Water circulation system for aquatic transport vehicle

Abstract

The water circulation system of the aquatic product transport vehicle relates to the technical field of water treatment and comprises a water pool, a gas-liquid mixer located above the liquid surface in the water pool, a partition plate fixed horizontally in the water pool and forming an impurity cleaning channel between the partition plate and the bottom of the water pool, an entering structure connected with the impurity cleaning channel on the partition plate, a plurality of water inlet pipes connected with the impurity cleaning channel and fixed on the partition plate in parallel, a self-cleaning filter connected with the outlet end of the water inlet pipe, and the outlet end of the self-cleaning filter connected with the gas-liquid mixer. The water circulation system solves the problem that the aquatic product transport vehicle is limited by the fixed water pumping pipeline at the bottom of the water pool in the traditional technology, the corners of the pool bottom form a blind area of circulation, the accumulated pollutants of the water product metabolism are difficult to be pumped away, the water pool is not completely cleaned, and bacteria are bred.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and more specifically to a water circulation system for aquatic product transport vehicles. Background Technology

[0002] The main function of aquatic product transport vehicles is to ensure that aquatic products remain fresh and hygienic during transportation, while improving transportation efficiency and survival rate. Aquatic product transport vehicles are suitable for transporting various live aquatic products, including high-density, long-term, and long-distance live transportation of freshwater and marine fish, shrimp, crabs, shellfish, and other aquatic animals. Water quality control in the tanks of aquatic product transport vehicles is crucial in aquatic product transportation. The cleanliness and oxygen content of the tank water directly affect the survival rate of aquatic products. A reasonable and efficient water circulation system can promptly clean the metabolic waste of aquatic products, replenish oxygen, provide an excellent living environment for aquatic products, reduce the occurrence of diseases, and extend their survival time.

[0003] As existing technologies are used, their shortcomings have gradually become apparent, mainly in the following aspects: First, the aquatic product transport vehicles are limited by the water pumping pipes fixed at the bottom of the pool, which creates circulation blind spots at the corners of the pool bottom. It is difficult to remove the waste from the aquatic products' metabolism, resulting in incomplete cleaning of the pool and the growth of bacteria.

[0004] Secondly, because the water tanks of aquatic product transport vehicles need to be insulated, a large portion of the water temperature energy is lost during the external water circulation process after being treated by the external water circulation system. This has a significant impact on the water temperature control and also wastes energy.

[0005] Third, the existing water tanks use a water circulation system for pumping and returning water, which keeps the water in a state of high flow. This stimulates aquatic products, causing them to swim violently, affecting their rest and reducing their survival rate.

[0006] Fourth, the external water circulation system oxygenates the water externally. During the return water circulation process, some oxygen is lost. Moreover, the oxygen concentration is high near the return water pipe and low in areas further away from the pipe, resulting in uneven oxygen concentration throughout the pool. This leads to oxygen deficiency in areas with high aquatic product density.

[0007] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this invention provides a water circulation system for aquatic product transport vehicles. This system solves the problem that traditional aquatic product transport vehicles are limited by the fixed water pumping pipes at the bottom of the pool, resulting in circulation blind spots at the corners of the pool bottom. As a result, waste from aquatic product metabolism accumulates and is difficult to remove, leading to incomplete pool cleaning and bacterial growth.

[0009] To achieve the above objectives, the present invention provides the following technical solution: The aquatic product transport vehicle's water circulation system includes a water tank, inside which is a gas-liquid mixer located above the liquid surface. A partition plate is horizontally fixed inside the water tank, forming a debris cleaning channel between the partition plate and the bottom of the water tank. The partition plate is provided with an access structure that communicates with the debris cleaning channel. Several water supply pipes connected to the impurity cleaning channel are fixed in parallel on the partition plate. The outlet end of the water supply pipe is connected to a self-cleaning filter, and the outlet end of the self-cleaning filter is connected to the gas-liquid mixer.

