CN210538213U - Multi-layer loop multi-gradient shrimp culture net cage - Google Patents
Multi-layer loop multi-gradient shrimp culture net cage Download PDFInfo
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- CN210538213U CN210538213U CN201921441011.8U CN201921441011U CN210538213U CN 210538213 U CN210538213 U CN 210538213U CN 201921441011 U CN201921441011 U CN 201921441011U CN 210538213 U CN210538213 U CN 210538213U
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- 241000238557 Decapoda Species 0.000 title claims abstract description 107
- 238000009360 aquaculture Methods 0.000 claims abstract description 26
- 244000144974 aquaculture Species 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 230000006698 induction Effects 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 239000013505 freshwater Substances 0.000 abstract description 15
- 239000003433 contraceptive agent Substances 0.000 abstract description 9
- 230000002254 contraceptive effect Effects 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 3
- 241000143060 Americamysis bahia Species 0.000 abstract 3
- 230000000366 juvenile effect Effects 0.000 description 14
- 241000238017 Astacoidea Species 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 239000008239 natural water Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 241000269799 Perca fluviatilis Species 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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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
- 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
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Abstract
The utility model relates to a multi-layer loop multi-gradient shrimp aquaculture net cage. When the shrimp aquaculture net cage in the prior art is replaced, part of shrimp bodies are inevitably damaged. For this reason, this many gradients of ring cover shrimp aquaculture net case of multilayer ring includes the wire frame and arranges the net on the wire frame, the wire frame includes inlayer wire frame, middle level wire frame and outer wire frame, the three all includes the ring of fitting with a contraceptive ring, lower ring and a plurality of evenly distributed's bracing piece, the lower ring pastes and leans on the bracing piece root, the ring portion at each bracing piece top pastes and leans on fitting with a contraceptive ring, and it is fixed with the mode ligature of tether with the slipknot, three's the fitting with a contraceptive ring, be equipped with the inlayer looped netowrk between the lower ring respectively, middle level looped netowrk and outer looped net. When the shrimp larvae grow, the shrimp larvae are cultured in the inner-layer ring net, the middle-layer ring net and the outer-layer ring net in sequence. During the period, the shrimp does not need to be intensively fished, and the shrimp bodies are not damaged. The utility model has the advantages of simple structure, convenient operation, no damage to shrimps and is suitable for large-scale cultivation of shrimps and various freshwater shrimps.
Description
Technical Field
The utility model relates to a multi-layer loop multi-gradient shrimp aquaculture net cage.
Background
With the continuous improvement of living standard of people, the consumption demand of people on shrimp products such as river shrimps, prawns, crayfish and the like is more and more increased. People have begun to breed shrimp, crayfish, etc. in harpoons, ponds, estuaries, etc.
The body types of the shrimps vary greatly from hatching, young shrimp, juvenile shrimp to sub-adult shrimp and adult shrimp. Meanwhile, the shrimp has high requirement on water quality. In order to prevent the shrimp larvae and the juvenile shrimps from escaping, the shrimp larvae and the juvenile shrimps need to be cultured in the net cage with small enough meshes, and in order to facilitate the good circulation of water and the entrance of various natural baits into the net cage, the baits in the natural environment are fully utilized, and the sub-adult shrimps and the adult shrimps are cultured in the net cage with larger meshes.
Therefore, the existing shrimp farmers usually need to prepare a plurality of net cages with different mesh sizes, firstly raise the shrimp seedlings in small net cages with extremely small mesh and small volume, and then gradually transfer the shrimp seedlings into the net cages with larger mesh and larger internal space for cultivation along with the continuous growth of the shrimp individuals. Every time the transfer net cage is replaced, all shrimp seeds and young shrimps need to be collectively caught, when the shrimp seeds and young shrimps are caught, a large number of shrimps are crowded together, legs and crayfish pincers of partial shrimps are inevitably injured, the shrimp seeds and young shrimps losing the crayfish pincers lose feeding tools and self-defense weapons, and the shrimps are difficult to survive and even cannot grow further.
