Main Structural Components of a Vertical Impact Crusher

A vertical impact crusher (commonly abbreviated as a vertical shaft impact crusher or VSI) is a highly efficient fine crushing device that utilises a high-speed rotating rotor to accelerate and project materials, causing them to collide with fixed liners (or each other) through intense impact, collision, and friction, thereby achieving crushing.

Main Structural Components:

1. Feed hopper: Receives materials to be crushed.

2. Distributor: evenly distributes the material to the centre of the rotor.  

3. Rotor Assembly: the core component, including the main shaft, bearing housing, rotor body, and discharge head/impeller (wear parts). The high-speed rotation of the rotor imparts energy to the material.  

4. Crushing Chamber: the space where material undergoes impact, collision, and crushing. The inner walls are equipped with peripheral liners/impact blocks (wear parts) and flow plates, etc.

5. Overflow/waterfall feed system: Some models allow material to bypass the rotor centre and directly enter the crushing chamber to participate in ‘stone-on-stone’ crushing.  

6. Motor and transmission system: Typically uses belt drive or direct drive to provide power to the rotor.

7. Frame: The main structural component supporting all other parts.

8. Discharge port/discharge hopper: The finished product is discharged from here after crushing.

9. Hydraulic or mechanical cover opening device: Facilitates inspection and replacement of internal wear parts.

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