2 Phase Decanter: Advanced Technology for Efficient Separation

The purpose of separation is to separate out substances with different mass ratios from mixed fluid.Separation forms included solid-liquid separation,liquid-liquid separation and liquid-liquid-solid separation.
When mixed fluid enters rotating bowl of centrifuge through feed tube ,solids with larger density would rapidly deposit on inner wall of the bowl,forced by centrifugal acceleration.Then spiral pusher pushed deposited solids to taper end of the bowl,and discharges them out of centrifuge from residual outlet.Meanwhile ,liquid phase with smaller density forms a liquid ring layer and discharges from bowl through overflow port,the bowl and spiral pusher run at a high speed simultaneously ,for there exists speed discrepancy,deposited solids on the wall of bowl could be conveyed to residue outlet by spiral pusher.This separation process carry out continuously.

Separation technique

1. Food

A flesh processing,aquatic products process and edible protein recovery;
B Extract plant protein from soybean,oily seeds and leguminous plants;
C Recovery of brewing leach liquor malt and yeast
D Treatment and recovery of wine lees liquid;
E Extract of instant coffee and tea;
F Clarification of palm oil,olive oil and seed oil;
G Extract juice from fruits ,berries and vegetables;
H Recovery of refined pectin;
I Clarification of grape juice and grape wine.

2. Environmental protection
Continuous Dewatering Centrifuge for Mine Stone Waste Water Horizontal Spiral Settling Separator
Drilling mud ,industrial effluent ,waste water of municipal works,fertilizer,organic waste water,paint sludge,plastic
particles,gravel washing water,waste water in steel-making ,flue gas desulfurization,sewage sludge treatment of waterworks.

3. Petroleum and chemical industry

Horizontal Spiral Settling Separator

A Processing of kaolin and calcium carbonate,production of bentonite and titanium dioxide;
B Exploration of petroleum oil,natural gas,crude oil refining and related industries,additive of lube oil and waste oil recovery;
C Intermediate products and final products of organic chemistry industry;
D Thermoplastic materials,includes PVC,polypropylene,polystyrene,synthetic rubber and fiber;
E Inorganic chemical industry ,includes bleach,acid,silica products and fertilizers;
F Treatment of spent wash and molasses fermentation residues;
G Extraction of starch from wheat,corn ,cassava and potato;
H Waste liquid recovery and recycling from above industries.

Other fields
Pharmaceutical intermediates,salts and manures,etc.

Continuous Dewatering Centrifuge
When centrifuge works,there is no obvious first-order and two-order resonance regions within designed speed range,meanwhile ,whole vibration intensity of bearing seat is definited within 2mm/s-4mm/s.All of this eliminates extra fatigue damage to components and assembly units from high frequency vibration during operation and sudden vibration when shut down.

3. Thoroughly eliminate phenomenon of liquid ring stalling

Phenomenon of liquid ring stalling happens during heavy duty boot or shutdown process of complete set machine,especially for LW550 and even larger models,It would makes bounce or wild shake,causes extra impact fatigue damage to main bearings,screw bearings and inner parts of rotary bowl.Fortunately ,our engineers have solved this problem thoroughly.
4. Unique technique adopt in main component work-blanks

The manufacturing methods of main component work-blanks are adopt centrifugal casting technique and overall mould-making forging technique,thoroughly avoid risks such as inter-granular corrosion and relaxation of residual stress release in welding joint.

5. Main bearing selection

We use origin bearings of international first-line brands such as SKF,FAG and so on.

6. Constant temperature detection

All fashioning components and assembly units are detected in constant temperature condition,to make sure of actual processing quality meets the requirements of designed precision accuracy.

7. Inter-change ability

Whole machine physical design and processing technique adopted in critical position,ensure all assembly units and bowls of the same centrifuge model interchangeable.It is not only easy to maintain ,but also greatly improve the reliability and safety of equipment.

8. Simplyand safely in bearing disassemblement

One layer of oil film is injected into contact surfaces between bearing and work-piece by high-
pressure,during disassemblement bearing from the machine.which would fundamentally eliminate friction within different parts.As a result,it would reduce 90% of pulling force and lower the risk of damage to high-precision parts when disassemble bearing.
9.Main bearing lubrication system
There are two kinds of lubrication system for specific product models :
A thin oil lubrication
* Oil pump offers an uninterruptedly power to ensure oil works circularly;
* Jet oil lubrication constantly clean and lubricate bearings and reduce temperature;
* Oil filter system ensure lubricant’s cleanliness;
* Oil pressure energy storage system ensure lubrication pump offers an extra oil supply(the pressure is no less than 0.4Mpa) for 5-6 minutes,when power fails accidentally;
* Constant temperature system is available.


B grease lubrication
* Adopt a grease with properties of extreme pressure resistance ,oxidation resistance ,abrasion resistance,water scour
resistance,corrosion-proof and high temperature resistance.
* Optional automatic grease system fills grease on main bearing at designed hours and quantity.

10. Main bearing BH device (patent design)
Continuous Dewatering Centrifuge for Mine Stone Waste Water Horizontal Spiral Settling Separator
There are two spare safe bearings at either end of main bearing.When machine works well,they keep certain clearance from bearing inside track to chief axis.When unexpected condition occurs,main bearing got damaged or circle center deviation causing an amplitude of vibration reaches to designed clearance,safe bearings begin to work as main bearing Meanwhile,computer automatic control system would get a feedback of abnormal vibration value on bearing position immediately then activates emergency shutdown and goes a smooth shut down.This system protects machine free from damaging and ensure production safety.

11. GSRL feeding device (potent design)

New design of internal spiral core tube has got following achieves.Without reducing centrifugal acceleration,shorten triangle belt's traction time,reduce disorder of swirling flow and extend separation time.Meanwhile increases inner working pressure of centrifuge,and restrains liquid foaming.