| 摘要 |
A vacuum diaphragm pump unit comprises a dimensionally stable diaphragm b ase (1), a dimensionally stable one-piece diaphragm cover (3) having a botto m area and a side wall (36) that extends around the bottom area and widens t owards the exterior, and a one-piece pump diaphragm (2) which has a diaphrag m plate (20), a flexible diaphragm piston (21), at least one inlet valve fla p (23) and at least one outlet valve flap (24). The diaphragm plate (20) is interposed between the diaphragm base (1) and the diaphragm cover (3). The p ump diaphragm (2) and the diaphragm cover (3) are interconnected in a predet ermined position with respect to each other via connecting elements (15, 15' , 15''). The diaphragm piston (21) extends through the diaphragm base (1) an d the diaphragm piston (21) covers a pump chamber (31) of the diaphragm cove r (3). The invention is characterized in that more than three connecting ele ments (15, 15', 15'') are present and are integrally bonded and/or form-lock ed. |