[0010] As an optimized solution, the self-cleaning filter includes a housing fixed to the gas-liquid mixer, a filter structure is provided inside the housing, the bottom of the housing is connected to the inner cavity of the gas-liquid mixer, and a sludge pumping pipe is vertically fixed inside the housing above the filter structure.

[0011] As an optimized solution, a sludge thickness detection sensor located above the filter structure is fixed to the inner wall of the housing.

[0012] As an optimized solution, the outlet end of the water supply pipe is fixedly connected to a water distribution pipe located above the housing and arranged in an inverted U-shape, and a flow sensor is installed inside the water distribution pipe.

[0013] As an optimized solution, the entry structure includes several liquid inlets located at the center of the partition plate, and a suction pump is provided in the area below the liquid inlets of the impurity cleaning channel. The inlet end of the suction pump is connected to the liquid inlets, and the outlet end of the suction pump is connected to the impurity cleaning channel.

[0014] As an optimized solution, a rhomboid-shaped guide plate is fixedly connected to the impurity cleaning channel along the top view direction, and four water supply pipes are arranged side by side. The corner of the guide plate is provided with a water inlet connected to the inlet end of the water supply pipe.

[0015] As an optimized solution, the gas-liquid mixer includes a box fixedly installed above the liquid surface of the water tank. The bottom surface of the box is evenly distributed with liquid equalization holes. An oxygen supply pipe is fixedly connected to the top of the box. The outlet end of the oxygen supply pipe extends into the box and is fixedly connected with an air stone. The air stone is located in the area below the liquid surface of the box.

[0016] As an optimized solution, the inlet end of the oxygen delivery pipeline is connected to an oxygen supply unit, and an electric proportional valve for oxygen supply is connected to the oxygen delivery pipeline.

[0017] As an optimized solution, an oxygen content detection sensor is fixedly installed on the inner wall of the pool.

[0018] As an optimized solution, a sludge pump is connected to the outlet end of the sludge pumping pipe.

[0019] As an optimized solution, the height of the upper surface of the partition plate is set to gradually decrease from the outside to the center.

[0020] Compared with the prior art, the beneficial effects of the present invention are: By setting up a partition plate and using a suction pump, the liquid inside the pool is sucked into the impurity cleaning channel. The upper surface of the partition plate is set with a gradually decreasing height from the outside to the center, so that the impurities at the bottom of the pool can be completely guided into the impurity cleaning channel by the water flow and the inclined upper surface of the partition plate. There are no dead corners or blind spots, which can realize the timely and thorough removal of impurities in the pool water, reduce the impact of impurities and excrement on the breeding environment, and improve the survival rate of aquatic products. Impurities in the pool are discharged into a self-cleaning filter through a water inlet pipe. The aquaculture water filtered by the self-cleaning filter is then returned to the pool through a gas-liquid mixer. This reduces the temperature loss caused by external water circulation in traditional technology, resulting in smaller fluctuations in water temperature in the pool, reducing the irritation to aquatic products, improving the survival rate of aquatic products, and reducing energy consumption. By installing a flow sensor inside the water distribution pipe, the flow rate can be detected. According to the water flow requirements of different aquatic products, the flow rate of the suction pump can be adjusted to mimic the natural environment. The flow in the entire pool is slow, which minimizes the stimulation to aquatic products and provides them with a quiet resting environment, thereby improving the survival rate of aquatic products. By connecting the self-cleaning filter to the gas-liquid mixer, the filtered aquaculture water can be aerated. Through the microporous structure on the air stone, the oxygen introduced by the oxygen supply unit is evenly dispersed, allowing it to fully contact the filtered aquaculture water before flowing evenly into the pool through the equalization holes. This ensures that the oxygen and aquaculture water are mixed efficiently and evenly. The system is also equipped with an oxygen content detection sensor to monitor the oxygen concentration in the pool, preventing both oxygen deficiency and excess, and improving the survival rate of aquatic products. Furthermore, as the aquaculture water falls through the equalization hole, it can come into contact with the outside air again, further improving the oxygenation efficiency. As impurities gradually accumulate inside the self-cleaning filter and reach a certain height, the sludge thickness detection sensor activates to remove the impurities. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the guide plate of the present invention; Figure 3 This is a schematic diagram of the gas-liquid mixer of the present invention.

