after dirty liquid flows into dirty liquid tank, pump starts to run, vacuum becomes in chamber, then dirty coolant enters into the vacuum chamber through filter paper, the coolant is cleaned, then transported into the main machine by pump.

Some impurity is adsorbed on the paper and some clean liquid is stored in the tank. When the paper is too dirty to use, the signal system will send out commanding, then driving reducer will replace the paper automatically, after that, the machine to next recycle.

The machine with PLC automatic control system and automatic monitoring system, and high filtering efficiency, draining dirty automatically, winding paper automatically as while as troubleshooting, overload protection’s functions, they are widely use for purifying the grinding coolant.