Double quick-cutting device for branch pipe of gas burner of hot-blast stove

The utility model provides a hot-blast stove gas burner branch pipe double fast cutting device which comprises a hot-blast stove body, a connecting pipe is arranged on one side of the hot-blast stove body, a positioning ring is fixedly arranged on the outer circle wall face of the connecting pipe in a sleeved mode, a fixing ring is arranged on one side of the positioning ring, and a branch pipe body is fixedly arranged on the inner circle wall face of the fixing ring in a sleeved mode. The quick switching assembly is arranged on one side of the hot blast stove body and used for quickly switching gas in the branch pipe body, a positioning ring is arranged, and the positioning ring can be matched with a fixing ring to connect the connecting pipe with the branch pipe body, so that gas can circulate in the connecting pipe and the branch pipe body; and the pneumatic quick switching valve can be triggered with the pneumatic three-eccentric zero-leakage butterfly valve to immediately act to cut off gas during abnorm