Publication No. CN 206533937U discloses a multilayer freshwater shrimp aquaculture net cage. In the box with a net was placed to the freshwater shrimp, because there was upper circular net piece inside the box with a net, the circular net piece of lower floor, multilayer net pieces such as lower floor's annular net piece and bottom net piece can supply the freshwater shrimp to perch, adhere to, the life range of freshwater shrimp has been enlarged, the freshwater shrimp distribution density in the unit area has been improved, and the freshwater shrimp conceals the place many, do benefit to the exuviating growth, box with a net upper portion periphery has the annular to prevent escaping the net and prevent escaping, the freshwater shrimp distributes also difficult follow the box with a net lateral wall come-up and escape on lower floor's annular net piece, upper strata, bottom freshwater shrimp all can ingest nearby when throwing something and feeding, avoid the freshwater shrimp to strive for.
However, the mesh size of the net sheets of the multi-layer freshwater shrimp aquaculture net cage is not single, the freshwater shrimps cultured by the multi-layer freshwater shrimp aquaculture net cage are not shrimp larvae, the multi-layer freshwater shrimp aquaculture net cage cannot be suitable for culturing the shrimp larvae and the juvenile shrimps, and the damage to the individual prawns caused by fishing due to the replacement of the net cage cannot be reduced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is how to overcome prior art's above-mentioned defect, provide one kind and can be according to the shrimp from small to big different growth stages, constantly enlarge box with a net breed space, constantly enlarge the mesh of box with a net, and enlarge the in-process, need not catch, do not hinder the multi-gradient shrimp aquaculture net box of the multilayer ring cover of shrimp.
In order to solve the technical problem, the multi-layer loop multi-gradient shrimp aquaculture net cage comprises a net frame and a net arranged on the net frame, and is characterized in that: the screen frame comprises an inner screen frame, a middle screen frame and an outer screen frame:
the inner layer net frame comprises an upper ring, a lower ring and three support rods, wherein the upper ring and the lower ring are horizontally arranged, the central lines of the upper ring and the lower ring are superposed, the three support rods are uniformly surrounded outside the upper ring and the lower ring, the tops of the three support rods are respectively bent to form a ring part, the ring part is attached to the upper ring and is bound and fixed in a slipknot mode by using a tying rope, the roots of the three support rods are attached to the lower ring, an inner layer ring net is fixed between the lower ring and the upper ring, the meshes of the inner layer ring net are unfolded to be square, and the side length of the meshes;
the middle layer net frame comprises an upper ring, a lower ring and four supporting rods, wherein the upper ring and the lower ring are horizontally arranged, the central lines of the upper ring and the lower ring are superposed, the four supporting rods are uniformly surrounded outside the upper ring and the lower ring, the tops of the four supporting rods are respectively bent to form a ring part, the ring part is attached to the upper ring and is bound and fixed in a slipknot mode by using a tying rope, the roots of the four supporting rods are attached to the lower ring, a middle layer ring net is fixed between the lower ring and the upper ring, the meshes of the middle layer ring net are unfolded to be square, and the side length;
the outer layer net frame comprises an upper ring, a lower ring and six supporting rods, wherein the upper ring and the lower ring are horizontally arranged, the central lines of the upper ring and the lower ring are superposed, the six supporting rods are uniformly surrounded outside the upper ring and the lower ring, the tops of the six supporting rods are respectively bent to form a ring part, the ring part is attached to the upper ring and is fixedly bound by a tying rope in a slipknot mode, the roots of the six supporting rods are attached to the lower ring, an outer layer ring net is fixed between the lower ring and the upper ring, a circular bottom net is connected to the lower edge of the outer layer ring net, the meshes of the outer layer ring net and the circular bottom net are equal and are less than or equal to 20 multiplied by 20 mm, the outer edge of the circular bottom net is connected with the lower edge of the outer layer ring net, the meshes of the outer layer ring net and the circular bottom net are unfolded to;
all the support rods are made of stainless steel rods or stainless steel pipes with the diameter less than or equal to 20 mm, a bottom plate is arranged at the lower part of each support rod, an insertion rod is arranged at the center of each bottom plate, all the lower rings are flush with or embedded into the underwater ground of the matched aquaculture water body, and the insertion rods of the support rods of the inner layer net frame and the middle layer net frame penetrate through meshes of the circular bottom net and are inserted into the underwater ground of the matched aquaculture water body.
