A sewage discharge system and an aquaculture ship including the same

Abstract

The present invention discloses a sewage discharge system and a breeding ship including the same. Among them, the sewage discharge system includes: a support cabin, a breeding tank, a bottom cabin, and a sewage cabin. The breeding tank is arranged in the support cabin, and the breeding tank can float up and down with the change of the water level in the support cabin. A sewage discharge port is arranged at the bottom of the breeding tank, and a sewage discharge valve for controlling the opening and closing of the sewage discharge port is arranged at the sewage discharge port; the bottom cabin is communicated with the support cabin, and the sewage discharge port faces the bottom cabin; a first communication hole communicated with the bottom cabin is opened on the side wall of the sewage cabin. The sewage discharge system further includes a switching device for controlling the opening and closing of the first communication hole. The sewage discharge system of the present invention can realize the real-time discharge of sewage in the breeding tank, and the operator can conveniently and timely discharge the sewage in the breeding tank according to the water quality of the breeding tank, so as to adapt to the long-term discharge of fish domestic sewage and keep the water quality in the breeding tank within a suitable range.

Description

Technical Field

[0001] The present invention relates to the field of aquaculture, and particularly relates to a sewage discharge system and an aquaculture ship including the same. Background Art

[0002] Existing regulations have increasingly high requirements for the discharge of ship pollutants. Since the aquaculture cycle of aquaculture ships is generally long, especially for some high-value fish, their aquaculture cycle may be even longer. And because fish live in a closed space, the output of domestic sewage of fish will increase greatly. Therefore, the sewage discharge system of aquaculture ships is very important.

[0003] In existing aquaculture ships, the cabin sewage discharge system mainly sets up an independent sewage tank or black water tank, and then cleans the sewage tank after the ship docks. Therefore, the existing sewage discharge system is difficult to adapt to the long-term discharge of domestic sewage of fish. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect that the sewage discharge system in the prior art is difficult to adapt to the long-term discharge of domestic sewage of fish, and to provide a sewage discharge system and an aquaculture ship including the same.

[0005] The present invention solves the above technical problem by the following technical solutions:

[0006] A sewage discharge system, characterized in that the sewage discharge system includes:

[0007] A support tank;

[0008] An aquaculture tank, the aquaculture tank is arranged in the support tank, the aquaculture tank can float up and down with the change of the water level of the support tank, a sewage discharge port is arranged at the bottom of the aquaculture tank, and a sewage discharge valve for controlling the opening and closing of the sewage discharge port is arranged at the sewage discharge port;

[0009] A bottom tank, the bottom tank is communicated with the support tank, and the sewage discharge port faces the bottom tank;

[0010] A sewage tank, a first communication hole communicated with the bottom tank is opened on the side wall of the sewage tank;

[0011] A switch device for controlling the opening and closing of the first communication hole, the switch device is linked with the aquaculture tank. When the aquaculture tank moves upward to a first position, the switch device closes the first communication hole. When the aquaculture tank moves downward to a second position, the switch device opens the first communication hole.

[0012] In this solution, when it is necessary to drain the sewage in the cultivation tank, the water in the support tank is drained, causing the liquid level in the support tank to drop. The cultivation tank moves downward to the second position, triggering the switch device to open the first communication hole. At this time, the sewage discharge valve can be opened, allowing the sewage in the cultivation tank to be discharged from the sewage outlet into the bottom cabin and enter the sewage tank through the first communication hole, thus completing the sewage discharge of the cultivation tank. When it is necessary to inject fresh seawater into the cultivation tank, seawater can be injected into the support tank, causing the cultivation tank to float and move to the first position, triggering the switch device to close the first communication hole, so that the newly injected seawater will not be discharged outward. The sewage discharge system of this solution can realize the real-time discharge of sewage in the cultivation tank. The operator can conveniently and timely discharge the sewage in the cultivation tank according to the water quality of the cultivation tank, so as to adapt to the long-term discharge of fish sewage and keep the water quality in the cultivation tank within an appropriate range.

[0013] Preferably, the switch device includes a diversion plate, which is movably arranged in the bottom cabin and is linked with the cultivation tank. Among them, when the cultivation tank moves to the first position, the diversion plate is higher than the first communication hole, and the support tank is not communicated with the first communication hole; when the cultivation tank moves to the second position, the diversion plate is lower than the first communication hole, and the support tank is communicated with the first communication hole.

