Page 27 - february

METALWORKING EQUIPMENT AND TOOLS
for dry sand, as well as in larger quantities
if the drum unit is used for green sands.
The drum casing with a water jacket of the
installation through the support system
3 with rollers is installed on the frame 4
and is driven into rotation (5 - 10 rpm) by
the drive 5. By changing the diameter and
length of the water jacket 8 and the inner
casing, as well as their inclination and speed
rotation, the cooling capacity of the molding
sand is obtained from 2 to 6 m3/h. There
is a drainage system to prevent water from
freezing.
In the sand regeneration lines, the
described installations are preceded by
a vibrating sieve, the developed design
of which is shown in Fig. 4. It consists of
the following parts: body 1 made of sheet
material, vibrodeck 2 with one or two mesh
sheets and an apron. An electric vibrator
dusty
gas
water
sludge
Fig. 5. The precipitant is liquid. 1 - water circulation system, 3 - pipe, 4 - body, 5 -
control tube, 6 - bottom part.
is installed on the vibrodeck 3. The deck has a
rear elastic support 4 and a front hinge 7. Below
the apron of the deck is a funnel 6, from which
sifted sand is fed. All of the above elements are
attached to the bed 5. The waste is discharged
along the tray 8 to the side. There are two holes
on top of the casing 1. Through the hole shown
on the left in Fig. 4, sand is fed to the mesh
deck cloths, and another hole (on the right) is
connected to the exhaust ventilation system
for suction of dust particles, which, due to the
deck vibration and the impact of sand particles
on the funnel, rise up and go into the suction
and sedimentation system. The cleaned sand
through the opening of the funnel 6 is poured
down into the container or into the receiving
opening of the next installation of the through-
line regeneration. The vibration amplitude and
force are regulated by the distribution (mutual
arrangement) of the vibrator unbalance weights.
A distinctive advantage of the shaker
sieve design is that, simultaneously
with the removal of large inclusions
from the sifted sand, ventilation is
purified carried out with the removal of the
dust-like component without entering
gas
the atmosphere of the workshop.
Stanochniy park 27