US20160186409A1 - Suction head for a dredger - Google Patents
Suction head for a dredger Download PDFInfo
- Publication number
- US20160186409A1 US20160186409A1 US14/651,563 US201314651563A US2016186409A1 US 20160186409 A1 US20160186409 A1 US 20160186409A1 US 201314651563 A US201314651563 A US 201314651563A US 2016186409 A1 US2016186409 A1 US 2016186409A1
- Authority
- US
- United States
- Prior art keywords
- suction head
- inlet
- dredge
- sand
- flow
- 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.)
- Abandoned
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/902—Component parts, e.g. arrangement or adaptation of pumps for modifying the concentration of the dredged material, e.g. relief valves preventing the clogging of the suction pipe
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/8833—Floating installations
- E02F3/885—Floating installations self propelled, e.g. ship
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9243—Passive suction heads with no mechanical cutting means
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9243—Passive suction heads with no mechanical cutting means
- E02F3/925—Passive suction heads with no mechanical cutting means with jets
Definitions
- the present invention relates to a suction head for a dredger, such a suction head having;
- JP61028635 A discloses a suction head device for sludge dredging work.
- the device has a rotator with a screw blade provided along an opening in the bottom of the body to permit dredging work with high sludge contents.
- This known device requires a high number of parts and is relatively complex for increase the sludge contents.
- FR834639 (A) disclose a suction head for a trailing dredger.
- FR834639 aims to perform dredging of very permeable soils with a high concentration. Therefore, the draghead is traversed by a convergent nozzle directed towards the surface. The nozzle is situated at the front of the draghead which is the leading edge of the draghead.
- US2007130807 (A1) relates to dredge heads, for use with a dredging system.
- US2007130807 aims to provide a dredge heads having a moveable grate member, adapted and configured to selectively extend across the opening of the dredge head, as desired by a user.
- the movable grate member enables a user to clear the dredge head of plugging masses or blockages without having to de-energize the dredge system pump.
- the movable grate member enable a user to clear the dredge head of plugging masses or blockages without requiring the user to manually withdraw the plugging masses or blockages from the opening of the suction/dredge heads by using his or her hand.
- the invention aims to provide a suction head for a dredger which head enables to operate the dredge at a high sludge content.
- Another object of the invention is to improve a suction head for a dredger and partly solve at least one of the problems associated with known suction heads.
- Yet another object of the invention is to provide an alternative suction head for a dredger.
- a suction head for a dredger comprising;
- the lateral flow associated with the side inlet causes swirl in the suction head locally at the sand inlet and therefore enhances formation of a sand/water mixture which causes a higher sand share in the mixture when the mixture enters the outlet. This is beneficial in terms of operational costs. Less water is pumped as a transport medium which saves energy and also reduces the overflow losses.
- the higher sand share or high sludge content is also referred to as high density dredging.
- the side inlet and the outlet being arranged at opposite sides of the suction head is beneficial in terms of effect of the side inlet because the lateral flow extends along the entire width of the suction head, which means the entire flow of dredge.
- the side inlet means that the flow which enters there through has a component which is lateral relative to the dredge flow direction at the sand inlet.
- the side inlet is arranged at the side of the suction head relative to its direction of travel.
- FR834639 (A) situates its nozzle at the front of the draghead which is the leading edge of the draghead. In addition, such a nozzle does not cause swirl for formation of a sand/water mixture with a higher sand share.
- the side inlet is transversely oriented relative to the sand inlet. This is optimal in terms of effect of the side inlet.
- the side inlet in use, faces away from the sand bed to be sucked away for taking in relative clear water. This even more makes clear that the lateral flow is different from the flow of dredge which is the main flow.
- the sand inlet has a sand inlet cross sectional area and the side inlet has a side inlet cross sectional area, and the side inlet cross sectional area is relative small with respect to the sand inlet cross sectional area, preferably between 10-25% of the sand inlet cross sectional area.
- the side inlet changes over, preferably smoothly changes over, into the sand inlet. This enables a more simple configuration and manufacture of the suction head.
- the sand inlet and the side inlet are integrally formed. This enables an even more simple configuration and manufacture of the suction head.
- the suction head comprises a number of side inlets.
- the suction head comprises a jet water device having a jet water outlet arranged for introducing a flow into a side inlet associated with the jet water outlet. This even more increases the effect of the lateral flow.
- the jet water outlet is fluidly coupled with the side inlet associated with the jet water outlet.
