Automatic condensed water draining device for positive and negative pressure system of air conditioner

The invention discloses an automatic condensed water draining device for a positive and negative pressure system of an air conditioner. The device comprises a three-way body and a sealing cover, wherein the three-way body is provided with a longitudinal pipe; a first side pipe and a second side pipe are correspondingly arranged at two sides of the bottom part of the longitudinal pipe; the side edge of the top part of the first side plate is positioned in a central axis of the second side pipe, namely, the first die pipe is lower than the second side pipe; a sealing floating ball is arranged atan opening in the inner side of the first side pipe in the longitudinal pipe; a wastewater draining port is formed in the sidewall of the bottom part of the longitudinal pipe, and a wastewater draining plug is also equipped and is sleeved with an O-shaped ring; outer screw threads are formed in the opening ends of the longitudinal pipe and the second side pipe; and the sealing cover is provided with inner screw threads a