Water-cooled marine constant temperature machine

Abstract

The present application relates to the technical field of seafood storage, and discloses a water-cooled seafood constant-temperature machine, which comprises a fish pool and a plurality of compressor cooling systems arranged in the fish pool, wherein the compressor cooling systems are arranged at the bottom of the fish pool, each compressor cooling system comprises two compressor bodies, each compressor body is in the shape of a cylinder, a stamping piston and an air pressure piston are arranged in each compressor body to reciprocally slide, the stamping piston and the air pressure piston are connected through a connecting rod, the air pressure piston divides the compressor body into a compression chamber and an evaporation chamber, and a propelling mechanism for driving the stamping piston to reciprocally slide is further arranged on the fish pool. The water in the fish pool is extracted from the bottom, and the water supplement is from the vicinity of the sidewall and the top of the fish pool, so as to form a water circulation, and the water flow is also accelerated, so that the cold water is quickly diffused into the whole fish pool, and the problem of uneven water temperature distribution in the fish pool is avoided.

Description

Technical Field

[0001] This invention relates to the field of seafood storage technology, and in particular to a water-cooled seafood temperature control system. Background Technology

[0002] Seafood temperature control systems can be used in various seafood tanks to maintain a constant water temperature. Providing seafood with a suitable water temperature environment is crucial, especially in summer when the water temperature in restaurant and hotel tanks rises, affecting the seafood. Therefore, seafood temperature control systems are needed to regulate the water temperature in the tanks. However, compared to existing seafood temperature control systems, they typically have the following problems:

[0003] First, the cooling process in the fishpond involves directly cooling the water, which results in some areas of the pond being at a low temperature while others are at room temperature. This creates a temperature difference in the water during the cooling process, requiring a slow mixing time, which can negatively impact the fish in the pond.

[0004] Secondly, the temperature rise in a typical fishpond usually occurs when an external high-temperature source comes into contact with the surface water or the water in close proximity to the aquarium. This temperature rise is then transferred to the deeper water within the aquarium through heat conduction, leading to an overall increase in the temperature of the water in the fishpond.

[0005] To address this, we designed a water-cooled seafood temperature control system. Summary of the Invention

[0006] The purpose of this invention is to solve the problem that when the water temperature rises, it is caused by an external high-temperature source coming into contact with the surface water or the water in close contact with the aquarium area, and then this part of the water temperature rises through heat conduction to the water deep in the aquarium, thus causing the overall water temperature in the aquarium to rise. Therefore, a water-cooled seafood constant temperature machine is proposed.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A water-cooled seafood constant temperature machine includes a fish tank and multiple compressor cooling systems installed in the fish tank. The compressor cooling systems are located at the bottom of the fish tank and include two compressor bodies. The compressor bodies are cylindrical, and a ram piston and a pneumatic piston reciprocate within the compressor body. The ram piston and the pneumatic piston are connected by a connecting rod. The pneumatic piston divides the compressor body into a compression chamber and an evaporation chamber. The fish tank is also equipped with a propulsion mechanism that drives the ram piston to reciprocate. Multiple cold water discharge racks for discharging cooling water are provided on the side wall and top of the fish tank. The reciprocating ram piston draws water from the fish tank into the compressor body and then delivers it to the cold water discharge racks.

[0009] Preferably, the propulsion mechanism includes:

[0010] The drive shaft is perpendicular to the compressor body and located between the two compressor bodies. Each compressor body has a sealing plate fixed at its opposite end. The compressor body is also provided with a pull rod that passes through the sealing plate and is connected to the stamping piston.

[0011] The side frame consists of two side frames, which are fixed to the outer wall of the drive shaft. The drive shaft between the two side frames has a notch, and a fixed shaft is connected to the end away from the drive shaft. The pull rods on both sides of the drive shaft are rotatably connected to the fixed shaft through connecting brackets.

[0012] Preferably, a spiral tube is inserted into the stamping piston. The spiral tube is U-shaped and placed in the evaporation chamber, and its outer wall is bent and wavy. Both ends of the spiral tube pass through the stamping piston.

[0013] Preferably, an inlet pipe and an outlet pipe are provided through the side wall of the compressor body, and a second one-way piston and a first one-way piston are respectively provided on the inlet pipe and the outlet pipe. The water flow direction of the second one-way piston is to flow into the compressor body, and the water flow direction of the first one-way piston is to flow out of the compressor body.

