CN218473924U - A breeding device for hairy crab - Google Patents
A breeding device for hairy crab Download PDFInfo
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- CN218473924U CN218473924U CN202222421091.9U CN202222421091U CN218473924U CN 218473924 U CN218473924 U CN 218473924U CN 202222421091 U CN202222421091 U CN 202222421091U CN 218473924 U CN218473924 U CN 218473924U
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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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- 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 discloses a breeding device for hairy crabs, which comprises a breeding net cage arranged at the middle upper part of a crab pond, wherein a floating body is fixed on the outer surface of the breeding net cage, a cavity is arranged in the floating body, and an opening and closing port for introducing or discharging pressure-loaded water in the cavity is arranged on the floating body; impeller type aeration and oxygenation equipment positioned at the bottom of the crab pond is arranged outside the culture net cage; at least two anchor posts fixedly connected with the bottom of the crab pond are arranged on the outer side of the aquaculture net cage, the anchor posts are respectively arranged on two sides of the aquaculture net cage, connecting ropes are fixedly connected to the anchor posts, and the other ends of the connecting ropes are fixedly connected to the outer surface of the aquaculture net cage. The utility model can avoid the natural enemies of the hairy crabs, but can provide the natural state cultivation and growth environment; the impeller type aeration equipment with low cost does not have the impact of air flow generated by aeration or water flow generated after aeration on the cultured hairy crabs, particularly young crabs, so that the good culture environment of the hairy crabs is kept, and the quality of the hairy crabs is convenient to improve.
Description
Technical Field
The utility model relates to a breeding device for hairy crab.
Background
The hairy crabs are also called river crabs, and are learned as Chinese mitten crabs (Eriocheir sinensis), which are widely distributed in river areas such as Liaohe, yellow river, yangtze river, oujiang river, fujiang river and the like in China, are one of the main economic crabs in China, and are also fresh water crabs with the highest yield in crabs. The lotus seed cake is popular with consumers due to rich nutrition and delicious taste, and is well sold in domestic and foreign markets. The hairy crabs have the advantages of strong environmental adaptability, poor feeding, wide bait source, wide market prospect and the like, and have higher breeding benefits.
How to improve the quality of the hairy crabs is always an important problem concerned by breeding enterprises, the existing hairy crab breeding mode is generally free-ranging in lakes or ponds, an aeration oxygen increasing device is arranged at the bottom of the lake or the crab pond to increase the dissolved oxygen of the pond water in the crab pond, the traditional aeration technologies of waterwheel type, impeller type and fountain type are developed to the existing micro-pore aeration oxygen increasing technology, but even if the existing micro-pore aeration oxygen increasing technology is adopted, airflow (or water flow generated after aeration) generated by aeration can impact the bred hairy crabs (especially juvenile crabs) to a certain extent, and the breeding environment of the hairy crabs is influenced. In addition, in order to improve the quality of the hairy crabs, the hairy crabs are directly placed in lakes or ponds at present to provide a cultivation and growth environment which is close to the natural state of the hairy crabs, and although the requirements of the hairy crabs for growth and cultivation are met, natural enemies of the hairy crabs in the lakes can not avoid influencing the yield and the quality of the hairy crabs. In addition, the hairy crabs like to live at the bottom of the lake, and the culture environment at the bottom of the lake is not friendly to the growth and culture of the hairy crabs due to bait residues, crab excrement and the like. At present, the cultivation is changed to fine cultivation in the same way, the cultivation is still in an exploration stage at present, and no suitable pilot test cultivation device is available. Patent publication No. CN 204090781U: a hairy crab culture device is placed in a pond or a lake and comprises a center anchor, wherein net cages are arranged on two sides of the center anchor, sinkers are arranged at the bottoms of the net cages, floats are arranged on the upper portions of the net cages, a working platform is arranged above the center anchor, the center float is arranged below the working platform, a water pump is arranged on the working platform, a water inlet pipe of the water pump extends to the position below the working platform, a spray pipe of the water pump is arranged above the net cages, and a sun-proof cover covers the whole device. The water circulation mode of the device has certain water flow impact on the hairy crabs (especially young crabs), and does not provide an excellent hairy crab culture environment. In addition, although the water circulation mode can avoid bait residues, crab excrement and the like accumulated on the bottom wall of the net cage 2 by matching with the net cage, the floating and fixing of the water circulation mode need more and complicated structural components and need a central anchor, a floater and a sinker. In addition, aeration and oxygenation equipment is basically not arranged (or the water in the pond or the lake flows into the net cage through the water inlet pipe 8 and the spray pipe 9 to form water circulation to realize small amount of dissolved oxygen increase), so that fine cultivation and quality improvement of the hairy crabs are difficult to realize.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a breeding device for hairy crabs, which can avoid the natural enemies of the hairy crabs and provide a natural breeding and growing environment, and the bottom of the device has no bait residue or excrement residue; the impeller type aeration equipment with low cost does not have the impact of air flow generated by aeration or water flow generated after aeration on the cultured hairy crabs, particularly young crabs, so that the good culture environment of the hairy crabs is kept, and the quality of the hairy crabs is convenient to improve; the floating and fixing structure is simple; it is very suitable for being used as a pilot scale test cultivation device for the fine cultivation of the hairy crabs.
