Multi-diaphragm metering pump
First Claim
1. A multi-diaphragm metering pump, comprising:
- first and second diaphragms mounted in a body in substantially parallel relationship and having adjacent sides and remote sides, wherein an open fluid communication path is provided within said body between said adjacent sides;
means for connecting said adjacent sides for movement of the diaphragms substantially in unison;
means for pressurizing the remote side of the first diaphragm for causing movement of the first diaphragm; and
means in said body for communicating a transient fluid to be pumped to the remote side of the second diaphragm for pumping of said transient fluid upon said movement of the first and second diaphragms in unison.
0 Assignments
0 Petitions
Accused Products
Abstract
A multi-diaphragm metering pump having first and second diaphragms mounted in a body in substantially parallel relationship, wherein an open fluid communication path is provided within the body between adjacent sides of the diaphragms and wherein each diaphragm forms a sealed wall within the body. A diaphragm stem connects the diaphragms, such that movement of the first diaphragm will cause movement of the second diaphragm substantially in unison. A source of pressurized fluid is intermittently injected into and exhausted from a remote side of the first diaphragm, thereby causing cyclical movement of the two diaphragms, whereby a transient fluid may be pumped on the remote side of the second diaphragm by the cyclical movement. In a preferred embodiment, a sealed enclosure is formed between the two diaphragms.
-
Citations
28 Claims
-
1. A multi-diaphragm metering pump, comprising:
-
first and second diaphragms mounted in a body in substantially parallel relationship and having adjacent sides and remote sides, wherein an open fluid communication path is provided within said body between said adjacent sides; means for connecting said adjacent sides for movement of the diaphragms substantially in unison; means for pressurizing the remote side of the first diaphragm for causing movement of the first diaphragm; and means in said body for communicating a transient fluid to be pumped to the remote side of the second diaphragm for pumping of said transient fluid upon said movement of the first and second diaphragms in unison.
-
-
2. A multi-diaphragm metering pump, comprising:
-
a pump body having first and second chambers, said chambers having adjacent openings providing means to freely communicate a fluid between the two chambers; a first diaphragm mounted in the first chamber and forming a sealed wall within said first chamber; a second diaphragm mounted in the second chamber and forming a sealed wall within said second chamber, such that a sealed enclosure is formed between said first and second diaphragms within said pump body; and a stem rigidly connecting said first and second diaphragms within said sealed enclosure, such that movement of said first diaphragm will cause movement of said second diaphragm substantially in unison.
-
-
3. A multi-diaphragm metering pump operated by a pressurized fluid for pumping a transient fluid, comprising:
-
a pump body having a motor chamber and a pumping chamber, said chambers having adjacent openings providing means to freely communicate a fluid between the two chambers; a pressurizing diaphragm and a pumping diaphragm mounted in substantially parallel relationship in said motor and pumping chambers, respectively, said diaphragms each having an adjacent side facing the other diaphragm and a remote side facing away from the other diaphragm and each forming a sealed wall within said motor and pumping chambers, respectively, wherein a sealed enclosure is formed between said adjacent sides including said adjacent openings; a diaphragm stem rigidly connecting the adjacent sides of the pressurizing and pumping diaphragms within said sealed enclosure; means for cyclically providing the pressurized fluid to the motor chamber on the remote side of the pressurizing diaphragm for causing cyclical movement of said pressurizing and pumping diaphragms substantially in unison, wherein the fluid pressure within said sealed enclosure increases during movement of the pressurizing diaphragm in the pumping direction, thereby exerting a force across the adjacent side of the pumping diaphragm in the pumping direction independent of that caused by movement of said diaphragm stem; and means for controlled intake and discharge of the transient fluid in the pumping chamber on the remote side of the pumping diaphragm for pumping said transient fluid by said cyclical movement. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A multi-diaphragm metering pump configuration, comprising:
-
two pair of diaphragms mounted in a body, each pair of diaphragms having a pressurizing diaphragm and a pumping diaphragm positioned substantially parallel and connected for movement in unison; each pressurizing diaphragm forming a sealed wall within said body and having a pressurizing side remote from the pumping diaphragm to which that pressurizing diaphragm is connected; each pumping diaphragm forming a sealed wall within said body and having a pumping side remote from the pressurizing diaphragm to which that pumping diaphragm is connected; each pair of diaphragms having an open fluid communication path provided between adjacent sides of the respective pressurizing and pumping diaphragm, wherein a sealed enclosure is formed between said adjacent sides within said body; means for controlled intake and discharge of a transient fluid to be pumped to and from, respectively, said remote side of each pumping diaphragm; and means for cyclically providing a pressurized fluid to said pressurizing side of each pressurizing diaphragm to cause said movement in unison of each pair of diaphragms for causing pumping of the transient fluid by each said pumping diaphragm, wherein the fluid pressure within the sealed enclosure formed by each pair of diaphragms increases during the movement of the respective pressurizing diaphragm in the pumping direction, thereby exerting a force on the respective pumping diaphragm. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A multi-diaphragm metering pump, comprising;
-
first and second diaphragms mounted in a body in substantially parallel relationship and having adjacent sides and remote sides; a stem rigidly connecting said adjacent sides for movement of said first and second diaphragms in substantial unison, said stem being spaced from said body without fluid seals between said stem and said body; a first chamber formed on the remote side of said first diaphragm for being cyclically pressurized and depressurized for causing movement of said first diaphragm; and a second chamber formed on the remote side of said second diaphragm for pumping a transient fluid to and from said second chamber upon said movement of said first diaphragm.
