Drainage system for a marine hatchery

Abstract

The utility model discloses a kind of drainage systems of aquaculture pond, it includes aquaculture pond, lower filter cylinder, standpipe and upper filter cylinder, the aquaculture pond is equipped with aquaculture cavity with opening upwards, its bottom is equipped with sewage tank and sewage outlet, and near low far high slope is equipped with in sewage tank both sides, the aquaculture pond side wall is along the periphery of two slopes and is opened with multiple lower water inlets with equal interval, and is equipped with lower water inlet pipe inside, and dirty is washed slope by lower water inlet pipe water, dirty flows into sewage tank along slope, and then dirty is discharged by sewage outlet;The upper filter cylinder is arranged at the top of standpipe, and its position is lower than the water level of aquaculture cavity, and dirty on water surface is carried by water flow and passes through upper filter cylinder, and is discharged along standpipe. The utility model realizes the orientation of dirty drainage on one hand, realizes the dirty discharge operation of upper and lower water layer on the other hand, without carrying out large-area decontamination operation, save manpower and material resources.

Description

Technical Field

[0001] This utility model relates to the field of aquatic seedling technology, and in particular to a drainage system for aquatic seedling ponds. Background Technology

[0002] In the field of aquaculture seedling production, the drainage system of the seedling pond is a key facility for maintaining stable water quality and ensuring the survival and growth of larvae. Currently, most aquaculture seedling ponds adopt a traditional structure with a single drainage outlet at the bottom of the pond, connected to an external drainage system via pipes. Some seedling ponds also have simple filters installed at the drainage outlet to block solid impurities.

[0003] However, this type of drainage method has significant drawbacks. Uneaten feed, larval feces, and dead remains generated during the seedling stage easily adhere to the filter screen or the inner wall of the drain outlet. If the drain outlet is too small, it can cause blockage, reducing drainage efficiency and requiring frequent manual disassembly and cleaning. This cumbersome operation can disturb the larvae, increasing the risk of stress-induced mortality. Furthermore, it cannot effectively remove floating debris based on differences in water quality between the upper and lower layers of the pond, hindering precise water quality management. These problems severely restrict the efficiency and survival rate of aquaculture seedlings, necessitating an improvement to the existing drainage structure. Utility Model Content

[0004] The purpose of this utility model is to provide a drainage system for aquatic seedling ponds.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A drainage system for an aquatic seedling pond includes a seedling pond, a lower filter cylinder, a vertical pipe, and an upper filter cylinder. The seedling pond has a seedling chamber with an upward-facing opening. Its bottom is provided with a sludge trough and a sludge outlet. There are slopes with a lower slope near the bottom and a higher slope far away on both sides of the sludge trough. Multiple lower water inlets are evenly spaced along the perimeter of the two slopes on the side wall of the seedling pond, and a lower water inlet pipe is provided inside. Water flows out through the lower water inlet pipe to flush the slopes. Dirt flows along the slopes into the sludge trough and is then discharged through the sludge outlet. The lower filter cylinder is fitted inside the drain outlet to isolate the aquatic organisms in the seedling chamber. The vertical pipe is vertically installed at the drain outlet. The bottom of the lower filter cylinder is embedded in the drain outlet. The main body is placed in the seedling chamber and surrounds the vertical pipe. The upper filter cylinder is installed at the top of the vertical pipe. Its position is lower than the water level in the seedling chamber. The water flow carries dirt from the water surface through the upper filter cylinder and is discharged along the vertical pipe.

[0006] Furthermore, the lower water inlet pipe is connected to the water tank, and the water pressure is increased by a water pump installed in the water tank. The pressurized water washes away the dirt on the slope. The water pump is connected to a controller, which controls the water pressure.

[0007] Furthermore, a sludge tank is provided at the bottom of the seedling pond, and the sludge tank is connected to the drain outlet. The sludge in the seedling chamber enters the sludge tank along the drain outlet. The side wall of the sludge tank is provided with a drain pipe for discharging the sludge from the sludge tank.

