EP0012458A1 - Vorrichtung zum Zerkleinern und Abführen von Erde, insbesondere unter Wasser - Google Patents

Vorrichtung zum Zerkleinern und Abführen von Erde, insbesondere unter Wasser Download PDF

Info

Publication number
EP0012458A1
EP0012458A1 EP79200674A EP79200674A EP0012458A1 EP 0012458 A1 EP0012458 A1 EP 0012458A1 EP 79200674 A EP79200674 A EP 79200674A EP 79200674 A EP79200674 A EP 79200674A EP 0012458 A1 EP0012458 A1 EP 0012458A1
Authority
EP
European Patent Office
Prior art keywords
housing
compartments
suction
rotor
compartment
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.)
Granted
Application number
EP79200674A
Other languages
English (en)
French (fr)
Other versions
EP0012458B1 (de
Inventor
Nicolaas Gerardus Konijn
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.)
Konijn Machinebouw BV
Original Assignee
Konijn Machinebouw BV
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 Konijn Machinebouw BV filed Critical Konijn Machinebouw BV
Priority to AT79200674T priority Critical patent/ATE1109T1/de
Publication of EP0012458A1 publication Critical patent/EP0012458A1/de
Application granted granted Critical
Publication of EP0012458B1 publication Critical patent/EP0012458B1/de
Expired legal-status Critical Current

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
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
    • E02F3/9268—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with rotating cutting elements
    • E02F3/9275—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with rotating cutting elements with axis of rotation parallel to longitudinal axis of the suction pipe

