CN106110918B - 一种粉体涡流分散装置及方法 - Google Patents
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Abstract
本发明公开了一种粉体涡流分散装置,包括泵座、空气喷嘴、料斗和分散管,所述空气喷嘴和分散管同轴相通设置在泵座的两端,所述空气喷嘴前端设有喷口,所述泵座位于喷口和分散管内腔之间设有吸附腔,所述料斗安装在泵座上端,所述料斗的出口与吸附腔相连通,所述分散管内腔还外扩开设有至少一个涡流环。本发明还公开了一种粉体涡流分散方法。本分散装置结构简单,样品粉在负压牵引下与射流混流进入分散管,分散管内腔开设涡流环,射流穿过分散管时带动涡流环中空气旋转形成涡流,样品粉进入涡流环,在离心力的作用下与涡流环壁摩擦产生第一次分散,在离开涡流环时又与其它样品粉或分散管内壁碰撞产生第二次分散,分散效果非常好。
Description
技术领域
本发明涉及粉体加工技术领域,尤其涉及一种粉体涡流分散装置及方法。
背景技术
在利用激光粒度仪对粉体材料进行测试时,有两种方式,一种是湿法测试,使粉体在液体中充分分散,另一种是干试测试,使粉体在气体中充分分散。对于各类在水溶液中会发生化学、物理性质变化的粉体样品,如水泥等,又必须使用干法测试,也就是说必须使该类样品在气体中分散成单个颗粒,虽然粉体在溶液中易于分散,但要想让其充分分散于空气之中却比较困难,通常分散设备结构复杂,调整困难,特别是对于1μm以下的小颗粒分散效果较差。
发明内容
为了克服上述现有技术的不足,本发明提供了一种分散效果好的粉体涡流分散装置及方法。
本发明解决其技术问题所采用的技术方案为:
本分散装置,包括泵座、空气喷嘴、料斗和分散管,所述空气喷嘴和分散管同轴相通设置在泵座的两端,所述空气喷嘴前端设有喷口,所述泵座位于喷口和分散管内腔之间设有吸附腔,所述料斗安装在泵座上端,所述料斗的出口与吸附腔相连通,所述分散管内腔还外扩开设有至少一个涡流环。
作为上述技术方案的改进,所述分散管内腔由接近吸附腔一端向远离吸附腔一端逐渐扩大。
作为上述技术方案的改进,所述涡流环呈圆环状或螺旋管状,所述涡流环设置有两个。
一种粉体涡流分散方法,该方法包括:
步骤一、压缩空气从空气喷嘴喷出,形成射流;
步骤二、上述射流在喷口外的吸附腔产生负压区,料斗的样品粉和空气在负压牵引下进入负压区,并与射流混流;
步骤三、上述射流穿过分散管时带动涡流环中空气旋转形成涡流,样品粉进入涡流环,在离心力的作用下与涡流环内壁摩擦产生第一次分散;
步骤四、上述样品粉在离开涡流环时与其它样品粉或分散管内壁碰撞产生第二次分散。
本发明的有益效果有:
本分散装置结构简单,样品粉在负压牵引下与射流混流进入分散管,分散管内腔开设涡流环,射流穿过分散管时带动涡流环中空气旋转形成涡流,样品粉进入涡流环,在离心力的作用下与涡流环壁摩擦产生第一次分散,在离开涡流环时又与其它样品粉或分散管内壁碰撞产生第二次分散,分散效果非常好。
附图说明
下面结合附图及具体实施例对本发明作进一步说明,其中:
图1是本发明实施例的剖面示意图;
图2是本发明实施例的射流方向示意图;
图3是本发明实施例中分散管的结构示意图;
图4是图3的剖视图。
具体实施方式
参见图1和图2 ,本发明的一种粉体涡流分散装置,包括泵座1、空气喷嘴2、料斗3和分散管4,所述空气喷嘴2和分散管4同轴相通设置在泵座1的两端,所述空气喷嘴2前端设有喷口21,所述泵座1位于喷口21和分散管4内腔之间设有吸附腔5,所述料斗3安装在泵座1上端,所述料斗3的出口与吸附腔5相连通。
进一步参见图3和图4,所述分散管4内腔还外扩开设有至少一个涡流环41,所述涡流环41呈圆环状或螺旋管状,本实施例中涡流环41呈圆环状,且其横截面呈优弧状,分散管的材料耐磨性要求高,所述分散管4内腔由接近吸附腔5一端向远离吸附腔5一端逐渐扩大。
一种粉体涡流分散方法,所述方法采用上述粉体涡流分散装置对粉体进行涡流分散,该方法包括:
