CA2835589A1 - An improved inlet and outlet passage design for an air driven double diaphragm pump - Google Patents
An improved inlet and outlet passage design for an air driven double diaphragm pump Download PDFInfo
- Publication number
- CA2835589A1 CA2835589A1 CA2835589A CA2835589A CA2835589A1 CA 2835589 A1 CA2835589 A1 CA 2835589A1 CA 2835589 A CA2835589 A CA 2835589A CA 2835589 A CA2835589 A CA 2835589A CA 2835589 A1 CA2835589 A1 CA 2835589A1
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- Prior art keywords
- inlet
- air
- pair
- outlet
- pump
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- 239000000463 material Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 229910001369 Brass Inorganic materials 0.000 claims description 2
- 229910001018 Cast iron Inorganic materials 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000010951 brass Substances 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims description 2
- 239000005060 rubber Substances 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000000356 contaminant Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/053—Pumps having fluid drive
- F04B45/0536—Pumps having fluid drive the actuating fluid being controlled by one or more valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention provides an improved air driven double diaphragm pump design. The pump comprises air chambers, pump chambers, diaphragms, inlet and outlet flow connectors, an air actuator, and a shaft. The pump chambers each have an inlet and an outlet passage. The inlet and outlet passages of the pump chambers are preferably in a parallel substantially horizontal relationship. The inlet and outlet passages each have an elastomeric flap valve. The air chambers and the pump chambers mate together, respectively, to form pump cavities. The diaphragms extend across the pump cavities, respectively, between the air chambers and the pump chambers. The inlet and outlet flow connectors are coupled at the inlet and outlet passage of each of the pump chambers, respectively. The pump chambers are on opposite sides of the air actuator. The shaft extends through the air actuator and is affixed at each end to the diaphragms.
Description
Title of the Invention An improved inlet and outlet passage design for an air driven double diaphragm pump Field of the Invention The field of the present invention relates to air driven double diaphragm pumps, and in particular, to an improved inlet and outlet passage design for an air driven double diaphragm flap valve pump.
Background of the Invention Air driven double diaphragm pumps are well known in the art. Air driven double diaphragm pumps have found great utility in construction and industrial uses. The durable and reliable nature of these devices as well as their ability to handle a wide variety of substances has made these pumps mandatory equipment in many applications. In many construction and maintenance operations, the portability of these devices is also a major advantage.
Reference is made to United States Patents 7,399,168; 6,901,960; 6,168,394;
RE38,239;
5,213,485; 5,169,296; 4,247,264; 4,242,941; and 4,549,467 and to United States Design Patents 484,145; 388,797; 388,796; 370,488; 331,412; 294,946; 294,947; and 275,858.
Common to the aforementioned patent publications on air driven diaphragm pumps is the disclosure of two opposed pump cavities. The pump cavities each include a pump chamber, an air chamber and a diaphragm extending fully across the pump cavity defined by these two chamber structures to split the cavity. Each pump chamber includes an inlet passage and an outlet passage controlled by check valves. The diaphragms are fixed to a common control rod which slidably extends through each of the air chamber housings.
Traditionally, actuator valves associated with such pumps have included feedback control mechanisms including a valve piston and airways on the control rod attached to the diaphragms. Air pressure is alternately generated in each air chamber according to control rod location, driving the diaphragms back and forth. In turn, the pump chambers alternately expand and contract to pump material therethrough. Such pumps are capable of pumping a wide variety of materials of widely varying consistency.
As shown in Figure 1, another common element to the aforementioned patent publications is the orientation of the inlet passages and outlet passages. Previous designs for air driven double diaphragm pumps orient the inlet passages and outlet passages in a parallel substantially vertical manner while the external hoses connecting to the inlet and outlet ports of the inlet and outlet passages are oriented perpendicular, i.e.
substantially horizontal, to the parallel substantially vertical inlet and outlet passages. Air driven double diaphragm pumps of this common design experience problems, such as:
= difficulty priming due to the extra pump head pressure created from an elevation difference between the inlet and outlet ports;
= the inlet port and outlet port of the inlet passages and outlet passages being oriented perpendicular to the inlet passages and outlet passages creates excess turbulence in the passages causing early degradation of flap valve type check valves; and = the air actuator and exhaust being in a horizontal alignment causes the air actuator to become sticky or gummy from over lubrication and air born contaminates passing through the actuator.
