Highly-compressed air ejector vacuum pump system

The utility model relates to a highly-compressed air ejector vacuum pump system. On the analogue test device of space flight and aviation vacuum, mainly use steam jet vacuum pump system, water ring vacuum pump system and roots vacuum pump system etc. At present, nevertheless all there is the shortcoming in above-mentioned system. The utility model provides a highly-compressed air ejector vacuum pump system, the highly-compressed air ejector vacuum pump who establishes ties and set up including a plurality of groups, highly-compressed air ejector vacuum pump includes nozzle, suction chamber and diffuser pipe, suction chamber department is provided with the extraction opening that link up with the suction chamber, the discharge port has on the diffuser pipe, its characterized in that is connected to the highly-compressed air ejector vacuum pump's of preceding one-level discharge port and the highly-compressed air ejector vacuum pump's of back one-level extraction opening: the compressed air source who still includes pressure >= 5MPA, pressure air source is connected with the highly-compressed air ejector vacuum pump's of each grade nozzle respectively. The utility model discloses simple structure, reasonable in design, it is convenient to maintain, uses safe and reliable, with low costs.