V7 dry-type sand making equipment developed by NFLG makes breakthroughs in the vertical-shaft crushing, air screening and other key technologies and uses the five-hole impact rotor structure, the state-of-art technology to crush, shape and grind raw materials entering crushers through rotors using the "rock breaking" centrifugal crushing method. This achieves self-generated crushing and high-strength self-generated crushing, thereby efficiently improving the particle shapes of finished sand and increasing the output of fine aggregate.

The V7 sand making equipment uses the air screening technology to achieve perfect classification on transfinite particle size, finished sand and sand powder, thereby maximizing the screening efficiency, and uses intelligent control to make the fineness modulus of finished sand adjustable. In addition, the equipment uses the dust collector technology with offline ash removal pulse to efficiently control the content of rock powder in finished sand and operate the whole system in a closed negative pressure environment, thereby realizing the value ideas of green and intelligent sand making for environmental protection.