CN110754406A - Self-sewage-discharging net cage - Google Patents

Abstract

The invention discloses a self-sewage-discharging net cage, which relates to the technical field of fish culture and consists of a net-shaped box body, a sedimentation tank and a sewage collection pit; it also comprises a glass fiber reinforced plastic box bottom, a glass fiber reinforced plastic annular water baffle, a draft adjusting floating ring, a dirt collecting barrel, an aeration disc, an inflator pump, a water filling pump and a sewage pump. The invention has the advantage of culturing bottom layer fishes with weak food robbing capability.

Description

A self-sewage cage

technical field

The invention relates to the technical field of fish farming, in particular to a net cage for fish farming.

Background technique

In the prior art, fish with weak ability to grab food, such as sand pond snakehead, sturgeon, etc., these fish cannot be grabbed in the process of the feed falling, but the feed falls to the bottom of the cage, and the fish is then carried out. Foraging, eating for a long time. In conventional cage culture, when the feed falls to the bottom of the cage, the feed quickly leaks to the bottom of the cage, and these fish cannot fully forage for food in a very short period of time, so it is not suitable for the cultivation of these fish.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a self-discharging net cage suitable for cultivating fish with weak ability to grab food, aiming at the deficiencies of the prior art.

The present invention is a self-draining net box, which is composed of a net-shaped box body, a sedimentation tank and a sewage collection pit; the bottom of the net-shaped box body is a glass fiber reinforced plastic box bottom, and a glass fiber reinforced plastic annular water baffle is arranged at the bottom of the glass fiber reinforced plastic box. The mesh box body is provided with a cage draft depth adjustment floating ring, a dirt collection bucket is arranged inside the mesh box body, and an aeration pan is arranged on the upper part of the dirt collection bucket. The aeration pan passes through. The inflatable pipe is connected with an air pump; an annular water filling pipe is arranged at the bottom of the mesh box, the annular water filling pipe is provided with a water filling nozzle, and is connected with the filling pump through the inflatable pipe; the sewage collection bucket is guided by the sewage The pipe is connected to the sedimentation tank and the sewage collection pit through the sewage pump.

The blast gas disc is annular, the diameter is larger than the diameter of the sewage collecting bucket, and an annular air curtain is formed after opening.

The bottom of the glass fiber reinforced plastic box has an inclined slope from the periphery to the center.

The cage depth adjustment floating ring is a floating ring that can arbitrarily adjust the draft depth of the cage within the allowable range of the cage height.

The blasting plate is annular, and its diameter is larger than the diameter of the sewage collecting bucket. After opening, an annular air curtain is formed to avoid the fresh feed fed into the sewage collecting bucket and causing waste. The storm pan is open around the clock during the sewage removal period, increasing the oxygen content of the water body in the tank, improving the production speed of farmed fish and the fish carrying capacity of the cage.

The bottom of the glass fiber reinforced plastic has an inclined slope toward the center, which is beneficial to speed up the speed of sewage discharge and improve the thoroughness of sewage discharge.

The cage depth adjustment floating ring can arbitrarily adjust the draft depth of the cage within the range allowed by the depth of the cage. In this way, the draft depth of the cage can be selected according to the size and species of the cultured fish and the breeding season, which is beneficial to the growth needs of the fish.

The collection and treatment of pollutants produced in the breeding process by the self-draining cages keeps the water environment quality of the large water body where the cages are set at a high level, and the wastes in the sedimentation tank are dehydrated and fermented. It is also in line with the current concept of environmental protection first.

If the terrain of the sewage collection pit and the sedimentation tank is lower than the level of the large water body for aquaculture, the sewage collection pit and the sewage pump are not required, and the waste can directly enter the sedimentation tank through the sewage pipe.

Because the equipment is designed for the intensive breeding of bottom fish with weak ability to grab food, fish inhabit the bottom of the cage for a long time, and different fish, different seasons, and different growth stages of the same fish require the most The suitable water depth is different, in order to create a water depth that is most suitable for the growth of the fish, and improve the breeding efficiency. To this end, the design of the buoyancy ring is carried out, which can adjust the draft depth of the cage at any time to promote the growth of farmed fish.

