CA1071470A - Floating self levelling suction device - Google Patents
Floating self levelling suction deviceInfo
- Publication number
- CA1071470A CA1071470A CA253,792A CA253792A CA1071470A CA 1071470 A CA1071470 A CA 1071470A CA 253792 A CA253792 A CA 253792A CA 1071470 A CA1071470 A CA 1071470A
- Authority
- CA
- Canada
- Prior art keywords
- pump
- suction device
- impeller chamber
- floating
- dished
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/10—Devices for removing the material from the surface
- E02B15/107—Whirling means forming a vortex in the water; cyclones
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/066—Floating-units
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A novel floating suction device or pump is provided. The pump comprises a main body portion formed at least partially of floatable material, a central axial pump impeller chamber, a plurality of circum-ferentially disposed intake nozzles leading axially inwardly and down-wardly to the impeller chamber, a pump operatively disposed within the impeller chamber, means for driving the pump, and axial discharge means from the impeller chamber. By this structure, a stable floating pump is provided which can skim off the immiscible liquid (e.g. oil) floating on the surface of another liquid (e.g. water) without, for example, skimming off too much of the water along with the oil.
A novel floating suction device or pump is provided. The pump comprises a main body portion formed at least partially of floatable material, a central axial pump impeller chamber, a plurality of circum-ferentially disposed intake nozzles leading axially inwardly and down-wardly to the impeller chamber, a pump operatively disposed within the impeller chamber, means for driving the pump, and axial discharge means from the impeller chamber. By this structure, a stable floating pump is provided which can skim off the immiscible liquid (e.g. oil) floating on the surface of another liquid (e.g. water) without, for example, skimming off too much of the water along with the oil.
Description
~ ~7~7~
This invention relates ts a floating suction device. It is particularly directed to such device which includes circumferentially disposed intake nozzles and an axially disposed discharge nozzle.
Many floatable suction devices are known, but most are parti-cularly adapted to pump selectively only the water on which the pump is floating, with the additional provision of screens across the intake opening to screen out foreign matter. A difficulty of prior art pumps of this nature is that some pumps float rather deeply. This results in the motor becoming wet as the assembly is not very stable in choppy water conditions. Moreover, they tend to tilt or list in normal opera-tion due to the weight of the hose and the way it is connected to the pump. Accordingly, an object of one aspect of this invention is the provision of such a floatable pump which is relatively stable in its floating mode.
Another important problem presented by such floatable pumps is that many of them havq relaitvely complex constructions and are conse-quently not only relatively expensive to manufacture, but also, in the event that such a pump must be dismantled for repair or maintenance9 such dismantling can be a somewhat time-consuming operation. As ~he size and weight of the commercially available pumps of this type increase, their dismantling becomes progressively more awkward and difficult.
It is accordingly an object of another aspect of the present invention to provide such a floatable pump which pump has a relatively simple but effective construction, which may be easily dismantled, when required~ for servicing or repair.
Moreover, floatable pump and motor assemblies which include a float, a rotary propeller pump and a motor are known. In such known assemblies, the propeller shaft is connected to the motor shaft by means of a flexible coupling to overcome alignment problems. It is generally considered a disadvantage, in such assemblies, for sludge or floating objects to be drawn into the pump. It is therefore an object of yet another aspect of this invention to provide an improved such assembly of , ~L~7~70 float, pump and motor~
An ob~ect oP still another aspect of this invention is to pro-vide a floating suetion deviee whieh is so disposed on the water that it may be used to skim off an immiscible liquid floating on the surface of another liquid, especially for skimming off oil floating on water.
By one broad aspect of this invention, an improved floating suction device is provided comprising: a main body portion formed at least partially of floatable material; a central axial pump impeller chamber; a plurality of circumferentially disposed intake nozzles leading axially inwardly and downwardly to the impeller chamber; a pump operatively disposed within the impeller chamber; means for driving the pump; and axial discharge means from the impeller chamber.
