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(11) | EP 0 447 742 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Decanter centrifuge |
(57) A decanter centrifuge used for solid-liquid separation of a feed solution containing
suspended solids. According to a preferred embodiment, plural number of clarified
liquid discharge ports (4) are formed on a bowl-head (3) of a rotating bowl (1). On
the other hand, a ring-shaped weir (5) is mounted on the bowl-head (3), coaxially
has a ring-shaped overflow cavity communicating with each liquid discharge port (4)
and is provided with a peripheral opening directing the rotative axis of the bowl-head.
Additionally, plural number of reducing blades (6) are provided in the ring-shaped
overflow cavity in a radial form from the rotative axis of the bowl-head. Then, the
cavity is divided into plural number of portions while each reducing blade (6) is
fixed to the inner face of the ring-shaped weir (5). Due to the reducing blades, appropriate
quantity of the clarified liquid is overflown. |