[0023] In the diagram: 1-Water tank; 2-Baffle plate; 3-Impact cleaning channel; 4-Liquid inlet; 5-Liquid suction pump; 6-Water supply pipe; 7-Water distribution pipe; 8-Flow sensor; 9-Self-cleaning filter; 10-Sludge thickness detection sensor; 11-Filter structure; 12-Sludge pumping pipe; 13-Box body; 14-Air stone; 15-Oxygen supply pipe; 16-Oxygen supply unit; 17-Oxygen supply electric proportional valve; 18-Sludge pump; 19-Baffle plate; 20-Water inlet; 21-Equalization hole; 22-Oxygen content detection sensor. Detailed Implementation

[0024] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0025] like Figures 1 to 3 As shown, the aquatic product transport vehicle's water circulation system includes a water tank 1, inside which is a gas-liquid mixer located above the liquid surface. A partition plate 2 is horizontally fixed inside the water tank 1, forming an impurity cleaning channel 3 between the partition plate 2 and the bottom of the water tank 1. The partition plate 2 is provided with an access structure that communicates with the impurity cleaning channel 3. Several water supply pipes 6, which are connected to the impurity cleaning channel 3, are fixedly connected in parallel on the partition plate 2. The outlet end of the water supply pipe 6 is connected to a self-cleaning filter, and the outlet end of the self-cleaning filter is connected to a gas-liquid mixer.

[0026] The self-cleaning filter 9 includes a housing fixed to a gas-liquid mixer, a filter structure 11 inside the housing, the bottom of the housing being connected to the inner cavity of the gas-liquid mixer, and a sludge suction pipe 12 vertically fixed inside the housing above the filter structure 11.

[0027] A sludge thickness detection sensor 10 is fixed to the inner wall of the housing, located above the filter structure 11.

[0028] The outlet end of the water inlet pipe 6 is fixedly connected to a water distribution pipe 7 located above the housing and arranged in an inverted U-shape. A flow sensor 8 is installed inside the water distribution pipe 7.

[0029] The entry structure includes several liquid inlets 4 located at the center of the partition plate 2. A suction pump 5 is provided in the area below the liquid inlets 4 in the impurity cleaning channel 3. The inlet end of the suction pump 5 is connected to the liquid inlets 4, and the outlet end of the suction pump 5 is connected to the impurity cleaning channel 3.

[0030] Inside the impurity cleaning channel 3, a rhomboid-shaped guide plate 19 is fixedly connected along the top view direction. Four water supply pipes 6 are arranged side by side. A water inlet 20 connected to the inlet end of the water supply pipe 6 is opened at the corner of the guide plate 19.

[0031] The gas-liquid mixer includes a box 13 fixedly installed above the liquid surface of the water tank. Liquid equalization holes 21 are evenly distributed on the bottom surface of the box 13. An oxygen supply pipe 15 is fixedly connected to the top of the box 13. The outlet end of the oxygen supply pipe 15 extends into the box 13 and is fixedly connected to an air stone 14. The air stone 14 is located in the area below the liquid surface of the box 13.

[0032] An oxygen supply unit 16 is connected to the inlet end of the oxygen supply pipeline 15, and an electric proportional valve 17 for oxygen supply is connected to the oxygen supply pipeline 15.

[0033] An oxygen content detection sensor 22 is fixedly installed on the inner wall of the water tank 1.

[0034] The outlet end of the sludge pumping pipe 12 is connected to a sludge pump 18.

[0035] The height of the upper surface of the partition plate 2 gradually decreases from the outside to the center.

