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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.

Model V7-60 V7-100 V7-150
main machine US7-474H US7-636H US7-636H/SKY
screen AS2500 AS3900 AS3900T
feeding size(mm) 0-13 0-13
0-13
max processing capacity(t/h) 60 100 150
total power(kW) 430 780 870
L*W*H(m) 28×9×20 35×10×23 35×10×28

01

US7 Vertical-shaft Impact Crusher
Five-hole impact rotor structure
The unique material throwing hammer and T-shaped structure significantly increases the output of particle sizes ranging between 0.15mm and 0.6mm.
The particle shape improves significantly, with the void ratio less than 42%.
The service life of a five-hole impact rotor is five times that of a normal rotor.

02

AS Air Screen
Vibration transmission and dispersion technologies

The vibration screen combine separation and selection technologies

The intelligent air regulation for air blowers can control wind force during screening and clean the surfaces for sand

The new polyurethane mesh can prevent blockage and improve the screening efficiency.

The fineness modulus is adjustable with the stability reaching ±0.1.

03

Sand Powder Separation Technology
The air separation technology with inertial classification requires no energy consumption.
The adjustable guide plate design maximizes the air flow path.
Corse particles (with a size bigger than 40μm) in the reclaimed sand powder improve the quality of finished sand, thereby ensuring a reasonable graduation of finished sand.
The technology can reduce power consumption during dust collection and improve dust collection efficiency.

04

Dust Collector
The high-efficiency bag dust collector provides the offline ash removal dust collection function to achieve a dust collection efficiency of 99%.
Polyester peritoneal filter bags provide excellent filtering performance, with the carbon concentration less than or equal to 20 mg/m³ (under rated conditions).
Automatic differential pressure signal feedback brings high-performance automatic pulse control.

05

Electronic Control System
The unique algorithm and control mode are used.
The graduation and fineness modulus of finished sand are adjustable, and the sand powder content is controllable.
Intelligent management for quick-wear parts is used.

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