Gas mixer for general small verticle shaft outputting gas combustion engine

The utility model relates to a gas mixer for a small general-purpose vertical shaft output gas combustion engine. The utility model is characterized in that the utility model is composed of a gas work control valve, a mix gas forming device of air and gas, a device for easily starting an engine and automatically cutting off a gas path after the engine stops working, a gas pressure reducing and stabilizing device and an automatic gas supply adjusting rod, wherein the gas work control valve is connected with the gas pressure reducing and stabilizing device; the gas pressure reducing and stabilizing device is arranged between the device for easily starting an engine and automatically cutting off a gas path after the engine stops working and the mix gas forming device of air and gas; the upper part of the mix gas forming device of air and gas is connected with the automatic gas supply adjusting rod; the lower part of the mix gas forming device of air and gas air is communicated with a gas sealing path of the top end of a gas sealing film rod of the device for easily starting an engine and automatically cutting off a gas path after the engine stops working. The utility model has the advantages that the gas leakage does not happen, the air and the gas are mixed in an ideal proportioning mode under the condition that the engine is in different working states, and the rotary speed fluctuation of the engine is small.