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Looking for a used centrifuge, pharmaceutical centrifuge, laboratory centrifuge, high speed centrifuge, centrifugal separator or other piece of process equipment? We can help. Our home page provides a listing of current inventory and our staff members are eager to assist you.
Lavin Centrifuge produces industrial centrifuges, including basket centrifuges, high speed centrifuges & mini laboratory centrifuges for the reclaiming of metalworking liquids, recovering particulates, heat treating liquids & optics liquids. In business since 1945, and a division of AML Industries.
Sanborn Technologies is a leader in designing, engineering & manufacturing of high-quality centrifuge products & centrifuge equipment to serve industries by improving quality, reducing downtime & minimizing waste & disposal costs. Products include both industrial centrifuges & centrifugal separators.
Centrifuge Technology specializes in centrifuge repair for centrifuges, used centrifuge equipment & hydraulic back drive systems. We offer high speed centrifuge parts for commercial & environmental applications. Our technicians have more than 20 years experience in centrifuge repair & services.
Over 70 years of providing new, used and reconditioned process equipment. We offer thousands of in stock centrifuges, including basket, decanter, disc automatic & lab centrifuges, plus centrifuge parts, etc. Known worldwide for quality, integrity, dependable service and competitive prices.
A centrifuge is most often used for the separation
of particles from solutions according to their size, shape, density,
viscosity of the medium and rotor speed. These centrifuges machines utilize
the natural separation realities present in a high speed circular G-force
environment. Like a high powered clothes dryer, these exceedingly fast
machines spin in order to separate materials from one another. The denser
materials separate from the less dense during the centrifugation process.
This is helpful for the cleaning and separating of slurries which are
present in many industries. The dairy industry uses centrifuges to separate
milk from whey, and the food and beverage industry uses them for the
washing of edible oils and the clarification of wine and juices.
Centrifuges vary in size and power depending on the substances involved
in the process. Some centrifuges are able to run continuously, feeding
in slurry to be separated and sending the divided substances through
to outside chambers to be removed. Sometimes centrifuges are used as
a step in a larger filtering
process or system. Basket
centrifuges work by a process in which
the liquid/solid slurry is fed into the rotating basket with a filtering
cloth on the slotted jacket. The liquid passes the cloth and solid is
left on the basket walls. When the basket is then full of material,
the machine speed is decreased and the solid is scraped from the walls
of the machine. The washing and cleaning of metal parts can also take
place inside of what are considered industrial
centrifuges, as washers
are put in a bath of cleaning solvent and then run at g-force speeds,
both cleaning and separating the excess grime and sludge from the metal.
The dairy, wine, beverage, and edible oil and fat industries also use
industrial centrifuges for the degumming and purification of their respective
products. Power and wastewater plants use centrifuges for the separation
and cleansing of fuels and lubricants.
The industrial sectors of society, such as wastewater treatment plants,
use centrifuges extensively for the clarification of wastewater. Power
plants use them for the purification of fuel and lubricants as well
as for the cleansing of metal parts, using the centrifuges like a washing
machine of sorts. The primary use of a centrifuge is done by the chemical,
biotechnical and pharmaceutical sectors of society. They use small laboratory
centrifuges for the analyzing of proteins and drugs, and they use larger
centrifuges for the purification of solvents and the concentration of
other biomasses.
Many of the manufacturers of centrifuges specialize in one type, e.g.
laboratory or industrial, yet others do design a wider range of types.
Custom work with the manufacturer is possible in order to achieve best
results. The manufacturer will work with the customer to build proper
centrifuges for his or her needs, based on the materials, the volume
and feed rates necessary and any cost limits. Many shops also deal in
the distribution and maintenance of used centrifuges units. These may
be a more cost effective way of purchasing a new or old centrifuge beyond
repair capabilities.
Centrifuges and
Centrifuge Images Provided by Perry
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Types of Centrifuges
Basket
centrifuges
are the basic type of filtering centrifuge, and consist of a basket
rotating around the vertical axis.
Continuous
centrifuges
operate non-stop during a separation process, and generally contain
intake and output channels to prevent buildup and ensure proper separation.
Continuous centrifuges are often used in water treatment plants.
Disk centrifuges
are used primarily for separating two liquid phases, but are also suitable
for clarifying if the solid material content in liquids is small.
High speed centrifuges accelerate quickly and can be used for fast extraction, washing, and separation purposes.
Industrial
centrifuges
are wide ranging in styles and are used for the separation of larger
volumes of liquid/solid from one another.
Laboratory centrifuges
are an apparatus used in the laboratory for separating substances of
different density or particle size, when suspended in a fluid, by spinning
them about an axis in a suitable container. Used in biotechnology and
other chemical industry labs.
Mini centrifuges
are used for the separation of small samples in a laboratory setting,
which includes the separation of DNA, RNA and proteins that need isolation.
Mini centrifuges are sometimes referred to as a bench top centrifuge.
Pharmaceutical centrifuges
are used for the sterile processing of drugs and the separation of other
fine chemicals in the pharmaceutical industry. A type of lab centrifuge
which deals with drugs only.
Ultracentrifuges
are a high speed centrifuge used to determine the relative molecular
masses of large molecules in high polymers and proteins. These can be
very dangerous if maintenance is not performed regularly because of
the high speeds it reaches.
Centrifuges Terms
Beach – In
a bowl centrifuge, the dewatering part of the bowl. It is conical in shape.
Bowl – The area of a bowl centrifuge
which rotates and separated solids collect.
Bowl Strips – Small thin strips
of metal or other material attached to the inside diameter of the bowl
used to help the settled solids convey out of the machine and to protect
the inside diameter of the bowl from wear by locking in a layer of settled
solids.
Cake Slids – The dryness or
wetness of the discharged solids (solids phase). Usually measured as percent
(%) by weight.
Centrate – The liquid (light
phase) which is separated from the heavy solids (heavy phase) during the
classification/clarification process, then exits through the effluent
head. Centrate is also referred to as "mother liquor," "effluent"
and "overflow."
Centrifugal Force – An outward
force on a body rotating about an axis, assumed equal and opposite to
the centripetal force and postulated to account for the phenomena seen
by an observer in the rotating body.
Chatter Torque – This type of
torque is generated by settled solids, resisting conveyance.
Clarification – Clearing action
that occurs during wastewater treatment when solids settle out. This is
often aided by centrifugal action and chemically induced coagulation in
wastewater.
Conveyance Speed – Speed at
which the settled solids are moved along the bowl walls and removed from
the bowl.
Density – Measured in grams
per cubic centimeter (or kilograms per liter); the density of water is
1.0, iron is 7.9 and lead is 11.3.
Dry Beach Area – This area de-waters
the solids and allows liquid to drain back into the pool and not be discharged
with the cake solids.
Gradient Centrifugation – Separates
particles on the basis of their buoyant densities. A gradient range is
selected to encompass the densities of all particles to be banded.
Heel – Layer of compacted solids
on the inside diameter of the bowl. This layer is not conveyed out and
settled solids removed by the conveyor are conveyed over this heel.
Main Bearing – The frictionless
central bearing on which the bowl is supported and rotates upon.
Pillow Block – Term used to
describe the central housing holding the main bearing.
Sedimentation – The process
where solids suspended in water settle to the bottom of a basin.
Separation – This process divides
or separates a mixture of particles or liquids into separate components.
Slurry – Pourable mixture of
solid and liquid.
Supernatant – The liquid in
a centrifuge tube above a pellet or sediment, after centrifugation.
Tube Size – The length of a
centrifuge tube, often given in both inches and millimeters.
