CN202979890U - Wave-resistant liftable shellfish raft type cultivating device - Google Patents
Wave-resistant liftable shellfish raft type cultivating device Download PDFInfo
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- CN202979890U CN202979890U CN2012202757239U CN201220275723U CN202979890U CN 202979890 U CN202979890 U CN 202979890U CN 2012202757239 U CN2012202757239 U CN 2012202757239U CN 201220275723 U CN201220275723 U CN 201220275723U CN 202979890 U CN202979890 U CN 202979890U
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- 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
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Abstract
The utility model discloses a wave-resistant liftable shellfish raft type cultivating device which comprises the following components: a cultivating main rope for hanging and cultivating shellfish cultivation objects, and a plurality of floating balls which are uniformly tied on the cultivating main rope. Two rope ends of the cultivating main rope are respectively connected with a depth regulator which is used for lifting/dropping the cultivating main rope. Each depth regulator comprises the following components: a floating cylinder, a first depth regulating rope, a second depth regulating rope and a counterweight which is used for fixing the position of the cultivating device in the sea. The floating cylinder floats on sea level, and the counterweight is sunk undersea. The first depth regulating rope and the second depth regulating rope are fastened with one end rope end of the cultivating main rope. After the second depth regulating rope passes through the top ring of the counterweight, the second depth regulating rope and the first depth regulating rope are respectively tired on the floating cylinder and regulating rope segments are preserved. Through folding/unfolding the regulating rope segments of the first depth regulating rope and the second depth regulating rope, the cultivating main rope is lifted or dropped in the sea, thereby obtaining higher wave resistance.
Description
Technical field
The utility model relates to a kind of facility of using in aquaculture field, i.e. a kind of bivalve raft cultivation device, specifically a kind of wind wave resistance liftable bivalve raft cultivation device.
Background technology
The raft culture system is the chief component of China shallow sea shellfish cultivation, for fishery economic development and fisherman's increased income have been made huge contribution.At present, China's shallow sea shellfish raft culture area has reached 20000hm2, produces nearly more than 100 ten thousand tons of shellfish per year.Yet, being subjected in recent years ordering about of economic interests, the culturist expands cultured area in a large number, constantly sets up the raft frame quantity in unit area simultaneously, makes the greater coasting area bivalve raft cultivation present unordered excess load cultivation state.Particularly at enclosed bay, the overstocked mariculture area water that obviously causes of cultivation density flows through slowly, causes shellfish bait availability to reduce, the accumulation of shellfish metabolic waste, and the water body dissolved oxygen is not enough, and weakens the effects such as suspension, movement of the biological deposition of culturing area.The deterioration of water quality environment makes cultivated shellfish be in for a long time " inferior health " state, and causes local sea area shellfish disease serious, and scallop, oyster, mussel etc. are extensive dead.In addition, be subjected to multiple impacts the such as pollution from land-based sources source and commercial development, the immediate offshore area ecotope is subject to heavy damage, and seawer quality descends, frequent occurrence, and the economic loss that shellfishery every year causes because of red tide is more than 100,000,000 yuan.Therefore, in the urgent need to raft culture is moved to the deep-sea from the coastal waters, to seek better breeding environment, reduce the loss of producing.But after leaving the shielding of seashore on continent or island, waves whipped up by the wind rolled turbulently for the zone, deep-sea, and the stormy waves that the raft culture of shellfish need to overcome sea area itself impacts, and could enlarge the cultivation scale, the raising productivity effect.And according to Wave Theory, wave height increases with the equal difference of the depth of water and the specific damping such as is, and therefore culturing raft is deposited to the certain depth water layer, can reduce the impact of sea area stormy waves, but the shellfish culture raft of current main-stream design is reasonable not, complex operation during its lifting, waste time and energy and effect not good enough.
