CN101617637A - Net cage for sea farming - Google Patents

Net cage for sea farming Download PDF

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Publication number
CN101617637A
CN101617637A CN200810128446A CN200810128446A CN101617637A CN 101617637 A CN101617637 A CN 101617637A CN 200810128446 A CN200810128446 A CN 200810128446A CN 200810128446 A CN200810128446 A CN 200810128446A CN 101617637 A CN101617637 A CN 101617637A
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China
Prior art keywords
sea
net cage
net
sea farming
wire
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CN200810128446A
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CN101617637B (en
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川中良纪
森纯
伊藤贵则
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Daiwa Technology Co ltd
Sakura Tech Corp
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SIGUO DAHE JINWANG CO Ltd
Sakura Tech Corp
Hanwa Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

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Abstract

The invention discloses a net cage for sea farming. In a net cage for sea farming for farming fish and shellfish, the net cage for sea farming is likely to change volume violently and swing and marine organisms are easy to adhere as a chemical fiber net has small rigid and is light; in addition, even under the condition of using a sea water tolerance metal wire net, a plurality of net cages for sea farming are likely to change volume and swing in the exiting hanging structure. In the invention, a floater (4) is arranged on tubing (2a, 2b and 2c) connected with a truss structure in an attached way to form an upper frame (2), a lower frame (3) formed by the tubing is arranged correspondingly to the upper frame (2) ; the lower frame (3) and the upper frame (2) are used to expand a cage body (8) formed by a metal wire net (5) composed of a side surface part (8a) and a bottom surface part (8b) in the sea; meanwhile, the metal wire net (5) is formed by weaving metal wires (6) having sea water tolerance and large specific gravity.

Description

Net cage for sea farming
Technical field
[0001] the present invention relates to impale certain sea area and in this net, carry out the structure of the net cage for sea farming that fish and shellfish cultures with net.
Background technology
[0002] before, relevant the frame that is made of tubing is swum near the seawater face, maintain the net (hereinafter referred to as " suspension construction ") at the end from this sash hanger, the technology of the net cage for sea farming of breed fish is by known (for example with reference to patent documentation 1) in this net.And, usually identical as net with fishing net with sea water resistance, be to use the net (hereinafter referred to as " chemical fibre net ") that chemical fibres such as nylon and polypropylene are woven into, try hard to the lightweight of net cage for sea farming.
Patent documentation 1: TOHKEMY 2001-218538 communique
Summary of the invention
Invent problem to be solved
[0003] still, chemical fibre net as described above, though in light weight, folding easily, the good work of carrying and assembling net cage for sea farming etc., rigidity is low, can not give enough form retentivities and stability is set net cage for sea farming.Therefore, exist following problem, promptly, owing to reasons such as current, trend, waves, rapid volume-variation and swing take place in net cage for sea farming easily, the fish of supporting is subjected to overstimulation, the bait that spues and once preying on, degradation under the feed efficiency not only hinders and grows normally, and because consider above-mentioned volume-variation, must put mantissa in a suitable place to breed and set fewly, so production efficiency is suppressed lowly, and then, net cage for sea farming can only be arranged near near the inland sea of wave calmness the breed difficulty in the peace and quiet seawater in coastal waters.
[0004] in addition, in the chemical fibre net, adhere to marine organisms such as sea grass, shellfish easily, thereby mesh diminishes, the trafficability characteristic variation of maritime interior waters between short-term, or the intensity of chemical fibre net self is low, is swum in damage such as wood or shark in the water easily.Therefore, algae processing and frequent draping be need prevent, the manufacturing cost that causes net cage for sea farming and the problem of maintenance cost increase existed.
[0005] and then, replace such chemical fibre net, also can enumerate the gauze that forms by the wire that will be woven into the high sea water resistance of strength ratio chemical fibre is used for net cage for sea farming and guarantees the form retentivity and prevent sea grass, shellfishes etc. adhere to and damaged countermeasure, but as in the past, the suspension construction that near the frame that is swimming making the seawater face hangs and maintenance is netted, at current, trend, under the big situation such as wave, a lot of net cage for sea farming generation volume-variation exist aforesaid such, can not avoid feed efficiency to descend reliably, obstruction is grown, the problem that production efficiency descends.
