Universal air suction cover

The universal air suction cover comprises a push rod, a first connecting rod, a second connecting rod, an air suction cover body and an air pipe, a base plate is arranged on the upper side surface of the push rod, four threaded holes evenly penetrate through the edge of the upper side surface of the base plate, and the air pipe penetrates through the upper surface of the base plate and is arranged in the push rod. A first bearing is rotationally installed on the outer surface of the end, away from the base plate, of the push rod, two first short rods are symmetrically installed on the outer surface of the first bearing, and two first connecting pieces are symmetrically installed on the upper side surface of the first connecting rod. By arranging the second connecting rod and the air suction cover, the rotation angle of the air suction cover is 360 degrees, the universal air suction operation is met, protection pads are arranged at the abutting positions of the air pipe, the air suction cover and the second co