Two phase horizontal spiral centrifuge-Fornitore globale

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No. 50 Chuanxie Road, Fengcheng Town, Fengxian District, Shanghai

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Two phase horizontal spiral centrifuge

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Product details

Working principle

The purpose of separation is to separate substances with different mass ratios in the mixed liquid: separation forms include solid-liquid separation, solid solid separation, liquid-liquid separation, and solid-liquid separation.
When the mixed liquid enters the inner cavity of the high-speed rotating drum through the feeding port, the solid substances with higher specific gravity in the mixed liquid quickly settle to the inner wall of the drum under the acceleration of centrifugal force, and are discharged from the drum body through the solid phase outlet by the spiral pusher; At the same time, light phase substances with lower specific gravity form an inner material liquid ring under the action of centrifugal force, and are discharged from the outside of the drum through the liquid phase overflow port. The drum and the screw pusher operate at high speed simultaneously, and due to the certain speed difference between the two, the solid substances settled on the drum wall are continuously pushed by the screw pusher to the slag outlet for discharge, and the entire separation process continues.

Separation technology

Feed → gravity separation → discharge → slag discharge.

Separation effect factors

Separation factor, effective cavity length to diameter ratio, and liquid pool depth.

field control

The rotational speed of the drum, the differential speed of the screw pusher, and the depth of the effective fluid separation pool are adjusted according to the liquid flow plate at the discharge port.

scope of application

Non volatile, non-toxic, non flammable and non explosive materials.

Centrifuge parameter table

Serial number	Technical Parameter	LW250	LW350	LW450	LW530	LW650	LW720
1	Aspect ratio	3～4.0	3～4.0	3～4.0	3～4.0	3～4.0	3～4.0
2	Processing capacity (m ³/h)	1～5	5～15	15～45	40～70	50～90	70～120
3	Drum speed (rpm)	5000 infinitely adjustable	4200Stepless adjustable	3200Stepless adjustable	3000Stepless adjustable	2800Stepless adjustable	2400Stepless adjustable
4	separation factor	3500Stepless adjustable	3500Stepless adjustable	2600Stepless adjustable	2600Stepless adjustable	2800Stepless adjustable	2300Stepless adjustable
5	Differential speed	0～30Stepless adjustable	0~30 infinitely adjustable	0~30 infinitely adjustable	0~30 infinitely adjustable	0~30 infinitely adjustable	0~30 infinitely adjustable
6	Lubrication method	grease	grease	grease	grease	Thin oil jet lubrication	Thin oil jet lubrication
7	Solid recovery rate (%)	≥99	≥99	≥99	≥99	≥99	≥99
8	Solid content of feed (%)	2~40	2~40	2~40	2~40	2~40	2~40
9	Solid content of clear liquid (%)	≤0.2	≤0.2	≤0.2	≤0.2	≤0.2	≤0.2
10	Host power (KW)	7.5～11	15～22	30～37	55～75	75～110	110～160
11	Auxiliary motor power (KW)	3～4	4～7.5	5.5～11	11～18.5	18.5～22	22～30

Processing capability description: The size of processing capability is related to the characteristics of the material

Centrifuge power description: The centrifuge power is determined based on the material characteristics and other factors

application area

1. Food sector
Animal protein: fish and meat by-products processing, seafood processing, edible protein recycling;
B plant protein: extracted from soybeans, oilseeds, and leguminous plants;
C fermentation broth: recovery of brewing extract, malt extract, and yeast;
D Brewing: Treatment and recovery of distiller's grains and mash;
E coffee and tea: extraction of instant coffee and tea;
F Edible oil: clarification of palm oil, olive oil, and seed oil;
G Juice: Extract juice from fruits, berries, and vegetables;
Pectin: Recovery of extracted pectin;
I Wine: Clarification of grape juice and wine.

2. Environmental protection field
Drilling mud, industrial wastewater, municipal sewage, fertilizers, organic wastewater, paint sludge, plastic granulation, gravel washing water, steelmaking wastewater, flue gas desulfurization, and water plant sludge treatment.

3. Petrochemical industry
A ore processing industry: processing of kaolin and calcium carbonate, production of bentonite and titanium dioxide;
B Petroleum/Natural Gas Exploration and Petrochemical Industry: Exploration of Petroleum and Natural Gas, Extraction of Crude Oil and Related Industries, Lubricant Additives and Waste Oil Recycling;
Organic chemistry industry: intermediate and final products of organic chemistry;
Polymer industry: thermoplastic materials including PVC, polypropylene, polystyrene, synthetic rubber, and fibers;
Inorganic chemical industry: bleaching agents, acids, silica products, and fertilizers;
F Alcohol production: treatment of alcohol distiller's grains, water, and molasses fermentation residue;
G starch processing: extracting starch from wheat, corn, cassava, and potatoes;
H waste liquid recovery: Waste liquid recovery and regeneration from the above-mentioned fields.

4. Other fields:
Pharmaceutical intermediates, various salts, manure

Main technical features

1Industrial design

The overall design follows and integrates industrial design concepts, highlighting the stability of the main structure, the functionality of the host, and the safety of the entire machine, while effectively absorbing the dynamic load shear force during equipment operation.