In order to solve the means of problem
[0006] in order to solve above-mentioned problem, present inventors etc. have carried out wholwe-hearted research, found that, as net cage for sea farming, form retentivity and the viewpoint that stability is set from net cage for sea farming, following structures is only, promptly, heavy lower frame is installed in the bottom surface sections of net, the side surface part that relies on this lower frame to draw in the net is downwards opened and is established etc., give tension force (being " open and establish structure ") to net, on this basis, will be assembled into on-deformable shape by the gauze that sea water resistance height and heavy wire constitute to call such structure in the following text.
[0007] promptly, in technical scheme 1 of the present invention, a kind of net cage for sea farming is provided, this net cage for sea farming is the net cage for sea farming that impales certain sea area, carries out the breed of fish and shellfish in this net with net, it is characterized in that, float is attached on the tubing that is being linked by truss structure forms upper ledge, relatively dispose the lower frame that constitutes by tubing with this upper ledge, the casing of the gauze system that will constitute by side surface part and bottom surface sections by this lower frame and above-mentioned upper ledge open be located at marine, this gauze braiding sea water resistance and heavy wire and form.
In technical scheme 2, above-mentioned wire covers plating Zn layer and constitutes on iron wire, and simultaneously, the adhesion amount of this plating Zn layer is 350~700g/m 2
In technical scheme 3, above-mentioned wire is to comprise that Al is that 8~15wt% and the Zn that contains inevitable composition are that the plating Zn-Al alloy layer of 85~92wt% covers on the iron wire and constitutes, and simultaneously, the adhesion amount of this plating Zn-Al alloy layer is 350~700g/m 2
In technical scheme 4, above-mentioned wire is to adopt to comprise that Cu is that 63~67wt%, Sn are that 0.3~0.8wt%, Ni are that 0.1~0.7wt% and the Zn that comprises inevitable composition are the Cu alloy silk of 31~36wt%.
In technical scheme 5, the mesh of above-mentioned gauze directly is that the metal wire knitted ramify inside dimension of 2~5mm is that the rhombus of 20~70mm forms with silk.
The effect of invention
[0008] the present invention as above constitutes like that, so have effect shown below.
Promptly, according to technical scheme 1 of the present invention, because described net cage for sea farming is to impale certain sea area with net, in this net, carry out the net cage for sea farming of the breed of fish and shellfish, wherein, float is attached on the tubing that is being linked by truss structure forms upper ledge, relatively dispose the lower frame that constitutes by tubing with this upper ledge, the casing of the gauze system that will constitute by side surface part and bottom surface sections by this lower frame and above-mentioned upper ledge open be located at marine, this gauze braiding sea water resistance and heavy wire and form, so can be on the basis that constitutes the casing that makes net make on-deformable shape by upper and lower frames, give big tension force, simultaneously, by forming this net by heavy gauze, can make net cage for sea farming have high form retentivity and stability is set, even at current, trend, rapid volume-variation and swing also take place in the situation that wave etc. are big, net cage for sea farming hardly.Therefore, the fish of supporting can not be subjected to exceedingly stimulating, and the bait preyed on of can preventing from reliably to spue is eaten and then reduced feed efficiency and hinder and grow normally; And then, do not need to consider volume-variation, can set production efficiency high, net cage for sea farming can also be arranged on chopping coastal waters on this basis, can in peace and quiet seawater, culture.And then, gauze is because of compare marine organisms such as being not easy to adhere to sea grass, shellfish with the chemical fibre net, intensity is also high, so do not exist mesh diminish, between short-term maritime interior waters the trafficability characteristic variation and because of swimming in the situation that wood in the water or shark etc. damage, do not need to prevent algae processing and frequent draping, can reduce the manufacturing cost and the maintenance cost of net cage for sea farming.
[0009] according to technical scheme 2 of the present invention, because above-mentioned wire covers plating Zn layer on the iron wire and constitutes, simultaneously, the adhesion amount of this plating Zn layer is 350~700g/m 2So can guarantee the coating close attachment, prevent that sea water resistance from descending, simultaneously, can seek to reduce the needed maintenance cost of draping with prolonging during till consuming up to the coating on the iron wire, on this basis can also not draping during culturing, prevent the harmful effects such as anxiety that fish and shellfish is subjected to when moving replacing, can seek the raising of feed efficiency and healthy growth and grow.
