Rotor Weigh Feeder

The rotor weigh feeder adopts a balanced weighing structure and multi-compartment rotor. Its zero point will not be affected by air flow, material adhesion and dust accumulation. The weighing system delivers high accuracy and stable performance. Equipped with a high-performance control system, it features fast response and sensitive regulation. With microprocessor technology and powerful control software, the equipment realizes reliable system control as well as precise weighing and quantitative feeding of powder materials.

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產(chǎn)品介紹

Product Description

Equipped with a high-performance control system, it features fast response and sensitive regulation. Microprocessor technology and powerful control software guarantee reliable system operation as well as precise weighing and quantitative feeding of powder materials.

It adopts variable frequency speed regulation with a wide adjustment range.

On-site target setting and calibration are available to ensure long-term stable operation.

Featuring fully sealed design, it prevents powder leakage and dust emission. The system boasts flexible configuration and easy installation.

It supports powerful communication functions. Besides independent control, it can receive and output various signals to adapt to different control solutions.

Main Technical Performance

System dynamic cumulative error: ≤±1%

Control accuracy: ≤±1%~2%

Feeding capacity: 0.5t/h - 500t/h (Bulk density: 1t/m3)

System power: ≤10kW

Operating voltage of control system: 220V±10%, 50Hz±1Hz

Operating environment: Temperature -20°C ~ 50°C, Relative humidity ≤85%RH

Applicable materials: Powder materials (coal powder, raw meal, fly ash, etc.)

Technical Parameters

Model	Capacity (t/h)
SX-1	6
SX-2	12
SX-3	40
SX-4	70

Parameter	Specification
Static measurement error	≤ ±0.25%
Dynamic cumulative error	≤ ±1%
Control error	≤ ±1%–2%
Zero stability	≤0.0035%Cmax
Repeatability	≤0.06%
Linearity	≤0.25%
Instantaneous flow	0—70m3/h
Totalized flow	0—99999999
Unit of measurement	Total delivery: t; Instantaneous delivery: t/h
Power supply & Power	Drive motor: 380V ±10%, 50Hz Instrument: 220V ±10%, 50Hz
Environmental requirements	Indoor installation: Altitude ≤1000m, Vibration ≤0.5g, Amplitude ≤800μm Operating temperature: —20℃—+40℃ Storage temperature: —20℃—+65℃ Relative humidity: ≤85%RH Cooling mode: Natural cooling or air cooling
Overall dimensions	Instrument cutout size: Length × Width=282×88mm PLC cutout size: Length × Width=163.5×93.5mm Electric control cabinet: Height × Width × Depth=1800×600×600mm

Overall Technical Features

Weighing mechanism	Reed-type weighing mechanism with no friction. The reeds bear force evenly for better linearity and repeatability.
Feeding type	Optional accessories include rotor feeder, single-screw feeder, twin-screw feeder and electromagnetic screw unloader according to on-site process.
Multi-layer structure	The multi-layer design adapts to high-flow spurting materials and minimizes impact caused by moist materials.
Assembly technology	Special manufacturing and precise assembly inside the rotor scale ensure stable rotor operation. Combined with variable frequency speed regulation, it maintains uniform material filling rate and guarantees high weighing accuracy.
Flow stabilization & sealing	The unique flow stabilizing unit and dedicated sealing structure effectively prevent material spraying and leakage.
Variable frequency speed regulation	The drive motor is equipped with vector frequency converter with comprehensive protection functions.
Drive motor	Integrated direct-coupled variable frequency motor with forced air cooling, featuring low noise, low vibration, low dust emission, long service life and high reliability.
Zero point guarantee	Rotor blades are specially treated with tight sealing to ensure complete material discharge after each feeding. It maintains stable zero point and supports dynamic zero compensation for direct and accurate measurement of material mass inside the rotor.
Weight signal	Cantilever bellows-type sealed weight sensor is adopted. After amplification and processing by signal transmitter, pressure signals are output in 0-20mA/4-20mA current signals, featuring long transmission distance and strong anti-interference capability.
Speed signal	Speed sensor or rotary encoder delivers high speed measurement accuracy and strong anti-interference performance. Matched with self-developed modules, the speed measurement accuracy remains above 0.06% at low frequency operation (≤50Hz).
Dual regulation	For specific working conditions, the feeder can adjust feeding weight while the rotor scale regulates speed and flow rate.
Control unit	Adopts imported instruments or PLC system with communication interface for connection with DCS.
Control mode	Centralized control: Remote control via central DCS system. Local control: Operation on the feeder control panel. Maintenance mode: For equipment calibration and maintenance by technicians.
PrP Interface	Analog signals: Setpoint input, flow feedback. Digital signals: Ready, acknowledge, run, fault, total pulse, external start, speed feedback.
Profibus-DP	Profibus-DP communication can be expanded for connection with DCS.
Adaptability	Equipped with air conveying device to adapt to various pressure working conditions (e.g. coal powder, raw meal). Flow-aid system is optional for poor material discharging from silos.