A fish and shrimp preservation device and its usage method

Abstract

This invention discloses a fish and shrimp survival device and its usage method, comprising multiple outer frames, a bottom frame, a top frame, an inner net, an inner frame fixing bracket, a sealing cover, and a microporous inner layer. The multiple outer frames, bottom frame, and top frame are assembled to form a water tank body. The top frame has an opening for loading and unloading. The inner frame fixing bracket is connected to the inner side of the opening. The fixing part of the inner net is connected to the inner frame fixing bracket, fixing the inner net inside the water tank body. The sealing cover is detachably connected to the top of the inner frame fixing bracket. Multiple air vents are evenly distributed on the outer side of the water tank body, and the inner side of the outer frame is covered with a highly permeable but waterproof microporous inner layer. By setting up a water tank body with air vents and covering the inner side of the water tank body with a highly permeable but waterproof microporous inner layer, oxygen from the air can naturally replenish the aquaculture water inside the water tank during fish and shrimp transportation, eliminating the need for intermediate oxygenation and additional oxygenation devices, thus saving on oxygenation costs during transportation.

Description

Technical Field

[0001] This invention relates to the field of aquatic product transportation technology, and in particular to a fish and shrimp preservation device and its usage method. Background Technology

[0002] Currently, consumer demand for live fish and shrimp is showing a significant upward trend. However, the supply of live fish and shrimp faces severe challenges due to geographical limitations. Because live fish and shrimp require specific living environments and temperature conditions, they are highly susceptible to death and spoilage during long-distance transportation. Therefore, it is necessary to regularly add water and oxygen to the transport containers during transportation, which increases the difficulty of transportation and makes it difficult to promote on a large scale in practical applications.

[0003] To address the aforementioned problems, Chinese utility model publication CN219019976U discloses an aquatic product transport tank that facilitates the arrangement of aeration pipes. This transport tank specifically includes a tank body, a lid, and an oxygenation device. The tank body has a cavity for containing aquatic products, with an open top. The lid controls the opening and closing of the cavity. The oxygenation device includes an aeration pipe for transporting oxygen, with its outlet located within the cavity. Grooves for routing the aeration pipe are provided on the sidewalls and bottom of the cavity. The aeration pipe is positioned within and extends along these grooves. This arrangement of the aeration pipes on the sidewalls and bottom of the cavity allows for uniform oxygen distribution within the cavity, significantly improving the survival rate of aquatic products and reducing transportation costs. While the above methods can provide oxygen to the fish and shrimp in the transport containers during transportation, several problems remain. First, the need to add oxygenation devices to the transport containers not only increases their overall size and occupies more transport space, but also increases energy consumption, thus raising transportation costs. Furthermore, placing the oxygenation devices on top of the transport containers prevents them from being stacked, and given the limited capacity of the containers, it is difficult to transport large quantities of live fish and shrimp. Summary of the Invention

[0004] The purpose of this invention is to provide a fish and shrimp survival device and its usage method to solve one or more technical problems existing in the background art.

[0005] To achieve this objective, the present invention adopts the following technical solution: A fish and shrimp survival device includes multiple outer frames, a bottom frame, a top frame, an inner net, an inner frame fixing bracket, a sealing cover, and a microporous inner layer. The multiple outer frames, the bottom frame, and the top frame are assembled to form a water tank body. The top frame has an opening for taking in and putting out the fish or shrimp. The inner frame fixing bracket is connected to the inner side of the opening for taking in and putting out the fish or shrimp. The fixing part of the inner net is connected to the inner frame fixing bracket, so that the inner net is fixed in the water tank body. The sealing cover is detachably connected to the top of the inner frame fixing bracket. Multiple ventilation holes are evenly distributed on the outer side of the water tank body. The inner side of the outer frame is covered with a highly permeable but waterproof microporous inner layer.

[0006] Preferably, the microporous inner layer is a polytetrafluoroethylene membrane, and the outer frame, the bottom frame, and the top frame are all made of perforated plastic sheets.

[0007] Preferably, the pore size of the microporous inner layer is 0.1μm-0.5μm.

