The utility model relates to a consolidate the technical field of anchor clamps, particularly, relate to an anchor clamps are consolidated to diaphragm valve membrane piece, including unfamiliar valve body (4), diaphragm chamber (1) and diaphragm (2), diaphragm (2) lie in between two end covers of diaphragm chamber (1), the outside of two end covers all is equipped with flange board (5), and bolt (3) link together two end covers, two flange board (5) and diaphragm (2), on the basis that increases end cover intensity, has guaranteed that diaphragm (2) atress is even, has eliminated the phenomenon of valve body oil impregnate oil leak.