In addition, in Coastal Areas of South China such as China Guangdong, Fujian, the bivalve raft cultivation industry is with considerable scale, the kinds such as main oyster culture, abalone, and wherein the abalone output in Fujian is over the abalones such as Liaoning, Shandong tradition producing region.But the typhoon of the South China coastal and heavy rain bring about great losses all for the raft culture industry every year.Its reason has two: the first, and summer, typhoon often caused the breeding facility heavy damage, and aquaculture organism is suffered heavy losses; The second, spring and summer frequent continuous rainstorm, the time have flood to enter the sea, often cause coastal waters superficial water salinity rapid drawdown, cause the aquaculture organism mortality, but the lower layer of water salinity is generally more stable.In addition, the bad adaptability of the cultivation such as abalone, oyster kind to high temperature, often have in the south cultivation difficulty and the serious problem of seasonal disease of aestivating, cause the shellfish survival rate low, if can effectively extend the vegetative period of most shellfishes and improve the cultivation survival rate in the profundal zone cultivation, improve culture benefit.Therefore, exploitation is applicable to the raft culture technology in pool, deep-sea, overcomes the bad weather phenomenon to the impact of shellfish culture, and the Coastal Areas of South China shellfish culture is had important practical value.
Based on above background, exploitation has effective opposing stormy waves, the easy bivalve raft cultivation facility of implementation and operation, opens up new breeding spaces, and explores new raft culture mode, particularly in the shellfishery of the South China coastal, has boundless prospect in China's Coastal Areas.
The utility model content
The purpose of this utility model is to provide a kind of wind wave resistance liftable bivalve raft cultivation device, can realize rising and the decline of culturing raft in seawater, and simple in structure, easy to operate.
The purpose of this utility model is achieved through the following technical measures:
a kind of wind wave resistance liftable bivalve raft cultivation device, comprise be used to the main rope of the cultivation that keeps hanging the shellfish culture object and several and evenly tiing at the ball float that cultivates on main rope, the two ends fag end of the main rope of described cultivation all is connected with a depth adjuster that is used for the main rope of lifting cultivation, described depth adjuster comprises floating drum, the first depth adjustment rope, the second depth adjustment rope and be used for fixedly cultivator at marine heavy stone roller, described floating drum is floated on the sea level, the heavy seabed that is placed in of heavy stone roller, described the first depth adjustment rope, one end fag end of the second depth adjustment rope and the main rope of cultivation links together, after described the second depth adjustment rope passes the top ring of heavy stone roller, with the first depth adjustment rope respectively activity tie on floating drum and leave the adjusting ran, adjusting ran by the first depth adjustment rope and the second depth adjustment rope in two depth adjusters of folding and unfolding, the main rope of described cultivation is in marine rising or decline.
For fear of rocking of utility model cultivator, realize stable rising or the decline of the main rope of cultivation, in described two depth adjusters, the second depth adjustment rope is in the top ring of heavy stone roller and cultivates on ran between main rope, is all the weight that hangs with for tension cultivation main rope, the first depth adjustment rope and the second depth adjustment rope.
In order to prevent that the middle part ran that cultivates main rope from floating because of factors such as waves or sinking, guarantee to cultivate main rope maintenance level, described cultivator also comprises for the middle part adjuster that keeps the main rope level of cultivation; Described middle part adjuster comprises the foam floating block, cultivates the middle part depth adjustment rope of main rope middle part ran sinking and the middle part weight that floats for ran in the middle part of the main rope of prevention cultivation for prevention, described foam floating block is floated on the sea level, the top ran activity of described middle part depth adjustment rope is tied on the foam floating block, the middle part ran of middle part depth adjustment rope is tied on the middle part ran of the main rope of cultivation, and described middle part weight is to hang on the lower end fag end of middle part depth adjustment rope.
Adjust highly with convenient for the adjustable height that can accurately understand the main rope of cultivation, described middle part depth adjustment rope is provided be used to the reference mark that reads the main rope adjustable height of cultivation.