[0010] according to technical scheme 3 of the present invention, because above-mentioned wire is to comprise that Al is that 8~15wt% and the Zn that contains inevitable composition are that the plating Zn-Al alloy layer of 85~92wt% covers on the iron wire and constitutes, simultaneously, the adhesion amount of this plating Zn-Al alloy layer is 350~700g/m 2, all good wire of processability when so sea water resistance and braiding can be provided.
[0011] according to technical scheme 4 of the present invention, because above-mentioned wire is to adopt to comprise that Cu is that 63~67wt%, Sn are that 0.3~0.8wt%, Ni are that 0.1~0.7wt% and the Zn that comprises inevitable composition are the Cu alloy silk of 31~36wt%, so can provide sea water resistance, particularly sterilization to prevent the good wire of algae property.
[0012] according to technical scheme 5 of the present invention, owing to the mesh of above-mentioned gauze is directly to be that the metal wire knitted ramify inside dimension of 2~5mm is that the rhombus of 20~70mm forms with silk, so can use the system net to be easy to the gauze of rhombus, correspondingly change the intensity of gauze and the size of mesh be provided with place, the kind of breeding fish and the size etc. of net cage for sea farming, can guarantee the trafficability characteristic of net maritime interior waters, simultaneously, prevent that the fish of supporting from escaping from mesh, can realize the purpose that the fish of supporting grows up healthy and sound and grows.
Description of drawings
[0047]
Fig. 1 is the overall perspective view of the integrally-built net cage for sea farming of expression net cage for sea farming of the present invention.
Fig. 2 is the part stereogram of upper ledge of the installation situation of expression buoyancy aid.
Fig. 3 is the amplification front view of gauze.
[symbol description]
[0048] 1: net cage for sea farming
2: upper ledge
2a, 2b, 2c: tubing
3: lower frame
4: float
5: gauze
6: wire
8: casing
8a: side surface part
8b: bottom surface sections
9: mesh
9a: mesh inside dimension
Embodiment
[0013] below, embodiments of the present invention is described.
Fig. 1 is the overall perspective view of integrally-built net cage for sea farming of expression net cage for sea farming of the present invention, and Fig. 2 is the part stereogram of upper ledge of the installation situation of expression buoyancy aid, and Fig. 3 is the amplification front view of gauze.
[0014] at first, according to Fig. 1 to Fig. 3 the structure of net cage for sea farming 1 of the present invention is described.
As shown in Figure 1, net cage for sea farming 1 is by constituting with lower member: upper ledge 2; Be attached to a plurality of buoyancy aids 4,4...... on this upper ledge 2; Top edge is installed in the side metal silk screen 5a on the upper ledge 2; Be installed in the lower frame 3 of the lower limb of this side metal silk screen 5a; Open the bottom surface gauze 5b that is located in this lower frame 3.
[0015] upper ledge 2 wherein by the first framework 2a, the second framework 2b of square a plurality of tubing of arranging with being seen as concentric shape from the top down, and the 3rd framework 2c constitute, the first framework 2a compares with the second framework 2b in the horizontal direction and is provided in the outside, and above-mentioned the 3rd framework 2c is provided in the top of this second framework 2b.
[0016] and, as shown in Figure 2, between the first framework 2a and the second framework 2b, between the second framework 2b and the 3rd framework 2c, and the 3rd framework 2c and the first framework 2a between, respectively by as the first fixed part 7a, the second fixed part 7b of tubing, and the 3rd fixed part material 7c by bindings such as welding, by these first fixed parts 7a, the second fixed part 7b, and the fixed part material 7 that constitutes of the 3rd fixed part material 7c form truss structure, truss structure has constituted the upper ledge 2 with high rigidity thus.
[0017] above-mentioned buoyancy aid 4 is that the foam styrene littler than sea water specific gravity is configured as columned parts, and the top of this buoyancy aid 4 is clamped between the above-mentioned first framework 2a and the second framework 2b by not shown installed part.In addition, this buoyancy aid 4 also can be that timber or inside are empty metal buckets or plastic containers etc., so long as can the structure of the enough buoyancy of net cage for sea farming 1 effect be got final product, is the parts that do not limited especially.
[0018] above-mentioned side metal silk screen 5a will after the rectangular gauze bending be configured as engaged at end the parts of square tube shape, the top edge of this side metal silk screen 5a is fixed on the second framework 2b of above-mentioned upper ledge 2 by not shown installed parts such as wire, simultaneously, fixing at the lower limb of side metal silk screen 5a tubing is being assembled into square lower frame 3.
