gnlw363 d fhd decanter centrifuge

GNLW363D-FHD Decanter Centrifuge

Full Hydraulic Drive

24/Oct/2016

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VISCOTHERM FHD System

GN Solids Control is a leading decanter centrifuge

manufacturer. And Viscotherm and ROTODIFF® from

Switzerland are leading brand for centrifuge hydraulic

driving system. GN and Viscotherm has been jointly

working together to develop the Full hydraulic drive

centrifuge for international clients to meet the highest

standard.

The hydraulic bowl and scroll drive system drives both

the hydraulic motor ROTODIFF and the bowl of a

decanter centrifuge from hydraulic pump unit by two

hydraulic oil circuits.

The advantage of the FHD centrifuge is for use in high

temperature ambient for heavy mud with flexible bowl

and differential speed. The compact one skid design

makes it easier for rig up.

Decanter Centrifuge Full Hydraulic Drive

www.gnsolidscontrol.com

http://www.gnsolidscontrol.com/

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Technical Specs GNLW363D-FHD Decanter Centrifuge

Model GNLW363D-FHD

Bowl Size 360x1270mm

Bowl Speed 0-3600RPM （2610G）

Differential Speed 0-70RPM

Motor Power 45 KW

Driving System VISCOTHERM FHD System

Max Capacity 200GPM(45m3/h)

Max Torque 4163 N.M

Dimension(mm) 3000x2400x1860mm

Weight (KG) 3400KG



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Material Spec GNLW363D-FHD Decanter Centrifuge

Model GNLW363D-FHD

Bowl Material Duplex SS2304/SS2205 from centrifugal casting

Screw Material Stainless Steel SS 304/ SS 316

Screw Protection Tungsten Carbide Tiles

Solids Discharge Tungsten Carbide Inserts

Bearing Brand SKF

FHD Brand VISCOTHERM Full hydraulic drive

Electrical Control PLC Smart Control

Coating Brand Cosco & Kansai Zinc Rich Epoxy Coating



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Advantages GNLW363D-FHD Decanter Centrifuge

Item Description

FHD System Full hydraulic drive system to use in high temperature ambient for heavy mud with flexible

bowl and differential speed.

Flexible Solids

Discharge

Adjustable bowl speed, differential speed, pond depth to discharge different dryness of solids

for different slurry conditions.

Reliable

Performance

High-precision CNC machinery processing, rotating parts are balanced by high speed

balancing machine to ensue reliable performance.

Heavy Duty The torque gearbox is up to 4163 N.M for heavy mud separation.

Durable & less

maintenance

The centrifugal casting bowl from duplex stainless steel, Tungsten carbide tiles for screw

protection, tungsten carbide inserts for mud distribution port and solids discharge port, SKF

bearings to give the centrifuge maximum operation life with less maintenance.

Easy Operation Centrifuge and hydraulic driving system as well as the control system are all in one skid for

easy rig up. And the PLC system with smart control and safety protection for easy operation.



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A Hydraulic Pump Unit :

A1 EEx Electric Motor

A2 Variable Displacement Hydraulic Piston Pump, Bowl Drive

A3 Variable Displacement Hydraulic Piston Pump, Scroll Drive

A4 Controls A5 Oil Tank A7 Flow Meters

A6 Variable Scroll Speed, Variable Bowl Speed

A8 High Pressure Oil Filter A9 Pressure Gauges

A10 Oil Level Gauge A11 Oil Temperature Gauge

A12 Oil-Air Cooler A13 Return Line Oil Filter

A14 Shut Off Valve

B Bowl Drive

B1 High Speed Hydraulic Piston Motor

B2 Anti Cavitation Device B3 Semi-Flexible Coupling

C Scroll Drive

C1 Rotodiff Hydraulic Motor C2 Connection Block

D Centrifuge

D1 Centrifuge Bowl

D2 Centrifuge Scroll

FHD System Switzerland VISCOTHERM



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The full hydraulic system consists of A the Hydraulic

Pump Unit, B the Bowl drive hydraulic motor, and C the

Scroll drive (Rotodiff).

The hydraulic pump unit A feeds hydraulic oil to the

scroll drive C and the bowl drive B by means of two

separate and individually independent operating circuits

An electric motor A1 drives the combined pumps A2 and

A3. Each operating circuit is equipped with its own

hydraulic pump and its own controls. The pump unit

contains all setting devices and safety valves, as well as

pressure gauges.