[0014] The water inlet pipe extends into the fish pond, and a filter screen for filtering out debris is installed on the top of the water inlet pipe.

[0015] Preferably, the first one-way piston is connected to one end of the spiral tube through the second rubber hose, and the water outlet pipe passes water into the cold water discharge rack.

[0016] Preferably, the cold water discharge rack has an inner cavity, and the inner wall of the fish pond has multiple built-in pipes. The water outlet pipe is connected to the built-in pipes, and the built-in pipes are connected to the inner cavity of the cold water discharge rack on the side wall of the fish pond through a second connecting pipe.

[0017] Preferably, the cold water drain rack at the top of the fish pond is rotatably connected to the top of the inner wall of the fish pond via a rotating hinge, the cold water drain rack on the side wall of the fish pond is fixed to the inner wall of the fish pond by suction cups, and the built-in pipe is connected to the inner cavity of the cold water drain rack at the top of the fish pond via a first rubber hose and a first connecting pipe.

[0018] Preferably, the cold water discharge rack has symmetrically inclined sides on both sides, with the inclined side of the cold water discharge rack at the top of the fish pond facing upwards, and the inclined side of the cold water discharge rack on the side wall of the fish pond facing the inner wall of the fish pond.

[0019] Preferably, the inner cavity of the cold water discharge rack has an impact plate that slides, and the impact plate is repositioned within the inner cavity by a return spring.

[0020] Preferably, a rotating hole is provided on the inclined side, and a rotating cylinder rotates inside the rotating hole. A water spray hole is opened on the rotating cylinder, and a pull rope is connected between the rotating cylinder and the impact plate.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. This invention involves extracting water from the bottom of the fishpond and replenishing the water by introducing water from near the side wall and top of the fishpond, thus forming a water circulation. This also accelerates the water flow and allows the replenished cold water to quickly spread throughout the fishpond, avoiding the problem of uneven water temperature distribution.

[0023] 2. This invention employs multiple cold water discharge racks on both the sidewalls and top of the fishpond to discharge cooling water. Once cooled, the water is discharged from these racks. This method effectively prevents external high-temperature sources from contacting the surface water or the water in close proximity to the fishpond area, thus avoiding the heat transfer from the water to the deeper parts of the fishpond and preventing an overall increase in water temperature. This method of discharging cold water effectively cools the initial heating area of ​​the water, providing effective heat insulation and cooling for the fishpond water. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a water-cooled seafood constant temperature machine proposed in this invention;

[0025] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0026] Figure 3 This is a schematic diagram of the internal structure of the compressor body in a water-cooled seafood constant temperature machine proposed in this invention;

[0027] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0028] Figure 5 This is a schematic diagram of the combined structure of the cold water discharge rack in a water-cooled seafood constant temperature machine proposed in this invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the cold water discharge rack in a water-cooled seafood constant temperature machine proposed in this invention;

[0030] Figure 7 This is a side view of the cold water discharge rack in a water-cooled seafood constant temperature machine proposed in this invention.

[0031] In the diagram: 1. Fish pond; 2. Cold water discharge frame; 3. First rubber hose; 4. First through pipe; 5. Rotating hinge; 6. Rotating cylinder; 7. Spray hole; 8. Inner cavity; 9. Second through pipe; 10. Impact plate; 11. Pull rope; 12. Return spring; 13. Inclined side; 14. Compressor body; 15. Drive shaft; 16. Stamping piston; 17. Spiral tube; 18. Inlet pipe; 19. Outlet pipe; 20. Second rubber hose; 21. Pull rod; 22. Filter screen; 23. First one-way piston; 24. Second one-way piston; 25. Sealing plate; 26. Side frame; 27. Connecting frame. Detailed Implementation

[0032] Reference Figures 1-7 A water-cooled seafood constant temperature machine includes a fish tank 1 and multiple compressor cooling systems installed within the fish tank 1. The compressor cooling systems are located at the bottom of the fish tank 1. It should be noted that the refrigeration working principle of the compressor cooling system is based on a vapor compression refrigeration cycle, which mainly achieves heat transfer through four processes: compression, condensation, expansion, and evaporation. First, the low-temperature, low-pressure gaseous refrigerant is compressed into a high-temperature, high-pressure gas; the high-temperature, high-pressure gas releases heat and condenses into a liquid; then, the refrigerant pressure and temperature are reduced to prepare for evaporation and heat absorption; finally, the refrigerant absorbs heat from the water in the fish tank 1, thereby cooling the water in the fish tank 1. The low-temperature, low-pressure gas in the evaporator is then drawn back into the compressor, and the cycle repeats. It should be noted that in this solution, the gas in the compression chamber is pressurized, and then the refrigerant flows into the evaporation chamber to absorb heat. After heat absorption, it flows back into the compression chamber, and so on. The compressor cooling system is existing technology and will not be elaborated on further here.

