新型数控反击式制砂机 New type numerical control impact sand making machine

新型数控反击式制砂机：
　　反击式制砂机，是针对矿山采石场大量粒度5-15mm的瓜米石需要制砂而研制的制砂机械。该机工作时在电动机的带动下，转子高速旋转，石料进入板锤作用区时，与转子上的板锤撞击破碎后抛至反击衬板上再次撞击破碎，然后又从反击衬板上弹回到板锤作用区重新撞击破碎，此过程重复进行，石料由大到小进入第一、第二、第三破碎腔重复进行破碎，石料经破碎后由出料口排出。调整反击架与转子之间的间隙或调节转子转速，改变出料粒度。
　　该机破碎的成品砂呈似立方体、无张力、无裂缝，符合高速公路、高速铁路、搅拌站等对砂子的高质量要求。
　　新型反击式制砂机，是在反击式制砂机基础上优化技术参数。转子的板锤采用燕尾槽与板锤支座的燕尾键形成卡位配合并加螺栓紧固，确保板锤在运转过程中不脱落，保障整机运转安全；科学设计撞击角度，增大撞击力，使石料在破碎腔内下行过程中重复多次形成石料与板锤、石料与反击衬板、石料与石料之间相互撞击，从而提高石料的破碎率、提高成品产量、降低磨损成本；采用高效板锤，高效板锤采用特别配方的高铬合金材料精密铸造，增强板锤的耐磨性，板锤加宽加厚增加板锤的磨削量，提高板锤的利用率；改进结构，增加侧门和后窗，便于板锤、反击衬板的更换和机腔内的检查维护；配置均衡送料器，使石料在破碎腔内分布均匀，增加石料的撞击面，从而提高破碎率和制砂成品产量。
　　新型数控反击式制砂机，是在新型反击式制砂机基础上配置变频控制器，应用变频技术调节转子转速，自动改变出料粒度，提高制砂成品率和成品产量。已申报国家专利。
New type numerical control impact sand making machine :
　　In view of  requirements for making sands from  large amount of pisolite with a size range of 5- 15 mm at the quarries , an impact sand making machine has  been  developed by our company . When the machine is working, the rotor driven by the electromotor rotates at a high speed, and the  stones enter  the functioning area of   blow bars  and impact the blow bars mounted on the rotor  and are crushed , and  then thrown onto the impact liners to be crushed again by impact,  and rebounded into the functioning area of  blow bars to be crushed  once more by impact. Such a  process will be repeated for stones to enter the 1st, 2nd and 3rd crushing cavity based on the size range from big to small until the crushed stones are  small enough to escape from the bottom discharging port .  It is possible to change the discharge sizes by adjusting the space between the impact rack and the rotor , or by adjusting the rotating speed of the rotor .
　　The crushed sand product produced by the machine is of a similarly cubic shape  , free of tension and free of fissures, meeting the requirement of high quality stipulated by expressway , high-speed  rail and cement mixing station  and so on .
　　On the basis of the impact sand making machine,  our company has optimized the technical parameters for the new type impact sand making machine . As dovetail slots on the blow bars and dovetail keys on the blow bar seats  form clamping  match , blow bars on the rotor   are assembled with key-slot clamping plus bolt fastening , ensuring no falling off of blow bars and ensuring safety of the whole machine during operation .The impact angles are designed scientifically to increase the impact force . Repeated impact between stones and blow bars , between stones and impact  liners ,and rock-on-rock will occur for many times when the stones move down in the crushing cavity, leading to higher crushing rate and higher output of sand product   and lower abrasion cost .  High efficient blow bars  are adopted . High efficient blow bars  are cast precisely with high chromium alloy of special prescription for improving the abrasion resistance . Blow bars are thickened and widened for improving grinding  quantity and  utilization  rate  of  blow bars. The structure of the machine is improved, adding  side doors  and a back window for convenient replacing of blow bars and impact liners , and for convenient checking and maintenance  inside the machine  chamber. An equilibrium feeder is configured,  allowing  stones to distribute uniformly in the crushing cavity and improving the utilization of  impacting space inside the crushing cavity, and hence improving crushing rate  and output of  finished sand products .
　　On the basis of the new type impact sand making machine, a variable frequency controller has been configured for the new type numerical control impact sand making machine . Variable frequency technology is used to adjust  the rotating speed of the rotor and regulate automatically  the discharge sizes of products ,  and improve sand product yield rate and output of finished products.  National patent has been applied for the new type numerical control impact sand making machine .

技术参数Technical  parameters