Gas pipeline automatic switching gas conveying valve

The invention discloses a gas pipeline automatic switching gas conveying valve which comprises a valve body internally provided with a gas conveying channel, gas input ports which are formed in the top and the bottom of the valve body respectively and can be communicated with the gas conveying channel, and a gas output port formed in one end of the valve body. The valve core is provided with an air hole, one end of the valve core is provided with a first elastic piece, each gas input port is internally connected with an adjusting nut, the center of each adjusting nut is provided with an air inlet hole in a penetrating manner, and a first sealing gasket is arranged between the valve core and each adjusting nut. A plurality of control valves and control loops are not needed, electric power and electrical automation control are not needed, and the air pipeline automatic switching air delivery valve with adjustable switching pressure is achieved. 本发明公开一种气体管路自动切换输气阀，包括有内部设有输气道的阀体，分别设置在该阀体的顶部和底部、并能与输气道连通的气体输入口，以及设置