Guide cylinder for improving crystal quality

The utility model relates to the field of solar cell generation, in particular to the field of monocrystalline silicon generation. A guide cylinder for improving crystal quality comprises a ceramic inner guide 2, a graphite outer guide 1, a viscose-based soft felt filling layer 3 and a porous filtering graphite ring disc 4, the viscose-based soft felt filling layer 3 is adhered to the inner side of the graphite outer guide 1, and the ceramic inner guide 2 is detachably mounted on the inner sides of the graphite outer guide 1 and the viscose-based soft felt filling layer 3. And the porous filtering graphite ring disc 4 is detachably mounted on the inner side of the lower port of the graphite outer guide 1. The ceramic inner conductor and the graphite outer conductor are detachable structures and can be replaced conveniently. 本实用新型涉及太阳能电池生成领域，特别涉及单晶硅生成领域。一种用于改善晶体品质的导流筒，包括陶瓷内导2、石墨外导1、粘胶基软毡填充层3、多孔过滤石墨环盘4，所述粘胶基软毡填充层3粘接在所述石墨外导1内侧，所述陶瓷内导2可拆卸安装在所述石墨外导1和粘胶基软毡填充层3内侧，所述多孔过滤石墨环盘4可拆卸安装在所述石墨外导1下端口内侧。本实用新型陶瓷内导和石墨外导是可拆卸结构，能够