[0008] Furthermore, the dirty tank is equipped with a propeller and a drive motor. The dirty tank has a frame at the opening of the sewage pipe and a side opening on one side. The frame has a rotating opening, and the rotating opening contains a bearing and a rotating shaft. The propeller is mounted on the rotating shaft. The drive motor is located on the outer wall of the dirty tank, and its output part enters the dirty tank from the outside through the side opening and is connected to the rotating shaft. Both are equipped with gear meshing connections. The drive motor drives the propeller to quickly discharge the dirty water.

[0009] Furthermore, the side opening is provided with a bearing that is connected to the drive motor.

[0010] Furthermore, the sludge bin has an opening at the bottom or side wall and is fitted with a pipe body connected to the vertical pipe, through which the sludge inside the vertical pipe is discharged.

[0011] Furthermore, both the upper and lower filter cylinders include a cylindrical frame and a filter screen, with the filter screen arranged around the side wall of the cylindrical frame.

[0012] Furthermore, the top of the lower filter cylinder is provided with an annular plate along the inner circumference of its cylindrical frame. The annular plate surrounds the vertical tube and is rotatably mounted at its bottom via a hinge. The four baffles are arranged at equal intervals around the vertical tube. Each baffle has N rings on the side closest to the vertical tube and is tied with a pull rope. The other end of the pull rope is provided with a locking block and is locked in the slot of the upper filter cylinder. The top of the upper filter cylinder is provided with four slots, corresponding to the four baffles and the pull rope respectively.

[0013] By adopting the above technical solution, this utility model has the following advantages compared with the prior art: 1. The seedling pond of this utility model is equipped with two slopes and a sewage discharge trough. The slopes guide the dirt into the sewage discharge trough. Small dirt can then pass through the lower filter cylinder and enter the sewage outlet for discharge. Large dirt can be manually scooped out of the sewage discharge trough, eliminating the need for large-scale cleaning operations and saving manpower and resources. The vertical pipe, in conjunction with the filter cylinder, allows the water flow to guide the dirt on the water surface into the vertical pipe, realizing the discharge of dirt from both the upper and lower layers.

[0014] 2. The upper and lower filter cylinders of this utility model are used to isolate aquatic organisms in the seedling pond, allowing only dirt and water to pass through. Together with the lower water inlet pipe, they flush the slope and guide the dirt at the bottom to the drainage trough. The water pressure of the lower water inlet pipe can be adjusted to meet the needs of different times and conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a bottom view of the present invention; Figure 3 This is a bottom view of the present invention with a dirt tank; Figure 4 This is a cross-sectional view of the present invention.

[0016] Explanation of reference numerals in the attached figures: Seedling pool 1; lower filter cylinder 2; vertical pipe 3; upper filter cylinder 4; sludge bin 5; seedling chamber 11; sludge drain 12; sludge outlet 13; slope 14; lower water inlet 15; ring plate 21; baffle 22; pull rope 23; sludge outlet pipe 51. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] It should be noted that in this utility model, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element of this utility model must have a specific orientation, and therefore should not be construed as a limitation of this utility model. Example

[0019] refer to Figures 1 to 4 As shown, this utility model discloses a drainage system for an aquatic seedling pond, including a seedling pond 1, a lower filter cylinder 2, a vertical pipe 3, and an upper filter cylinder 4. The seedling pond 1 is provided with a seedling cavity 11 with an upward opening. The bottom of the seedling pond is provided with a sludge trough 12 and a sludge outlet 13. On both sides of the sludge trough 12, there are slopes 14 with a lower slope near the bottom and a higher slope far from the top. The inclination angle of the slope is not limited in this embodiment and is designed according to the size and breeding needs, ranging from 5 to 30 degrees. Multiple lower water inlets 15 are opened at equal intervals along the perimeter of the two slopes on the side wall of the seedling pond 1, and a lower water inlet pipe is provided inside. Water flows out through the lower water inlet pipe to flush the slope 14. Dirt flows along the slope into the sludge trough 12 and is then discharged through the sludge outlet 13.

