Tape-style weighfeeder structural characteristics and principle parameters introduced
ST Series tape type quantitative feeder, dedicated to the cement, metallurgy, chemical, electric power and other industries continuous weighing ingredients, you can run on a
variety of bulk materials for accurate weighing and variable speed to precisely control feeding amount.
1. Equipment components
ST Series tape-style dosing machine mainly by:
(1) including tape feeder conveyor frame, no interfaces annular skirt belt, motor, speed reducer Direct-coupled, by the hopper.
(2) electronic weighing devices, including ST2105 weighing controller, weighing sensor, speed sensor ,10-30 full suspension scale aircraft.Telescopic belt conveyor
(3) electrical control system, including inverter, instrument control cabinet, DCS interfaces, protection and alarm circuits.
2 System Works
After the feeder belt of the material, by weight of the weighing scale frame detected to determine the material on the tape kilograms weight per meter; mounted on the tail
pulley digital speed sensor, continuous measurement of the tape speed, the speed sensor pulses output proportional to the tape speed; speed
Signal is fed together with the weight signal belt weigher control instruments, instrument microprocessor to accumulate processing, generating and displaying the cumulative
amount / instantaneous flow. The flow rate is compared with the set flow rate, controlled by the output signal of the inverter control instrumentation, enabling dosing
3. Equipment characteristics and technical parametersmaterial handling conveyor
(1) U-shaped feeder beam as the main support frame, using the channel as the legs, the overall stiffness, good stability. Both sides of the main support frame against the belt
deviation device, within certain limits to prevent the belt deviation.
(2) The new scale body design makes replacement of the belt of heavy work becomes simple and fast.
(3) In order to prevent wandering, active cylinder with herringbone, with correction function.
(4) has a driven roller screw tensioning device, the unique seamless tape skirt to prevent overflow of material to the side, while avoiding the head and tail of the material
accumulated at the drum, and the belt polished after processing, the Weighing at their best.
(5) the inlet feed stream containing plastic material gate to regulate the thickness of the material layer.
(6) inlet pressure mounted on the bottom plate, can effectively eliminate the position of pressure on the belt weigher.
(7) at the outlet of the lower part of the belt scraper to remove attachments on the belt, to improve the weighing accuracy.
4 electronic weighing system
Sensors detect the weight of the signal accuracy is an important factor affecting the accuracy of measurement, belt weigher traffic data is provided by the weight data and speed
data directly through the math to get.
10-30 type unlevered full suspension weighing bridge, one-piece structure, very easy to install, no maintenance. Scale aircraft without clogging and accumulation of materials,
the resulting zero drift possibilities exist, the system stability. As scale aircraft using full suspension structure, analog calibration
Accuracy tends to be more physical calibration, the calibration can often be replaced in kind.
In order to ensure the stability of the belt scale, high-precision strain gauge sensor installed in the pressure areas to reduce the nonlinearity error. Load sensor with
temperature compensation function high precision, small displacement will also produce a large output signal.
Weighing and controlling instruments using ST2105 belt weigher control instrument, the instrument is a microprocessor-based, specifically designed for industrial use. ST2105-
type instrument is a high-intelligent instrument, its greatest feature is programmable, can achieve human-computer dialogue, so that your operating handy
No PC can also be used alone. In calculating communications, truly a two-way communication function. The instrument also provides monitoring functions, the high and low flow,
speed and weight limit alarm, fault alarm, automatic zero calibration, automatic calibration interval, also has a multi-channel signal output
Input / output functions.
5 Electrical Control System
Electrical control cabinet is set in the control room or in the field, including weighing control instrument, inverter controller, drive motor control devices.
Feeder control using frequency control can be realized in the control room for the feeder distant start, stop and speed control operation, to accept 4-20mA control signal
located at the site manually speeder, manual zeroing devices.
Feeder provides cumulative signal pulse ,4-20mA current signal, the switch output signal.
Power: Power Meter: 220V, 50Hz; power supply 380V, 50Hz; miscellaneous power 220V, 50Hz.