Impact crusher and hammer crusher different

As equipment widely used in the field of crushing, impact crusher and hammer crusher are often compared. These two equipments have similarities and differences in crushing principle and structure. We often use them for secondary crushing, easy to operate and affordable, but each has unique application characteristics. Below, we will explore their differences in practical applications!

Structure and crushing chamber design

◉ Overview of impact crusher structure

The core components of impact crusher include rotor, plate hammer, impact plate, etc. The impact plate is rigidly connected to the rotor to ensure efficient crushing.

◉ Overview of hammer crusher structure

The hammer crusher consists of rotor, hammer head, hammer frame, etc. The hinged connection of the hammer head ensures the stability of the operation.

◉ Characteristics of crushing chamber

The impact crusher has a spacious crushing chamber, which provides sufficient space for the material to move, so that the impact force can be used more effectively for crushing. The design of the hammer crusher is relatively compact, which limits the impact effect.

The impact crusher adopts a multi-cavity crushing structure, which makes the crushing effect more thorough.

Working principle and wearing parts

◉ Working principle of hammer plate and hammer head

impact crusher:

hammer crusher:

The impact crusher generates a strong impact force through the high-speed rotation of the plate hammer, thereby crushing the material. The hammer crusher uses the impact and shearing effect of the hammer head to crush the material. Although these two crushing methods are different, they effectively achieve material crushing through different principles.

◉ Wear resistance of wearing parts

The wear of the plate hammer of the impact crusher is mainly concentrated on the side facing the material, and its metal utilization rate can be as high as 45%-48%. The hammer head of the hammer crusher wears in multiple directions, and the metal utilization rate is relatively low. The two are in sharp contrast.

Discharge particle size and adaptability

◉ Discharge particle size adjustment method

The hammer crusher only adjusts the discharge particle size by replacing the bottom screen plate, while the impact crusher has a variety of discharge particle size adjustment methods, which can be flexibly adjusted by adjusting the rotor speed, changing the gap between the impact plate and the plate hammer, and adding or removing gaskets.

◉ Moisture content and blockage of materials

The impact crusher is equipped with heating devices on the feed chute and impact plate. The anti-sticking design makes it suitable for materials with high moisture content and not easy to block. In contrast, the hammer crusher is prone to blockage when handling water-containing materials because of the lack of heating devices.

Crushing effect and application

◉ Comparison of crushing effect

The impact crusher has an excellent crushing ratio, which can reach more than 50, and the particle shape of its finished material is also quite good. The crushing ratio of the hammer crusher is usually between 10-25, and there are more needle-like particles in the particle shape, and the dust content is high.

◉ Differences in application areas

The impact crusher is usually used as a secondary crushing equipment, while the hammer crusher is more common in cement production lines. It is often used as a crushing equipment for limestone raw materials, and can also be used as a primary crushing task in sand and gravel co-production projects.

Use and Maintenance

◉ Equipment Maintenance Features

The frame design of the impact crusher usually adopts an advanced three-part structure, so that maintenance personnel can easily replace the plate hammer, impact plate and other components and perform necessary maintenance work by simply opening the rear casing of the crusher. In contrast, the maintenance of the hammer crusher is relatively cumbersome, requiring the replacement of many hammer heads and screen plates, and the maintenance and maintenance costs are high.

In summary, by comparing the use and maintenance characteristics of the impact crusher and the hammer crusher, we can have a more comprehensive understanding of the performance of these two crushers. I hope this information can provide you with valuable reference when selecting equipment.