It would, thus, be desirable to have an air driven double diaphragm pump that is easier to prime, has less turbulence in the passages, and has an air actuator that doesn't become sticky or gummy.
Summary of the Invention The present invention has been developed in view of the prior art.
Accordingly, the present invention provides an improved inlet passage and outlet passage design for an air driven double diaphragm flap valve pump.
In a first aspect of the present invention, the inlet passages and outlet passages of an air driven double diaphragm pump are preferably in a parallel substantially horizontal relationship. This allows the inlet port and outlet port of the inlet passages and outlet passages to be substantially at the same elevation thus minimizing any extra head pressure created by the prior art pumps.
In a second aspect of the present invention, the inlet port and outlet port of the inlet passages and outlet passages of an air driven double diaphragm pump are preferably oriented substantially parallel (or in-plane) with respect to the parallel substantially horizontal inlet passages and outlet passages. This allows the flow of the material being pumped to
Background of the Invention Air driven double diaphragm pumps are well known in the art. Air driven double diaphragm pumps have found great utility in construction and industrial uses. The durable and reliable nature of these devices as well as their ability to handle a wide variety of substances has made these pumps mandatory equipment in many applications. In many construction and maintenance operations, the portability of these devices is also a major advantage.
Reference is made to United States Patents 7,399,168; 6,901,960; 6,168,394;
RE38,239;
5,213,485; 5,169,296; 4,247,264; 4,242,941; and 4,549,467 and to United States Design Patents 484,145; 388,797; 388,796; 370,488; 331,412; 294,946; 294,947; and 275,858.
Common to the aforementioned patent publications on air driven diaphragm pumps is the disclosure of two opposed pump cavities. The pump cavities each include a pump chamber, an air chamber and a diaphragm extending fully across the pump cavity defined by these two chamber structures to split the cavity. Each pump chamber includes an inlet passage and an outlet passage controlled by check valves. The diaphragms are fixed to a common control rod which slidably extends through each of the air chamber housings.
Traditionally, actuator valves associated with such pumps have included feedback control mechanisms including a valve piston and airways on the control rod attached to the diaphragms. Air pressure is alternately generated in each air chamber according to control rod location, driving the diaphragms back and forth. In turn, the pump chambers alternately expand and contract to pump material therethrough. Such pumps are capable of pumping a wide variety of materials of widely varying consistency.
As shown in Figure 1, another common element to the aforementioned patent publications is the orientation of the inlet passages and outlet passages. Previous designs for air driven double diaphragm pumps orient the inlet passages and outlet passages in a parallel substantially vertical manner while the external hoses connecting to the inlet and outlet ports of the inlet and outlet passages are oriented perpendicular, i.e.
substantially horizontal, to the parallel substantially vertical inlet and outlet passages. Air driven double diaphragm pumps of this common design experience problems, such as:
= difficulty priming due to the extra pump head pressure created from an elevation difference between the inlet and outlet ports;
= the inlet port and outlet port of the inlet passages and outlet passages being oriented perpendicular to the inlet passages and outlet passages creates excess turbulence in the passages causing early degradation of flap valve type check valves; and = the air actuator and exhaust being in a horizontal alignment causes the air actuator to become sticky or gummy from over lubrication and air born contaminates passing through the actuator.
It would, thus, be desirable to have an air driven double diaphragm pump that is easier to prime, has less turbulence in the passages, and has an air actuator that doesn't become sticky or gummy.
Summary of the Invention The present invention has been developed in view of the prior art.
Accordingly, the present invention provides an improved inlet passage and outlet passage design for an air driven double diaphragm flap valve pump.
In a first aspect of the present invention, the inlet passages and outlet passages of an air driven double diaphragm pump are preferably in a parallel substantially horizontal relationship. This allows the inlet port and outlet port of the inlet passages and outlet passages to be substantially at the same elevation thus minimizing any extra head pressure created by the prior art pumps.