[0008] Preferably, the system further includes a thermostatic control component. The bottom of the water tank body is provided with a base, and the thermostatic control component is disposed in the base. The thermostatic control component includes a semiconductor cooler, a cooler bracket, a first heat-conducting plate, a second heat-conducting plate, a first heat exchanger, and a second heat exchanger. The semiconductor cooler is embedded in the cooler bracket. The first heat-conducting plate is disposed on the side of the cooler bracket near the water tank body, and the second heat-conducting plate is disposed on the side of the cooler bracket away from the water tank body. The first heat-conducting plate and the second heat-conducting plate are respectively attached to the cold end and the hot end of the semiconductor cooler. The first heat exchanger is disposed on the first heat-conducting plate, and the second heat exchanger is disposed at the bottom of the second heat-conducting plate.

[0009] Preferably, the constant temperature control component includes a cooling fan and a cooling fan. The first heat exchanger is provided with a plurality of first fins, and the second heat exchanger is provided with a plurality of second fins. The cooling fan is located between the water tank body and the first heat exchanger. The air outlet direction of the cooling fan is parallel to the gap between the second fins. The cooling fan is located on the outside of the base. The bottom of the base is provided with a heat insulation buffer pad. The top of the top frame is provided with a fixing block that matches the shape of the base.

[0010] Preferably, the constant temperature regulating component further includes a first temperature sensor and a second temperature sensor, the first temperature sensor being disposed between the bottom frame and the first heat conduction plate, and the second temperature sensor being disposed inside the water tank.

[0011] Preferably, it also includes an environmental monitoring component, which includes an ammonia nitrogen sensor, a salinity sensor, and a water level sensor. The detection probes of the ammonia nitrogen sensor and the salinity sensor are both located inside the water tank. A water level detection box is located on the inner side of one of the outer frames. A water passage hole is opened at the bottom of the water level detection box. The water level sensor is located inside the water level detection box. An opening is provided on one side of the water level detection box. The microporous inner layer covers the opening.

[0012] Preferably, it also includes a waterproof light strip and a light strip controller; the waterproof light strip is disposed around the top of the outer frame, the waterproof light strip is electrically connected to the light strip controller, and the light strip controller is disposed on the top frame.

[0013] Preferably, the system also includes multiple microporous vibrating plates and multiple baffles. The multiple microporous vibrating plates are evenly distributed and fixed on the bottom frame. The vibrating end of the microporous vibrating plate is located on the inner side of the microporous inner layer. The multiple baffles are evenly distributed on the top of the water tank body. The baffles are vertically opposite to the microporous vibrating plates. The baffles have a corrugated structure.

[0014] The present invention also proposes a method for using a fish and shrimp survival device, which includes the following steps: injecting oxygenated purified water into the water tank, placing fresh fish and shrimp in the inner net, and installing a sealing cover. During transportation, oxygen from the air is naturally replenished into the water in the tank through the vents and the inner layer of micropores.

[0015] Compared with existing technologies, the advantages of this invention are as follows: By setting up a water tank body with vents and covering the inside of the water tank body with a highly breathable but waterproof microporous inner layer, oxygen from the air can naturally replenish the aquaculture water inside the water tank during the transportation of fish and shrimp, eliminating the need for intermediate oxygenation and additional oxygenation devices, thus saving the cost and time associated with oxygenation during transportation. Because the microporous inner layer is breathable but waterproof, the aquaculture water will not overflow from the water tank body during transportation, eliminating the need for water replenishment and saving the cost of water changes. Furthermore, this device can be reused after transportation and cleaning, saving water and being environmentally friendly. In addition, the fish and shrimp preservation device of this invention can be stacked in multiple layers, and the structure outside the water tank body occupies less transportation space, thereby increasing the transport capacity of live fish and shrimp and further saving transportation costs. Attached Figure Description

[0016] The accompanying drawings further illustrate the present invention, but the content of the drawings does not constitute any limitation on the present invention.

[0017] Figure 1 This is a schematic diagram of the internal structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the internal structure of Embodiment 2 of the present invention.

[0018] The components include: outer frame 11, bottom frame 12, top frame 13, inner mesh 14, inner frame fixing bracket 15, water tank body 1, sealing cover 16, microporous inner layer 2, loading and unloading port 151, base 31, semiconductor cooler 32, cooler bracket 33, first heat conduction plate 34, second heat conduction plate 35, first heat exchanger 36, second heat exchanger 37, cooling fan 38, heat dissipation fan 39, heat insulation buffer pad 4, fixing block 5, microporous vibrating plate 6, liquid baffle 7, and waterproof light strip 8. Detailed Implementation

