Skid-mounted Explosion-proof Three-phase Decanter Centrifuge System mainly consists of Decanter centrifuge, Centrifuge skid-mounted System (including skid platform, water tank, and oil tank),Pressure transmitter,Screw pump,Gear oil pump,Slurry pump and Explosion-proof fully automatic control cabinet.
The decanter centrifuge consists of a rotating bowl, conveyor screw, differential gear unit, machine frame, housing cover and drive motors. The rotating bowl is constructed with high-strength duplex stainless steel casting for enhanced durability. The centrifuge employs a dual-motor drive system where the main motor powers the bowl to generate centrifugal force while the auxiliary motor drives the screw to facilitate solids discharge.
The slurry is pumped into the decanter centrifuge through the feed pipe by the slurry pump. The high-speed rotation of the bowl generates strong centrifugal force, causing solid particles to settle against the inner wall of the bowl. The settled solids are continuously discharged by the conveyor screw and transferred to the sludge storage area via a screw pump. Simultaneously, the lighter water and oil phases form concentric liquid layers, with the clarified liquids continuously overflowing from the bowl's discharge weir at the large end. These separated phases are then directed into their respective water and oil collection tanks.
The system achieves fully automated, continuous feeding and discharging in a compact, integrated design with optimized footprint. The entire separation process is completed seamlessly with high operational efficiency. Additionally, it incorporates interlocked peripheral equipment such as an automated chemical dosing system to enable targeted material separation.
Key Features:
1.Bowl, conveyor screw and other wetted parts are constructed with duplex stainless steel for optimal corrosion resistance based on operating conditions.
2. Single-lead, right-handed conveyor screw with hard-faced welded alloy strips for enhanced abrasion resistance and extended service life.
3. CNC-machined, high-precision balanced bowl with high G-force capability to maximize separation efficiency.
4. Dual-frequency drive with common DC bus control enables stepless speed adjustment of both bowl and screw.
5. Motors: IP54 protection, Class F insulation, 50Hz, IE3 premium efficiency
Gearbox: Hardened gear reducer for heavy-duty operation
6. Selectable differential mechanisms: cycloidal, planetary gear, or hydraulic to match specific process requirements
7. Fully enclosed system prevents VOC emissions and leakage.
8. Main bearings sourced from world-leading brands such as SKF (Sweden) or NSK (Japan) OEM products.
9. Comprehensive Safety Protections: Over-vibration Protection, Lid Open Protection, Motor Overload Protection, Differential Speed/Torque Control, Forced Oil Lubrication for Main Bearings, Main Bearing Temperature Monitoring, Screw Conveyor Torque Protection, Static Electricity Grounding Protection, Maintenance Lockout Protection .
The Equipment Parameters ：
Brand | Lifeng Energy | Model | LFLWS-650-F |
1 | Drum Large End Diameter | 650mm | 2 | Material in Contact with Media | Duplex Stainless Steel Centrifugal Casting |
3 | Drum Length | 2730mm | 4 | Drum Design Speed | 2900rpm/min |
5 | Length-to-Diameter Ratio | 4.2 | 6 | Differential Speed | 5-35 rpm |
7 | Conveyor Differential Speed | 1-45r/min | 8 | Differential Speed Adjustment Accuracy | 0.1～0.5 rpm |
9 | Lubrication Method | Lubricating Oil Lubrication | 10 | Design Maximum Separation Factor | Max.3053 |
11 | Noise Level | ≤85dB(A) | 12 | Motor Protection Class | IP55 |
13 | Oil Content in Discharged Sludge | ≤8% | 14 | Processing Capacity | 15-25m³/h |
15 | Motor Power(kW) | 132KW+45kw | 16 | Equipment Dimensions | 5450*1480*1700 |
Main Configuration List：
No. | Configuration Name | Manufacturer | No. | Configuration Name | Manufacturer |
1 | Bearings | NSK or equivalent bran | 7 | High-Strength Screws | THE or equivalent brand |
2 | Differential Bearings | NSK or equivalent brand | 8 | Seals | Nitrile Rubber (NBR) or equivalent brand |
3 | Motor | Wannan or equivalent brand | 9 | Control Cabinet HMI Screen | MCGS or equivalent brand |
4 | Belts | Sanlux or equivalent brand | 10 | Control Cabinet PLC | Delta or equivalent brand |
5 | Planetary Gear Differential | Hangzhou Gearbox or equivalent brand | 11 | Control Cabinet Enclosure | Lifeng Energy |
6 | Control Cabinet Inverter | Omron or equivalent brand | 12 | Control Cabinet Electrical Components | Chint or equivalent brand |
Configuration List：
No. | Configuration Name | Model/Specification | Unit | Qty | Remarks |
Explosion-Proof Skid-Mounted Horizontal Spiral Decanter Centrifuge System |
1 | Pressure Sensor | WC1520 | PC | 1 | Jiangsu Tianwei |
2 | 650 Centrifuge | 3-Phase Decanter 132+45kw VFD | PC | 1 | Lifeng Energy |
3 | Centrifugal Pump | 25m³/h/50m/4kw/DN50 | PC | 1 | Explosion-Proof Type |
4 | Gear Oil Pump | 20m³/h/50m/4kw/DN50 | PC | 1 | Explosion-Proof Type |
5 | Screw Pump | 20m³/h/50m/3kw/DN50 | PC | 1 | Explosion-Proof Type |
6 | Ski-Mounted Platform |
| Set | 1 | Lifeng Energy |
7 | Screw Conveyor | 3m³/h/3kw/DN300 | Set | 1 | Lifeng Energy |
8 | Guardrail |
| Set | 1 | Lifeng Energy |
9 | Ladder |
| Set | 1 | Lifeng Energy |
Automation Control Module |
1 | Explosion-Proof Control Cabinet (Pressurized) | 2000*1500*800 | PC | 1 | Explosion-Proof Material |
2 | PLC | DVP-ES2RE | PC | 1 | Delta (Taiwan) |
3 | HMI Touch Screen | 10-inch | PC | 1 | MCGS (Kunlun Tongtai) |
4 | 450Decanter VF D(Main) | 132 kW（Host Inverter） | PC | 1 | Sinewave Circuit |
5 | 450 Decanter VFD (Auxiliary） | 45 kW（Auxiliary Inverter） | PC | 1 | Sinewave Circuit) |
6 | Screw Pump VFD | 3 kW（Screw Pump Inverter） | PC | 1 | Sinewave Circuit |
7 | Low-Voltage Electrical Components |
| lot | 1 | Chint (ZhengTai) |
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