Fresh and alive king crab temporary rearing system capable of improving survival rate

Abstract

The utility model relates to the technical field of aquaculture, and discloses a fresh king crab temporary rearing system capable of improving the survival rate, which comprises a temporary rearing pond, a circulating water treatment system, an oxygenation system, a low-temperature control system, a water quality on-line monitoring system and a PLC (programmable logic controller) control system, the circulating water treatment system comprises a microfilter, an external circulating water pump, a decolorizing and degassing filter box, a protein separator, a biological purification barrel, an ultraviolet sterilizer and an ozone machine; the decolorizing and degassing filter box is adopted, harmful gas such as CO2 and H2S in water can be removed, the water quality is clear through the adsorption effect of corallite and activated carbon, the requirement for the living environment of the king crabs is met, the survival rate is greatly increased, the air oxygenation mode and the pure oxygen oxygenation mode are adopted, the requirement for low-density temporary culture of the king crabs can be met, and the requirement for low-density temporary culture of the king crabs can be met. Therefore, the system can greatly improve the survival rate of the king crabs in the temporary rearing process of the king crabs and ensure the vitality of the king crabs.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture, in particular to a temporary culture system for fresh king crabs which can improve the survival rate. Background Art

[0002] King crabs are delicious and nutritious, and have become a marine aquatic product with growing demand in the domestic market. However, almost all king crabs on the Chinese market are imported from abroad (mainly from Russia). Since king crabs have high requirements for water quality, the current domestic king crab temporary rearing system is simple in design and cannot be reared for a long time (considering the market price fluctuations, long-term rearing is required), and the survival rate is low, so it is impossible to form a stable supply source and realize the supply in the Chinese market throughout the year. Therefore, there is a lack of a temporary rearing system in China that can temporarily rear fresh king crabs for a long time with a high survival rate. Utility Model Content

[0003] In order to solve the technical problem that the existing temporary rearing cannot be realized for a long time and the survival rate is low, thus a stable supply source cannot be formed, the utility model provides a temporary rearing system for fresh king crabs with improved survival rate.

[0004] The utility model is implemented by the following technical scheme: a temporary culture system for fresh king crabs with improved survival rate, comprising a temporary culture pond (1) and a circulating water treatment system (2), an oxygenation system, a low temperature control system, an online water quality monitoring system and a PLC control system; the circulating water treatment system (2) comprises a microfilter (21), an external circulation water pump (22), a decolorization and degassing filter box (23), a protein separator (24), a biological purification barrel (25), an ultraviolet sterilizer (26) and an ozone generator (27) and other equipment; the microfilter is a device for filtering solid particles, and its main function includes high-efficiency fine filtration, which can remove fine substances such as particles, impurities, suspended matter and the like in liquid, thereby purifying water quality;

[0005] The main function of the decolorization and degassing filter box is to remove harmful gases such as CO2 and H2S in the aquaculture water, and improve the transparency of the water through the adsorption of coral stone and activated carbon;

[0006] The protein skimmer is mainly used to remove protein and other granular dirt in water through the principle of air flotation to purify the water quality.

[0007] Preferably, the temporary holding pond adopts an environmentally friendly PP circular breeding pond, the interior of the temporary holding pond is equipped with a double sewage chassis, and the exterior of the temporary holding pond is equipped with a vertical flow sedimentator. The double sewage chassis collects the remaining bait and feces through the "secondary flow" principle and water flow dynamics, and discharges the sewage through separate pipes; the vertical flow sedimentator can remove the remaining bait and feces collected by the double sewage chassis, reduce the turbidity of the sewage, and improve the transparency of the water body.

[0008] Preferably, the oxygenation system includes a high-speed aerator and an outdoor liquid oxygen tank, a nano aeration tube is provided inside the temporary holding tank, the high-speed aerator is connected to the nano aeration tube, the outdoor liquid oxygen tank is connected to an oxygen cone through a pipeline, the oxygen cone is connected to a second water pump through a pipeline, and the second water pump is connected to the inside of the clean water tank.

[0009] Preferably, the air inlet of the ozone generator is connected to a pipeline of an outdoor liquid oxygen tank, and the air outlet of the ozone generator is connected to a decolorizing and degassing filter box and a protein separator through a pipeline.

[0010] Preferably, the low-temperature control system includes a refrigerator, a cooling tower, an internal circulation water pump, a clean water tank and a water pump, and a pipeline. The refrigerator is connected to the clean water tank through the internal circulation water pump, and the refrigerator and the cooling tower are connected through the water pump and the pipeline.

