Sealing gasket structure of plate heat exchanger

The invention relates to a sealing gasket structure on a plate heat exchanger plate. The sealing gasket structure of the plate heat exchanger comprises a sealing gasket body, the upper surface and the lower surface of the section of the sealing gasket are defined by two arc lines with different radiuses, a trapezoid plane boss is arranged in the center of the upper surface, and the side face of the sealing gasket body is arranged to be concave. When a sealing gasket is extruded, an upper plate sheet is in extrusion contact with the upper surface of the sealing gasket, the sealing gasket has a self-closing function with the plate sheet along with the increase of the pre-tightening force due to the fact that a plate sheet sealing groove is arc-shaped, and meanwhile, the sealing gasket can be automatically positioned, and the sealing gasket is prevented from rolling in the sealing groove. 本发明涉及一种板式换热器板片上的密封垫片结构。板式换热器密封垫片结构，包括密封垫片本体，所述密封垫片截面的上下表面是由两条半径不同的弧线围成，上表面中心有一个梯形平面凸台，密封垫片本体侧面设置成凹形。当挤压密封垫片时，上板片与密封垫片的上表面发生挤压