Apparatus for preparing samples from a flow of bulk material
    1.
    发明授权
    Apparatus for preparing samples from a flow of bulk material 失效
    用于从散装材料流中制备样品的装置

    公开(公告)号:US4930359A

    公开(公告)日:1990-06-05

    申请号:US317319

    申请日:1989-03-01

    摘要: An apparatus for preparing samples taken from a flow of bulk material for the purposes of determining representative chemical and/or physical characteristics of the sampled material. The sampled material is removed in the form of a mix of fine and coarser particles of dust from the flow of bulk material by way of a suction conduit. The sample-preparing apparatus is positioned at a spacing from the intake opening of the suction conduit and at a spacing from the flow of bulk material, and comprises a first housing accommodating a first hollow strainer and a second housing downstream of the first housing and accommodating a second hollow strainer. Outside the second strainer, the second housing is communicated with a reduced pressure source for producing the suction effect to transport the dust particles of the sampled material through the two housings and, insofar as the grain size of the dust particles permits, also through the two strainers. The first strainer defines the upper separation cut-off limit of the relevant grain fraction required for analysis, and the second strainer defines the lower separation cut-off limit of the relevant grain fraction.

    摘要翻译: 为了确定取样材料的代表性化学和/或物理特性的目的,制备从散装材料流中取样的装置。 取样材料通过抽吸管道从散装材料流中以微细和较粗的灰尘颗粒的混合物的形式除去。 样品制备装置定位在与吸入管道的进气口的间隔处并且与散装材料流的间隔处,并且包括容纳第一中空过滤器的第一壳体和位于第一壳体下游的第二壳体, 第二个中空过滤器。 在第二过滤器外部,第二壳体与减压源连通,用于产生吸入效应,以将采样材料的灰尘颗粒传送通过两个壳体,并且只要粉尘颗粒的粒度允许,也可以通过两个 过滤器 第一个过滤器定义了分析所需的相关晶粒分数的上限分离界限,第二个过滤器定义了相关晶粒分数的较低的分离截止极限。