drier (for backwashed tops)
ALEA drum drier is an integral part of the backwashing machine for
tops. The complete line, backwashing machine + drier + take-up unit
ensures a thorough scour at high working speed, whilst avoiding
any damage to the tops. Hence a first-class quality top is assured
after process. The drier can process 36 tops of weight 20 to 25
g/m with speed varying from 2-11 m/min depending on fibre type and
drying temperature. The ALEA drier is sized according to required
capacity. A 2 drum drier is available with drum diameter from 1500
up to 1800 mm or the 3 and 4 drum driers with standard 1800 mm diameter
procedure is very simple. The tops are squeezed after backwashing
and passed round the perforated drums. Hot air is then drawn through
the top by an air circulation system which draws air from outside
to inside the perforated drum. The circulation system is equipped
with filters units to remove lint. Dried tops are then delivered
from the last drum into packages or cans according to requirements.
and temperature can be adjusted within a wide range and automatically
kept and fixed values. A louvre controls air quantity which is continously
exhausted to keep moisture at the required rate.
picture shows the outlet side of a two-drum drier, 1800 mm diameter,
with take-up unit for 36 tops. In the other picture is shown the
same machine seen from the inlet side.
above is shown:
- machine internal view from the inlet side. Notice the ingoing
tops, the idle roll, the lower drum covered with material and the
upper one with perforated surface
- lower drum with 1800 mm diameter with the two side filters
- detail of outlet with idle rolls and dividing comb of the take-up
sheet of a complete plant comprising feed unit, backwashing machine,
two-drum drier and take-up unit.
Sketch of a two-drum machine.
Sketch of a three-drum machine.
Sketch of a four-drum machine.