Novel self-balancing gate valve

The utility model discloses a novel self-balancing gate valve which comprises a valve body, a flow channel is formed in the valve body, a longitudinal hole is formed in the valve body, a buttress is installed on the flow channel, a through hole is formed in the buttress, an insertion cavity is formed in the valve body, a circular ring cylinder for pressing the buttress is inserted in the insertion cavity, a group of liquid outlet holes are formed in the circular ring cylinder, and an insertion block is arranged at a cavity of the circular ring cylinder. A gap is formed between the top face of the inserting block and the end face of the inserting cavity, an inserting hole is formed in the inserting block, a valve rod is arranged at the position of the inserting hole, a first ring-shaped groove with the section being in a left semicircle shape is formed in the inserting hole, a second ring-shaped groove with the section being in a right semicircle shape is formed in the valve rod, and the first ring-shaped groo