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首页> 外文会议>6th International Conference on Bulk Materials Storage, Handling and Transportation, Sep 28-30, 1998, University of Wollongong NSW >The Anti-Segregation and Blending Characteristics of a Mass-Flow Hopper and Rotary Valve
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The Anti-Segregation and Blending Characteristics of a Mass-Flow Hopper and Rotary Valve

机译：质量流料斗和旋转阀的抗偏析和混合特性

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摘要

This paper is concerned with the interfacing of a rotary valve to mass-flow axi-symmetric bins with conical hoppers. A model feeder and hopper system, constructed from perspex, is described, the rotary valve having six vanes and being driven by a variable speed motor. Two hopper half angles are examined in the mass-flow bins, namely 15 deg and 20 deg. The experiments involve the application of an 'impulse' layer of marked particles on the surface of the solids in the bin and determination of the 'volumetric weighting function h(V)' of the bin and rotary valve system for a range of valve speeds. From the shape of the h(V) distribution, the blending performance on the one hand, and anti-segregation characteristics on the other, can be determined. The results identify the range of valve speeds over which non-mixing and anti-segregation occurs, and the range of speeds necessary if mixing and blending are to be effected. Procedures for optimising the design of hoppers and rotary valves to achieve desired flow patterns, and blending or anti-segregation, are outlined.
机译：本文关注的是旋转阀与带有锥形料斗的质量流轴对称料仓的接口。描述了一种由有机玻璃构成的模型进料器和料斗系统，该旋转阀具有六个叶片并且由变速马达驱动。在质量流箱中检查两个料斗半角，即15度和20度。实验包括在料桶中的固体表面上施加“脉冲”标记颗粒层，并确定在一定范围的阀速下料斗和旋转阀系统的“体积加权函数h（V）”。从h（V）分布的形状，一方面可以确定混合性能，另一方面可以确定抗偏析特性。结果确定了发生非混合和抗偏析的阀速度范围，以及要进行混合和共混所需的速度范围。概述了优化料斗和旋转阀设计以实现所需流动模式以及混合或防偏析的程序。

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