In a second aspect of the present invention, the inlet port and outlet port of the inlet passages and outlet passages of an air driven double diaphragm pump are preferably oriented substantially parallel (or in-plane) with respect to the parallel substantially horizontal inlet passages and outlet passages. This allows the flow of the material being pumped to
2 flow more freely thus minimizing (reducing) turbulence created by the ninety degree turn in the prior art pumps.
In a third aspect of the present invention, the air actuator and exhaust of an air driven double diaphragm pump are preferably oriented substantially vertical. This allows excess oil from lubricating and air borne contaminants to fall away from the air valve.
The air driven double diaphragm pump according to this design may also provide effective characteristics, such as the pump being more difficult to tip over, generally being lighter such as by approximately eight kilograms, and can be more environmentally friendly that some other pumps currently available.
Accordingly, as an aspect of the present, there is provided an air driven double diaphragm pump comprising a pair of air chambers, a pair of pump chambers, a pair of diaphragms, inlet flow connectors, outlet flow connectors, an air actuator, and a shaft.
Each of the pump chambers having an inlet passage and an outlet passage. The inlet passages and outlet passages of each of the pair of pump chambers being in a parallel substantially horizontal relationship. The inlet passages and outlet passages each have an elastomeric flap valve.
The pair of air chambers and the pair of pump chambers mating together, respectively, to form a pair of pump cavities, the pair of diaphragms extend across the pair of pump cavities, respectively, between the pair of air chambers and the pair of pump chambers.
The inlet flow connectors and the outlet flow connectors are coupled at the inlet passage and the outlet passage of each of the pair of pump chambers, respectively. The pair of pump chambers are on opposite sides of the air actuator with the air actuator in the center thereof. The shaft extends through the air actuator and is affixed at each end to the pair of diaphragms.
Brief Description of the Drawings Embodiments of the present invention will be further described, by way of example, with reference to the accompanying drawings, in which:
Figure 1 shows a perspective view of a typical air driven double diaphragm pump having inlet passages and outlet passages in a parallel substantially horizontal orientation and having the air actuator and exhaust in a substantially horizontal orientation;
Figure 2 shows a perspective view of an air driven double diaphragm pump design according to an embodiment of the present invention;
In a third aspect of the present invention, the air actuator and exhaust of an air driven double diaphragm pump are preferably oriented substantially vertical. This allows excess oil from lubricating and air borne contaminants to fall away from the air valve.
The air driven double diaphragm pump according to this design may also provide effective characteristics, such as the pump being more difficult to tip over, generally being lighter such as by approximately eight kilograms, and can be more environmentally friendly that some other pumps currently available.
Accordingly, as an aspect of the present, there is provided an air driven double diaphragm pump comprising a pair of air chambers, a pair of pump chambers, a pair of diaphragms, inlet flow connectors, outlet flow connectors, an air actuator, and a shaft.
Each of the pump chambers having an inlet passage and an outlet passage. The inlet passages and outlet passages of each of the pair of pump chambers being in a parallel substantially horizontal relationship. The inlet passages and outlet passages each have an elastomeric flap valve.
The pair of air chambers and the pair of pump chambers mating together, respectively, to form a pair of pump cavities, the pair of diaphragms extend across the pair of pump cavities, respectively, between the pair of air chambers and the pair of pump chambers.
The inlet flow connectors and the outlet flow connectors are coupled at the inlet passage and the outlet passage of each of the pair of pump chambers, respectively. The pair of pump chambers are on opposite sides of the air actuator with the air actuator in the center thereof. The shaft extends through the air actuator and is affixed at each end to the pair of diaphragms.
