US3829160A - Hydraulic dredging apparatus - Google Patents

Hydraulic dredging apparatus Download PDF

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Publication number
US3829160A
US3829160A US00371588A US37158873A US3829160A US 3829160 A US3829160 A US 3829160A US 00371588 A US00371588 A US 00371588A US 37158873 A US37158873 A US 37158873A US 3829160 A US3829160 A US 3829160A
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US
United States
Prior art keywords
nodules
arrangement according
clay
wheels
hydraulic
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 - Lifetime
Application number
US00371588A
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English (en)
Inventor
E Condolios
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cegelec SA
Original Assignee
Cegelec SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cegelec SA filed Critical Cegelec SA
Application granted granted Critical
Publication of US3829160A publication Critical patent/US3829160A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel
    • 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
    • E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel
    • E02F3/9225—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel with rotating cutting elements
    • E02F3/9237—Suction wheels with axis of rotation in transverse direction of the longitudinal axis of the suction pipe
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C50/00—Obtaining minerals from underwater, not otherwise provided for

Definitions

  • FIGB 1 HYDRAULIC DREDGING APPARATUS Deposits of nodules of manganese and other minerals are to be found on sea beds at a great depth.
  • nodules are often deposited on argilaceous beds and when hydraulic dredging of these beds is effected in order tocollect the nodules, great quantities of clay are brought up at the same time.
  • the present invention has for its object an improved dredging bucket for such dredging, having the function of collecting the nodules on the sea bed with a variable percentage of clay according to the bottom, of washing the said nodules and of putting them in a hopper in which they may be hydraulically brought to the surface.
  • the dredging bucket according to the invention is es sentially characterized in that it is constituted by a main frame on skids enabling it to slide on the sea bed, with a device for scraping the said bottom, means for bringing the scraped up material into a current of washing water produced by the forward movement of the dredging bucket towards two lateral wheels having perforated vanes driven in a rotating movement by hydraulic or electric motors, ensuring the washing of the nodules and the removing of the clay, these wheels comprising helical scrapers placed at the base of the vanes, bringing the nodules free from clay towards a central hopper comprising an inlet for sea water, whence they are drawn with the sea water by hydraulic tubes provided with pumping systems and brought to the surface.
  • the number of skids and their surface area, as well as the apparent weight of the dredging bucket fitted with floats, will be calculated as a function of the state on the surface of the bed, so as to ensure a determined digging in the dredging bucket in the layer of materials to be dredged.
  • FIG. 1 is an elevational view of a dredging bucket according to the invention
  • FIG. 2 is a plan view of the dredging bucket
  • FIG. 3 is a partial vertical section view of the dredging bucket in the plane IIIIII of FIG. 4;
  • FIG. 4 is a vertical section view of the dredging bucket in the plane IVIV of FIG. 3.
  • FIGS. 1, 2, 3, and 4 show a dredging bucket according to the invention, drawn by a cable 1 on the sea bed, by means of skids 2 and comprising a metallic frame 3, a sea bed scraper blade 4, two lateral wheels having perforated vanes 5 driven in a rotating movement by hydraulic motors 6 fed by pressurized water tubes 7, or electric motors.
  • the frame is provided with a plate 11 on the upstream side of the vaned wheel and above it.
  • the perforated vanes 5 comprise orifices having small dimensions, smaller than those of the nodules and are provided with helical scrapers 8 at their base and a central hopper 9 is placed between the two wheels.
  • the scrapers 8 may be seen more particularly in FIG. 4.
  • a hydraulic lifting tube 10 makes it possible to lift the dredged materials.
  • the lifting tube 10 comprises, at its lower part, a discharge valve 15 controlled by a jack 16 which enables the nodules to be emptied from the tube, in order to avoid causing jamming if the pumping stops.
  • An improved dredging bucket for the hydraulic dredging of nodules of ores on the sea bed and the removing of clay dredged with said. nodules comprising skids, a central hopper, a main frame mounted on said skids and supporting said central hopper enabling it to slide on the sea bed, scraping means supported by said main frame for scraping the sea bed, means for bringing the scraped up material including nodules and clay into a current ofwashing water produced by the forward movement of the main frame, two lateral wheels having perforated vanes mounted behind said scraping means for ensuring the washing of the nodules and the separating of clay therefrom, means for driving said wheels in a rotating movement, helical scraper means placed at the base of said vanes for bringing the nodules which become free from the clay towards said central hopper including an inlet for sea water, and hydraulic tube means for drawing said nodules to the surface with the sea water.
  • said hydraulic tube means includes pumping means for pumping sea water through said central hopper to the surface.
  • said scraping means comprises a blade transverse to said skids and angled to said sea bed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Pusher Or Impeller Conveyors (AREA)
  • Underground Or Underwater Handling Of Building Materials (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
US00371588A 1972-06-20 1973-06-20 Hydraulic dredging apparatus Expired - Lifetime US3829160A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7222119A FR2189587B1 (ja) 1972-06-20 1972-06-20