[0033] The compressor cooling system includes two compressor bodies 14, each cylindrical in shape. A ram piston 16 and a pneumatic piston reciprocate within each compressor body 14, connected by a connecting rod. The pneumatic piston divides the compressor body 14 into a compression chamber and an evaporation chamber. The pneumatic piston compresses the gaseous refrigerant into a liquid state, which then flows into the evaporation chamber. Since the pressure in the evaporation chamber is lower than in the compression chamber, the liquid refrigerant evaporates and absorbs heat, cooling the water flowing into the evaporation chamber. This cooled water is then returned to the compression chamber, completing a cycle. The compression of the gaseous refrigerant into a liquid state, and the methods for controlling the flow of refrigerant from the compression and evaporation chambers, are existing technologies and will not be elaborated upon here.

[0034] The fishpond 1 is also equipped with a propulsion mechanism that drives the stamping piston 16 to slide back and forth. This propulsion mechanism provides the driving force for the stamping piston 16 and the pneumatic piston. The propulsion mechanism includes a drive shaft 15 and is located between the two compressor bodies 14. The fishpond 1 is also equipped with a drive motor that drives the drive shaft 15 to rotate. The output end of the drive motor is fixedly connected to the drive shaft 15. The drive shaft 15 and the compressor body 14 are arranged perpendicular to each other, so that the stamping piston 16 and the pneumatic piston can run stably within the compressor body 14.

[0035] Each end of the compressor body 14 is fixed with a sealing plate 25. The compressor body 14 is also provided with a pull rod 21 that passes through the sealing plate 25 and is connected to the stamping piston 16. This arrangement can ensure that the pull rod 21 can extend and retract coaxially within the compressor body 14. Due to the presence of the sealing plate 25, a sealed space is formed inside the compressor body 14. The stamping piston 16 and the pneumatic piston are divided into three chambers within the compressor body 14, namely the compression chamber, the evaporation chamber, and the water intake chamber. These three chambers respectively play the roles of compressing the refrigerant into a liquid state, absorbing heat from the water by the vaporization of the refrigerant, and introducing and drawing water out.

[0036] Reference Figure 3 and Figure 4 In this state, the propulsion mechanism also includes side frames 26, with two side frames 26 fixed to the outer wall of the drive shaft 15. The drive shaft 15 between the two side frames 26 has a notch, and a fixed shaft is connected to the end away from the drive shaft 15. The pull rods 21 on both sides of the drive shaft 15 are rotatably connected to the fixed shaft through the connecting frame 27. Therefore, after the drive motor drives the drive shaft 15 to rotate, it can drive the pull rods 21 on both sides to reciprocate, and finally drive the stamping piston 16 and the pneumatic piston to reciprocate within the compressor body 14.

[0037] The side wall of the compressor body 14 is provided with an inlet pipe 18 and an outlet pipe 19. The inlet pipe 18 and the outlet pipe 19 are respectively provided with a second one-way piston 24 and a first one-way piston 23. The water flow direction of the second one-way piston 24 is to flow into the compressor body 14, and the water flow direction of the first one-way piston 23 is to flow out of the compressor body 14. This arrangement ensures that when the pulling rod 21 moves the stamping piston 16, a negative pressure is generated in the water inlet chamber between the stamping piston 16 and the sealing plate 25, so that the water in the fish pond 1 is drawn into the compressor body 14 through the second one-way piston 24 on the inlet pipe 18. Then, as the stamping piston 16 moves in the opposite direction, the water in the water inlet chamber is squeezed out from the first one-way piston 23 on the outlet pipe 19. Due to one reciprocating motion of the stamping piston 16, one operation of pumping water and draining water from the water inlet chamber is performed.

