How Does a Drag Out Filter Work?

Dirty coolant from your machine is returned to the dragout tank, where large, heavy particles settle out by gravity. A moving drag flight conveyor sweeps the tank bottom, carries these particles out of the dragout tank, and deposits them in a swarf container, leaving coolant free of any large particles.

The cyclone pump picks up dirty water from the lower tank and runs it through the cyclone to purify the water before it is returned to the upper tank. The cyclonic chamber operation is explained in the attached insert. An inline Y-strainer diverts larger particles from the cyclone. The water in the upper clean coolant tank is pumped to the machine tool using a separate pump.

Mike Petsch & Associates, Inc.