Brief Description of the Drawings Embodiments of the present invention will be further described, by way of example, with reference to the accompanying drawings, in which:
Figure 1 shows a perspective view of a typical air driven double diaphragm pump having inlet passages and outlet passages in a parallel substantially horizontal orientation and having the air actuator and exhaust in a substantially horizontal orientation;
Figure 2 shows a perspective view of an air driven double diaphragm pump design according to an embodiment of the present invention;
3 Figure 3 shows a cross-sectional top plan view of the air driven double diaphragm pump according to an embodiment of the present invention;
Figure 4 shows a side view of the air driven double diaphragm pump according to an embodiment of the present invention;
Figure 5 shows another side view of the air driven double diaphragm pump according to an embodiment of the present invention;
Figure 6 shows a front view of the air driven double diaphragm pump according to an embodiment of the present invention;
Figure 7 shows a rear view of the air driven double diaphragm pump according to an embodiment of the present invention;
Figure 8 shows a front view of the air driven double diaphragm pump according to an embodiment of the present invention depicting the air actuator and exhaust;
and Figure 9 shows a front view of an exemplary embodiment of a stand for the air drive double diaphragm pump according to an embodiment of the present invention.
Detailed Description of the Preferred Embodiments Turning in detail to the Figure 2 to 9, a double diaphragm pump driven by alternating supplies of compressed air through an air actuator 10 is illustrated.
Diaphragm pumps can be any type of know to one of skill in the art for example. The pump includes air chambers 12 and 14 and pump chambers 16 and 18. These chambers form pump cavities.
Diaphragms 20 and 22 extend across the pump cavities. The pump chambers 16 and 18 include inlet passages 26 and 28 and outlet passages 30 and 32. The inlet passages 26 and 28 and outlet passages 30 and 32 preferably are in a parallel substantially horizontal orientation (relationship) and are preferably substantially at the same elevation from ground, with horizontal being perpendicular to gravity. A shaft 34 extends through the air actuator 10 to assembled shaft heads 36 and 38, which may also be pistons, which seal and retain the centers of the diaphragms 20 and 22. The shaft 34 operates in tension to draw one of the pistons and in turn the diaphragm associated therewith into the air chamber. This is accomplished as pressurized air is charged into the opposing air chamber.
Figure 4 shows a side view of the air driven double diaphragm pump according to an embodiment of the present invention;
Figure 5 shows another side view of the air driven double diaphragm pump according to an embodiment of the present invention;
Figure 6 shows a front view of the air driven double diaphragm pump according to an embodiment of the present invention;
Figure 7 shows a rear view of the air driven double diaphragm pump according to an embodiment of the present invention;
Figure 8 shows a front view of the air driven double diaphragm pump according to an embodiment of the present invention depicting the air actuator and exhaust;
and Figure 9 shows a front view of an exemplary embodiment of a stand for the air drive double diaphragm pump according to an embodiment of the present invention.
Detailed Description of the Preferred Embodiments Turning in detail to the Figure 2 to 9, a double diaphragm pump driven by alternating supplies of compressed air through an air actuator 10 is illustrated.
Diaphragm pumps can be any type of know to one of skill in the art for example. The pump includes air chambers 12 and 14 and pump chambers 16 and 18. These chambers form pump cavities.
Diaphragms 20 and 22 extend across the pump cavities. The pump chambers 16 and 18 include inlet passages 26 and 28 and outlet passages 30 and 32. The inlet passages 26 and 28 and outlet passages 30 and 32 preferably are in a parallel substantially horizontal orientation (relationship) and are preferably substantially at the same elevation from ground, with horizontal being perpendicular to gravity. A shaft 34 extends through the air actuator 10 to assembled shaft heads 36 and 38, which may also be pistons, which seal and retain the centers of the diaphragms 20 and 22. The shaft 34 operates in tension to draw one of the pistons and in turn the diaphragm associated therewith into the air chamber. This is accomplished as pressurized air is charged into the opposing air chamber.
4 Preferably, a peripheral bead 24 about each of the diaphragms 20 and 22 is retained within matching annular cavities formed in all of the air chambers 12 and 14 and the pump chambers 16 and 18 to seal and hold the peripheries of the diaphragms 20 and 22 in place.
Inlet flow connectors or inlet flow elbows 44 and 46 and outlet flow connectors or outlet flow discharge elbows 40 and 42 are fastened with the inlet passages 26 and 28 and the outlet passages 30 and 32, respectively. The flow connectors 40, 42, 44 and 46 are shown to be elbows with flanges 48 and 50 at either end, however, the flow connectors 40, 42, 44 and 46 may be made with other combinations of connectors, for example, straight, angled, etc.