[0014] In this solution, the diversion plate floats up and down with the cultivation tank to realize the opening and closing control of the first communication hole. The structure is simple and reliable. The diversion plate is directly washed by the sewage outlet in the bottom cabin and is not easy to retain dirt, which is beneficial to the cleanliness of the cultivation environment.

[0015] Preferably, the diversion plate arches towards the cultivation tank.

[0016] In this solution, since the diversion plate arches towards the cultivation tank, it is beneficial to the flow of sewage and it is not easy to have flow dead ends. Therefore, dirt is not easy to remain on the diversion plate, ensuring the cleanliness of the water quality in the bottom cabin and thus being beneficial to protecting the cultivation environment.

[0017] Preferably, a sewage tank is detachably arranged at the bottom of the sewage tank.

[0018] In this solution, the solid dirt entering the sewage tank can fall into the sewage tank. Since the sewage tank can be detached, the sewage tank can be removed to thoroughly clean these solid dirt, thus ensuring the cleanliness of the sewage tank.

[0019] Preferably, a connecting rod is arranged between the sewage tank and the cultivation tank so that the sewage tank is linked with the cultivation tank, and the sewage tank is detachably connected to the connecting rod.

[0020] In this solution, the movement of the breeding tank is transmitted to the sewage tank through the connecting rod, thereby driving the sewage tank to move. The sewage tank can be connected to the deflector plate, thereby further driving the deflector plate to move. The connecting rod and the sewage tank can be threadedly connected.

[0021] Preferably, the connecting rod has a first connecting section connected to the breeding tank and a second connecting section connected to the sewage tank. The extending direction of the first connecting section is perpendicular to the normal plane of the breeding tank at the connection of the first connecting section, and the second connecting section extends in the vertical direction.

[0022] In this solution, the extending direction of the first connecting section is perpendicular to the normal plane of the breeding tank at the connection of the first connecting section, optimizing the stress distribution of the breeding tank and preventing the connecting rod from damaging the breeding tank when supporting it. In some embodiments, to improve the compressive capacity of the breeding tank, the bottom of the breeding tank is configured in a hemispherical or nearly hemispherical shape. Correspondingly, the first connecting section points to the center of the hemisphere. The second connecting section extends in the vertical direction to facilitate driving the sewage tank to move up and down.

[0023] Preferably, the side wall of the sewage tank is slidably engaged with the inner wall of the sewage chamber. When the upper end of the side wall is lower than the first communication hole, the sewage chamber is in communication with the first communication hole.

[0024] In this solution, the sewage tank can also play a role in controlling the opening and closing of the first communication hole, that is, the sewage tank can also form a part of the switching device.

[0025] Preferably, the breeding tank has a diversion pipe extending into the bottom cabin, and the sewage discharge port is arranged at the end of the diversion pipe.

[0026] In this solution, the sewage in the breeding tank directly flows into the bottom cabin through the diversion pipe, as much as possible avoiding the sewage entering the support cabin, resulting in incomplete sewage discharge and thus affecting the water quality in the breeding tank.

[0027] Preferably, a partition is arranged between the bottom cabin and the support cabin. The partition has a communication port, and the diversion pipe passes through the communication port and enters the bottom cabin.

[0028] In this solution, the partition plays a certain blocking role between the bottom cabin and the support cabin, making the sewage entering the bottom cabin not flow into the support cabin as much as possible, preventing the support cabin from being polluted.

[0029] Preferably, the sewage discharge system further includes a siphon pipe, which connects the support cabin to the sea so that the water in the support cabin can be discharged into the sea through siphon action.

[0030] In this solution, the siphon effect of the pipeline is utilized to control the position of the breeding tank, thereby controlling the opening and closing of the first communication hole, avoiding the use of a pump to draw water, saving energy consumption and avoiding the vibration of the pump when drawing water, and improving the growth environment of the fish.

[0031] Preferably, the sewage discharge system further includes a drainage tank, which is communicated with the sewage tank through a second communication hole, and a filter screen is provided on the second communication hole.

[0032] In this solution, under the action of the filter screen, the solid dirt entering the sewage tank is blocked in the sewage tank and collected in the sewage tank, and the filtered sewage enters the drainage tank through the second communication hole, thereby preventing or reducing the amount of solid dirt directly discharged into the sea and improving the environmental friendliness of the sewage discharge system.

[0033] A breeding ship, characterized in that the breeding ship includes the sewage discharge system as described above.

