Rotary Vacuum Drum Filters

Rotary Vacuum Drum filters are used as filtration of liquid/ effluent/ mother liquor of the solids. The vacuum created by Vaccum pumps are the driving force utilized in the filtration operation.

Rotary Vacuum drum filters are available in the following models.

1 Rotary Vacuum drum filters – Standard model (RVDF)
2 Rotary Vacuum drum Filters – Belt type (RVBF)

 

Our Standard Range / Capacity / Size: 3 ft to 12 ft diameter and with length varying from 3 ft to 20 ft on both models.

Salient features of Rotary Vacuum Drum Filters – Standard model (RVDF):

1 The rotary drum is divided into a number of self contained air tight cells, which are connected to ports in a trunnion that rotates against a static valve head.
2 The valve head is usually divided into three sections enabling the operation sequence of cake formation, cake drying, and cake discharge.
3 The outer surface of the drum is covered with natural or synthetic fiber filter cloths, gauze or other media dependant upon the material to be filtered.
4 The rotary drum supported at either end on lubricated trunnion bearings is driven by an electric motor through a variable speed worm reduction gear system. The speed of the drum rotation can thus be varied to suit optimum operating conditions. The drum is dipped in a slurry trough.
5 The trough is installed with an oscillating type agitator supported by self-aligning bearings and driven by an electric motor via a reduction gear to prevent settlement of the suspended slurry solids.
6 The filter cake is dislodged through a blade arrangement into the solid trough/ conveyor.

 

Salient features of Rotary Vacuum Drum Filters - Belt Type (RVBF):

1 The rotary drum is divided into a number of self contained air tight cells, which are connected to ports in a trunnion that rotates against a static valve head.
2 The valve head is usually divided into three sections enabling the operation sequence of cake formation, cake drying, and cake discharge.
3 The outer surface of the drum is covered with natural or synthetic fiber filter cloths, gauze or other media dependant upon the material to be filtered.
4 The rotary drum supported at either end on lubricated trunnion bearings is driven by an electric motor through a variable speed worm reduction gear system. The speed of the drum rotation can thus be varied to suit optimum operating conditions. The drum is dipped in a slurry trough.
5 The trough is installed with an oscillating type agitator supported by self-aligning bearings and driven by an electric motor via a reduction gear to prevent settlement of the suspended slurry solids.
6 The cake discharge is assisted by a sharper radius of curvature of cloth compared to that of the cake. At the discharge point, the flexing of the cloth tends to extrude cake lodged in the interstices of the cloth weave.
7. Air Purging also can be provided on request or as per process requirement.
8 Jet sprays are provided to scour off any particles of cake that may still adhere to the cloth.