Preferably, the flow connectors and passages are fastened by bolts, they may however be fastened by other types of fasteners traditionally used with pumps.
As shown in Figure 5, an inlet T-section or inlet manifold 52 is fastened to the inlet flow connectors 44 and 46 at the flanges 50. An inlet port 54 also includes a flange for coupling with conventional piping, hosing, etc. An outlet T-section or outlet manifold 56 with a similar outlet port 58 is fastened to the outlet flow connectors 40 and 42 at the flanges 50.
Preferably, the flow connectors and T-sections are fastened by bolts, they may however be fastened by other types of fasteners traditionally used with pumps.
In one embodiment, the flow connectors 40, 42, 44 and 46 are fastened to the inlet passages 26 and 28 and outlet passages 30 and 32 such that the inlet port 54 of T-section 52 and outlet port 58 of T-section 56 are substantially horizontal and substantially at the same elevation. This allows the inlet and outlet ports of the inlet and outlet passages to be substantially at the same elevation thus minimizing any extra head pressure created by the prior art pumps.
The inlet port 54 and outlet port 58 may be oriented in various angles with respect to the substantially horizontal plane of the flow connectors 40, 42, 44 and 46.
Preferably, the inlet port 54 and outlet port 58 are oriented substantially parallel (or in-plane) with respect to the substantially horizontal plane of the flow connectors 40, 42, 44 and 46, as shown in Figure
Inlet flow connectors or inlet flow elbows 44 and 46 and outlet flow connectors or outlet flow discharge elbows 40 and 42 are fastened with the inlet passages 26 and 28 and the outlet passages 30 and 32, respectively. The flow connectors 40, 42, 44 and 46 are shown to be elbows with flanges 48 and 50 at either end, however, the flow connectors 40, 42, 44 and 46 may be made with other combinations of connectors, for example, straight, angled, etc.
Preferably, the flow connectors and passages are fastened by bolts, they may however be fastened by other types of fasteners traditionally used with pumps.
As shown in Figure 5, an inlet T-section or inlet manifold 52 is fastened to the inlet flow connectors 44 and 46 at the flanges 50. An inlet port 54 also includes a flange for coupling with conventional piping, hosing, etc. An outlet T-section or outlet manifold 56 with a similar outlet port 58 is fastened to the outlet flow connectors 40 and 42 at the flanges 50.
Preferably, the flow connectors and T-sections are fastened by bolts, they may however be fastened by other types of fasteners traditionally used with pumps.
In one embodiment, the flow connectors 40, 42, 44 and 46 are fastened to the inlet passages 26 and 28 and outlet passages 30 and 32 such that the inlet port 54 of T-section 52 and outlet port 58 of T-section 56 are substantially horizontal and substantially at the same elevation. This allows the inlet and outlet ports of the inlet and outlet passages to be substantially at the same elevation thus minimizing any extra head pressure created by the prior art pumps.
The inlet port 54 and outlet port 58 may be oriented in various angles with respect to the substantially horizontal plane of the flow connectors 40, 42, 44 and 46.
Preferably, the inlet port 54 and outlet port 58 are oriented substantially parallel (or in-plane) with respect to the substantially horizontal plane of the flow connectors 40, 42, 44 and 46, as shown in Figure
5.
As shown in one embodiment in Figure 8, the air actuator 10 is situated on top of the pump, preferably oriented such that it is substantially vertical with an air inlet 62 at its upper end.
This allows excess oil from lubricating and air borne contaminants to fall away from the air actuator 10 and the air inlet 62 reducing the occurrence of the air actuator 10 becoming sticky or gummy.
Preferably, the exhaust 64 of the air actuator 10 is oriented such that it is substantially vertical and exhausts downwardly. This allows excess oil from lubricating and air borne contaminants to exhaust easily from the air valve 62.
0-ring seals may be associated with the flanges 48 and 50 to insure appropriate sealing.