With this system, the bowl's rotational speed as well as

the scroll's differential speed may

be manually adjusted independently from one another,

continuously and infinitely variable during the

centrifuge’s operation.

FHD System Switzerland VISCOTHERM



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The ROTODIFF is a low speed, radial roller piston hydraulic motor with a constant

displacement. The pistons exert a tangential force on the cam, causing a differential speed

between the bowl and the scroll. The housing H of the ROTODIFF is attached to the

centrifuge bowl and the rotor is attached to the scroll by means of a splined output shaft H1.

The ROTODIFF contains a transfer seal D, which permits the hydraulic oil to

flow efficiently from the stationary to the rotating part.

FHD System Hydraulic Motor Rotodiff


The ROTODIFF is a radial roller piston motor. The curved cam a is provided with an

undulating runway where the rollers g are pushed against.

Via the pistons e the rollers are provided with radial propulsion, producing a torque with

respect to the rotor b by deflection of the rollers on the curved cam. In turn, the pistons are

loaded with pressure by the cylinder chamber f through the distributor c, which is connected

to the curved cam. Consequently, the single chambers are alternately connected by and

subjected to pressure (work phase) and run-back (interval phase).

Learn more: http://www.viscotherm.com/en/technologie/rotodiffr/


http://www.viscotherm.com/en/technologie/rotodiffr/

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Operation Control Setting bowl's rotational speed: At the adjustable throttle valve, the rate of

flow moving to the bowl drive can be continuously adjusted. The flow rate is

directly proportional to the bowl speed. The quantity of oil can be read off the

flowmeter.

Control of the scroll drive: By means of the adjustable throttle valve, the

differential speed can continuously be adjusted. The rotational speed of the

scroll drive (differential speed) is directly proportionate to the quantity of oil

flowing to the Rotodiff, which is indicated by the flowmeter.

If the preset pressure value of the clearing-out pressure has not been

attained, the hydraulic system operates based on the set differential

speed. Once the clearing-out pressure is exceeded, the differential speed is

increased automatically, thereby clearing out (removing)

the mass contained in the centrifuge.

FHD System Operation Control



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FHD System Control and Monitoring


Monitoring & Safty Oil Level shutdown point: Once the low level has been triggered, a level

alarm is activated and the complete drive is shut down instantly.

Temperature alarm point: Once the temperature of 70°C has been exceeded,

a temperature alarm is triggered. The HIGH TEMPERATURE alarm will sound,

and the bowl drive will be shut off.

Manometric point p2: Whenever the pre-selectable manometric value p2 has

been exceeded, a pressure alarm p2 is triggered. The level (amount) of this

alarm threshold may vary according to the process type and requirements

involved. Feeding of product to

the centrifuge is stopped.

Manometric point p3: Whenever the pre-selectable manometric value p3 has

been exceeded, a pressure alarm p3 is triggered. The level (amount) of this

alarm threshold may vary according to the process type and requirements

involved. The bowl drive will be shut off

All above signals are linked to an internal monitoring logic so that any break of

a cable advised by an input signal triggers the appropriate emergency function.

Monitoring/surveillance of the signals is ensured during the entire operating

sequences.


GN Facilities No. 1 & No. 2 China Factory



GN Facilities Workshop & Office



GN Facilities GN Solids America



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China Headquarter

Hebei GN Solids Control Co.,Ltd

• Email: [email protected]

• Web: www.gnsolidscontrol.com

• Tel: +86-316-5276988

• Fax:+86-316-5276990

• Address: No.3 Industry

Road,Dachang Chaobai River

Development Area,Langfang,China

065300

• Location: 40KM to Beijing

International Airport

Contact GN Branches

USA Branch Russia Branch

GN Solids America LLC


Web: www.gnsolidsamerica.com

Tel: +1-713-8780880

• Fax:+1-832-288-5917

• Address: 6710 Windfern Road,

Houston, TX 77040, USA

GN Solids Russia


• Web: www.gnsolidscontrol.ru

• Tel: +7 925 304 25 70

• Address: г.Москва.Радонежского

Сергия ул.

mailto:[email protected]



http://www.gnsolidsamerica.com/


http://www.gnsolidscontrol.ru/

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gnlw363 d fhd decanter centrifuge