By one variant of this aspect, the main body portion includes a lower section including a central cylindrical boss, and a symmetrical dished rim extending outwardly therefrom, the upper surface of the dished rim extending symmetrically downwardly and inwardly to a central cavity within the boss.
By a second variant of this aspect, the main body portion includes an upper pedestal, the lower surface thereof extending symmetri-cally downwardly and inwardly to a central hollow core extendingupwardly within the pedestal.
By a preferred variant of this aspect, the main body portion comprises: a lower section including a central cylindrical boss, and a symmetrical dished rim extending outwardly therefrom, the upper sur-face of the dished rim extending symmetrically downwardly and inwardly to a central cavity within the boss; an upper pedestal, the lower sur-face thereof extending symmetrically downwardly and inwardly to a central hollow core extending upwardly within the pedestal; and a plurality of circumferentially spaced-apart spiders separating, but ~oining the upper surface of the dished rim and the lower surface of the upper pedestal~
thereby providing the intake no7~1e in the form of a dished continuously variable annulus, especially where the hollow core comprises the impeller 7~L47~) chamber and includes a pump ~tor mounted therein, the intake to the impeller chamber being a continuous clrcumferential slot, a~d also where the pump motor is securely mounted on the top surface of the upper pedestal.
, ~
By another variant, the pump ls a progressive cavity pump-Thus, by a main aspect of this invention, a free-floating skimming device is provided which drains off the top few inches of oil and/or water which is then pumped out. The pumped out oil may be collected or burned in an oil-well test burner which can typically accept up to 50% water. The skimming nozæle is stabilized but yet is free to follow changes in wave height preferably by being unrestricted in vertical movement independent of the device which suppor~s it. It should also be so mounted as to be able to follow the changes in wave slope by being free to tilt in any direction through the use of a flexible connection. This `~`~
will ensure that the intake remains parallel and just below the water level at all times. By adjusting the buoyancy, the intake cap be kept so that the oil film can be collected with relatively little water.
In the accompanying drawings, Figure 1 is a central vertical cross-sectional view of one embodiment of a skimming device according to an aspect of this invention;
and Figure 2 is a sectional view along the line II-II of Figure 1.
It is seen that the floatable skimming device 10 includes a floatation base 12 provided with a central cylindrical boss 14 and sy~,metrical outwardly extending dished rim 16 provided with an annular peripheral fender 18. The upper surface 20 of dishes rim 16 extends symmetrically downwardly and inwardly to a central cavity 22.
Spaced from the upper surface 20 of dished rim 16 by means of a plurality of circumferentially spaced-apart spiders 24 is an ~ !
upper pedestal 26, also formed of floatatiott material. The lower surface 28 of upper pedestal 26 extends symmetrically downwardly and inwardly to a . ~
7~.~7(~ .
.
-: central hollow co~e 30, extending upwardl~ coextens.i~ely with central :~
cavity 22.
Secured to the upper surface 32 of upper pedestal 26 by means i .
'':
~';', ',.
...
-~ - 3a -:, .,'..'J~
7~L~L7~
threaded bolts 34 is a pump motor 36 operat:lvely connected by shaft 38 ~ \ to the rotor 40 of a progressive cavity pump 42.
: The intake of the progressive cavity pump 42 is a continuous ; circumferential intake slot 44, and the discharge is by way of a central axial outlet 46, leading to a discharge pipe 48. The lntake slot 44 is fed along a dished continuously variable annulus 50 defined by the upper surface 20 of dished rim 16 and the lower surface 28 of upper pedestal 26.
The material of construction of the floatation device is of such a type that it is lighter in weight than water, while being rela-tively uneffected both by sea water and petroleum or oil spills. One suitable such material is foamed polyurethane.
