Internal structure of Ou Man clutch cylinder

From left to right, there are pipe joint, gasket, spring seat, spring seat, return spring, spring, valve seat, oil inlet valve, piston lower cup, gasket, pipe joint, piston lower cup, piston, washer, spring retaining ring, dust cover, push rod, lock nut, connecting fork, gasket, limit screw and pump body.

Working principle: the diaphragm cylinder driven by gas force and the intake valve with pressure fork unloader can be used together to realize wind unloading and windless loading. That is, when the compressor needs unloading, instrument air (usually low-pressure nitrogen) is introduced into the upper part of the diaphragm, and the diaphragm overcomes the spring force of the return spring to drive the ejector rod of the diaphragm cylinder to move to the compressor cylinder side and press against the unloader, so that the air inlet valve is forcibly opened to realize unloading. On the contrary, when there is no instrument wind, the diaphragm drives the ejector rod of the diaphragm cylinder to return to the top dead center under the spring force of the return spring to realize loading.