WO2022119450A1 - Feeding device with directional control - Google Patents

Feeding device with directional control Download PDF

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Publication number
WO2022119450A1
WO2022119450A1 PCT/NO2021/050249 NO2021050249W WO2022119450A1 WO 2022119450 A1 WO2022119450 A1 WO 2022119450A1 NO 2021050249 W NO2021050249 W NO 2021050249W WO 2022119450 A1 WO2022119450 A1 WO 2022119450A1
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WO
WIPO (PCT)
Prior art keywords
feeding device
feed
rudder
spreader
axle
Prior art date
Application number
PCT/NO2021/050249
Other languages
French (fr)
Inventor
Eirik Andersen
Sven David Lausten KNUDSEN
Original Assignee
Bluetech As
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 Bluetech As filed Critical Bluetech As
Publication of WO2022119450A1 publication Critical patent/WO2022119450A1/en

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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
    • A01K61/00—Culture of aquatic animals
    • A01K61/80—Feeding devices
    • 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

  • This invention relates to a floating feeding device.
  • the feeding device spreads feed particles on a water surface within a pen used for fish farming. More particularly the invention relates to a feeding device comprising a spreader that spreads the feed particles in one direction of throw.
  • the feeding device is adapted to throw the feed particles at a fixed angle relative to a horizontal directed water current that flows through the cage. It is especially advantageous if the direction of throw is opposite to the water current. Thereby the feed particles are distributed within a sector up streams relative to the feeding device.
  • a floating pen comprises among other things a buoyancy body and an enclosure for the fish.
  • the enclosure may be formed by a net, or the enclosure may be formed by a watertight cloth.
  • fish feed is stored in silos onboard a barge or in silos on shore.
  • the fish feed is delivered to each pen through a feed hose.
  • the feed may be delivered pneumatically through the hose by a so- called blower.
  • a fan provides the hose with flowing air that carries the feed particles.
  • the feed particles are spread in the water volume within the enclosure. This may be done by spreading the feed particles onto the water surface within the enclosure.
  • the feed particles sink trough a water column and is eaten by the fish.
  • the sinking speed is relative slow such that the fish have sufficient time to eat the feed.
  • the sinking speed of the feed particles in water corresponds to a velocity of about 1 meter per 10 second.
  • the depth within an enclosure may vary but is typically between 20 and 40 meters. Thereby, the feed particles will be available to the fish for between 200 and 400 seconds before the uneaten feed particles are out of reach to the fish.
  • Pens in sea water are influenced by currents that flow mainly in a horizontal direction through an enclosure made up of a net.
  • the current may be a tidal current which changes direction by the tides.
  • the current may also be a local current with a different direction to the tidal current.
  • the current conveys the feed particles such that the feed particles do not sink downward in a straight manner. Feed particles distributed down streams of the feeding device, will in a relative short period of time sink in a deviating manner and laterally out of the enclosure and not be available to the fish.
  • the water column within an enclosure may be stratified and the fish may avoid the uppermost layers, e.g. due to water temperature and salinity. The fish may stay at such depth that the feed particles leave the enclosure laterally above the fish.
  • Feed particles distributed up streams of the feeding device will stay within the enclosure for a relative longer time and leave the enclosure either laterally through a side wall or through a bottom.
  • the retention time of the feed particles within the enclosure is important. A long retention time increases the likelihood for the fish to capture the feed particles. When perfect, all feed particles distributed within the enclosure shall be eaten by the fish.
  • Feeding behavior of fish may be observed by one or several video cameras submerged in the enclosure. By observing the feeding behavior of the fish, it is possible to determine when the fish in the enclosure is fed to satiation for each meal. Further feeding will result in an increasing amount of uneaten feed particles which is uneconomically. Therefore, the supply of feed particles to the cage is stopped until the next meal. Best results are achieved if the video camera is directed towards a zone of interest with a certain density of feed particles. As this zone of interest change location with the direction of the water current, the video camera should be positioned dynamically according to the sinking behavior of the feed particles.
  • the invention has for its object to remedy or to reduce at least one of the drawbacks of the prior art, or at least provide a useful alternative to prior art.
  • the invention concerns a feeding device which spreads feed particles within a sector on a water surface within an enclosure.
  • the sector is less than 360°.
  • the direction of the sector viewed from the feeding device varies according to the direction of flow of the current through the enclosure.
  • the sector is determined by a direction of throw for the feed particles that flow out of the feeding device's feed spreader and the feed spreader's natural mode of spread.
  • the direction of throw is adjustable.
  • the direction of throw may be set to be opposite of the direction of flow of the current that at any time passes through the enclosure.
  • the invention concerns a feeding device that is provided with a rudder.
  • the rudder adjust itself in a passive manner to the current.
  • a transmission device transfers the position of the rudder to the feed spreader.
  • the feed spreader is pivotable connected to the feeding device and the feed spreader is adapted to be pivoted by the transmission device.
  • the orientation of the feed spreader is not influenced by the feed particles that flow out from the spreader.
  • the throw direction of the spreader may be adjusted to be opposite directed relative to the current. In this manner the invention achieves that the feed particles obtain an optimal sinking path before any uneaten feed particle leaves the enclosure.
  • the invention relates more particularly to a feeding device adapted to float on a water surface, said feeding device comprises:
  • the feeding device comprises:
  • rudder axle holder a rudder axle holder, and the rudder axle is connected to the feed spreader.
  • the rudder axle may be connected to the feed spreader via a transmission device.