- the suction head comprises a passive or active excavated layer height adjusting device.
- the layer adjusting device can be passive or active, wherein active means that the height of the excavated layer is a result of a set value and in case of a passive layer adjusting device, the excavated layer is a result of for example the weight of the suction head.
- a dredging vessel like a hopper, comprising a suction head according to the invention.
- the dredging vessel may use an outboard submersed dredge pump which is even more beneficial for high density dredging.
- this is realized with a method for operating a suction head for a dredger, the suction head comprising;
- the invention further relates to a device comprising one or more of the characterising features described in the description and/or shown in the attached drawings.
- the invention further relates to a method comprising one or more of the characterising features described in the description and/or shown in the attached drawings.
- FIG. 1 in perspective view a schematic drawing of a first embodiment of a suction head according to the invention
- FIG. 2 in perspective view a further embodiment of a suction head according to the invention.
- FIG. 3 another perspective view of a suction head according to FIG. 2 .
- FIG. 1 shows a suction head 1 for a dredger. Such a suction head 1 is dragged by a dredger along the sand bed 5 to be sucked away.
- the suction head 1 comprises an outlet 2 for fluidly coupling the suction head 1 with a suction tube 3 for transport of dredge to the loading space of a floating dredger, which loading space and dredger are not shown.
- the suction tube 3 usually extends in the dragging direction 24 of the suction head 1 as is shown here.
- the suction head 1 comprises a sand inlet 4 .
- this inlet 4 in use faces a sand bed 5 to be sucked away.
- the inlet 4 and the top face of the sand bed 5 coincide however this coinciding is not strictly required as is clear from FIGS. 2 and 3 wherein the inlet 4 and the top face of the sand bed 5 do not coincide however the inlet 4 still faces a sand bed 5 to be sucked away.
- the inlet 4 takes in a flow of dredge 6 in the suction head 1 .
- the flow of dredge 6 runs in a dredge flow direction 7 at the sand inlet 4 and then continuous through the suction head 1 to the outlet 2 .
- the suction head 1 comprises a side inlet 8 which is fluidly coupled with the sand inlet 4 .
- the suction head 1 has one side inlet 8 .
- the side inlet 8 and the outlet 2 are mutually arranged for introducing a lateral flow 9 from outside the suction head 1 into the suction head locally at the sand inlet 4 .
- the lateral flow 9 has a lateral flow direction 12 , at the sand inlet 4 , which runs substantially transverse relative to the dredge flow direction 7 for causing swirl in the suction head 1 locally at the sand inlet 4 .
- the side inlet 8 is transversely oriented relative to the sand inlet 4 which is optimal in terms of causing swirl in the suction head 1 locally at the sand inlet 4 .
- the side inlet 8 faces away from the sand bed 5 to be sucked away for taking in relative clear water, this clear water is however not strictly required for causing swirl in the suction head 1 locally at the sand inlet 4 .
- the sand inlet 4 has a sand inlet cross sectional area 10 and the side inlet 8 has a side inlet cross sectional area 11 .
- the side inlet cross sectional area 11 is relative small with respect to the sand inlet cross sectional area 10 , here between 10-25% of the sand inlet cross sectional area 10 .
- the sand inlet cross sectional area 10 is defined by frame members of the suction head 1 , in FIG. 2, 3 by frame members 17 , 18 , 19 , where frame members 18 , are an imaginary limitation.
- the side inlet cross sectional area 11 is defined by side inlet frame members 13 , 14 , 15 , 16 .
- the side inlet cross sectional area 11 is defined by side inlet frame members 18 , 21 , where frame member 18 is an imaginary limitation.
- the side inlet 8 changes smoothly over into the sand inlet 4 .
- the side inlet 8 and the sand inlet 4 share a common imaginary frame member 18 .
- the sand inlet 4 and the side inlet 8 may be integrally formed.
- the side inlet 8 and the outlet 2 are arranged at opposite sides of the suction head 1 .
- the suction head 1 may comprise a jet water device (not shown) having a jet water outlet arranged for introducing a flow into a side inlet 8 associated with the jet water outlet.
- the jet water outlet may be fluidly coupled with the side inlet 8 associated with the jet water outlet.
