选矿厂中脱水工序的多台真空泵,为了节省管路並便于交替开車和检修,一般都采用如图1所示的配置。在这种情况下,真空泵的吸气管上都需安設閥門,以防止停車机組进气,降低真空管路中的真空度。过去这些閥門都是人工操作,占了一些劳动力。 Multiple vacuum pumps in the dehydration process at a concentrator are generally configured as shown in Figure 1 in order to save piping and facilitate alternate driveings and overhauls. In this case, the vacuum pump suction pipe must be installed on the valve to prevent parking unit intake, reduce the vacuum in the vacuum line. In the past these valves were manually operated, accounting for some labor.