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为BM系列提升绞车配套的型中压齿轮油泵承担润滑和制动的任务,而该型油泵原结构(见图1)采用毛毡密封。毛毡密封层经过一段运行后失去弹性和吸附作用,不能紧贴主轴以填补轴、孔形状误差造成的缝隙,也不能刮削主轴传递过来的油膜,它只能靠轴、孔间的缝隙对油液的流动产生摩擦阻力,阻止油液外流,但这种阻力对一般粘度的油液起密封作用不够,往往从渗油到大量漏油,给维护增加了工作量,既浪费油脂,又影响工业卫生。我们对我矿彭家冲井2БМ(3000/1511)型绞车的四台型齿轮油泵做了细致观察和分析,其漏油是从主动轮端面—→滚针轴承—→主轴—→毛毡密封圈内孔—→泵体外侧面。为
For the BM series of winch supporting medium pressure gear pump to undertake the task of lubrication and braking, and the type of pump original structure (see Figure 1) with felt sealed. Felt sealing layer after a period of loss of elasticity and absorption of the role of operation, not close to the spindle to fill the shaft, the hole shape error caused by the gap, it can not shave the spindle transmission of oil film, it can only rely on the shaft, the gap between the hole on the oil Of the flow friction to prevent the outflow of oil, but the resistance of the general viscosity of the oil from the sealing effect is not enough, often from the oil leakage to a large number of oil spills, to increase maintenance workload, both waste oil, but also affect industrial hygiene . We made a detailed observation and analysis on the four gear pumps of our 2PW (3000/1511) winch in Pengjiachui Well Mine. The oil leakage is from the end of the driving wheel → the needle bearing → the spindle → the inner hole of felt ring - → Pump body side. for