The utility model discloses an internal and external preventing and closing filter cylinder, the purpose of the utility model is to design an internal and external die preventing filter cylinder for preventing the filter material from being killed. The technical proposal of the utility model is that an inner and an outer preventing and stopping filtering barrel comprises a filter medium, an inner steel net and an outer steel net, and a supporting net matched with the filter material shape is arranged on one side of the filter material. The surface of the steel net is provided with a glue layer. The supporting net is arranged between the inner steel net and the filter medium. The support net is made of plastic material. The utility model has the advantages of reasonable structure, effectively preventing filter material from dying and improving the use efficiency of the equipment.
【技术实现步骤摘要】
【技术保护点】
内外防并死滤筒，它包括滤材，内钢网，外钢网，其特征在于：在滤材一侧设有与滤材形状相配的支撑网。
【技术特征摘要】
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