2、Effectively avoiding the phenomenon of resonance zone in high-speed rotation of dual rotors

Within the designed speed range, there is no obvious first-order or second-order resonance zone phenomenon during the operation of the whole machine, and the full vibration intensity of the bearing seat is controlled at 2mm／s～4 mm／sbetween.Avoiding additional fatigue damage to various components of the equipment caused by high-frequency vibration and beat vibration.

3、Thoroughly eliminate the phenomenon of liquid ring stall

Completely eliminated the entire machine (especially LW530)The above large modelsDuring heavy load start-up or shutdown, the phenomenon of liquid ring stall is avoided, thereby avoiding additional impact fatigue damage to the main bearings, spiral bearings, and rotating components of the equipment caused by the jumping or severe shaking of the whole machine due to liquid ring stall.

4、The raw materials for the components are produced using centrifugal casting and forging processes

The main components of the whole machine are manufactured using centrifugal casting or integral forging processes, which completely avoids the uncontrollable quality risks such as intergranular corrosion and residual stress release caused by traditional welding processes.

5Selection of host bearings

Choose NSKSKF、FAGWaiting for the origin products of the brand.

6、Constant temperature inspection

All precision machined components of the entire machine are inspected under constant temperature conditions to ensure that the actual machining quality meets the design accuracy requirements.

7Interchangeability

The rotating body and all components of the same model of host have interchangeability, which is easier to maintain and greatly improves the reliability and safety of the equipment, under the guarantee of the overall interchangeability structure design and key position processing technology and accuracy.

8、Easy and safe disassembly of bearings

The mating surface between the bearing and the workpiece is separated by a layer of oil film injected under high pressure during disassembly, fundamentally eliminating friction between them and reducing the required pulling force during disassembly by 90%％，Reduced the risk of damage to high-precision components during bearing disassembly.

9Main bearing lubrication system

AThin oil lubrication

①The oil pump station controls the continuous circulation and lubrication of thin oil;

②Jet lubrication method provides continuous cleaning, cooling and lubrication for bearings;

③Equipped with an oil filtration system to ensure the cleanliness of lubricating oil;

④Equipped with an oil supply pressure storage system, it can ensure that the lubrication station continues to supply in case of sudden power outages5～6The minute oil pressure is not less than0.4MPaLubricating oil;

⑤Equipped with an oil temperature constant temperature system.

B, grease lubrication

①Use lubricating grease that is resistant to extreme pressure, oxidation, abrasion, water erosion, corrosion, and high temperature.

②An automatic grease lubrication system can be optionally selected to automatically add a quantitative amount of grease to the main bearings at a set time.

10、main bearingBHProtector

The main bearing is designed with protective bearings at both ends. Under normal circumstances, the protective bearings do not work (a certain axial clearance is reserved between the inner ring of the protective bearing and the main shaft). When the main bearing is suddenly damaged in some unexpected extreme working conditions, or the jumping amplitude caused by the deviation of the main engine rotation center reaches the axial clearance value reserved between the inner ring of the protective bearing and the main shaft, the protective bearing starts to work. At the same time, the automatic control system of the main engine detects a sudden change in the vibration value of the bearing position, and the emergency stop program of the equipment is triggered. Under the action of protecting the bearing, the equipment stops smoothly, ensuring that the main components of the equipment are not damaged and ensuring production safety.

11、GSRLHigh speed feeding device

By adjusting the internal design of the spiral core tube, without reducing the centrifugal acceleration of the original separation solution, the following time of the material entering the centrifuge is shortened, the turbulence of the vortex is reduced, and the separation time is increased. At the same time, it can increase the working pressure inside the centrifuge and inhibit the production of liquid foam.

Advantages: Extend the effective separation time of materials inside the centrifuge, improve separation efficiency, and achieve a reduction in the required separation speed10%~12%Simultaneously increasing processing capacity15%~25%Reduce the solid content of clear liquid; Reduce abrasive wear caused by material particles on components.

12、Adopting a pushing blade with a gradient spiral lead

Reduce the wear of materials on specific spiral feeding blades, while increasing the pressing force of the discharge end on solid slag, further reducing the moisture content of solid slag.

13、HMIHMI

The operating system adopts HMIThe human-machine interface enables various operations of the centrifuge and real-time monitoring of its working status.

14、Intelligent control system

The control system adoptsPLCThe programmable controller has two operation modes: manual operation and one key automatic operation. It has functions such as automatic adjustment of differential speed of the screw feeder, automatic adjustment of constant torque of the screw feeder, one key automatic completion of centrifuge cleaning, and one key standby of the centrifuge.

15Comprehensive security protection system

Having a comprehensive monitoring system and alarm system. Protect the centrifuge in case of overload, short circuit, and phase loss during the work process; Real time monitoring of operating parameters such as centrifuge speed, bearing temperature, and overall vibration, and alarm shutdown in case of abnormal parameters to ensure personnel and equipment safety.

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