步骤一、压缩空气从空气喷嘴2喷出,形成射流;
步骤二、上述射流在喷口21外的吸附腔5产生负压区,料斗3的样品粉和空气在负压牵引下进入负压区,并与射流混流;
步骤三、上述射流穿过分散管4时带动涡流环41中空气旋转形成涡流,样品粉进入涡流环41,在离心力的作用下与涡流环41内壁摩擦产生第一次分散;
步骤四、上述样品粉在离开涡流环41时与其它样品粉或分散管4内壁碰撞产生第二次分散。
此外,本实施例设有两个涡流环41,可达到分散效果非常好,若采用多级涡流环41可成倍地增加分散效果。由于大颗粒在射流中加速慢,为防止大颗粒在涡流环41内失速出不来,适当加大喷口21到第一级涡流环的距离,可使其充分加速;涡流半径减小,离心力增大,有利于小颗粒分散效果,但同样增加大颗粒减速作用可能失速出不来,因而,可综合各种样品找出平衡点,并通过调整压缩空气的气压或流速来适应不同粉体的分散要求。
另外,本分散装置结构还可以应用在粉体粉碎装置领域中,只需加大射流速度,粉体可在分散管4中粉碎。
以上所述,只是本发明的较佳实施方式而已,但本发明并不限于上述实施例,只要其以任何相同或相似手段达到本发明的技术效果,都应属于本发明的保护范围。
Claims (4)
1.一种粉体涡流分散装置,其特征在于:包括泵座、空气喷嘴、料斗和分散管,所述空气喷嘴和分散管同轴相通设置在泵座的两端,所述空气喷嘴前端设有喷口,所述泵座位于喷口和分散管内腔之间设有吸附腔,所述料斗安装在泵座上端,所述料斗的出口与吸附腔相连通,所述分散管内腔还外扩开设有至少一个涡流环,所述涡流环呈圆环状,样品粉在负压牵引下与射流混流进入分散管,射流穿过分散管时带动涡流环中空气旋转形成涡流,样品粉进入涡流环,在离心力的作用下与涡流环壁摩擦产生第一次分散,在离开涡流环时又与其它样品粉或分散管内壁碰撞产生第二次分散。
2.根据权利要求1所述的一种粉体涡流分散装置,其特征在于:所述分散管内腔由接近吸附腔一端向远离吸附腔一端逐渐扩大。
3.根据权利要求2所述的一种粉体涡流分散装置,其特征在于:所述涡流环设置有两个。
4.一种粉体涡流分散方法,其特征在于:所述方法采用权利要求1-3任一项所述的一种粉体涡流分散装置,该方法包括:
步骤一、压缩空气从空气喷嘴喷出,形成射流;
步骤二、上述射流在喷口外的吸附腔产生负压区,料斗的样品粉和空气在负压牵引下进入负压区,并与射流混流;
步骤三、上述射流穿过分散管时带动涡流环中空气旋转形成涡流,样品粉进入涡流环,在离心力的作用下与涡流环内壁摩擦产生第一次分散;
步骤四、上述样品粉在离开涡流环时与其它样品粉或分散管内壁碰撞产生第二次分散。
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CN206027482U (zh) * | 2016-08-29 | 2017-03-22 | 珠海欧美克仪器有限公司 | 一种粉体涡流分散装置 |
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RU2224585C2 (ru) * | 1997-12-20 | 2004-02-27 | Ю-ЭС-БИ-АЙ Ко. | Вихревой смеситель |
WO2002016227A1 (de) * | 2000-08-25 | 2002-02-28 | Wella Aktiengesellschaft | Vorrichtung mit einer mischkammer |
CN201027713Y (zh) * | 2007-02-09 | 2008-02-27 | 任中京 | 粉料分散泵 |
CN202762333U (zh) * | 2012-08-06 | 2013-03-06 | 徐州中宇石油化工科技有限公司 | 文丘里旋流动态混合器 |
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