粉体包装机密实输送螺杆的设计

Design of Densifying Screw Feeder Applied in Powder Packaging Machine

针对粉体包装夹气、包装容器利用率低、难堆垛及运输不便等问题,提出了一种用来密实粉体的变螺距螺杆设计方案。根据粉体包装生产中粉体沿螺旋轴作复合空间运动的规律,为实现输送过程中粉体的密实,借鉴普通螺旋式输送器的设计原则和变螺距螺杆的设计方法,设计了具有变螺距密实功能段的螺杆,对螺距变化的输送螺杆的各设计参数进行计算与校核,并通过三维实体软件对螺杆进行实体建模。该设计方案满足了粉体密实输送包装要求,解决了粉体夹气问题,从而提高系统的包装效率。

Aiming to solve the problems of gas enclosure, low utilization rate, difficult stacking and inconvenient transportation of powder packing, a kind of new powder densifying packing machine was proposed. The process and working principle of densifying screw feeder were analyzed in detail. Based on the design principle of the traditional screw and the actual packaging requirements such as densifying ratio, design parameters of the screw were calculated and checked. Finally, the three-dimension model of variable pitch screw was finished by 3D solid software. The design can meet the packaging requirements and densify dense conveying packaging , and solve the problem powder effectively. The design can meet the requirements of powder of gas enclosure, so as to improve the packaging efficiency of system.