The Pressure Belt Filter is to pump coolant into upper chamber via the pressure of pump, then clean coolant will pass the cloth forcibly. Use cloth to filter the ductile chips and the long chips will be accumulated into a more high-precision filter layer. As the upper chamber pressure is too high or reaches a preset timing, the chips will be dried and scraped out. It will use compressed air and a brush to clean the cloth. It is reusable and no consumption on filtration material.