LW Horizontal Decanter Centrifuges specially used for Mineral powder dewatering
The product is fed into the feeding area through a fixed pipeline. Then, the product accelerates along the circumference and is transported to the bowl through the port. The vortex rotates at a slightly different speed from the bowl and transports the separated solid to the conical end of the bowl. This speed difference determines the residence time of the solid in the bowl. It can automatically adjust by changing the differential velocity of the vortex to provide the best separation. . Rolling pitch and single or multi lead configurations are important design variables
The bowl has a cylindrical and conical part. The speed is optimally preset based on the application and requirements. The slurry rotates with the bowl at working speed and forms a concentric layer on the bowl wall. The solids contained in the product are pressed onto the bowl wall by centrifugal force. The selection of the length and cone angle of the cylindrical bowl section should meet the specific requirements of the application.
The precipitated solid is sprayed into the solid shell through the port at the conical end of the bowl and falls vertically through the discharge chute
The clarified liquid flows to the cylindrical end of the bowl, where it is discharged through a weir plate. The easily adjustable weir plate can accurately adjust the depth of the pond in the pond. Then, the spilled liquid is collected in the
The three-phase separation, i.e. simultaneous separation of two immiscible liquids with different densities and
one solid phase provided that the solid phase is the heaviest.
The main difference from a decanter is the separate discharge of the two liquid phases
Basic principles
For the auto decanter centrifuges stable performance sludge dewatering separator, the continuous feeding, separating and discharging can be realized as it rotates at its full speed. It is characterized by compact structure, easy obturation, smooth running, low noises, large handling capacity, low energy consumption, high automation, small working strength, simple operation and easy maintenance, and wide applications.
Working principle:
The drum and the spiral feeder rotate in the same direction but with a certain speed difference,the material is led into the feeding spiral inner cylinder via the feeding pipe and after speeding pipe and,after speeding up,enters the drum,under the action of the centrifugal force field,the relatively heavier solid phase material deposits on the drum wall forming the residue
layer,the solid phase residue is continuously pushed by the spiral feeder to conic end of the drum and after dehydration in the drying area is discharged out of the machine.The machine is capable of continuous feeding,separating ,dehydrating and discharging under full-speed running.
Technical Paramter:
Model |
Technical parameter |
motor power |
outline dimension(mm) |
Machine weight
(KG) |
| (Diameter)mm |
Rotation speed
rpm |
Length mm |
Separation factor
G |
capacity
M3/h |
Main motor KW |
Vice motor
KW |
Dimension:
L×D×H |
|
| LW250×1000 |
250 |
3600 |
1000 |
1813 |
1-3 |
7.5/11 |
4/5.5 |
2065×1050×800 |
1100 |
| LW360×1200 |
360 |
3500 |
1200 |
2467 |
3-8 |
11/18.5 |
7.5/11 |
2600×1500×850 |
1900 |
| LW360×1500 |
360 |
3500 |
1500 |
2062 |
3-8 |
11/18.5 |
7.5/11 |
2800×1400×850 |
2000 |
| LW420×1750 |
420 |
3200 |
1750 |
2406 |
4-20 |
30/37 |
11/18.5 |
3120×1580×1050 |
3000 |
| LW450×1600 |
450 |
3200 |
1600 |
2578 |
5-25 |
30/45 |
11/22 |
3780×1050×1180 |
3500 |
| LW450×1800 |
450 |
3200 |
1800 |
2578 |
5-25 |
30/45 |
11/22 |
3985×1050×1180 |
3600 |
| LW450×2000 |
450 |
3000 |
2000 |
2266 |
5─25 |
30/45 |
11/22 |
4320×1050×1180 |
3800 |
| LW500×1800 |
500 |
3000 |
1800 |
2517 |
10-30 |
37/55 |
15/22 |
4200×1110×1200 |
4300 |
| LW500×2100 |
500 |
3000 |
2100 |
2517 |
10-30 |
37/55 |
15/22 |
4500×1110×1200 |
4500 |
| LW550×1800 |
550 |
3000 |
1800 |
2769 |
10-35 |
45/55 |
18.5/22 |
4380×1160×1230 |
4800 |
| LW550×2200 |
550 |
2800 |
2200 |
2412 |
10-35 |
45/55 |
18.5/30 |
4780×1160×1230 |
5000 |
| LW650×1750 |
650 |
2000 |
1750 |
1454 |
20-50 |
75/90 |
30/37 |
4576×1300×1250 |
6000 |
| LW650×2000 |
650 |
2000 |
2000 |
1454 |
20-50 |
75/90 |
30/37 |
4900×1300×1250 |
6200 |
| LW800×2000 |
800 |
1800 |
2000 |
1450 |
40-100 |
90/110 |
45/55 |
6052×1460×2100 |
10000 |
| LW1000×2350 |
1000 |
1600 |
2350 |
1432 |
50-140 |
110/132 |
55/75 |
6850×1860×2300 |
12800 |
The advantages of our product
1. Industrial design
Whole machine set design follows concept of advanced industrial design,ensures stability,functionality and safety of whole machine.Also effectively absorbs shear force of dynamic load during operation.
2. Effectively ease resonance during rotating of bi-rotor
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 electrical components selection
We use origin bearings of international first-line brands such as S-K-F,F-A-G and so on.Electrical components mainly adopt ABB and Siemens
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)
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
FAQ
Q1: Where can I get product & price information?
A1: Send us inquiry or email directly, then we will contact you ASAP.
Q2: How can I make sure your machinery is suitable for me?
A2: Please tell all the separation information you know, such as your raw liquid,
two-phase or three-phase separation, solid content in liquid, solid size, the purpose, etc. After analyzing your information, we will to choose a suitable model for you, and send the details and videos to you.
Q3: What should I do if I want to see the separation effect?
A3: If you can come to our factory with the raw liquid, we will provide test service. Or you deliver the raw liquid to us, and we will do a test, and supply you the testing videos.
Q4: How to enjoy the OEM services?
A4: As the manufacturer of the machine, we will try our best to satisfy you if you have any specific requirement, such as the cover device, drum size, motor voltage, etc.
Audited Supplier 
LW Horizontal Decanter Centrifuges specially used for Mineral powder dewatering
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