In use, the floatation device, by proper selection of the type and volume of floatation material, is àdapted to float in the water 52 with the oil spill 54 just below the higher point of the upper surface 20 of dished rim 16. The oil 54 is thus preferentially drawn downwardly through annulus 50 to intake slot 44. The oil is pumped out through discharge pipe 48.
The floating suction device is especially adapted for use with the wave breaker oil recovery device of copending application Serial No. 253,817 filed concurrently herewith whereby, in such device, the floating suction device is free to follow changes in~both wave height and wave slope.
~ , ::
: ' : . ~ ' ' ~:
This invention relates ts a floating suction device. It is particularly directed to such device which includes circumferentially disposed intake nozzles and an axially disposed discharge nozzle.
Many floatable suction devices are known, but most are parti-cularly adapted to pump selectively only the water on which the pump is floating, with the additional provision of screens across the intake opening to screen out foreign matter. A difficulty of prior art pumps of this nature is that some pumps float rather deeply. This results in the motor becoming wet as the assembly is not very stable in choppy water conditions. Moreover, they tend to tilt or list in normal opera-tion due to the weight of the hose and the way it is connected to the pump. Accordingly, an object of one aspect of this invention is the provision of such a floatable pump which is relatively stable in its floating mode.
Another important problem presented by such floatable pumps is that many of them havq relaitvely complex constructions and are conse-quently not only relatively expensive to manufacture, but also, in the event that such a pump must be dismantled for repair or maintenance9 such dismantling can be a somewhat time-consuming operation. As ~he size and weight of the commercially available pumps of this type increase, their dismantling becomes progressively more awkward and difficult.
It is accordingly an object of another aspect of the present invention to provide such a floatable pump which pump has a relatively simple but effective construction, which may be easily dismantled, when required~ for servicing or repair.
Moreover, floatable pump and motor assemblies which include a float, a rotary propeller pump and a motor are known. In such known assemblies, the propeller shaft is connected to the motor shaft by means of a flexible coupling to overcome alignment problems. It is generally considered a disadvantage, in such assemblies, for sludge or floating objects to be drawn into the pump. It is therefore an object of yet another aspect of this invention to provide an improved such assembly of , ~L~7~70 float, pump and motor~
An ob~ect oP still another aspect of this invention is to pro-vide a floating suetion deviee whieh is so disposed on the water that it may be used to skim off an immiscible liquid floating on the surface of another liquid, especially for skimming off oil floating on water.
By one broad aspect of this invention, an improved floating suction device is provided comprising: a main body portion formed at least partially of floatable material; a central axial pump impeller chamber; a plurality of circumferentially disposed intake nozzles leading axially inwardly and downwardly to the impeller chamber; a pump operatively disposed within the impeller chamber; means for driving the pump; and axial discharge means from the impeller chamber.
By one variant of this aspect, the main body portion includes a lower section including a central cylindrical boss, and a symmetrical dished rim extending outwardly therefrom, the upper surface of the dished rim extending symmetrically downwardly and inwardly to a central cavity within the boss.
By a second variant of this aspect, the main body portion includes an upper pedestal, the lower surface thereof extending symmetri-cally downwardly and inwardly to a central hollow core extendingupwardly within the pedestal.
By a preferred variant of this aspect, the main body portion comprises: a lower section including a central cylindrical boss, and a symmetrical dished rim extending outwardly therefrom, the upper sur-face of the dished rim extending symmetrically downwardly and inwardly to a central cavity within the boss; an upper pedestal, the lower sur-face thereof extending symmetrically downwardly and inwardly to a central hollow core extending upwardly within the pedestal; and a plurality of circumferentially spaced-apart spiders separating, but ~oining the upper surface of the dished rim and the lower surface of the upper pedestal~
thereby providing the intake no7~1e in the form of a dished continuously variable annulus, especially where the hollow core comprises the impeller 7~L47~) chamber and includes a pump ~tor mounted therein, the intake to the impeller chamber being a continuous clrcumferential slot, a~d also where the pump motor is securely mounted on the top surface of the upper pedestal.
