First, the working principle of the crusher The annular space composed of two cylinders, the impeller rotates at high speed in the vortex breaking chamber, and the material can also reside in the vortex breaking chamber to form a material lining. The crushing process of the material occurs in the vortex breaking chamber, and the material lining The layer separates the walls of the crushing action vortex crushing chamber, so that the crushing effect is limited to between the materials, and plays the role of wear-resistant self-lining. The observation hole is to observe the wear condition of the wear block at the launching port of the impeller flow channel and the wear condition of the lining plate at the top of the vortex breaking cavity. The working hole must be sealed tightly when the crusher is working. The distributor is fixed to the upper cylindrical section of the vortex breaking chamber. The impeller rotates at a high speed to generate airflow, and an internal self-circulation system is formed in the vortex crushing chamber through the distributor and the impeller. Second, the type of crusher Impact crusher, commonly known as sand making machine, is a high-energy low with international advanced level developed by using the principle and technology of the famous "stone-rock" crusher of American Barmac Company, combined with the actual situation of sand production at home and abroad. Consumption equipment, its performance plays an irreplaceable role in a variety of ore fine broken equipment, is currently the most effective, practical and reliable gravel machine. Impact crusher, commonly known as sand making machine, is a high-energy low with international advanced level developed by using the principle and technology of the famous "stone-rock" crusher of American Barmac Company, combined with the actual situation of sand production at home and abroad. Consumable equipment. Third, the application of the crusher The crusher is widely used in many sectors such as mining, smelting, building materials, roads, railways, water conservancy and chemical industries. At present, the commonly used crushing machinery includes a jaw crusher, a counter crusher, a wind-selective crusher, a hammer crusher, an impact crusher, a roller crusher, and a composite crusher. The jaw crusher ( jaw crusher) has the characteristics of large crushing ratio, uniform product size, simple structure, reliable operation, simple maintenance and economical operation. PF-I series impact crusher can process materials with side lengths of 100-500 mm, and its compressive strength can reach up to 350 MPa. It has the advantages of large crushing ratio and cubic particles after crushing. PF-II series impact crushing Machine, suitable for crushing medium and hard materials, such as limestone crushing in cement plant, with the advantages of large production capacity and small discharge size.