AUTOMATIC EXHAUST VALVE WITH PRY-OFF VALVE

摘要

Disclosed is an automatic exhaust valve with a pry-off valve, comprising a housing (9), a floating ball (10), a connection rod (8), a valve base (1) and a valve plug (2) in the valve base, wherein the valve base is fixed on the housing, a rear end of the valve plug is provided with a spring (3) applying a closing force of a valve port to the valve plug, a rear end of the connection rod is connected to the floating ball, a short rod (4) is fixed at a rear end of the valve plug, a support (6) is fixed at the rear end of the valve base, the front part of the connection rod is hinged on the support, and a front end head (5) of the connection rod is located below the short rod of the rear end of the valve plug. The connection rod is positioned by a hinge shaft (7) on the support, and when the floating ball moves downwards, the front end head of the connection rod applies an upward prying force to the short rod of the valve plug so that the valve plug overcomes a pressure of the spring and is pried off from the valve port. The connection rod is positioned, the connection rod will not bring about movement in a left-right direction, an excessive upward motion of the floating ball is also limited by the front end head of the connection rod so as to prevent the generation of a false motion of the connection rod in the other directions.