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  • LWF 2 Phase Decanter Centrifuge

  • LWF 2 Phase Decanter Centrifuge

  • LWF 2 Phase Decanter Centrifuge

  • LWF 2 Phase Decanter Centrifuge

  • LWF 2 Phase Decanter Centrifuge

LWF 2 Phase Decanter Centrifuge

LWF Sedimentation Centrifuge is a horizontal, continuously working and continuously spiral discharging sedimentation centrifuge. 

product description

Brief Introduction

LWF Sedimentation Centrifuge is a horizontal, continuously working and continuously spiral discharging sedimentation centrifuge. It is used in a variety or industries for separating all kinds of solid liquid suspension, defecating liquid phase with graded grains, and dehydrating sludge such as: polyoxyethylene, sulfurous acid tansuanbei, strontium sulfate, lidefen, titanium pigment, ore porcelain, clay, kaoline, diatomite, amylum, soyabean protein earthnut protein, syrup, beverage, vegetable oil, citric acid scavenge oil purification, cleansing water purification, lees, tallow, blood powder, sludge from power plants, sludge from printing and dyeing, sludge from paper making, sludge from desulfurizing natural gas, calcium carbide sludge, activated sludge ammonia sludge, sludge from washing cars, alum sludge, drilling mud, coal flotation waste, cryolite flotation liquid.

Main Technical Parameters

Type                        DrumMain Motor Power(kw)Processing Capability(m3/h)Max Speed(r/min)
Diameter(mm)Effective Length(mm)
LWF 250*100250100110.5-34000
LWF 350*14603501460223-124000
LWF 450*1800450180030-456-203600
LWF 520*2130520213045-7512-302800
LWF 650*2275650227575-11025-352500
LWF 720*26657202665110-16045-1002000
LWF 900*27009002700160-22050-1101500
LWF 1000*25001000250028050-1201500

Structure Indication

LWF 2 Phase Decanter Centrifuge

1、Main motor  2、Main motor frame  3、Feeding Pipe  4、Main bearing pedestal  5、Solid phase outlet  6、Shell  7、Hudraulic Differential  8、differential cover  9、Coupler  10、Drum and Spiral  11、Frame  12、Liquid phase outlet  13、Shock absorber  14、vice motor

This machine is a countercurrent horizontal spiral discharging and settling centrifuge (horizontal screw centrifuge or centrifugal dehydrator for short), and the main machine is composed of column and cone drum, spiral discharging device, differential, bearing seat, frame, housing, main and auxiliary motors, and electrical system.Its working principle is: the suspension after the feed pipe and spiral discharging mouth into the drum, under the effects of the centrifugal force at high speed, high proportion of solid phased particles deposited on the inner wall of the drum, the drum for relative motion of the helical blade will continuously of solid phased particles deposited on the drum wall scraping, spiral pusher of solid phased particles will scrape the specially designed the structure of the two-way extrusion.

Description of Main Parts

1. Drum Parts:

● drum adopts centrifugal casting or forging, choose stainless steel material according to the material properties, choose 2205 duplex stainless steel;

● drum parts of castings, welding parts and forging after high temperature heat treatment process (solid solution treatment), effectively avoid the intergranular corrosion of stainless steel organization and delta facies tended to defect, improve the organizational structure and corrosion resistance of the weld area, can fully eliminate the casting, welding, forging stress and processing residual stress;

● drum parts of castings, welding parts and forgings according to standard JB/T9095 and technical specification of JB/T10411 NDT inspection and acceptance.

LWF 2 Phase Decanter Centrifuge

2. Spiral Discharger Components:

● spiral blade is made of stainless steel sheet suppression and become, after extrusion, due to the existence of the surface compressive stress, strength and wear performance is greatly enhanced, not easily by pushing torque deformation;

● spiral feeding port and the location of the blade pushing part, such as easy to wear according to material features with spray hard tungsten carbide, tungsten carbide hardness of the coating is HRA65 ~ 68, the high hardness reduces the material of the spiral wear and improve the service life of the screw;Stainless steel 316L is selected for other parts and parts of the screw according to material characteristics.

LWF 2 Phase Decanter Centrifuge

3. Bearing Block Components:

● parts according to the material characteristics of bearing parts contact with material choose stainless steel material, other parts made of high quality carbon structural steel and alloy steel;All bearings are of international brand (NSK or SKF or FAG);

● thin oil circulation is used in the main bearing lubrication, to guarantee good lubrication of the bearing, the equipment safe and reliable operation, easy to operate;Spiral bearings are lubricated with grease (mobil EP2);

● lubrication system of the machine set including the oil pump motor, oil pump, oil filter, pressure gauge, etc., cut-off protection: lubricating pump if abnormal centrifuge automatic alarm downtime, restore power machine can't start, when the power must be started manual intervention, and set the permissions;

Working Principle

Material enters the centrifuge from the inlet pipe and enters the high-speed rotating drum under the action of the screw accelerator. Material begins to stratify in the settling area of the drum. The solid phase with a specific gravity is thrown onto the drum wall. The solid that settles on the drum wall is pushed to the slag outlet by the screw conveyor. Outside the machine, the liquid phase with a lighter specific gravity overflows through the overflow hole at the large end of the drum. Differential is a device which ensures the stability of differential speed and produces larger torque. In addition, dual motor dual frequency conversion device with common DC bus can realize stepless adjustability of drum speed and differential speed, which can adapt to the change of flow and concentration, and ensure good and stable separation effect.

Processing Equipment

LWF 2 Phase Decanter Centrifuge

Test Equipment

LWF 2 Phase Decanter Centrifuge


LWF 2 Phase Decanter Centrifuge