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WO1998058535A1 - Equipment for cleaning of net and cage - Google Patents

Equipment for cleaning of net and cage Download PDF

Info

Publication number
WO1998058535A1
WO1998058535A1 PCT/NO1997/000162 NO9700162W WO9858535A1 WO 1998058535 A1 WO1998058535 A1 WO 1998058535A1 NO 9700162 W NO9700162 W NO 9700162W WO 9858535 A1 WO9858535 A1 WO 9858535A1
Authority
WO
WIPO (PCT)
Prior art keywords
net
breeding
carriage
cleaning
breeding net
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.)
Ceased
Application number
PCT/NO1997/000162
Other languages
French (fr)
Inventor
Per Gunnar Kvenseth
Tore Johnsen
Hans Torsvik
Per Andresen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PCT/NO1997/000162 priority Critical patent/WO1998058535A1/en
Publication of WO1998058535A1 publication Critical patent/WO1998058535A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K75/00—Accessories for fishing nets; Details of fishing nets, e.g. structure
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00—Culture of aquatic animals
    • A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
    • 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
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish

Definitions

  • the present invention relates to a device for the cleaning of nets which are placed in the sea and are used as breeding nets in fish farming.
  • Nets which are used as enclosures for farmed fish will after a while be fouled with algae and other marine organisms.
  • the flow of water and oxygen to the fish decreases.
  • Growths and fouling on the nets has also consequences for the biological environment of the fish as the algae attract other parasites which are harmful to the fish and can be the cause of disease.
  • the environment surrounding the fouling causes a deterioration of the quality of life and development of the fish, further reinforced by an impairment in the free flow of oxygen-bringing water.
  • the washing and cleaning of net enclosures and breeding nets is therefore crucial for the creation of an optimal environment for fish farming. Net cleaning is today effected by lifting the fish over into other net enclosures.
  • the fouled net is taken on land and cleaned in a washing drum or vat, then rinced by flushing. Such an operation is costly and time-consuming, and usually delayed until absolutely necessary. Moreover, the fish is disturbed and stressed when being moved, an operation which further reduces the quality of life and development of the fish.
  • the existing equipment which is used for the cleaning of breeding nets under water is based on very simple methods.
  • Such equipment is either rotating brushes or nozzles attached to a bar and operated from a jetty by a fish farmer.
  • the equipment can also be a fixed device controlled by a fish farmer or a diver under water.
  • the equipment being difficult and cumbersome to handle, the cost of such methods is usually weighed against the lifting of breeding nets for subsequent regular washing. Those methods are not widely in use. None of those methods takes into account the collection of loose paniculate which falls from the nets in the cleaning process. Failure to collect such particulate further impairs the fish's environment.
  • the direct and indirect financial gains in fish farming would be greatly increased with the designing of a cleaning method which can be applied to a breeding net in place in the sea, which does not involve lifting of the fish, and which provides for the collection of waste particulate.
  • the object of the present invention is to provide a method for cleaning fish breeding nets which can be effected while the net remains under water and contains fish, said method further permitting the collection of waste material. This is achieved by providing an inner carriage on one side of the breeding net and an outer carriage on the other side of the net, each of the carriages being equipped with magnets on their upper and lower edges.
  • FIG. 1 illustrates the device of the invention in use with a fish breeding net.
  • a fish breeding net 1 is in place in the sea and may contain fish.
  • the cleaning device consists of an inner carriage 2 and an outer carriage 3, each in the form of a rectangular surface, the upper edges 4, 4' of which being somewhat curved away from the net 1 so that the carriages meet in a cleft-like funnel.
  • the lower edges 5, 5' are designed in the same manner.
  • rollers 6, 6' which are in contact with the breeding net 1 are provided in the vicinity of the upper edges 4, 4' and of the lower edges 5, 5'. This allows an upward, downward and lateral displacement of the cleaning device on the breeding net 1.
  • rollers 6, 6' and the brushes 7, 7' are mounted which mesh together and effect a brushing motion when the cleaning device is in motion relative to the breeding net.
  • the rollers 6, 6' and the brushes 7, 7' are spring-loaded, a feature which is not illustrated on the figure. If the cleaning device moves in the direction of the arrow on the figure, the rollers 6, 6' and the brushes 7, 7 will crush and hom up the growths fouling the net before the net is flushed, thus reinforcing the cleaning effect.
  • magnets 8' which attract the upper edge 4 of the outer carriage 2.
  • magnets 8' are placed correspondingly at the lower edge 5' of the outer carriage 3.
  • These magnets 8' may be electromagnets and when they are actuated the upper edge 4' of the outer carriage 3 will attract the upper edge 4 of the inner carriage 2. The same effect will take place between the lower edges 5, 5', causing the two carriages 2, 3 to be drawn together and to effect a coordinated travelling motion on the surface of the breeding net.
  • a nozzle-formed flushing tube 9 is provided in order to flush and clean the portion of the breeding net 1 situated between the carriages 2, 3 with water or any other liquid, and a suction tube 10 is also provided to suck up water and loosened material from the breeding net 1. Particulate waste is filtered away before the water is returned to the sea in a controlled manner.
  • a further embodiment consists in mounting fixed brushes in the plane of the carriages 2, 3 which face the breeding net 1, such brushes positioned in such a manner as to brush the breeding net 1 when the carriages 2, 3 are in motion.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Zoology (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