[0019] and, rely on the weight of this lower frame 3, constituted and given opening of tension force usually downwards to above-mentioned side metal silk screen 5a and establish structure, open in the inboard of above-mentioned lower frame 3 and to establish bottom surface gauze 5b, and then, by being formed on by the gauze 5 that these side metal silk screen 5a and bottom surface gauze 5b constitute on the casing 8 that constitutes by above-mentioned upper and lower frames 2,3, by side surface part 8a and bottom surface sections 8b, gauze 5 can be constituted the parts that the distortion that produces because of external force had favorable rigidity.In addition,, generally use hot-dip Zn steel pipe as above-mentioned tubing, still, so long as heavy to a certain degree and the good structure of sea water resistance gets final product, its kind and size are not limited especially.
[0020] as shown in Figure 3, above-mentioned gauze 5, be to use known automatic metal silk screen braider to weave many one metal wires 6 arranged side by side in wave shapely, make the wire 6,6 of adjacency interweave at their bend 6a, 6a each other, form the gauze with diamond-mesh 95 of making net than hexagon gauze and curling gauze easily.
[0021] length (following is " mesh the inside dimension ") 9a on one side of the inboard of the silk footpath 6b of above-mentioned wire 6 and mesh 9, be to set according to the cultivating conditions such as place, the kind of breeding fish and size that are provided with of net cage for sea farming 1, but if possible, preferably the silk footpath is that 2~5mm, mesh inside dimension are 20~70mm.This be because, for silk footpath 6b, if silk footpath 6b not enough 2mm, then the intensity of gauze 5 wood or shark low, that gauze 5 is swum in the water easily damages, the fish that causes supporting escapes, so need carry out frequent draping; If but a silk footpath 6b surpasses 5mm, then the bending machining difficulty of wire 6, knitmesh difficulty, and too heavy, the operation when carrying and assembling net cage for sea farming etc. is bad.In addition, for mesh inside dimension 9a, if the not enough 20mm of mesh inside dimension, mesh just narrows down in then between short-term, and the trafficability characteristic variation of seawater need be prevented algae processing and frequent draping, if but the mesh inside dimension surpasses 70mm, then the fish of Yanging might escape from mesh 9.
[0022] promptly, the mesh 9 of above-mentioned gauze 5 directly is that to be woven into mesh inside dimension 9a be that the rhombus of 20~70mm forms for the wire 6 of 2~5mm with silk, so can use the system net to be easy to the gauze 5 of rhombus, with net cage for sea farming 1 be provided with that place, the kind of breeding fish and size etc. correspondingly change the intensity of gauze 5 and as the mesh inside dimension 9a of the size of mesh 9, the trafficability characteristic of the seawater in can guaranteeing to net, meanwhile, can prevent that the fish of supporting from escaping from mesh 9, can realize the purpose that the fish of supporting grows up healthy and sound and grows.
[0023] for the kind of above-mentioned wire 6, though limit especially,, on the basis of sea water resistance, heavy for well, preferably proportion is more than 5.This is because if the proportion of wire 6 is too small, then gauze 5 self is in light weight, because current, trend, wave etc., so gauze 5 is swung easily, the fish of supporting is subjected to exceedingly stimulating, degradation under the feed efficiency, the growth normally of foster fish can be hindered.As the wire of the sea water resistance of such light specific gravity, can enumerate the Ti silk, Ti alloy silk, Al silk, light metal silks such as Al alloy silk.In addition, even such light metal silk, can prevent to a certain extent that also above-mentioned gauze 5 from swinging though become the countermeasure that heavily waits by the weight of taking to make above-mentioned lower frame 3, but owing to use the high metal of price, so cause the manufacturing cost of gauze 5 to increase, be used to make weight to become the maximization etc. of heavy lower frame 3 easily.