  • the transmission device may comprise a connecting device between a free end portion of the rudder axle and the feed spreader.
  • the transmission device may comprise a first gear rim on the free end portion of the rudder axle and a second gear rim on the feed spreader, and the first gear rim and the second gear rim may be connected by the connecting device.
  • the connecting device may comprise a tooth belt.
  • the connecting device may comprise a chain.
  • the rudder may be oriented in a first direction, and a throw direction of feed particles from the feed spreader may have a second direction, and a horizontal angle between the first direction and the second direction may be fixed.
  • the transmission device is adapted to adjust and fix the relative orientation between the rudder and the feed spreader.
  • the fixed angle may be 180°.
  • the feeding device may comprise a suspension for a submerged camera, said suspension is connected to one of the rudder and the rudder axle.
  • the camera may be a video camera.
  • the suspension may comprise a spacer, said spacer may in a first end portion be connected to the rudder or to the rudder axle, and in a second end portion the spacer may be connected to a line that may be fastened to the submerged camera.
  • the spacer may be oriented in a direction opposite to the rudder's orientation.
  • the invention relates more particularly to a method for controlling a throw direction of feed particles from a feeding device that floats on a water surface.
  • the method comprises to: - provide a feeding device as described above; and
  • the first direction may be opposite to the second direction, /.e. a horizontal angle between the first direction and the second direction may be 180°.
  • the horizontal angle between the first direction and the second direction may deviate from 180°.
  • Fig. 1 shows in a side view a feeding device provided with a rudder according to the invention
  • FIG. 2 shows the same as figure 1 in perspective
  • Fig. 3 shows a detail of a transmission device in one embodiment
  • Fig. 4 shows in a side view the feeding device in a second embodiment
  • Fig. 5 shows the same as figure 4 in perspective.
  • the reference numeral 1 indicates a feeding device.
  • the feeding device 1 is adapted to float on a water surface 99.
  • the feeding device 1 comprises a buoyancy body 2, a raised rack 21 which is fastened to the buoyancy body 2, a tube 23 which is connected to a feed hose 25 floating on the surface 99, a pivotable feed spreader 27 which is fastened to the rack 21 at a top portion 29, and a coupling 28 between the feed spreader 27 and the tube 23.
  • the feed hose 25 is adapted to transport feed particles (not shown) from a feed storage (not shown) to the feeding device 1.
  • the feeding device 1 is positioned on a water surface 99 within a cage (not shown) for farming of fish (not shown).
  • the feed particles are carried with an air stream within the feed hose 25.
  • the tube 23 is arc shaped and guides the feed particles from the feed hose 25 to the top portion 29 of the rack 21.
  • a mouth portion of the tube 23 is located at a center of the feeding device 1.
  • the feed particles flow substantially vertical from the tube 23 at the top portion 29.
  • the coupling 28 connects the tube 23 with the feed spreader 27 in such a manner that the feed spreader 27 is pivotable relative to the tube 23. Feed particles that flow from the tube 23 continue through the coupling 28 and further to the feed spreader 27.
  • the feed spreader 27 spreads the feed particles in a sector outward from the feed spreader 27 and at varying distances from the feed spreader 27.
  • a throw direction 270 of the feed particles is oriented at the middle of the sector. The spread of the feed particles depends on the velocity and a hit angle for each individual particle towards a surface (not shown) in the feed spreader 27.
  • the feeding device 1 comprises a rudder 3.
  • the rudder 3 is fastened to the rack 21 via a rudder axle 31 which is connected to a rudder axel holder 33.
  • the rudder axle 31 is supported by stays 35 which are shown fastened to the rack 21 and the rudder axel holder 33.
  • the rudder axel holder 33 is shown located at the top portion 29.
  • the rudder 3 is influenced by a water current 90 such that the rudder 3 is oriented in a first direction 51 determined by the direction of the water current 90.
  • the rudder axle 31 forms a free end portion 39.
  • a transmission device 4 is positioned at the end portion 39.
  • the transmission device 4 connects the rudder axle 31 with the feed spreader 27.
  • the throw direction 270 points in a second direction 52.
  • the transmission direction is adapted to that the first direction 51 and the second direction 52 is oriented with a fixed horizontal angle between them. In the figures is shown a fixed angle of 180°. I.e., the feed spreader's 27 throw direction 270 in the figures is opposite to the direction of the water current 90. This is beneficial as the feeding device 1 at any time will spread the feed particles up streams relative to the feeding device 1. Thereby an optimal residence time is achieved for the feed particles within the enclosure before any uneaten feed particle is carried away by the water current 90.
  • the transmission device 4 may comprise a first gear rim 41 on the rudder axles 31 free end portion 39, and a second gear rim 42 on the feed spreader 27 as shown in figure 3.
  • the first gear rim 41 and the second gear rim 42 may be provided with an equal number of sprockets 43.
  • the first gear rim 41 and the second gear rim 42 is connected by a connecting device 45.
  • the connecting device 45 may comprise a tooth belt 46.
  • the connecting device 45 may comprise a chain (not shown).
  • the feeding device 1 is provided with a submerged camera 6.
  • the camera 6 and the camera's s 6 is known in the art and will not be described further.
  • the camera 6 is connected to the rudder 3 by a suspension 61.
  • the suspension 61 comprises a spacer 63 which at a first end portion 60 is connected to the rudder 3.
  • the spacer 63 is oriented substantially horizontal and in an opposite direction to the rudder 3.
  • the spacer 63 is at an opposite second end portion 69 provided with a line 65 that connects the camera 6 to the spacer 63.
  • the spacer 63 may be connected to the rudder axle 31 (not shown).
  • the length of the line 65 is adjustable.
  • the suspension 61 increases the likelihood that the camera 6 is directed towards a zone where the feed particles are distributed in the water column. Thereby the feeding behavior of the fish may be observed.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Zoology (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Underground Or Underwater Handling Of Building Materials (AREA)