[0019] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1 This embodiment provides a fish and shrimp survival device, see attached diagram. Figure 1 The water tank body 1 consists of multiple outer frames 11, a bottom frame 12, a top frame 13, an inner mesh 14, an inner frame fixing bracket 15, a sealing cover 16, and a microporous inner layer 2. The multiple outer frames 11, bottom frames 12, and top frames 13 are assembled to form the water tank body 1. The top frame 13 has an opening 151 for taking out and putting in. The inner frame fixing bracket 15 is connected to the inner side of the opening 151. The fixing part of the inner mesh 14 is connected to the inner frame fixing bracket 15, so that the inner mesh 14 is fixed inside the water tank body 1. The sealing cover 16 is detachably connected to the top of the inner frame fixing bracket 15. Multiple vent holes are evenly opened on the outer side of the water tank body 1. The inner side of the outer frame 11 is covered with a highly breathable but waterproof microporous inner layer 2.

[0021] By incorporating a water tank body 1 with ventilated holes and covering the inside of the water tank body 1 with a highly breathable but waterproof microporous inner layer 2, oxygen from the air can naturally replenish the aquaculture water in the water tank body 1 during the transportation of fish and shrimp. This eliminates the need for intermediate oxygenation or additional oxygenation devices, saving both the cost and time associated with oxygenation during transport. Furthermore, because the microporous inner layer 2 is breathable but waterproof, the aquaculture water will not overflow the water tank body 1 during transportation, eliminating the need for water replenishment and saving on water change costs. The device can also be reused after transportation and cleaning, making it water-saving and environmentally friendly. In addition, the fish and shrimp preservation device of this invention can be stacked in multiple layers, with minimal space occupied by structures other than the water tank body 1 during transportation, thereby increasing the transport capacity of live fish and shrimp and further reducing transportation costs. The small opening of the loading / unloading port 151 avoids occupying a large area of ​​the top frame 13, allowing the top frame 13 to also have a breathable effect, thus increasing the overall breathable area of ​​the device and achieving better oxygen replenishment. By setting up the inner mesh 14, not only is it easier to remove fish and shrimp, but it also restricts their movement range, preventing them from touching and damaging the microporous inner layer 2. In use, fill the frame with oxygenated clean water, then place the live fish and shrimp in the inner mesh 14, and tighten the sealing cap 16.

[0022] Preferably, the microporous inner layer 2 is a polytetrafluoroethylene (PTFE) membrane, while the outer frame 11, bottom frame 12, and top frame 13 are all made of perforated plastic sheets. The use of a PTFE membrane for the microporous inner layer 2 effectively allows oxygen to enter the water tank 1, while simultaneously preventing water from flowing out and preventing the entry of external pollutants. This ensures that fish and shrimp can breathe sufficient oxygen during long-distance transportation and maintains stable water quality. Using perforated plastic sheets as the material for the outer frame 11, bottom frame 12, and top frame 13 provides lightweight, sturdy, and durable properties, enabling it to withstand certain pressure and impacts and protecting the fish and shrimp from external harm. Furthermore, the perforations in the plastic sheets create multiple evenly distributed ventilation holes on the outer side of the water tank 1. In addition, the plastic material has good corrosion resistance, resisting changes in water quality, cleaning agents, and other chemicals, extending the service life of the device.

[0023] Preferably, the microporous inner layer 2 can also be made of polyethylene film with a pore size of 0.1μm-0.5μm. The microporous inner layer 2 with a pore size of 0.1μm-0.5μm allows air to enter the water tank 1 through the inside of the micropores, while water molecules in the water tank cannot permeate out of the device through the microporous inner layer 2. Therefore, sufficient oxygen is ensured to meet the respiratory needs of the fish and shrimp, and there is no need to add water to the water tank 1 during transportation.

[0024] Example 2 Due to the presence of the microporous inner layer 2, the interior of the water tank 1 is connected to the outside air, resulting in poor heat insulation performance of the water tank 1. Therefore, to maintain the water temperature inside the water tank 1 at a suitable level for fish and shrimp transportation, this embodiment also includes a temperature control component, see attached figure. Figure 2 The bottom of the water tank body 1 is provided with a base 31, and the constant temperature regulating component is located in the base 31. The constant temperature regulating component includes a semiconductor cooler 32, a cooler bracket 33, a first heat-conducting plate 34, a second heat-conducting plate 35, a first heat exchanger 36, and a second heat exchanger 37. The semiconductor cooler 32 is embedded in the cooler bracket 33. The first heat-conducting plate 34 is located on the side of the cooler bracket 33 close to the water tank body 1, and the second heat-conducting plate 35 is located on the side of the cooler bracket 33 away from the water tank body 1. The first heat-conducting plate 34 and the second heat-conducting plate 35 are respectively attached to the cold end and the hot end of the semiconductor cooler 32. The first heat exchanger 36 is located on the first heat-conducting plate 34, and the second heat exchanger 37 is located at the bottom of the second heat-conducting plate 35.