The couplings of the flow connectors 40, 42, 44 and 46 through the flanges 48 to the pump chambers 16 and 18 are accomplished through bolts 60.
Check valves, such as elastomeric flap valves 66, are associated with each of the inlet passages 26 and 28 and outlet passages 30 and 32 to and from the pump chambers 16 and 18. Although less preferable, these check valves may also be of a spring loaded ball valve design. The incorporation of either type of valve suited for an air driven double diaphragm pump is well understood in the art as evidenced in the Patent Publications referenced in the background section of this Application and won't be discussed in detail.
A pump stand 90 may be provided, as shown in Figure 9, the pump stand 90 preferably having four legs 92 extending upward from a base 96 which each have a mounting plate 94 at one end. The mounting plate includes a pattern of mounting holes such that it may be included in the assembly of the flow connectors 44 and 46 with the pump chambers 16 and 18. The rectangular base 96 extends to join the other ends of each of the legs 92. Plates 98 may be arranged at the corners of the base 96 to accommodate casters, permanent mounting or the like.
Preferably the air driven double diaphragm flap valve pump may be constructed of aluminum, aluminum alloy, steel, stainless steel, rubber, brass, garlock gasket material, or cast iron.
Thus, an improved inlet and outlet passage design for an air driven double diaphragm check valve pump has been disclosed. While embodiments and applications of this invention have been shown and described, it would be apparent to those skilled in the art that many more modifications are possible without departing from the inventive concepts herein. The present invention therefore is not to be restricted except in the spirit of the appended claims.
As shown in one embodiment in Figure 8, the air actuator 10 is situated on top of the pump, preferably oriented such that it is substantially vertical with an air inlet 62 at its upper end.
This allows excess oil from lubricating and air borne contaminants to fall away from the air actuator 10 and the air inlet 62 reducing the occurrence of the air actuator 10 becoming sticky or gummy.
Preferably, the exhaust 64 of the air actuator 10 is oriented such that it is substantially vertical and exhausts downwardly. This allows excess oil from lubricating and air borne contaminants to exhaust easily from the air valve 62.
0-ring seals may be associated with the flanges 48 and 50 to insure appropriate sealing.
The couplings of the flow connectors 40, 42, 44 and 46 through the flanges 48 to the pump chambers 16 and 18 are accomplished through bolts 60.
Check valves, such as elastomeric flap valves 66, are associated with each of the inlet passages 26 and 28 and outlet passages 30 and 32 to and from the pump chambers 16 and 18. Although less preferable, these check valves may also be of a spring loaded ball valve design. The incorporation of either type of valve suited for an air driven double diaphragm pump is well understood in the art as evidenced in the Patent Publications referenced in the background section of this Application and won't be discussed in detail.
A pump stand 90 may be provided, as shown in Figure 9, the pump stand 90 preferably having four legs 92 extending upward from a base 96 which each have a mounting plate 94 at one end. The mounting plate includes a pattern of mounting holes such that it may be included in the assembly of the flow connectors 44 and 46 with the pump chambers 16 and 18. The rectangular base 96 extends to join the other ends of each of the legs 92. Plates 98 may be arranged at the corners of the base 96 to accommodate casters, permanent mounting or the like.
Preferably the air driven double diaphragm flap valve pump may be constructed of aluminum, aluminum alloy, steel, stainless steel, rubber, brass, garlock gasket material, or cast iron.
Thus, an improved inlet and outlet passage design for an air driven double diaphragm check valve pump has been disclosed. While embodiments and applications of this invention have been shown and described, it would be apparent to those skilled in the art that many more modifications are possible without departing from the inventive concepts herein. The present invention therefore is not to be restricted except in the spirit of the appended claims.
