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热水泵所使用的填料,通常为油浸石棉盘根,填料处泄漏状况比较严重。改用机械密封,虽能有效地解决泄漏问题,但成本较高。为此,我们根据我厂在蒸汽阀门填料上使用柔性石墨的成功经验,决定采用柔性石墨与石棉盘根的组合结构。即填料腔最里边和最外边分别装上两圈油浸石棉盘根,石棉盘根之间夹装柔性石墨填料圈,要求柔性石墨填料圈的内孔与泵轴之间的间隙在0.1mm左右。
The filler used in hot water pumps, usually asbestos packing oil, packing at the leak situation is more serious. Switch to mechanical seal, although it can effectively solve the problem of leakage, but the cost is higher. To this end, based on the successful experience of our factory in using flexible graphite on the packing of steam valves, we decided to adopt the combination of flexible graphite and asbestos packing. That is, the innermost and outermost of the packing chamber are respectively filled with two rings of asbestos packing, the flexible graphite packing ring is arranged between the packing of the asbestos packing, the gap between the inner hole of the flexible graphite packing ring and the pump shaft is about 0.1mm .