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Centrifuges

Centrifuges
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Principles
In basket centrifuges, 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 basket 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.

Material of construction :
Carbon Steel, Stainless Steel, Hastelloy, Rubber Lined,
Fluoropolymer Coatings like Halar (ECTFE), PVDF (ETFE ), Teflon (PFA) etc.

Lining / Coating can be provided on the contact parts as well as
on the exterior body for prevention from spillage and corrosive atmosphere.

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 abstracts and a clean area can be maintained.
Types / Models of Basket Centrifuges :
  • Pilot Plant Centrifuge
  • Bottom Driven Top Discharge Type Centrifuge
  • Bag Lifting Type Centrifuge
  • Bottom Discharge Type Centrifuge with/without Scrapper
  • Top Driven Bottom Discharge Centrifuge
Additional Features (Optional)
  1. Residual Heel (Cake Removal System)
  2. Cleaning in Place (CIP)
  3. Leak Test as per DIN 24 400
  4. Nitrogen Blanking System
  5. Speed Indication with Zero Speed Switch
  6. Automation
  7. Cake Sensor






Centrifuge - Top Discharge Type

Centrifuge - Top Discharge Type
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Top 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. The machine works with quick loading and unloading and possesses a hassle-free functional life. Featuring bottom driven top discharge provision, the presence of precision manufactured external body support along with interlock safety cover makes this centrifuge highly preferred.

Features :
  • Mechanical clutch pulley
  • Standard 3 pendulum suspension
  • Variable frequency drive (inverter)
  • Inertia plate and anti vibration mounts (4 point mounting) Simple construction
  • Low maintenance cost
  • Suitable for sticky, hard and lumpy products

Application :
  • Centrifuges/Hydro Extractors are perfect for extraction of water/liquid in Pharmaceutical
  • Chemical, Textile Industries and ETP plants.






Centrifuge - Bag Lifting Type

Centrifuge - Bag Lifting Type
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Bag Lifting Type Centrifuge is the heavy duty centrifuges with fast acceleration and smooth running. After centrifuging process 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. The bottom opening of the filter bag allows the drainage of solids so as to make the discharge of solids simple and swift. It involves least manual labor and facilitates for effortless loading and unloading along with superior production capacity per batch.

Features :
  • Easy and fast unloading.
  • Reduction in batch time.
  • Complete discharge of solids.
  • Requires minimum manpower
  • Cake spillage on the floor is minimal.
  • Manual contact with cake is avoided
  • Easy cleaning of the basket in and out
  • More volumetric charge per machine available
  • The time required for cake removal is negligible
  • Full opening of the lid helps in easy maintenance
  • Original Crystal Structure will remain intact as there is no scrapping.

Application :
  • Chemical industries
  • Medicine manufacturing
  • Dyes and chemical processing






Centrifuge - Bottom Discharge Type

Centrifuge - Bottom Discharge Type
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The process of Filtration is similar to other types of centrifuges, the difference being in the method of unloading the Solids. The centrifuged solids are scrapped through a scrapper operated either manually, pneumatically or through hydraulic cylinder and the solids are discharged through openings provided in the Basket bottom and Bottom Base / Inertia Plate while the basket is rotating at a slow speed. 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 programmable logic controller (PLC) for complete automation.

Typical Bottom Discharge Cycle:
Feeding : A filter media is fixed to the cylindrical surface of a perforated basket. The feed slurry is directed to the basket wall using a feed pipe. Feeding is carried out while the basket is rotating at an appropriate speed. After the required cake is built, feeding is stopped. The centrifuge is run for some time to partially de-water the solids. Feeding can be repeated if there is adequate space for further build up of cake.
Washing : After feeding, washing is carried out by pumping wash liquid through the wash pipe.
Spinning : The basket is run at the spinning speed to complete the de-watering process.
Scraping : The speed of the basket is reduced to the scraping speed (slow speed). A scraper knife cuts the solids, discharging them through the chute.
Heel Removal - Optional : Some material remains on the filter media after scraping and is called residual heel. This heel can be removed by using the heel removal system.
Cleaning In Place - Optional : The centrifuge can be cleaned using a CIP system.
Dynamic Braking : The centrifuge basket is braked or slowed down using an electrical braking system.