[0025] By incorporating a constant temperature control component, the temperature inside the water tank 1 is consistently maintained within the range suitable for the fish and shrimp. This allows the fish and shrimp to better adapt to changes in the external environment during long-distance transportation, reducing stress and mortality risks caused by temperature fluctuations and improving the safety and stability of transportation. The use of a semiconductor refrigerator 32 as the cooling element offers the advantage of small size, enabling efficient heat energy conversion within a limited space. This reduces the overall space occupied by the constant temperature control component, allowing for an increase in the number of stacked layers of the fish and shrimp preservation device in this embodiment, further increasing the transport capacity of live fish and shrimp. By installing a first heat-conducting plate 34 and a first heat exchanger 36 at the cold end of the semiconductor refrigerator 32, heat exchange efficiency is enhanced. This effectively transfers the cooling energy generated by the semiconductor refrigerator 32 through the microporous inner layer 2 at the bottom of the water tank 1 into the water tank 1, achieving rapid temperature regulation and ensuring that the water temperature inside the water tank 1 remains within a suitable range for the fish and shrimp, thereby significantly improving their survival rate and quality. The second heat exchanger 37 and the second heat conduction plate 35 are set at the hot end of the semiconductor cooler 32 to dissipate heat from the semiconductor cooler 32 and ensure the stable operation of the semiconductor cooler 32.

[0026] Furthermore, the constant temperature control component includes a cooling fan 38 and a cooling fan 39. The first heat exchanger 36 is provided with multiple first fins, and the second heat exchanger 37 is provided with multiple second fins. The cooling fan 38 is located between the water tank body 1 and the first heat exchanger 36. The air outlet direction of the cooling fan 39 is parallel to the gap between the second fins. The cooling fan 39 is located on the outside of the base 31. The bottom of the base 31 is provided with a heat insulation buffer pad 4, and the top of the top frame 13 is provided with a fixing block 5 that matches the shape of the base 31.

[0027] The first heat exchanger 36 is equipped with multiple first fins, which greatly increases the heat exchange area and improves the heat exchange efficiency. This allows the cooling fan 38 to more effectively transfer cold energy to the water inside the water tank 1 through the microporous inner layer 2 at the bottom of the water tank 1, improving the efficiency of temperature regulation and ensuring a constant temperature environment inside the water tank 1. The cooling fan 39 is located on the outside of the base 31. This layout not only optimizes the heat dissipation conditions of the semiconductor cooler 32 but also reduces the impact of heat dissipation on the temperature inside the water tank 1. This ensures that the cold air supplied to the water tank 1 and the hot air generated by the semiconductor cooler 32 do not interfere with each other, improving the working efficiency and stability of the constant temperature regulation component. By setting a heat-insulating buffer pad 4 at the bottom of the base 31, heat transfer between the base 31 and the outside of the device is effectively isolated. When using the fish and shrimp survival device of this embodiment in a stacked configuration, the temperature influence between the stacked fish and shrimp survival devices is reduced, maintaining a more stable constant temperature effect and reducing energy consumption. By providing a fixing block 5 at the top of the top frame 13 that matches the shape of the base 31, the matching of the fixing block 5 with the base 31 during transportation can effectively prevent the two fish and shrimp keeping devices stacked on top of each other from shaking or shifting, thus protecting the fish and shrimp inside from damage.

[0028] Preferably, the constant temperature control assembly further includes a first temperature sensor and a second temperature sensor. The first temperature sensor is located between the bottom frame 12 and the first thermal conductive plate 34, and the second temperature sensor is located inside the water tank body 1.

[0029] A first temperature sensor is placed between the bottom frame 12 and the first heat-conducting plate 34 to monitor the temperature of the cold end of the thermoelectric cooler 32 in real time, while a second temperature sensor is placed inside the water tank 1 to monitor the actual temperature of the environment in which the fish and shrimp are located. By obtaining the temperatures from the first and second temperature sensors, the output power of the thermoelectric cooler 32 and the working status of the cooling fan 38 and the cooling fan 39 are adjusted to ensure that the temperature inside the water tank 1 is always maintained within a suitable range for the fish and shrimp, avoiding stress reactions and mortality risks caused by temperature fluctuations. When the temperature is within the set range, the thermoelectric cooler 32, cooling fan 38, and cooling fan 39 stop working, avoiding unnecessary energy consumption and reducing transportation costs. It is also suitable for transporting various fish and shrimp products with different temperature adaptation ranges.

