1. Working Principle

An impact crusher is a device that uses impact force to crush materials. Its working principle is as follows: the material enters the machine body through the feed pipe. Under the action of the high-speed rotating rotor, the material is hit by the plate hammer on the wall of the crushing chamber, and then rebounds back to the rotor plate hammer to receive a second impact until it is crushed into the required particle size. During the entire crushing process, the rotor rotates continuously at high speed, forming a strong impact force, continuously impacting and crushing the material to complete the crushing operation.

2. Crushing process

1. Crushing angle

The crushing angle of the impact crusher refers to the angle at which the material contacts the plate hammer after entering the crushing chamber, which is generally 90 degrees. This angle can give the plate hammer a larger impact area, thereby increasing the impact force and making the crushing efficiency higher.

2. Feed port

The feed port of the impact crusher is generally designed in a V-shape. This design can pre-separate the material before entering the crushing chamber, and can also make the material flow to both sides when the material is crushed, thereby improving the crushing efficiency. In addition, the size and width of the feed port are also one of the important factors affecting the crushing effect, and should generally be reasonably adjusted according to the size and hardness of the material.

3. Discharge port

The discharge port of the impact crusher refers to the port where the material is discharged from the crushing chamber. Its size and position have a great influence on the crushing process. Generally, the discharge port should be set at the bottom of the crushing chamber, which can make the material easier to discharge and avoid backflow during the crushing process.

4. Impact plate and plate hammer

The impact plate and plate hammer of the impact crusher are important components for creating impact force. Their material and design have a great influence on the crushing effect. The common materials of impact plates and plate hammers on the market are high manganese steel, alloy steel, etc. Generally, the harder the material and the higher the strength, the better the crushing effect.

[Conclusion] This paper analyzes the working principle and crushing process of the impact crusher in detail, focusing on the influence of key factors such as crushing angle, feed port, and discharge port on the crushing effect, which has important reference value for the use and maintenance of the crusher.