The invention discloses a dual-valve safety device capable of being repeatedly used. The device comprises a valve body, an air inlet end safety trigger plugging mechanism and an air outlet end safety trigger plugging mechanism are arranged in an inner cavity of the valve body, the valve body comprises a shell and end covers connected to the two ends of the shell, each end cover is provided with an air
pipe connecting head and an air flow channel, a center ring shaft is arranged in an inner cavity of the shell, the center ring shaft is connected with the inner wall of the shell through fan-shaped pieces on the periphery of the center ring shaft, the inner cavity of the shell is divided into a left cavity and a right cavity, an air duct of the left cavity and the right cavity is formed between two fan-shaped pieces, the air inlet end safety trigger plugging mechanism and the air outlet end safety trigger plugging mechanism are correspondingly arranged in the left cavity and the right cavity and each comprise a valve element, a
temperature sensitive metal and a trigger arm, a valve rod is mounted at one end of a center hole of the center ring shaft in a sliding manner, the inner end of the valve rod makes tight contact with a valve body spring in the center hole of the center ring shaft, the outer end of the valve rod is connected with a conical valve head, a clamping groove is formed in the valve rod, one end of the
temperature sensitive metal is arranged in the clamping groove of the center ring shaft, and the other end of the
temperature sensitive metal is connected with the trigger arms, a compression spring and steel balls. Gas can be automatically
cut off, the leakage-prevention effect is good, repeated use is achieved, and the cost is low.