In order to achieve the purpose, the technical scheme of the utility model is to design a breeding device for hairy crabs, which comprises a breeding net cage arranged at the middle upper part of a crab pond, wherein a floating body is fixed on the outer surface of the breeding net cage, a cavity is arranged in the floating body, and an opening and closing port for introducing or discharging pressurized water in the cavity is arranged on the floating body;
impeller type aeration and oxygenation equipment positioned at the bottom of the crab pond is arranged outside the culture net cage; at least two anchor posts fixedly connected with the bottom of the crab pond are arranged on the outer side of the aquaculture net cage, the anchor posts are respectively arranged on two sides of the aquaculture net cage, connecting ropes are connected to the anchor posts, and the other ends of the connecting ropes are connected with the outer surface of the aquaculture net cage. The net cage arranged in the crab pond is adopted to form a semi-isolated environment, so that on one hand, the harm of natural enemies to the hairy crabs can be avoided, and on the other hand, the hairy crabs can be prevented from contacting the bottom layer filled with bait residues, crab excrement and the like. The breeding device is very simply fixed through the floating body, the anchor post and the connecting rope (one end of the connecting rope is fixedly connected to the anchor post, the other end of the connecting rope is fixedly connected to the outer surface of the breeding net cage), and the floating body can be adjusted through the opening and closing port so as to adjust the height of the breeding device to be suitable for different conditions, and the applicability of the breeding device is improved.
According to a further technical scheme, waterweeds are planted at the bottom of the crab pond outside the culture net cage; and the opening and closing port is communicated with a liquid inlet and outlet pipe, and an opening and closing valve is arranged on the liquid inlet and outlet pipe. The bottom of the crab pond is planted with the waterweed to be more close to the natural growth environment of the hairy crabs.
The further technical proposal is that one end of the liquid inlet and outlet pipe is connected with the opening and closing port; the other end is connected with a ballast water recovery tank through a water suction pump, or the other end is connected with a ballast water storage tank through a positive pressure pump. One end of the liquid inlet and outlet pipe is connected with a water pump or a positive pressure pump to realize the filling or discharging of ballast water in the floating body so as to adjust the buoyancy of the aquaculture net cage, realize the replacement of water in the net cage by periodically replacing the amount of the ballast water in the floating body, and avoid the height (possibly causing poor water quality at the same height) in the same pond (or crab pond) for a long time.
The technical scheme is that a plurality of aquaculture net cages are arranged, four anchor posts are arranged around each aquaculture net cage in a rectangular array, fixed pulleys are rotatably arranged at the top ends of the four anchor posts, and two loading ropes are matched with the four anchor posts;
each weight rope bypasses a pair of fixed pulleys which are arranged oppositely, the two ends of each weight rope are fixedly connected with a weight respectively, and the weight rope between the fixed pulleys is fixedly connected to the aquaculture net cage. Through the arrangement of the mode, compared with the scheme that two ends of the connecting rope are respectively and fixedly connected to the anchor post and the aquaculture net cage, the aquaculture net cage is more stable, and the state can be more easily maintained without tipping. More preferably, the weight block is internally provided with a cavity, the weight block is provided with an opening and closing port (namely, the weight of the weight block is changed by changing the weight of ballast water in the weight block by adopting the structure same as that of a floating body), or the outer surface of the weight block is fixedly provided with the floating body, and the weight of the weight block is changed by changing the amount of ballast water in the floating body, so that the weight of the floating body on the aquaculture net cage is changed, and the height of the aquaculture net cage is changed.
The further technical scheme is that the aquaculture net cage is of a hexahedral structure, and each surface of the aquaculture net cage comprises a stainless steel frame, a stainless steel wire mesh and a wire mesh made of high-density polyethylene, wherein the stainless steel wire mesh and the wire mesh are sequentially arranged from outside to inside. The stainless steel frame arranged outside the aquaculture net cage can effectively protect the hairy crabs in the aquaculture net cage and avoid the natural enemies of the hairy crabs from damaging the hairy crabs.
