China Mqy3660 Ball Mill for Grinding Raw Ore

The Technical Parameters for MQY3660 Ball Mill
Model: MQY3660
Mill type: Overflow
Drum inner dia.: 3600mm
Drum length: 6000mm
Drum effective volume: 57m3
Medium filling ratio: 40%
Max. Loading: 102t
Drum rotation speed: 17.3r/min
Main motor power: 1250kW
Main motor rotation speed: 200r/min
Main motor voltage: 4.16kV
Main motor frequency: 60Hz
MQY3660 Overflow Type Ball Mill Mechanical Parts
Main motor
Air clutch
Control process
Mill main bearing
High/low pressure lubrication station
Main control functions are as follows:
Transmission part
Mill feeding and discharging part
base part
Liners
Air compressor
Lifting device
The Technical Specification for Electrical Part
PLC central control, Siemens PLC300C above, DCS communication port, has communication module function. Except low voltage signals, main motor's all temperature measuring signals will be sent to low voltage control cabinet, which is convenient for monitoring each part temperature when the motor working.
Control method and function
1. Control method
Each set equipment's (except main motor) electrical control include following:
A. Mill machine body: Main bearing temperature monitor (2 points), main bearing lubrication oil flow monitor (1 point each bearing), pinion gear bearing
Temperature monitor(1 point each bearing), above monitor points are all 4- 20mA analog quantity.
B. Lubrication station: Lubrication oil temperature monitor, high pressure oil pressure monitor, low pressure oil pressure monitor, pressure difference monitor, oil level monitor.
C. Injection lubrication: Start/stop display.
D. Low speed transmission: Start/stop display
E. Air clutch: Gasholder pressure monitor, gasbag pressure monitor.
F. Main motor: Bearing temperature monitor (1 point each bearing), stator temperature monitor ( 1 point each phase)
Supplement: Pressure, flow, temperature signals are all 4-20mA analog quantity.
2. Control function
A. Manual, automatic, remote control 3 types of operating mode.
B. Each monitor point of temperature, pressure, pressure difference, oil level etc, all the signals will be sent to control cabinet PLC for processing, and then according to requirement to monitor, control and alarm.
C. Featured of sound-light alarm, fault diagnosis (automatic switch trip), on-line temperature, pressure curves display and memory function.
D. When main motor and air clutch work synchronously, low speed transmission device will stop working automatically.
3. Each set machine's electrical control equipment and supply scope
6.2.2 power PLC control cabinet size: 1200x 600x 2200
6.22 main electrical components
1). PLC processor model: Siemens S7-300
2). Thermal relay: Schneider
3). Intermediate relay: Schneider
4). Signal light, button, change-over switch: Schneider
5). Air switch: Schneider
6). Contactor: Schneider
Connect with the central control room about the signals
All the switches value signals belongs to passive open contact signal, all output analog quantity signals are 4~20mA, 24DC, I/O redundancy is 20%.
Control cabinet included/box (one set)
PLC control cabinet (1 piece), air clutch control box (1 piece), injection device control cabinet(1 piece)
Seq.NameQty.Main ParametersWorking LifeMain Component MaterialA.Main machine1φ3600x6000mm30 yearsOverflow type1Feeding part1Tubular feeding, combination sealing for movable dolly.Above 1 yearElbow: QT450-102Rotating part1Drum body steel plate thickness δ=36mmEnd cover, drum body and main machine have same working lifeDrum body steel plate: Q345B
Drum body flange: Q345B
Drum body liner: manganese
End liner: mangnese
End cover: ZG270-500; 3Main bearing part2Annular sealing, Biarc120° self position swinghybrid bearing; 10 yearsbabbitt metal4Transmission part1Big gear Z2=244 mn=25;
Pinion gear Z1=21 mn=25;
Helical tooth&angle: 5°15';
Tooth width: 500mm; Big&pinion gear use radial sealing;
Bearing model: self-aligning roller bearing 280x580x175Big gear 20years
Pinion gear 10yearsBig gear material: ZG35Cr1Mo;
Pinion gear material: 37SiMn2MoV
Pinion gear bearing is imported5Discharging part1Screen mesh opening rate more than 50%1 yearSteel frame, rubber screen mesh. Screen thickness:15mm Screen opening: 14mm6base part1base plate structure,
with foundation bolt 7Lub. pipeline1 Not include cooling water pipelineB.Matched auxiliary machine1Slow speed transmission device1Brake motor: YEJ2200L-8
15kW,380V,730r/min
Reducer: NCZD630-560-IV;
Slow transmission speed: 1.3r/min
Ratio: 560 Featured of electric and reversing function2Lifting device14x100t Jack
Max. Jack-up height: 150mm
Hydraulic system 3GDR2.5x2/63
High/low pressure oil station1Low pressure pump motor: 5.5kw
2 sets(1 for use, 1 for backup)
Low pressure flux: 63l/min;
Low pressure pressure:0.63MPa
High pressure pump motor: 2.2kw, 2 sets(work simutaneously)
High pressure flux: 2.5x2 l/min;
High pressure pressure: 31.5MPa. Interior oil pump, valves and components for pressure testing, flux testing, pressure difference testing belongs to international famous brand, control cabinet is not included.4Injection lub. device1Injection width 500mm Control included, compressor excluded.5Low voltage control system1PLC central control, DCS port, can be controlled on the spot or far distance. PCL system adopted Siemens PLC300C above.6Main motor1Model: TMW1250-30;
Voltage: 4.16kV;
Rotation speed: 200r/min;
Power: 1250kW;
Protection level: IP36;
F class insulation, B class warming Use excitation synchronous
motor with brush, with excitation cubicle, motor shaft punched, start points open7Air clutch1Dedicated Full set, control cabinet included8Air compressor 10.8m3/min 1Mpa 9Hydraulic torque spanner1 Max. torque: 10704Nm10Flux monitor211Biserial self-aligning spherical roller bearing2Self-aligning roller bearing 280x580x175 Pinion gear is equipped with bearings