Shenzhou Machinery - Professional Industrial Centrifuge Machine Manufacturer and Centrifugal Separators Supplier in China
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Shenzhou Machinery - Professional Industrial Centrifuge Machine Manufacturer and Centrifugal Separators Supplier in China
3 PHASE DECANTER WORKING PRINCIPLE
The three-phase decanter centrifuge operation is based on the principle of sedimentation, that is, solid particles with specific liquid weight precipitate in a predetermined time. This principle can also be applied to two immiscible liquids with different specific gravity. When the material enters the high-speed rotating drum, the material rotates synchronously with the drum. Because of the different specific gravity, the centrifugal force is different. The solid particles with the larger specific gravity are subjected to the greatest centrifugal force, followed by the heavy phase liquid (such as water) and the light phase liquid (such as oil). So the centrifugal force is becoming less from outside to inside according to the magnitude of centrifugal force. A concentric solid layer and two liquid layers are formed. Solids are pushed out by the screw conveyor, and liquids are removed from their respective nozzles. Therefore, the application of three-phase decanter centrifuge can not only separate the solid in the material, but also separate the two-phase liquid with different specific gravity in the material, that is, Solid-liquid-liquid separation can be achieved.
Shenzhou3 phase decanter centrifuge is mainly designed for Solid-liquid-liquid three-phase separation of materials.With our over 10 years of experience in the separation industry, it is the most advanced type machine for 3 phase separation. It is designed for 24 hours continuous and smooth operation throughout the day. It is mainly composed of driving system, decanter bowl, screw conveyor inside the bowl, cover box, skid and VFD control panel.
To ensure that the separation process can take place, the solid phase must be the specifically heaviest phase and the two liquid phases must have different densities.The main difference between the 2 phase decanter and 3 phase decanter is that the 3 phase decanter not only separate the solids but also separate two phase of the liquid.
shenzhou 3 phase decanter is widely used for oil , water, solids separation industry.
Product Description
LWS520 three-phase centrifuge can continuously feed, separate and discharge at full speed. It has the characteristics of compact structure, easy sealing, stable operation, low noise, large processing capacity, low energy consumption, high degree of automation, low labor intensity, convenient operation and maintenance, wide application range and so on. For some materials that are difficult to separate, in addition to taking corresponding adjustment measures for the separat-ed materials themselves, the centrifuge can also be adjusted and improved accordingly:
1. Increase the length diameter ratio;
2. Adjust the rotating speed of the drum;
3. Adjust the differential speed between the drum and the discharge screw;
4. Change the half cone angle of the drum cone section and adopt multi cone angle sorew;
5. Adjust the overflow radius of the liquid phase outlet;
6. Change the number of screw heads and screw lifting angle of discharge screw;
7. Add BD plate structure;
Combined Driving Mode
Single Motor Drive: Single motor drive generally adopts a frequency conversion motor + frequency converter to drive the drum and screw at the same time.
The method is simple, the operation is simple, and the manufacturing cost is low. Single motor drive is mainly used for materials with constant solid content, and there is no strict requirement for the water content of the discharged solid phase. Because there is no necessary differential adjustment mechanism, the differential between the drum and the screw can only be realized by changing the gear transmission ratio or changing the drum speed.
Dual Motor Drive: Dual motor drive generally adopts two frequency conversion motors + two frequency converters tocontrol the dynamic rotation of drum and screw respectively.
ln the dual motor drive mode, the differential speed between the drum and the screw is adjusted by simply adjusting the speed of the motor. This driving mode is applied to materials with variable solid content and strict requirements for discharged solid water content.
Hydraulic Drive: The hydraulic drive generally adopts frequency conversion motor + frequency converter + hydraulic motor to drive the drum and screw respectively.
ln the hydraulic drive mode, the differential speed between the drum and the screw can be adjusted by the hydraulic motor. When moving at very low differential speed, its degree and stability are better than other driving methods.When the drum rotates normally, both the drum and the screw operate at a certain constant speed. Once the load of the screw pusher increases, the hydraulic motor will adjust the screw pusher to accelerate the operation to prevent material blockage.When the machine is stopped for cleaning due to material blockage, the hydraulic system can drive the screw pusher independently to improve the cleaning and maintenance efficiency.
Structure And Working Principle
In the three-phase horizontal screw centrifuge, the materials to be separated enter the acceleration chamber of the screw pusher through the feed pipe and then enter the inner wall of the rotating drum at high speed. Due to the different specific gravity of light liquid phase heavy liquid phase insoluble solid phase in the materials, the centrifugal force on the three-phase materials is different, and the insoluble solid phase is settled to the inner wall (outermost) due to the largest centrifuge with the largest specific gravity, Due to the minimum centrifugal force, the light liquid phase is settled farthest (outermost) from the inner wall of the drum. The heavy liquid phase is in the middle. The insoluble solid phase is discharged from the solid phase outlet through the screw pusher with relative differential speed with the drum. The light and heavy liquid phases are separated by different structures in the machine. The heavy liquid phase is discharged through the centripetal pump and the light liquid phase is discharged by gravity, so as to achieve the purpose of three-phase separation of materials. The light and heavy liquid phases of our three-phase horizontal screw centrifuges are discharged by gravity and centrifugal force respectively, so as to effectively avoid the incomplete separation of materials caused by the mixing of materials. When working, the ordinary three-phase horizontal screw centrifuges often cause incomplete separation due to the unstable components of light and heavy liquid phases, Our three-phase horizontal screw centrifuge can adjust the interface of light and heavy liquid phases according to the changes of material components, so as to achieve the ideal separation effect.