[0038] The inlet pipe 18 extends into the fish pond 1, and a filter screen 22 for filtering debris is installed on the top of the inlet pipe 18. This can block impurities in the water and draw water from the bottom of the fish pond 1. The water in the fish pond 1 is replenished by water entering from near the side wall and the top of the fish pond 1, thus forming a water circulation. This also accelerates the water flow and allows the replenished cold water to quickly spread throughout the fish pond 1, avoiding the problem of uneven water temperature distribution in the fish pond 1.

[0039] A spiral tube 17 is inserted into the stamping piston 16. Both ends of the spiral tube 17 pass through the stamping piston 16. The openings at both ends of the spiral tube 17 are located in the water inlet chamber. The first one-way piston 23 is connected to one end of the spiral tube 17 through the second rubber hose 20. The water outlet pipe 19 introduces water into the cold water discharge rack 2. Therefore, when the stamping piston 16 moves, the water inlet chamber is in a negative pressure state, so the water inlet chamber is in a water replenishment state. At this time, the compression chamber is in the step of compressing the refrigerant.

[0040] When the ram piston 16 begins to move in the reverse direction, the compressed refrigerant in the compression chamber is transferred to the evaporation chamber. At this time, the water inlet chamber is under compression, so the water originally located in the water inlet chamber enters the spiral tube 17 and then flows out of the outlet pipe 19 through the second rubber hose 20. Therefore, the water passing through the spiral tube 17 will have its heat absorbed by the vaporized refrigerant, thereby cooling the water. Then it will be discharged from the outlet pipe 19, thus completing the cooling effect on the water absorbed into the compressor body 14.

[0041] Meanwhile, the spiral tube 17 is U-shaped and placed in the evaporation chamber, and its outer wall is bent and wavy, so that the surface of the spiral tube 17 can contact the evaporation chamber as much as possible, so that the cooling water effect is better. The reciprocating sliding piston 16 draws the water from the fish pond 1 into the compressor body 14 and then delivers it to the cold water discharge rack 2. At the same time, the water in the spiral tube 17 is always in a flowing state during the cooling process, so the cooled water can be continuously discharged.

[0042] Multiple cold water discharge racks 2 are provided on the side walls and top of the fish pond 1 to discharge cooling water. After cooling, the water will be discharged from the cold water discharge racks 2 on the side walls and top of the fish pond 1. It should be noted that this cold water discharge method can effectively prevent external high temperature sources from contacting the surface water source or the water in close contact with the area of ​​the fish pond 1, and prevent the water temperature from rising and being transferred to the deep water of the fish pond 1 through heat conduction, thereby causing the overall temperature of the water in the fish pond 1 to rise. This method of discharging cold water can effectively cool down the initial heated area of ​​the water, and can effectively insulate and cool down the water in the fish pond 1.

[0043] Reference Figures 5-7In this configuration, the cold water discharge rack 2 has an inner cavity 8, and the inner wall of the fish pond 1 has multiple built-in pipes. The water outlet pipe 19 is connected to the built-in pipes, and the built-in pipes are connected to the inner cavity 8 of the cold water discharge rack 2 on the side wall of the fish pond 1 through the second connecting pipe 9. The cold water discharge rack 2 on the side wall of the fish pond 1 is fixed to the inner wall of the fish pond 1 by suction cups. The built-in pipes are connected to the inner cavity 8 of the cold water discharge rack 2 at the top of the fish pond 1 through the first rubber hose 3 and the first connecting pipe 4. Therefore, part of the cold water discharged from the water outlet pipe 19 flows through the built-in pipes to the cold water discharge rack 2 on the side wall of the fish pond 1 through the second connecting pipe 9, and the other part flows through the first connecting pipe 4 to the cold water discharge rack 2 at the top of the fish pond 1.

[0044] The cold water discharge rack 2 at the top of the fish pond 1 is rotatably connected to the top of the inner wall of the fish pond 1 via a rotating hinge 5. This facilitates the easy handling of fish in the fish pond 1. Simply rotate the cold water discharge rack 2 at the top of the fish pond 1 to remove the fish. At the same time, due to the setting of the cold water discharge rack 2 at the top of the fish pond 1, the cold water discharged from the cold water discharge rack 2 at the top of the fish pond 1 will form a parabolic shape. This can increase the contact area between the water and the air, increase the oxygen content in the overall fish pond 1, and also play a role in cooling and heat insulation of the water at the top of the fish pond 1.