Abstract

A feeding device (1) adapted to float on a water surface (99), said feeding device (1) comprises: - a buoyancy body (2); - a raised rack (21) which is fastened to the buoyancy body (2); - a tube (23) connected to a feed hose (25), where the feed hose (25) is adapted for pneumatic conveying of feed particles to the feeding device (1); - a pivotable feed spreader (27) fastened to a top portion (29) of the rack (21); and - a coupling (28) between the feed spreader (27) and the tube (23) The feeding device further comprises: - a rudder (3); - a rudder axle (31) between the rudder (3) and the top portion (29); and - a rudder axle holder (33), and the rudder axle (31) is connected to the feed spreader (27). It is also described a method for controlling a throw direction (270) from the feeding de-vice (1).

Description

FEEDING DEVICE WITH DIRECTIONAL CONTROL
This invention relates to a floating feeding device. The feeding device spreads feed particles on a water surface within a pen used for fish farming. More particularly the invention relates to a feeding device comprising a spreader that spreads the feed particles in one direction of throw. The feeding device is adapted to throw the feed particles at a fixed angle relative to a horizontal directed water current that flows through the cage. It is especially advantageous if the direction of throw is opposite to the water current. Thereby the feed particles are distributed within a sector up streams relative to the feeding device.
Fish farming may take place in floating pens. A floating pen comprises among other things a buoyancy body and an enclosure for the fish. The enclosure may be formed by a net, or the enclosure may be formed by a watertight cloth. It is common that fish feed is stored in silos onboard a barge or in silos on shore. The fish feed is delivered to each pen through a feed hose. The feed may be delivered pneumatically through the hose by a so- called blower. A fan provides the hose with flowing air that carries the feed particles. The feed particles are spread in the water volume within the enclosure. This may be done by spreading the feed particles onto the water surface within the enclosure. The feed particles sink trough a water column and is eaten by the fish. The sinking speed is relative slow such that the fish have sufficient time to eat the feed. The sinking speed of the feed particles in water corresponds to a velocity of about 1 meter per 10 second. The depth within an enclosure may vary but is typically between 20 and 40 meters. Thereby, the feed particles will be available to the fish for between 200 and 400 seconds before the uneaten feed particles are out of reach to the fish. It is known in the art to use floating feeding devices that are positioned centrally within the enclosure. The feeding device is connected to the feed hose, and the feed particles flow out from a rotating spreader at the top of the device. Thereby the feed particles are spread outwardly on the water surface with the feeding device in the center of the spreading area.
Pens in sea water are influenced by currents that flow mainly in a horizontal direction through an enclosure made up of a net. The current may be a tidal current which changes direction by the tides. The current may also be a local current with a different direction to the tidal current. The current conveys the feed particles such that the feed particles do not sink downward in a straight manner. Feed particles distributed down streams of the feeding device, will in a relative short period of time sink in a deviating manner and laterally out of the enclosure and not be available to the fish. The water column within an enclosure may be stratified and the fish may avoid the uppermost layers, e.g. due to water temperature and salinity. The fish may stay at such depth that the feed particles leave the enclosure laterally above the fish. Feed particles distributed up streams of the feeding device, will stay within the enclosure for a relative longer time and leave the enclosure either laterally through a side wall or through a bottom. The retention time of the feed particles within the enclosure is important. A long retention time increases the likelihood for the fish to capture the feed particles. When perfect, all feed particles distributed within the enclosure shall be eaten by the fish.
Feeding behavior of fish may be observed by one or several video cameras submerged in the enclosure. By observing the feeding behavior of the fish, it is possible to determine when the fish in the enclosure is fed to satiation for each meal. Further feeding will result in an increasing amount of uneaten feed particles which is uneconomically. Therefore, the supply of feed particles to the cage is stopped until the next meal. Best results are achieved if the video camera is directed towards a zone of interest with a certain density of feed particles. As this zone of interest change location with the direction of the water current, the video camera should be positioned dynamically according to the sinking behavior of the feed particles. The invention has for its object to remedy or to reduce at least one of the drawbacks of the prior art, or at least provide a useful alternative to prior art.
