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Plural odd number bell-like openings nozzle device for a fluidized bed jet mill
Plural odd number bell-like openings nozzle device for a fluidized bed jet mill
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机译:用于流化床气流磨的多个奇数钟形开口喷嘴装置
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摘要
A jet mill includes plural nozzle devices for discharging a composite stream of high velocity fluid. Each nozzle device includes a plural odd number of nozzle openings for discharging an individual stream of high velocity fluid. Each nozzle opening comprises (i) a converging region for converging and accelerating a volume of high pressure fluid; (ii) a throat region defining a narrowest diameter region of the nozzle opening; (iii) a first expansion region for producing a linear expansion of the volume of high pressure fluid, and (iv) a second expansion region for producing a turning expansion as well as a parallel flow of the volume of high pressure fluid. The first expansion region has a radius “r1” and a length “s1” with radius r1 and length s1 determined such that (dr1/ds1) is a constant. The second expansion region has a radius “r2” and a length “s2” with radius r2 and length s2 determined such that (dr2/ds2) is non-linear and a function of s2. 展开▼
机译:喷射磨机包括用于排出高速流体的复合流的多个喷嘴装置。每个喷嘴装置包括多个奇数个喷嘴开口,用于排出单独的高速流体流。每个喷嘴开口包括:(i)用于收敛和加速一定体积的高压流体的收敛区域; (ii)限定喷嘴孔的最窄直径区域的喉部区域; (iii)用于产生高压流体体积的线性膨胀的第一膨胀区域,和(iv)用于产生转向膨胀以及高压流体体积的平行流动的第二膨胀区域。第一扩展区域的半径为“ r 1 B>”,长度为“ s 1 B>”,半径为r 1 B>,长度为s 1 B>确定为(dr 1 B> / ds 1 B>)是常数。第二扩展区域的半径为“ r 2 B>”,长度为“ s 2 B>”,半径为r 2 B>,长度为s 2 B>确定为(dr 2 B> / ds 2 B>)是非线性的并且是s 2的函数。 B>
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