[0045] Reference Figure 6 In this configuration, the cold water discharge rack 2 has symmetrically arranged inclined sides 13 on both sides, which facilitates the discharge of cooled water from the side walls of the inclined sides 13. The inclined sides 13 of the cold water discharge rack 2 located at the top of the fish pond 1 are inclined upwards, which improves the overall oxygen content in the fish pond 1 and also cools and insulates the water at the top of the fish pond 1. The inclined sides 13 of the cold water discharge rack 2 located on the side wall of the fish pond 1 face the inner wall of the fish pond 1, which allows cold water to be directly sprayed into contact with the side wall of the fish pond 1 and cool the side wall of the fish pond 1. At the same time, it also cools and insulates the water near the side wall of the fish pond 1.

[0046] An impact plate 10 slides in the inner cavity 8 of the cold water discharge rack 2, and the impact plate 10 is retracted and reset in the inner cavity 8 by a return spring 12. It should be noted that the cold water flow entering the inner cavity 8 of the cold water discharge rack 2 will impact the impact plate 10. Since the cooling water is not always present, but is injected into the inner cavity 8 intermittently, the cooling water will intermittently impact the impact plate 10, thereby causing the impact plate 10 to slide in the inner cavity 8 under the action of the return spring 12.

[0047] A rotating hole is provided on the inclined side 13, and a rotating cylinder 6 rotates inside the rotating hole. A reset spring is provided inside the rotating hole to drive the rotating cylinder 6 to reset. A water spray hole 7 is provided on the rotating cylinder 6. A pull rope 11 is connected between the rotating cylinder 6 and the impact plate 10. Therefore, each reciprocating motion of the impact plate 10 can drive the rotating cylinder 6 to rotate in the rotating hole through the pull rope 11. Under the action of the reset spring, the rotating cylinder 6 is pulled to swing back and forth, and cooling water will be sprayed out from the water spray hole 7 on the swinging rotating cylinder 6, thereby forming a swinging water spray column, which can expand the cooling range and accelerate the mixing of the cold water and the original water in the fish pond 1.

[0048] Therefore, by installing cold water discharge racks 2 on the side walls and top of the fish pond 1, the cold water discharged from the cold water discharge racks 2 can effectively prevent the transfer of heat, so that the cold water in the fish pond 1 is limited to the top and side walls of the fish pond 1 and will not flow out of the fish pond 1. This can provide the stability of the water in the middle of the entire fish pond, and at the same time, it keeps the entire edge of the fish pond 1 within the range of cold water replenishment, effectively blocking the contact of external high temperature sources with the surface water source, or the water in close contact with the area of ​​the fish pond 1, and preventing the water temperature from rising and being transferred to the deep water of the fish pond 1 through heat conduction.

[0049] The working principle of this invention is as follows:

[0050] First, the compressor cooling system and drive motor are turned on. The drive motor drives the ram piston 16 and the pneumatic piston to reciprocate within the compressor body 14. The compressor cooling system compresses the gaseous refrigerant and allows the refrigerant to flow in and out of the two chambers: the compression chamber and the evaporation chamber. The ram piston 16 and the pneumatic piston are divided into three chambers within the compressor body 14: the compression chamber, the evaporation chamber, and the water inlet chamber. These three chambers respectively serve to compress the refrigerant into a liquid state, allow the refrigerant to vaporize and absorb heat from the water, and introduce and draw water in and out of the water.

[0051] Then, one reciprocating motion of the ram piston 16 will pump water and drain water from the water inlet chamber once. The water pipe 19 will pass water into the cold water discharge rack 2. Therefore, when the ram piston 16 moves, the water inlet chamber will be in a negative pressure state, so the water inlet chamber will be in a water replenishment state. At this time, the compression chamber is in the step of compressing the refrigerant.

[0052] When the ram piston 16 begins to move in the reverse direction, the compressed refrigerant in the compression chamber is transferred to the evaporation chamber. At this time, the water inlet chamber is under compression, so the water originally located in the water inlet chamber enters the spiral tube 17 and then flows out of the outlet pipe 19 through the second rubber hose 20. Therefore, the water passing through the spiral tube 17 will have its heat absorbed by the vaporized refrigerant, thereby cooling the water. Then it will be discharged from the outlet pipe 19, thus completing the cooling effect on the water absorbed into the compressor body 14.

