A perforated top of vacuum chamber is placed at the bottom of dirty coolant tank. Machine outlet lets dirty coolant in this tank. A pump sucks coolant through filter paper laid on top of vacuum chamber, leaving dirt on filter paper. Pump suction generates vacuum increasing dirt layer thickness & hence finer filtration.
After preset level of vacuum is reached, it is broken temporarily by opening actuated by-pass valve. Part of dirt-laden filter paper is pulled out to be replaced by fresh filter paper. Dirt is dumped in a bin while dirty filter paper is wound on a shaft. The operation is totally pneumatic & automatic.
Suitable for fine filtration of coolants used in grinding, honing, gun drilling & component washing applications.
• Better filtration is achieved using lesser filter paper. This gives better quality at lesser
• Total automatic pneumatic actuation.
• Can handle more viscous fluids.
• Low initial cost.
• Designed for individual machine unit.