The impact crusher is used to process materials with a side length of 100 to 500 mm, and its compressive strength can reach up to 350Mpa. The main components of the impact crusher include the impact plate, adjustment device, rotor, box, plate hammer and driving device. Here, I will introduce to you each component of the counterattack.
1. Impact plate
The function of the impact plate is to withstand the impact and crushing of materials knocked out by the blow hammer, and to bounce the crushed materials back to the crushing area for crushing again. The shape and structure of the impact plate have a great influence on the crushing efficiency. There are many forms of counterattack plates, mainly broken lines and arcs. The structure of the zigzag counterattack plate is simple, but it cannot guarantee the most effective impact of the material; the arc-shaped counterattack plate can make the material bounce off the counterattack plate and form a fierce collision with each other at the center of the circle to break, and its crushing effect is higher. Impact plates are currently mostly made of impact-resistant and wear-resistant materials such as high manganese steel.
2. Adjustment device
The adjustment device of the impact crusher also serves as the overload protection device of the entire machine. When foreign objects (such as iron blocks, etc.) or unbreakable objects enter the crusher, the impact plate can automatically retreat and bounce up, allowing the foreign objects to pass through the crusher. machine to prevent foreign matter or unbreakable objects from causing damage to the equipment. The counterattack plate adjustment system is often hydraulic adjustment or nut adjustment.
3. Rotor
The rotor structure of impact crusher has three types: integral type, combined type and welded type. Most of the rotors of the crusher adopt an integral cast steel structure. This rotor has a large moment of inertia, is strong and durable, is convenient for placing the blow hammer, and can meet the needs of crushing work. Welded structures can also be used for small impact crushers. This type of rotor is easy to manufacture and easy to balance, but has poor strength and durability.
4. Box body
The frame of the impact crusher is divided into three parts, which is welded with iron plate and section steel. The inner wall of the body is equipped with a lining plate made of steel plate. Small doors are provided on the left and right sides of the machine body to facilitate maintenance and replacement of wear-resistant parts.
5. Blow hammer
The blow bar of the impact crusher is fixed on the rotor. It is an important part of the crusher. The shape of the blow bar is closely related to the fastening method and working load. The design of the blow bar should meet the requirements of reliable operation, easy loading and unloading, and improved metal utilization of the blow bar. Blow hammers are generally made of high-iron cast iron, high manganese steel and other wear-resistant alloy steels.
6. Driving device
The driving system of the impact crusher adopts the method of motor, V-belt and crusher, which can effectively improve the starting performance of the motor and enable the motor to start and run smoothly. The belt drive method can play a dual overload protection function. The motor power required by the drive system is low, which greatly reduces operating costs. This drive solution is economical and applicable, has excellent performance, is safe and reliable.