In order to improve the stability of the utility model cultivator, the buoyancy that the floating drum of described two depth adjusters produces be the gross buoyancy that produces of described several ball floats twice or more than.
A kind of embodiment as utility model, described floating drum is provided with the port collar that connects the upper and lower surface of floating drum, the upper surface of described floating drum is provided with retainer ring, described the first depth adjustment rope and the second depth adjustment rope pass the floating drum upper surface by the port collar, and activity is tied on retainer ring respectively.
In order to adjust more accurately the adjustable height of the main rope of cultivation, be equipped with on the adjusting ran of the first depth adjustment rope and the second depth adjustment rope in described two depth adjusters be used to reading the long reference mark of depth adjustment rope withdrawing rope.
Compared with prior art, bivalve raft cultivation device of the present utility model has following beneficial effect:
The first, the utility model is realized rising and the decline of the main rope of cultivation in seawater by depth adjuster, has higher capacity of anti-storm;
The second, the depth adjuster in the utility model is comprised of floating drum, heavy stone roller and two depth adjustment ropes, and this forms stabilized structure and easy to process, balance and the good stability of the utility model cultivator under seawater stormy waves environment;
The 3rd, operation is simple for the utility model cultivator, and operating personnel only need two depth adjustment ropes of folding and unfolding and with reference to the reference mark on the depth adjustment rope of middle part, can adjust exactly the main rope of cultivation in the marine degree of depth;
The 4th, the utility model cultivator is easy to maintenance, only needs emphasis to safeguard that each depth adjustment rope and the keg float structure of the main rope end of cultivation get final product.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the shellfish culture string hanging culture structural representation of the main rope of the utility model embodiment one cultivation when being in the floating state;
Fig. 2 is the shellfish culture string hanging culture structural representation of the main rope of the utility model embodiment one cultivation when being in the dive state;
Fig. 3 is the shellfish cultivation hanging on the raft structural representations of the main ropes of the utility model embodiment two cultivation when being in the floating state;
Fig. 4 is the shellfish cultivation hanging on the raft structural representations of the main ropes of the utility model embodiment two cultivation when being in the dive state;
In figure, 1 is the main rope of cultivation; 2 is ball float; 3 is floating drum; 3a is the port collar; 3b is retainer ring; 4 is the first depth adjustment rope; 5 is the second depth adjustment rope; 4a and 5a are respectively first, second depth adjustment ran; 6 are heavy stone roller; 6a is the heavy top ring of cutting or polish jade with an emery wheel; 7 is weight; 8 is the foam floating block; 9 is middle part depth adjustment rope; 10 is the middle part weight.
Embodiment
as depicted in figs. 1 and 2, wind wave resistance liftable bivalve raft cultivation device of the present utility model, comprise be used to the main rope 1 of the cultivation that keeps hanging the shellfish culture object and several and evenly tiing at the ball float 2 that cultivates on main rope 1, the two ends fag end that cultivates main rope 1 all is connected with a depth adjuster that is used for the main rope 1 of lifting cultivation, depth adjuster comprises floating drum 3, the first depth adjustment rope 4, the second depth adjustment rope 5 and be used for fixedly cultivator at marine heavy stone roller 6, floating drum 3 is floated on the sea level, the heavy seabed that is placed in of heavy stone roller 6, the first depth adjustment rope 4, one end fag end of the second depth adjustment rope 5 and the main rope 1 of cultivation links together, after the second depth adjustment rope 5 passes the top ring 6a of heavy stone roller 6, with the first depth adjustment rope 4 respectively activity tie on floating drum 3 and leave and regulate ran 5a and 4a, adjusting ran 5a and 4a by the first depth adjustment rope 4 and the second depth adjustment rope 5 in two depth adjusters of folding and unfolding, cultivate main rope 1 in marine rising or decline.
