Bypass and demand pump and valve system for bypass and demand pump
AssigneeDelavan AG Pumps, Inc.
InventorsLogan Cipala, Matt Johnson, David Beaudry
Life of this patent
Estimating the term…
Abstract
A diaphragm pump such as a three-chamber diaphragm pump includes a head having an inlet port and an outlet port and defining an inlet side including inlet chambers; and an outlet side having a center outlet chamber. Each of the inlet chambers includes an associated inlet valve. A single shutoff valve controlling fluid flow to the center outlet chamber and a single bypass valve in fluid communication between the center outlet chamber and the inlet side. The single shutoff valve has a plunger with an oval cross-section extending into the center outlet chamber. The single shutoff valve and the single bypass valve have adjustable pressure set points that are adjustable independently of one another.
Claims11
A diaphragm pump comprising:
- a head comprising an inlet port and an outlet port and defining an inlet side including a plurality of inlet chambers;
- a diaphragm;
- and an outlet side having a center outlet chamber intermediate the plurality of inlet chambers;
- a plurality of inlet valves, wherein each of the plurality of inlet chambers includes an associated inlet valve of the plurality of inlet valves, and the diaphragm is sequentially engaged by each of the inlet valves of the plurality of inlet valves;
- a single shutoff check valve controlling fluid flow from the center outlet chamber, the single shutoff check valve comprising a plunger in the center outlet chamber movable between a fully closed position and an open position;
- a single bypass valve within the center outlet chamber and in fluid communication with the center outlet chamber and each of the plurality of inlet chambers, the center outlet chamber intersecting each of the plurality of inlet chambers;
- a single shutoff switch, the single shutoff check valve being actuated by the single shutoff switch.
A head for a diaphragm pump;
- the head comprising:
- an inlet port and an outlet port and defining an inlet side including a plurality of inlet chambers;
- a diaphragm;
- and an outlet side having a center outlet chamber intermediate the plurality of inlet chambers;
- a plurality of inlet valves, wherein each of the plurality of inlet chambers includes an associated inlet valve of the plurality of inlet valves, and the diaphragm is sequentially engaged by each of the inlet valves of the plurality of inlet valves;
- a single shutoff check valve controlling fluid flow from the center outlet chamber, the single shutoff check valve comprising a plunger in the center outlet chamber movable between a fully closed position and an open position;
- a single bypass valve within the center outlet chamber and in fluid communication with the center outlet chamber and each of the plurality of inlet chambers, the center outlet chamber intersecting each of the plurality of inlet chambers;
- a single shutoff switch, the single shutoff check valve being actuated by the single shutoff switch.
Dependencies are inferred from the claim text.