Membrane Suction Pump Unit
First Claim
1. Membrane suction pump unit with a dimensionally stable membrane frame, a dimensionally stable monobloc membrane cover, which has a pump chamber with a floor region and a side wall encircling the floor region and widening outwards away from the floor region, and with a monobloc pump membrane, which has a membrane plate, a flexible membrane piston, at least one inlet valve flap and at least one outlet valve flap, the membrane plate being arranged between the membrane frame and the membrane cover, and membrane frame, pump membrane and membrane cover being connected to one another by means of connecting elements in a preset position, the membrane piston passing through the membrane frame, and the membrane piston covering a pump chamber of the membrane cover, wherein there are more than three connecting elements and in that they form a material and/or positive fit.
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Accused Products
Abstract
A membrane suction pump unit has a dimensionally stable membrane frame (1), a dimensionally stable monobloc membrane cover (3), which has a pump chamber (31) with a floor region and a side wall (36) encircling the floor region and widening outwards away from the floor region, and a monobloc pump membrane (2), which has a membrane plate (20), a flexible membrane piston (21), at least one inlet valve flap (23) and at least one outlet valve flap (24). The membrane plate (20) is arranged between the membrane frame (1) and the membrane cover (3), and membrane frame (1), pump membrane (2) and membrane cover (3) are connected to one another by means of connecting elements (15, 15′, 15″) in a preset position. The membrane piston (21) passes through the membrane frame (1), and the membrane piston (21) covers a pump chamber (31) of the membrane cover (3). According to the invention, there are more than three connecting elements (15, 15′, 15″), forming a material and/or positive fit.
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Citations
22 Claims
- 1. Membrane suction pump unit with a dimensionally stable membrane frame, a dimensionally stable monobloc membrane cover, which has a pump chamber with a floor region and a side wall encircling the floor region and widening outwards away from the floor region, and with a monobloc pump membrane, which has a membrane plate, a flexible membrane piston, at least one inlet valve flap and at least one outlet valve flap, the membrane plate being arranged between the membrane frame and the membrane cover, and membrane frame, pump membrane and membrane cover being connected to one another by means of connecting elements in a preset position, the membrane piston passing through the membrane frame, and the membrane piston covering a pump chamber of the membrane cover, wherein there are more than three connecting elements and in that they form a material and/or positive fit.
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19. Membrane suction pump unit with a dimensionally stable membrane frame, a dimensionally stable monobloc membrane cover, which has a pump chamber with a floor region and a side wall encircling the floor region and widening outwards away from the floor region, and with a monobloc pump membrane, which has a membrane plate, a flexible membrane piston, at least one inlet valve flap and at least one outlet valve flap, the membrane plate being arranged between the membrane frame and the membrane cover, and membrane frame, pump membrane and membrane cover being connected to one another by means of connecting elements in a preset position, the membrane piston passing through the membrane frame, and the membrane piston covering a pump chamber of the membrane cover, characterized in that there are more than three connecting elements.
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20. Membrane suction pump unit with a dimensionally stable membrane frame, a dimensionally stable monobloc membrane cover, which has a pump chamber with a floor region and a side wall encircling the floor region and widening outwards away from the floor region, and with a monobloc pump membrane, which has a membrane plate, a flexible membrane piston, at least one inlet valve flap and at least one outlet valve flap, the membrane plate being arranged between the membrane frame and the membrane cover, and membrane frame, pump membrane and membrane cover being connected to one another by means of connecting elements in a preset position, the membrane piston passing through the membrane frame, and the membrane piston covering a pump chamber of the membrane cover, characterized in that the connecting elements form a material and/or positive fit.
- 21. Membrane suction pump unit with a dimensionally stable membrane frame, a dimensionally stable monobloc membrane cover, which has a pump chamber with a floor region and a side wall encircling the floor region and widening outwards away from the floor region, and with a monobloc pump membrane, which has a membrane plate, a flexible membrane piston, at least one inlet valve flap and at least one outlet valve flap, the membrane plate being arranged between the membrane frame and the membrane cover, and membrane frame, pump membrane and membrane cover being connected to one another by means of connecting elements in a preset position, the membrane piston passing through the membrane frame, and the membrane piston covering a pump chamber of the membrane cover, characterized in that the membrane cover has a thickness which is uniform over approximately its entire surface.
Specification