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Disc Filters

The disc filters Boozer are available with filter sizes of up to 184 m2 filtration area.

All components like filter segments, shaft, filtrate pipes, control head or filter trough are of most modern design, ensuring the excellent hydraulic capacity and the easy maintenance of these filters.


Filter Sectors

Each filter disc consists of up to 30 metallic sectors with following characteristics:

  • optimal hydraulics for quick drainage of the filtrate piping and efficient cake discharge
  • easy mounting and stable seat on the shaft by bayonet bell
  • light weight (< 19kg) for easy handling
  • specific bell form for:
    • quick replacement and solid seat of the filter cloth
    • reliable and simple fixing of the filter bag by cable fastener


Filtrate Pipes and Shaft

The filtrate headers carry out the filtrate from the single sectors to the control head. They are especially characterised by:

  • well-sized trapezoidal cross-section of the single pipes
  • optimal assembly inside the shaft for non-abrasive products


Control Head

The disc filters Boozer have a high performance control head with pre-separation that:

  • reduces the pressure losses by early separation of the filtrate from the air
  • prevents the carryover of the filtrate into the dewatering zone, even at high filter speed


Filter Trough

Depending on its size, the disc filter Boozer consists of either a common trough or a „Joint-Single“ trough. Both designs have following advantages:

  • slurry homogenisation without agitator, i.e. without leaks, without maintenance, without power requirement and with high availability
  • equal slurry level at all discs, i.e. even cake thickness at all discs
  • automated operation with slurry level control, i.e. without permanent slurry overflow
  • 50% submergence of the discs, i.e. maximum cake forming zone
  • well-sized emergency overflow (100% of inlet can be managed)
  • well-sized drain valves for quick emptying of the trough


Cake Discharge with Snap Blow Valve

The air blow back is electronically controlled by snap blow valve that enables:

  • an exactly timed pulse, i.e. a complete cake discharge
  • blow back at low overpressure, i.e. longer cloth lifetime
  • complete discharge even of thin cakes (4-5 mm)


Cloth Cleaning

The online cloth wash system cares for a long cloth lifetime.


Filter Drive

The size of the filter drive is designed for each individual application that enables a reliable and safe filter operation, even at high speed (up to 6 rpm) and with heavy and thick cakes.

 


Automated Operation

According to the control philosophy of BOKELA, the disc filters Boozer are operated fully automatically. Two control loops care for a safe and reliable filter operation.

 


Simple Maintenance, High Availability

The disc filters Boozer are maintained easily and with minor efforts:

  • no agitator
  • permanent walkways between the discs
  • simple handling of light weight sectors (< 20kg each)
  • easy and quick sector fixing by bayonet belt
  • easy cloth replacement
  • online cloth cleaning
  • maintenance-free shaft sealing

 


Filter Sizes

TypeXSSMIMEL
Disc diameter
[m]
2.23.23.94.15.6
Filtration area
[m2]
12 - 4830 - 12040 - 6046 - 18488 - 176
Number of discs
per control head
2 - 82 - 82 - 62 - 82 - 6

 

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© 2011 BOKELA GmbH Karlsruhe, Germany