The invention discloses a deslagging automatic water drainer for a negative-pressure
gas pipeline. The deslagging automatic water drainer is large in push-
pull force, and comprises an accumulated
water sediment barrel and an accumulated
water discharge barrel, wherein a counterweight is arranged at the sealed end of the accumulated
water discharge barrel, a movable cover plate is arranged at the open end of the accumulated
water discharge barrel, and the middle lower part of the accumulated water
discharge barrel is hinged and supported through a support; a
slag blocking filter plate is vertically arranged in the accumulated
water sediment barrel and divides the accumulated
water sediment barrel into a
slag storage chamber and a
water storage chamber, a water inlet
pipe and an air passinghose are connected to the upper portion of the
slag storage chamber, the air passing hose is connected with the open end of the accumulated water drainage barrel, and a drainage hose is connected between the
water storage chamber and the accumulated water drainage barrel; a first air valve is arranged on the air passing hose, a
branch pipe is in T connection to the air passing hose, a second air valve is arranged on the
branch pipe, and transmission gears are arranged on valve rods of the first air valve and the second air valve; and a push-pull rod is in sliding fit with the barrel wall of the accumulated water
sediment barrel, a connecting rod is hinged to the lower end of the push-pull rod, the lower end of the connecting rod is hinged to the accumulated water drainage barrel, and the push-pull rod meshes with transmission gears on the first air valve and the second air valve simultaneously.