Horizontal Screw Discharge Sedimentation Decanter Centrifuge - Zonelink
Overview: Decanter centrifuge and material contact parts materials are stainless steel; Other parts that are not in direct contact with the liquid, such as the frame, the main bearing seat, etc., are steel, cast iron or other suitable types of materials.
Machine stand (base) : The base provides a solid foundation for mounting the main parts of the machine. The machined surface of the base is used to support the main bearing seat, the centrifuge bottom shell, the feed pipe support base, the motor parts and the base connection.
LW355×1460-N horizontal screw discharge sedimentation decanter centrifuge
What is horizontal screw discharge sedimentation decanter centrifuge?
The decanter centrifuge is a countercurrent horizontal spiral discharge sedimentation decanter centrifuge, the main machine is composed of cylinder-cone drum, spiral discharge device, differential system, bearing seat, frame, cover, main and auxiliary motors and electrical systems. The decanter centrifuge working principle is: suspension Under the centrifugal force generated by high-speed rotation, solid particles with larger gravity are deposited on the inner wall of the rotating drum. The spiral blades moving relative to the rotating drum continuously scrape the solid particles deposited on the inner wall of the rotating drum and push out the slag discharge port. The separated clear liquid flows out of the rotating drum through the opening of the liquid layer regulating plate.
The relative motion between the screw and the drum, that is, the differential speed, is achieved by the differential, and its size is controlled by the auxiliary motor. The housing of the differential is connected with the drum, the output shaft is connected with the helix, and the input shaft is connected with the auxiliary motor. The main motor drives the rotation of the drum and also drives the rotation of the differential housing, and the auxiliary motor controls the speed of the input shaft of the differential through the coupling. The differential can transfer the torque to the screw according to a certain speed ratio, so as to realize the continuous separation process of the centrifuge.
The decanter centrifuge adopts the international most advanced special structure design, with better performance than ordinary centrifuge, larger processing capacity, better separation effect, energy saving, stable and reliable, easy to operate and other characteristics, the product passed the ISO9001:2000 family quality system certification. The mechanical performance is higher than JB/T502-2004 "screw sedimentation discharge decanter centrifuge" standard. Zonelink is a professional decanter centrifuge manufacturer. Follow our step-by-step understanding of decanter centrifuge specifications, separation performance parameters, material characteristics, operation mode, and technical parameters.
Decanter centrifuge specifications
Total decanter centrifuge length | 3230mm |
Decanter centrifuge width | 920mm |
Decanter centrifuge height | 1120mm |
Total decanter centrifuge weight | 2250kg |
Turn the inside diameter of the drum | 355mm |
Length-diameter ratio | 4.3 |
Design speed | Variable frequency speed adjustment below 4000r/min |
Working speed | Variable frequency speed adjustment below 3500r/min |
Maximum design separation factor | 3181 |
Capacity | 3-10m3/h |
Differential speed | 0.1 ~ 30r/min stepless adjustable |
Main motor power | 15kW (380V/3/50HZ) three-phase AC asynchronous motor is selected |
Auxiliary motor power | 7.5kW(380V/3/50HZ) three AC asynchronous motors are selected |
Motor protection class | |
Motor insulation class | E Grade |
Operating noise | ≤85dB(A |
No-load vibration intensity | ≤4.2mm/s |
Decanter centrifuge separation performance parameters
○ The differential adopts a planetary gear structure with large bearing capacity and stable and reliable operation
○ Double motor double frequency drive system, realize the difference speed stepless adjustable energy feedback
○ The inner surface of the centrifuge drum is equipped with longitudinal stainless steel anti-wear strip to effectively prevent the inner wall of the drum from wearing out, which is conducive to the introduction of mud.
○ Centrifuge cleaning equipment
In the case of equipment operation and shutdown, the centrifuge hood, drum, screw and other parts are cleaned.
