Hydro Extractor:
Hydro-Extractors are also called
Centrifuges. Centrifuges are used for water extraction (dewatering, pre-drying)
of textile materials. Values of approx. 15% for residual moisture content can
be achieved depending on the type of textile fiber. Centrifuges
with perforated drums or baskets (Ø up to approx. 2000 mm) which oscillate
vertically in ball-and-socket joints suspended on three points are produced in
various designs as pendulating, suspension, cage and vertical centrifuges, also
with so called gliding support bearings as gliding support centrifuges or in
horizontal resp. vertical arrangements as open-width, horizontal and warp-beam
centrifuges, etc. Most centrifuges have electric drives for speeds of approx.
750–1200 rpm and are generally provided with automatic control over various
ranges. For safety reasons, an interlocking lid is essential on a centrifuge so
that the motor cannot be started until the lid is locked, nor the lid raised
until the basket is stationary again after the machine has been stopped.
Hydro Extractor
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When used for dewatering loose stock,
the cake of loose fibers is transferred from the dyeing machine to the
centrifuge and hydro-extracted before it is run into the fiber opener as a
preliminary stage of drying in a perforated drum drier. If an immersion
centrifuge is used, impregnation of the loose fibers with a spinning lubricant
is also possible. In this case, the material is loaded into the centrifuge,
liquor is then pumped in (until it covers the material), and the goods are
finally hydro-extracted. The advantage of such a procedure lies in the fact that
a separate treatment of the textile material in an impregnation vat and the
reloading of wet goods into the centrifuge are eliminated . Impregnation of
textile material in the impregnation basket of a centrifuge is generally
quicker and more effective for all processes than in a vat. The centrifugal
force which drives the liquor through the goods during centrifuging accelerates
penetration. It is possible to carry out several processes one after the other
in an immersion centrifuge. In this case, however, separate drain channels and
liquor tanks must be provided. The basket of an immersion centrifuge has an
outer casing without perforations which surrounds the cylindrical basket of a
normal centrifuge (extended conically at the top). By this means, it is
possible to fill it with liquor to the level of the upper rim. Only when the
basket is set in motion does the liquor, which is driven outwards by
centrifugal force, rise up the basket casing and run over the upper rim. Loose
fiber material (loose stock) can also be centrifuged continuously. For the
dewatering of yarn packages, other possible options besides the asymmetrical
dewatering of columns of yarn packages in suitably shaped compartments of the
centrifuge include symmetrical dewatering by the rotation of individual
packages or columns of yarn packages which involves less risk of package
deformation.
Technical Data:
- Working width 1300mm
- Machine speed 5~30M/min
- Machine for the hydro extractor, softener, air ballooning type of cotton knitted tubular fabrics without tension, with fabrics entwisting, air balloon, control of the squeezing pressure and control of the final width of the fabric.
- Automatic control of the feeding without tension, no edge mark, final folding without stretching. Versions with simple or double squeezing and imbuing with softeners.
Advantages of
Hydro Extractor:
- No deformation of the packages.
- Excellent rewinding properties. Rewinding can even be eliminated in a lot of cases.
- Low residual moisture.
- Even humidity distribution through the package.
- Low energy consumption.
- Dyeing tubes last longer.
- Processes many different size packages.
- Operator of centrifuge can also load dryer.
- Maintenance-free brakes.
- Closed system for effluent.
- Low compressed air consumption.
- Significant energy savings.