- a lateral flow 9 is introduced at the sand inlet 4 , relative to the dredge flow direction 7 , in the suction head 1 locally at the sand inlet 4 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
A suction head (1) for a dredger, includes;—an outlet (2) for fluidly coupling the suction head with a suction tube (3) for transport of dredge to the loading space of a floating dredger;—a sand inlet (4), which in use faces a sand bed (5) to be sucked away, for taking in a flow of dredge (6) in the suction head, and which flow of dredge runs in a dredge flow direction (7) at the sand inlet;—a side inlet (8) fluidly coupled with the sand inlet, wherein the side inlet and the outlet are arranged at opposite sides of the suction head for introducing a lateral flow (9) from outside the suction head into the suction head locally at the sand inlet, which lateral flow runs substantially transverse relative to the dredge flow direction.
Description
- The present invention relates to a suction head for a dredger, such a suction head having;
-
- an outlet for fluidly coupling the suction head with a suction tube for transport of dredge to the loading space of a floating dredger, and a
- a sand inlet, which in use faces a sand bed to be sucked away, for taking in a flow of dredge in the suction head, and which flow of dredge runs in a dredge flow direction at the sand inlet.
- JP61028635 A discloses a suction head device for sludge dredging work. The device has a rotator with a screw blade provided along an opening in the bottom of the body to permit dredging work with high sludge contents. This known device requires a high number of parts and is relatively complex for increase the sludge contents.
- FR834639 (A) disclose a suction head for a trailing dredger. FR834639 aims to perform dredging of very permeable soils with a high concentration. Therefore, the draghead is traversed by a convergent nozzle directed towards the surface. The nozzle is situated at the front of the draghead which is the leading edge of the draghead.
- US2007130807 (A1) relates to dredge heads, for use with a dredging system. US2007130807 aims to provide a dredge heads having a moveable grate member, adapted and configured to selectively extend across the opening of the dredge head, as desired by a user. The movable grate member enables a user to clear the dredge head of plugging masses or blockages without having to de-energize the dredge system pump. Also, the movable grate member enable a user to clear the dredge head of plugging masses or blockages without requiring the user to manually withdraw the plugging masses or blockages from the opening of the suction/dredge heads by using his or her hand.
- The invention aims to provide a suction head for a dredger which head enables to operate the dredge at a high sludge content.
- Another object of the invention is to improve a suction head for a dredger and partly solve at least one of the problems associated with known suction heads.
- Yet another object of the invention is to provide an alternative suction head for a dredger.
- According to a first aspect of the invention this is realized with a suction head for a dredger, the suction head comprising;
-
- an outlet for fluidly coupling the suction head with a suction tube for transport of dredge to the loading space of a floating dredger,
- a sand inlet, which in use faces a sand bed to be sucked away, for taking in a flow of dredge in the suction head, and which flow of dredge runs in a dredge flow direction at the sand inlet,
- a side inlet fluidly coupled with the sand inlet, wherein the side inlet and the outlet are arranged at opposite sides of the suction head for introducing a lateral flow from outside the suction head into the suction head locally at the sand inlet, which lateral flow runs substantially transverse relative to the dredge flow direction.
- The lateral flow associated with the side inlet causes swirl in the suction head locally at the sand inlet and therefore enhances formation of a sand/water mixture which causes a higher sand share in the mixture when the mixture enters the outlet. This is beneficial in terms of operational costs. Less water is pumped as a transport medium which saves energy and also reduces the overflow losses. The higher sand share or high sludge content is also referred to as high density dredging.
- The side inlet and the outlet being arranged at opposite sides of the suction head is beneficial in terms of effect of the side inlet because the lateral flow extends along the entire width of the suction head, which means the entire flow of dredge.
- The side inlet means that the flow which enters there through has a component which is lateral relative to the dredge flow direction at the sand inlet. The side inlet is arranged at the side of the suction head relative to its direction of travel.
- In contrast FR834639 (A) situates its nozzle at the front of the draghead which is the leading edge of the draghead. In addition, such a nozzle does not cause swirl for formation of a sand/water mixture with a higher sand share.
- Both the “side” inlet, and the lateral flow originating from outside the suction head, explain that the lateral flow is different from the flow of dredge which is the main flow.
- In an embodiment of the invention, the side inlet is transversely oriented relative to the sand inlet. This is optimal in terms of effect of the side inlet.
- In an embodiment of the invention, the side inlet, in use, faces away from the sand bed to be sucked away for taking in relative clear water. This even more makes clear that the lateral flow is different from the flow of dredge which is the main flow.
