1. Core parameters of equipment selection
Double-roller structure design
It is recommended to use 2PGC-1000×1500 tooth roller (roller diameter 1000mm/roller width 1500mm). This model uses high-strength alloy steel cast roller body, and the surface undergoes special heat treatment process, which improves wear resistance by more than 50%
The tooth shape adopts wolf tooth staggered arrangement design, and optimizes the tooth pitch and bite angle through three-dimensional dynamic simulation, so that the material forms a three-dimensional shear force field in the crushing chamber, and the crushing ratio can reach 1:5, which is especially suitable for coarse crushing of medium hardness materials
The matching automatic lubrication system can ensure that the bearings can continue to operate stably in high temperature and high dust environment
Power matching solution
200-ton processing capacity requires 2×132kW motors, and the dual motor drive achieves balanced torque distribution through a hard tooth surface reducer
Frequency conversion control realizes stepless adjustment of the speed of 8-15r/min, and cooperates with the current monitoring module to optimize energy consumption in real time, and automatically matches the optimal speed when crushing materials of different hardness
Soft start device can reduce 60% of grid impact current and extend the service life of electrical system
2. Key technologies for particle size control
Gap adjustment system
The hydraulic adjustment device adopts closed-loop control technology, and realizes dynamic stability of roller spacing of 20-30mm through laser rangefinder feedback, with an adjustment accuracy of ±0.5mm
The overload protection pressure is set to 18-22MPa. When abnormal load is detected, the hydraulic system can quickly release pressure within 0.3 seconds
Equipped with wear compensation algorithm, automatically correct the gap deviation caused by roller surface wear
Pre-screening device
The front vibrating screen (screen hole 40mm) adopts polyurethane elastic screen. Through the multi-stage amplitude adjustable design, it can reduce 30% of invalid crushing and reduce the sticking of gear rollers
The screen body is linked with the crusher to automatically reduce the feed rate when too large a piece of material is detected
The screening efficiency is more than 95%, which significantly reduces the system energy consumption and the wear rate of wearing parts