[0024] promptly, impale certain sea area at the gauze 5 that is used as net, in this gauze 5, carry out in the net cage for sea farming 1 of breed of fish and shellfish, because will be attached to as the buoyancy aid 4 of float as the framework 2a that connects to the tubing of truss structure, 2b, 2c is last and form upper ledge 2, and relatively dispose the lower frame 3 that constitutes by tubing with this upper ledge 2, by this lower frame 3 and above-mentioned upper ledge 2, to be located at marine by 8 of the casings that the gauze 5 that side surface part 8a and bottom surface sections 8b constitute is made, simultaneously, this gauze 5 is braiding sea water resistance and heavy wires 6 and forming, so, can pass through upper and lower frames 2,3 make the casing 8 of on-deformable shape with gauze 5, and give it with big tension force, simultaneously, by this gauze 5 is formed by heavy gauze 5, can give the high form retentivity of net cage for sea farming 1 and stability is set, even at current, trend, under the big situation such as wave, rapid volume-variation and swing also can take place in net cage for sea farming 1 hardly.Therefore, the fish of supporting can not be subjected to exceedingly stimulating, degradation hinders normal growth to grow under the bait that can prevent from reliably to have preyed on because of spuing, the feed efficiency, and then, needn't consider volume-variation, can set production efficiency high, on this basis, net cage for sea farming 1 can also be arranged on chopping coastal waters, can be in peace and quiet seawater breeding.And then, gauze 5 is owing to be not easy to adhere to marine organisms such as sea grass, shellfish than chemical fibre net, intensity is also high, so do not exist because of the narrow down trafficability characteristic variation of between short-term maritime interior waters or damage of mesh 9 because of swimming in wood in the water or shark etc., do not need to prevent algae processing and frequent draping, the manufacturing cost of net cage for sea farming 1 and maintenance cost are reduced.
[0025] then, above-mentioned wire 6 is described.
In wire 6,, be preferably 350g/m to the plating Zn layer of iron wire enforcement, the adhesion amount of plating Zn-Al alloy layer 2Above 700g/m 2Below.
This be because, if will plate Zn layer, plating Zn-Al alloy be placed on marine, though then suppress to plate the corrosion of material iron wire by sacrificing antisepsis, if adhesion amount deficiency 350g/m 2Then coating can be use up by internal consumption between short-term, the replacement cycle of gauze shortens, the needed maintenance cost of draping increases, and, during the breed till fish and shellfish grows to the adult with commodity value in, needing under the situation of draping, because be accompanied by the mobile replacing of this draping, fish and shellfish can be subjected to harmful effects such as anxiety.On the other hand, if adhesion amount surpasses 700g/m 2, the then lip-deep coating close attachment of iron wire decline, crack etc. takes place and causes the part to be peeled off in coating when netting, and sea water resistance descends on the contrary.
[0026] in addition, the composition of above-mentioned plating Zn-Al alloy layer preferably, Al is 8~15wt%, the Zn that comprises inevitable composition is 85~92wt%.This be because, if the not enough 8wt% of Al containing ratio is then little by the effect of adding the sea water resistance that Al improves; On the other hand, if the Al containing ratio surpasses 15wt%, then the coating of Xing Chenging is hard and crisp, and processability descends, and during netting, crack etc. takes place coating easily.
[0027] in addition, the composition of above-mentioned Cu alloy silk preferably, Cu is 63~67wt%, Sn is 0.3~0.8wt%, Ni is 0.1~0.7wt%, the Zn that comprises inevitable composition is 31~36wt%.
[0028] for the Cu containing ratio, if not enough 63wt% then can not obtain good sea water resistance, if surpass 67wt%, then hot-workability descends, simultaneously, sea water resistance does not correspondingly improve along with the increase of Cu containing ratio yet, and the manufacturing cost of gauze rises on the contrary.In addition, if Cu alloy silk, because the effect of the Cu ion of stripping to seawater from the surface, can prevent that marine organisms such as sea grass, shellfish from adhering to, particularly, can all sterilize to the breeding seawater territory that is provided with net cage for sea farming 1, sterilization, prevent that skin worm (Ha ダ worm) etc. from parasitizing fish such as ocyurus chrysurus, Zhang Xiong.
[0029] for Sn rate is arranged, if not enough 0.3wt% then can not fully improve sea water resistance, abrasion resistance and intensity; If surpass 0.8wt%, then these sea water resistances, abrasion performance and intensity correspondingly do not improve along with the increase of Sn containing ratio, and hot-workability, cold-workability all descend on the contrary.
[0030] for the Ni containing ratio, if not enough 0.1wt% then can not fully improve sea water resistance, abrasion resistance and intensity; If surpass 0.7wt%, then these sea water resistances, abrasion performance and intensity correspondingly do not improve along with the increase of Ni containing ratio, and the manufacturing cost of gauze rises on the contrary.