By the design, the inner-layer ring net can effectively protect the shrimp larvae from being damaged during the shrimp larvae. During the growth period of the juvenile shrimps, the middle-layer ring net and the outer-layer ring net can protect the juvenile shrimps and the sub-adult shrimps, are convenient for plankton, small trash fish or other small aquatic organisms in a natural water system to enter, are convenient for the juvenile shrimps and the sub-adult shrimps to eat, are beneficial to the growth of the juvenile shrimps and the sub-adult shrimps, are beneficial to saving bait and reduce the culture cost. In the whole process, concentrated fishing is not needed, and the prawn individuals cannot be damaged.
Preferably, the tying rope used by the inner layer net frame comprises a rope winding and a core rope, and the rope winding and the core rope bind and fix the ring part of each supporting rod and the corresponding part of the upper ring together in a butterfly slipknot manner; the tying rope used by the middle layer net frame comprises a rope winding and a core rope, and the rope winding and the core rope tie and fix the ring part of each supporting rod and the corresponding part of the upper ring in a butterfly slipknot mode. One end of the core rope extends outwards and is provided with a pull ring, the core rope can be drawn out by pulling the pull ring, all butterfly slipknots are automatically released, and the upper ring, the inner-layer ring network and the middle-layer ring network which are connected with each other automatically fall under the action of gravity.
By the design, when needed, the upper ring of the inner layer net frame or the middle layer net frame falls under the action of self gravity as long as the core rope of the inner layer net frame or the middle layer net frame is drawn out.
As optimization, the bait net bag also comprises a bait induction net bag, wherein meshes of the bait induction net bag are unfolded into a square shape, and the side length of the meshes is less than or equal to 5 mm when the net bag is unfolded. According to the design, when the juvenile shrimps or the sub-adult shrimps are attracted to the center of the inner-layer ring net or the middle-layer ring net, the bait is sealed into the bait induction net bag, then the bait induction net bag and the bait are thrown into the center of the inner-layer ring net or the middle-layer ring net, so that the bait can be prevented from floating, the juvenile shrimps or the sub-adult shrimps can be effectively gathered to the central area, and the juvenile shrimps or the sub-adult shrimps can be prevented from being covered when the inner-layer ring net or the middle-layer ring net falls down, and the free movement of the juvenile shrimps or the sub.
The utility model discloses many gradients of multilayer ring cover shrimp aquaculture net case has simple structure, convenient operation, does not hinder the advantage of shrimp, is fit for the large-scale aquaculture sea shrimp and various fresh water shrimps.
Drawings
The multi-layer loop multi-gradient shrimp culture net cage of the utility model is further explained by combining the attached drawings as follows:
FIG. 1 is a schematic view of an outer net frame of a first embodiment of the multi-layered loop multi-gradient shrimp aquaculture net cage in place (the tether is omitted);
FIG. 2 is a schematic view of the outer net frame shown in FIG. 1 with the outer ring net and the circular bottom net installed thereon (the tether is omitted);
FIG. 3 is a schematic view of the installation of a middle net frame on the circular base net shown in FIG. 2 (the tether is omitted);
FIG. 4 is a schematic view of the installation of a mid-level looped network on the mid-level frame shown in FIG. 3 (with the tether omitted);
FIG. 5 is a schematic view of the installation of an inner frame on the circular base net shown in FIG. 4 (with the tethers omitted);
FIG. 6 is a schematic view of the installation of an inner loop net on the inner frame shown in FIG. 5 (with the tether omitted);
FIG. 7 is a schematic structural view of a second embodiment of the multi-layered loop multi-gradient shrimp aquaculture net cage;
FIG. 8 is a first schematic view of a butterfly buckle of a second embodiment of the multi-layered loop multi-gradient shrimp aquaculture net cage;
fig. 9 is a second schematic view of the multi-layered loop multi-gradient shrimp aquaculture net cage according to the second embodiment of the invention, which is formed into a butterfly buckle.