[0034] In this solution, the breeding ship can utilize the above sewage discharge system to realize the real-time discharge and cleaning of sewage, effectively improve the water quality of the breeding tank, and thus adapt to the long-term discharge of fish domestic sewage, which is beneficial to the breeding of fish.

[0035] The positive and progressive effects of the present invention are as follows:

[0036] The sewage discharge system of the present invention can realize the real-time discharge of sewage in the breeding tank. The operator can conveniently and timely discharge the sewage in the breeding tank according to the water quality of the breeding tank, so as to adapt to the long-term discharge of fish domestic sewage and keep the water quality in the breeding tank within an appropriate range. The breeding ship of the present invention can utilize the above sewage discharge system to realize the real-time discharge and cleaning of sewage, effectively improve the water quality of the breeding tank, and thus adapt to the long-term discharge of fish domestic sewage, which is beneficial to the breeding of fish. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic structural diagram of the sewage discharge system according to an embodiment of the present invention;

[0038] Figure 2 It is a schematic structural diagram of the connecting rod and the sewage tank of the sewage discharge system according to an embodiment of the present invention;

[0039] Figure 3 It is a schematic structural diagram of the sewage tank of the sewage discharge system according to an embodiment of the present invention;

[0040] Figure 4 It is a schematic structural diagram of the first communication hole of the sewage discharge system according to an embodiment of the present invention;

[0041] Figure 5Structural schematic diagram of the second communication hole of the sewage discharge system according to an embodiment of the present invention.

[0042] Explanation of reference numerals

[0043] Support cabin 1

[0044] Cultivation tank 2

[0045] Sewage outlet 21

[0046] Diversion pipe 22

[0047] Bottom cabin 3

[0048] Partition board 31

[0049] Diversion plate 32

[0050] Sewage cabin 4

[0051] Sewage tank 41

[0052] Connecting rod 5

[0053] First connection section 51

[0054] Second connection section 52

[0055] First communication hole 6

[0056] Second communication hole 7

[0057] Drainage cabin 8

[0058] Drainage outlet 81

[0059] Siphon 9 Detailed implementation manners

[0060] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments accordingly.

[0061] As Figure 1 shown, this embodiment provides a sewage discharge system, which includes: a support cabin 1, a cultivation tank 2, a bottom cabin 3, and a sewage cabin 4. The cultivation tank 2 is arranged in the support cabin 1, and the cultivation tank 2 can float up and down with the change of the water level in the support cabin 1. A sewage outlet 21 is arranged at the bottom of the cultivation tank 2, and a sewage discharge valve (not shown in the figure) for controlling the opening and closing of the sewage outlet 21 is arranged at the sewage outlet 21; the bottom cabin 3 is communicated with the support cabin 1, and the sewage outlet 21 faces the bottom cabin 3; a first communication hole 6 (see Figure 1 , Figure 3 , Figure 4 shown) is formed in the side wall of the sewage cabin 4 and is communicated with the bottom cabin 3.

[0062] The sewage discharge system further includes a switching device for controlling the opening and closing of the first communication hole 6. The switching device is linked with the breeding tank 2. When the breeding tank 2 moves upward to the first position, the switching device closes the first communication hole 6. When the breeding tank 2 moves downward to the second position, the switching device opens the first communication hole 6.

[0063] When it is necessary to discharge the sewage in the breeding tank 2, the water in the support cabin 1 is discharged, so that the liquid level in the support cabin 1 drops, and the breeding tank 2 moves downward to the second position, triggering the switching device to open the first communication hole 6. At this time, the sewage discharge valve can be opened, so that the sewage in the breeding tank 2 is discharged from the sewage outlet 21 into the bottom cabin 3 and enters the sewage cabin 4 through the first communication hole 6, thereby completing the sewage discharge of the breeding tank 2. When it is necessary to inject fresh seawater into the breeding tank 2, seawater can be injected into the support cabin 1, so that the breeding tank 2 floats upward and moves to the first position, triggering the switching device to close the first communication hole 6, so that the newly injected seawater is no longer discharged outward, and at the same time, the new seawater can be stored in the breeding tank 2. The sewage discharge system of this solution can realize the real-time discharge of sewage in the breeding tank 2. The operator can conveniently and timely discharge the sewage in the breeding tank 2 according to the water quality of the breeding tank 2, so as to adapt to the long-term discharge of fish domestic sewage and keep the water quality in the breeding tank 2 within a suitable range.