[0011] Preferably, the decolorization and degassing filter box is located behind the microfilter, the decolorization and degassing filter box is fixedly connected to the top of the pump pool, the decolorization and degassing filter box is connected to the first water pump through a pipeline, and the interior of the decolorization and degassing filter box is filled with grid PE degassing filler, coral stone, and activated carbon in sequence, and the filling ratio of the three is 3:3:1.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] When the utility model is used, the decolorization and degassing filter box can be used to remove harmful gases such as CO2 and H2S in the water body, and the water quality can be made clear through the adsorption of coral stones and activated carbon, which meets the living environment of king crabs and greatly improves the survival rate;

[0014] When the utility model is used, two methods of air oxygenation and pure oxygen oxygenation are adopted, which can meet the needs of low-density temporary culture of king crabs and high-density temporary culture of king crabs, thus avoiding waste and making full use of resources, thus achieving green energy saving;

[0015] When the utility model is in use, a combined refrigeration unit mode of a refrigerator and a cooling tower is adopted, which can accurately control the temporary water temperature of king crabs between 3°C and 5°C, and is highly efficient, energy-saving and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall process flow of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the double sewage chassis of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the microfiltration machine of the utility model.

[0019] In the figure: 1. Temporary holding pond; 2. Circulating water treatment system;

[0020] 11. Double sewage chassis; 111. Nano aeration tube; 12. Vertical flow sedimentation tank;

[0021] 21. Microfiltration machine; 22. External circulation water pump; 23. Decolorization and degassing filter box; 231. First water pump; 24. Protein separator; 25. Biological purification barrel; 26. Ultraviolet sterilizer; 27. Ozone generator;

[0022] 31. High-speed oxygen generator; 32. Outdoor liquid oxygen tank; 322. Oxygen cone; 3221. Second water pump;

[0023] 41. Refrigeration machine; 42. Cooling tower; 43. Internal circulation water pump; 44. Clean water tank; 45. Water pump pipeline. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] Example 1: Please refer to Figure 1 - Figure 3 A temporary culture system for fresh king crabs with improved survival rate in this embodiment includes a temporary culture pond 1, a circulating water treatment system 2, an oxygenation system, a low temperature control system, an online water quality monitoring system and a PLC control system. The circulating water treatment system 2 includes a microfilter 21, an external circulation water pump 22, a decolorization and degassing filter box 23, a protein separator 24, a biological purification barrel 25, an ultraviolet sterilizer 26 and an ozone generator 27. The PLC control system is provided with a working condition machine that is connected to the intelligent digital fishery management platform through the network to realize remote control of various devices.

[0026] Among them, the microfilter 21 is a device for filtering solid particles, and its main functions include high-efficiency fine filtration, which can remove fine substances such as particles, impurities, suspended matter, etc. in the liquid, thereby purifying the water quality;

[0027] Furthermore, the temporary holding pond 1 adopts an environmentally friendly PP circular breeding pond, the interior of the temporary holding pond 1 is equipped with a double sewage chassis 11, and the exterior of the temporary holding pond 1 is equipped with a vertical flow sedimentator 12. The double sewage chassis collects the residual bait and feces through the "secondary flow" principle and water flow dynamics, and discharges the waste through separate pipes; the vertical flow sedimentator can remove the residual bait and feces collected by the double sewage chassis, reduce the turbidity of the sewage, and improve the transparency of the water body;

[0028] Further, the oxygenation system includes a high-speed aerator 31 and an outdoor liquid oxygen tank 32. A nano aeration tube 111 is provided inside the temporary holding tank 1. The high-speed aerator 31 is connected to the nano aeration tube 111. The outdoor liquid oxygen tank 32 is connected to an oxygen cone 322 through a pipeline. The oxygen cone 322 is connected to a second water pump 3221 through a pipeline. The second water pump 3221 is connected to the inside of the clean water tank 44.

[0029] The high-speed aerator 31 is connected to the nano-aeration tube 111 in the temporary culture tank 1 through a pipeline to transport oxygen. The use of air for oxygenation can meet the needs of low-density temporary culture of king crabs. The oxygen cone 322 is transported with oxygen through the outdoor liquid oxygen tank 32, so that the oxygen cone 322 is pumped from the clear water tank 44 into the temporary culture tank 1 through the second water pump 3221 for oxygen supply. The use of pure oxygen for oxygenation can meet the needs of high-density temporary culture of king crabs.