In the figure: 1 is an upper ring, 2 is a lower ring, 3 is a support rod, 31 is a ring part, 32 is a bottom plate, 33 is an inserted rod, 4 is a tether, 41 is a coiled rope, 42 is a core rope, 43 is a pull ring, 5 is an inner-layer ring net, 6 is a middle-layer ring net, 7 is an outer-layer ring net, and 8 is a circular bottom net.
Detailed Description
The first implementation mode comprises the following steps: as shown in fig. 1-6, the multi-layer loop multi-gradient shrimp aquaculture net cage comprises a net frame and a net arranged on the net frame, and is characterized in that: the screen frame comprises an inner screen frame, a middle screen frame and an outer screen frame:
the inner layer net frame comprises an upper ring 1, a lower ring 2 and three support rods 3, wherein the upper ring 1 and the lower ring 2 are horizontally arranged, the central lines of the upper ring 1 and the lower ring 2 are superposed, the three support rods 3 are uniformly surrounded outside the upper ring 1 and the lower ring 2, the tops of the three support rods 3 are respectively bent to form a ring part 31, the ring part 31 is attached to the upper ring 1 and is bound and fixed in a slipknot mode by using a tether 4, the roots of the three support rods 3 are attached to the lower ring 2, an inner layer ring net 5 is fixed between the lower ring 2 and the upper ring 3, the meshes of the inner layer ring net 5 are unfolded to be square, and the side length of the;
the middle-layer net frame comprises an upper ring 1, a lower ring 2 and four supporting rods 3, wherein the upper ring 1 and the lower ring 2 are horizontally arranged, the central lines of the upper ring 1 and the lower ring 2 are superposed, the four supporting rods 3 are uniformly surrounded outside the upper ring 1 and the lower ring 2, the tops of the four supporting rods 3 are respectively bent to form a ring part 31, the ring part 31 is attached to the upper ring 1 and is bound and fixed in a slipknot mode by using a tether 4, the roots of the four supporting rods 3 are attached to the lower ring 2, a middle-layer looped network 6 is fixed between the lower ring 2 and the upper ring 1, the meshes of the middle-layer looped network 6 are unfolded to be square;
outer frame includes and fits with a contraceptive ring 1, lower ring 2 and six bracing pieces 3, fit with a contraceptive ring 1, the equal horizontal arrangement of lower ring 2, its central line coincides, six bracing pieces 3 evenly enclose 1 and 2 outer on fitting with a contraceptive ring outside the contraceptive ring, six bracing pieces 3 tops all bend there is a ring portion 31, this ring portion 31 pastes and leans on 1 on fitting with a contraceptive ring, and it is fixed with the mode ligature of slipknot with tether 4, 3 roots subsides of six bracing pieces lean on 2 on lower ring, 2 and the last ring of fitting with a contraceptive ring are fixed with outer looped netowrk 7 between 1, outer looped netowrk 7 is along even having a circular end net 8 down, the mesh expansion of outer looped netowrk 7 and circular end net 8 is the square, mesh length of side equals when expanding, and all be less than or equal to 20 millimeters.
All the support rods 3 are made of stainless steel rods or stainless steel pipes with the diameter less than or equal to 20 mm, the lower part of each support rod is provided with a bottom plate 32, the center of each bottom plate 32 is provided with an inserted rod 33, all the lower rings 2 are flush with or embedded into the underwater ground of the matched aquaculture water body, and the inserted rods 33 of the support rods 3 of the inner layer net frame and the middle layer net frame penetrate through meshes of the circular bottom net 8 and are inserted into the underwater ground of the matched aquaculture water body.