, ~
By another variant, the pump ls a progressive cavity pump-Thus, by a main aspect of this invention, a free-floating skimming device is provided which drains off the top few inches of oil and/or water which is then pumped out. The pumped out oil may be collected or burned in an oil-well test burner which can typically accept up to 50% water. The skimming nozæle is stabilized but yet is free to follow changes in wave height preferably by being unrestricted in vertical movement independent of the device which suppor~s it. It should also be so mounted as to be able to follow the changes in wave slope by being free to tilt in any direction through the use of a flexible connection. This `~`~
will ensure that the intake remains parallel and just below the water level at all times. By adjusting the buoyancy, the intake cap be kept so that the oil film can be collected with relatively little water.
In the accompanying drawings, Figure 1 is a central vertical cross-sectional view of one embodiment of a skimming device according to an aspect of this invention;
and Figure 2 is a sectional view along the line II-II of Figure 1.
It is seen that the floatable skimming device 10 includes a floatation base 12 provided with a central cylindrical boss 14 and sy~,metrical outwardly extending dished rim 16 provided with an annular peripheral fender 18. The upper surface 20 of dishes rim 16 extends symmetrically downwardly and inwardly to a central cavity 22.
Spaced from the upper surface 20 of dished rim 16 by means of a plurality of circumferentially spaced-apart spiders 24 is an ~ !
upper pedestal 26, also formed of floatatiott material. The lower surface 28 of upper pedestal 26 extends symmetrically downwardly and inwardly to a . ~
7~.~7(~ .
.
-: central hollow co~e 30, extending upwardl~ coextens.i~ely with central :~
cavity 22.
Secured to the upper surface 32 of upper pedestal 26 by means i .
'':
~';', ',.
...
-~ - 3a -:, .,'..'J~
7~L~L7~
threaded bolts 34 is a pump motor 36 operat:lvely connected by shaft 38 ~ \ to the rotor 40 of a progressive cavity pump 42.
: The intake of the progressive cavity pump 42 is a continuous ; circumferential intake slot 44, and the discharge is by way of a central axial outlet 46, leading to a discharge pipe 48. The lntake slot 44 is fed along a dished continuously variable annulus 50 defined by the upper surface 20 of dished rim 16 and the lower surface 28 of upper pedestal 26.
The material of construction of the floatation device is of such a type that it is lighter in weight than water, while being rela-tively uneffected both by sea water and petroleum or oil spills. One suitable such material is foamed polyurethane.
In use, the floatation device, by proper selection of the type and volume of floatation material, is àdapted to float in the water 52 with the oil spill 54 just below the higher point of the upper surface 20 of dished rim 16. The oil 54 is thus preferentially drawn downwardly through annulus 50 to intake slot 44. The oil is pumped out through discharge pipe 48.
The floating suction device is especially adapted for use with the wave breaker oil recovery device of copending application Serial No. 253,817 filed concurrently herewith whereby, in such device, the floating suction device is free to follow changes in~both wave height and wave slope.
~ , ::
: ' : . ~ ' ' ~:
Claims (5)
1. A floating suction device comprising:
(a) a main body portion formed at least partially of floatable materials, the type and volume thereof being selected to float said suction device at a predetermined level, said main body portion com-prising (i) a lower section including a central cylin-drical boss, (ii) a symmetrical dished rim extending outwardly therefrom, the upper surface of said dished rim extending symmetrically downwardly and inwardly to a central cavity within said boss, to provide a central axial pump impel-ler chamber;
(iii) an upper pedestal, the lower surface thereof extending symmetrically downwardly and in-wardly to a central hollow core extending upwardly within said pedestal, and (iv) a plurality of circumferentially spaced-apart spiders separating, but joining the upper surface of the dished rim and the low-er surface of the upper pedestal, thereby providing a circumferential intake nozzle in the form of a dished continuously var-iable annulus in the form of a pair of spaced-apart converging hyperboloid surfaces, (b) a pump-operatively disposed within said impeller chamber;
(c) means for driving said pump;
and (d) discharge means from said impeller chamber.