- In an embodiment of the invention, the sand inlet has a sand inlet cross sectional area and the side inlet has a side inlet cross sectional area, and the side inlet cross sectional area is relative small with respect to the sand inlet cross sectional area, preferably between 10-25% of the sand inlet cross sectional area. This makes clear that the lateral water intake flow is small compared with the flow of dredge which is the main flow.
- In an embodiment of the invention, the side inlet changes over, preferably smoothly changes over, into the sand inlet. This enables a more simple configuration and manufacture of the suction head.
- In an embodiment of the invention the sand inlet and the side inlet are integrally formed. This enables an even more simple configuration and manufacture of the suction head.
- In an embodiment of the invention, the suction head comprises a number of side inlets.
- In an embodiment of the invention, the suction head comprises a jet water device having a jet water outlet arranged for introducing a flow into a side inlet associated with the jet water outlet. This even more increases the effect of the lateral flow.
- In an embodiment of the invention the jet water outlet is fluidly coupled with the side inlet associated with the jet water outlet.
- In an embodiment of the invention, the suction head comprises a passive or active excavated layer height adjusting device. The layer adjusting device can be passive or active, wherein active means that the height of the excavated layer is a result of a set value and in case of a passive layer adjusting device, the excavated layer is a result of for example the weight of the suction head.
- According to a further aspect of the invention this is realized with a dredging vessel, like a hopper, comprising a suction head according to the invention. The dredging vessel may use an outboard submersed dredge pump which is even more beneficial for high density dredging.
- According to an even further aspect of the invention this is realized with a method for operating a suction head for a dredger, the suction head comprising;
-
- an outlet for fluidly coupling the suction head with a suction tube for transport of dredge to the loading space of a floating dredge,
- a sand inlet, which in use faces a sand bed to be sucked away, for taking in a flow of dredge in the suction head, and which flow of dredge runs in a dredge flow direction at the sand inlet,
the method comprising the step; - introducing a lateral flow, relative to the dredge flow direction, in the suction head locally at the sand inlet.
- The invention further relates to a device comprising one or more of the characterising features described in the description and/or shown in the attached drawings.
- The invention further relates to a method comprising one or more of the characterising features described in the description and/or shown in the attached drawings.
- The various aspects discussed in this patent can be combined in order to provide additional advantageous advantages.
- The invention will be further elucidated referring to an preferred embodiment shown in the drawing wherein shown in:
-
FIG. 1 in perspective view a schematic drawing of a first embodiment of a suction head according to the invention; -
FIG. 2 in perspective view a further embodiment of a suction head according to the invention; and -
FIG. 3 another perspective view of a suction head according toFIG. 2 . - The invention will further be elucidated referring to all
FIGS. 1-3 . Fig. shows asuction head 1 for a dredger. Such asuction head 1 is dragged by a dredger along thesand bed 5 to be sucked away. Thesuction head 1 comprises anoutlet 2 for fluidly coupling thesuction head 1 with asuction tube 3 for transport of dredge to the loading space of a floating dredger, which loading space and dredger are not shown. Thesuction tube 3 usually extends in the draggingdirection 24 of thesuction head 1 as is shown here. - The
suction head 1 comprises asand inlet 4. In use, thisinlet 4 in use faces asand bed 5 to be sucked away. InFIG. 1 theinlet 4 and the top face of thesand bed 5 coincide however this coinciding is not strictly required as is clear fromFIGS. 2 and 3 wherein theinlet 4 and the top face of thesand bed 5 do not coincide however theinlet 4 still faces asand bed 5 to be sucked away. Theinlet 4 takes in a flow of dredge 6 in thesuction head 1. The flow of dredge 6 runs in a dredgeflow direction 7 at thesand inlet 4 and then continuous through thesuction head 1 to theoutlet 2. - The