[0064] Specifically, in this embodiment, the switching device includes a guide plate 32. The guide plate 32 is movably arranged in the bottom cabin 3 and is linked with the breeding tank 2. Among them, when the breeding tank 2 moves to the first position, the guide plate 32 is higher than the first communication hole 6, and the support cabin 1 is not communicated with the first communication hole 6. When the breeding tank 2 moves to the second position, the guide plate 32 is lower than the first communication hole 6, and the support cabin 1 is communicated with the first communication hole 6.

[0065] The guide plate 32 floats up and down with the breeding tank 2 to realize the opening and closing control of the first communication hole 6. The structure is simple and reliable. The guide plate 32 is directly washed by the sewage outlet 21 in the bottom cabin 3 and is not easy to leave dirt, which is beneficial to the cleanliness of the breeding environment.

[0066] The guide plate 32 arches towards the breeding tank 2. Since the guide plate 32 arches towards the breeding tank 2, it is beneficial to the flow of sewage and it is not easy to have flow dead corners. Therefore, dirt is not easy to remain on the guide plate 32, ensuring the cleanliness of the water quality in the bottom cabin 3, which is thus beneficial to protecting the breeding environment.

[0067] A sewage tank 41 is detachably arranged at the bottom of the sewage cabin 4. The solid dirt entering the sewage cabin 4 can fall into the sewage tank 41. Since the sewage tank 41 can be detached, the sewage tank 41 can be removed to thoroughly clean these solid dirt, thus ensuring the cleanliness of the sewage cabin 4.

[0068] See Figure 1 andFigure 2 As shown, a connecting rod 5 is provided between the sewage tank 41 and the aquaculture tank 2 so that the sewage tank 41 and the aquaculture tank 2 are linked, and the sewage tank 41 is detachably connected to the connecting rod 5. The movement of the aquaculture tank 2 is transmitted to the sewage tank 41 through the connecting rod 5, thereby driving the sewage tank 41 to move. The sewage tank 41 can be connected to the deflector 32, thereby further driving the deflector 32 to move. The connection between the connecting rod 5 and the sewage tank 41 can be a threaded connection.

[0069] The connecting rod 5 has a first connecting section 51 connected to the aquaculture tank 2 and a second connecting section 52 connected to the sewage tank 41. The extending direction of the first connecting section 51 is perpendicular to the normal plane of the aquaculture tank 2 where it is connected to the first connecting section 51, and the second connecting section 52 extends in the vertical direction.

[0070] The extending direction of the first connecting section 51 is perpendicular to the normal plane of the aquaculture tank 2 where it is connected to the first connecting section 51, optimizing the stress distribution of the aquaculture tank 2 and preventing the connecting rod 5 from damaging the aquaculture tank 2 when supporting it. In some embodiments, to improve the compressive capacity of the aquaculture tank 2, the bottom of the aquaculture tank 2 is constructed in a hemispherical or nearly hemispherical shape. Correspondingly, the first connecting section 51 points to the center of the hemisphere. The second connecting section 52 extends in the vertical direction to facilitate driving the sewage tank 41 to move up and down.

[0071] The side wall of the sewage tank 41 is in sliding fit with the inner wall of the sewage compartment 4. When the upper end of the side wall is lower than the first communication hole 6, the sewage compartment 4 is in communication with the first communication hole 6. The sewage tank 41 can also play a role in controlling the opening and closing of the first communication hole 6, that is, the sewage tank 41 can also form part of the switching device.

[0072] See Figure 1 As shown, the aquaculture tank 2 has a diversion pipe 22 extending into the bottom compartment 3, and the sewage discharge port 21 is provided at the end of the diversion pipe 22. The sewage in the aquaculture tank 2 directly flows into the bottom compartment 3 through the diversion pipe 22, as much as possible avoiding the sewage entering the support compartment 1, resulting in incomplete sewage discharge and thus affecting the water quality in the aquaculture tank 2.

[0073] A partition 31 is provided between the bottom compartment 3 and the support compartment 1. The partition 31 has a communication port, and the diversion pipe 22 passes through the communication port and enters the bottom compartment 3. The partition 31 plays a certain blocking role between the bottom compartment 3 and the support compartment 1, making the sewage entering the bottom compartment 3 not flow into the support compartment 1 as much as possible, preventing the support compartment 1 from being polluted.

[0074] The sewage discharge system further includes a siphon 9 that connects the support compartment 1 to the sea so that the water in the support compartment 1 can be discharged into the sea through siphon action.