-
-
26. A multi-diaphragm metering pump, comprising:
-
a pump body having first and second chambers, said chambers having adjacent openings providing means to freely communicate a fluid between the two chambers; a first diaphragm mounted in the first chamber and forming a sealed wall within said first chamber; a second diaphragm mounted in the second chamber and forming a sealed wall within said second chamber, such that a sealed enclosure is formed between said first and second diaphragms within said pump body; and means provided in said enclosure between said first and second diaphragms for causing movement of said second diaphragm upon movement of said first diaphragm toward said second diaphragm.
-
-
27. A multi-diaphragm metering pump operated by a pressurized fluid for pumping a transient fluid, comprising:
-
a pump body having a motor chamber and a pumping chamber, said chambers having adjacent openings providing means to freely communicate a fluid between the two chambers; a pressurizing diaphragm and a pumping diaphragm mounted in said motor and pumping chambers, respectively, said diaphragms each having an adjacent side facing the other diaphragm and a remote side facing away from the other diaphragm and each forming a sealed wall within said motor and pumping chambers, respectively, wherein a sealed enclosure is formed between said adjacent sides including said adjacent openings; means provided in said sealed enclosure between said pressurizing and pumping diaphragms for causing movement of said pumping diaphragm upon movement of said pressurizing diaphragm toward said pumping diaphragm; means for cyclically providing the pressurized fluid to the motor chamber on the remote side of the pressurizing diaphragm for causing cyclical movement of said pressurizing and pumping diaphragms, wherein the fluid pressure within said sealed enclosure increases during movement of the pressurizing diaphragm in the pumping direction, thereby exerting a force across the adjacent side of the pumping diaphragm in the pumping direction; and
;means for controlled intake and discharge of the transient fluid in the pumping chamber on the remote side of the pumping diaphragm for pumping said transient fluid by said cyclical movement.
-
-
28. A multi-diaphragm metering pump configuration, comprising:
-
two pair of diaphragms mounted in a body, each pair of diaphragms having a pressurizing diaphragm and a pumping diaphragm; each pressurizing diaphragm forming a sealed wall within said body and having a pressurizing side remote from the pumping diaphragm of said pair of diaphragms; each pumping diaphragm forming a sealed wall within said body and having a pumping side remote from the pressurizing diaphragm of said pair of diaphragms; each pair of diaphragms having an open fluid communication path provided between adjacent sides of the respective pressurizing and pumping diaphragm, wherein a sealed enclosure is formed between said adjacent side within said body; means provided in said sealed enclosure between each pair of said diaphragms for causing movement of said pumping diaphragm upon movement of said pressurizing diaphragm toward said pumping diaphragm of each pair of diaphragms; means for controlled intake and discharge of a transient fluid to be pumped to and from, respectively, said remote side of each pumping diaphragm; and means for cyclically providing a pressurized fluid to said pressurizing side of each pressurizing diaphragm to cause said movement of each pair of diaphragms for causing pumping of the transient fluid by each said pumping diaphragm, wherein the fluid pressure within the sealed enclosure formed by each pair of diaphragms increases during the movement of the respective pressurizing diaphragm in the pumping direction, thereby exerting a force on the respective pumping diaphragm.
-
Specification