Large-capacity inert gas shielded fritting furnace

The utility model relates to a large-capacity inert gas protection sintering furnace. A sintering furnace chamber is positioned at the outer cover of the furnace body; an electric heating member is positioned at the furnace chamber, and the furnace chamber is connected with a vacuum extractor and an inert gas input device, the outer cover of the furnace body is in the shape of cuboid; the furnace chamber is connected with an inert gas circulation device, the inert gas circulating air inlet in the furnace chamber is connected with a ventilation terminal; an air outlet is connected with a gas collecting tube; the inert gas circulation device is provided with a power blower and a cooling heat exchanger. The utility model has the advantages of reasonable and compact structure, simple operation and control, large capacity, low cost, large output and low energy consumption of per unit product; and the utility model can ensure a higher sintering quality and pass rate and a short sintering cycle for the products, and can improve the equipment capacity factor of the sintering furnace, thereby the utility model is easy to be applicable for industrial production.