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$(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> 一、氮气循环粉碎分级系统概况： <div>氮气保护粉碎或分级主要针对易燃易爆或气敏性物料进行粉碎或分级。采用氮气循环，并以自动化控制氧气含量，进行自动氮气补进技术，使整个系统维持一定的含氧量，含氧量可控制�?0PPM以下，并衡定压力和温度，使物料不但达到了粒度要求，同时也保证安全防爆和隔氧衡温等要求。氮气保护设备主要分为粉碎和分级，粉碎分为机械粉碎和气流粉碎，分级为气流分级、�/div> <div>二、氮气循环气流粉碎机的工作原理：</div> <div>该设备的工作原理是将压缩气体通过拉瓦尔喷嘴加速成高速气流射入粉碎室，粉碎室中的物料被高速气流加速，颗粒之间猛烈碰撞，从而实现物料的超细粉碎。被粉碎的物料随气流运动到分级区，由分级轮分选出粒度合格的物料。粒度不合格的物料，再返回粉碎区继续粉碎到所需要的粒度，再由分级轮分选出去。携带物料的气流进入旋风分离器进行收集，在物料旋转产生的离心力的作用下，物料沿着旋风筒壁下滑，然后经排料口排出，小部分物料随气流进入除尘器，被除尘器收集，经过净化后的氮气再次进入空压机，形成闭路循环、�/div> <div>三、氮气循环气流分级机工作原理９�/div> <div>系统在真空后输入氮气，使系统达到一定的压力后，经风机把物料输送到分级腔内；在高速旋转的分级转子产生强大离心力，把粗颗粒挡住，粗颗粒无法通过分级轮，同时风机引力部分地克服了离心力而把细粉吸走，细粉穿过分级轮叶片间隙，进入旋风收集器或者直接进入除尘器，从而到达了粗细物料分离的目的。粗颗粒夹带部分细颗粒撞壁后失去速度，沿筒壁下降至二次风口处，经二次风的强烈淘洗分散作用，使粗细颗粒进一步分离，细颗粒上升至分级区二次分级，粗颗粒下降至卸料口处排出，涡轮式气流分级机可与多级气流分级机串联，并于旋风分离器、除尘器、引风机以及氮气源组成一套氮气分级系统、�/div> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; font-size: 14px; 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