The installation steps are as follows:
firstly, selecting the sandy water bottom ground or the daub water bottom ground of natural water bodies such as a river fork, a pond, a bay and the like with the water depth of about 1 meter.
firstly, taking the lower ring 2 of the outer layer net frame, placing the lower ring on the water bottom, then taking six support rods 3, uniformly surrounding the periphery of the lower ring 2 of the outer layer net frame, inserting the inserted rods 33 of the six support rods 3 into the water bottom ground, pressing the lower ring 2 on the bottom plate 32 of each support rod 3, then taking the upper ring 1 of the outer layer net frame, placing the upper ring 1 into the six support rods 3, and binding the ring parts 31 of the six support rods 3 and one part of the upper ring 1 together by using a tying rope 4 in a loose-joint mode to form the outer layer net frame shown in figure 1.
thirdly, an outer layer ring net 7 is arranged between the upper ring and the lower ring of the outer layer net frame, and the lower edge of the outer layer ring net 7 is connected with a circular bottom net 8, as shown in figure 2.
taking the lower ring of the middle layer net frame, placing the lower ring on the circular bottom net, taking four support rods, uniformly surrounding the lower ring of the middle layer net frame, inserting the inserted rods of the four support rods into the ground under the water (certainly, the inserted rods are inserted into the mesh holes of the circular bottom net 8 by keeping away from the circular bottom net 8 during insertion), pressing the lower ring on the bottom plate of each support rod, taking the upper ring of the middle layer net frame, placing the upper ring into the four support rods, and sequentially binding the ring parts of the four support rods 3 and part of the upper ring of the middle layer net frame together in a slipknot manner by using tying ropes to form the middle layer net frame shown in figure 3.
and then installing a middle layer ring net 6 between the upper ring and the lower ring of the middle layer net frame, as shown in figure 4.
⑥ the lower ring of the inner layer net frame, placing the lower ring at the center of the circular bottom net, ⑥ the three support rods, uniformly surrounding the lower ring of the inner layer net frame, inserting the inserted rods of the three support rods into the underwater ground (certainly, the inserted rods are inserted into the mesh holes of the circular bottom net 8 by paying attention to the fact that the inserted rods avoid the circular bottom net 8 during insertion), pressing the lower ring on the bottom plate of each support rod, ⑥ the upper ring of the inner layer net frame, placing the upper ring into the three support rods, and binding the ring parts of the three support rods and part of the upper ring of the inner layer net frame together in a loose-joint mode by using tying ropes to form the inner layer net frame shown in figure 5.
⑦ finally, installing a middle layer ring net 5 between the upper ring ⑦ the lower ring of the inner layer net frame, as shown in fig. 6.
When in use, the young crayfish is bred in the inner-layer ring net 5 until the average diameter of the breast height of the crayfish exceeds 10 mm, and then the young crayfish is obtained. At the moment, bait is thrown into the center of the inner-layer ring net 5, the juvenile shrimps are attracted to the center of the inner-layer ring net, and then the tying ropes 4 of the slipknots on the upper ring 1 of the inner-layer ring net 5 are unfastened, so that the upper ring 1 and the inner-layer ring net 5 fall down automatically. When the bait is eaten up, the culture space of the juvenile shrimps is changed from the inner-layer ring net to the middle-layer ring net, and the culture space is enlarged. Meanwhile, the meshes of the middle layer ring net 6 are larger than those of the inner layer ring net 5, so that plankton in a natural water system can enter, the young shrimps can eat conveniently, and the growth of the young shrimps is facilitated.
When the average diameter of the young shrimps in the middle-layer ring net 6 exceeds 20 mm, the inferior adult shrimps are obtained. At the moment, bait is thrown into the center of the middle-layer ring net 6, the inferior adult shrimps are attracted to the center of the middle-layer ring net 6, and then the tying ropes 4 of all the slipknots on the upper ring 1 of the middle-layer ring net 6 are unfastened, so that the upper ring 1 and the middle-layer ring net 6 fall down automatically.
When the bait is eaten up, the culture space of the inferior adult shrimps is changed from the middle-layer ring net 6 to the outer-layer ring net 7, and the culture space is further enlarged. The meshes of the outer layer ring net 7 are larger than those of the middle layer ring net 6, so that aquatic organisms such as small fish, small shrimps and the like in a natural water system can enter conveniently, the inferior adult shrimps can eat conveniently, and the growth of the inferior adult shrimps is facilitated.