The back EMF generated by the motor when idling is used to create the breaking impulse. This braking ensures a safe and friction free means of halting the rotating assembly.Separate heat sinks are given to ensure that the heat generated is dissipated effectively and the unit can be located even outdoors.

Advantages :
  • Cake Discharge in powder form.
  • Solid discharge in closed environment
  • Operation can be automated using a PLC.
  • Heel Removal System enables regenerating of filter media.
  • Toxic, allergic or hazardous material can be safely handled.
  • Minimum attrition of crystal due to scraping at low speeds.
  • No contact between product and operator during operation.
  • Drastic reduction in manual labour due to discharge of filter cake with help of a scraper.

Material of construction :
  • Stainless Steel, Carbon Steel, Hastelloy, Rubber Lined, Fluoropolymer Coating / Lining viz.- Halar (ECTFE), Teflon (PFA ).
  • Lining/ Coating can be provided not only on the contact parts but also on the exterior body for prevention from spillage and corrosive atmosphere.
  • Note: Bottom Discharge Centrifuge is advised for a non-sticky crystalline product which can be easily cut by the scraper blade.






Centrifuge - Top Driven Type

Centrifuge - Top Driven Type
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The Top Driven Bottom Discharge 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.





Hydro Extractor

Hydro Extractor
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Hydro-Extractors are also called Centrifuges. Centrifuges are for water extraction (dewatering, pre-drying) of textile materials. Values of approx. 15% for residual moisture content can be achieved depending on the type of textile fiber. Centrifuges with perforated drums or baskets (Ø up to approx. 2000 mm) which oscillate vertically in ball- and-socket joints suspended on three points are produced in various designs as pendulating, suspension, cage and vertical centrifuges, also with so called gliding support bearings as gliding support centrifuges or in horizontal resp. vertical arrangements as open-width, horizontal and warp-beam centrifuges, etc. Most centrifuges have electric drives for speeds of approx. 750-1200 rpm and are generally provided with automatic control over various ranges. For safety reasons, an interlocking lid is essential on a centrifuge so that the motor cannot be started until the lid is locked, nor the lid rose until the basket is stationary again after the machine has been stopped.





Rubber Lined Centrifuges

Rubber Lined Centrifuges
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We are a profound manufacturer of MS Rubber Lined Centrifuges that utilized for corrosive services. Manufacture using MS or rubber-lined MS or SS (AISI 304 or 316) at the contact surfaces, these ergonomically engineered centrifuges find applications in diverse industries such as Pharmaceutical, Chemical Plants and Fertilizer Plants owing to their superior quality. Apart from this, our MS Rubber Lined Centrifuges are based upon advanced technology, and can be customized as per specific requirements of the customers.

Our Rubber Lined Centrifuges withstand for :
  • Use in alkaline area upto pH 14
  • Full vacuum to 10 kg / cm2
  • Thermal stability in the range = -76°C to +160°C
  • The static electricity generated due to rotation of perforated basket is dissipated with the help of Hastelloy lined Basket Nut & earthing to housing strongly.






Halar Coated Centrifuge Machine

Halar Coated Centrifuge Machine
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We are specialized in developing Halar Coated Centrifuge Machine, which find use in API, pharma, medical and intermediates sectors to counter corrosive environments. The halar is a Fluoropolymer, which has high resistance against chemical and various other components such as liquid oxygen, alkalis, acids and organic solvents. Our Halar Coated Centrifuge Machine is approved by USFDA for its excellent performance and quality. Apart, the machine is halar coated to avoid expensive glass, hastalloy and titanium lining. The biggest benefit of the coating is that it can be repaired without any hassle on the site.