[0053] Since the fish pond 1 is equipped with multiple cold water discharge racks 2 on its side walls and top, the cooled water will be discharged from the cold water discharge racks 2 on the side walls and top of the fish pond 1. This cold water discharge method can effectively prevent external high temperature sources from contacting the surface water source or the water in close contact with the area of ​​the fish pond 1, and prevent the water temperature from rising and being transferred to the deep water of the fish pond 1 through heat conduction, thereby causing the overall temperature of the water in the fish pond 1 to rise. This method of discharging cold water can effectively cool down the initial heated area of ​​the water, and can effectively insulate and cool down the water in the fish pond 1.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A water-cooled seafood constant temperature machine, comprising a fish tank and multiple compressor cooling systems disposed within the fish tank, wherein the compressor cooling systems are disposed at the bottom of the fish tank, characterized in that, The compressor cooling system includes two compressor bodies, each cylindrical in shape. A ram piston and a pneumatic piston reciprocate within the compressor body, connected by a connecting rod. These pistons divide the compressor body into a compression chamber, an evaporation chamber, and a water intake chamber. A propulsion mechanism drives the ram piston to reciprocate. Multiple cold water discharge racks are located on the side walls and top of the fishpond. The reciprocating ram piston draws water from the fishpond into the compressor body and then delivers it to the cold water discharge racks. A U-shaped spiral tube is inserted into the ram piston and placed in the evaporation chamber, with a wavy outer wall. Both ends of the spiral tube penetrate the ram piston. An inlet pipe and an outlet pipe are installed through the side walls of the compressor body. A second one-way piston and a first one-way piston are respectively installed on the inlet and outlet pipes. The water flow direction of the second one-way piston is inflow into the compressor body, while the water flow direction of the first one-way piston is outflow from the compressor body. The inlet pipe extends into the fish pond, and a filter screen for filtering debris is installed on the top of the inlet pipe. The openings at both ends of the spiral tube are located in the water inlet chamber. When the water inlet chamber is under pressure, the water in the water inlet chamber enters the spiral tube. The first one-way piston is connected to one end of the spiral tube through the second rubber hose. The outlet pipe sends water into the cold water discharge rack. The cold water discharge rack has symmetrically inclined sides on both sides. The inclined side of the cold water discharge rack on the top of the fish pond faces upwards, and the inclined side of the cold water discharge rack on the side wall of the fish pond faces the inner wall of the fish pond. An impact plate slides in the inner cavity of the cold water discharge rack, and the impact plate is retracted and reset in the inner cavity by a return spring. A rotating hole is provided on the inclined side, and a rotating cylinder rotates in the rotating hole. A water spray hole is provided on the rotating cylinder, and a pull rope is connected between the rotating cylinder and the impact plate.

2. The water-cooled seafood constant temperature machine according to claim 1, characterized in that, The promoting organizations include: The drive shaft is perpendicular to the compressor body and located between the two compressor bodies. Each compressor body has a sealing plate fixed at its opposite end. The compressor body is also provided with a pull rod that passes through the sealing plate and is connected to the stamping piston. The side frame consists of two side frames, which are fixed to the outer wall of the drive shaft. The drive shaft between the two side frames has a notch, and a fixed shaft is connected to the end away from the drive shaft. The pull rods on both sides of the drive shaft are rotatably connected to the fixed shaft through connecting brackets.

3. The water-cooled seafood constant temperature machine according to claim 1, characterized in that, The cold water discharge rack has an inner cavity, and the inner wall of the fish pond has multiple built-in pipes. The water outlet pipe is connected to the built-in pipes, and the built-in pipes are connected to the inner cavity of the cold water discharge rack on the side wall of the fish pond through a second connecting pipe.

4. A water-cooled seafood constant temperature machine according to claim 3, characterized in that, The cold water drain rack at the top of the fish pond is rotatably connected to the top of the inner wall of the fish pond via a rotating hinge. The cold water drain rack on the side wall of the fish pond is fixed to the inner wall of the fish pond by suction cups. The built-in pipe is connected to the inner cavity of the cold water drain rack at the top of the fish pond via a first rubber hose and a first connecting pipe.

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