After the adult shrimps grow into the sub-adult shrimps, the inner-layer ring net 5 and the middle-layer ring net 6 which are sunk at the water bottom and the upper ring 1 and the lower ring 2 of the inner-layer ring net and the middle-layer ring net are taken out, and the supporting rods 3 of the inner-layer net frame and the middle-layer net frame are pulled out.
Finally, the connecting tether 4 slipknot between the outer layer ring net 7 and the upper ring 1 of the outer layer net frame is unfastened, and finally, the net mouth of the outer layer ring net 7 is closed up and lifted out of the water together with the circular bottom net 8, so that the grown adult shrimps can be completely screened out, and the method is very convenient.
and when entering the next culture period, the third- ⑦ steps of the steps are repeatedly installed, and the multilayer loop multi-gradient shrimp culture net cage can be installed in place again for the next use.
The lower ring 2 of the inner, middle and outer layer net frames is preferably made of stainless steel pipes, and the lower ring 2, the inner layer ring net 5, the middle layer ring net 6, the outer layer ring net 7 and the circular bottom net 8 are subjected to buoyancy force smaller than the self gravity in water.
The upper ring 1 of the inner, middle and outer layer net frames is preferably made of plastic material with specific gravity slightly larger than water.
The second embodiment: as shown in fig. 7-9, the tether 4 for the inner frame comprises a coiled rope 41 and a core rope 42, wherein the coiled rope 41 and the core rope 42 are bound and fixed together in a butterfly-type slipknot manner at the corresponding positions of the ring part 32 and the upper ring 1 of each support rod 3; the tether 4 for the middle layer frame comprises a coil rope 41 and a core rope 42, wherein the coil rope 41 and the core rope 42 are bound and fixed together at the corresponding parts of the ring part 31 and the upper ring 1 of each support rod 3 in a butterfly-shaped slipknot manner.
As shown in fig. 8, the coiled rope 41 is bent into a double strand portion at each supporting rod 3, and the rope end of the double strand portion is passed around the ring portion 31 of each supporting rod 3 and the corresponding portion of the upper ring 1 and then is attached to the root of the double strand portion, as shown in fig. 9, the core rope 42 passes through the rope end of the double strand portion and the root of the double strand portion in the opposite direction of the upper ring, thereby forming a butterfly buckle.
One end of the core rope 42 extends outwards, and is provided with a pull ring 43, the core rope 42 can be drawn out by pulling the pull ring 43, all butterfly buckles are automatically released, the upper ring 1, the inner-layer ring network 5 and the middle-layer ring network 6 which are connected with each other automatically fall under the action of gravity, and other components and structures are slightly as described in the first embodiment.
The third embodiment is as follows: the multi-layer loop multi-gradient shrimp culture net cage further comprises a bait induction net bag (not shown in the figure), wherein meshes of the bait induction net bag are unfolded to be square, the side length of the meshes is less than or equal to 5 mm when the net bag is unfolded, the figure is omitted, and other parts and structures are omitted as in the first embodiment.
