The present invention provides an underground drainage treatment device for an
urban park and a method for using the device, which relates to the technical field related to urban drainage systems, including a
water storage tank, wherein the upper side of the
water storage tank is fixedly connected to a well seat, the upper side of the well seat is hingedly connected to a well cover, one side of the bottom of the
water storage tank is fixedly connected to a pump body, a pressure relief
assembly is installed at the connection between the input end of the pump body and the
water storage tank, a reciprocating
assembly is installed on the inner wall of one side of the
water storage tank, a transmission
assembly is connected between the pump body and the reciprocating assembly, a plurality of levers are provided on the reciprocating assembly, and a plurality of
water filter holes are arranged in an array on the well cover, the
water filter holes are designed in a strip-shaped structure, in
rainy weather, rainwater leaks through the
water filter holes and is cached in the
water storage tank, the float lifts the lever to pass through the water filter hole, and after the liquid level in the water
storage tank drops, the float and the lever re-retract into the water
storage tank, which is no different from a normal well cover and will not affect the normal passage of pedestrians in the
urban park.