[0036] By setting up a partition plate 2 and using a suction pump 5, the liquid inside the pool 1 is sucked into the impurity cleaning channel 3. The upper surface of the partition plate 2 is set with a gradually decreasing height from the outside to the center, so that the impurities at the bottom of the pool 1 can be completely guided into the impurity cleaning channel 3 by the water flow and the inclined upper surface of the partition plate 2. There are no dead corners or blind spots, so that the impurities in the water in the pool 1 can be removed in a timely and thorough manner, reducing the impact of impurities and excrement on the breeding environment and improving the survival rate of aquatic products. Impurities in the water tank 1 are discharged into the self-cleaning filter 9 through the water supply pipe 6. The aquaculture water filtered by the self-cleaning filter 9 is then returned to the water tank 1 through the gas-liquid mixer. This reduces the temperature loss caused by the external water circulation system in traditional technology, resulting in smaller fluctuations in the water temperature in the water tank 1, reducing the irritation to aquatic products, improving the survival rate of aquatic products, and reducing energy consumption. By installing a flow sensor 8 inside the water distribution pipe 7, the flow rate can be detected. According to the water flow requirements of different aquatic products, the flow rate of the suction pump 5 can be adjusted to mimic the natural environment. The flow in the entire pool 1 is slow, which is less stimulating to aquatic products and provides them with a quiet resting environment, thereby improving the survival rate of aquatic products. By connecting the self-cleaning filter 9 to the gas-liquid mixer, the filtered aquaculture water can be aerated. Through the microporous structure on the air stone 14, the oxygen introduced by the oxygen supply unit 16 is evenly dispersed, so that it can fully contact the filtered aquaculture water and then flow evenly into the water tank through the equalization hole 21, so that the oxygen and aquaculture water are efficiently and evenly mixed. An oxygen content detection sensor 22 is also provided to monitor the oxygen concentration in the water tank 1, avoid the occurrence of hypoxia and hyperxia, and improve the survival rate of aquatic products. Furthermore, as the aquaculture water falls through the equalization hole 21, it can come into contact with the outside air again, further improving the oxygenation efficiency. Impurities gradually accumulate inside the self-cleaning filter 9 until they reach a certain height. When they reach the height of the sludge thickness detection sensor 10, the sludge pump 18 is started to suck away the impurities.

[0037] The working principle of this system is as follows: The suction pump 5 is installed in the impurity cleaning channel 3 below the partition plate 2. The size of the inlet 4 should be less than two-thirds of the width of the smallest aquatic product to prevent the aquatic product from being sucked into the inlet 4. The suction pump 5 rotates under the drive of the variable frequency speed control system, causing the water in the impurity cleaning channel 3 to rotate and generate centrifugal force to spread in all directions; the water spread by centrifugal force flows to the water inlet 20 under the action of the rhomboid guide plate 19, and reaches the self-cleaning filter 9 through the water inlet pipe 6. The water distribution pipe 7 is equipped with a flow sensor 8 to detect the water flow speed. The speed of the suction pump 5 is adjusted by frequency conversion speed regulation to keep the pool water quiet and avoid adverse interference and stimulation to aquatic products. The aquaculture water flowing into the self-cleaning filter passes through the filter structure 11, where metabolic waste from aquatic products is filtered and separated. The purified aquaculture water then flows into the gas-liquid mixer through the lower end of the self-cleaning filter. Impurities gradually accumulate inside the self-cleaning filter 9 until they reach a certain height. When they reach the height of the sludge thickness detection sensor 10, the sludge pump 18 is started to suck away the impurities. The bottom of the gas-liquid mixer is densely covered with equalization holes 21. The speed at which the liquid falls through the equalization holes 21 is less than the speed at which the liquid enters the gas-liquid mixer, so there will be a liquid level in the gas-liquid mixer. The gas stone 14 is submerged in the area below the liquid level. The oxygen supply unit 16 delivers oxygen to the gas stone 14 through the oxygen delivery pipe 15. The oxygen is evenly sprayed out through the gas stone 14 and fully contacts and dissolves with the water in the gas-liquid mixer. The oxygenated and purified water is driven by the liquid suction pump 5 along the surface of the water tank 1 and slowly circulates to the bottom of the tank. In this way, the oxygen is evenly distributed along the direction of water flow. According to the different densities of aquatic product transportation, the oxygen content detection sensor 22 monitors the oxygen content in the middle of the pool 1, and adjusts the oxygen supply through the oxygen supply electric proportional valve 17 to make the oxygen concentration in the pool 1 suitable. After the aquatic products consume oxygen and the pool water contains excrement, it flows to inlet 4 to continue circulating for cleaning and oxygenation, and so on.

