# GEA Westfalia SC 70 Self-Cleaning Industrial Clarifying Centrifuge
– 37 kW
Overview
Industrial self-cleaning clarifying centrifuge manufactured by
Westfalia Separator AG, part of GEA Westfalia Separator, designed for
the centrifugal separation and clarification of liquid products
containing low concentrations of suspended solids.
The equipment is configured for processing vegetable and fungal
fermentation broths, botanical extracts, protein broths and other
liquid products requiring fine-particle separation. It can also be
used downstream of a decanter or another preliminary separation stage
to improve liquid clarification.
The centrifuge features a hydrohermetic configuration, an automatic
Hydrostop solids discharge system, vertical motor drive, a centripetal
pump impeller for pressurised clarified-product discharge, and
associated feeding, discharge, instrumentation and control
components.
The equipment is identified by the manufacturer as SC 70, with the
technical configuration reference SC 70-06-777. The identification
number is 1719 078.
1. Main Centrifuge Assembly
Manufacturer: Westfalia Separator AG
Brand: GEA Westfalia Separator
Model: SC 70
Technical configuration: SC 70-06-777
Equipment identification number: 1719 078
Equipment type: Self-cleaning industrial clarifying centrifuge
Manufacturing location: Oelde, Germany
Manufacturing year: 1998, as indicated in the lot title
The main assembly comprises the centrifuge frame, rotating drum,
vertical drive motor, belt transmission, product feed and discharge
connections, pressure chambers, solids collection vessel and
associated process components.
The system is designed to separate fine suspended particles from
liquid streams and discharge the clarified liquid under pressure.
2. Process Applications
The centrifuge is suitable for applications involving the
clarification and polishing of liquids with a low solids content,
including:
- Vegetable fermentation broths
- Fungal fermentation broths
- Botanical extracts
- Protein-containing broths
- Liquid products previously treated in a decanter
- Other compatible process liquids containing fine suspended
particles
The suitability of the equipment for a particular product depends on
its physical and chemical properties, solids concentration,
temperature, viscosity and required separation performance.
3. Process Specifications
The available technical documentation provides the following reference
operating parameters:
- Feed flow rate: approximately 3,000–8,000 litres/hour
- Maximum feed solids concentration: 0.8% v/v
- Separation temperature: 25–80°C
- Indicated hydraulic capacity: 50,000 litres/hour
- Drum solids chamber volume: 16 litres
- Total drum volume: 32 litres
- Clarified-product discharge: pressurised, using a centripetal
impeller
The hydraulic capacity is a reference value from the available
documentation and should not be interpreted as a guaranteed throughput
for every product. Actual performance depends on the material and
operating conditions.
4. Hydrohermetic Sealing System
The centrifuge incorporates a hydrohermetic arrangement that keeps the
product isolated from the atmosphere by means of a liquid seal.
This configuration is designed to reduce direct contact between the
product and air and limit oxygen incorporation during
clarification.
The clarified liquid is discharged under pressure through a
centripetal impeller, facilitating transfer to the next stage of the
production process.
5. Automatic Hydrostop Solids Discharge
The centrifuge features a Hydrostop automatic solids discharge system
designed to control the opening and discharge of accumulated solids
from the rotating drum.
The documented discharge configuration supports:
- Short partial discharges
- Long partial discharges
- Combined discharge cycles
- Automatic control of discharge timing
- Adjustment of discharge frequency to process requirements
- Reduction of liquid losses during solids discharge
- Improved control of the liquid content in the discharged solids
The functionality and current operating condition of the Hydrostop
system should be verified before commissioning.
6. Drive and Electrical Specifications
The main centrifuge drive consists of a vertical electric motor
connected to the rotating assembly through a belt transmission.
Motor specifications:
- Motor power: 37 kW
- Electrical supply: 380 V
- Frequency: 50 Hz
- Protection rating: IP55
- Thermal protection: Sensors in the motor windings
- Transmission: Belt drive
- Starting and speed regulation: Frequency converter
The electrical supply, motor condition, drive configuration and
compatibility with the intended installation should be checked before
connection.
7. Pressure Chambers and Operating Limits
The available documentation identifies two pressure chambers
associated with the equipment.
Reference specifications:
- Maximum permissible operating overpressure: 1 bar
- Maximum indicated operating temperature: 90°C
- Volume of the first pressure chamber: 0.06 m³
- Volume of the second pressure chamber: 0.02 m³
These limits refer to the documented pressure chambers and must not be
interpreted as the operating pressure rating of the entire centrifuge
without further verification.
8. Materials of Construction
The available documentation identifies the following materials:
- Product-contact components: Stainless steel
- Solids collection and discharge vessel: AISI 304 stainless steel
- Main frame: Lacquered cast iron
- Process pipework, valves and connections: Stainless steel
The precise grade of every product-contact component has not been
independently verified. Buyers should check material certificates and
compatibility with their intended process where product-contact
compliance is required.
9. Control and Automation System
The documented configuration includes an automatic control arrangement
for the centrifuge and its discharge cycles.
The system comprises:
- Siemens SCU8 timing programmer or equivalent
- Automatic discharge control
- Programming of short, long and combined discharge cycles
- Power cabinet
- Start and stop controls
- Frequency converter
- Discharge monitoring and control components
- Associated sensors and pneumatic connections
The presence, completeness and operational condition of the electrical
cabinet, programmer, frequency converter and other control accessories
should be confirmed during inspection.
10. Scope of Supply
The lot includes the centrifuge and the components shown in the
listing photographs that are mounted on or clearly assigned to the
machine, including:
- Main GEA Westfalia SC 70 centrifuge assembly
- Rotating drum
- Main 37 kW vertical motor
- Belt transmission
- Pressure chambers
- Stainless-steel solids collection vessel
- Product feed and discharge connections
- Process pipework and valves
- Pressure gauge and associated instrumentation
- Sensors and pneumatic connections
- Visible electrical wiring and associated components
The inclusion of the electrical cabinet, programmer, special tools,
spare parts, manuals and other accessories mentioned in the technical
documentation must be physically confirmed before purchase.
11. Condition and Inspection
The equipment is offered in its current condition and location. Its
operational status, separation performance, sealing integrity,
vibration levels and completeness have not been independently
verified.
A pre-purchase inspection is recommended to verify the identification
plate, drum and drive condition, motor and transmission, Hydrostop
discharge mechanism, control system, product-contact surfaces,
instrumentation and included accessories.
The buyer should also confirm whether maintenance records, operating
manuals, spare parts and any available technical documentation are
included.
12. Dismantling, Loading and Collection
The centrifuge is sold in its current installed location in Vícar,
Almería, Spain.
The purchaser is responsible for disconnection, dismantling,
preparation, lifting, extraction, loading and transport, including all
associated labour, tools and lifting equipment.
Removal must be carried out by suitably qualified personnel, following
safe electrical isolation, complete depressurisation, drainage and
appropriate preparation of the machine and its connected process
systems.
The purchaser must assess the equipment's actual dimensions, weight,
access routes and lifting requirements before collection.
Loading, transport and packaging are not included in the sale.
13. Location
Vícar, Almería, Spain.
Important Information
All specifications and technical data are provided for information
purposes and are based on the available identification plates,
photographs and technical documentation.
The listed flow rates and operating limits are reference values, not
guaranteed performance figures. No guarantee of operation, throughput,
separation quality, sealing integrity, regulatory compliance or
suitability for a particular product is implied.
Buyers should carry out the inspections, measurements and tests they
consider necessary before purchase and verify the actual scope of
supply and condition of the equipment.
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