Our Halar Coated Centrifuge Machine withstand for :
  • Use in alkaline area upto pH 14
  • Full vacuum to 10 kg / cm2
  • Thermal stability in the range = -76oC to +160oC
  • The static electricity generated due to rotation of perforated basket is dissipated with the help of Hastelloy lined Basket Nut & earthing to housing strongly.






Pharma Centrifuge

Pharma Centrifuge
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Pharma Centrifuge offered comprise energy efficient machines that meet the demands of separating solids from liquids. These filtration type centrifuge finish featuring use of rotating basket for supporting of the filter media and delivers superior centrifugal force that forces liquid out through filter media with solid retained inside rotating basket. These also deliver higher centrifugal force that provides for optimum dryness of solids.

Features :
  • Centrifuges designed for achieving optimum solid/liquid separation
  • Can handle particle size distribution of 5 micron to several mm
  • Can handle slurry temperatures from -10 to 80°C
  • Suitable for sticky, hard, crystalline as well as amorphous materials
  • Can also supply centrifuges for other process conditions
  • Machines supplied with Inertia Plate as well as Anti Vibration Mounts
  • Fully opening outer case provision support.






Three Point Suspension Centrifuge

Three Point Suspension Centrifuge
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We offer a technologically designed range of three point suspension centrifuge machine that is manufactured by using quality steel. Our Centrifuges are extensively finds its application in various industries such as dairy, food,pharmaceutical, and chemical. These are well known in market due to their distinctive features like robust construction, easy to use, low maintenance, and highly efficient performance. These can be customized as per the client's requirements.

Application :
  • Used for separating liquids from solids by the chemical, pharmaceutical, textile and dyestuff industries.






Four Point Centrifuge

Four Point Centrifuge
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We are actively engaged in manufacturing and supplying a superior quality assortment of Four Point Suspension Centrifuge Machines. In a 4 Point centrifuge the vibration are isolated with a help of heavy Inertia Plate and Visco Dampers instead of a 3 point pendulum suspension where the vibration of centrifuge are isolated with a help of spring and Pendulum Bolts arrangement. Four point suspension centrifuges are manufactured using high grade factor inputs and advanced technology in compliance with international quality standards. In order to ensure their optimum quality, these are quality tested on various parameters by our quality inspectors. Also, these products can be customized according to the client's specifications and requirements.

Features :
  • The vibration transmission is nil & operates very smoothly.
  • Good and clean house - keeping possible
  • Can be mounted on upper floor and can be easily relocated.
  • No cost of R.C.C foundation
  • Can be shifted easily
  • Working area is free from abstracts and a clean area can be maintained.






Bag Lift Centrifuge

Bag Lift Centrifuge
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In a Bag Lifting type Centrifuge a chain pulley block and hoist is required to lift the bag out of the centrifuge and there are chances of product contamination in these devices, instead for a clean room application a specially designed hydraulic lifting device is used for lifting the basket top with filter bag along with solids after filtration. This arrangement consists of a central pillar with hydraulic ram movement inside the pillar attached to the lifting arm. These ram aides the movement of arm up and down with hydraulic power pack controlled through a control panel. After filtration the basket top cover with filter bag and solids are hooked to the arm of the bag lift arrangement to lift the bag vertically upwards and to turn around through its pillar centre pivot point, mounted on bearings and the solids are unloaded. This system eliminates the usage of any chain pulley block.The system is also available confirming to cGMP standards.





Pilot Plant Centrifuge

Pilot Plant Centrifuge
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Pilot plant centrifuges centrifuge is a portable, self-contained,centrifuge that is suitable for small batch processing. This centrifuge is a low cost solution for processes that require only small quantities of material and/or are done infrequently where a full size installation is not practical. 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. The portability of this centrifuge allows it to be easily transported to the process area when needed and then stored out of the way when not in use.

Features :
  • Solid 316L stainless steel construction for all process contact parts
  • Mounted on castors for easy portability
  • TEFC electric motor drive
  • Feed pipe
  • Wash pipe






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