[0031] embodiment
Below, embodiments of the invention are described.
At first, describe to each wire with by the method that this each wire is made net cage for sea farming.
As shown in table 1, the plating Zn iron wire that in the embodiment of the invention 1~5, uses, be after soft iron silk material (the JIS G3505 of Japanese Industrial Standards) annealing, after implementing pre-treatment, just be immersed in to dissolve and plate in the Zn pond, by what make by the adhesion amount of throttling arrangement adjustment plating Zn layer with silk footpath 4mm.As for the plating Zn-Al iron wire that uses in the embodiment of the invention 6~12 too, be by after soft iron silk material (the JIS G3505 of the Japanese Industrial Standards) annealing with silk footpath 4mm, after implementing pre-treatment, just be immersed in the plating Zn-Al alloy pond, by what make by the adhesion amount of throttling arrangement adjustment plating Zn-Al layer.
[0032] the Cu alloy silk about in the embodiment of the invention 13~16, using, be to make by following mode, promptly, the Cu alloy that dissolves various compositions by high frequency dissolving stove is cast columned ingot bar, the surface of this ingot bar is cut obtained the processing ingot bar after, this processing ingot bar is heated, directly push by extruder then, make the bar-shaped blank of diameter 10mm,, be worked into silk always directly for till the 4mm after this by carrying out cold-drawn and annealing repeatedly.
[0033] in addition, the wire that in comparative example 17, comparative example 18, comparative example 19, uses, be respectively with the identical wire of wire that in the invention described above example 1, example of the present invention 6, example of the present invention 13, uses.The Ti silk that uses in comparative example 20, comparative example 21, the silk footpath is 4mm, is equivalent to the Ti silk of the JIS H4670 of Japanese Industrial Standards.And the chemical fibre silk that uses in comparative example 22, comparative example 23 is the raw material thread twisted of polyethylene system to be made the silk footpath be the chemical fibre silk of 5mm.
[0034] wire of making as above as previously mentioned, by the braiding of automatic metal silk screen braider, makes the wire of adjacency interweave at their bend each other, does the gauze that the ramify inside dimension is the rhombus of 50mm.For the chemical fibre silk, also by the automatic knitting machine braiding, doing the ramify inside dimension equally is the chemical fibre net of the rhombus of 50mm.
[0035] and, about example 1~16 of the present invention, comparative example 20, comparative example 22 be, as above-mentioned, do, make to open a net cage for sea farming 1 of establishing structural type.On the other hand, as for comparative example 17~19, comparative example 21, comparative example 23, be in above-mentioned net cage for sea farming 1, only to hang nets and to make the net cage for sea farming of suspended structure type in the mode that the lower limb of net is not installed heavy lower frame 3 from upper ledge 2.In addition, these two types, as shown in Figure 1, net is all made high by 10, wide 11 and is the cube of equal length 10m.
[0036] then, test method and its metewand to various characteristics describes.
Net cage for sea farming that will be by the above-mentioned example of the present invention 1~16 of doing manufacturing like that, comparative example 17~23 the inland sea actual be immersed in carried out in the seawater being provided with after, keep this state to place unchangeably, in the process of this placement, estimated the form retentivity of net cage for sea farming and stability has been set.In addition, net cage for sea farming fixes on marine fixed buoy and seabed by not shown hawser system.
[0037] as shown in Figure 1, one end of hawser is installed in four jiaos each lower corner 13 that is positioned at lower frame 3, the other end of this hawser is connected near the not shown buoy that swims the seawater face, measure this buoy from be positioned at above-mentioned lower corner 13 directly over the distance (following conduct " lower corner shift length ") of upper corner 12 displacements, with the mean value of this lower corner shift length index as the form retentivity of net cage for sea farming.In addition, also measure the distance (following conduct " upper corner shift length ") of above-mentioned upper corner 12 displacement when being provided with, with the mean value of this upper corner shift length the index that stability is set as net cage for sea farming.And, to the form retentivity, stability is set, all be designated as ◎ (good) with the not enough 0.5m of shift length, surpass 0.5m but not enough 1m is designated as zero (well), surpass 1m but not enough 2m is designated as △ (some bad), surpass 2m to be designated as * mode of (bad) estimates.
