Impact type system sand machine, also called impact crusher, it is widely used in all kinds of rocks, abrasive, fire-proof material, cement clinker, comprised, iron ore, concrete aggregate in a variety of hard and brittle materials such as broken and finely (sand). In highway building sand, and gravel optimal as appropriate. Impact crusher has simple structure, low cost, stable running, high efficiency and energy saving, impeller and vortex crushing cavity since the lining materials significantly reduced the amount of wear parts cost and maintenance work, impact crusher can effectively solve the raw materials such as glass broken "iron pollution" problem and steel slag in the process of "steel" problem in the process of crushing, clever internal air circulation eliminating dust dispersion.