Description
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.
Function Characteristics:
1. The system adopts
the following structure: EB-DAC***0 control system, namely
PLC+touch screen or intelligent instrument.
2. It is a set of system that can realize continuous feeding and
weighing.
3. Reasonable structure, convenient maintenance and reliable
operation.
4. Automatically measure system zero and calculate calibration
factor.
5. Friendly touch screen operating interference makes the operation
simple, and the control process and system statue can be displayed
on-line.
6. Special parameter table is set to make the system operate in
best conditions, and the centralized and local switching can be
realized in screen.
7. The system has the display function of shift accumulation, daily
accumulation and total accumulation.
8. Torque detection adopts customized dynamic torque sensor
9. The system has the function of self-diagnosis and can be
connected to DSC system.
*0. The system adopts integrated framework, vertically fix dynamic
torque sensor, assemble precision, stable running.
Parameter:
Weighing Range: 3~**0M3 / h
Weighing Accuracy: ±0.5%
