A live fish preservation and transportation device with a gradient compartmentalized anti-collision structure

Abstract

This invention relates to the field of live fish transportation technology, specifically to a live fish preservation and transportation device with a gradient-compartment anti-collision structure. It includes an outer casing and a fish storage module. The fish storage module includes an inner casing movably installed inside the outer casing. The inner casing contains multiple fish compartments of varying lengths, and the top of the inner casing is covered with a sealing cap. During live fish transportation, this invention divides the fish into compartments according to size and species, preventing cross-competition and reducing collisions, squeezing, biting, and stress injuries. Accelerometers and gyroscopes are used to detect the acceleration and angular velocity of the inner casing. A controller then controls the tilt angle of the inner casing via a lifting assembly, keeping it level during transportation. This reduces tilting and bumping, improving stability, minimizing stress damage to the live fish, and further increasing the survival rate during transport.

Description

Technical Field

[0001] This invention relates to the field of live fish transportation technology, specifically to a live fish preservation and transportation device with a gradient compartment structure to prevent mutual injury. Background Technology

[0002] Live fish transportation is an indispensable part of fisheries production. In aquaculture, the introduction and exchange of broodstock, the sale of fry and fingerlings, and the transport and marketing of marketable live fish all rely on live fish transportation. Live fish transportation has always been a challenge for the aquaculture industry because fish frequently die during transport, resulting in economic losses.

[0003] The key to live fish transportation is ensuring the fish are alive; improving the survival rate and efficiency of transportation is the core of this process. Commercial fish are typically transported in fiberglass or welded steel containers filled with water and fish. However, during transportation, road bumps, vehicle turns, and braking often cause the containers, water, and fish inside to shake. Live fish are easily stressed by this shaking, leading to collisions, squeezing, and biting, causing injury and affecting the survival rate during transport. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a live fish preservation and transportation device with a gradient compartment structure to prevent mutual injury. The device includes an outer casing and a fish storage module. The fish storage module includes an inner casing that is movably installed inside the outer casing. The inner casing contains multiple fish compartments with gradient lengths, and the top of the inner casing is covered with a sealing cap.

[0005] The shock absorption module includes several acceleration sensors fixedly installed at the four corners of the bottom of the inner box and a gyroscope sensor in the center of the bottom. A controller is fixedly installed inside the outer box. A lifting component for adjusting the tilt angle of the inner box, a centering component for elastically supporting the inner box, and a buffer spring are also fixedly installed inside the outer box.

[0006] An oxygen supply module includes telescopic airbags fixedly installed in the four corner areas of the bottom of the inner tank. An air supply pipe communicating with the inside of the fish tank is installed at the bottom of the tank. An air collection component for transporting gas is installed between the telescopic airbags and the air supply pipe.

[0007] The feces suction module includes a curved pipe fixedly installed inside the fish tank for sucking up the lower layer of feces, the top end of the air supply pipe extends into the inside of the curved pipe, and a water filter assembly is installed on the top of the curved pipe.

[0008] In one possible implementation, a perforated bottom plate is fixedly installed inside the fish tank, the perforated bottom plate dividing the bottom of the fish tank into a manure-separating chamber, and a wedge-shaped plate is fixedly installed inside the manure-separating chamber, the height of the wedge-shaped plate decreasing from back to front.

[0009] In one possible implementation, the fish tank has several slots evenly spaced on both the left and right inner walls, the slots are located above the perforated bottom plate, and several perforated partitions evenly spaced on both the front and back are detachably installed inside the fish tank. The perforated partitions are inserted into the corresponding slots, and rubber buffer layers are attached to both the front and back sides of the perforated partitions.

[0010] In one possible implementation, the lifting assembly includes two servo cylinders arranged in a V-shape, with a connecting seat hinged to the bottom end of each servo cylinder. The connecting seat is fixedly installed on the inner bottom wall of the outer housing. A universal joint is hinged to the top end of the telescopic section of each servo cylinder, and the top of the universal joint is fixedly connected to the bottom of the inner housing.

[0011] In one possible implementation, the accelerometer, gyroscope, and servo cylinder are all electrically connected to the controller. The accelerometer and gyroscope detect the acceleration and angular velocity of the inner box during movement and convert them into electrical signals that are transmitted to the controller. The controller processes the electrical signals from the accelerometer and gyroscope and controls the servo cylinder to adjust the height of the corresponding area of ​​the inner box.

