Membrane suction pump unit

F - Mech Eng,Light,Heat,Weapons – 04 – B

Patent

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Details

F04B 45/04 (2006.01) A61M 1/06 (2006.01) F04B 49/03 (2006.01)

Patent

CA 2679865

A vacuum diaphragm pump unit comprises a dimensionally stable diaphragm base (1), a dimensionally stable one-piece diaphragm cover (3) having a bottom area and a side wall (36) that extends around the bottom area and widens towards the exterior, and a one-piece pump diaphragm (2) which has a diaphragm plate (20), a flexible diaphragm piston (21), at least one inlet valve flap (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 pump diaphragm (2) and the diaphragm cover (3) are interconnected in a predetermined position with respect to each other via connecting elements (15, 15', 15''). The diaphragm piston (21) extends through the diaphragm base (1) and the diaphragm piston (21) covers a pump chamber (31) of the diaphragm cover (3). The invention is characterized in that more than three connecting elements (15, 15', 15'') are present and are integrally bonded and/or form-locked.

Un ensemble pompe aspirante à membrane comprend un support de membrane (1) indéformable, un couvercle de membrane (3) en une seule pièce, indéformable, qui présente une chambre de pompe (31) ayant une zone de fond et une paroi latérale (36) entourant la zone de fond et s'étendant de ladite zone de fond vers l'extérieur, et une membrane de pompe (2) en une seule pièce, laquelle comporte une plaque de membrane (20), un piston de membrane (21) souple, au moins un clapet de soupape d'admission (23) et au moins un clapet de soupape de refoulement (24). La plaque de membrane (20) est disposée entre le support de membrane (1) et le couvercle de membrane (3), le support de membrane (1), la membrane de pompe (2) et le couvercle de membrane (3) étant reliés entre eux, en position prédéterminée, au moyen d'éléments de raccordement (15, 15', 15''). Le piston de membrane (21) traverse le support de membrane (1), ledit piston de membrane (21) recouvrant une chambre de pompe (31) du couvercle de membrane (3). L'invention est caractérisée en ce qu'il est prévu plus de trois éléments de raccordement (15, 15', 15''), et en ce que ceux-ci forment une liaison de matière et/ou une complémentarité de forme.

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