The invention discloses a sealing testing
machine and aims to provide the sealing testing
machine which is convenient to operate, high in test result accuracy and capable of preventing two tube ends of a
ball valve from being damaged by clamping. The sealing testing comprises an air
feed pump, an air
pressure sensor, a main frame, two push plate cylinders, two lateral frames, a main end cover and an auxiliary end cover. The two push plate cylinders are respectively arranged on the two lateral frames, wherein a
piston rod of one push plate cylinder is connected with the main end cover, and a
piston rod of the other push plate cylinder is connected with the auxiliary end cover. The main end cover is provided with a main elastic sealing ring pad. The auxiliary end cover is provided with an auxiliary elastic sealing ring plate. The main end cover is provided with a main cover air hole. The sealing testing has the advantages that the
ball valve is positioned and clamped in position, the sealing performance is ensured, and the
ball valve is prevented from being damaged by clamping; a sealing structure with a self-adaptive adjustment function is provided, and the sealing effect in a
high pressure detection process is strengthened; in addition, an auxiliary positioning structure is provided, the end covers are prevented from returning, the push plate cylinders are protected, the sealing effect is improved, and the stability of the detection process is maintained.