Gas high-temperature pneumatic hall-ball valve leakage prevention combined device of submerged arc furnace discharge system

The invention discloses a gas high-temperature pneumatic hall-ball valve leakage prevention combined device of a submerged arc furnace discharge system, and relates to the technical field of submergedarc furnace production corollary equipment. The gas high-temperature pneumatic hall-ball valve leakage prevention combined device comprises a bin, a high-temperature discharge pneumatic hall-ball valve, a gas and smoke leakage prevention sealing device, a communication pipe, a discharge pipe and a discharge pipe support, wherein the bin communicates with the gas and smoke leakage prevention sealing device through the high-temperature discharge pneumatic hall-ball valve. According to the gas high-temperature pneumatic hall-ball valve leakage prevention combined device, the gas and smoke leakage prevention sealing device is arranged, toxic smoke generated due to smelting in a furnace of the improved submerged arc furnace discharge system does not leak again, production safety of a control region of the entire disch