WO2002056676A1 - Device and method for feeding of fish - Google Patents
Device and method for feeding of fish Download PDFInfo
- Publication number
- WO2002056676A1 WO2002056676A1 PCT/NO2001/000375 NO0100375W WO02056676A1 WO 2002056676 A1 WO2002056676 A1 WO 2002056676A1 NO 0100375 W NO0100375 W NO 0100375W WO 02056676 A1 WO02056676 A1 WO 02056676A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- feed
- collecting means
- recycling
- riser
- ejector
- Prior art date
Links
- 241000251468 Actinopterygii Species 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000004064 recycling Methods 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 230000007704 transition Effects 0.000 claims description 19
- 239000008188 pellet Substances 0.000 claims description 7
- 230000036528 appetite Effects 0.000 claims description 5
- 235000019789 appetite Nutrition 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 2
- 230000009182 swimming Effects 0.000 claims description 2
- 235000019688 fish Nutrition 0.000 description 13
- 241000269980 Pleuronectidae Species 0.000 description 4
- 238000009360 aquaculture Methods 0.000 description 4
- 244000144974 aquaculture Species 0.000 description 4
- 241000972773 Aulopiformes Species 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000019515 salmon Nutrition 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000157468 Reinhardtius hippoglossoides Species 0.000 description 1
- 241000242583 Scyphozoa Species 0.000 description 1
- 241001233037 catfish Species 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- the collected material is passed in a hose to the surface for registration, where it is optionally also cleaned of sludge and faecal matter and recycled together with new feed through another hose.
- the feed is supplied from a feed discharge point at a level above the collecting means, either above or below the surface of the water, and then sinks downwards until it is eaten by the fish, or is collected at the bottom of the collecting means if it is not eaten.
- the feed consists typically of pellets of various sizes, and the pellets will increasingly dissolve in water and be spoiled the longer their residence time in the water.
- Figure 3 is a detailed side view of a second part of the apparatus shown in Fig. 1;
- Figure 9 is a detailed sectional side view of a part of the apparatus shown in Figure 8;
- Figure 10 is a side view of a fifth embodiment of the apparatus according to the present invention.
- a plurality of stays (not shown) between the ejector riser 7 and the bottom of the collecting means 6 may fasten the ejector riser 7 to the collecting means 6, and where the gap between the ejector riser 7 and the bottom of the collecting means 6 can preferably be adjusted by suitable adjusting means, such as the ends of the stays being adjustably fastened in grooves in the ejector riser 7.
- a return sensor 12 is advantageously arranged on the recycling riser 15 in order to measure the amount of feed that passes therethrough.
- the return sensor 12 is advantageously connected to a control system that is known per se for the supply of new feed, so that when the return sensor 12 registers insufficient feed through the recycling riser 15 new feed will be supplied from the feed container 1, the amount of feed supplied at any time also in this case thus being determined by the appetite of the fish.
- a simpler variant of the invention is also envisaged, where the distribution of new feed takes place from an automatic feeder/container, or alternatively the feed discharge point from a central feeding system, which is located above the collecting means. This may be particularly suitable when the collecting means is placed at depths as great as 4 - 6 metres below the surface of the water.
- a third, simpler embodiment of the invention is thus shown where the feed supply takes place at the surface by means of a feed silo 1' having a dispensing unit, instead of via a supply hose 4 to the bottom of the collecting means 6 as for the first and second embodiments.
- the feed silo 1' having a dispensing unit
- a recycling means in the form of an ejector riser 7 connected to a transition pipe 5 and a pump 8.
- a recycling riser 15 connected to a recycling pipe 13 and a pump 14, according to the second embodiment shown in Fig. 4 may be used for recycling the feed.
- a combined supply of new feed from the surface, as for the third embodiment, and from the collecting means via a supply hose 4, as for the first and second embodiment, is also conceivable.
- the ejector 20 in the ejector riser 7" is arranged on the outside, and preferably below the funnel-shaped collecting means 6 and connected to an opening in the bottom thereof so that return feed is passed into the ejector 20 and drawn with the water flow or flow of water and feed.
- the ejector riser 7" passes snugly through an opening at the bottom of the collecting means 6 as for the embodiments shown in Figures 4, 6 and 7.
- the return sensor 12 is arranged in the transition pipe 17 between the collecting means 6 and the ejector 20.
- the return feed will be able to have a considerably lower speed past the return sensor 12, which thus simplifies/ enhances the registration of the return feed.
- it is only return feed which passes through the return sensor.
- the return feed transport takes place by means of an ejector instead of a pump. A pump for the return feed is thus avoided, resulting in a lower power consumption and a gentler prehandling than is the case with the embodiment shown in Figures 4, 6 and 7. Since only return feed passes through the return sensor, the software in the previously mentioned control system for the supply of new feed can be simpler.
- the ejector-based recycling unit for the first embodiment can be combined with the non-ejector based feed supply for the second embodiment, and vice versa.
- the ejector-based recycling unit for the first embodiment can be combined with the non-ejector based feed supply for the second embodiment, and vice versa.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
- Processing Of Meat And Fish (AREA)
Abstract
According to the present invention there is described an apparatus and a method for feeding fish, comprising a feed container (1), a feed supply hose (4), a feed supply means (7;7'), a pump (8) to pump the feed mixed with water through the supply hose (4) and the supply means (7;7'), and a collecting means (6) having the shape of a funnel for collecting unused feed at the bottom of the collecting means (6) for the recycling thereof, characterised in that the supply means (7;7') is arranged in the bottom of the funnel-shaped collecting means (6) in order by means of the action of the pump (8) to throw the feed towards and preferably out past the upper opening of the funnel-shaped collecting means (6). The apparatus is further characterised in that the feed collected in the collecting means (6) is recycled in a recycling means connected to the collecting means (6) without having to be passed up towards or above the surface of the water for recycling through the supply hose (4) together with freshly supplied feed.
Description
Device and method for feeding of fish.
The present invention relates to an apparatus and a method for feeding fish according to the preamble in independent claims 1, 11, 14 and 15.
In the feeding apparatus for fish known today which use a preferably funnel-shaped collecting means for collecting unused (uneaten) feed and faecal matter, the collected material is passed in a hose to the surface for registration, where it is optionally also cleaned of sludge and faecal matter and recycled together with new feed through another hose. The feed is supplied from a feed discharge point at a level above the collecting means, either above or below the surface of the water, and then sinks downwards until it is eaten by the fish, or is collected at the bottom of the collecting means if it is not eaten. The feed consists typically of pellets of various sizes, and the pellets will increasingly dissolve in water and be spoiled the longer their residence time in the water.
The aforementioned feeding apparatus have typically been developed for feeding fish of the salmon family, and fish of this type in fact easily ingest feed at and near the surface. However, attention has been increasingly focussed on demersal species such as catfish, turbot and in particular halibut. Unlike the salmon, this last-mentioned fish needs plenty of time to complete a meal. In addition, halibut in cages develop a strict hierarchy where the largest individuals (the females) are apt to cause a suboptimal intake of food for the smaller individuals (the males). In addition, there will be large fluctuations in appetite over time. A feed discharge controlled by the appetite of the fish therefore gives obvious advantages in aquaculture.
In order to adapt the feeding apparatus to the aforementioned demersal species, and also to avoid high surface temperatures, algae, jellyfish and the like, it is desirable to lower the feed discharge point. In the prior art there are limits on the depth at which the feed discharge can take place, since feed will dissolve and be spoiled if it is conveyed over long distances up to the surface in a hose together with water, and thus is exposed to the water for a considerable period of time. If the distance between feed discharge and collection is too great, some of the feed could also be carried away by underwater currents without being collected in the collecting means, with the negative consequences this has for the environment around the cage. Moreover, the lost feed will not least represent a financial loss. Pumping the feed over long distances up to the
surface will also require a great deal of energy, and the facility might also become more complex, which will make production more expensive.
As examples of the aforementioned prior art mention can be made of WO 91/15115, NO 175662 and also the feeder manufactured by the applicant today under the name ΕCOFEED".
In order to reduce or eliminate the aforementioned and other disadvantages, according to the present invention there is provided an apparatus and a method for feeding fish which are characterised respectively by the features disclosed in the characterising clauses of independent claims 1, 11, 14 and 15. Advantageous embodiments are disclosed in the dependent claims.
The apparatus according to the present invention is described in more detail in the following, with reference to the attached drawings, wherein:
Figure 1 is a side view of a first embodiment of the apparatus according to the present invention;
Figure 2 is a detailed side view of first part of the apparatus shown in Fig. 1 ;
Figure 3 is a detailed side view of a second part of the apparatus shown in Fig. 1;
Figure 4 is a side view of a second embodiment of the apparatus according to the present invention;
Figure 5 is a side view of a third embodiment of the apparatus according to the present invention;
Figure 6 shows the apparatus in Figure 4 installed in an aquaculture cage;
Figure 7 shows the apparatus in Figure 4 installed in the bottom of an aquaculture cage;
Figure 8 is a side view of a fourth embodiment of the apparatus according to the present invention;
Figure 9 is a detailed sectional side view of a part of the apparatus shown in Figure 8;
Figure 10 is a side view of a fifth embodiment of the apparatus according to the present invention; and
Figure 11 is a detailed sectional side view of a part of the apparatus shown in Figure 10.
In the figures and the following description the same parts or parts having the same or similar function have been designated by the same reference designations. Furthermore, the terms "upper", "lower" and the like are related to how the apparatus according to the invention is oriented in the water during use, as can be seen in principle from the figures.
With reference to Figures 1 to 3, an apparatus for feeding fish according to a first embodiment of the invention is shown. A feed container 1, preferably for pellet feed, is arranged on a floating platform 2 which floats on the surface of the water. A feed screw 3 carries feed from the feed holder 1 to the inlet of a supply hose 4 which in turn is connected to a transition pipe 5. The transition pipe 5 is passed snugly through an opening in the bottom of a funnel-shaped collecting means 6. An ejector riser 7 having a cross-sectional area, preferably circular, that is greater than the transition pipe 5 is arranged preferably coaxial with the transition pipe 5, and where the transition pipe 5 is partly inserted therein.
Advantageously, a plurality of stays (not shown) between the ejector riser 7 and the bottom of the collecting means 6 may fasten the ejector riser 7 to the collecting means 6, and where the gap between the ejector riser 7 and the bottom of the collecting means 6 can preferably be adjusted by suitable adjusting means, such as the ends of the stays being adjustably fastened in grooves in the ejector riser 7. Thus, it will be possible to obtain an adjustment of the gap between the bottom of the ejector riser 7 and the bottom of the collecting means 6, so that the ejector action produced in this area when the main flow of water, optionally a mixture of water and feed, is pumped through the transition pipe 5 and then out through the ejector riser 7, could be adapted to the size of the feed in question (the pellet size). The arrows drawn in broken lines show how the flow is drawn into the ejector.
A pump 8 is connected to the supply hose 4 in order to pump water out into the supply hose at great speed. With reference to Figure 3, it can be seen that the pipe 9 from the pump 8 passes into the supply hose, and preferably is arranged coaxial therewith over a
limited length. The feed that is supplied to the supply pipe 4 by its falling down into the pipe from the feed screw 3 will thus by means of ejector action be drawn with the water flow. In this way, the feed can advantageously be supplied without passing through the pump 8, and thus avoid being crushed into smaller pieces. The use of an impeller pump means that the pellets do not come into contact with the vanes, and therefore are not damaged. However, large pellets for halibut will require a pump housing of larger dimensions than today's version.
Furthermore, a return sensor 12 is advantageously arranged on the ejector riser 7, and measures the amount of feed which flows therethrough at any given time. The return sensor is connected to a control system that is known per se for the supply of new feed so that when the return sensor 12 registers insufficient feed through the ejector riser 7, more feed will be supplied from the feed container 1, the amount of feed supplied at any time thus being determined by the appetite of the fish.
Referring now to Figures 4 to 6, an alternative second embodiment of the present invention is shown. This embodiment differs from the embodiment described above primarily in that it is not based on the ejector principle, neither for feed supply to the supply hose 4 nor for recycling feed from the recycling unit 6. The feed discharged from the container 1 is drawn into the pump 8 together with water, and is passed onwards through and out of a riser 7' which is passed snugly through an opening at the bottom of the funnel-shaped collecting unit 6. The unused feed that collects at the bottom of the collecting means 6 after having first been ejected from the outlet of the riser 7' is pumped out through a second opening in the bottom of the collecting means 6 which is sealingly connected to a recycling pipe 13 connected to a second pump 14. A recycling riser 15 is in turn connected to the pump 14 and passes snugly through a third opening at the bottom of the funnel-shaped collecting means 6.
As a (non-illustrated) alternative to issuing from a second opening in the bottom of the collecting unit 6, the recycling pipe 13 can be arranged as a pipe bend, preferably shaped at 180°, which is passed through an opening at the bottom of the collecting unit 6, and where the free suction end of the recycling pipe 13 is arranged at a distance above the bottom, and directed down towards the bottom. In this alternative there will not be any opening in the bottom of the collecting unit 6, and the feed that collects at the bottom thereof will by the action of the pump 14 be drawn upwards and into the recycling pipe 13 for recycling through the recycling riser 15.
As a further (non-illustrated) alternative, the whole recycling means, consisting of recycling pipe 13, pump 14 and recycling riser 15, may be arranged within the funnel- shaped collecting means 6, and where the feed collected at the bottom is drawn upwards and into the recycling pipe 13 as for the aforementioned alternative.
A return sensor 12 is advantageously arranged on the recycling riser 15 in order to measure the amount of feed that passes therethrough. As was the case with the first embodiment of the invention, the return sensor 12 is advantageously connected to a control system that is known per se for the supply of new feed, so that when the return sensor 12 registers insufficient feed through the recycling riser 15 new feed will be supplied from the feed container 1, the amount of feed supplied at any time also in this case thus being determined by the appetite of the fish.
A simpler variant of the invention is also envisaged, where the distribution of new feed takes place from an automatic feeder/container, or alternatively the feed discharge point from a central feeding system, which is located above the collecting means. This may be particularly suitable when the collecting means is placed at depths as great as 4 - 6 metres below the surface of the water. Referring now to Fig. 5, a third, simpler embodiment of the invention is thus shown where the feed supply takes place at the surface by means of a feed silo 1' having a dispensing unit, instead of via a supply hose 4 to the bottom of the collecting means 6 as for the first and second embodiments. In the bottom of the collecting means 6, as in the case of the first embodiment shown in Figs. 1 and 2, there is provided a recycling means in the form of an ejector riser 7 connected to a transition pipe 5 and a pump 8. Alternatively, a recycling riser 15 connected to a recycling pipe 13 and a pump 14, according to the second embodiment shown in Fig. 4, may be used for recycling the feed. A combined supply of new feed from the surface, as for the third embodiment, and from the collecting means via a supply hose 4, as for the first and second embodiment, is also conceivable.
Currently preferred embodiments of the invention are shown in Figures 8-11. In these figures, the ejector 20 in the ejector riser 7" is arranged on the outside, and preferably below the funnel-shaped collecting means 6 and connected to an opening in the bottom thereof so that return feed is passed into the ejector 20 and drawn with the water flow or flow of water and feed. The ejector riser 7" passes snugly through an opening at the bottom of the collecting means 6 as for the embodiments shown in Figures 4, 6 and 7. The return sensor 12 is arranged in the transition pipe 17 between the collecting means 6 and the ejector 20.
In the embodiment shown in Figures 8 and 9 the flow is forced through the supply hose 4 and into the ejector 20 by the pump 8 in the same way as previously described for the embodiment shown in Figure 4 in that the supply pipe 4 is perforated below the surface of the water upstream of the pump 8, thereby allowing water to be drawn into the supply pipe 4.
In the embodiment shown in Figures 10 and 11, the flow is forced through the supply hose 4 by a pump 8 connected to a hose 18 which is connected to a sleeve 19 arranged around the circumference of, and preferably at the end of the supply hose 4 and with nozzles opening into the supply hose 4. The nozzles face essentially in the direction of flow and thus draw the water or the mixture of water and feed through the supply hose 4 and intcTthe ejector 20. Thus, a two-step ejector is obtained.
In Figures 9 and 11, the directions of flow in the ejector 20 are indicated by means of arrows.
Advantages of the last-described, preferred embodiments are that the return feed will be able to have a considerably lower speed past the return sensor 12, which thus simplifies/ enhances the registration of the return feed. In addition, it is only return feed which passes through the return sensor. This also applies in a way to the embodiment shown in Figures 4, 6 and 7, but the difference is that the return feed transport takes place by means of an ejector instead of a pump. A pump for the return feed is thus avoided, resulting in a lower power consumption and a gentler prehandling than is the case with the embodiment shown in Figures 4, 6 and 7. Since only return feed passes through the return sensor, the software in the previously mentioned control system for the supply of new feed can be simpler.
Furthermore, with reference to Figures 1 and 4, for all the embodiments a net 10 is advantageously provided over the upper opening of the funnel-shaped collecting means 6 to prevent fish from swimming into the collecting means. The area of the upper opening in the collecting unit 6 is also preferably so large that all feed ejected from the riser 7 is caught by the collecting unit 6 when it sinks down again, also under the influence of any underwater currents. The collecting means 6 will also advantageously be held up by floating bodies 11 which float on the surface of the water.
Tests also show that the recycling of faecal matter does not pose a problem, as this matter is broken down and disappears because of the pump pressure during recycling.
Lastly, Figures 6 and 7 show the apparatus according to the second embodiment of the present invention placed in an aquaculture cage 16 where the feed discharge point is lowered into the cage or placed at the lower edge of the cage 16 for feeding, for example, halibut in a flat-bottomed cage 16.
With reference to the above, it should be stressed that the features of the embodiments described can of course be combined without departing from the spirit of the invention. Thus, for example, the ejector-based recycling unit for the first embodiment can be combined with the non-ejector based feed supply for the second embodiment, and vice versa. There may also be provided a number of components other than those in the embodiments described above, for example, a different number of risers, pumps or the like, without departing from the spirit of the invention.
Claims
1. An apparatus for feeding fish, comprising a feed container (1), a feed supply hose (4), a feed supply means (7; 7'; 7"), a pump (8) to pump the feed mixed with water through the supply hose (4) and the supply means (7; 7'; 7"), and a collecting means (6) having the shape of a funnel for collecting unused feed at the bottom of the collecting means (6) for the recycling thereof, characterised in that the supply means (7; 7; 7") is arranged at the bottom of the funnel-shaped collecting means (6) in order by the action of the pump to throw the feed towards and preferably out past the upper opening of the funnel-shaped collecting means (6).
2. An apparatus according to claim 1, characterised in that the feed collected in the collecting means (6) is recycled in a recycling means connected to the collecting means (6), without having to be passed up towards or above the surface of the water for recycling through the supply hose (4) together with freshly supplied feed.
3. An apparatus according to claims 1 to 2, characterised in that the recycling means includes an ejector in the junction between a transition pipe (5) connected to the downstream end of the supply hose (4) and an ejector riser (7) for ejecting the feed through the upper end of the riser (7), said riser (7) being provided with a cross-sectional area at its lower end that is greater than the cross-sectional area at the opposite end of the transition pipe (5), that the transition pipe (5) is sealingly connected to the collecting means (6) through an opening in the bottom thereof, and that the transition pipe (5) is preferably arranged coaxial with the ejector riser (7) and partly inserted therein, so that a gap is formed between the transition pipe (5) and the riser (7) in order by means of ejector action to draw the feed collected at the bottom of the collecting means (6) for recycling through the ejector riser (7).
4. An apparatus according to claims 1 to 2, characterised in that the recycling means includes a second pump (14) connected to a recycling pipe (13) issuing from, and sealingly connected to an opening in the bottom of the collecting means (6). and a connected recγςlinε riser (15) ϋasfiin-r from the n mn through a second opening at the bottom collecting means, and where new feed is supplied through a separate riser (7') which is passed through a third opening at the bottom of the collecting means (6).
5. An apparatus according to claims 1 to 2, characterised in that the recycling means includes an ejector (20) at the junction between the supply hose (4) and the ejector riser (7"), and where return feed is supplied to the ejector (20) through a transition pipe (17) from an opening in the bottom of the collecting means (6), whereupon the return feed drawn into the ejector (20) is recycled through the ejector riser (7").
6. An apparatus according to any one of the preceding claims, characterised in that a return sensor (12) for measuring the amount of feed is arranged on the ejector riser (7; 7')' or the recycling riser (7').
7. An apparatus according to claim 6, characterised in that the return sensor (12) is connected to a control system for dispensing new feed, so that when the return sensor (12) registers insufficient feed through the riser (7; 7') new feed will be supplied from the feed container (1), the amount of feed supplied at any time thus being determined by the appetite of the fish.
8. An apparatus according to any one of the preceding claims, characterised in that a net (10) is arranged in the upper opening of the funnel-shaped collecting means (6) to prevent fish from swimming into the collecting means.
9. An apparatus according to claim 3, characterised in that the height of the gap opening can be adjusted for different types of feed (pellet sizes).
10. An apparatus according to any one of the preceding claims, characterised in that the supply of feed between the feed container (1) and the feed hose (4) takes place by means of ejector action, and that the feed supply point is located after the pump (8) so that the feed supplied does not pass through the pump (8).
1 1. An apparatus for feeding fish, comprising a feed container (1 ') for distributing feed at one or more distribution points above a collecting means (6) having the shape of a funnel for collecting unused feed at the bottom of the collecting means (6) for the recycling thereof, characterised in that the feed collected in the collecting means (6) is recycled in a recycling means connected to the collecting means (6) without having to be passed up towards or above the surface of the water in a hose for recycling.
12. An apparatus according to claim 11 , characterised in that the recycling means consists of an ejector at the junction between a transition pipe (5) and an ejector riser (7) for ejecting the feed through the upper end of the riser (7), said riser (7) being provided with a cross-sectional area at its lower end that is greater than the cross-sectional area at the opposite end of the transition pipe (5), that the transition pipe (5) is sealingly connected to the collecting means (6) through an opening in the bottom thereof, and that the transition pipe (5) is preferably arranged coaxial with the ejector riser (7) and partly inserted therein, so that a gap is formed between the transition pipe (5) and the riser (7) in order by means of ejector action to draw the feed collected in the bottom of the collecting means (6) for recycling through the ejector riser (7).
13. An apparatus according to claim 11 , characterised in that the recycling means (6) includes a pump (14) connected to a recycling pipe (13) issuing from and sealingly connected to an opening in the bottom of the collecting means (6), and a connected recycling riser (15) passing from the pump through a second opening at the bottom of the collecting means.
14. A method for feeding fish from an apparatus comprising a feed container (1), a feed supply hose (4), a feed supply means (7; 7'; 7"), a pump (8) for pumping feed mixed with water through the supply pipe (4) and the supply means (7; 7';
7"), and a collecting means (6) having the shape of a funnel for collecting unused feed at the bottom of the collecting means (6) for the recycling thereof, characterised in that the supply means (7; 7'; 7") located at the bottom of the funnel-shaped collecting means (6), by means of the action of the pump, ensures that feed is thrown towards, and preferably past the upper opening of the funnel-shaped collecting means (6).
15. A method for feeding fish, comprising a feed container (1 ') for distributing feed at one or more distribution points above a collecting means (6) having the shape of a funnel for collecting unused feed at the bottom of the collecting means (6) for the recvcline thereof, characterised bv recvclin-r the feed collected in the collecting means (6) in a recycling means connected to the collecting means (6) without having to pass the feed up towards or above the surface of the water in a hose for recycling.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO20006523 | 2000-12-20 | ||
| NO20006523A NO20006523A (en) | 2000-12-20 | 2000-12-20 | Device and procedure for feeding fish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002056676A1 true WO2002056676A1 (en) | 2002-07-25 |
Family
ID=19911932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/NO2001/000375 WO2002056676A1 (en) | 2000-12-20 | 2001-09-13 | Device and method for feeding of fish |
Country Status (2)
| Country | Link |
|---|---|
| NO (1) | NO20006523A (en) |
| WO (1) | WO2002056676A1 (en) |
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| EP1773115A1 (en) * | 2004-06-02 | 2007-04-18 | Aquaculture Engineering Group Ltd. | Fish feed apparatus for underwater feeding |
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| WO2016058108A1 (en) * | 2014-10-15 | 2016-04-21 | Pavez Vasquez Claudio Marcelo | Double-cone tubular device without an electric power supply, for the delivery and distribution of pelleted fish feed in uniform rations |
| WO2016063033A1 (en) * | 2014-10-20 | 2016-04-28 | Seafarm Products As | Method and apparatus for aquaculture feeding |
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| CN110199930A (en) * | 2019-06-20 | 2019-09-06 | 徐佳斌 | A kind of uniform spreader in fish pond |
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| WO2020143890A1 (en) | 2019-01-11 | 2020-07-16 | Graintec A/S | Aquaculture system with improved feed transportation and method for transporting feed in an aquaculture system |
| CN112655628A (en) * | 2020-12-28 | 2021-04-16 | 望江县鸿泰生物科技有限公司 | Feeding device for aquatic product cultivation |
| WO2022012728A1 (en) | 2020-07-15 | 2022-01-20 | Graintec A/S | Method for raising fish in a recirculated aquaculture system |
| NO20220743A1 (en) * | 2022-06-30 | 2024-01-01 | Icon Systems As | Fish feeding apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102919187A (en) * | 2012-11-21 | 2013-02-13 | 浙江海洋学院 | Feed supplying device for mariculture |
| NO343173B1 (en) * | 2017-05-19 | 2018-11-26 | Akvadesign As | Feeding system for a closed cage and method for distributing a feed in a closed cage |
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|---|---|---|---|---|
| US4237820A (en) * | 1976-03-24 | 1980-12-09 | Mueller Hans | Method and an arrangement for feeding fish with a fodder |
| US4297973A (en) * | 1980-04-21 | 1981-11-03 | K.R. Associates, Inc. | Process and apparatus for increasing the utilization of fish feed in fish farming ponds and the like |
