Sucking and mixing device for recycled concrete trial preparation

The invention relates to a stirring device for recycled concrete preparation, which comprises a base, a stirring barrel arranged on the base and having an upper opening structure, and a plurality of stirring blades rotatably connected in the stirring barrel, and a lifting mechanism for driving sediments to move towards the opening of the stirring barrel is also arranged in the stirring barrel. The lifting mechanism comprises a mounting ring coaxially arranged in the stirring barrel, a push plate rotationally connected to the inner wall of the mounting ring in the circumferential direction and a reciprocating driving mechanism for driving the mounting ring to reciprocate, and an abutting block for limiting the push plate to move towards the bottom surface of the stirring barrel is arranged on the inner wall of the mounting ring; the abutting block can abut against the lower end of a push plate arranged perpendicular to the axis of the stirring barrel, and a gap is reserved between the push plate and the stirri