Wherein, cultivating main rope 1, can to select length be the stalk rope of 50 ~ 100m, difference according to the cultivation object, can select shellfish culture cage or cultivation string to keep hanging, and hang over equably on the main rope 1 of cultivation, cultivation later stage shellfish culture cage or the weight of cultivation string in water should be a little less than 2 gross buoyancies that can provide of ball float.The material of above-mentioned each ball float 2 can be used flexibly, adopts the vinyon material better; Floating drum 3 is selected the high-molecular polythene material, can customize separately the other materials of also can suiting measures to local conditions to select; The heavy stone roller 6 optional cement concrete materials of using; The top ring 6a of heavy stone roller 6 can select stainless steel material.In addition, for bringing into play the superiority of this cultivator, the desirable depth of water of mariculture area should be greater than 10m.The dive in water layer of the main rope 1 of cultivation in the utility model can effectively reduce the impact of stormy waves under typhoon climate, amplitude peak ground improves the capacity of anti-storm of bivalve raft cultivation device, be conducive to reduce the loss that the severe sea condition such as typhoon during coastal cultivation user cultivation, heavy rain, high temperature and red tide cause production, reduce production costs, improve shallow water along the coast availability, have good popularization applicability.
For fear of rocking of utility model cultivator, realize stable rising or the decline of the main rope of cultivation, in above-mentioned two depth adjusters, the second depth adjustment rope 5 is in the top ring 6a of heavy stone roller 6 and cultivates on ran between main rope 1, is all the weight 7 that hangs with for tension cultivation main rope 1, the first depth adjustment rope 4 and the second depth adjustment rope 5.Power by weight 7 tenesmus makes the first depth adjustment rope 4, the second depth adjustment rope 5 and cultivates main rope 1 and is in the tension stress, can avoid rocking of the utility model cultivator, realizes stable rising or the decline of the main rope 1 of cultivation.
In order to prevent that the middle part ran that cultivates main rope 1 from floating because of factors such as waves or sinking, guarantee to cultivate main rope 1 maintenance level, cultivator also comprises for the middle part adjuster that keeps main rope 1 level of cultivation; The middle part weight 10 that the middle part adjuster comprises foam floating block 8, is used for stoping the middle part depth adjustment rope 9 of the main rope 1 middle part ran sinking of cultivation and is used for stoping the main rope 1 middle part ran floating of cultivation, foam floating block 8 is floated on the sea level, the top ran activity of middle part depth adjustment rope 9 is tied on foam floating block 8, the middle part ran of middle part depth adjustment rope 9 is tied on the middle part ran of the main rope 1 of cultivation, and middle part weight 10 is to hang on the lower end fag end of middle part depth adjustment rope 9.The length of middle part depth adjustment rope 9 in water should make the main rope 1 of cultivation be in level at ordinary times, and after treating that the depth of water determines, middle part depth adjustment rope 9 is tied a knot long with static line on foam floating block 8.
In addition, weight 7 of the present utility model and middle part weight 10 can be selected the materials such as sand hill, stone or cement concrete; Each depth adjustment rope rope body in the utility model can be selected the polyethylene material, and the first depth adjustment rope 4 and the second depth adjustment rope 5 should be thicker, to guarantee load-bearing and friction resistant; And middle part depth adjustment rope 9 can be slightly thin.
Adjust highly with convenient for the adjustable height that can accurately understand the main rope 1 of cultivation, middle part depth adjustment rope 9 is provided be used to the reference mark that reads main rope 1 adjustable height of cultivation.
In order to improve the stability of the utility model cultivator, the buoyancy that the floating drum 3 of two depth adjusters produces be several ball floats 2 generations gross buoyancy twice or more than.
In addition, floating drum 3 can arrange the port collar 3a that connects floating drum 3 upper and lower surfaces, the upper surface of floating drum 3 arranges retainer ring 3b, and the first depth adjustment rope 4 and the second depth adjustment rope 5 pass floating drum 3 upper surfaces by port collar 3a, and activity is tied on retainer ring 3b respectively.Wherein the port collar 3a of floating drum 3 can select stainless steel material.