[0038] All of the above-mentioned power-consuming components are powered by the onboard battery or engine of the aquatic product transport vehicle.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A water circulation system for aquatic product transport vehicles, characterized in that: Includes a water tank (1), inside which is a gas-liquid mixer located above the liquid surface. A partition plate (2) is horizontally fixed inside the water tank (1), and a debris cleaning channel (3) is formed between the partition plate (2) and the bottom of the water tank (1). The partition plate (2) is provided with an entry structure that communicates with the debris cleaning channel (3). Several water inlet pipes (6) connected to the impurity cleaning channel (3) are fixedly connected side by side on the partition plate (2). The outlet end of the water inlet pipe (6) is connected to a self-cleaning filter (9), and the outlet end of the self-cleaning filter (9) is connected to the gas-liquid mixer. The impurity cleaning channel (3) is fixed with a rhomboid guide plate (19) in the top view direction. Four water supply pipes (6) are arranged in parallel. The corner of the guide plate (19) is provided with a water inlet (20) connected to the inlet end of the water supply pipe (6). The gas-liquid mixer includes a box (13) fixedly installed above the liquid surface of the water tank (1). The bottom surface of the box (13) is evenly distributed with liquid equalization holes (21). An oxygen supply pipe (15) is fixedly connected to the top of the box (13). The outlet end of the oxygen supply pipe (15) extends into the box (13) and is fixedly connected with an air stone (14). The air stone (14) is located in the area below the liquid surface of the box (13). The height of the upper surface of the partition plate (2) gradually decreases from the outside to the center.

2. The water circulation system for aquatic product transport vehicles according to claim 1, characterized in that: The self-cleaning filter (9) includes a housing fixed to the gas-liquid mixer, a filter structure (11) is provided inside the housing, the bottom of the housing is connected to the inner cavity of the gas-liquid mixer, and a sludge pumping pipe (12) is vertically fixed inside the housing above the filter structure (11).

3. The water circulation system for aquatic product transport vehicles according to claim 2, characterized in that: A sludge thickness detection sensor (10) is fixed to the inner wall of the housing and located above the filter structure (11).

4. The water circulation system for aquatic product transport vehicles according to claim 2, characterized in that: The outlet end of the water supply pipe (6) is fixedly connected to a water distribution pipe (7) located above the housing and arranged in an inverted U-shape. A flow sensor (8) is provided inside the water distribution pipe (7).

5. The water circulation system for aquatic product transport vehicles according to claim 1, characterized in that: The entry structure includes a plurality of liquid inlets (4) located at the center of the partition plate (2). The impurity cleaning channel (3) is provided with a suction pump (5) in the area below the liquid inlets (4). The inlet end of the suction pump (5) is connected to the liquid inlets (4), and the outlet end of the suction pump (5) is connected to the impurity cleaning channel (3).

6. The water circulation system for aquatic product transport vehicles according to claim 5, characterized in that: The oxygen supply pipe (15) is connected to an oxygen supply unit (16) at its inlet end, and an oxygen supply electric proportional valve (17) is connected to the oxygen supply pipe (15).

7. The water circulation system for aquatic product transport vehicles according to claim 1, characterized in that: An oxygen content detection sensor (22) is fixedly installed on the inner wall of the pool (1).

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