초록 ▼

An integral valve diaphragm pump has a first rigid layer, a second rigid layer and a flexible membrane therebetween. Concave surfaces in the two rigid layers form a pump. The pump includes an actuating chamber which is alternately connected to a source of pressure and a source of vacuum. A pump cham

An integral valve diaphragm pump has a first rigid layer, a second rigid layer and a flexible membrane therebetween. Concave surfaces in the two rigid layers form a pump. The pump includes an actuating chamber which is alternately connected to a source of pressure and a source of vacuum. A pump chamber is connected to a fluid source and a fluid receiver through a filling check valve and a dispensing check valve, respectively. Duckbill and spring loaded ball check valves are disclosed.

대표청구항 ▼

[ What is claimed is:] [1.] An integral valve diaphragm pump comprising:a first rigid layer having a substantially planar first surface;a second rigid layer having a substantially planar second surface and a substantially planar third surface opposite said second surface;a flexible membrane;the firs

[ What is claimed is:] [1.] An integral valve diaphragm pump comprising:a first rigid layer having a substantially planar first surface;a second rigid layer having a substantially planar second surface and a substantially planar third surface opposite said second surface;a flexible membrane;the first and second rigid layers being connected in superposition with the flexible membrane therebetween and in contact with the first and second surfaces;an actuating chamber located in the first rigid layer demarcated by a first concave surface in the first surface and one side of the flexible membrane;a pump chamber located in the second layer demarcated by a second concave surface in the second surface and the other side of the flexible membrane;a first fluid passageway connected to the pump chamber and having a filling check valve therein;a second fluid passageway connected to the pump chamber having a dispensing check valve therein;a third fluid passageway connected to the actuating chamber at a first junction;a pressure source and a vacuum source connected to the actuating chamber through the third fluid passageway operative to flex the flexible membrane between the first and second concave surfaces; anda third rigid layer having a substantially planar fourth surface, said second and third rigid layers being connected in superposition at said third and fourth surfaces;wherein said filling check valve is disposed in a first chamber in said second rigid layer or said third rigid layer and said dispensing check valve is disposed in a second chamber in said second rigid layer or said third rigid layer.