Double diaphragm pump and related methods
First Claim
Patent Images
1. A pump for moving a process fluid, the pump comprising:
- a first inlet pressure-activated diaphragm valve, a first outlet pressure-activated diaphragm valve, a second inlet pressure-activated diaphragm valve, and a second outlet pressure activated diaphragm valve;
a first pump chamber comprising a pressure-activated diaphragm, wherein the first pump chamber achieves fluid communication with an input line via the first inlet pressure-activated diaphragm valve, and wherein the first pump chamber achieves fluid communication with an outlet line via the first outlet pressure-activated diaphragm valve; and
a second pump chamber comprising a pressure-activated diaphragm, wherein the second pump chamber achieves fluid communication with the input line via the second inlet pressure-activated diaphragm valve, and wherein the second pump chamber achieves fluid communication with the outlet line via the second outlet pressure-activated diaphragm valve;
wherein the diaphragm of the first inlet pressure-activated diaphragm valve and the diaphragm of the first pump chamber are simultaneously moved by a first motive fluid;
wherein the diaphragm of the second inlet pressure-activated diaphragm valve and the diaphragm of the second pump chamber are simultaneously moved by a second motive fluid;
wherein the first pump chamber and the first inlet pressure-activated diaphragm valve are in fluid communication with the second outlet pressure-activated diaphragm valve; and
wherein the second pump chamber and the second inlet pressure-activated diaphragm valve are in fluid communication with the first outlet pressure-activated diaphragm valve.
5 Assignments
0 Petitions
Reexamination
Accused Products
Abstract
A pump for transferring a process fluid has a first pump chamber and a second pump chamber. A motive fluid actuates the pump chambers and control flow valves. The direction of process fluid flow is controlled by varying the amounts of pressure or the use of a vacuum. The control flow valves utilize diaphragms for actuation.
169 Citations
17 Claims
-
1. A pump for moving a process fluid, the pump comprising:
-
a first inlet pressure-activated diaphragm valve, a first outlet pressure-activated diaphragm valve, a second inlet pressure-activated diaphragm valve, and a second outlet pressure activated diaphragm valve; a first pump chamber comprising a pressure-activated diaphragm, wherein the first pump chamber achieves fluid communication with an input line via the first inlet pressure-activated diaphragm valve, and wherein the first pump chamber achieves fluid communication with an outlet line via the first outlet pressure-activated diaphragm valve; and a second pump chamber comprising a pressure-activated diaphragm, wherein the second pump chamber achieves fluid communication with the input line via the second inlet pressure-activated diaphragm valve, and wherein the second pump chamber achieves fluid communication with the outlet line via the second outlet pressure-activated diaphragm valve; wherein the diaphragm of the first inlet pressure-activated diaphragm valve and the diaphragm of the first pump chamber are simultaneously moved by a first motive fluid; wherein the diaphragm of the second inlet pressure-activated diaphragm valve and the diaphragm of the second pump chamber are simultaneously moved by a second motive fluid; wherein the first pump chamber and the first inlet pressure-activated diaphragm valve are in fluid communication with the second outlet pressure-activated diaphragm valve; and wherein the second pump chamber and the second inlet pressure-activated diaphragm valve are in fluid communication with the first outlet pressure-activated diaphragm valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A pump for moving a process fluid, the pump comprising:
-
a first inlet pressure-activated diaphragm valve, a first outlet pressure-activated diaphragm valve, a second inlet pressure-activated diaphragm valve, and a second outlet pressure activated diaphragm valve; a first pump chamber comprising a pressure-activated diaphragm, wherein the first pump chamber achieves fluid communication with an input line via the first inlet pressure-activated diaphragm valve, and wherein the first pump chamber achieves fluid communication with an outlet line via the first outlet pressure-activated diaphragm valve; a second pump chamber comprising a pressure-activated diaphragm, wherein the second pump chamber achieves fluid communication with the input line via the second inlet pressure-activated diaphragm valve, and wherein the second pump chamber achieves fluid communication with the outlet line via the second outlet pressure-activated diaphragm valve; a first motive fluid plate; a second motive fluid plate; and a process fluid body between the first motive fluid plate and the second motive fluid plate; wherein the first inlet pressure-activated diaphragm valve and the first outlet pressure-activated diaphragm valve are both defined by the second motive fluid plate and the process fluid body; and wherein the second inlet pressure-activated diaphragm valve and the second outlet pressure-activated diaphragm valve are both defined by the first motive fluid plate and the process fluid body.
-
-
14. A pump for moving a process fluid, the pump comprising:
-
a first inlet pressure-activated diaphragm valve, a first outlet pressure-activated diaphragm valve, a second inlet pressure-activated diaphragm valve, and a second outlet pressure activated diaphragm valve; a first pump chamber comprising a pressure-activated diaphragm, wherein the first pump chamber achieves fluid communication with an input line via the first inlet pressure-activated diaphragm valve, and wherein the first pump chamber achieves fluid communication with an outlet line via the first outlet pressure-activated diaphragm valve; a second pump chamber comprising a pressure-activated diaphragm, wherein the second pump chamber achieves fluid communication with the input line via the second inlet pressure-activated diaphragm valve, and wherein the second pump chamber achieves fluid communication with the outlet line via the second outlet pressure-activated diaphragm valve; a first motive fluid plate; a second motive fluid plate; and a process fluid body between the first motive fluid plate and the second motive fluid plate; wherein the first pump chamber comprises an actuation cavity defined by the first motive fluid plate and a first pump chamber cavity defined by the process fluid body; and wherein the second pump chamber comprises an actuation cavity defined by the second motive fluid plate and a second pump chamber cavity defined by the process fluid body.