An inner carriage (2) and an outer carriage (3) provided on either side of a fish breeding net (1) and held together by magnets (8') mounted in the upper edge (4') and the lower edge (5'). Inside the edges (4, 4', 5, 5') of each carriage (2, 3), on the surfaces which face the breeding net (1), rollers (6, 6') are positioned and inward of these rotating brushes (7, 7') are mounted.

Description

EQUIPMENT FOR CLEANING OF NET AND CAGE
The present invention relates to a device for the cleaning of nets which are placed in the sea and are used as breeding nets in fish farming.
Nets which are used as enclosures for farmed fish will after a while be fouled with algae and other marine organisms. As the fouling increases, the flow of water and oxygen to the fish decreases. Growths and fouling on the nets has also consequences for the biological environment of the fish as the algae attract other parasites which are harmful to the fish and can be the cause of disease. The environment surrounding the fouling causes a deterioration of the quality of life and development of the fish, further reinforced by an impairment in the free flow of oxygen-bringing water. The washing and cleaning of net enclosures and breeding nets is therefore crucial for the creation of an optimal environment for fish farming. Net cleaning is today effected by lifting the fish over into other net enclosures. The fouled net is taken on land and cleaned in a washing drum or vat, then rinced by flushing. Such an operation is costly and time-consuming, and usually delayed until absolutely necessary. Moreover, the fish is disturbed and stressed when being moved, an operation which further reduces the quality of life and development of the fish.
The existing equipment which is used for the cleaning of breeding nets under water is based on very simple methods. Such equipment is either rotating brushes or nozzles attached to a bar and operated from a jetty by a fish farmer. The equipment can also be a fixed device controlled by a fish farmer or a diver under water. The equipment being difficult and cumbersome to handle, the cost of such methods is usually weighed against the lifting of breeding nets for subsequent regular washing. Those methods are not widely in use. None of those methods takes into account the collection of loose paniculate which falls from the nets in the cleaning process. Failure to collect such particulate further impairs the fish's environment. The direct and indirect financial gains in fish farming would be greatly increased with the designing of a cleaning method which can be applied to a breeding net in place in the sea, which does not involve lifting of the fish, and which provides for the collection of waste particulate.
The object of the present invention is to provide a method for cleaning fish breeding nets which can be effected while the net remains under water and contains fish, said method further permitting the collection of waste material. This is achieved by providing an inner carriage on one side of the breeding net and an outer carriage on the other side of the net, each of the carriages being equipped with magnets on their upper and lower edges.
Further details of the invention will appear from the description of a preferred embodiment of the invention with reference to the appertaining figure. The figure illustrates the device of the invention in use with a fish breeding net.
A fish breeding net 1 is in place in the sea and may contain fish. The cleaning device consists of an inner carriage 2 and an outer carriage 3, each in the form of a rectangular surface, the upper edges 4, 4' of which being somewhat curved away from the net 1 so that the carriages meet in a cleft-like funnel. The lower edges 5, 5' are designed in the same manner. On the surface of the inner carriage 2 and of the outer carriage 3 which faces towards the breeding net 1 , rollers 6, 6' which are in contact with the breeding net 1 are provided in the vicinity of the upper edges 4, 4' and of the lower edges 5, 5'. This allows an upward, downward and lateral displacement of the cleaning device on the breeding net 1. Just inside each roller 6, 6' rotating brushes 7, 7' are mounted which mesh together and effect a brushing motion when the cleaning device is in motion relative to the breeding net. The rollers 6, 6' and the brushes 7, 7' are spring-loaded, a feature which is not illustrated on the figure. If the cleaning device moves in the direction of the arrow on the figure, the rollers 6, 6' and the brushes 7, 7 will crush and losen up the growths fouling the net before the net is flushed, thus reinforcing the cleaning effect.
In the upper edge 4' of the inner carriage 3, just above the roller 6', are mounted magnets 8' which attract the upper edge 4 of the outer carriage 2. Similarly, magnets 8' are placed correspondingly at the lower edge 5' of the outer carriage 3. These magnets 8' may be electromagnets and when they are actuated the upper edge 4' of the outer carriage 3 will attract the upper edge 4 of the inner carriage 2. The same effect will take place between the lower edges 5, 5', causing the two carriages 2, 3 to be drawn together and to effect a coordinated travelling motion on the surface of the breeding net.
In the plane of the outer carriage 3, a nozzle-formed flushing tube 9 is provided in order to flush and clean the portion of the breeding net 1 situated between the carriages 2, 3 with water or any other liquid, and a suction tube 10 is also provided to suck up water and loosened material from the breeding net 1. Particulate waste is filtered away before the water is returned to the sea in a controlled manner. A further embodiment consists in mounting fixed brushes in the plane of the carriages 2, 3 which face the breeding net 1, such brushes positioned in such a manner as to brush the breeding net 1 when the carriages 2, 3 are in motion.

