for yarn in hank MNC-81
MNC type drier is suitable for all types of yarn on the hank.
The main advantages of the machine are:
of pre-hydroextraction by centrifuge and relative saving of both
capital and manpower expenses. Other saving are also achived in
terms of electrical power consumption and maintenance
reduction in handling of the hanks giving reduced tangling and
subsequent greater efficiency in hank to cone winding
drying to accurate required residual moisture
of "roundness" of yarn thus improving appearance and
"handle" of the yarn.
sequence of operation is as follows: hanks are stored on accumulation
chains, hanging out from both hank dye poles which serve to open
the fold in the hank to improve air flow.
Each pair of hank poles is selected automatically and the complete
row of hanks is introduced into the open squeeze nip of a hydroextraction
mangle. Once the hank poles have passed between the bowls of the
mangle, the upper bowl automatically lowers and closes the squeeze
this operation approx 3/4 of each hank is squeezed.
squeezed hanks then enter a pre-drying chamber comprising one or
more sections. On exit from the predrier the hank is automatically
turned by a 3 step revolving device in order to re-position the
non-squeezed portion of the hank into a vertical plane.
hanks are then passed through a final drying chamber and delivered
automatically onto a storage trolley. When this trolley is full
it can be easily replaced without stopping the drier. These trollies
can be used for hank transport purposes within the factory thus
achieving drastic reductions in handling and consequent downtime
between operations as experienced using traditional methods.
The drier can be heated by various means i.e. steam, therminal fluid,
high temperature hot water and it is equipped with easy access stainless
steel mesh filters which in turn are easy to remove and clean.
first photograph shows a large steam heated 4-section drier. The
following photo shows the exit side of the drier with the accumulation
trollies for dried hanks and the final collection carriage following
removal of hank poles.
other pictures show:
Inlet side with accumulation device of capacity up to 20 rows of
hanks and automatic feeding device to the squeeze rollers.
hank reel length
hank reel length
length hank pole
length hank pole
of hank pole
- 78 mm
of one row of dried hanks
- 6 Kg
mangle: shown in the photo with squeeze pressure adjustable from
This gives flexibility to provide an efficient hydroextraction for
a wide variety of yarn types and counts.
showing detail of the air filtration system comprising 6 filter
screens, 3 on each side of the drier.
In this particular photograph the central filter has just been cleaned
and the other 2 are still contaminated with lint.
intermediate hank turning device operates by repositioning the trailing
hank pole in front of the leading pole thus causing the hank to
rotate a distance equivalent to the distance between the 2 poles.
This operation takes place 3 times in order to move the "non-squeezed"
portion of the hank into the vertical position and optimize the
thermal heat exchange between the hot air and the moist yarn.
the picture above:
cross section on the top of the drying chamber and connected to
motors through a self-cooling coupling. Heat exchangers and air
filters are mounted at each side of the drying chamber and readily
accessible for cleaning and maintenance operations.
Longitudinal section of a single chamber MNC/81. It shows the position
of the heat exchangers and the path of the circulating air which
is uniformly conveyed onto the hanks.
Air is blown from above downwards to avoid any yarn entaglement.
Horizontal section of a 2 chamber MNC/81.
Side view of the same machine comprising inlet unit with accumulator
device, final drying chamber, outlet unit with storage trolley for
request, the machine can be equipped with two inlet squeezing
padders, with a hank revolving device in-between.
Through this unit the whole hank is squeezed, thus saving power
and improving product quality and drying performance. The double
squeezer is particularly suitable for cotton yarn or blends.