[0012] In one possible implementation, the centering assembly includes a resilient telescopic rod fixedly mounted on the bottom wall of the outer casing, the top end of the telescopic section of the resilient telescopic rod being connected to the bottom of the inner casing via a fixedly connected ball joint.

[0013] In one possible implementation, the air collection assembly includes a three-way pipe fixedly connected to and communicating with the bottom of the telescopic airbag. The bottom of the three-way pipe is fixedly connected to the inner bottom wall of the outer casing. One-way valve 1 and one-way valve 2 are respectively installed at the left and right ends of the three-way pipe. One-way valve 1 is an air inlet valve and one-way valve 2 is an air outlet valve. An air supply pipe is fixedly connected to the end of one-way valve 2 away from the three-way pipe. Several air supply pipes are connected to an air collection pipe at the ends away from the corresponding one-way valve 2. The bottom end of the air supply pipe is fixedly connected to and communicating with the air collection pipe.

[0014] In one possible implementation, a suction nozzle is fixedly connected to the bottom end of the vertical section of the bend after extending into the interior of the manure-separating chamber. The suction nozzle is located in front of the wedge plate. An air stone is fixedly installed at the top end of the air supply pipe after penetrating into the interior of the vertical section of the bend. The water filtration assembly is installed on the bend section at the top of the bend.

[0015] In one possible implementation, the water filtration assembly includes a housing threaded onto the port of a bend in a pipe, the bottom of the housing having a plurality of drain holes, the interior of which filter cotton is removably installed.

[0016] The beneficial effects of this invention are as follows: 1. During the transportation of live fish, this invention classifies and stores them according to their size and species to avoid cross-class injury and reduce collisions, squeezing, biting, and stress damage. At the same time, it uses accelerometers and gyroscopes to detect the acceleration and angular velocity of the inner box. The accelerometers and gyroscopes then transmit the detected signals to the controller. The controller controls the tilt angle of the inner box by controlling the lifting assembly, so that the inner box remains horizontal during transportation, reducing tilting and bumping, which helps maintain the stability of the inner box, reduces stress damage to live fish, and further improves the survival rate during transportation.

[0017] 2. When the inner box is balanced, the distance between the inner and outer boxes will change. At this time, the inner box will continuously compress and stretch the telescopic airbag. The telescopic airbag delivers air to the air supply pipe through the air collection component. Then the air supply pipe delivers the air to the fish tank, which can replenish oxygen in the fish tank and prevent the live fish from lacking oxygen. When the air supply pipe delivers air to the fish tank, since the top of the air supply pipe is located in the bend, as the air rises, the liquid inside the bend will flow upward. At this time, the bottom of the bend will generate suction, which uses the bend to suck up the fish feces at the bottom of the fish tank. This can remove the fish feces in the fish tank in time, which helps to slow down the deterioration of the water and further improve the survival rate of live fish during transportation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the inner box of the present invention.

[0020] Figure 3 This is a cross-sectional view of the front of the fish storage module of the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the shock absorption module of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the oxygen supply module of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the lifting component of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the centering component of the present invention.

[0025] Figure 8 This is a three-dimensional structural diagram of the telescopic airbag and the three-way tube of the present invention.

[0026] Figure 9 This is a cross-sectional view of the left side of the fish storage module of the present invention.

[0027] Figure 10 This is a plan view of the fecal suction module of the present invention.

[0028] In the diagram: 1. Outer casing; 2. Fish storage module; 21. Inner casing; 22. Fish hold; 221. Slot; 23. Perforated partition; 231. Rubber buffer layer; 24. Perforated bottom plate; 25. Manure separation chamber; 251. Wedge plate; 26. Sealing cover; 3. Shock absorption module; 31. Accelerometer sensor; 32. Gyroscope sensor; 33. Controller; 34. Lifting assembly; 341. Servo cylinder; 342. Connecting seat; 343. Universal joint; 35. Centering assembly; 351 1. Elastic telescopic rod; 352. Ball joint; 36. Buffer spring; 4. Oxygen supply module; 41. Telescopic airbag; 42. Air supply pipe; 421. Air stone; 43. Air collection assembly; 431. T-pipe; 432. One-way valve one; 433. One-way valve two; 434. Air delivery pipe; 435. Air collection pipe; 5. Sewage suction module; 51. Bend; 52. Sewage suction nozzle; 53. Water filter assembly; 531. Housing; 532. Drain hole; 533. Filter cotton; 6. Heat insulation buffer layer. Detailed Implementation