In order to adjust more accurately the adjustable height of the main rope 1 of cultivation, be equipped with on the adjusting ran 5a of the first depth adjustment rope 4 and the second depth adjustment rope 5 and 4a in two depth adjusters be used to reading the long reference mark of depth adjustment rope withdrawing rope.
Verified effect of the present utility model below by two embodiment:
Embodiment one
As shown in Figures 2 and 3, cultivate main rope 1 and select polyethylene rope, length 100m, before and after annual January, evenly hang Pacific oyster (Crassostrea gigas) cultivation string, oyster string spacing 25cm, every string oyster 1.0m establishes 8 shells of collecting seedling, 12 spats of each shell.
Pacific oyster is wide salt, eurythermic shellfish, have that individuality is large, growth is fast, output is high, adaptable characteristics, southern sea area Pacific oyster generally passes through many cultivation half a year, can gather in the crops to annual September, high monthly growth by the 9.0～10.0mm of shell, survival rate is between 80%～95%; Weight is generally 60 ~ 70g/ piece, and the weight of cultivation main rope 1 and the shell of collecting seedling is counted, and the gross buoyancy that ball float 2 provides is estimated and is 2500kg.Take can provide 12.5kg buoyancy/plastic floating ball as example, need 200 plastic floating balls 2 of bondage, the rest may be inferred.
According to design, the buoyancy that keg float 3 provides should be 2*2500kg, and namely each keg float 3 provides the buoyancy of 2500kg.The weight of heavy stone roller 6 is elected 1000kg as, and the weight of weight 7 is 50kg.
The top ring 6a of heavy stone roller 6 and the port collar 3a of keg float 3 adopt stainless steel material, and keg float 3 is the high-molecular polythene material, and middle the perforation is tailor-made by producer.The first depth adjustment rope 4 and the second depth adjustment rope 5 are thicker, are 3000; Middle part depth adjustment rope 9 is thinner, is 220.
The reservation rope length of the first depth adjustment rope 4 and the second depth adjustment rope 5 depending on the actual sea situation depth of water guarantee that culturing raft can dive arrive desired depth.
In the present embodiment, if need to reduce the cultivation water layer of culturing raft, can first unclamp the middle part depth adjustment rope 9 at cultivation main rope 1 middle part to desired depth, tighten is fixed, unclamp one by one again the first depth adjustment rope 4 on the retainer ring 3b that cultivates main rope 1 two ends, the second depth adjustment rope 5 of ring on 3b that be strained and fixed, during to the suitable depth of water, tighten is fixing gets final product.As need rising culturing raft cultivation water layer, operation is opposite with said sequence.
Because southern sea area typhoon season is 6 ~ September, therefore before arriving, typhoon culturing raft should be down to alap water layer at least, again culturing raft is risen to the sea when running can be gathered in the crops product when normally or not needing to fill the gaps with seedlings by the time as breeding facility.
In the present embodiment, the time culturing raft is raise to results, the per mu yield of the Pacific oyster that obtains is 2150 ~ 2765kg, is greatly improved when not adopting wind wave resistance liftable bivalve raft cultivation device of the present utility model.
Embodiment two
As shown in Figure 3 and Figure 4, the present embodiment two adopts wind wave resistance liftable bivalve raft cultivation device of the present utility model to realize the mariculture of Bao.Cultivate main rope 1 and select polyethylene rope, length 80m evenly hangs take 1.5m as the interval and supports the Bao cage, adopts 4 layers of cage of three-dimensional dish combined type.Vinyl disc diameter 50cm, the adjacent disc layer is connected and fixed by plastic bushing and Steel Bolt.Dish spacing 20-30cm, cage wall cover has the polyethylene etting with slide fastener.
When putting seedling, can put above 150 left and right of abalone of the long 3cm of shell in a suitable place to breed for every layer, four layers, a cage amounts to 600.The bait kind is mainly sea-tangle, fragrant plant mentioned in ancient texts.Throw something and feed weekly 1 time, feeding volume is ingested situation by abalone and is decided, generally by 50-70% of abalone body weight.During lower than 10 ℃, feeding volume is 30% of body weight when water temperature.
