| 摘要 |
The disclosure is directed to modular irradiators for irradiating bulk and/or palletized materials characterized by each bulk material irradiator including a self-contained conveyor unit including a tube through which bulk material is fed vertically downwardly into an interior chamber, a spiral screw which during rotation thereof conveys the bulk material upwardly through the interior chamber, and gamma ray source elements which emit gamma rays to irradiate the bulk material during its downward and upward movement through the interior chamber. A conveying system is also positioned outwardly of the gamma ray source elements for effecting spiral and reciprocal/rotary movement of palletized and/or packaged material relative to the gamma ray source elements. The modular irradiators and gamma ray source elements are supported upon a base and the base, modular irradiators and gamma ray source elements include interdigitated projections and openings which function to accurately locate the source elements relative to the modular irradiators, change the distance therebetween to vary dosage requirements, and adapt the irradiators for alternative or joint use of Cobalt-60 in racks and/or Cesium-137 in tubes.
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