[0029] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Please see Figure 1 - Figure 10 A live fish preservation and transportation device with a gradient compartment anti-mutual-damage structure includes an outer box 1 and a fish storage module 2. The fish storage module 2 includes an inner box 21 movably installed inside the outer box 1. The inner box 21 has multiple fish compartments 22 with gradient lengths, the length of which increases from left to right. The top of the inner box 21 is also covered with a sealing cover 26. The outer side of the inner box 21 is also equipped with a heat insulation buffer layer 6, which is made of polyester foam material and can play a role in heat insulation and buffering, reducing water temperature fluctuations.

[0031] The shock absorption module 3 includes several acceleration sensors 31 fixedly installed in the four corner areas of the bottom of the inner box 21 and a gyroscope sensor 32 in the center area of ​​the bottom. A controller 33 is fixedly installed inside the outer box 1. A lifting component 34 for adjusting the tilt angle of the inner box 21, a centering component 35 for elastically supporting the inner box 21, and a buffer spring 36 are also fixedly installed inside the outer box 1.

[0032] The oxygen supply module 4 includes telescopic airbags 41 fixedly installed in the four corner areas at the bottom of the inner box 21. An air supply pipe 42 communicating with the inside of the fish tank 22 is installed at the bottom. An air collection component 43 for conveying gas is installed between the telescopic airbags 41 and the air supply pipe 42.

[0033] The feces suction module 5 includes a curved pipe 51 fixedly installed inside the fish tank 22 for sucking up the lower layer of feces. The top end of the air supply pipe 42 extends into the inside of the curved pipe 51, and a water filter assembly 53 is installed on the top of the curved pipe 51.

[0034] In practical use, live fish of different types and sizes are placed in fish compartments 22 of different lengths, and then the sealing cap 26 is placed on the top of the inner box 21 for sealing. The live fish are graded and compartmented according to their size and type to avoid cross-level injury, reduce collisions, squeezing, biting and stress damage between fish, and improve the survival rate during long-distance transportation.

[0035] During transportation, the acceleration and angular velocity of the inner box 21 are detected using an accelerometer 31 and a gyroscope 32. The detected signals are then transmitted to a controller 33. The controller 33 controls the tilt angle of the inner box 21 via a lifting assembly 34, ensuring the inner box 21 remains horizontal during transportation. Specifically, when bumps occur during transportation, one side of the outer box 1 tilts downwards, causing the inner box 21 within the outer box 1 to tilt along with it. At this time, the corresponding accelerometer 31 and gyroscope 32 detect the inner box... The controller 33 determines the direction and angle of inclination of the inner box 21 based on the acceleration and angular velocity generated on the corresponding side of the inner box 21 when it is tilted. Then, the controller 33 controls the lifting component 34 to push the inner box 21 on the downward tilting side and pull the inner box 21 on the upward tilting side, so that the inner box 21 is always kept in a horizontal state. At the same time, the centering component 35 and the buffer spring 36 provide elastic buffering for the inner box 21, reducing the tilting and bumping of the inner box 21, which helps to maintain the stability of the inner box 21, reduce stress damage to live fish, and further improve the survival rate during transportation.

[0036] When there is a bump, the outer box 1 will tilt repeatedly. When the lifting component 34 pushes or pulls the inner box 21, the distance between the inner box 21 and the outer box 1 will increase or decrease. At this time, the inner box 21 will continuously compress and stretch the telescopic airbag 41, so that the telescopic airbag 41 delivers air to the air supply pipe 42 through the air collection component 43. Then the air supply pipe 42 delivers the air to the fish tank 22, which can replenish oxygen in the fish tank 22 and prevent the live fish from lacking oxygen. The telescopic airbag 41 is driven by the change in the distance between the inner box 21 and the outer box 1 to replenish oxygen. There is no need to use an oxygen pump for oxygenation, which can reduce noise and operating costs.