(a) a main body portion formed at least partially of floatable materials, the type and volume thereof being selected to float said suction device at a predetermined level, said main body portion com-prising (i) a lower section including a central cylin-drical boss, (ii) a symmetrical dished rim extending outwardly therefrom, the upper surface of said dished rim extending symmetrically downwardly and inwardly to a central cavity within said boss, to provide a central axial pump impel-ler chamber;
(iii) an upper pedestal, the lower surface thereof extending symmetrically downwardly and in-wardly to a central hollow core extending upwardly within said pedestal, and (iv) a plurality of circumferentially spaced-apart spiders separating, but joining the upper surface of the dished rim and the low-er surface of the upper pedestal, thereby providing a circumferential intake nozzle in the form of a dished continuously var-iable annulus in the form of a pair of spaced-apart converging hyperboloid surfaces, (b) a pump-operatively disposed within said impeller chamber;
(c) means for driving said pump;
and (d) discharge means from said impeller chamber.
2. The floating suction device of claim 1 including a pump rotor mounted within said pump impeller chamber, the intake to said pump being a continuous circumferential slot.
3. The floating suction device of claim 1 wherein said pump is a progressive cavity pump.
4. The floating suction device of claim 1 wherein said dished rim is protected by an annular peripheral fender.
5. The floating suction device of claim 1 wherein the pump motor is securely mounted on the top surface of said upper pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA253,792A CA1071470A (en) | 1976-06-01 | 1976-06-01 | Floating self levelling suction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA253,792A CA1071470A (en) | 1976-06-01 | 1976-06-01 | Floating self levelling suction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1071470A true CA1071470A (en) | 1980-02-12 |
Family
ID=4106095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA253,792A Expired CA1071470A (en) | 1976-06-01 | 1976-06-01 | Floating self levelling suction device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1071470A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2049648A1 (en) * | 1992-07-31 | 1994-04-16 | Sinemar S L | Recovery of contaminated substances floating on the surface of the sea. |
| WO2009092154A1 (en) * | 2008-01-21 | 2009-07-30 | David Leonard Prior | Device and method for cleaning up spilled oil and other liquids |
| EP3727640A4 (en) * | 2017-12-22 | 2021-09-22 | RBH Engineering Pty Ltd | Floating liquid intake |
-
1976
- 1976-06-01 CA CA253,792A patent/CA1071470A/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2049648A1 (en) * | 1992-07-31 | 1994-04-16 | Sinemar S L | Recovery of contaminated substances floating on the surface of the sea. |
| WO2009092154A1 (en) * | 2008-01-21 | 2009-07-30 | David Leonard Prior | Device and method for cleaning up spilled oil and other liquids |
| CN101855405B (en) * | 2008-01-21 | 2012-12-05 | 戴维·伦纳德·普赖尔 | Device and method for cleaning up spilled oil and other liquids |
| CN102910262A (en) * | 2008-01-21 | 2013-02-06 | 戴维·伦纳德·普赖尔 | Device and method for cleaning up spilled oil and other liquids |
| US8382978B2 (en) | 2008-01-21 | 2013-02-26 | David L. Prior | Device and method for cleaning up spilled oil and other liquids |
| US8652325B2 (en) * | 2008-01-21 | 2014-02-18 | David Leonard Prior | Device and method for cleaning up spilled oil and other liquids |
| EP3727640A4 (en) * | 2017-12-22 | 2021-09-22 | RBH Engineering Pty Ltd | Floating liquid intake |
| US11207615B2 (en) | 2017-12-22 | 2021-12-28 | Turret IP Pty Ltd | Floating liquid intake |
| US11679346B2 (en) | 2017-12-22 | 2023-06-20 | Turret IP Pty Ltd | Floating liquid intake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |