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1. 发明授权

US5767421A Belt conveyor cross-stream sampling system 失效
标题翻译：皮带输送机交叉流采样系统
公开(公告)号：US5767421A
公开(公告)日：1998-06-16
申请号：US475068
申请日：1995-06-07
申请人： Armistead M. Long , John B. Long
发明人： Armistead M. Long , John B. Long
IPC分类号： G01N1/20 , G01N1/12
CPC分类号： G01N1/20 , G01N2001/2028 , G01N2001/2092
摘要： A method and apparatus is provided for cross-stream sampling of bulk material distributed as a mounded continuum in a trough formed along the length of a belt conveyor. A rotating cutter passes transversely through the traveling, bulk material continuum to extract substantially all material on said belt in a swath between transverse, parallel cutting planes. Proximate of the sample cutting swath, before and after such swath relative to the material traveling direction, rigid skirting is provided to overlay both lateral edges of the belt. Garlands of resiliently mounted belt supporting idlers span under the belt laterally of the swath to urge the belt into a substantially continuous line of sealed contact with the skirting. Simultaneously, the trough bight of the belt between the skirting is urged into the swath volume to require displacement from the swath volume by passage of the sample cutter thereby insuring full belt surface contact by the cutter and maximum small particle retrieval.
摘要翻译：提供了一种方法和装置，用于沿着带式输送机的长度形成的槽中的堆积连续体分布的散装材料的交叉流采样。旋转切割器横向穿过行进的散装材料连续体，以在横向平行切割平面之间的条带中基本上提取所述带上的所有材料。在样品切割条带之前，相对于材料行进方向在这种条纹之前和之后，提供刚性裙边以覆盖带的两个侧边缘。弹性安装带支撑惰轮的花环横跨带的横向，以将带推入与裙边密封接触的基本上连续的线。同时，踢脚线之间的带的槽形弯曲被推入条带体积中，以便通过样品切割器通过条带体积的位移，从而确保刀具的整个带表面接触和最大的小颗粒回收。

2. 发明授权

US06520035B2 Control system for belt sample cutters 有权
公开(公告)号：US06520035B2
公开(公告)日：2003-02-18
申请号：US09935309
申请日：2001-08-22
申请人： John B. Long , Armistead M. Long
发明人： John B. Long , Armistead M. Long
IPC分类号： G01N112
CPC分类号： G01N1/20 , G01N2001/2028 , G01N2001/2092
摘要： An apparatus is provided for extracting cross-sectional samples of bulk material from a moving belt conveyor with a rotating sample cutter. The sample cutter is driven around a circular sampling path by a pair of double-acting pneumatic cylinders that are connected to angularly offset crank throws. Fluid flow in and out of each pneumatic cylinder pressure chamber is independently regulated as a function of the respective cylinder rod position and direction of movement whereby both chambers may be simultaneously open to the pressure supply or to the atmospheric vent for a brief rotational arc.

3. 发明授权

US5505096A Particulate material sampling apparatus 失效
标题翻译：颗粒材料取样装置
公开(公告)号：US5505096A
公开(公告)日：1996-04-09
申请号：US314139
申请日：1994-09-28
申请人： Armistead M. Long , John B. Long
发明人： Armistead M. Long , John B. Long
IPC分类号： G01N1/10 , G01N1/18 , G01N1/20 , G01N1/00
CPC分类号： G01N1/20 , G01N2001/1006 , G01N2001/1093 , G01N2001/185 , G01N2001/2028 , G01N2001/2092
摘要： A spin riffle sampling apparatus distributes a sample source quantity of particulate material in a predetermined number of increments, 60 for example, to each of a smaller number, 4 for example, of radially disposed bins on a rotating platform. The bins include top openings which pass through a falling zone of material to receive material into the bins. The width dimension of each opening decreases with increasing radial displacement from the axis of rotation of the platform. The bins also may be forwardly pitched relative to the direction of rotation of the platform so as to induce a down draft to control dusting.
摘要翻译：旋流抽样装置以例如数量多的增量将样品源的颗粒材料分配到例如数量较少的4个，例如在旋转平台上的径向设置的箱体。箱子包括通过材料落下区域的顶部开口，以将材料接收到料仓中。每个开口的宽度尺寸随着从平台的旋转轴线的径向位移的增加而减小。所述箱还可以相对于所述平台的旋转方向向前倾斜，以便引起下牵伸以控制除尘。

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