Water curtain dust removal preliminary treatment unit and air conditioning system

The utility model provides a water curtain dust removal preliminary treatment unit and air conditioning system. Water curtain dust removal preliminary treatment unit includes water curtain dust removal humidification passageway, interior circulating water channel, interior circulating water pump, water curtain filter screen, internal circulation line, water curtain generator, wet film and outer loop filter water tank, the wind channel rear of water curtain filter screen is located to the wet film, and interior circulating water channel locates the bottom of water curtain filter screen and wet film, and circulating water channel in interior circulating water pump's water inlet is connected, delivery port pass through internal circulation line and connect water curtain generator, water curtain generator on the water curtain filter screen and/or wind channel the place ahead of water curtain filter screen form the water curtain, the air that has cotton dust is successively seen off by the air outlet of water curt