, the inner cone (12) forms a gas lock which protects the top end of the secondary axis, and the roughly 90.degree. angle in the gas supply pipe (2) forms a gas lock which protects the motor.
REFERENCES:
patent: 3053390 (1962-09-01), Wood
patent: 3189334 (1965-06-01), Bell
patent: 3279768 (1966-10-01), Niewiarowicz
patent: 3305215 (1967-02-01), Swiecicki et al.
patent: 3796417 (1974-03-01), Kaelin
patent: 3891729 (1975-06-01), Ebner
patent: 4078026 (1978-03-01), Fallenius
patent: 4540290 (1985-09-01), Jarvinen et al.
Miles Tim
Outokumpu Oy
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