Evaporator plate shell buckle

The utility model discloses an evaporator plate shell buckle. The evaporator plate shell buckle is used in cooperation with a screw. The evaporator plate shell buckle comprises an outer barrel with the sealed front end and the open rear end. An inner barrel with the open rear end is arranged in the outer barrel. The inner barrel and the outer barrel are coaxially arranged. A screw hole is formed in the front end of the inner barrel, a truncated-cone-shaped protrusion with the front end smaller than the rear end is arranged on the front end face of the outer barrel, the truncated-cone-shaped protrusion and the outer barrel are coaxially arranged, multiple longitudinal notches are formed in the truncated-cone-shaped protrusion in the radius direction and cut the truncated-cone-shaped protrusion into multiple disconnected wedge blocks, the wedge blocks can be diffused outwards and deformed in the radial extrusion process, an axial through hole is formed in the center of the truncated-cone-shaped protrusion, the axial through hole and the screw hole are coaxially formed, the diameter of the axial through hole is smaller than that of the screw, and a truncated-cone-shaped groove matched with the truncated-cone-shaped protrusion is formed in the portion, corresponding to the screw, in the evaporator.