[0037] When the air supply pipe 42 delivers air into the fish tank 22, since the top of the air supply pipe 42 is located in the bend 51, as the air rises, according to Bernoulli's principle, the liquid inside the bend 51 will flow upward. At this time, the bottom of the bend 51 will generate a suction force, which will draw in the fish feces at the bottom of the fish tank 22. The fish feces will flow upward with the water flow in the bend 51 into the water filter assembly 53 for filtration. This can remove the fish feces in the fish tank 22 in a timely manner, which helps to slow down the deterioration of water quality and further improve the survival rate of live fish during transportation.

[0038] Please see Figure 2 , Figure 3 and Figure 9 A perforated bottom plate 24 is fixedly installed inside the fish tank 22. The perforated bottom plate 24 divides the bottom of the fish tank 22 into a manure-separating chamber 25. A wedge plate 251 is fixedly installed inside the manure-separating chamber 25. The height of the wedge plate 251 decreases from back to front.

[0039] In practical use, a manure-separating chamber 25 is set at the bottom of the fish tank 22 to isolate fish feces. The fish feces produced in the fish tank 22 can enter the manure-separating chamber 25 through the through holes on the porous bottom plate 24, avoiding direct contact between fish feces and live fish, reducing the possibility of fish feces being broken up when live fish are active, and reducing the pollution of fish feces to the water. The falling fish feces can be collected forward along the wedge plate 251, which is convenient for subsequent suction and filtration of fish feces.

[0040] Please see Figure 2 and Figure 3 The fish tank 22 has several slots 221 that are equidistantly distributed on the left and right inner walls. The slots 221 are located above the perforated bottom plate 24. Several perforated partitions 23 that are equidistantly distributed on the front and back are detachably installed inside the fish tank 22. The perforated partitions 23 are inserted into the corresponding slots 221. Rubber buffer layers 231 are attached to the front and back sides of the perforated partitions 23.

[0041] In practical use, the fish tank 22 is divided by the perforated partition 23, which can further separate the live fish, turning large groups into small groups or individuals, and further reducing friction, collision and stress damage. By inserting the perforated partition 23 into different slots 221, the distance between adjacent perforated partitions 23 can be adjusted, which is convenient for flexible adjustment according to the size of live fish and improves applicability. The rubber buffer layer 231 can prevent live fish from being injured when they collide and improve the survival rate of live fish during transportation.

[0042] Please see Figure 4 - Figure 6 The lifting assembly 34 includes two servo cylinders 341 arranged in a V-shape. The bottom end of the servo cylinder 341 is hinged to a connecting seat 342, which is fixedly installed on the inner bottom wall of the outer housing 1. The top end of the telescopic section of the servo cylinder 341 is hinged to a universal joint 343, and the top of the universal joint 343 is fixedly connected to the bottom of the inner housing 21.

[0043] Please see Figure 4 - Figure 6 Accelerometer 31, gyroscope 32 and servo cylinder 341 are all electrically connected to controller 33. Accelerometer 31 and gyroscope 32 detect the acceleration and angular velocity of the inner box 21 during movement and convert the acceleration and angular velocity into electrical signals, which are then transmitted to controller 33. Controller 33 processes the electrical signals from accelerometer 31 and gyroscope 32 and controls servo cylinder 341 to adjust the height of the corresponding area of ​​the inner box 21.

[0044] In practical use, when the inner box 21 tilts, the acceleration sensor 31 and the gyroscope sensor 32 detect the acceleration and angular velocity generated when the inner box 21 tilts, respectively. The controller 33 determines the direction and angle of the tilt of the inner box 21 based on the acceleration generated on the corresponding side of the inner box 21 and the angular velocity generated when the inner box 21 tilts. Then, the controller 33 sends an electrical signal to the servo cylinder 341 to control the extension and retraction adjustment of the servo cylinder 341. The servo cylinder 341 pushes or stretches the tilted side of the inner box 21 to restore the inner box 21 to a horizontal state. The universal joint 343 can rotate when the servo cylinder 341 extends and retracts, satisfying the angle change between the servo cylinder 341 and the inner box 21.

[0045] Please see Figure 3 , Figure 4 and Figure 7 The centering component 35 includes an elastic telescopic rod 351 fixedly installed on the inner bottom wall of the outer housing 1. The top end of the telescopic section of the elastic telescopic rod 351 is connected to the bottom of the inner housing 21 through a fixed ball joint 352.

