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Largest Fixed Impact Crusher

Blow Bar Fixed Method

In impact crusher, raw materials are crushed by the force produced by the high-speed blow bar. Blow bar is the spare part directly contacts the raw materials, which makes it the main wear part in impact crusher.

As we know, the material of blow bar decides its wear degree, but the Fixed method of blow bar also means a lot. In this article, we mainly talk about the different Fixed methods of blow bar in impact crusher.

Blow Bar Fixed Method

In the following part, we mainly introduce three commonly used largest fixed impact crusher methods: screw Fixed, platen Fixed and wedge Fixed.

Screw Fixed

Screw Fixed method is to fix the blow bar by using several screws. In the Fixed method, the screws stay in the surface and are very easy to be damaged. Besides, once the screws are under strong shear force, they might part. This will cause serious accident.

Platen Fixed

In the Fixed method, the blow bar insert to the groove of rotor through sides and the both ends of blow bar are compacted by platens. But if we adopt this Fixed method, the blow bar cannot be tightly compacted, especially in the working process, the blow bar will easily loose.

To make the blow bar tighten, we need to weld the blow and platens together. But the platens are easily to wear and difficult to change.

Wedge Fixed

In wedge Fixed method, we generally are using the wedges to fix the blow bar on the rotor. In the working process, under centrifugal force, this Fixed method can ensure the high-speed rotating of rotor. Besides, blow bar is tightly fixed on the rotor, with reliable performance and convenient to replace. For now, wedge Fixed method is relatively better to fix the blow bar. Many manufacturers adopt this method to fix blow bar in impact crusher.

Of course, to extend the service life of blow bar, manufacturers not only need to adopt suitable Fixed method, but also adopt high quality material to make blow bar and keep on optimizing the structure.

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