Publications (1)

Publication Number Publication Date
US3829160A true US3829160A (en) 1974-08-13

Family

ID=9100443

Family Applications (1)

Application Number Title Priority Date Filing Date
US00371588A Expired - Lifetime US3829160A (en) 1972-06-20 1973-06-20 Hydraulic dredging apparatus

Country Status (11)

Country Link
US (1) US3829160A (ja)
JP (1) JPS5531857B2 (ja)
AU (1) AU475514B2 (ja)
BE (1) BE800753A (ja)
CA (1) CA979027A (ja)
DE (1) DE2331487C2 (ja)
ES (1) ES416127A1 (ja)
FR (1) FR2189587B1 (ja)
GB (1) GB1425414A (ja)
NL (1) NL176800C (ja)
ZA (1) ZA733888B (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972566A (en) * 1975-03-04 1976-08-03 The International Nickel Company, Inc. Solids concentrator
US4040667A (en) * 1974-08-16 1977-08-09 Hans Tax Apparatus for recovering particulate material from the sea bottom
US4346937A (en) * 1980-06-02 1982-08-31 Deepsea Ventures, Inc. Dredging apparatus including suction nozzles
WO1988003197A1 (en) * 1986-10-28 1988-05-05 Wakefield Anthony W Cutting device
EP2682528A3 (en) * 2012-07-06 2014-02-19 Baggerwerken Decloedt en Zoon Device and method for dredging bed material under water
US9951496B2 (en) * 2011-03-18 2018-04-24 Susanne F. Vaughan Systems and methods for harvesting natural gas from underwater clathrate hydrate deposits

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988843A (en) * 1974-12-11 1976-11-02 The International Nickel Company, Inc. Mining transition chamber
US4232903A (en) * 1978-12-28 1980-11-11 Lockheed Missiles & Space Co., Inc. Ocean mining system and process
DE3429202C1 (de) * 1984-08-08 1986-01-09 Preussag Ag, 3000 Hannover Und 1000 Berlin Vorrichtung zum Aufnehmen von Manganknollen oder dergleichen vom Meeresboden

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2015894A1 (de) * 1970-04-03 1971-10-14 Deutsche Babcock & Wilcox Ag, 4200 Oberhausen Unterwasserschurfgerat

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040667A (en) * 1974-08-16 1977-08-09 Hans Tax Apparatus for recovering particulate material from the sea bottom
US3972566A (en) * 1975-03-04 1976-08-03 The International Nickel Company, Inc. Solids concentrator
DE2608636A1 (de) * 1975-03-04 1976-09-23 Int Nickel Ltd Vorrichtung zum sammeln und foerdern von meeresmineralien
US4346937A (en) * 1980-06-02 1982-08-31 Deepsea Ventures, Inc. Dredging apparatus including suction nozzles
WO1988003197A1 (en) * 1986-10-28 1988-05-05 Wakefield Anthony W Cutting device
US9951496B2 (en) * 2011-03-18 2018-04-24 Susanne F. Vaughan Systems and methods for harvesting natural gas from underwater clathrate hydrate deposits
EP2682528A3 (en) * 2012-07-06 2014-02-19 Baggerwerken Decloedt en Zoon Device and method for dredging bed material under water

Also Published As

Publication number Publication date
JPS5531857B2 (ja) 1980-08-21
AU5687573A (en) 1974-12-19
ZA733888B (en) 1974-09-25
NL176800B (nl) 1985-01-02
GB1425414A (en) 1976-02-18
FR2189587B1 (ja) 1974-10-25
DE2331487A1 (de) 1974-01-10
NL176800C (nl) 1985-06-03
NL7308478A (ja) 1973-12-27
FR2189587A1 (ja) 1974-01-25
DE2331487C2 (de) 1982-12-30
ES416127A1 (es) 1976-03-01
AU475514B2 (en) 1976-08-26
JPS4985835A (ja) 1974-08-16
BE800753A (fr) 1973-12-12
CA979027A (en) 1975-12-02

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