[0046] In practical use, the center of the inner box 21 and the outer box 1 is connected by setting an elastic telescopic rod 351 to prevent the inner box 21 from sliding horizontally in the outer box 1. At the same time, the elastic telescopic rod 351 can also buffer the inner box 21 and reduce the vibration of the inner box 21.

[0047] Please see Figure 4 , Figure 5 and Figure 8 The air collection assembly 43 includes a three-way pipe 431 fixedly connected to the bottom of the telescopic airbag 41 and in communication with it. The bottom of the three-way pipe 431 is fixedly connected to the inner bottom wall of the outer casing 1. One-way valve 1 432 and one-way valve 2 433 are respectively installed at the left and right ends of the three-way pipe 431. One-way valve 1 432 is an air inlet valve and one-way valve 2 433 is an air outlet valve. One end of one-way valve 2 433 away from the three-way pipe 431 is fixedly connected to an air supply pipe 434. Several air supply pipes 434 are connected to an air collection pipe 435 at the ends away from the corresponding one-way valve 2 433. The bottom end of the air supply pipe 42 is fixedly connected to and in communication with the air collection pipe 435.

[0048] In practical use, when the telescopic airbag 41 is stretched, it absorbs air. At this time, outside air enters the telescopic airbag 41 through one-way valve 432. When the telescopic airbag 41 is compressed, it discharges air. The air in the telescopic airbag 41 is then transported to the air supply pipe 434 and the air collection pipe 435 through one-way valve 433, and finally transported to the fish tank 22 by the air supply pipe 42 for oxygenation, which is beneficial to the survival of live fish.

[0049] Please see Figure 2 and Figure 9 The bottom end of the vertical section of the bend pipe 51 extends into the interior of the manure chamber 25 and is fixedly connected to a suction nozzle 52. The suction nozzle 52 is located in front of the wedge plate 251. The top end of the air supply pipe 42 extends into the interior of the vertical section of the bend pipe 51 and is fixedly installed with an air stone 421. The water filter assembly 53 is installed on the bend section at the top of the bend pipe 51.

[0050] Please see Figure 9 and Figure 10 The water filtration assembly 53 includes a housing 531 threaded onto the bent section port of the bend pipe 51. The bottom of the housing 531 has several drain holes 532, and filter cotton 533 is detachably installed inside the drain holes 532.

[0051] In practical use, air is supplied to the bend 51 through the air supply pipe 42. The air stone 421 can generate bubbles in the water, increasing the dissolved oxygen content of the water. When the air flows upward, it can drive the water to flow upward, creating a suction force at the suction nozzle 52. The suction nozzle 52 is used to suck up the fish feces in the feces chamber 25. Then the fish feces enter the shell 531 with the water flow. The filter cotton 533 filters the fish feces. Finally, the water is discharged downward from the drain hole 532. By removing fish feces from the water in a timely manner, the deterioration of the water can be slowed down, the survival rate of live fish can be improved, and it is beneficial for the long-distance transportation of live fish.

[0052] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A live fish preservation and transportation device with a gradient compartmentalized anti-injury structure, comprising an outer casing (1), characterized in that, Also includes: Fish storage module (2), the fish storage module (2) includes an inner box (21) that is movably installed inside the outer box (1), the inner box (21) is provided with multiple fish tanks (22) with gradient lengths, and the top of the inner box (21) is also covered with a sealing cover (26). The shock absorption module (3) includes several acceleration sensors (31) fixedly installed in the four corner areas of the bottom of the inner box (21) and a gyroscope sensor (32) in the center area of ​​the bottom. The controller (33) is fixedly installed inside the outer box (1). The lifting assembly (34) for adjusting the tilt angle of the inner box (21) and the centering assembly (35) and buffer spring (36) for elastically supporting the inner box (21) are fixedly installed inside the outer box (1). Oxygen supply module (4), the oxygen supply module (4) includes telescopic airbags (41) fixedly installed in the four corner areas of the bottom of the inner box (21), an air supply pipe (42) connected to the bottom of the fish tank (22) is installed, and an air collection component (43) for conveying gas is installed between the telescopic airbag (41) and the air supply pipe (42). The suction module (5) includes a bent pipe (51) fixedly installed inside the fish tank (22) for suctioning the lower layer of feces. The top end of the air supply pipe (42) extends into the inside of the bent pipe (51), and a water filter assembly (53) is installed on the top of the bent pipe (51). The lifting assembly (34) includes two servo cylinders (341) arranged in a V-shape. The bottom end of the servo cylinder (341) is hinged with a connecting seat (342). The connecting seat (342) is fixedly installed on the inner bottom wall of the outer housing (1). The top end of the telescopic section of the servo cylinder (341) is hinged with a universal joint (343). The top of the universal joint (343) is fixedly connected to the bottom of the inner housing (21). When the outer housing (1) tilts to one side, the servo cylinder (341) drives the inner housing (21) to tilt to the opposite side, changing the distance between the inner housing and the outer housing, so that the telescopic airbag (41) can extend and retract to supply air.