-
-
15. A pump for moving a process fluid, the pump comprising:
-
a process fluid body between a first motive fluid plate and a second motive fluid plate, a first inlet pressure-activated diaphragm valve, a first outlet pressure-activated diaphragm valve, a second inlet pressure-activated diaphragm valve and a second outlet pressure-activated diaphragm valve, wherein the first inlet pressure-activated diaphragm valve and the first outlet pressure-activated diaphragm valve are each defined by one of the motive fluid plates and the process fluid body while the second inlet pressure-activated diaphragm valve and the second outlet pressure-activated diaphragm valve are each defined by the other motive fluid plate and the process fluid body; a first pump chamber and a second pump chamber, wherein the first pump chamber is defined by one of the motive fluid plates and the process fluid body define and second pump chamber is defined by the other motive fluid plate and the process fluid body; wherein the first pump chamber achieves fluid communication with an input line via the first inlet pressure-activated diaphragm valve and wherein the first pump chamber achieves fluid communication with an outlet line via the first outlet pressure-activated diaphragm valve; wherein the second pump chamber achieves fluid communication with the input line via the second inlet pressure-activated diaphragm valve and wherein the second pump chamber achieves fluid communication with the outlet line via the second outlet pressure-activated diaphragm valve; wherein a diaphragm is positioned in each pump chamber and each valve; wherein the diaphragm in the first inlet valve and the diaphragm in the first pump chamber are simultaneously moved by a first motive fluid source; and wherein the diaphragm in the second inlet valve and the diaphragm in the second pump chamber are simultaneously moved by a second motive fluid source.
-
-
16. A pump for moving a process fluid, the pump comprising:
-
a first inlet pressure-activated diaphragm valve, a first outlet pressure-activated diaphragm valve, a second inlet pressure-activated diaphragm valve, and a second outlet pressure activated diaphragm valve; a first pump chamber comprising a pressure-activated diaphragm, wherein the first pump chamber achieves fluid communication with an input line via the first inlet pressure-activated diaphragm valve, and wherein the first pump chamber achieves fluid communication with an outlet line via the first outlet pressure-activated diaphragm valve; a second pump chamber comprising a pressure-activated diaphragm, wherein the second pump chamber achieves fluid communication with the input line via the second inlet pressure-activated diaphragm valve, and wherein the second pump chamber achieves fluid communication with the outlet line via the second outlet pressure-activated diaphragm valve; a first motive fluid plate; a second motive fluid plate; and a process fluid body between the first motive fluid plate and the second motive fluid plate; wherein the diaphragm of the first inlet pressure-activated diaphragm valve and the diaphragm of the first pump chamber are simultaneously moved by a first motive fluid; wherein the diaphragm of the second inlet pressure-activated diaphragm valve and the diaphragm of the second pump chamber are simultaneously moved by a second motive fluid; wherein the first inlet pressure-activated diaphragm valve and the first outlet pressure-activated diaphragm valve are both defined by the second motive fluid plate and the process fluid body; and wherein the second inlet pressure-activated diaphragm valve and the second outlet pressure-activated diaphragm valve are both defined by the first motive fluid plate and the process fluid body.
-
-
17. A pump for moving a process fluid, the pump comprising:
-
a first inlet pressure-activated diaphragm valve, a first outlet pressure-activated diaphragm valve, a second inlet pressure-activated diaphragm valve, and a second outlet pressure activated diaphragm valve; a first pump chamber comprising a pressure-activated diaphragm, wherein the first pump chamber achieves fluid communication with an input line via the first inlet pressure-activated diaphragm valve, and wherein the first pump chamber achieves fluid communication with an outlet line via the first outlet pressure-activated diaphragm valve; a second pump chamber comprising a pressure-activated diaphragm, wherein the second pump chamber achieves fluid communication with the input line via the second inlet pressure-activated diaphragm valve, and wherein the second pump chamber achieves fluid communication with the outlet line via the second outlet pressure-activated diaphragm valve; a first motive fluid plate; a second motive fluid plate; and a process fluid body between the first motive fluid plate and the second motive fluid plate; wherein the diaphragm of the first inlet pressure-activated diaphragm valve and the diaphragm of the first pump chamber are simultaneously moved by a first motive fluid; wherein the diaphragm of the second inlet pressure-activated diaphragm valve and the diaphragm of the second pump chamber are simultaneously moved by a second motive fluid; wherein the first pump chamber comprises an actuation cavity defined by the first motive fluid plate and a first pump chamber cavity defined by the process fluid body; and wherein the second pump chamber comprises an actuation cavity defined by the second motive fluid plate and a second pump chamber cavity defined by the process fluid body.
-
Specification