Oxygen-burning valve

The invention discloses an oxygen-burning valve. The valve comprises a valve body and a valve element arranged in the valve body. A gas inlet pipe of the valve body is connected with an oxygen source.A nut sleeve is connected with a gas outlet pipe of the valve body. The gas outlet pipe and the nut sleeve of the valve body are matched for restraining and connecting an oxygen-burning pipe to the gas outlet pipe of the valve body in a sealed mode. According to the technical scheme, through cooperation of the gas outlet pipe and the nut sleeve of the valve body, the oxygen-burning pipe is restrained and connected to the gas outlet pipe of the valve body in the sealed mode, and thus the firmness and sealing property of a joint can be ensured; and the oxygen-burning pipe can be taken out and inserted in conveniently by releasing cooperation of the gas outlet pipe and the nut sleeve. The structure is simple, the operation is convenient, and the safety of the oxygen burning operation is effectively improved. 本发明公开了种