[0020] The lower filter cylinder 2 is fitted inside the drain outlet 13 to isolate the aquatic organisms in the seedling chamber 11. The vertical pipe 3 is vertically installed in the drain outlet 13. The bottom of the lower filter cylinder 2 is embedded in the drain outlet 13. The main body is placed in the seedling chamber 11 and surrounds the vertical pipe 3. The upper filter cylinder 4 is installed at the top of the vertical pipe 3. Its position is lower than the water level in the seedling chamber 11. The water flow carries the dirt on the water surface through the upper filter cylinder 4 and is discharged along the vertical pipe 3.

[0021] The seedling pond 1 is equipped with two ramps 14 and a sewage discharge trough 12. The ramps 14 guide the dirt into the sewage discharge trough 12. Small dirt particles can pass through the lower filter cylinder 2 and enter the sewage outlet 13 for discharge. Larger dirt particles can be manually scooped out of the sewage discharge trough 12 without the need for large-scale cleaning operations, saving manpower and resources. The vertical pipe 3, in conjunction with the filter cylinder 4, allows the water flow to guide the dirt on the water surface into the vertical pipe 3, realizing the discharge of dirt from both the upper and lower layers.

[0022] The lower water inlet pipe is connected to the water tank, and a water pump installed in the water tank increases the water pressure. The pressurized water washes away the dirt on the slope 14. The water pump is connected to a controller, which controls the water pressure. The water tank can contain water that has been cleaned and filtered from wastewater and newly added water, specifically for seedling cultivation and breeding. This embodiment does not limit the scope of the water tank.

[0023] The bottom of the seedling pool 1 is provided with a sludge box 5, which is connected to the drain outlet 13. The sludge in the seedling chamber 11 enters the sludge box 5 through the drain outlet 13. The side wall of the sludge box 5 is provided with a drain pipe 51 for discharging the sludge from the sludge box.

[0024] The dirty tank 5 is equipped with a propeller and a drive motor. The dirty tank 5 has a frame at the opening of the sewage pipe and a side opening on one side. The frame has a rotating opening, and the rotating opening has a bearing and a rotating shaft. The propeller is mounted on the rotating shaft. The drive motor is located on the outer wall of the dirty tank. Its output part enters the dirty tank from the outside through the side opening and is connected to the rotating shaft. Both are equipped with gear meshing. The drive motor drives the propeller to quickly discharge the dirty water.

[0025] The side opening is equipped with a bearing that connects to the drive motor.

[0026] The sludge bin 5 has an opening at the bottom or side wall and is equipped with a pipe body connected to the vertical pipe 3, through which the sludge inside the vertical pipe 3 is discharged.

[0027] Both the upper filter cylinder 4 and the lower filter cylinder 2 include a cylindrical frame and a filter screen, with the filter screen arranged around the side wall of the cylindrical frame. The cylindrical frame is preferably installed by fitting it in a sleeve configuration, its structure adapted to the size of the corresponding vertical pipe and drain outlet.

[0028] The lower filter cylinder 2 has an annular plate 21 at its top along the inner circumference of its cylindrical frame. The annular plate 21 surrounds the vertical pipe 3, and four baffles 22 are rotatably mounted at its bottom via hinges. The four baffles 22 are evenly spaced around the vertical pipe 3. Each baffle has N rings on the side closest to the vertical pipe 3, and a pull rope 23 is tied to it. The other end of the pull rope 23 has a locking block that locks into the slot of the upper filter cylinder 4. The top of the upper filter cylinder 4 has four slots, corresponding to the four baffles 22 and the pull rope 23 respectively. Removing and releasing the pull rope 23 causes the baffles 22 to rotate downwards and open due to gravity. Opening the baffles 22 allows the vertical pipe to be removed and accelerates the discharge of dirt.

[0029] Concentrating the dirt in one area can reduce the degree of contamination in other areas and make it easier for workers to carry out cleaning operations, eliminating the need for comprehensive cleaning and requiring only cleaning of the sewage trough.

[0030] The upper filter cylinder 4 and the lower filter cylinder 2 are used to isolate the aquatic products in the seedling pond 1, allowing only dirt and water to pass through. Together with the lower water inlet pipe, they flush the slope 14, guiding the dirt at the bottom to the sewage trough 12. The water pressure of the lower water inlet pipe can be adjusted to meet the needs of different times and different conditions.

