Abstract: Sand able to start at the main or a comprehensive ban on Chinese popular river sand dug from China. In 2005, the state issued a series of regulations third generation of Sand, river sand ban on large-scale excavation behavior, for a time, resulting in a sand source of tension, in addition, sand than natural sand has a larger surface area, higher with sand preparation of concrete strength. Secondly, sand production can be combined with new Sand and gravel production process, greatly reduce production costs in the sand. Finally, the sand is conducive to the comprehensive utilization of mineral resources, not only to solve environmental problems and improve the utilization of natural resources. Efficient crushing machine plays an irreplaceable role as the sand core production line of broken equipment. Faced with these phenomena and problems, sand production will have a significant market opportunity, manufacturing high-quality sand and gravel in order to become a gold industry. Waterfall falling into the material feed size is larger than when the second impeller feed size, they need to feed from two feed ports respectively. Ore hopper into the river gravel crusher, respectively, through the sub-feeder feeding tube into the center of the impeller, when the materials into high-speed rotation of the impeller, the impeller being rapidly accelerated up to several times its acceleration as well as the number of times the acceleration of gravity, and then at a rate per 70-100m / s from the impeller projectile out, first with the free-fall into the whirl crushing cavity material impact outside the impeller and broken, and with the impact of eddy crushing cavity material bed layer, is sprint onto the bed material rebound oblique top whirl crushing chamber, but also to change its direction of motion, deflected downward movement, rotation Road materials emitted from the leaves to form a continuous material curtain, so a piece of material in the turbine crushing chamber by two or even several times the impact crushing effect. Throughout the crushing process, the material is self-reciprocal impact crusher, not in direct contact with the metal element. Since the channel from the impeller material emitted obliquely peripheral impact, forming materials in eddy crushing cavity rotational movement on the bed material, an eddy moving the grinding action between the material, due to the impact of friction between the pulverized material, crushed material discharged from the discharge port. Henan Senda Heavy Sand river gravel production with high performance stability, reasonable structure, high degree of automation Sand, the entire production line in addition to equipment and routine maintenance of the boot down, the process is simple, almost no manual operation and other advantages, it is important to its high efficiency, low running costs Impact crusher, large output, high-yield, finished stones uniform size, grain shape is good, in line with the national high-speed material requirements. Sand should be installed to withstand four times the weight of the machine on the basis of concrete or steel, but also according to Sand different venues where the plant is in operation or in the open-air operations, the installation should adjust the horizontal axis Sand vertical. When installing Sand, top of the machine should be lifting equipment, should also consider whether the overall weight of the machine capable of lifting equipment, space should be left at the top of Sand lifting required space should be left at the side of the overhaul. Before installing the machine to view the packing list, the number of parts to see the match is complete, whether detrimental during transport. River gravel crusher, sand making machine Dongtai, Yuxin Senda provided by Henan new Senda Heavy Machinery Co., Ltd.. Henan new Senda Heavy Machinery Co., Ltd. (www.hnsdzg.com) strong, credible, in Zhengzhou crushing grinding equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Yuxin Senda and you hand into the brilliant, for a better future!