Claims

1. A device for the cleaning of breeding nets without lifting the net from the sea characterized in that on one side of the breeding net (1) an inner carriage (2) is positioned and on the other side of the breeding net (1) an outer carriage (3) is positioned having a magnet (8') provided in its upper edge (4') and lower edge (5).
2. The device of claim 1 characterized in that the upper edge (4) and the lower edge (5) of the inner carriage (2) are somewhat curved away from the breeding net (1), and a similar design is given to the outer carriage (3) so that the carriages (2,3) in the said places form a cleft-like funnel for the passage of the breeding net. 3. The device of the previous claims, characterized in that on each carriage (2,
3), on the surface facing the breeding net (1), just inward of the edges (4,4',5,5') are mounted rollers (6,6') and inward of these are positioned rotating brushes (7,7'), all of these being spring-loaded.
4. The device of the previous claims, characterized in that brushes are mounted on the surface of the carriages (2,3) facing the breeding net.
5. The device of claim ^characterized in that the magnet (8') is an electromagnet.
6. The device of claim 1, c haracterized in that on the portion of the outer carriage (3) between the rollers (6,6') a nozzle-like flushing tube (9) and a suction tube (10) are provided.
PCT/NO1997/000162 1997-06-24 1997-06-24 Equipment for cleaning of net and cage Ceased WO1998058535A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/NO1997/000162 WO1998058535A1 (en) 1997-06-24 1997-06-24 Equipment for cleaning of net and cage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NO1997/000162 WO1998058535A1 (en) 1997-06-24 1997-06-24 Equipment for cleaning of net and cage

Publications (1)

Publication Number Publication Date
WO1998058535A1 true WO1998058535A1 (en) 1998-12-30

Family

ID=19907845

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1997/000162 Ceased WO1998058535A1 (en) 1997-06-24 1997-06-24 Equipment for cleaning of net and cage

Country Status (1)

Country Link
WO (1) WO1998058535A1 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001093671A1 (en) * 2000-05-22 2001-12-13 Aspoey Bjoern Device for harvesting of and tending to shells and for cleaning of an associated shell collector in water
CN101849517A (en) * 2009-04-02 2010-10-06 敖志辉 Circular ring buoy net scraper
CN101849516A (en) * 2009-04-02 2010-10-06 敖志辉 Square floater net scraper
RU2444189C2 (en) * 2009-05-27 2012-03-10 Государственное научное учреждение ордена "Знак Почета" Научно-исследовательский институт сельского хозяйства Крайнего Севера Сибирского отделения Российской академии сельскохозяйственных наук (ГНУ НИИСХ КС СО Россельхозакадемии) Device and method for cleaning of nets
CN101869088B (en) * 2008-06-05 2012-09-05 敖志辉 Tide and wave type device for automatically washing net cage under water
WO2012142364A3 (en) * 2011-04-13 2013-01-10 Lindgren Peter B Fish cage screen and cleaning apparatus
WO2014184085A1 (en) * 2013-05-15 2014-11-20 Nv Bekaert Sa Aquaculture net with inner frame
WO2018056835A1 (en) 2016-09-23 2018-03-29 Aqua Robotics As Device for cleaning a surface of a structure, the surface being submerged in a water column
NO20161708A1 (en) * 2016-10-28 2018-04-30 Haukaas John Kristian Assembly for carrying out an operation on a net
JP2018068129A (en) * 2016-10-24 2018-05-10 中国電力株式会社 Protective equipment
CN109169468A (en) * 2018-09-18 2019-01-11 章婧 A kind of self-cleaning fish bowl
US20210059231A1 (en) * 2019-08-29 2021-03-04 Vincent George Hogan Foldable lobster net
NO345993B1 (en) * 2020-11-25 2021-12-13 Watbots As A cleaning device for cleaning a submerged net
CN114190303A (en) * 2021-12-09 2022-03-18 重庆市大足区穗源种植养殖股份合作社 Fry breeding method with high survival rate
NO20221023A1 (en) * 2022-09-27 2024-03-28 Bjoerlo Erling Andreas Device for cleaning biological growth on a fine-mesh net

