The invention discloses a buffering type energy accumulator and relates to an energy accumulator. A
capsule is arranged in a shell, one end of the
capsule is connected with a heavy charging valve through a gas valve rod, a protection cap is arranged on the outer portion of the gas valve rod, the outer portion of the gas valve rod is fixed to one end of the shell through a round nut, a
nameplate isfurther arranged between the round nut and the shell, the other end of the shell is fixed to a flow valve body through a supporting ring, a
rubber ring, a
metal check ring, an O-shaped ring, an F4 check ring, a pressing ring and a locking nut, a
piston is arranged in the middle of the flow valve body in a penetrating mode, a bacterial type valve is arranged at the inner end of the
piston, a spring is further arranged on the outer portion of the bacterial type valve, a disc spring is arranged on the outer portion of the
piston, and the outer end of the piston is connected with the self-lockingnut through a flat
gasket. The buffering type energy accumulator is reasonable in structural design, good in buffering effect, low in maintaining and replacing cost and high in practicability, and the service life of the energy accumulator is greatly prolonged.