Multiple ingot vacuum running castings device and method for vacuum running castings using same

The invention relates to a multi-ingot vacuum casting device and a method for implementing vacuum casting by using the device. The multi-ingot vacuum casting device comprises a pedestal, steel ingot molds, a vacuum tank, a vacuum cover, a vacuum cover vehicle, a tundish, a slide gate nozzle mechanism, a guide sleeve, a separation pipe, a lifting mechanism, a viewing window, a pump-out pipe, a vacuum pump system, a main vacuum valve, and a vacuum break valve, wherein the pedestal is arranged in the vacuum tank; the steel ingot molds are arranged on the pedestal; a vacuum cover is connected with a lifting mechanism arranged on the vacuum cover vehicle; the slide gate nozzle mechanism is arranged on the tundish; the guide sleeve and the viewing window are arranged on the vacuum cover; the slide gate nozzle mechanism, the guide sleeve and the steel ingot molds are communicated with each other; the main vacuum valve and the vacuum valve are arranged on the pump-out pipe; and the pump-out pipe is connected with the