After stone roller 6 sinkings of sinking are good, with keg float 3 and the first depth adjustment rope 4 be connected the device connection such as depth adjustment rope 5.After cultivating again main rope 1 and tying up ball float 2 and Bao cage, end and the first depth adjustment rope 4 be connected depth adjustment rope 5 and be connected respectively, and middle part depth adjustment rope 9 is set.After being adjusted to correct position as required, the first depth adjustment rope 4 and the second depth adjustment rope 5 are separately fixed at the position of retainer ring 3b.
In this example, if need to reduce the cultivation water layer of culturing raft, can first unclamp the middle part depth adjustment rope 9 at cultivation main rope 1 middle part to desired depth, tighten is fixed, unclamp one by one again the first depth adjustment rope 4 on the retainer ring 3b that cultivates main rope 1 two ends, the second depth adjustment rope 5 of ring on 3b that be strained and fixed, during to the suitable depth of water, tighten is fixing gets final product.As need rising culturing raft cultivation water layer, operation is opposite with said sequence.
After young Bao enters the sea, need to support to commercial specification through the time of two-and-a-half years.Under normal circumstances, weekly culturing raft is risen to the sea and carry out feeding 1 time.
Except normal feeding, culturing raft should sink down into than profundal zone in following season:
Be the fouling organism high-incidence season 3 ~ April, fouling organism spread unchecked the obstruction that easily causes cylinder mould, affect the water penetration of Bao cage, so during, the sinking of culturing raft is conducive to avoid adhering in a large number of fouling organism, guarantees the good growth of Bao;
Be the rainy season of the South China coastal 4 ~ May, and easily Flooding, cause coastal waters superficial water salinity to water down, and Bao is difficult to growth or survives lower than 27 ‰ o'clock in salinity.Therefore between flood period, culturing raft is fallen near the seabed, the required salinity of Bao Shengchang is changed less, do not affect its growth;
Mostly be southern sea area typhoon season 6 ~ September, therefore culturing raft should be down near the seabed before typhoon arrives, to avoid stormy waves, the impact of culturing raft is caused the cultivation loss.
In on February 28,28 days to 2009 November in 2007, utilize wind wave resistance elevation (over-and-under) type raft frame system provided by the present invention to carry out hybridization Bao cylinder mould cultivation pilot scale in the Nanao County, Guangdong Province.Duration of test seawater surface salinity is 26.18 ~ 32.74, and surface temperature is 15.5 ~ 29.0 ℃, and seawater transparency is 1.0 ~ 1.6m.Result shows, utilizing average shell length is the young Bao of 2.1g for 21.8mm, average individual weight, reaches the long 75.9mm of average shell, the average large standard commodities Bao of individual weight 52.9g through cultivation in 16 months; The cultivation survival rate is 70%, approximately shorten 2 ~ 3 months than industrial aquaculture vegetative period, the cost of forming one kilogram of commodity Bao is only 51 yuan, be starkly lower than 90 yuan of industrial aquaculture, its input-output ratio is 1:1.95, and benefit obviously is greatly improved when not adopting wind wave resistance liftable bivalve raft cultivation device of the present utility model.
Embodiment of the present utility model is not limited to this; under the above-mentioned basic fundamental thought of the utility model prerequisite; according to modification, replacement or the change to the utility model other various ways that content is made of the ordinary skill knowledge of this area and customary means, all within the utility model rights protection scope.