2. The live fish preservation and transportation device with a gradient compartment anti-mutual-damage structure according to claim 1, characterized in that: The fish tank (22) is fixedly installed with a perforated bottom plate (24), which divides the bottom of the fish tank (22) into a manure-separating chamber (25). A wedge plate (251) is fixedly installed inside the manure-separating chamber (25), and the height of the wedge plate (251) gradually decreases from back to front.

3. The live fish preservation and transportation device with a gradient compartment anti-mutual-damage structure according to claim 2, characterized in that: The fish tank (22) has several slots (221) evenly distributed in front and back on the left and right inner walls. The slots (221) are located above the perforated bottom plate (24). The fish tank (22) has several perforated partitions (23) evenly distributed in front and back installed inside. The perforated partitions (23) are inserted into the corresponding slots (221). The perforated partitions (23) are fitted with rubber buffer layers (231) on both the front and back sides.

4. The live fish preservation and transportation device with a gradient compartment anti-mutual-damage structure according to claim 1, characterized in that: The accelerometer (31), gyroscope (32) and servo cylinder (341) are all electrically connected to the controller (33). The accelerometer (31) and gyroscope (32) detect the acceleration and angular velocity of the inner box (21) during movement and convert the acceleration and angular velocity into electrical signals and transmit them to the controller (33). The controller (33) processes the electrical signals from the accelerometer (31) and gyroscope (32) and controls the servo cylinder (341) to adjust the corresponding area of ​​the inner box (21) by lifting.

5. The live fish preservation and transportation device with a gradient compartment anti-mutual-damage structure according to claim 1, characterized in that: The centering component (35) includes an elastic telescopic rod (351) fixedly installed on the inner bottom wall of the outer casing (1). The top end of the telescopic section of the elastic telescopic rod (351) is connected to the bottom of the inner casing (21) through a fixed ball joint (352).

6. The live fish preservation and transportation device with a gradient compartment anti-mutual-damage structure according to claim 1, characterized in that: The gas collection assembly (43) includes a three-way pipe (431) fixedly connected to the bottom of the telescopic airbag (41) and in communication. The bottom of the three-way pipe (431) is fixedly connected to the inner bottom wall of the outer casing (1). One-way valve one (432) and one-way valve two (433) are respectively installed at the left and right ends of the three-way pipe (431). One-way valve one (432) is an air inlet valve and one-way valve two (433) is an air outlet valve. One end of one-way valve two (433) away from the three-way pipe (431) is fixedly connected to an air supply pipe (434). Several air supply pipes (434) are connected to a gas collection pipe (435) at the ends away from the corresponding one-way valve two (433). The bottom end of the air supply pipe (42) is fixedly connected to and in communication with the gas collection pipe (435).

7. The live fish preservation and transportation device with a gradient compartment anti-mutual-damage structure according to claim 6, characterized in that: The bottom end of the vertical section of the bend (51) extends into the interior of the manure chamber (25) and is fixedly connected to a suction nozzle (52). The suction nozzle (52) is located in front of the wedge plate (251). The top end of the air supply pipe (42) extends into the interior of the vertical section of the bend (51) and is fixedly installed with an air stone (421). The water filter assembly (53) is installed on the bend section at the top of the bend (51).

8. The live fish preservation and transportation device with a gradient compartment anti-mutual-damage structure according to claim 7, characterized in that: The water filtration assembly (53) includes a housing (531) threaded onto the port of the bent section of the bend pipe (51), and a plurality of drain holes (532) are provided at the bottom of the housing (531), and filter cotton (533) is detachably installed inside the drain holes (532).

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