Definitions

  • the invention relates to an apparatus for disintegrating and removing earth, in particular under water, comprising a housing, in which at least one compartment is formed, that can be connected to the suction side of a pump, which compartment is open on the underside, and accommodates a rotor which comprises disintegrating means, the rotary shaft of said rotor being supported in the housing and being coupled to a drive means which is mounted on the housing, said rotary shaft being at least substantially perpendicular to the plane through the lower edge of the compartment, 'while the rotor protrudes beyond this plane.
  • the apparatus according to the invention is characterized in that the rotor is equipped with a number of downwardly projecting knives which have different angular positions and which are arranged in groups that are approximately equidistant from the rotary shaft.
  • the knives are capable of exercising a very powerful cutting action upon the earth layer to be removed, so that the earth is disintegrated and discharged.
  • a satisfactory distribution of the forces which act upon the rotor is attained as a result of the particular arrangement of the knives in the groups.
  • this rotor despite the great magnitude of the forces which develop, nevertheless has a long service life. Furthermore, its operation is marked by the absence of vibrations.
  • a preferred embodiment of the apparatus according to the invention is characterized in that the rotor is provided with a central plate member lying in a plane extending at right angles to the rotary shaft, said central plate member comprising a plurality of blades each having a concave and a convex side edge, said convex side edge being the leading edge, when viewed in the direction of rotation of the rotor.
  • Each of the blades may carry a number of said knives, while said blades connect to obliquely arranged vanes that are positioned farther outwardly, near the wall of the housing, which vanes extend inside the compartments to the vicinity of the upper wall of the housing and terminate in the outermost knives.
  • the housing may comprise two compartments that are arranged side by side, while the rotors that are housed in these compartments are driven in opposite directions, a suction chamber being provided between the compartments which is connected to the two compartments as well as to the suction side of the pump.
  • This suction chamber may connect to a pipe which debouches below the water level, a valve being inserted in the pipe which is normally closed but which opens when the vacuum in the suction chamber becomes too high.
  • the compartments may have a substantially conical shape and increase in diameter towards the open side, a suction channel being formed in each compartment near the suction chamber, said suction channel being defined on one side by the wall of the housing and opening at one end into the relative compartment, while the opposite end of the suction channel is in open communication with the suction chamber.
  • the ratio of the developed length of the lower edge of the housing to the amount of earth-and-water mixture to be removed by suction of the pump may be selected in such a way that the rate of passage of the earth-and-water mixture is so low as to prevent any air pocket from being attracted. It thus becomes possible to perform suction operations under shallow water as well.
  • the drawing illustrates an embodiment of an apparatus for loosening, crushing and removing earth layers, in particular under water.
  • This apparatus comprises a housing 1, inside which two compartments 2,3 are formed side by side. These compartments 2,3 have a substantially conical shape and increase in diameter towards the underside.
  • Each compartment 2,3 is open on the underside and accommodates a rotor 4.
  • the rotary shaft 5 of this rotor 4 is supported in the housing 1 and is coupled to a driving means (not shown) that is mounted on the housing l.
  • Each rotary shaft 5 is substantially perpendicular to the plane through the lower edge 6 of the compartment 2,3.
  • Each of the two rotors 4 is integrally formed from sheet metal and is equipped with a plurality of downwardly projecting knives 7,8,9,10 which have different angular positions and which are arranged in groups that are substantially equidistant from the rotary shaft 5.
  • the knives 10 protrude beyond the plane through the lower edge 6 of their compartment 2,3.
  • Each rotor 4 is provided with a central plate member 11 lying in a plane extending at right angles to the rotary shaft 5 and comprising three blades 12.
  • Each blade 12 has a concave side edge 13 and a convex side edge 14. This convex side edge 14 is the leading edge, when viewed in the direction of rotation of the rotor 4.
  • These blades 12 carry the knives 7, 8, 9.
  • the blades 12 connect to obliquely arranged vanes 15 that are integral with the central plate 11 and that are positioned farther outwardly near the wall of the housing. These vanes 15 extend to the vicinity of the upper wall 16 of the housing 1 and terminate in the outermost knives 10.
  • the vanes 15 lie at least in part on a conical surface which is substantially parallel to the conical wall of their compartment 2 or 3.
  • This suction chamber 17 further connects to a stub 18 which is connected to the upper wall 16 of the housing 1.
  • This stub 18 is connected by a suction pipe (not shown) to the suction side of a pump.
  • a suction channel 19 is formed in each compartment 2, 3 near the suction chamber 17.
  • the suction opening 20 of this suction channel is located in the compartment 2,3 and the opposite end of this suction channel is in open communication with the suction chamber 17.
  • the suction channels 19 are defined on one side by the wall of their compartment 2,3.
  • the suction chamber 17 is likewise connected to a pipe 21 which debouches below the water level.
  • a valve 22 is inserted in this pipe, which valve is normally closed but opens when the pressure in the suction chamber 17 falls below a given value.
  • the apparatus may be suspended by its suction pipe from the ladder of a boat on which the pump is supported, or from the jib of a hydraulic crane.
  • This crane may be supported on a crane boat or on a tractor, depending on the depth of the water and on the circumstances in which the work is to be carried out.
  • the two rotors 4 When the apparatus is in operation, the two rotors 4 are driven in opposite directions in their compartments 2,3, in such a way that the convex side edge 14 of the blades 12 is the leading edge.
  • the knives 7,8,9,10 powerfully attack the underlying earth layer which is to be removed.
  • the disposition and arrangement of these knives 7-10 make them particularly suitable for applying an efficient cutting action to this earth layer, even if this layer is hard and/or cohesive.
  • the earth is loosened by the knives 7-10 which are twisted relatively to each other and which are arranged in groups that are equidistant from the rotary shaft 5, whereupon this earth enters into the compartments 2,3 and is supplied under the action of the particular shape of the blades 12 to the suction channels 19.
  • the earth is discharged through the suction chamber 17, the stub 18, the suction pipe and the pump. If the pressure in the compartments 2, 3 becomes too low, the valve 22 opens, thus allowing water to flow through the pipe 21 into the suction chamber 17 and through the suction channels 19 into the compartments 2,3. This prevents the possibility of the apparatus becoming drawn too far into the earth under the action of suction, which would make it impossible to control the apparatus.
  • the lower edge 6 of the housing 1 is bent inwardly between the compartments 2, 3 on one side. This furthers a uniform forward motion of the housing 1 along the earth layer, without being impeded by any subsisting earth ridge.
  • the ratio of the developed length of the lower edge 6 of the housing 1 to the amount of earth-and-water mixture to be removed by suction of the pump is established in such a way that the rate of passage of the earth-and-water mixture is so low as to prevent any air pocket from being attracted. This also allows suction operations to be performed under shallow water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Physical Water Treatments (AREA)
EP79200674A 1978-12-06 1979-11-16 Vorrichtung zum Zerkleinern und Abführen von Erde, insbesondere unter Wasser Expired EP0012458B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79200674T ATE1109T1 (de) 1978-12-06 1979-11-16 Vorrichtung zum zerkleinern und abfuehren von erde, insbesondere unter wasser.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7811900 1978-12-06
NLAANVRAGE7811900,A NL169765C (nl) 1978-12-06 1978-12-06 Inrichting voor het losmaken en afvoeren van grond, in het bijzonder onder water.

Publications (2)

Publication Number Publication Date
EP0012458A1 true EP0012458A1 (de) 1980-06-25
EP0012458B1 EP0012458B1 (de) 1982-05-26

Family

ID=19832013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200674A Expired EP0012458B1 (de) 1978-12-06 1979-11-16 Vorrichtung zum Zerkleinern und Abführen von Erde, insbesondere unter Wasser

Country Status (4)

Country Link
EP (1) EP0012458B1 (de)
AT (1) ATE1109T1 (de)
DE (1) DE2962967D1 (de)
NL (1) NL169765C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552680A1 (fr) * 1983-09-29 1985-04-05 Komatsu Mfg Co Ltd Dispositif pour broyer les pierres, a utiliser dans un engin excavateur pour la pose de canalisations en sous-sol
EP0328198A1 (de) * 1988-02-09 1989-08-16 Rapid Multipurpose (Uk) Wing Dredging Co Ltd Bagger
EP0712963A3 (de) * 1994-11-21 1996-05-29 Ballast Nedam Baggeren B.V. Vorrichtung und Verfahren zum Wegnehmen von Baggergut

