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近年来,国内外许多厂家生产的刮板输送机上都采用了封底溜槽,特别是在一些重型刮板输送机上,各种结构的封底溜槽得到了广泛的应用。封底溜槽除具有刚变大,稳定性好,适于与重型支架配套等特点外,更重要的是在封底溜槽中,回链槽变成了封闭式结构,刮板链可以不带回煤,减少了回链阻塞和摩磨阻力,输送机的功率消耗大为降低。据有关资料介绍,采用封底溜槽,输送机空载功率消耗可以下降30％～50％,这对于大功率刮板输送机是相当可观的,同时,采用封底溜槽的输送机事故率及刮板链的磨损明显降低。但是,由于封底溜槽的封闭结构,回煤一旦形成便无处可去,当细煤较
In recent years, many domestic and foreign manufacturers scraper conveyor are used on the back chute, especially in some heavy scraper conveyor, back chute of various structures has been widely used. In addition to the back chute has just become larger, good stability, suitable for heavy duty support and other features, but more importantly in the back chute, back to the groove into a closed structure, scraper chain can not bring back the coal, Reduce the chain blockage and friction resistance, the conveyor power consumption is greatly reduced. According to the relevant information, the use of back chute, conveyor no-load power consumption can be reduced by 30% to 50%, which is considerable for high-power scraper conveyor, while the back chute conveyor accident rate and scraper chain The wear is significantly reduced. However, due to the closed structure of the back chute, once the coal is formed, there is nowhere to go. When the coal is relatively fine