[0038] through after 1 year, each net cage for sea farming 1 of pull-up from seawater cuts out wire from network and line is observed etch state, as the index of sea water resistance.And, under the situation of the wire that has carried out coating (example 1~12 of the present invention, comparative example 17, comparative example 18), surpass 300g/m to need only residual adhesion amount 2Just be designated as ◎, though the not enough 300g/m of residual adhesion amount 2If but residually on whole of coating matrix had coating just to be designated as zero, though exposing the mode that the not enough 0.8mm of the corrosion depth of this exposed portions serve then is designated as △, coating matrix at least a portion would estimate.Under the situation of the wire that does not carry out coating (example 13~16 of the present invention, comparative example 19~21), with as long as the not enough 0.2mm of corrosion depth just is designated as ◎, corrosion depth surpasses 0.2mm but not enough 0.4mm is designated as the mode of O estimates.Under the situation of chemical fibre silk (comparative example 22, comparative example 23), to estimate as long as disrumpent feelings less than 1 achievement of base silk is designated as the mode of ◎.
[0039] in addition, for the wire that has carried out coating (example 1~12 of the present invention, comparative example 17, comparative example 18), with the crack situation occurred of the coating surface among the bend 6a of visualization after, as the index of coating processability by the netting of automatic metal silk screen braider.And, estimate in such a way, promptly, to with the naked eye fail to identify in the crannied situation of coating surface and be designated as ◎, to with the naked eye can identify limpingly in the crannied situation of coating surface and be designated as zero, the situation that can identify the crackle of the degree of scratching at the useful nail of coating surface is designated as △.
[0040] below, the evaluation result of various characteristics is shown in table 1.
Figure A20081012844600141
[0042] compares example 1 of the present invention and comparative example 17,22,23, example 6 of the present invention and comparative example 18, example 13 of the present invention and comparative example 19 are as can be known, do not use the chemical fibre net, establish structure manufacturing net cage for sea farming and use by opening of the gauze heavier than this chemical fibre net, thus, the shift length of above-mentioned upper corner 12, lower corner 13 all diminishes, and makes net cage for sea farming have high form retentivity and stability is set.And then, compare example 1 of the present invention and comparative example 20,21 as can be known, even gauze, use heavy gauze wiry, no matter the net cage for sea farming type how, the upper corner shift length is all especially little, can make net cage for sea farming have the high stability that is provided with.
[0043] in addition, relatively example 1~3 of the present invention and example of the present invention 4,5 as can be known, if plating Zn iron wire, then in the scope of the adhesion amount of plating Zn layer of the present invention, sea water resistance and coating processability are all good.That is, constitute on the iron wire because above-mentioned wire covers plating Zn layer, simultaneously, the adhesion amount of this plating Zn layer is 350~700g/m 2So can guarantee the coating close attachment, prevent that sea water resistance from descending, simultaneously, prolong during till coating on the iron wire can being consumed, seek to reduce the needed maintenance cost of draping, can be during culturing in not draping, prevent the harmful effects such as anxiety that fish and shellfish is subjected to when moving replacing, seek the raising of feed efficiency and healthy growth and grow.
[0044] in addition, relatively example 6,9,10 of the present invention and example of the present invention 11,12, example 6 of the present invention and example of the present invention 7,8 as can be known, if plating Zn-Al alloy iron wire, in the scope of the composition of the adhesion amount of plating Zn-Al alloy layer of the present invention, sea water resistance and coating processability are all good.That is, because above-mentioned wire is to comprise that Al is that 8~15wt% and the Zn that comprises inevitable composition are that the plating Zn-Al alloy layer of 85~92wt% covers on the iron wire and constitutes, simultaneously, the adhesion amount that makes this plating Zn-Al alloy layer is 350~700g/m 2, the wire that the processability when so sea water resistance and netting can be provided is all good.
[0045] in addition, relatively example 13 of the present invention and example of the present invention 14~16 as can be known, in the scope of the composition of Cu alloy of the present invention, sea water resistance is good.Promptly, because above-mentioned wire is to comprise that Cu is 63~67wt%, Sn is 0.3~0.8wt%, and Ni is 0.1~0.7wt%, and the Zn that comprises inevitable composition is the Cu alloy silk of 31~36wt%, so can provide sea water resistance, particularly sterilization to prevent the good wire of algae property.
Utilize possibility on the industry
[0046] the present invention carries out supporting of fish shellfish to impale certain marine site with net in this net All net cage for sea farming of growing can both be suitable for.