The further technical proposal is that the top of the aquaculture net cage is provided with a sun shade fixedly connected with a stainless steel framework of the aquaculture net cage. The adverse effect on the growth of the hairy crabs when the sun intensity is too high can be avoided after the arrangement.
The utility model has the advantages and the beneficial effects that: natural enemies of hairy crabs can be avoided, a natural cultivation and growth environment can be provided, and no bait residue or excrement residue exists at the bottom of the device; the impeller type aeration equipment with low cost does not have the impact of air flow generated by aeration or water flow generated after aeration on the cultured hairy crabs, particularly young crabs, so that the good culture environment of the hairy crabs is kept, and the quality of the hairy crabs is convenient to improve; the floating fixing structure is simple; it is very suitable for being used as a pilot scale test cultivation device for the fine cultivation of the hairy crabs.
The net cage arranged in the crab pond is adopted to form a semi-isolated environment, so that on one hand, the harm of natural enemies to the hairy crabs can be avoided, and on the other hand, the hairy crabs can be prevented from contacting the bottom layer filled with bait residues, crab excrement and the like. The breeding device is very simply fixed through the arrangement of the floating body, the anchor column and the connecting rope, and the floating body can be adjusted through the arrangement of the opening and closing port so as to adjust the height of the breeding device to be suitable for different conditions, so that the applicability of the breeding device is improved.
The bottom of the crab pond is planted with the waterweeds to be closer to the natural growth environment of the hairy crabs.
One end of the liquid inlet and outlet pipe is connected with a water pump or a positive pressure pump to realize the filling or discharging of ballast water in the floating body so as to adjust the buoyancy of the aquaculture net cage, realize the replacement of water in the net cage by periodically replacing the amount of the ballast water in the floating body, and avoid the height of the water in the same pond (or crab pond) for a long time;
the stainless steel frame arranged outside the aquaculture net cage can effectively protect the hairy crabs in the aquaculture net cage and avoid the natural enemies of the hairy crabs from damaging the hairy crabs.
The arrangement of the sun shade can avoid the adverse effect on the growth of the hairy crabs when the sun intensity is too high.
Drawings
FIG. 1 is a schematic view of a crab culture device for hairy crabs placed in a crab pond;
FIG. 2 is a cross-sectional view of a side wall of the aquaculture cage of FIG. 1;
FIG. 3 is a top view of the float of FIG. 1;
FIG. 4 is a schematic illustration of the principle connection of the float of FIG. 3;
fig. 5 is a schematic diagram of a second embodiment of the present invention.
In the figure: 1. crab ponds; 2. a culture net cage; 3. a float; 4. opening and closing the opening; 5. impeller type aeration and oxygenation equipment; 6. an anchor post; 7. connecting ropes; 8. a liquid inlet and outlet pipe; 9. opening and closing a valve; 10. a suction pump or positive pressure pump; 11. a ballast water recovery tank or a ballast water storage tank; 12. a sun shade; 13. a stainless steel frame; 14. stainless steel wire mesh; 15. a wire mesh; 16. a fixed pulley; 17. a load-bearing rope; 18. and a negative weight block.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows:
as shown in fig. 1 to 4, the utility model relates to a cultivating device for hairy crabs, which comprises a cultivating net cage 2 arranged at the middle upper part of a crab pond 1, a floating body 3 fixed on the outer surface of the cultivating net cage 2, a cavity arranged in the floating body 3 and an opening and closing port 4 arranged on the floating body 3 for introducing or discharging pressure-carrying water in the cavity; the exterior of the culture net cage 2 is provided with an impeller type aeration and oxygenation device 5 positioned at the bottom of the crab pond 1; at least two anchor posts 6 fixedly connected with the bottom of the crab pond 1 are arranged on the outer side of the aquaculture net cage 2, the anchor posts 6 are respectively arranged on two sides of the aquaculture net cage 2, connecting ropes 7 are fixedly connected onto the anchor posts 6, and the other ends of the connecting ropes 7 are fixedly connected onto the outer surface of the aquaculture net cage 2. The waterweeds are arranged in the culture net cage 2; the opening and closing port 4 is communicated with a liquid inlet and outlet pipe 8, and the liquid inlet and outlet pipe 8 is provided with an opening and closing valve 9. One end of the liquid inlet and outlet pipe 8 is connected with the opening and closing port 4; the other end is connected with a ballast water recovery tank or a ballast water storage tank through a water pump or a positive pressure pump 10; the aquaculture net cage 2 is of a hexahedral structure, and each surface of the aquaculture net cage comprises a stainless steel frame 13, a stainless steel wire mesh 14 and a wire mesh made of high-density polyethylene, which are sequentially arranged from outside to inside. The top of the aquaculture net cage 2 is provided with a sunshade 12 fixedly connected with a stainless steel frame 13 of the aquaculture net cage 2.
