Impact crushers are widely used crushing equipment in industries such as mining, building materials, and metallurgy. Their core working principle is based on "stone-on-stone" or "stone-on-iron" crushing methods. This equipment uses a high-speed rotating rotor to accelerate and project material, causing it to collide and rub against each other within the crushing chamber, thus achieving efficient crushing.
Work Process Explanation: Material is first fed into the feed hopper by a conveyor and divided into two parts by a distributor. One part of the material enters the high-speed rotating impeller, where it is accelerated to a speed of 60-70 m/s and projected out through three channels. This high-speed projected material collides with the other part of the material that falls naturally, forming a vortex, causing the material to undergo multiple impacts, friction, and grinding within the crushing chamber. Finally, the crushed material is discharged from the lower discharge port.
Characteristics of Crushing Methods: Impact crushers mainly use two crushing methods: "stone-on-stone" and "stone-on-iron." The "stone-on-stone" method is suitable for medium-hard, highly abrasive materials. The material impacts and rubs against the lining within the crushing chamber, reducing direct contact between metal components and lowering wear. The "stone-on-iron" method, on the other hand, achieves crushing through direct impact between the material and the outer protective plate. The equipment can also control the finished product particle size by adjusting the impeller speed, producing manufactured sand of different fineness.
Equipment Advantages: Impact crushers have advantages such as a unique structure, high crushing efficiency, and good finished product particle shape. The ingenious airflow self-circulation design inside the vortex chamber effectively eliminates dust pollution. Because the material mainly impacts and rubs against the lining, angular contamination is reduced, extending the mechanical wear time. These characteristics make it the mainstream equipment in modern sand and gravel production lines.