The object is achieved through features, which are specified in the description below and in the claims that follow.
The invention concerns a feeding device which spreads feed particles within a sector on a water surface within an enclosure. The sector is less than 360°. The direction of the sector viewed from the feeding device varies according to the direction of flow of the current through the enclosure. The sector is determined by a direction of throw for the feed particles that flow out of the feeding device's feed spreader and the feed spreader's natural mode of spread. The direction of throw is adjustable. The direction of throw may be set to be opposite of the direction of flow of the current that at any time passes through the enclosure.
More particularly, the invention concerns a feeding device that is provided with a rudder. The rudder adjust itself in a passive manner to the current. A transmission device transfers the position of the rudder to the feed spreader. The feed spreader is pivotable connected to the feeding device and the feed spreader is adapted to be pivoted by the transmission device. The orientation of the feed spreader is not influenced by the feed particles that flow out from the spreader. The throw direction of the spreader may be adjusted to be opposite directed relative to the current. In this manner the invention achieves that the feed particles obtain an optimal sinking path before any uneaten feed particle leaves the enclosure.
The invention is defined by the independent patent claims. The dependent claims define advantageous embodiments of the invention.
In a first aspect the invention relates more particularly to a feeding device adapted to float on a water surface, said feeding device comprises:
- a buoyancy body;
- a raised rack which is fastened to the buoyancy body;
- a tube connected to a feed hose, where the feed hose is adapted for pneumatic convey- i ng of feed particles to the feeding device;
- a pivotable feed spreader fastened to a top portion of the rack; and
- a coupling between the feed spreader and the tube.
In addition, the feeding device comprises:
- a rudder;
- a rudder axle between the rudder and the top portion; and
- a rudder axle holder, and the rudder axle is connected to the feed spreader.
The rudder axle may be connected to the feed spreader via a transmission device. The transmission device may comprise a connecting device between a free end portion of the rudder axle and the feed spreader. The transmission device may comprise a first gear rim on the free end portion of the rudder axle and a second gear rim on the feed spreader, and the first gear rim and the second gear rim may be connected by the connecting device. The connecting device may comprise a tooth belt. The connecting device may comprise a chain.
The rudder may be oriented in a first direction, and a throw direction of feed particles from the feed spreader may have a second direction, and a horizontal angle between the first direction and the second direction may be fixed. The transmission device is adapted to adjust and fix the relative orientation between the rudder and the feed spreader. The fixed angle may be 180°.
The feeding device may comprise a suspension for a submerged camera, said suspension is connected to one of the rudder and the rudder axle. The camera may be a video camera. The suspension may comprise a spacer, said spacer may in a first end portion be connected to the rudder or to the rudder axle, and in a second end portion the spacer may be connected to a line that may be fastened to the submerged camera. The spacer may be oriented in a direction opposite to the rudder's orientation.
In a second aspect the invention relates more particularly to a method for controlling a throw direction of feed particles from a feeding device that floats on a water surface. The method comprises to: - provide a feeding device as described above; and
- connect the rudder axle with the feed spreader such that the rudder is oriented in a first direction and the throw direction is oriented in a second direction.
The first direction may be opposite to the second direction, /.e. a horizontal angle between the first direction and the second direction may be 180°. The horizontal angle between the first direction and the second direction may deviate from 180°.
In the following is described examples of preferred embodiments illustrated in the accompanying drawings, wherein:
Fig. 1 shows in a side view a feeding device provided with a rudder according to the invention;
Fig. 2 shows the same as figure 1 in perspective;
Fig. 3 shows a detail of a transmission device in one embodiment;
Fig. 4 shows in a side view the feeding device in a second embodiment; and
Fig. 5 shows the same as figure 4 in perspective.
In the drawings, the reference numeral 1 indicates a feeding device. The feeding device 1 is adapted to float on a water surface 99. The feeding device 1 comprises a buoyancy body 2, a raised rack 21 which is fastened to the buoyancy body 2, a tube 23 which is connected to a feed hose 25 floating on the surface 99, a pivotable feed spreader 27 which is fastened to the rack 21 at a top portion 29, and a coupling 28 between the feed spreader 27 and the tube 23.
The feed hose 25 is adapted to transport feed particles (not shown) from a feed storage (not shown) to the feeding device 1. The feeding device 1 is positioned on a water surface 99 within a cage (not shown) for farming of fish (not shown). The feed particles are carried with an air stream within the feed hose 25.
The tube 23 is arc shaped and guides the feed particles from the feed hose 25 to the top portion 29 of the rack 21. A mouth portion of the tube 23 is located at a center of the feeding device 1. The feed particles flow substantially vertical from the tube 23 at the top portion 29.
The coupling 28 connects the tube 23 with the feed spreader 27 in such a manner that the feed spreader 27 is pivotable relative to the tube 23. Feed particles that flow from the tube 23 continue through the coupling 28 and further to the feed spreader 27. The feed spreader 27 spreads the feed particles in a sector outward from the feed spreader 27 and at varying distances from the feed spreader 27. A throw direction 270 of the feed particles is oriented at the middle of the sector. The spread of the feed particles depends on the velocity and a hit angle for each individual particle towards a surface (not shown) in the feed spreader 27.
The feeding device 1 comprises a rudder 3. The rudder 3 is fastened to the rack 21 via a rudder axle 31 which is connected to a rudder axel holder 33. The rudder axle 31 is supported by stays 35 which are shown fastened to the rack 21 and the rudder axel holder 33. The rudder axel holder 33 is shown located at the top portion 29. The rudder 3 is influenced by a water current 90 such that the rudder 3 is oriented in a first direction 51 determined by the direction of the water current 90.
The rudder axle 31 forms a free end portion 39. A transmission device 4 is positioned at the end portion 39. The transmission device 4 connects the rudder axle 31 with the feed spreader 27. The throw direction 270 points in a second direction 52. The transmission direction is adapted to that the first direction 51 and the second direction 52 is oriented with a fixed horizontal angle between them. In the figures is shown a fixed angle of 180°. I.e., the feed spreader's 27 throw direction 270 in the figures is opposite to the direction of the water current 90. This is beneficial as the feeding device 1 at any time will spread the feed particles up streams relative to the feeding device 1. Thereby an optimal residence time is achieved for the feed particles within the enclosure before any uneaten feed particle is carried away by the water current 90.
The transmission device 4 may comprise a first gear rim 41 on the rudder axles 31 free end portion 39, and a second gear rim 42 on the feed spreader 27 as shown in figure 3. The first gear rim 41 and the second gear rim 42 may be provided with an equal number of sprockets 43. The first gear rim 41 and the second gear rim 42 is connected by a connecting device 45. The connecting device 45 may comprise a tooth belt 46. The connecting device 45 may comprise a chain (not shown).
In one embodiment the feeding device 1 is provided with a submerged camera 6. The camera 6 and the camera's s 6 is known in the art and will not be described further. The camera 6 is connected to the rudder 3 by a suspension 61. The suspension 61 comprises a spacer 63 which at a first end portion 60 is connected to the rudder 3. The spacer 63 is oriented substantially horizontal and in an opposite direction to the rudder 3. The spacer 63 is at an opposite second end portion 69 provided with a line 65 that connects the camera 6 to the spacer 63. The spacer 63 may be connected to the rudder axle 31 (not shown). The length of the line 65 is adjustable.
The suspension 61 increases the likelihood that the camera 6 is directed towards a zone where the feed particles are distributed in the water column. Thereby the feeding behavior of the fish may be observed.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. Use of the verb "comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Claims

