mumbaicrusher 
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Members
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2018
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In the past, small and medium-sized sand and gravel yards often used fine crushing jaw crushers as secondary crushing equipment. At present, large and medium-sized sand and gravel yards are mainly cone crushers. In some special occasions, for example, when the granular cubic of mineral products is required to be very strict (that is, needle-like particles are relatively small), impact crushers are often used as secondary or tertiary crushing equipment, such as roads constructed by high-level companies in China. Stoneyards generally use this type of equipment. As the reinforced concrete regeneration of urban construction waste is very popular in foreign countries, it is very common to use Impact Crusher as the main equipment.
The impact crusher uses the diameter and effective length of the rotor as the standard division standard. The gap between typical products at home and abroad is mainly in product design and wear-resistant materials.
(I) Product Design
The quality of the mainframes of the domestic and foreign products of the impact crusher of the same specification is similar. However, the quality of the casing of domestic products is small and the quality of the impact frame of the rotor is large.
Because the mass of the rotor is small, the moment of inertia is small, and the motor power of the drag is also small, especially in the case of crushing hard rocks, the processing capacity is low when it is desired to obtain small particles.
In addition, in terms of counter-cavity design, adjustment of counter-attack boards with different granularity requirements, and replacement of hammers, the design differences between domestic and foreign products are also very obvious. Bad design in these areas not only affects product quality, but also brings a lot of inconvenience to use and maintenance.
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