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Vol. 14, No. 53, (C-683); & JP,A,01 281 024 (BRIDGESTONE CORP) 13 November 1989. *
PATENT ABSTRACTS OF JAPAN, Vol. 97, No. 05; & JP,A,09 009 818 (MITSUBISHI HEAVY IND LTD) 14 January 1997. *

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6837183B2 (en) 2000-05-22 2005-01-04 Aspoey Bjoern Device for harvesting of and tending to shells and for cleaning of an associated shell collector in water
KR100723304B1 (en) * 2000-05-22 2007-05-30 뵨 아스푀이 Shellfish harvesting, management and related shellfish net cleaning equipment in water
HRP20020865B1 (en) * 2000-05-22 2011-09-30 Aspøy Bjørn MACHINE COLLECTION AND GROWING DEVICE, AND FOR CLEANING THE FOLLOWING MUSHROOM COLLECTOR IN WATER
WO2001093671A1 (en) * 2000-05-22 2001-12-13 Aspoey Bjoern Device for harvesting of and tending to shells and for cleaning of an associated shell collector in water
CN101869088B (en) * 2008-06-05 2012-09-05 敖志辉 Tide and wave type device for automatically washing net cage under water
CN101849516B (en) * 2009-04-02 2014-04-02 敖志辉 Square floater net scraper
CN101849517A (en) * 2009-04-02 2010-10-06 敖志辉 Circular ring buoy net scraper
CN101849516A (en) * 2009-04-02 2010-10-06 敖志辉 Square floater net scraper
RU2444189C2 (en) * 2009-05-27 2012-03-10 Государственное научное учреждение ордена "Знак Почета" Научно-исследовательский институт сельского хозяйства Крайнего Севера Сибирского отделения Российской академии сельскохозяйственных наук (ГНУ НИИСХ КС СО Россельхозакадемии) Device and method for cleaning of nets
AU2012242728B2 (en) * 2011-04-13 2016-11-24 Peter B. Lindgren Fish cage screen and cleaning apparatus
US8881683B2 (en) 2011-04-13 2014-11-11 Peter B. Lindgren Fish cage screen and cleaning apparatus
WO2012142364A3 (en) * 2011-04-13 2013-01-10 Lindgren Peter B Fish cage screen and cleaning apparatus
WO2014184085A1 (en) * 2013-05-15 2014-11-20 Nv Bekaert Sa Aquaculture net with inner frame
WO2018056835A1 (en) 2016-09-23 2018-03-29 Aqua Robotics As Device for cleaning a surface of a structure, the surface being submerged in a water column
EP3515804A4 (en) * 2016-09-23 2020-12-09 Aqua Robotics AS DEVICE FOR CLEANING THE SURFACE OF A STRUCTURE WHERE THE SURFACE IS SUBMERSED IN A COLUMN OF WATER
JP2018068129A (en) * 2016-10-24 2018-05-10 中国電力株式会社 Protective equipment
EP3531829A4 (en) * 2016-10-28 2020-06-24 HB Technology AS Assembly for carrying out an operation on a net
NO343336B1 (en) * 2016-10-28 2019-02-04 Haukaas John Kristian Assembly for carrying out an operation on a net
NO20161708A1 (en) * 2016-10-28 2018-04-30 Haukaas John Kristian Assembly for carrying out an operation on a net
CN109169468A (en) * 2018-09-18 2019-01-11 章婧 A kind of self-cleaning fish bowl
CN109169468B (en) * 2018-09-18 2021-09-28 杭州杉芽科技有限公司 Self-cleaning fish tank
US20210059231A1 (en) * 2019-08-29 2021-03-04 Vincent George Hogan Foldable lobster net
US11540497B2 (en) * 2019-08-29 2023-01-03 Vincent George Hogan Foldable lobster net
NO345993B1 (en) * 2020-11-25 2021-12-13 Watbots As A cleaning device for cleaning a submerged net
CN114190303A (en) * 2021-12-09 2022-03-18 重庆市大足区穗源种植养殖股份合作社 Fry breeding method with high survival rate
CN114190303B (en) * 2021-12-09 2023-03-24 重庆市大足区穗源种植养殖股份合作社 Fry breeding method with high survival rate
NO20221023A1 (en) * 2022-09-27 2024-03-28 Bjoerlo Erling Andreas Device for cleaning biological growth on a fine-mesh net

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