Advantage
At present, three-phase horizontal screw centrifuges are widely used in chemical industry, light industry, medicine, food, papermaking, mining and other industries. And coal tar industry; Petrochemical industry; Fishing powder industry, swill oil industry, electrolytic copper industry, and the separation of oil, water and slag from waste residues in slaughterhouses.
Material concentration: the material is required to have good fluidity, subject to not affecting the feed. The weight percentage of mixed liquid and solid concentration is generally ≤ 20% (good fluidity, which can be relaxed appropriately).
Material temperature: the allowable material temperature of this centrifuge is ≤ 900C.
Separation Range
A. When the liquid viscosity is small and the solid particle size is large, the specific gravity difference between solid, liquid and liquid is required to be ≥ 0.05g/cm3 (solid weight and liquid light).
B. When the liquid viscosity is small and the specific gravity difference between solid and liquid is large (specific gravity difference ≥ 1g / cm3), the solid particle is required to be ≥ 0.005mm and the specific gravity difference between liquid and liquid is required to be ≥ 0.05g/cm3.
C. When the liquid viscosity is large or the specific gravity of solid-liquid is small and the solid particles are very fine, the separation effect will be affected or even not applicable.
D. When the solid particles are easy to be damaged, the separation effect will also be affected.
Other
Industrial and municipal wastewater treatment, oil and gas drilling mud / drilling fluid control, washing, separation and dehydration of starch, separation of mycelium and fermentation broth of antibiotics, dehydration of soybean and wheat protein, dehydration of fish meal and meat, dehydration of distiller's grains, clarification and extraction of fruit juice, separation and purification of animal and vegetable oil, production and purification of olive oil, palm oil and avocado oil, separation and purification of coal tar, classification of kaolin and graphite Classification and dehydration of dyes and pigments, flotation of fine coal and slime dewatering, mineral classification and dewatering principle.
Equipment Characteristics
The centrifuge can clarify, separate and dehydrate 0.002-3mm materials or classify 1um-5um solid particles. It has the characteristics of wide application range, continuous work, large processing capacity, low cost and convenient maintenance. It is the best equipment for solid-liquid separation.
The differential has high precision, compact structure, stable operation and high safety.
The main bearing adopts imported bearing to ensure its operation accuracy and convenient operation.
The contact parts with materials are made of high-quality stainless steel.
The whole machine is equipped with a variety of safety overload protection devices to ensure safe production.
The whole machine system is designed with ordinary type and explosion-proof type to meet different requirements.
Drum cone structure with large aspect ratio, high speed and multiple angles.
The screw pusher adopts hard alloy material for hard surface treatment, with strong wear resistance.
The rack can be designed into low center of gravity, high support and mobile according to the needs of users.
With BD plate spiral structure, it is suitable for the concentration and dehydration of activated sludge and materials that are difficult to separate.
According to the actual requirements, it can be equipped with double frequency conversion and intelligent full-automatic control system.
Main Features
■ Continuous operation, spiral discharge, high capacity.
■ Compact structure and convenient maintenance.
■ Fully enclosed operation, clean and pollution-free on site.
■ The amount of flocculant and cleaning water is small, and the daily operation cost is low.
■ Compact equipment layout and small floor area can significantly reduce land acquisition and infrastructure investment.
Material Selection
According to the user's requirements, the product contact can be made of austenitic stainless steel (321, 316L...), Haines alloy, titanium alloy or other anti-corrosion materials.
Technical Parameter
Product Details
Spiral Feeder
The spiral feeder is made of 304 stainless steel, and the forging process is adopted , which can enhance its corrosion resistance.
BD structure, spraying hard alloy powder on the surface of the blade. The thickness is over 3mm .The spiral outlet is equipped
with a replacement hard alloy sleeve, which greatly prolongs the service life of the machine blade. Because of this technology,the maintenance cost of the machine is greatly reduced. Other parts in contact with the material are 304 stainless steel.
Drum
The drum is cast by 304 stainless steel in centrifugal casting, the forging process is adopted , which can enhance its corrosion resistance, The replaceable alloy sleeve is installed in the solid state outlet, so that the mother material of the drum's outlet is not worn, and the wear-resistant bar is installed in the drum to make the drum inside not worn.
PLC Control Panel
The electrical control adopts the double conversion auto control system, which can display the parameters such as frequency, rotation speed, differential speed and current of operating major and auxiliary electrical engine.
Eletrical Components: SIEMENS/Schneider/ABB
Other Main Components And Parts
Products Packaging
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient shipping packaging services will be provided
.
Customer Photos
Our Services
Pre-Service
1. 24 hours onlinne consult and service
2. Introduce the product to the customer in detail, answer the question raised by customer carefully;
3. Make different plans for choice according to the needs and requirements of customers;
Sale Service
1. Ensure product with high quality before delivery;
2. Packing and shiping carefully;
3. Delivery on time;
4. Provide full set of documents as customer’s requirements.
After-Sale Service
1. Help to install and debug the equipment;
2. Provide 24 hours techincal support by e-mail or phone;
3. Keep sufficient replaceable spare parts;
4. Help customers slove any other questions about products or other aspect;
5. Establish long-term and friendly relationship.
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