suction head 1 comprises aside inlet 8 which is fluidly coupled with thesand inlet 4. Thesuction head 1 has oneside inlet 8. Theside inlet 8 and theoutlet 2 are mutually arranged for introducing alateral flow 9 from outside thesuction head 1 into the suction head locally at thesand inlet 4. Thelateral flow 9 has alateral flow direction 12, at thesand inlet 4, which runs substantially transverse relative to the dredgeflow direction 7 for causing swirl in thesuction head 1 locally at thesand inlet 4. Theside inlet 8 is transversely oriented relative to thesand inlet 4 which is optimal in terms of causing swirl in thesuction head 1 locally at thesand inlet 4. During use, theside inlet 8 faces away from thesand bed 5 to be sucked away for taking in relative clear water, this clear water is however not strictly required for causing swirl in thesuction head 1 locally at thesand inlet 4. Thesand inlet 4 has a sand inlet crosssectional area 10 and theside inlet 8 has a side inlet crosssectional area 11. The side inlet crosssectional area 11 is relative small with respect to the sand inlet crosssectional area 10, here between 10-25% of the sand inlet crosssectional area 10. The sand inlet crosssectional area 10 is defined by frame members of thesuction head 1, inFIG. 2, 3 byframe members frame members 18, are an imaginary limitation. InFIG. 1 . the side inlet crosssectional area 11 is defined by sideinlet frame members FIG. 2, 3 the side inlet crosssectional area 11 is defined by sideinlet frame members frame member 18 is an imaginary limitation. InFIG. 2, 3 theside inlet 8 changes smoothly over into thesand inlet 4. In other words, theside inlet 8 and thesand inlet 4 share a commonimaginary frame member 18. Thesand inlet 4 and theside inlet 8 may be integrally formed. InFIG. 1 , theside inlet 8 and theoutlet 2 are arranged at opposite sides of thesuction head 1. - The
suction head 1 may comprise a jet water device (not shown) having a jet water outlet arranged for introducing a flow into aside inlet 8 associated with the jet water outlet. The jet water outlet may be fluidly coupled with theside inlet 8 associated with the jet water outlet. - During use of the
suction head 1, alateral flow 9 is introduced at thesand inlet 4, relative to the dredgeflow direction 7, in thesuction head 1 locally at thesand inlet 4. - It will also be obvious after the above description and drawings are included to illustrate some embodiments of the invention, and not to limit the scope of protection. Starting from this disclosure, many more embodiments will be evident to a skilled person which are within the scope of protection and the essence of this invention and which are obvious combinations of prior art techniques and the disclosure of this patent.
Claims (13)
1-12. (canceled)
13. Suction head (1) for a dredger, the suction head comprising;
an outlet (2) for fluidly coupling the suction head with a suction tube (3) for transport of dredge to the loading space of a floating dredger,
a sand inlet (4), which in use faces a sand bed (5) to be sucked away, for taking in a flow of dredge (6) in the suction head, and which flow of dredge runs in a dredge flow direction (7) at the sand inlet,
a side inlet (8) fluidly coupled with the sand inlet, wherein the side inlet and the outlet are arranged at opposite sides of the suction head for introducing a lateral flow (9) from outside the suction head into the suction head locally at the sand inlet, which lateral flow runs substantially transverse relative to the dredge flow direction.
14. Suction head according to claim 13 , wherein the side inlet is transversely oriented relative to the sand inlet.
15. Suction head according to a claim 13 , wherein the side inlet, in use, faces away from the sand bed to be sucked away for taking in relative clear water.
16. Suction head according to claim 13 , wherein the sand inlet has a sand inlet cross sectional area (10) and the side inlet has a side inlet cross sectional area (11), and the side inlet cross sectional area is relative small with respect to the sand inlet cross sectional area, preferably between 10-25% of the sand inlet cross sectional area.
17. Suction head according to claim 13 , wherein the side inlet changes over, preferably smoothly changes over, into the sand inlet.
18. Suction head according to claim 13 , wherein the sand inlet and the side inlet are integrally formed.
19. Suction head according to claim 13 , wherein the suction head comprises a number of side inlets.
20. Suction head according to claim 13 , comprising a jet water device having a jet water outlet arranged for introducing a flow into a side inlet associated with the jet water outlet.
21. Suction head according to claim 20 , wherein the jet water outlet is fluidly coupled with the side inlet associated with the jet water outlet.
