Belleville spring valve system for large-damping shock absorber recovery valve

The invention provides a belleville spring valve system for a large-damping shock absorber recovery valve. The system comprises a piston, wherein a first gasket, a circulating valve limiter, a secondgasket, a circulating valve spring, a circulating valve plate and a third gasket are sequentially arranged above the piston from top to bottom, a fourth gasket, a recovery throttle valve plate, a recovery valve plate, a recovery valve limiter, a recovery valve spring, a recovery valve gasket and a recovery valve nut are sequentially arranged below the piston from top to bottom, and a piston ring is arranged in an annular groove in the upper end of the piston. Through cooperation of the first gasket, the second gasket, the circulating valve spring, the circulating valve plate, the third gasket,the piston ring, the fourth gasket, the recovery throttle valve plate, the recovery valve plate, the recovery valve limiter, the recovery valve spring, the recovery valve gasket and the recovery valve nut, an adjustable dampi