AAC pouring mixer Concrete Mixing Plant / AAC Block Making Machine
/ AAC Block
The pouring mixer (see attached drawing) is a mixing machine fixed
on top of the block mould whose function is to mix the materials
thoroughly before pouring so that they can be made into autoclave
aerated concrete blocks.
2. Major technical specifications
a) Maximum overall dimensions:
2200 mm (length) × 2200 mm (width) × 3406 mm (height) (pouring arm
b)Mass: 2927.6 kg
Power: 22 kW
Speed: 730 rpm
d)Volume of the cylinder: V = 4 m3
e)Mode of mixing: spiral type
f)Mixing speed: 451 rpm
g)Pneumatic butterfly valve: D671J-10-200
The pouring mixer is composed of two units: mixing cylinder and
a) The mixing cylinder is cylindrical in shape. It is made up of
the following components: electric motor, mixing shaft, mixing
blades and diversion tube.
b)The pouring arm has a rigid (or flexible) structure. The charging
port of the rigid pouring arm takes the form of two arms and the
charging is controlled by a pneumatic butterfly valve.
a) The pouring mixer works on the principle of diversion-type
mixing. Its mixing is rapid and even. It is driven by a motor,
which rotates in a clockwise direction, driving the mixing shaft
and the mixing blades into rotation. Thus the materials will be
tumbled up and down in the cylinder and the diversion tube. Hence
the purpose of mixing and diversion is achieved.
b) The pouring arm is mounted on top of the mould. When the
materials are mixed to the acceptable extent, the butterfly valve
will be opened so that the materials are fed into the pouring arm
and poured into the block mould.
a) Put the mixing cylinder levelly on the prepared foundation and
put a rubber pad between the contacting surfaces.
b) Fix the pouring arm under the charging port of the mixing
cylinder. The pneumatic butterfly valve should be assembled in
between. The pouring direction, which is determined by the
technological requirement, should be adjusted on site.
6. Trial running and adjustment
a)The following parts should be adjusted after assembly is
i. The rubber belt of the motor should be stretched tight.
ii.The gland cover of the mixing shaft should be tightened so that
a perfect sealing of the plastics is formed.
iii.The pouring arm should be arranged according to the
technological requirement. The pouring port should be adjusted.
b) Trial running
i. The motor should rotate normally in the clockwise direction.
ii. The mixing cylinder should work stably.
iii. The mixing shaft should rotate freely without jamming or
iv. The pneumatic butterfly valve should be very sensible in
opening and closing.
v.Adjust a suitable distance between the diversion tube and the
underside of the pouring mixer (the common distance is between
a) Daily care:
The mixing cylinder, mixing shaft and pouring arm should be cleaned
once a week. Before cleaning, the gland cover of the mixing shaft
should be tightened so that a perfect sealing of the plastics is
formed. All the bearings should be filled up and should be
re-filled every six months.
The pouring port, the pneumatic butterfly valve and the seals of
the pipelines should be taken down and cleaned once a month.
Packing of the mixing shaft and worn parts should be replaced.
a) Do not allow anybody to stand on top of the mixing cylinder and
in the vicinity of the pouring arm in the process of pouring.
b) Remove all splattered materials completely at the end of each