Description
Coriolis powdery
feeding system
Brief
Introduction:
FB-CMF Coriolis Powdery Feeder System is developed by our
company according to the principle of Coriolis. It is complete
measuring equipment for continuous feeding and measuring powdery
material. It is mainly used in coal feeding for kiln head and kiln
tail of cement plant and measurement for mixture of fly ash in
cement grinding plant, of course, the different technology stage
have different measurement system.
For fly ash, measurement by combining the
unidirectional screw gate valve + steady flow feeder + Coriolis
powdery flowmeter
For pulverized coal, measurement by combining the
unidirectional screw gate valve + steady flow feeder + Coriolis
powdery flowmeter + electric and pneumatic control valve
Structure:
1.All bearings inside the feeder are imported and the motor and
reducer are the products of SEW company;
2.Steady flow feeder is mainly used for steady the material flow
with structure of three-layer and mixing device to prevent material
arching and flushing in the silo and material rocketing out caused
by air pressure, the steady flow feeder can make the feeding
well-distributed, steady and reliable;
3.The system is inspected by Coriolis principle. The instantaneous
mass flow of the material is measured. It is the real flow meter
different from the chute-type flow meter and impact flow meter and
also different from loss-in-weight feeder, rotor weighfeeder and
ring-typed balance;
4.Steady and accuracy feeding is realized by adopting frequency
control of motor speed to ensure high accuracy and quick
responses;
5.As a pre-feeding device, steady flow feeder is mainly used in
powdery weighing system which requires a certain conveying pressure
and higher weighing accuracy (eg. kiln head and kiln tail of cement
plant for coal feeding);6.The pre-feeding instrument can also be
rotary vane feeder + electronic flow control valve + air chute in
normal pressure. The cost of this system is slightly low and is
widely used in fly ash weighing and conveying;
Working
principle:
The Core part for Coriolis powdery flow meter is measuring disc,
which is drived by the main axes. The material is flow into the
central measuring disc, and then threw out by revolving disc. The
material will give a force to the vane of the disc, the force is
called Coriolis force, the force is proportional to the material of
the mass, the material flow rate will be got after measuring the
force. In Coriolis powdery flow meter, the measured force is
torques which caused by the driving axes on measuring disc. Due to
the radius of disc is fixed, the Coriolis force will be calculated
when measuring the torques, at the same time, the material
instantaneous flow rate also can be got indirectly. There is no
influence on the measurement result for friction between material
particles and measuring disc, as well as the friction among the
material layer caused by different speed, to ensure the precision
of the system.
