Underwater concrete efficient pouring construction equipment for diaphragm wall

The invention relates to underground diaphragm wall underwater concrete efficient pouring construction equipment which comprises a guide pipe, a buffering structure, a sealing cover and a locking structure, the sealing cover is rotatably arranged at the bottom of the guide pipe through a hinge, the buffering structure is located in the guide pipe, and the buffering structure comprises a rectangular groove, a first spring and a baffle. Rectangular grooves are formed in the two sides of the bottom in the guide pipe correspondingly. A sealing structure of the bottom of a traditional guide pipe is changed, a sealing cover is rotationally arranged on one side of the bottom of the guide pipe through a hinge, the sealing cover and the guide pipe can be integrated, in the concrete pouring process, a baffle enters a rectangular groove firstly, then a protruding block enters a hole, a clamping block is pounded into a cavity, and the sealing cover is arranged on the bottom of the guide pipe. The sealing cover can move d