Claims (7)
1. wind wave resistance liftable bivalve raft cultivation device, comprise be used to the main rope of the cultivation that keeps hanging the shellfish culture object (1) and several and evenly tiing at the ball float (2) that cultivates on main rope (1), it is characterized in that: the two ends fag end of the main rope of described cultivation (1) all is connected with a depth adjuster that is used for the lifting main rope of cultivation (1), described depth adjuster comprises floating drum (3), the first depth adjustment rope (4), the second depth adjustment rope (5) and be used for fixedly cultivator at marine heavy stone roller (6), described floating drum (3) is floated on the sea level, the heavy seabed that is placed in of heavy stone roller (6), described the first depth adjustment rope (4), one end fag end of the second depth adjustment rope (5) and the main rope of cultivation (1) is fixed tightly in together, after described the second depth adjustment rope (5) passes the top ring (6a) of heavy stone roller (6), with the first depth adjustment rope (4) respectively activity tie to go up and leave at floating drum (3) and regulate ran (5a and 4a), adjusting ran (5a and 4a) by the first depth adjustment rope (4) and the second depth adjustment rope (5) in two depth adjusters of folding and unfolding, reach the main rope of described cultivation (1) in marine rising or decline.
2. wind wave resistance liftable bivalve raft cultivation device according to claim 1, it is characterized in that: in described two depth adjusters, the second depth adjustment rope (5) is on the top ring (6a) and the ran between the main rope of cultivation (1) of heavy stone roller (6), is all the weight (7) that hangs with for tension cultivation main rope (1), the first depth adjustment rope (4) and the second depth adjustment rope (5).
3. wind wave resistance liftable bivalve raft cultivation device according to claim 1 and 2 is characterized in that: described cultivator also comprises for the middle part adjuster that keeps cultivation main rope (1) level, described middle part adjuster comprises foam floating block (8), for the middle part depth adjustment rope (9) of ran sinking in the middle part of the prevention main rope of cultivation (1) and the middle part weight (10) that floats for ran in the middle part of the prevention main rope of cultivation (1), described foam floating block (8) is floated on the sea level, the top ran activity of described middle part depth adjustment rope (9) is tied at foam floating block (8) and is gone up and reserve certain-length adjusting ran (9a), the middle part ran of middle part depth adjustment rope (9) is tied on the middle part ran of the main rope of cultivation (1), described middle part weight (10) is to hang on the lower end fag end of middle part depth adjustment rope (9).
4. wind wave resistance liftable bivalve raft cultivation device according to claim 3 is characterized in that: described middle part depth adjustment rope (9) is provided be used to the reference mark that reads cultivation main rope (1) adjustable height.
5. wind wave resistance liftable bivalve raft cultivation device according to claim 1 and 2 is characterized in that: the buoyancy that the floating drum of described two depth adjusters (3) produces be the gross buoyancy that produces of described several ball floats (2) twice or more than.
6. wind wave resistance liftable bivalve raft cultivation device according to claim 1 and 2, it is characterized in that: described floating drum (3) is provided with the port collar (3a) that connects the upper and lower surface of floating drum (3), the upper surface of described floating drum (3) is provided with retainer ring (3b), described the first depth adjustment rope (4) and the second depth adjustment rope (5) pass floating drum (3) upper surface by the port collar (3a), and activity is tied on retainer ring (3b) respectively.
7. wind wave resistance liftable bivalve raft cultivation device according to claim 1 and 2 is characterized in that: be equipped be used to reading the long reference mark of depth adjustment rope withdrawing rope on the adjusting ran (5a and 4a) of the first depth adjustment rope (4) and the second depth adjustment rope (5) in two depth adjusters at the main rope of described cultivation two ends.
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| CN108174807A (en) * | 2017-12-27 | 2018-06-19 | 广西正五海洋产业股份有限公司 | The Oyster in Raft Culture cultural method of wind and wave resistance |
| CN108684588A (en) * | 2018-05-12 | 2018-10-23 | 苑春亭 | A method of with hard attachment base marine raft culture oyster |
| CN109548642A (en) * | 2018-12-20 | 2019-04-02 | 中国水产科学研究院渔业机械仪器研究所 | A kind of laminaria culture device be easily managed, harvest, drying and its working method |
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2012
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