C l a i m s
1. A feeding device (1) adapted to float on a water surface (99), said feeding device (1) comprises:
- a buoyancy body (2);
- a raised rack (21) which is fastened to the buoyancy body (2);
- a tube (23) connected to a feed hose (25), where the feed hose (25) is adapted for pneumatic conveying of feed particles to the feeding device (1);
- a pivotable feed spreader (27) fastened to a top portion (29) of the rack (21); and
- a coupling (28) between the feed spreader (27) and the tube (23), c h a r a c t e r i s e d i n that the feeding device (1) comprises:
- a rudder (3);
- a rudder axle (31) between the rudder (3) and the top portion (29); and
- a rudder axle holder (33), and the rudder axle (31) is connected to the feed spreader (27).
2. The feeding device (1) according to claim 1, wherein the rudder axle (31) is connected to the feed spreader (27) via a transmission device (4).
3. The feeding device (1) according to claim 2, wherein the transmission device (4) comprises a connecting device (45) between a free end portion (39) of the rudder axle (31) and the feed spreader (27).
4. The feeding device (1) according to claim 3, wherein the transmission device (4) comprises a first gear rim (41) on the free end portion (39) of the rudder axle (31) and a second gear rim (42) on the feed spreader (27), and the first gear rim (41) and the second gear rim (42) is connected by the connecting device (45).
5. The feeding device (1) according to claim 4, wherein the connecting device (45) comprises one of a tooth belt (46) and a chain.
6. The feeding device (1) according to any one of the preceding claims, wherein the rudder (3) is oriented in a first direction (51), and a throw direction (270) of feed particles from the feed spreader (27) has a second direction (52), and a horizontal angle between the first direction (51) and the second direction (52) is fixed. The feeding device (1) according to claim 6, wherein the fixed angle is 180°. The feeding device (1) according to any one of the preceding claims, wherein the feeding device (1) comprises a suspension (61) for a submerged camera (6), said suspension (61) is connected to one of the rudder (3) and the rudder axle (31). The feeding device (1) according to claim 8, wherein the suspension (61) comprises a spacer (63), said spacer (63) is in a first end portion (60) is connected to one of the rudder (3) and rudder axle (31), and in a second end portion (69) the spacer (63) is connected to a line (65) that is fastened to the submerged camera (6). The feeding device (1) according to claim 9, wherein the spacer (63) is oriented in a direction opposite to the rudder's (3) orientation. Method for controlling a throw direction (270) of feed particles from a feeding device (1) that floats on a water surface (99), c h a r a c t e r i s e d i n that the method comprises to:
- provide a feeding device (1) according to claim 1; and
- connect the rudder axle (31) with the feed spreader (27) such that the rudder (3) is oriented in a first direction (51) and the throw direction (270) is oriented in a second direction (52). The method according to claim 11, wherein the first direction (51) is opposite to the second direction (52).
PCT/NO2021/050249 2020-12-03 2021-12-02 Feeding device with directional control WO2022119450A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20201332 2020-12-03
NO20201332A NO346528B1 (en) 2020-12-03 2020-12-03 Feeding device with directional control

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WO2022119450A1 true WO2022119450A1 (en) 2022-06-09

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WO (1) WO2022119450A1 (en)

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CN207355248U (en) * 2017-08-29 2018-05-15 盐城工业职业技术学院 A kind of water surface floating charging device used for aquiculture
NO343976B1 (en) * 2018-01-23 2019-08-05 Norseaqua As Spreader for feed
NO20190851A1 (en) * 2019-07-05 2020-11-02

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