[0030] Furthermore, the air inlet of the ozone generator 27 is connected to the pipeline of the outdoor liquid oxygen tank 32, and the air outlet of the ozone generator 27 is connected to the decolorization and degassing filter box 23 and the protein separator 24 through the pipeline. The decolorization and degassing filter box 23 can not only remove harmful gases such as CO2 and H2S in the water body, but also make the water clear through the adsorption of coral stone and activated carbon. The function of the protein separator 24 is mainly to remove protein and other granular dirt in the water through the principle of air flotation to purify the water quality;

[0031] Furthermore, the low temperature control system includes a refrigerator 41, a cooling tower 42, an internal circulation water pump 43, a clean water tank 44 and a water pump pipeline 45. The refrigerator 41 is connected to the clean water tank 44 through the internal circulation water pump 43 to form a water cycle; the refrigerator 41 and the cooling tower 42 are connected through the water pump pipeline 45 to form a water cycle. The combined refrigeration unit mode of the refrigerator 41 and the cooling tower 42 can accurately control the temporary water temperature of the king crab between 3°C and 5°C, which is efficient, energy-saving and reliable.

[0032] Furthermore, the decolorization and degassing filter box 23 is located behind the microfilter 21, and the decolorization and degassing filter box 23 is fixedly connected to the top of the pump pool. The decolorization and degassing filter box 23 is connected to the first water pump 231 through a pipeline. The interior of the decolorization and degassing filter box 23 is filled with mesh PE degassing filler, coral stone, and activated carbon in sequence, and the filling ratio of the three is 3:3:1.

[0033] Working principle: King crabs are placed in a temporary holding pond, and the water in the entire temporary holding pond is circulated and treated through a circulating water treatment system, so that the water quality indicators (including ammonia nitrogen, nitrite, pH, dissolved oxygen, and temperature) meet the survival requirements of king crabs. Among them, the most critical is to adopt a combined refrigeration unit mode of a refrigerator and a cooling tower, which can accurately control the water temperature of king crabs in the temporary holding period between 3°C and 5°C; a decolorization and degassing filter box 23 is adopted, which can not only remove harmful gases such as CO2 and H2S in the water, but also make the water clear through the adsorption of coral stones and activated carbon, meet the living environment of king crabs, and greatly improve the survival rate; the two methods of air oxygenation and pure oxygen oxygenation are adopted, which can meet the needs of low-density temporary holding of king crabs and high-density temporary holding of king crabs, can greatly save energy consumption, and improve the survival rate of king crabs.

[0034] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A temporary culture system for fresh king crabs with improved survival rate, characterized in that: The invention comprises a temporary holding pond (1) and a circulating water treatment system (2), an oxygenation system, a low temperature control system, an online water quality monitoring system and a PLC control system. The circulating water treatment system (2) comprises a microfilter (21), an external circulation water pump (22), a decolorizing and degassing filter box (23), a protein separator (24), a biological purification barrel (25), an ultraviolet sterilizer (26) and an ozone generator (27).

2. A temporary culture system for fresh king crabs with improved survival rate according to claim 1, characterized in that: The temporary holding pond (1) is an environmentally friendly PP circular aquaculture pond. The interior of the temporary holding pond (1) is equipped with a double sewage discharge chassis (11), and the exterior of the temporary holding pond (1) is equipped with a vertical flow sedimentation vessel (12).

3. A temporary culture system for fresh king crabs with improved survival rate according to claim 1, characterized in that: The oxygenation system comprises a high-speed aerator (31) and an outdoor liquid oxygen tank (32); a nano aeration tube (111) is arranged inside the temporary holding tank (1); the high-speed aerator (31) is connected to the nano aeration tube (111); the outdoor liquid oxygen tank (32) is connected to an oxygen cone (322) via a pipeline; the oxygen cone (322) is connected to a second water pump (3221) via a pipeline; and the second water pump (3221) is connected to the inside of a clear water tank (44).

4. A temporary culture system for fresh king crabs for improving the survival rate according to claim 3, characterized in that: The air inlet of the ozone generator (27) is connected to a pipeline of an outdoor liquid oxygen tank (32), and the air outlet of the ozone generator (27) is connected to a decolorizing and degassing filter box (23) and a protein separator (24) through a pipeline.

5. The temporary culture system for fresh king crabs with improved survival rate according to claim 1, characterized in that: The low-temperature control system comprises a refrigerator (41), a cooling tower (42), an internal circulation water pump (43), a clean water tank (44) and a water pump pipeline (45); the refrigerator (41) is connected to the clean water tank (44) via the internal circulation water pump (43), and the refrigerator (41) and the cooling tower (42) are connected via the water pump pipeline (45).

6. A temporary culture system for fresh king crabs with improved survival rate according to claim 1, characterized in that: The decolorizing and degassing filter box (23) is located behind the microfilter (21), the decolorizing and degassing filter box (23) is fixedly connected to the top of the pump pool, the decolorizing and degassing filter box (23) is connected to the first water pump (231) via a pipeline, and the interior of the decolorizing and degassing filter box (23) is filled with mesh PE degassing filler, coral stone, and activated carbon in sequence, and the filling ratio of the three is 3:3:1.

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