6
Claims (10)
1. An air driven double diaphragm pump comprising:
a pair of air chambers;
a pair of pump chambers, each having an inlet passage and an outlet passage, the inlet passage and the outlet passage of each of the pair of pump chambers being in a parallel substantially horizontal relationship, the inlet passages and the outlet passages each having an elastomeric flap valve;
a pair of diaphragms, the pair of air chambers and the pair of pump chambers mating together, respectively, to form a pair of pump cavities, the pair of diaphragms extending across the pair of pump cavities, respectively, between the pair of air chambers and the pair of pump chambers;
inlet flow connectors and outlet flow connectors are coupled at the inlet passage and the outlet passage of each of the pair of pump chambers, respectively;
an air actuator, the pair of pump chambers being on opposite sides of the air actuator with the air actuator in the center thereof; and a shaft extending through the air actuator and being affixed at each end to the pair of diaphragms.
a pair of air chambers;
a pair of pump chambers, each having an inlet passage and an outlet passage, the inlet passage and the outlet passage of each of the pair of pump chambers being in a parallel substantially horizontal relationship, the inlet passages and the outlet passages each having an elastomeric flap valve;
a pair of diaphragms, the pair of air chambers and the pair of pump chambers mating together, respectively, to form a pair of pump cavities, the pair of diaphragms extending across the pair of pump cavities, respectively, between the pair of air chambers and the pair of pump chambers;
inlet flow connectors and outlet flow connectors are coupled at the inlet passage and the outlet passage of each of the pair of pump chambers, respectively;
an air actuator, the pair of pump chambers being on opposite sides of the air actuator with the air actuator in the center thereof; and a shaft extending through the air actuator and being affixed at each end to the pair of diaphragms.
2. The air driven double diaphragm pump according to claim 1, wherein the flow connectors are substantially horizontal and in-plane with respect to the inlet passage and the outlet passage of each of the pair of pump chambers.
3. The air driven double diaphragm pump according to claim 1 or 2, further comprising:
an inlet T-section and an outlet T-section coupled to the inlet flow connectors and outlet flow connectors, respectively, the inlet T-section having inlet port and the outlet T-section having an outlet port.
an inlet T-section and an outlet T-section coupled to the inlet flow connectors and outlet flow connectors, respectively, the inlet T-section having inlet port and the outlet T-section having an outlet port.
4. The air driven double diaphragm pump according to claim 3, wherein the inlet port and the outlet port are substantially at a same elevation.
5. The air driven double diaphragm pump according to claim 3 or 4, wherein the inlet port and the outlet port are oriented substantially parallel or in-plane with the inlet passage and the outlet passage of each of the pair of pump chamber.
6. The air driven double diaphragm pump according to any one of claim 1 to 5, wherein the air actuator further comprises an exhaust.
7. The air driven double diaphragm pump according to claim 6, wherein the exhaust is oriented in a substantially vertical in a downward position.
8. The air driven double diaphragm pump according to any one of claims 1 to 7, wherein the flow connectors are elbows.
9. The air driven double diaphragm pump according to any one of claims 1 to 8, wherein the couplings are made via flanges and bolts.
10. The air driven double diaphragm pump according to any one of claims 1 to 9, wherein the pump is constructed from at least one of aluminum, aluminum alloy, steel, stainless steel, rubber, brass, garlock gasket material, and cast iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2835589A CA2835589A1 (en) | 2013-12-02 | 2013-12-02 | An improved inlet and outlet passage design for an air driven double diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2835589A CA2835589A1 (en) | 2013-12-02 | 2013-12-02 | An improved inlet and outlet passage design for an air driven double diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2835589A1 true CA2835589A1 (en) | 2015-06-02 |
Family
ID=53365493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2835589A Abandoned CA2835589A1 (en) | 2013-12-02 | 2013-12-02 | An improved inlet and outlet passage design for an air driven double diaphragm pump |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2835589A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202733A (en) * | 2021-06-18 | 2021-08-03 | 淄博祥龙测控技术有限公司 | Pneumatic sampling pump |
| CN113638870A (en) * | 2021-08-31 | 2021-11-12 | 陈宇航 | A diaphragm vacuum pump |
-
2013
- 2013-12-02 CA CA2835589A patent/CA2835589A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202733A (en) * | 2021-06-18 | 2021-08-03 | 淄博祥龙测控技术有限公司 | Pneumatic sampling pump |
| CN113638870A (en) * | 2021-08-31 | 2021-11-12 | 陈宇航 | A diaphragm vacuum pump |
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| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20161202 |