[0030] Preferably, it also includes an environmental monitoring component, which includes an ammonia nitrogen sensor, a salinity sensor, and a water level sensor. The detection probes of the ammonia nitrogen sensor and the salinity sensor are both located inside the water tank body 1. A water level detection box is located on the inner side of one of the outer frames 11. A water passage hole is opened at the bottom of the water level detection box. The water level sensor is located inside the water level detection box. An opening is provided on one side of the water level detection box. The microporous inner layer 2 covers the opening.

[0031] The ammonia nitrogen sensor can monitor the ammonia nitrogen content in tank 1 in real time, preventing fish and shrimp poisoning or death due to excessive ammonia nitrogen. The salinity sensor monitors the salinity level in tank 1, ensuring the water quality meets the survival requirements of the fish and shrimp. When the ammonia nitrogen content or salinity level in tank 1 exceeds the set value, it promptly alerts transport personnel to perform water changes or other operations, minimizing losses caused by fish and shrimp mortality.

[0032] A water level sensor is installed to monitor whether the water level inside the tank 1 is within the normal range, preventing fish and shrimp from dying due to lack of water. A water level detection box is used to fix the water level sensor, and a water passage hole is opened at the bottom of the water level detection box to ensure that the water level inside the box is consistent with the water level inside the tank 1. This fixing method avoids the possibility of the tank 1 being affected by various external forces during transportation, such as vibration and bumps, which could cause changes in the water level and lead to erroneous triggering of the water level sensor.

[0033] Preferably, it also includes a waterproof light strip 8 and a light strip controller; the waterproof light strip 8 is disposed around the top of the outer frame 11, the waterproof light strip 8 is electrically connected to the light strip controller, and the light strip controller is disposed on the top frame 13.

[0034] By wrapping the waterproof light strip 8 around the top of the outer frame 11, a suitable lighting environment can be provided for the fish and shrimp inside the tank 1, improving their survival rate and quality. A light strip controller is installed to adjust the brightness and color temperature of the waterproof light strip 8 to meet the different lighting needs of different types of fish and shrimp.

[0035] Preferably, it also includes a plurality of microporous vibrating plates 6, which are evenly distributed and fixed on the bottom frame 12, and the vibrating end of the microporous vibrating plate 6 is located inside the microporous inner layer 2.

[0036] By positioning the vibrating end of the microporous vibrating plate 6 inside the microporous inner layer 2, it generates minute vibrations when in operation. These vibrations are transmitted to the aquaculture water within the tank 1, thereby promoting water flow, increasing dissolved oxygen levels, and preventing dead zones within the tank 1. This avoids localized oxygen deficiency that could lead to fish and shrimp mortality and prevents the accumulation of harmful substances in the water. Because the vibrations generated by the microporous vibrating plate 6 are weak, they do not disturb the fish and shrimp and help them adapt to environmental changes during transport, reducing stress. By evenly distributing multiple microporous vibrating plates 6 across the bottom frame 12, vibrating water flow is ensured across most of the water within the tank 1, further increasing dissolved oxygen levels.

[0037] Furthermore, it also includes multiple baffles 7, which are evenly distributed on the top of the water tank body 1. The baffles 7 are opposite to the microporous vibrating plate 6, and the baffles 7 have a corrugated structure.

[0038] During operation, due to the presence of the microporous inner layer 2, the water tank 1 is not completely sealed, making water evaporation inevitable. Simultaneously, the operation of the microporous vibrating plate 6 generates atomized water vapor, accelerating the evaporation process. Therefore, this embodiment uses multiple baffles 7 on the inner top of the water tank 1. When the atomized water vapor comes into contact with the baffles 7, it liquefies upon cooling and forms water droplets, which eventually slide into the water tank 1. This prevents environmental changes and triggering of the water level sensor due to water level drops. The baffles 7 are corrugated metal baffles, which also promote droplet merging and enlargement. When multiple small droplets meet on the baffles 7, they converge along the corrugated protrusions, forming larger droplets. These larger droplets are more easily slid off under gravity, further improving the drainage efficiency of the baffles 7.

