Product Overview
The vertical sand-making machine employs an advanced composite crushing principle combining stone-on-stone and stone-on-iron mechanisms. Through an optimised deep-cavity rotor design and specially structured crushing chamber, it achieves highly efficient material fragmentation and precise shaping. The equipment features a hydraulic cover-opening device and automatic lubrication system, facilitating more convenient maintenance. A unique air recirculation system effectively minimises dust emissions, ensuring a cleaner working environment.
Employing advanced vibration damping and noise reduction technology, the unit operates below 75 decibels, meeting environmental standards. Variable frequency drive technology and optimised airflow design significantly reduce energy consumption, achieving over 25% greater energy efficiency than conventional equipment. Its compact structure and flexible installation accommodate diverse production site layouts, making it an ideal choice for modern sand production lines.
Working Principle
1. Feeding and Distribution Stage: Material enters uniformly through the feed inlet at the crusher’s top. A specially designed dual-channel distributor precisely divides the material into two streams: approximately 70% enters the high-speed acceleration zone at the impeller’s centre, while 30% forms a material curtain layer along the impeller periphery, preparing thoroughly for impact crushing.
2. Acceleration and Impact Stage: Material entering the impeller is accelerated to 60-75m/s by centrifugal force before being ejected through the flow channel. It undergoes multi-level, intense collisions with surrounding free-falling material, achieving highly efficient ‘stone-on-stone’ crushing while minimising wear on abrasion-resistant components.
3. Collision and Shaping Stage: Within the specially designed vortex crushing chamber, the material undergoes repeated collisions, friction, and grinding. Particles are progressively refined and reshaped, ultimately producing high-quality manufactured sand with rounded grains and a well-graded particle size distribution.
Core Components of Vertical Compound Crusher
1. Rotor Assembly System
Features a high-strength alloy steel forged main shaft, equipped with Swedish SKF self-aligning roller bearings. The bearing housing integrates temperature monitoring and automatic lubrication systems, ensuring stable rotor operation at 3000 r/min.
2. Wear-Resistant Component System
Peripheral liners are fabricated from Cr26 high-chromium alloy with a hardness of HRC58-62. Employing a modular design, individual wear components weigh 30-50kg for straightforward replacement and maintenance.
3. Hydraulic Cover Opening System
Comprising a hydraulic power unit, synchronised hydraulic cylinders, and a safety locking mechanism. The electro-hydraulic control system enables smooth cover opening within 15 minutes, providing ample maintenance access.
4. Lubrication System Assembly
Features a dual-gear pump oil supply system equipped with an oil cooler and precision filter. Lubrication circuits incorporate pressure protection and flow monitoring devices to ensure reliable lubrication.
5. Electrical Control System Assembly
Utilises a Siemens S7-1200 PLC controller with a 10-inch colour touchscreen. Capable of operational parameter logging, fault diagnosis analysis, and remote communication functions.