Claims (5)

1. net cage for sea farming, described net cage for sea farming is the net cage for sea farming that impales certain sea area, carries out the breed of fish and shellfish in this net with net, it is characterized in that, float is attached on the tubing that is being linked by truss structure forms upper ledge, relatively dispose the lower frame that constitutes by tubing with this upper ledge, the casing of the gauze system that will constitute by side surface part and bottom surface sections by this lower frame and above-mentioned upper ledge open be located at marine, this gauze braiding sea water resistance and heavy wire and form.
2. net cage for sea farming as claimed in claim 1 is characterized in that, above-mentioned wire covers plating Zn layer and constitutes on the iron wire, and simultaneously, the adhesion amount of this plating Zn layer is 350~700g/m 2
3. net cage for sea farming as claimed in claim 1, it is characterized in that, above-mentioned wire is to comprise that Al is that 8~15wt% and the Zn that contains inevitable composition are that the plating Zn-Al alloy layer of 85~92wt% covers on the iron wire and constitutes, simultaneously, the adhesion amount of this plating Zn-Al alloy layer is 350~700g/m 2
4. net cage for sea farming as claimed in claim 1, it is characterized in that above-mentioned wire is to adopt to comprise that Cu is that 63~67wt%, Sn are that 0.3~0.8wt%, Ni are that 0.1~0.7wt% and the Zn that comprises inevitable composition are the Cu alloy silk of 31~36wt%.
5. as each described net cage for sea farming in the claim 1~4, it is characterized in that the mesh of above-mentioned gauze directly is that the metal wire knitted ramify inside dimension of 2~5mm is that the rhombus of 20~70mm forms with silk.
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Cited By (7)

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CN102106284A (en) * 2011-01-27 2011-06-29 王庆昭 Ultrahigh molecular weight polyethylene deep-sea breeding floating platform
CN102119677A (en) * 2011-04-01 2011-07-13 大连东方润隆水产有限公司 Cage sea cucumber culture device
CN102369896A (en) * 2010-08-23 2012-03-14 中国水产科学研究院东海水产研究所 Geometric structure for wind and wave resistance square metal net box and processing method thereof
CN103875570A (en) * 2014-04-01 2014-06-25 长兴德裕新材料有限公司 Aquaculture net not prone to deformation and knitting method thereof
WO2017201794A1 (en) * 2016-05-26 2017-11-30 中国科学院广州能源研究所 Half-submerged deep-sea aquaculture cage combining wave power and solar power generation
CN107711655A (en) * 2017-11-24 2018-02-23 谢育枝 A kind of net cage and cultural method for aquaculture
CN116019042A (en) * 2023-01-09 2023-04-28 安徽省农业科学院水产研究所 Adjustable fish nest with anti-resistance function

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102369896A (en) * 2010-08-23 2012-03-14 中国水产科学研究院东海水产研究所 Geometric structure for wind and wave resistance square metal net box and processing method thereof
CN102369896B (en) * 2010-08-23 2013-05-22 中国水产科学研究院东海水产研究所 Processing method for wind and wave resistance square metal net box
CN102106284A (en) * 2011-01-27 2011-06-29 王庆昭 Ultrahigh molecular weight polyethylene deep-sea breeding floating platform
CN102106284B (en) * 2011-01-27 2012-11-28 王庆昭 Ultrahigh molecular weight polyethylene deep-sea breeding floating platform
CN102119677A (en) * 2011-04-01 2011-07-13 大连东方润隆水产有限公司 Cage sea cucumber culture device
CN102119677B (en) * 2011-04-01 2012-10-10 大连东方润隆水产有限公司 Cage sea cucumber culture device
CN103875570A (en) * 2014-04-01 2014-06-25 长兴德裕新材料有限公司 Aquaculture net not prone to deformation and knitting method thereof
WO2017201794A1 (en) * 2016-05-26 2017-11-30 中国科学院广州能源研究所 Half-submerged deep-sea aquaculture cage combining wave power and solar power generation
CN107711655A (en) * 2017-11-24 2018-02-23 谢育枝 A kind of net cage and cultural method for aquaculture
CN116019042A (en) * 2023-01-09 2023-04-28 安徽省农业科学院水产研究所 Adjustable fish nest with anti-resistance function
CN116019042B (en) * 2023-01-09 2024-05-17 安徽省农业科学院水产研究所 Adjustable fish nest with anti-resistance function

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