○ Centrifuge main bearing design life: 50,000 hours
○ Tungsten carbide design life: 10000 hours
Centrifuge design life: 20 years
○ Lubrication mode: main bearing: grease lubrication
Spiral bearings: grease lubrication
Differential: thin oil lubrication
○ Safety protection: safety cover, vibration protection, etc.
Centrifuge design life is more than 20 years
Decanter centrifuge material
○ Screw discharger material: 304 stainless steel
○ Feed port of screw discharger: tungsten carbide surfacing welding
○ Spiral discharger blade: tungsten carbide surfacing welding
○ Drum material: AISI2304
○ Cone body slag outlet: inlaid with replaceable wear-resistant ceramic bushing
○ Centrifuge drum inner surface longitudinal anti-wear strip: AISI304 stainless steel
○ The metal surface of the screw discharger (the part in contact with the material) is pickled to show metal color
○ Frame material: high quality carbon steel
○ Frame surface: advanced zinc-rich paint
○ Material of parts in contact with sludge: 304
○ Hood, liquid hopper, slag hopper material: AISI304
○ Main bearing: imported German FAG
○ Main seals: imported oil seal, material nitrile rubber
○ Triangle belt: domestic brand
○ Grease brand:
Main bearing: Mobil 32#-DTE light grade circulating oil
Spiral bearings: TRIPAK-7401 extreme pressure compound reasonable base grease
Differential: UK Shell Vane Circulation System Oil 150#
Decanter centrifuge operation mode
The main machine of LW355 centrifuge is composed of double motor, double frequency conversion control, energy feedback driven by high performance frequency converter and complete function control system. The characteristics of this control system are
a. The DC bus of the main and auxiliary inverter is directly connected, which has excellent energy-saving effect and obvious energy-saving effect. The auxiliary motor is in power generation state when the centrifuge is running, and the working system is continuous.
b. Gentle start, wide speed range, can meet the treatment of liquid with different solid content, significantly improve the processing capacity;
c. The main motor and the auxiliary motor are controlled by frequency converter, which realizes the stepless adjustable speed and differential speed of the centrifuge drum within the design range by adjusting the rotation of the auxiliary motor speed can obtain a reasonable difference of speed.
Decanter centrifuge technical parameters
a. One LW355 centrifuge
b. One feed pump
3. Electrical control requirements (control function) :
a. Centrifuge main motor inverter start, stop, speed regulation and overload lack equal protection. b. Start, stop, speed regulation and overload equal protection of the centrifuge auxiliary motor inverter.
c. Linkage, interlock, and protection of auxiliary equipment
4. Electrical product configuration
1. The main and auxiliary motors of centrifuge use Anhui Anhui electric ordinary motors, 380V 60HZ.
b. The inverter adopts ABB products.
c. PLC, touch screen choose Siemens brand.
d. The material of the control cabinet is 304 stainless steel, and the power distribution room is placed.
e. Field operation is controlled by the field operation box.
5. Manufacturing standards for control cabinets
(1) All the control cabinets and switchgear used for low-voltage AC system are installed and tested in accordance with the technical requirements of IEC439 on the installation of power system protection circuits. 380V power supply is directly supplied to each cabinet, and the cable entry mode is the cable entry line. The user provides 380V/220V (three-phase four-wire) low voltage
Power supply, the electrical control cabinet accepts the power supply side is provided with a main air switch, the air switch has a short circuit and
Overload protection.
(2) Main technical parameters:
Rated insulation voltage: 660V
Rated working voltage: 380V
The main equipment in the cabinet meets GB or IEC standards, and the automatic air switch is full
Compliance with IEC974-2 standard.
(3) Contactor and terminal mark comply with the following standards: IEC847-4, IEC445.
Contact operating power complies with IEC947-5
The rated insulation voltage complies with IEC337-1
(4) overload relay and comply with IEC947-4 standard, its protection level in line with the current national standards, jump
The brake grade conforms to IEC947-1 standard.
(5) The intermediate relay conforms to IEC65, IEC435 standards, adopts building block structure, and is installed on the guide rail