Gas-solid mixture jet fire device

The gas-solid mixture jet fire device comprises a combustible gas bottle, a pressure reducing valve, a metal hose, an adapter, a stainless steel pipe, a gas flow controller and a flame arrester whichare connected in sequence, and the lower portion of a combustor penetrates through a feeder and then is connected with the flame arrester through a gas conveying metal hose. An igniter is arranged atthe top of the combustor; a supporting device for fixing the feeder is arranged on the electronic balance, and the upper portion of the combustor is sleeved with a sand collecting and weighing device.According to the utility model, the venturi effect is utilized; sand accumulated at a side opening of a combustor is automatically sucked in and sprayed out together with gas, the suction amount of the sand can be controlled through the gaseous fuel flow, the pore size, the area of the side opening of the combustor and the sand accumulation height in a feeder, the sand accumulation height in thefeeder is supplemented and c