Hydrocyclone Coolant Filters


  • Hydrocyclone classification offers a very simple and unique approach in gravity style clarification. There are no moving parts in this continuous operating centrifuge.
  • The classification begins when the dirty liquid is pumped at a pressure of 2 kgs./cm2 into the unequally designed head.
  • The head permits the dirty liquid to begin rotation as soon as it enters the helical axial distributor vane.
  • The action of the helical axial distributor vane introduces the dirty liquid into the cell.
  • In a narrow thin band.
  • This action reduces the intersecting angle between the incoming dirty liquid which reduces undesirable turbulences and aids to ensure maximum clarification through lower energy losses as the dirty liquid flows downwards through the helical distributor vane, a free primary vortex.
  • Develops along the outer wall of the carefully designed cell and accelerates downwards. Due to the high cyclonic action the solid particles accumulated near the inner wall of the cell are carried downwards and discharged with about 2.5% of liquid through the outlet orifice
  • Due to orifice opening a differential pressure generates between the inlet and outlet. This opening allows air to enter the cell creating a secondary rising low pressure vortex.
  • Clean fluid rises through the center opening of the distributor vane.
  • Discharged out through the outlet of the head.

The discharged solids with a small amount of liquid is collected in the sludge trolley.


  • The degree of separation is affected by the inlet and outlet pressure by the specific gravity of the coolant, the percentage of contaminates and the amount of foreign tramp oils.
  • As a general rules soluble oil and water mixture containing steel and abrasive particles can be clarified to a standard or 10-20 microns. Heavier particles may be clarified up to 5 microns.

MAINTENANCE : Under normal operating conditions the only wear area is the orifice which can easily be replaced by a spare one. Preventive measures must be taken to avoid the possibility of clogging the orifice. In case of clogging unscrew the orifice and clean with a pin.

GENERAL OPERATION : The series is designed for easy installation and efficient liquid classification. After a minor piping connection normally only a 3 phase power supply connection completes the installation.

The dirty coolant enters into the pump tank through wire mesh entry tray, which prevents any large pieces of sludge or foreign material from entering the system. The filter pump delivers the coolant to the Hydrocyclone unit where the particles are separated from the liquid and discharged through the outlet orifice into the sludge trolley.

As the sludge settles into the trolley, the surplus coolant overflows back to the inlet entry tray. The clean coolant is delivered to the machine from the Hydrocyclone through the clean coolant outlet.

The clean coolant accumulated in the tank receive from the pressure relief value can be utilized for another machine by fixing one more small pump.

The clean coolant accumulated in the tank receive from the pressure relief value can be utilized for another machine by fixing one more small pump.

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