Solids ejecting centrifuge0 pages

Solids ejecting centrifuge
Culturefuge 100
Many new biological products are derived from fragile organisms.
Although relatively easy to separate the trick is accomplishing
the separation in a gentle manner without destroying
the shear sensitive cell wall membranes that isolate the
complex intracellular proteins from the extracellular liquid. If
this can be avoided, downstream purification of the target
proteins becomes much easier.
Applications
The machine is designed for clarification duty. Especially when
clarifying liquids from shear sensitive particles. Applications
that requires low oxygen pick-up can also take advantage of
the hermetic features this machine offers.
Fig. 1 Culturefuge 100 centrifuge
Standard design
The machine consists of a frame that has a horizontal drive
shaft, worm gear, lubricating oil bath and hollow vertical
bowl spindle in the lower part. The bowl is mounted on top
of the spindle, inside the space formed by the upper part
of the frame, the ring solids cover, the collecting cover, and
the frame hood. The liquid discharge system also rests on
this structure. All parts in contact with the process liquid
are made of stainless steel. The bowl is of the solids-ejecting
disc type with an automatic hydraulic operating system
for discharging. It is a so-called timer triggered partial discharge
system, meaning that only part of the bowl content
is emptied during pre-set discharge intervals. The discharge
takes place at full speed without any interruption of the feed.
The centrifuge is available with main connections as sanitary
flanges and all other utility connections clamp type. The
electric motor is of standard type and has a built-in variable
frequency drive. The design conforms with a number
of EC directives, and machine is made in accordance with
the general directives for machinery. Finally, the centrifuge is
equipped with nozzles for flushing of the bowl top, the bowl
bottom and the cyclone.
Standard equipment
Each Culturefuge 100 centrifuge comes with control unit,
electric motor, in- and outlet connections, spare parts kit and
set of tools.
Material data
Bowl body, hood and lock ring s.s. 1.4462 UNS S31803
Solids cover and frame hood s.s. ASME SA-240 UNS 31603
Cyclone s.s. ASME SA-240 UNS 31603
Bottom frame Cast grey iron
In and outlet s.s. mostly 1.4401 UNS 31600
Gaskets and O-rings EPDM rubber (FDA approved)