Large-capacity vacuum cleaning machine

The utility model relates to the technical field of vacuum cleaning machines, in particular to a high-capacity vacuum cleaning machine which comprises a working chamber, a water tank and a forced air drying pipeline, the water tank is arranged at the top of the working chamber, the forced air drying pipeline comprises an inner circulation pipeline and an outer circulation pipeline, and the inner circulation pipeline is arranged at the top of a cavity of the working chamber. The outer circulation pipeline is arranged outside the cavity of the working chamber and communicated with the working chamber, and an air amplifier is arranged on the outer circulation pipeline. The capacity of the working chamber of the cleaning machine is increased by 90%; the time for cleaning once is reduced from 70 minutes to 55 minutes, so that the efficiency is improved, and the total working time is reduced; the whole parts of the cleaning machine are reduced, the production cost is reduced, meanwhile, the failure rate is reduced,