[0075] In this solution, the siphon effect of the pipeline is utilized to control the position of the culture tank 2, thereby controlling the opening and closing of the first communication hole 6, avoiding the use of a pump for pumping water, saving energy consumption and avoiding the vibration caused by the pump for pumping water, and improving the growth environment of fish. In some preferred embodiments, a pump can also be provided for pumping water to make the drainage more thorough.

[0076] See Figure 1 , Figure 3 , Figure 5 As shown, the sewage discharge system further includes a drainage tank, which is connected to the sewage tank 4 through a second communication hole 7, and a filter screen is provided at the second communication hole 7. Under the action of the filter screen, the solid contaminants entering the sewage tank 4 are blocked in the sewage tank 4 and collected in the sewage tank 41, and the filtered sewage enters the drainage tank through the second communication hole 7, preventing or reducing the amount of solid contaminants directly discharged into the sea and improving the environmental friendliness of the sewage discharge system.

[0077] The drainage tank has a drainage port 81, and the filtered sewage in the drainage tank 8 can be discharged from the drainage port 81.

[0078] This embodiment also provides a culture ship, which includes the above sewage discharge system. The culture ship can utilize the above sewage discharge system to achieve real-time discharge and cleaning of sewage, effectively improve the water quality of the culture tank, and thus adapt to the long-term discharge of fish domestic sewage, which is beneficial to fish farming.

[0079] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only for illustration purposes, and the protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A sewage discharge system, characterized in that, the sewage discharge system includes: a support cabin; a breeding tank, the breeding tank is arranged in the support cabin, the breeding tank can float up and down with the change of the water level in the support cabin, a sewage discharge port is arranged at the bottom of the breeding tank, and a sewage discharge valve for controlling the opening and closing of the sewage discharge port is arranged at the sewage discharge port; a bottom cabin, the bottom cabin is communicated with the support cabin, and the sewage discharge port faces the bottom cabin; a sewage tank, a first communication hole communicated with the bottom cabin is opened on the side wall of the sewage tank; a switch device for controlling the opening and closing of the first communication hole, the switch device is linked with the breeding tank, when the breeding tank moves upward to a first position, the switch device closes the first communication hole, and when the breeding tank moves downward to a second position, the switch device opens the first communication hole; the switch device includes a guide plate, the guide plate is movably arranged in the bottom cabin and is linked with the breeding tank; wherein, when the breeding tank moves to the first position, the guide plate is higher than the first communication hole, and the support cabin is not communicated with the first communication hole; when the breeding tank moves to the second position, the guide plate is lower than the first communication hole, and the support cabin is communicated with the first communication hole.

2. The sewage discharge system according to claim 1, characterized in that, the guide plate arches towards the breeding tank.

3. The sewage discharge system according to claim 1, characterized in that, a sewage tank is detachably arranged at the bottom of the sewage tank.

4. The sewage discharge system according to claim 3, characterized in that, a connecting rod is arranged between the sewage tank and the breeding tank so that the sewage tank is linked with the breeding tank, and the sewage tank is detachably connected with the connecting rod.

5. The sewage discharge system according to claim 4, characterized in that, the connecting rod has a first connecting section connected with the breeding tank and a second connecting section connected with the sewage tank, the extending direction of the first connecting section is perpendicular to the normal plane of the breeding tank at the connection of the first connecting section, and the second connecting section extends in the vertical direction.

6. The sewage discharge system according to claim 3, characterized in that, the side wall of the sewage tank is in sliding fit with the inner wall of the sewage tank, and when the upper end of the side wall is lower than the first communication hole, the sewage tank is communicated with the first communication hole.

7. The sewage discharge system according to claim 1, characterized in that, the breeding tank has a guide pipe extending into the bottom cabin, and the sewage discharge port is arranged at the end of the guide pipe.

8. The sewage discharge system according to claim 7, characterized in that, a partition board is arranged between the bottom cabin and the support cabin, the partition board has a communication port, and the guide pipe passes through the communication port and enters the bottom cabin.

9. The sewage discharge system according to claim 1, characterized in that, the sewage discharge system further includes a siphon pipe, the siphon pipe connects the support cabin with the sea so that the water in the support cabin can be discharged into the sea through siphon action.

10. The sewage discharge system according to any one of claims 1-9, characterized in that, the sewage discharge system further includes a drainage tank, the drainage tank is communicated with the sewage tank through a second communication hole, and a filter screen is arranged on the second communication hole.

11. A breeding ship, characterized in that, the breeding ship includes the sewage discharge system according to any one of claims 1-10.

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