Example two:
the difference from the first embodiment is that, as shown in fig. 5, a plurality of aquaculture net cages are arranged, four anchor posts are arranged around each aquaculture net cage in a rectangular array, fixed pulleys 16 are rotatably arranged at the top ends of the four anchor posts, and two load-bearing ropes 17 are matched with the four anchor posts; each load-bearing rope 17 is wound around a pair of fixed pulleys 16 which are arranged oppositely, two ends of each load-bearing rope 17 are fixedly connected with a load-bearing weight 18 respectively, and the load-bearing rope 17 positioned between the fixed pulleys 16 is fixedly connected to the aquaculture net cage.
The working principle is as follows:
the cultivation net cage is connected with the middle part of the load-bearing rope, ballast water is selectively filled into or discharged from the floating body according to the required placement height (if the floating body is fixedly arranged outside the load-bearing block, the ballast water can be filled into or discharged from the floating body outside the load-bearing block according to the situation) so as to adjust the height of the cultivation net cage, and after a period of time, the ballast water is filled into the floating body or part of the ballast water is discharged so as to adjust the height of the cultivation net cage.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The breeding device for the hairy crabs is characterized by comprising a breeding net cage arranged at the middle upper part of a crab pond, wherein a floating body is fixedly arranged on the outer surface of the breeding net cage, a cavity is arranged in the floating body, and the floating body is provided with an opening and closing port for introducing or discharging pressurized water in the cavity;
impeller type aeration and oxygenation equipment positioned at the bottom of the crab pond is arranged outside the culture net cage; at least two anchor posts fixedly connected with the bottom of the crab pond are arranged on the outer side of the aquaculture net cage, the anchor posts are respectively arranged on two sides of the aquaculture net cage, connecting ropes are connected to the anchor posts, and the other ends of the connecting ropes are connected with the outer surface of the aquaculture net cage.
2. The cultivating device for hairy crabs as claimed in claim 1, wherein the bottom of the crab pond outside the cultivating net cage is planted with elodea nuttallii; and the opening and closing port is communicated with a liquid inlet and outlet pipe, and an opening and closing valve is arranged on the liquid inlet and outlet pipe.
3. The cultivating device for hairy crabs as claimed in claim 2, wherein one end of the liquid inlet and outlet pipe is connected with the opening and closing port; the other end is connected with a ballast water recovery tank through a water suction pump, or the other end is connected with a ballast water storage tank through a positive pressure pump.
4. The cultivating device for hairy crabs as claimed in claim 3, wherein the cultivating cages are provided with a plurality of cultivating cages, four anchor posts are arranged around each cultivating cage in a rectangular array, top ends of the four anchor posts are rotatably provided with fixed pulleys, and two load-bearing ropes are matched with the four anchor posts;
each weight rope bypasses a pair of fixed pulleys which are arranged oppositely, the two ends of each weight rope are fixedly connected with a weight respectively, and the weight rope between the fixed pulleys is fixedly connected to the aquaculture net cage.
5. The cultivating device for hairy crabs according to claim 4, wherein the cultivating net cage has a hexahedral structure, and each surface of the cultivating net cage comprises a stainless steel frame, a stainless steel wire mesh and a wire mesh made of high-density polyethylene, which are arranged in sequence from outside to inside.
6. The hairy crab culture device according to claim 5, wherein a sunshade is arranged on the top of the culture net cage and fixedly connected with the stainless steel frame of the culture net cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222421091.9U CN218473924U (en) | 2022-09-14 | 2022-09-14 | A breeding device for hairy crab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222421091.9U CN218473924U (en) | 2022-09-14 | 2022-09-14 | A breeding device for hairy crab |
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| Publication Number | Publication Date |
|---|---|
| CN218473924U true CN218473924U (en) | 2023-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222421091.9U Active CN218473924U (en) | 2022-09-14 | 2022-09-14 | A breeding device for hairy crab |
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| CN (1) | CN218473924U (en) |
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- 2022-09-14 CN CN202222421091.9U patent/CN218473924U/en active Active
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