[0031] The main purpose of the upper filter cylinder 4 and the lower filter cylinder 2 in this embodiment is to block aquatic organisms. Their aperture size can be adjusted according to the requirements of aquaculture, but this embodiment does not limit it.

[0032] The length of the vertical pipe in this embodiment is not limited and can be adjusted according to changes in water level. Adjustment can be made by changing the length of the vertical pipe. The upper filter screen is generally positioned 1-3 cm below the water level.

[0033] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A drainage system for an aquaculture rearing pond, characterised in that: The system includes a seedling tank, a lower filter cylinder, a vertical pipe, and an upper filter cylinder. The seedling tank has a seedling cavity with an upward-facing opening. Its bottom is equipped with a drainage trough and a drainage outlet. There are slopes on both sides of the drainage trough, with the slopes being lower near the bottom and higher far from the top. Multiple lower water inlets are evenly spaced along the perimeter of the two slopes on the side wall of the seedling tank, and a lower water inlet pipe is installed inside. Water flows out through the lower water inlet pipe to flush the slopes, and dirt flows along the slopes into the drainage trough, and then the dirt is discharged through the drainage outlet. The lower filter cylinder is fitted inside the drain outlet to isolate the aquatic organisms in the seedling chamber. The vertical pipe is vertically installed at the drain outlet. The bottom of the lower filter cylinder is embedded in the drain outlet. The main body is placed in the seedling chamber and surrounds the vertical pipe. The upper filter cylinder is installed at the top of the vertical pipe. Its position is lower than the water level in the seedling chamber. The water flow carries dirt from the water surface through the upper filter cylinder and is discharged along the vertical pipe.

2. A drainage system for an aquaculture pond as defined in claim 1, wherein: The lower water inlet pipe is connected to the water tank, and the water pressure is increased by a water pump installed in the water tank. The pressurized water washes away the dirt on the slope. The water pump is connected to a controller, which controls the water pressure.

3. The drainage system for an aquatic seedling pond as described in claim 1, characterized in that: A sludge tank is provided at the bottom of the seedling pond. The sludge tank is connected to the drain outlet. The sludge in the seedling chamber enters the sludge tank through the drain outlet. A drain pipe is provided on the side wall of the sludge tank for discharging the sludge.

4. The drainage system for an aquatic seedling pond as described in claim 3, characterized in that: The dirty tank is equipped with a propeller and a drive motor. The dirty tank has a frame at the opening of the sewage pipe and a side opening on one side. The frame has a rotating opening, and the rotating opening contains a bearing and a rotating shaft. The propeller is mounted on the rotating shaft. The drive motor is located on the outer wall of the dirty tank. Its output part enters the dirty tank from the outside through the side opening and is connected to the rotating shaft. Both are equipped with gear meshing. The propeller is driven by the drive motor to quickly discharge the dirty water.

5. The drainage system for an aquatic seedling pond as described in claim 4, characterized in that: The side opening is equipped with a bearing that connects to the drive motor.

6. The drainage system for an aquatic seedling pond as described in claim 4, characterized in that: The sludge bin has an opening at the bottom or side wall and is fitted with a pipe body that connects to the vertical pipe, through which the sludge inside the vertical pipe is discharged.

7. The drainage system for an aquatic seedling pond as described in claim 1, characterized in that: Both the upper and lower filter cylinders include a cylindrical frame and a filter screen, with the filter screen arranged around the side wall of the cylindrical frame.

8. The drainage system for an aquatic seedling pond as described in claim 7, characterized in that: The lower filter cylinder has an annular plate at the top along the inner circumference of its cylindrical frame. The annular plate surrounds the vertical tube and has four baffles mounted at its bottom via hinges. The four baffles are arranged at equal intervals around the vertical tube. Each baffle has N rings on the side closest to the vertical tube and is tied with a pull rope. The other end of the pull rope has a locking block that locks into the slot of the upper filter cylinder. The top of the upper filter cylinder has four slots, corresponding to the four baffles and the pull rope respectively.

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