22. Suction head according to claim 13 , comprising a passive or active excavated layer height adjusting device.
23. Dredging vessel, like a hopper, comprising a suction head according to claim 13 .
24. Method for operating a suction head for a dredger, the suction head comprising;
an outlet for fluidly coupling the suction head with a suction tube for transport of dredge to the loading space of a floating dredge,
a sand inlet, which in use faces a sand bed to be sucked away, for taking in a flow of dredge in the suction head, and which flow of dredge runs in a dredge flow direction at the sand inlet,
the method comprising the step;
introducing a lateral flow, relative to the dredge flow direction, in the suction head locally at the sand inlet.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL2009957A NL2009957C2 (en) | 2012-12-11 | 2012-12-11 | Suction head for a dredger. |
NL2009957 | 2012-12-11 | ||
PCT/NL2013/050884 WO2014092567A1 (en) | 2012-12-11 | 2013-12-10 | Suction head for a dredger |
Publications (1)
Publication Number | Publication Date |
---|---|
US20160186409A1 true US20160186409A1 (en) | 2016-06-30 |
Family
ID=47561773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/651,563 Abandoned US20160186409A1 (en) | 2012-12-11 | 2013-12-10 | Suction head for a dredger |
Country Status (6)
Country | Link |
---|---|
US (1) | US20160186409A1 (en) |
EP (1) | EP2931982A1 (en) |
CN (1) | CN104854279A (en) |
NL (1) | NL2009957C2 (en) |
SG (1) | SG11201504539XA (en) |
WO (1) | WO2014092567A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10030359B2 (en) * | 2013-11-04 | 2018-07-24 | Boudewijn Gabriël Van Rompay | Device and method for removing alluvial deposits from the bed of a body of water |
US10450720B2 (en) * | 2016-04-21 | 2019-10-22 | Boudewijn Gabriël Van Rompay | Device and method for removing alluvial deposits from the bed of a body of water |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2570167B (en) * | 2018-04-20 | 2020-07-29 | Rotech Group Ltd | Improvements in and relating to underwater excavation apparatus |
CN111561008B (en) * | 2020-05-21 | 2022-07-26 | 镇江市亿华系统集成有限公司 | Method for evaluating and assisting decision-making of dredger end dredging process of drag suction dredger |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US371686A (en) * | 1887-10-18 | howell | ||
US1754507A (en) * | 1924-09-26 | 1930-04-15 | Henry A Frohm | Pneumatic excavator and conveyer |
US1754746A (en) * | 1927-06-11 | 1930-04-15 | Ewig Friedrich | Suction dredger |
US4058914A (en) * | 1975-12-15 | 1977-11-22 | Kiss Sandor G | Alternate flow suction dredge |
JPS57190844A (en) * | 1981-05-18 | 1982-11-24 | Mitsubishi Heavy Ind Ltd | Drag head with contact pressure regulating tank |
US4400895A (en) * | 1981-04-15 | 1983-08-30 | Ihc Holland N.V. | Drag head for a hopper suction dredge |
JPH03248991A (en) * | 1990-02-28 | 1991-11-06 | Unyusho Kowan Gijutsu Kenkyusho | Drag head for drag type dredger |
US5450649A (en) * | 1992-09-11 | 1995-09-19 | Electrolux Outdoor Products Limited | Collection devices |
US20150143726A1 (en) * | 2013-11-26 | 2015-05-28 | Neal R. Lewis | Water body cleaner with selective sediment dredging head |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR834639A (en) * | 1937-08-02 | 1938-11-25 | Improvements to the suction pipes of suction dredgers or other devices sucking solids suspended in a liquid | |
FR1399762A (en) * | 1964-04-03 | 1965-05-21 | Grenobloise Etude Appl | Improvements to suction dredgers |
US4018483A (en) * | 1974-09-18 | 1977-04-19 | Smith D Kermit | Process and apparatus for dislodging and conveying material from a surface with a positive pressure fluid stream |
NL166514C (en) * | 1977-12-27 | 1981-08-17 | Volker Groep Nv | Towing head for a dredger. |
JPS56150258U (en) * | 1980-04-11 | 1981-11-11 | ||
JPS6128635A (en) | 1984-07-19 | 1986-02-08 | Toa Harbor Works Co Ltd | Suction head device for sludge dredging work |
US5970635A (en) * | 1998-01-29 | 1999-10-26 | Wilmoth; Daryl | Jet agitation dredging system |
US7089693B2 (en) * | 2003-02-05 | 2006-08-15 | Ea Engineering Science And Technology, Inc. | Dredging method and apparatus |
US7552551B2 (en) * | 2005-12-12 | 2009-06-30 | Kohutko Richard J | Suction head for sediment dredge |
-
2012