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1063985B (de) * 1955-03-24 1959-08-20 Wilhelm Riedemann Saugbagger
US3148464A (en) * 1962-06-07 1964-09-15 Kenneth M Jones Dredging apparatus
DE1484659A1 (de) * 1962-02-05 1969-01-16 Entpr S Decloedt & Fils Saugbagger
FR2031435A7 (de) * 1969-02-14 1970-11-20 Moeller Johannes
GB1430182A (en) * 1973-03-13 1976-03-31 Araoka T Apparatus for digging an underwater hole
US4052801A (en) * 1976-04-28 1977-10-11 Smith Leward N Dredging system and methods of dredging
FR2355961A1 (fr) * 1976-06-23 1978-01-20 Konijn Machinebouw Nv Appareil a desagreger et a evacuer des couches de terre notamment dans l'eau

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1063985B (de) * 1955-03-24 1959-08-20 Wilhelm Riedemann Saugbagger
DE1484659A1 (de) * 1962-02-05 1969-01-16 Entpr S Decloedt & Fils Saugbagger
US3148464A (en) * 1962-06-07 1964-09-15 Kenneth M Jones Dredging apparatus
FR2031435A7 (de) * 1969-02-14 1970-11-20 Moeller Johannes
GB1430182A (en) * 1973-03-13 1976-03-31 Araoka T Apparatus for digging an underwater hole
US4052801A (en) * 1976-04-28 1977-10-11 Smith Leward N Dredging system and methods of dredging
FR2355961A1 (fr) * 1976-06-23 1978-01-20 Konijn Machinebouw Nv Appareil a desagreger et a evacuer des couches de terre notamment dans l'eau

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552680A1 (fr) * 1983-09-29 1985-04-05 Komatsu Mfg Co Ltd Dispositif pour broyer les pierres, a utiliser dans un engin excavateur pour la pose de canalisations en sous-sol
EP0328198A1 (de) * 1988-02-09 1989-08-16 Rapid Multipurpose (Uk) Wing Dredging Co Ltd Bagger
WO1989007691A1 (en) * 1988-02-09 1989-08-24 Rapid Multipurpose (Uk) Wing Dredging Co Ltd. Improvements relating to dredgers
EP0712963A3 (de) * 1994-11-21 1996-05-29 Ballast Nedam Baggeren B.V. Vorrichtung und Verfahren zum Wegnehmen von Baggergut
NL9401939A (nl) * 1994-11-21 1996-07-01 Ballast Nedam Baggeren Bv Inrichting voor het verwijderen van baggermateriaal, alsmede werkwijze voor het bedrijven daarvan.

Also Published As

Publication number Publication date
NL7811900A (nl) 1980-06-10
EP0012458B1 (de) 1982-05-26
NL169765B (nl) 1982-03-16
ATE1109T1 (de) 1982-06-15
DE2962967D1 (en) 1982-07-15
NL169765C (nl) 1982-08-16

Similar Documents

Publication Publication Date Title
US3962803A (en) Dredging head
EP1851386B1 (de) Schneidkopf zum ausbaggern von erde und verfahren zum ausbaggern mittels dieses schneidkopfs
US20080230966A1 (en) Scrap melter and impeller therefore
CA2198524A1 (en) Blowing and suction device, more specifically a vacuum device for picking up and shredding leaves and similar material
JP3184685B2 (ja) 気体を液体またはスラリ中に分散する方法および装置
JPS5828396B2 (ja) パルプ機械から不純物を除去する方法及び装置
EP3271517B1 (de) Baggervorrichtung und druckverfahren
EP0012458A1 (de) Vorrichtung zum Zerkleinern und Abführen von Erde, insbesondere unter Wasser
EP0019979A1 (de) Schneidkopf für einen Saugbagger
CA1066437A (en) Flotation cell
US3584800A (en) Waste pulping machine with shear members
CN1486220A (zh) 浮选机
US4163330A (en) Dredge cutter head having a volute compartment
US4844687A (en) Selfpriming centrifugal pump
US2911020A (en) Log-peeling machine having scraper tools provided with bark-deflecting wings
US4646449A (en) Bucket wheel dredging device
JP2004514578A (ja) 水中造粒機のための分離装置
CN210172111U (zh) 一种刨冰式定量供料干冰机
US5170576A (en) Cutting wheel arrangement for suction dredge
CA1266280A (en) Cutting wheel arrangement for suction dredge
SU684161A1 (ru) Пульпоподъемное устройство
JP3331590B2 (ja) ウォータージェット推進船における吸込塵芥の破砕装置
US2200410A (en) Paper making machinery
RU2046889C1 (ru) Земснаряд
CN217267737U (zh) 污泥清理装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT SE

17P Request for examination filed
ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT SE

REF Corresponds to:

Ref document number: 1109

Country of ref document: AT

Date of ref document: 19820615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 2962967

Country of ref document: DE

Date of ref document: 19820715

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19821122

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19821129

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19821231

Year of fee payment: 4

Ref country code: CH

Payment date: 19821231

Year of fee payment: 4

Ref country code: BE

Payment date: 19821231

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19830114

Year of fee payment: 4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19831116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19831117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19831130

Ref country code: BE

Effective date: 19831130

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19840731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19840801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881118

ITTA It: last paid annual fee
EUG Se: european patent has lapsed

Ref document number: 79200674.4

Effective date: 19850607

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT