CN112005940B - Marine ranching multifunctional platform with float raft type culture device - Google Patents
Marine ranching multifunctional platform with float raft type culture device Download PDFInfo
- Publication number
- CN112005940B CN112005940B CN202011158994.1A CN202011158994A CN112005940B CN 112005940 B CN112005940 B CN 112005940B CN 202011158994 A CN202011158994 A CN 202011158994A CN 112005940 B CN112005940 B CN 112005940B
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- platform
- sea
- flotation pontoon
- fixed mounting
- frame
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- 238000009304 pastoral farming Methods 0.000 title abstract description 7
- 238000005188 flotation Methods 0.000 claims abstract description 25
- 238000009395 breeding Methods 0.000 claims abstract description 9
- 230000001488 breeding effect Effects 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims abstract description 7
- 241000251468 Actinopterygii Species 0.000 claims description 20
- 230000000694 effects Effects 0.000 claims description 7
- 239000013535 sea water Substances 0.000 abstract description 30
- 230000009471 action Effects 0.000 abstract description 7
- 230000005484 gravity Effects 0.000 abstract description 4
- 230000001174 ascending effect Effects 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 241000512259 Ascophyllum nodosum Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
-
- 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
- A01K61/65—Connecting or mooring devices therefor
-
- 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
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)
Abstract
The invention relates to the technical field of offshore devices, and discloses a multifunctional marine ranching platform with a float raft type culture device. This multi-functional platform in marine ranching with raft formula breeding device, be the triangle-shaped setting of falling through the flotation pontoon, and under pulling force and platform action of gravity under the balancing weight, the flotation pontoon is located below the sea level, guarantee that the flotation pontoon does not receive the biggest sea impact of power of flowing, guarantee platform stability, the flotation pontoon that the triangle-shaped set up of falling simultaneously, can disperse the ascending fluctuating force of sea water, and the power of rolling unloading, thereby it is steady to guarantee rocking of flotation pontoon when receiving the fluctuating force, height and platform cooperation installation through last grudging post, make the platform be located the top on sea, do not contact with the sea water, thereby reduce the influence that the platform received the wave, guarantee the stability of platform at sea.
Description
Technical Field
The invention relates to the field of offshore devices, in particular to a multifunctional platform of a marine ranching with a float raft type culture device.
Background
The marine ranch is an artificial fishery arranged for planned cultivation and management of fishery resources in a specific sea area, firstly an environment suitable for growth and propagation of marine organisms is built, aquatic organisms are bred, then the attracted organisms and the artificially bred organisms are gathered together to ensure the stable and continuous growth of aquatic resources serving as the basis of fishery production, the multifunctional platform of the marine ranch is an innovative platform system, the concept and the main body of the marine platform are used as the basis, the cultivation of the marine ranch and a marine base is used as a target user, the multifunctional central platform of the marine ranch is built, and the marine environment monitoring, the ranch nursing management and the marine fishing and leisure service platform are realized by carrying hydrological water quality monitoring equipment and underwater monitoring equipment.
An existing anchoring marine ranch is characterized in that a platform is installed on a floating barrel, the platform floats on the water surface and is fixed by an iron anchor, the platform is powered by solar energy and wind power, the normal work of the platform is maintained, and the water quality of a fish culture area is monitored in real time.
The current marine ranch platform is that the direct showy is on the sea, and under the effect of ocean current and wind power, the velocity of flow of sea water is faster, and is bigger to the impact force that marine ranch platform produced, and the wave drives the platform and rocks the back, and the area of contact of platform and sea reduces, and the platform rocks more seriously, influences the normal work life of personnel on the platform.
Disclosure of Invention
The invention provides a multifunctional marine ranching platform with a float raft type culture device, which has the advantages of good fish culture effect and good platform stability, and solves the problem that an anchored floating platform is not stable.
The invention provides the following technical scheme: the utility model provides a multi-functional platform in marine ranch with float raft formula breeding device, includes the platform, the upper reaches that the platform is close to ocean current is provided with breeds the frame, the low reaches that the platform is close to ocean current is provided with breeds the row, the both sides fixed mounting of platform has the fish frame of raising fish, the bottom fixed mounting of raising fish frame has the floating frame, the bottom fixed mounting of platform has the mounting bracket, the lower part movable sleeve of mounting bracket is equipped with the flotation pontoon, the bottom movable sleeve of mounting bracket is equipped with the balancing weight.
As preferred, the mounting bracket includes grudging post and lower grudging post, the lower surface integrated into one piece of going up the grudging post ring has the erection column, the middle part fixed mounting of lower grudging post upper surface has a circular slide, rolling installation has the gyro wheel in the recess of circular slide, the erection column passes through swivel nut fixed mounting with the gyro wheel, the both sides fixed mounting of lower grudging post lower surface has the side bearer, side bearer and balancing weight roll installation.
Preferably, the lower vertical frame is in an inverted cone shape and movably sleeved with the buoy, and the upper surface and the lower surface of the upper vertical frame are mounted through a connecting rod.
Preferably, a barrel frame is fixedly mounted on one side of the fish culture frame, air grooves are formed in the upper end and the lower end of the barrel frame, a stud is sleeved on an inner bearing of the vertical section of the barrel frame, a spiral groove is formed in the outer surface of the stud, a paddle is sleeved on an inner bearing of the transverse section of the barrel frame, and helical teeth are matched between the stud and the paddle.
Preferably, the counterweight block and the side frame are arranged vertically to the buoy after being mounted, and the bottom of the side frame is arranged in a cone angle mode.
The invention has the following beneficial effects:
1. this multi-functional platform in marine ranching with raft formula breeding device, be the triangle-shaped setting of falling through the flotation pontoon, and under pulling force and platform action of gravity under the balancing weight, the flotation pontoon is located below the sea level, guarantee that the flotation pontoon does not receive the biggest sea impact of power of flowing, guarantee platform stability, the flotation pontoon that the triangle-shaped set up of falling simultaneously, can disperse the ascending fluctuating force of sea water, and the power of rolling unloading, thereby it is steady to guarantee rocking of flotation pontoon when receiving the fluctuating force, height and platform cooperation installation through last grudging post, make the platform be located the top on sea, do not contact with the sea water, thereby reduce the influence that the platform received the wave, guarantee the stability of platform at sea.
2. This multi-functional platform in marine ranch with pontoon formula breeding device, through the perpendicular cooperation of flotation pontoon and balancing weight, because the flotation pontoon that the combination formed is bigger with sea water area of contact, it is bigger to be influenced by sea water flow power, thereby make the sea water flow strike flotation pontoon and balancing weight after, when the sea water flows along the axis direction of balancing weight, the flotation pontoon is the biggest with sea water area of contact, strike under the sea water, the flotation pontoon can be rotatory through the gyro wheel, make the side and the sea water contact of flotation pontoon strike, the transverse surface and the sea water of balancing weight strike this moment, the piece of joining in marriage seeds can slide along the side bearer, can increase the weight of platform one side, thereby reduce the range that the platform rocke.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 4 is a schematic top view of the lower stand of the present invention;
FIG. 5 is a schematic bottom view of the upper stand according to the present invention;
FIG. 6 is a schematic view of a roller mounting structure according to the present invention;
FIG. 7 is a side view of the sideframe of the present invention;
FIG. 8 is an enlarged view of the structure at B in FIG. 4 according to the present invention.
In the figure: 1. a platform; 2. a culture rack; 3. cultivating and arranging; 4. a fish culture rack; 5. a floating frame; 6. a mounting frame; 61. an upper vertical frame; 62. a lower vertical frame; 63. a circular slideway; 64. a roller; 65. mounting a column; 66. a side frame; 7. a float bowl; 8. a balancing weight; 9. a barrel frame; 10. an air tank; 11. a stud; 12. a paddle; 13. and (4) helical teeth.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, a multifunctional platform for an ocean ranch with a float raft type culture device comprises a platform 1, wherein a culture frame 2 is arranged on the upper portion of the platform 1 close to ocean currents, a culture row 3 is arranged on the lower portion of the platform 1 close to the ocean currents, fish culture frames 4 are fixedly arranged on two sides of the platform 1, a floating frame 5 is fixedly arranged at the bottom of each fish culture frame 4, and the floating frame 5 is used for supporting the fish culture frames 4, so that the fish culture frames 4 are more stable; the bottom fixed mounting of platform 1 has mounting bracket 6, and the lower partial movable sleeve of mounting bracket 6 is equipped with flotation pontoon 7, and the bottom movable sleeve of mounting bracket 6 is equipped with balancing weight 8.
As shown in fig. 2, 4, 5, 6 and 8, the mounting frame 6 includes an upper vertical frame 61 and a lower vertical frame 62, the lower vertical frame 62 is movably sleeved with the protruding parts at the two ends of the buoy 7, a mounting column 65 is integrally formed on the lower surface of the circular ring of the upper vertical frame 61, a circular slideway 63 is fixedly mounted in the middle of the upper surface of the lower vertical frame 62, a roller 64 is rotatably mounted in the groove of the smooth channel 63, the mounting column 65 and the roller 64 are fixedly mounted through a screw sleeve, side frames 66 are fixedly mounted on the two sides of the lower surface of the lower vertical frame 62, the side frames 66 and the counterweight 8 are rotatably mounted, the roller 64 and the mounting column 65 are fixedly mounted through a T-shaped nut, the upper vertical frame 61 and the lower vertical frame 62 are mounted and connected through the roller 64 and the mounting column 65, the lower vertical frame 62 is rotatable on the smooth channel 63 through the roller 64 in the sea, and the buoy 7 needs to rotate after being impacted by the flow of seawater, thereby driving the roller 64 to slide on the smooth track 63, and the lower vertical frame 62 rotates, so that the side surface of the float 7 is contacted and impacted with the seawater, the area of the float 7 receiving the seawater impact is reduced, and the shaking of the platform 1 is reduced.
Wherein, lower grudging post 62 sets up to the back taper, pass through both ends bulge with a plurality of flotation pontoons 7 with lower grudging post 62 suit after, make up into the back taper form, go up through the connecting rod installation between the upper surface of grudging post 61 and the lower surface, setting through last grudging post 61, make platform 1 be located the sea water top, platform 1's lower surface does not contact with the sea surface, and lower grudging post 62 is located below the sea surface under the effect of balancing weight 8, it receives the sea surface flow influence to reduce the equipment, make up into the flotation pontoon 7 of a plurality of movable suit of back taper simultaneously, can disperse the ascending sea water fluctuating force that receives to both sides, platform 1 receives the effect power of fluctuating force and reduces, thereby guarantee the stability of grudging post 62 in the sea down, and then reduce platform 1.
Wherein, as shown in fig. 2, one side fixed mounting of fish culture frame 4 has barrel holder 9, air groove 10 has been seted up at the upper and lower both ends of barrel holder 9, the inside bearing cover of the vertical section of barrel holder 9 is equipped with double-screw bolt 11, the helicla flute has been seted up to the surface of double-screw bolt 11, the inside bearing cover of the horizontal section of barrel holder 9 is equipped with paddle 12, double-screw bolt 11 has skewed tooth 13 with the meshing of paddle 12, receive the influence of ocean current through paddle 12 and rotate, through skewed tooth 13 transmission, make double-screw bolt 11 rotatory, pass through the air in the air groove 10 screw-in pitch and then reach the transmission effect, carry the external air in the sea, thereby promote the oxygen content of the sea water of fish culture frame 4 below, thereby improve the.
Wherein, as shown in fig. 2, the counterweight 8 and the side frame 66 are arranged vertically to the float bowl 7, the bottom of the side frame 66 is arranged at a taper angle, and the counterweight 8 and the float bowl 7 are arranged vertically to make the float bowl 7 impacted by seawater, and because the contact area between the float bowl 7 and seawater is large, the lower vertical frame 62 can rotate after the float bowl 7 is stressed, and the counterweight 8 is in front contact with seawater at the moment, and is large in impact force, and can swing along the side frame 66, so that the balance can be adjusted by the counterweight 8 after the platform 1 is rocked by seawater, and the stability of the platform 1 is ensured.
The working principle of the ocean platform of the float valve type culture device is as follows:
the mounting frames 6 are spliced into an inverted cone shape, the floating barrel 7 and the balancing weight 8 are movably sleeved on the mounting frames, the balancing weight 8 is movably mounted at the bottom of the side frame 66, the floating barrel 7 is positioned below the sea surface under the action of gravity, the upper vertical frame 61 is connected and mounted through the upright posts, the platform 1 is positioned above the sea level and does not contact with sea waves, the stability of the platform 1 is ensured, meanwhile, the culture frame 2 is arranged at the upstream of the platform 1, the culture row 3 is arranged at the downstream, algae such as kelp is cultured on the culture frame 2, seawater is purified, the water quality of fish cultured at the position of the fish culture frame 4 is improved, the culture row 3 arranged at the downstream can further digest the spilled feed, the sea level sea waves do work on the blades 12, the blades 12 rotate to transmit rotating force to the stud 11 through the inclined teeth 13, the rotating stud 11 rotates to enable air at sea to enter the thread pitch of the, thereby improve the sea water oxygen content of breeding the fish below breeding the fish frame 4, improve the density of breeding the fish, improve equipment production efficiency, flotation pontoon 7 is when being strikeed by the sea water in the sea, the sea water contacts with the horizontal plane of flotation pontoon 7, flotation pontoon 7 can be rotatory through gyro wheel 64, make the horizontal plane of balancing weight 8 directly strike with the sea water, balancing weight 8 after being strikeed slides along side bearer 66, one side of platform 1 receives the sea water to flow simultaneously and can fluctuate, when one side lifting of platform 1, balancing weight 8 receives the sea water to promote the lifting side, can increase the weight of platform 1 one side, be influenced by slope side bearer 66, balancing weight 8 slides down to the opposite side under the action of gravity, platform 1 opposite side is lifted this moment, balancing weight 8 reaches balanced effect once more, thereby reduce the range of rocking of platform 1.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a multi-functional platform of marine ranch with raft formula breeding device, includes platform (1), its characterized in that: the utility model discloses a fish raising device, including platform (1), bottom fixed mounting, mounting bracket (6), the lower part movable sleeve of mounting bracket (6) has flotation pontoon (7), the bottom movable sleeve of mounting bracket (6) is equipped with balancing weight (8), mounting bracket (6) include stand (61) and lower stand (62), the lower surface integrated into one piece of the lower surface of last stand (61) ring has erection column (65), the middle part fixed mounting of lower stand (62) upper surface has round slide (63), gyro wheel (64) are installed in the recess of round slide (63) that rolls, erection column (65) and gyro wheel (64) pass through swivel nut fixed mounting, the both sides fixed mounting of lower grudging post (62) lower surface has side bearer (66), side bearer (66) with balancing weight (8) roll installation, grudging post (62) set up to back taper and flotation pontoon (7) activity suit down, through the connecting rod installation between the upper surface of going up grudging post (61) and the lower surface.
2. The marine ranch multi-functional platform with raft culture apparatus of claim 1, wherein: one side fixed mounting of breeding fish frame (4) has barrel holder (9), gas tank (10) have been seted up at the upper and lower both ends of barrel holder (9), the inside bearing cover of the vertical section of barrel holder (9) is equipped with double-screw bolt (11), the helicla flute has been seted up to the surface of double-screw bolt (11), the inside bearing cover of the horizontal section of barrel holder (9) is equipped with paddle (12), double-screw bolt (11) and paddle (12) cooperation have skewed tooth (13).
3. The marine ranch multi-functional platform with raft culture apparatus of claim 1, wherein: the counterweight block (8) and the side frame (66) are arranged vertically to the buoy (7) after being mounted, and the bottom of the side frame (66) is arranged in a cone angle mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011158994.1A CN112005940B (en) | 2020-10-27 | 2020-10-27 | Marine ranching multifunctional platform with float raft type culture device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011158994.1A CN112005940B (en) | 2020-10-27 | 2020-10-27 | Marine ranching multifunctional platform with float raft type culture device |
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| Publication Number | Publication Date |
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| CN112005940A CN112005940A (en) | 2020-12-01 |
| CN112005940B true CN112005940B (en) | 2021-01-29 |
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| CN202011158994.1A Active CN112005940B (en) | 2020-10-27 | 2020-10-27 | Marine ranching multifunctional platform with float raft type culture device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117356500B (en) * | 2023-11-16 | 2024-08-13 | 国信(台州)渔业有限公司 | Wind-wave-resistant type offshore pasture cultivation platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998027810A1 (en) * | 1996-12-23 | 1998-07-02 | Ehod, Machraz | Installation for growing fish in the open sea |
| CN105010172A (en) * | 2014-04-17 | 2015-11-04 | 朱剑文 | Marine agricultural anti-wave and stable submerged multi-functional planting and culturing apparatus |
| BR102012029531A2 (en) * | 2012-11-21 | 2016-03-22 | Artur Caron Mottin | floating platform |
| CN107439457A (en) * | 2017-09-12 | 2017-12-08 | 浙江海洋大学 | A kind of aquafarm platform |
| CN108835009A (en) * | 2018-08-29 | 2018-11-20 | 中国水产科学研究院渔业机械仪器研究所 | A kind of semi-submerged offshore cultivation processing platform |
| CN110214733A (en) * | 2019-07-10 | 2019-09-10 | 中国水产科学研究院渔业机械仪器研究所 | A kind of aquafarm cultivation platform and its control method |
| CN210519823U (en) * | 2019-07-10 | 2020-05-15 | 中国水产科学研究院渔业机械仪器研究所 | Culture platform for marine ranching |
| CN211671953U (en) * | 2019-11-18 | 2020-10-16 | 江苏鑫世丰技术产权交易有限公司 | Net frame type intelligent deep and far offshore fishing ground culture platform |
-
2020
- 2020-10-27 CN CN202011158994.1A patent/CN112005940B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998027810A1 (en) * | 1996-12-23 | 1998-07-02 | Ehod, Machraz | Installation for growing fish in the open sea |
| BR102012029531A2 (en) * | 2012-11-21 | 2016-03-22 | Artur Caron Mottin | floating platform |
| CN105010172A (en) * | 2014-04-17 | 2015-11-04 | 朱剑文 | Marine agricultural anti-wave and stable submerged multi-functional planting and culturing apparatus |
| CN107439457A (en) * | 2017-09-12 | 2017-12-08 | 浙江海洋大学 | A kind of aquafarm platform |
| CN108835009A (en) * | 2018-08-29 | 2018-11-20 | 中国水产科学研究院渔业机械仪器研究所 | A kind of semi-submerged offshore cultivation processing platform |
| CN110214733A (en) * | 2019-07-10 | 2019-09-10 | 中国水产科学研究院渔业机械仪器研究所 | A kind of aquafarm cultivation platform and its control method |
| CN210519823U (en) * | 2019-07-10 | 2020-05-15 | 中国水产科学研究院渔业机械仪器研究所 | Culture platform for marine ranching |
| CN211671953U (en) * | 2019-11-18 | 2020-10-16 | 江苏鑫世丰技术产权交易有限公司 | Net frame type intelligent deep and far offshore fishing ground culture platform |
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| CN112005940A (en) | 2020-12-01 |
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