Principles
In basket centrifuge, the solids & liquids are separated by centrifugal force using a filter media (usually a cloth) mounted over supporting mesh, which are together supported inside the rotating basket. The slurry to be filtered is fed through the feed nozzles to the basket and due to centrifugal force the liquid is forced out through the filter media while solids are retained within the filter media inside the basket. These solids then separated or discharged by various discharging methods namely - manually, bag lifting basket, through scrapper, operated manually pneumatically / hydraulically, for which different models are available.

Suspension / Mounting :
All the bottom driven centrifuges can be supplied either in 3 point type suspension or the newer 4 point type mounting (on VISCO Damper / Sordino Damper) anti vibration mounts.

MOC. of Centrifuge :
Carbon Steel, Stainless Steel, Rubber Lined, Halar Lined.

Advantages of 4 Point mounting :

• Level of vibration is much lower & operates very smoothly.
• Can be mounted on upper floor and can be easily relocated.
• Almost negligible maintenance cost.
• Working area is free from abstrcts and a clean area can be maintained.

Types / Models of Centrifuges :

• Pilot Plant Centrifuge
• Bottom driven Top Discharge Type
• Bag Lifting Type .
• Bottom Discharge Type with/without Scrapper
• Top driven Bottom discharge

Pilot Plant Centrifuge :
The Pilot plant centrifuges are used for taking small trial batches in plants. The same centrifuge can be optionally mounted on movable trolley for shifting purpose and the trolley is leveled by suitable locking screw pads provided at the four ends.

Bottom Driven Top Discharge Centrifuge :
Bottom discharge centrifuge is the most versatile & basic model of basket Centrifuge for solid & liquid separation. After centrifugation the solids are scrapped and removed manually from top.

Bag Lifting Centrifuges :
n these type after centrifuging the solids are unloaded by lifting the basket top along with filter bag and solids. The filter bag is fitted with removal basket top with a bag holding ring. The ring holds the filter bag firmly while filtering and lifting.

Advantages :

• Easy and fast unloading.
• Complete discharge of solids.
• Original Crystal Structure will remain intact as there is no scrapping.
• Reduced human contact.
• Reduction in batch time.

Bottom Discharge Centrifuges :
In these type the centrifuged solids are scrapped through a scrapper operated either manually, pneumatically or through hydraulic cylinder and discharged through basket bottom plate pockets through suitable chute.

The centrifuge is driven at 3 speeds i.e. the feed speed, centrifuging feed and scrapping speed (around 60 rpm)

The drive motor is controlled by variable AC inverter drive to vary basket speed with built in dynamic braking system. The AC drive is incorporated with microcomputer and has a facility to interface with programme logic controller(PLC) for complete automation.

Top driven Bottom Discharge :
The Centrifuge is single point suspension, where the basket is mounted over the central spindle which is suspended at top in the bearing housing. The cake is discharged at bottom through the pockets provided in the centre of the basket.