| JPH05219861A (en) * | 1992-02-08 | 1993-08-31 | Sanshin Ind Co Ltd | Device for cleaning water in water tank |
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2000
- 2000-12-20 NO NO20006523A patent/NO20006523A/en not_active IP Right Cessation
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2001
- 2001-09-13 WO PCT/NO2001/000375 patent/WO2002056676A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4237820A (en) * | 1976-03-24 | 1980-12-09 | Mueller Hans | Method and an arrangement for feeding fish with a fodder |
| US4297973A (en) * | 1980-04-21 | 1981-11-03 | K.R. Associates, Inc. | Process and apparatus for increasing the utilization of fish feed in fish farming ponds and the like |
| JPH05219861A (en) * | 1992-02-08 | 1993-08-31 | Sanshin Ind Co Ltd | Device for cleaning water in water tank |
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| Title |
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| PATENT ABSTRACTS OF JAPAN * |
Cited By (19)
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| EP1773115A1 (en) * | 2004-06-02 | 2007-04-18 | Aquaculture Engineering Group Ltd. | Fish feed apparatus for underwater feeding |
| EP1773115A4 (en) * | 2004-06-02 | 2008-04-09 | Aquaculture Engineering Group | Fish feed apparatus for underwater feeding |
| CN103814850A (en) * | 2014-03-05 | 2014-05-28 | 浙江省海洋水产研究所 | Fish wintering aquaculture net cage and method for wintering aquacultured Nibea albiflora by utilizing net cage |
| JP5844495B1 (en) * | 2014-09-15 | 2016-01-20 | 大韓民国 | Pressure-adjustable underwater upward feed feeder for water ginger |
| WO2016058108A1 (en) * | 2014-10-15 | 2016-04-21 | Pavez Vasquez Claudio Marcelo | Double-cone tubular device without an electric power supply, for the delivery and distribution of pelleted fish feed in uniform rations |
| WO2016063033A1 (en) * | 2014-10-20 | 2016-04-28 | Seafarm Products As | Method and apparatus for aquaculture feeding |
| EP3141111A3 (en) * | 2015-09-08 | 2017-07-19 | SP/F Frama | System and method for removing exterior parasites from fish and fish feeding system and method |
| CN108207732A (en) * | 2017-12-25 | 2018-06-29 | 赵桂香 | A kind of fish pond feed tossed device and feed shed method |
| CN109042432A (en) * | 2018-09-08 | 2018-12-21 | 章立香 | A kind of pond aquaculture feeding apparatus |
| CN109042432B (en) * | 2018-09-08 | 2020-08-11 | 永新县山木子农产品有限公司 | Feeding equipment for pond aquaculture |
| WO2020143890A1 (en) | 2019-01-11 | 2020-07-16 | Graintec A/S | Aquaculture system with improved feed transportation and method for transporting feed in an aquaculture system |
| CN110199930A (en) * | 2019-06-20 | 2019-09-06 | 徐佳斌 | A kind of uniform spreader in fish pond |
| CN110199930B (en) * | 2019-06-20 | 2021-07-06 | 芜湖市千官康养农业科技有限责任公司 | Even spreader that pond was used |
| CN111264447A (en) * | 2020-04-07 | 2020-06-12 | 淮安信息职业技术学院 | Pneumatic conveying lobster bait casting machine for deep sea net cage |
| CN111264447B (en) * | 2020-04-07 | 2021-08-27 | 淮安信息职业技术学院 | Pneumatic conveying lobster bait casting machine for deep sea net cage |
| WO2022012728A1 (en) | 2020-07-15 | 2022-01-20 | Graintec A/S | Method for raising fish in a recirculated aquaculture system |
| US11771066B2 (en) | 2020-07-15 | 2023-10-03 | Graintec A/S | Method for raising fish in a recirculated aquaculture system |
| CN112655628A (en) * | 2020-12-28 | 2021-04-16 | 望江县鸿泰生物科技有限公司 | Feeding device for aquatic product cultivation |
| NO20220743A1 (en) * | 2022-06-30 | 2024-01-01 | Icon Systems As | Fish feeding apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| NO312271B1 (en) | 2002-04-22 |
| NO20006523D0 (en) | 2000-12-20 |
| NO20006523A (en) | 2002-04-22 |
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