【摘要】 针对煤矿液压支架液压系统乳化液污染问题,开发一种可在支架液压系统待机状态下实现滤芯反向清洗的高压自动反冲洗过滤站,应用污染控制平衡理论并引入分流系数和反冲洗效率,建立了反向冲洗的污染控制模型,仿真分析了各参数对反冲洗时间的影响,并用试验进行了验证。结果表明:当滤芯前后压差因污染沉积达到设定压力开启反向清洗后,在较短时间内即可降低压差,实现滤芯反向清洗;其反冲洗时间随反冲洗效率增加而缩短,通过加装超声装置可提升反冲洗效率;同时反冲洗时间随分流系数增大而缩短,但会增加乳化液用量,需对分流系数和反冲洗时间进行合理设计,以平衡性能与经济。更多还原

【Abstract】 A high pressure automatic back flushing filter station is developed for the problem of emulsion contamination in hydraulic support system in ore, which can realize the back flushing of filter core in standby state of hydraulic support system, the pollution control model of back flushing is constructed by introducing diversion coefficient and back flushing efficiency according to the pollution control equilibrium theory. The influence of each parameter on back flushing time is simulated and analyzed, and verified by the experiments. The results show that when the pressure difference before and after in the filter core reaches the set pressure, the pressure difference can be reduced in a relatively short time to achieve the reverse cleaning of the filter core, the back flushing time decreases with the increase of the back flushing efficiency, and the back flushing efficiency can be improved by installing an ultrasonic device, at the same time, the back flushing time decreases with the increasing of the diversion coefficient, but the emulsion will be increased. The diversion coefficient and back flushing time should be reasonably designed to balance performance and economy.更多还原