[0039] This embodiment also proposes a method for using a fish and shrimp survival device, which includes the following steps: injecting oxygenated purified water into the water tank, placing live fish and shrimp in the inner net, and installing a sealing cover. During transportation, oxygen from the air is naturally replenished into the water in the tank through the vents and the inner layer of micropores.

[0040] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A fish and shrimp survival device, characterized in that, The water tank includes multiple outer frames, a bottom frame, a top frame, an inner mesh, an inner frame fixing bracket, a sealing cover, and a microporous inner layer. The multiple outer frames, the bottom frame, and the top frame are assembled to form a water tank body. The top frame has an opening for taking out and putting in. The inner frame fixing bracket is connected to the inner side of the opening for taking out and putting in. The fixing part of the inner mesh is connected to the inner frame fixing bracket, so that the inner mesh is fixed in the water tank body. The sealing cover is detachably connected to the top of the inner frame fixing bracket. Multiple vent holes are evenly opened on the outer side of the water tank body. The inner side of the outer frame is covered with a highly breathable but waterproof microporous inner layer. The microporous inner layer is a polytetrafluoroethylene membrane, and the outer frame, the bottom frame, and the top frame are all made of perforated plastic sheets; The pore size of the microporous inner layer is 0.1μm-0.5μm.

2. The fish and shrimp survival device according to claim 1, characterized in that, It also includes a thermostatic control component. The bottom of the water tank body is provided with a base, and the thermostatic control component is disposed in the base. The thermostatic control component includes a semiconductor cooler, a cooler bracket, a first heat-conducting plate, a second heat-conducting plate, a first heat exchanger, and a second heat exchanger. The semiconductor cooler is embedded in the cooler bracket. The first heat-conducting plate is disposed on the side of the cooler bracket close to the water tank body, and the second heat-conducting plate is disposed on the side of the cooler bracket away from the water tank body. The first heat-conducting plate and the second heat-conducting plate are respectively attached to the cold end and the hot end of the semiconductor cooler. The first heat exchanger is disposed on the first heat-conducting plate, and the second heat exchanger is disposed at the bottom of the second heat-conducting plate.

3. The fish and shrimp survival device according to claim 2, characterized in that, The constant temperature control component includes a cooling fan and a cooling fan. The first heat exchanger is provided with multiple first fins, and the second heat exchanger is provided with multiple second fins. The cooling fan is located between the water tank body and the first heat exchanger. The air outlet direction of the cooling fan is parallel to the gap between the second fins. The cooling fan is located on the outside of the base. The bottom of the base is provided with a heat insulation buffer pad. The top of the top frame is provided with a fixing block that matches the shape of the base.

4. The fish and shrimp survival device according to claim 2, characterized in that, The constant temperature control assembly also includes a first temperature sensor and a second temperature sensor. The first temperature sensor is located between the bottom frame and the first heat conduction plate, and the second temperature sensor is located inside the water tank.

5. The fish and shrimp survival device according to claim 1, characterized in that, It also includes an environmental monitoring component, which includes an ammonia nitrogen sensor, a salinity sensor, and a water level sensor. The detection probes of the ammonia nitrogen sensor and the salinity sensor are both located inside the water tank. A water level detection box is located inside one of the outer frames. A water passage hole is opened at the bottom of the water level detection box. The water level sensor is located inside the water level detection box. An opening is provided on one side of the water level detection box. The microporous inner layer covers the opening.

6. The fish and shrimp preservation device according to claim 1, characterized in that, It also includes a waterproof light strip and a light strip controller; the waterproof light strip is provided around the top of the outer frame, the waterproof light strip is electrically connected to the light strip controller, and the light strip controller is located on the top frame.

7. The fish and shrimp survival device according to claim 1, characterized in that, It also includes multiple microporous vibrating plates and multiple baffles. The multiple microporous vibrating plates are evenly distributed and fixed on the bottom frame. The vibrating end of the microporous vibrating plate is located on the inner side of the microporous inner layer. The multiple baffles are evenly distributed on the top of the water tank body. The baffles are vertically opposite to the microporous vibrating plates. The baffles have a corrugated structure.

8. A method of using the fish and shrimp preservation device as described in any one of claims 1-7, characterized in that, The method includes the following steps: injecting oxygenated purified water into the water tank, placing live fish and shrimp in the inner net, and installing a sealed cover. During transportation, oxygen from the air is naturally replenished into the water in the tank through the vents and the inner layer of micropores.

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