- 2012-12-11 NL NL2009957A patent/NL2009957C2/en not_active IP Right Cessation
-
2013
- 2013-12-10 US US14/651,563 patent/US20160186409A1/en not_active Abandoned
- 2013-12-10 WO PCT/NL2013/050884 patent/WO2014092567A1/en active Application Filing
- 2013-12-10 CN CN201380064964.6A patent/CN104854279A/en active Pending
- 2013-12-10 EP EP13808269.8A patent/EP2931982A1/en not_active Withdrawn
- 2013-12-10 SG SG11201504539XA patent/SG11201504539XA/en unknown
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US371686A (en) * | 1887-10-18 | howell | ||
US1754507A (en) * | 1924-09-26 | 1930-04-15 | Henry A Frohm | Pneumatic excavator and conveyer |
US1754746A (en) * | 1927-06-11 | 1930-04-15 | Ewig Friedrich | Suction dredger |
US4058914A (en) * | 1975-12-15 | 1977-11-22 | Kiss Sandor G | Alternate flow suction dredge |
US4400895A (en) * | 1981-04-15 | 1983-08-30 | Ihc Holland N.V. | Drag head for a hopper suction dredge |
JPS57190844A (en) * | 1981-05-18 | 1982-11-24 | Mitsubishi Heavy Ind Ltd | Drag head with contact pressure regulating tank |
JPH03248991A (en) * | 1990-02-28 | 1991-11-06 | Unyusho Kowan Gijutsu Kenkyusho | Drag head for drag type dredger |
US5450649A (en) * | 1992-09-11 | 1995-09-19 | Electrolux Outdoor Products Limited | Collection devices |
US20150143726A1 (en) * | 2013-11-26 | 2015-05-28 | Neal R. Lewis | Water body cleaner with selective sediment dredging head |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10030359B2 (en) * | 2013-11-04 | 2018-07-24 | Boudewijn Gabriël Van Rompay | Device and method for removing alluvial deposits from the bed of a body of water |
US10450720B2 (en) * | 2016-04-21 | 2019-10-22 | Boudewijn Gabriël Van Rompay | Device and method for removing alluvial deposits from the bed of a body of water |
Also Published As
Publication number | Publication date |
---|---|
CN104854279A (en) | 2015-08-19 |
SG11201504539XA (en) | 2015-07-30 |
WO2014092567A1 (en) | 2014-06-19 |
EP2931982A1 (en) | 2015-10-21 |
NL2009957C2 (en) | 2014-06-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20160186409A1 (en) | Suction head for a dredger | |
CN204001012U (en) | A kind of multi-functional dredger | |
CN105887784B (en) | Poly- oil formula oil-absorbing ship | |
CN102574577B (en) | The regulating flap of streamlined body, aircraft or main wing or dorsal fin and there is the structural constituent of this streamlined body | |
CN106864682A (en) | Big waters blue-green algae and floating object automatic cleaning ship | |
CN109641636A (en) | The air lubrication systems with wave deflector for ship | |
EP3333327A1 (en) | Autonomous dredging vehicle for dredging a dam reservoir | |
KR102652752B1 (en) | Trailing suction hopper dredger with recirculation system for effluent and suction dredging method | |
CN207605361U (en) | A kind of promotion slide | |
JP2018071104A (en) | Dredging intake structure | |
CN206554039U (en) | A kind of vertical seam type fish channel structure | |
CN103430900B (en) | High-efficiency and high-oxygen fish pool | |
US20180170484A1 (en) | Boat hull | |
CN109515620A (en) | A kind of Sea Chest suction structure | |
CN209714462U (en) | It is a kind of to suppress bath vibration separator for the multiple of shield dregs processing | |
CN204120934U (en) | For the collecting box that can prevent aqueous reflux of window cleaning equipment | |
CN209323605U (en) | A kind of simple sand flushing system of river water intaking | |
CN204875909U (en) | Special suction shield head of husky operation is inhaled in seabed | |
CN204728380U (en) | Clay drag head flushing system | |
CN210367074U (en) | Energy-saving oil-water separator | |
JPH01312126A (en) | Method for transporting dredged slurry | |
CN210658514U (en) | Oil suction pipeline structure of hydraulic excavator | |
CN207758951U (en) | A kind of unmanned boat culvert system | |
JP2017017005A5 (en) | ||
CN209636749U (en) | Structure is choked water in a kind of combination of labyrinth weir |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: IHC HOLLAND IE B.V., NETHERLANDS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BIJVOET, ERWIN CORNELIS JOHANNES;VAN SPAENDONK, BRAM ADRIANUS WALTHERUS;HIGLER, ROLAND ANDRE PIETER;AND OTHERS;REEL/FRAME:036292/0550 Effective date: 20150610 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |