The Agitated nutsche filter is a versatile machine used for drying as well as filtering. These machines are used in the manufacturing process of various chemicals, pesticides, insecticides, dyes, food products and pharmaceuticals. The unit consists of a totally enclosed and sealed cylindrical shell fitted with a agitator assembly which moves horizontally as well as vertically.
The cylinder operates under pressure or vacuum or both. A filter plate with filter cloth is fitted at the bottom of the shell for separating liquids from solids. The cake is retained on top of the plate. The upward and downward movement of the agitator assembly is utilised for cake washing, compressing, drying and discharge of the cake. A vacuum pump connected to receiver is installed for discharging of liquids and vapour collection. The cylindrical shell can also be provided with a jacket.
Salient Features:
- Closed batch types operation
- Repeated & effiecient wash with reslurrying.
- Vacuum or pressure filtration
- Operation from Control panel
- No toxic fumes in operating area
- Very high Solvent recovery
- Minimum Labour required
- Drying of wet cake under Vacuum
Application
- Pharmaceuticals
- Pesticides
- Organics/Inorganic Chemicals
Material of Construction
- Carbon Steel
- Stainless Steel
Filtering Operation :
- Slurry is charges to gravity or pump vacuum is applied in bottle section through filte receiver
- Filtrate is collected through the filter bed & collected in Receiver, located below the lower compartment of filter & cake layer begin to form slowly on filter plate.
- After 1st filtration is over, cake shall have almost 10 to 30% moisture.
- After 1st stage filtration, wet cake can be reslurried & spray washed by rotation agitator in clockwise & anticlockwise direction with up & down movement of agitator.
- Cake is further pressed & Squeezed by rotating agitator in up & down motion to minimize liquid content in wet cake. Cake is discharged through Discharge nozzle by rotating agitator in reverse direction.
Drying Operation:
- For maximum recovery of liquid & drying vacuum is applied on top chamber & cake is heated by applying hot water / steam to form solvent vapour, which is turn is condensed in the condesor & collected in receiver.
- Cake is finally discharged automatically by vertical