Abstract: A one-way cylinder opening valve suitable for a hydrogen energy handheld torch is provided and includes a valve body, a valve core assembly, a spring, a spring chamber, and a sealing ring. The spring chamber is connected to the valve body, the valve core assembly and the spring are arranged in the spring chamber, a valve body sealing lip is arranged on the valve body, and the sealing lip and the valve core assembly are sealed by means of a principle of compressing a non-metallic material to reach a sealing specific pressure of the non-metallic material, and the spring provides a sealing force for the valve core assembly; the sealing ring is arranged on an outer side of the valve body, so as to ensure sealing between the valve body and a gas cylinder. A through hole is provided in the spring chamber and used as a hydrogen inlet, and a hydrogen intake hole and a central flow channel of a valve core are provided in the valve core assembly.

Abstract: Disclosed is a valve mechanical linkage system. A valve comprises a main valve and a secondary valve; the system comprises a first transmission mechanism and a second transmission mechanism; the first transmission mechanism is connected with the main valve and used for converting the up-and-down reciprocating motion of the main valve into a rotational reciprocating motion; the first transmission mechanism and the second transmission mechanism are connected by means of a coupling (4), and the rotational force of the rotational reciprocating motion is transferred to the second transmission mechanism by means of the coupling (4); the second transmission mechanism is connected with the secondary valve, and achieves on-off control on the secondary valve by converting the rotational reciprocating motion into the up-and-down reciprocating motion.

Abstract: Disclosed is a valve mechanical linkage system. A valve comprises a main valve and a secondary valve; the system comprises a first transmission mechanism and a second transmission mechanism; the first transmission mechanism is connected with the main valve and used for converting the up-and-down reciprocating motion of the main valve into a rotational reciprocating motion; the first transmission mechanism and the second transmission mechanism are connected by means of a coupling (4), and the rotational force of the rotational reciprocating motion is transferred to the second transmission mechanism by means of the coupling (4); the second transmission mechanism is connected with the secondary valve, and achieves on-off control on the secondary valve by converting the rotational reciprocating motion into the up-and-down reciprocating motion.