Claims (3)
1. The utility model provides a many gradients of multilayer ring cover shrimp aquaculture net case, includes the net frame and arranges the net on the net frame, its characterized in that: the screen frame comprises an inner screen frame, a middle screen frame and an outer screen frame:
the inner layer net frame comprises an upper ring, a lower ring and three support rods, wherein the upper ring and the lower ring are horizontally arranged, the central lines of the upper ring and the lower ring are superposed, the three support rods are uniformly surrounded outside the upper ring and the lower ring, the tops of the three support rods are respectively bent to form a ring part, the ring part is attached to the upper ring and is bound and fixed in a slipknot mode by using a tying rope, the roots of the three support rods are attached to the lower ring, an inner layer ring net is fixed between the lower ring and the upper ring, the meshes of the inner layer ring net are unfolded to be square, and the side length of the meshes;
the middle layer net frame comprises an upper ring, a lower ring and four supporting rods, wherein the upper ring and the lower ring are horizontally arranged, the central lines of the upper ring and the lower ring are superposed, the four supporting rods are uniformly surrounded outside the upper ring and the lower ring, the tops of the four supporting rods are respectively bent to form a ring part, the ring part is attached to the upper ring and is bound and fixed in a slipknot mode by using a tying rope, the roots of the four supporting rods are attached to the lower ring, a middle layer ring net is fixed between the lower ring and the upper ring, the meshes of the middle layer ring net are unfolded to be square, and the side length;
the outer layer net frame comprises an upper ring, a lower ring and six supporting rods, wherein the upper ring and the lower ring are horizontally arranged, the central lines of the upper ring and the lower ring are superposed, the six supporting rods are uniformly surrounded outside the upper ring and the lower ring, the tops of the six supporting rods are respectively bent to form a ring part, the ring part is attached to the upper ring and is bound and fixed in a slipknot mode by using a tying rope, the roots of the six supporting rods are attached to the lower ring, an outer layer ring net is fixed between the lower ring and the upper ring, the lower edge of the outer layer ring net is connected with a circular bottom net, the meshes of the outer layer ring net and the circular bottom net are unfolded to be square, the side lengths of the meshes are equal and are less than or;
all the support rods are made of stainless steel rods or stainless steel pipes with the diameter less than or equal to 20 mm, a bottom plate is arranged at the lower part of each support rod, an insertion rod is arranged at the center of each bottom plate, all the lower rings are flush with or embedded into the underwater ground of the matched aquaculture water body, and the insertion rods of the support rods of the inner layer net frame and the middle layer net frame penetrate through meshes of the circular bottom net and are inserted into the underwater ground of the matched aquaculture water body.
2. The multi-layer loop multi-gradient shrimp aquaculture net cage of claim 1, characterized in that: the tying rope used by the inner layer net frame comprises a rope winding and a core rope, and the rope winding and the core rope bind and fix the ring part of each supporting rod and the corresponding part of the upper ring in a butterfly slipknot manner; the tying rope used by the middle layer net frame comprises a rope coil and a core rope, the rope coil and the core rope bind and fix the ring part of each supporting rod and the corresponding part of the upper ring in a butterfly slipknot way,
one end of the core rope extends outwards and is provided with a pull ring, the core rope can be drawn out by pulling the pull ring, all butterfly slipknots are automatically released, and the upper ring and the inner-layer ring net automatically fall under the action of gravity.
3. The multi-layer loop multi-gradient shrimp aquaculture net cage of claim 1 or 2, characterized in that: the bait induction net bag is characterized by also comprising a bait induction net bag, wherein meshes of the bait induction net bag are unfolded to be square, and the side length of the meshes is less than or equal to 5 mm when the net bag is unfolded.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921441011.8U CN210538213U (en) | 2019-08-30 | 2019-08-30 | Multi-layer loop multi-gradient shrimp culture net cage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921441011.8U CN210538213U (en) | 2019-08-30 | 2019-08-30 | Multi-layer loop multi-gradient shrimp culture net cage |
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| CN210538213U true CN210538213U (en) | 2020-05-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113016674A (en) * | 2021-03-02 | 2021-06-25 | 中国水产科学研究院黄海水产研究所 | Raft type three-dimensional cultivation device and cultivation method thereof |
| CN113826569A (en) * | 2021-10-26 | 2021-12-24 | 北大荒集团黑龙江八五六农场有限公司 | Mixed culture type juvenile crab breeding method based on rice field |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113016674A (en) * | 2021-03-02 | 2021-06-25 | 中国水产科学研究院黄海水产研究所 | Raft type three-dimensional cultivation device and cultivation method thereof |
| CN113016674B (en) * | 2021-03-02 | 2022-03-15 | 中国水产科学研究院黄海水产研究所 | Raft type three-dimensional cultivation device and cultivation method thereof |
| CN113826569A (en) * | 2021-10-26 | 2021-12-24 | 北大荒集团黑龙江八五六农场有限公司 | Mixed culture type juvenile crab breeding method based on rice field |
| CN113826569B (en) * | 2021-10-26 | 2022-05-13 | 北大荒集团黑龙江八五六农场有限公司 | Polyculture type juvenile crab breeding method based on rice field |
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