The present invention has the advantage that the present invention has the advantage of cultivating bottom fish with weak ability to grab food.

Description of drawings

Figure 1 is a schematic structural diagram of a self-draining cage of the present invention.

Detailed ways

As shown in Figure 1, in the figure: 1, sedimentation tank, 2, sewage collection pit, 3, air pump, 4, sewage pump, 5, sewage pipe, 6, large water body for aquaculture, 7, aeration pipe, 8, net Shaped box, 9. Water surface, 10. Floating ring for adjusting the draft depth of cage, 11. Water filling nozzle, 12. Gas pan, 13. Sewage collecting bucket, 14. Annular water filling pipe, 15. FRP tank bottom, 16 , FRP ring baffle, 17, filling water pump.

The present invention is a self-draining net box, which is composed of a net-shaped box body, a sedimentation tank and a sewage collection pit; There is a floating ring for adjusting the draft depth of the cage, a sewage collecting bucket is arranged inside the mesh box, and an aeration plate is arranged on the upper part of the sewage collecting bucket. The aeration plate is connected with an air pump through an air tube; The bottom of the box is provided with an annular water filling pipe, the annular water filling pipe is provided with a water filling nozzle, and is connected with the filling pump through the air filling pipe;

The invention is a self-sewage net cage designed for high-density intensive culture of special fish with weak snatch ability (such as sand pond snakehead, sturgeon sturgeon, sturgeon sturgeon, etc.). Its working principle is: stop the air pump before feeding each time, turn on the water pump, the water flow reaches the water filling nozzle through the annular flushing pipe, the direction of water spraying from multiple water filling nozzles is the same, and after the water flow encounters the FRP ring baffle Change the direction to form a circulation in the box. Under the action of the circulation, the wastes such as fish excrement and bait move to the center of the bottom of the glass fiber reinforced plastic box. The bottom of the glass fiber reinforced plastic box has an inclined slope towards the center. The waste reaches the central sewage collecting bucket at the bottom of the box, and falls into the sewage collecting bucket. The waste collected in the sewage collecting bucket reaches the sewage collecting pit through the sewage guide pipe, and the waste is discharged to the sedimentation tank through the sewage pump.

The bottom-dwelling fish with weak snatch ability, when feeding the feed, only a very small part of the feed is caught by the fish in the process of falling in the water body, and the vast majority of the feed sinks to the bottom of the cage, and the fish is carried out at the bottom of the cage. For feeding, the inclination angle of the bottom of the cage is not easy to be too large. If the inclination angle is too large, the feed will easily slide to the center and concentrate, resulting in a small feeding place for fish. Due to the high density of fish breeding, it is not conducive to the feeding of fish. It is recommended not to exceed an angle of 10 degrees.

The aeration ring in the center has two functions: (1) to increase the dissolved oxygen in the water body in the cage; (2) during the feeding process of the fish, it is inevitable that the feed will slide down the middle of the bottom of the cage, and when it falls close to the aeration ring When the feed is stopped, the airflow will prevent the feed from continuing to descend, and avoid falling into the sewage collection bucket, resulting in waste.

Since the inclination angle of the bottom of the cage should not be too large, a large amount of dirt will remain at the bottom of the cage. The purpose of designing the annular flushing pipe is to wash and concentrate the dirt, so as to achieve the thoroughness of sewage discharge and provide fish with a good feeding and activity environment. place.

Claims (4)

1. The utility model provides a from blowdown box with a net which characterized in that: it consists of a net-shaped box body, a sedimentation tank and a sewage collection pit; the bottom of the net-shaped box body is a glass fiber reinforced plastic box bottom, a glass fiber reinforced plastic annular water baffle is arranged at the glass fiber reinforced plastic box bottom, a net box draft adjusting floating ring is arranged on the net-shaped box body, a dirt collecting barrel is arranged inside the net-shaped box body, and an aeration disc is arranged at the upper part of the dirt collecting barrel and is connected with an inflator pump through an inflation pipe; the bottom of the net-shaped box body is provided with an annular water filling pipe, and the annular water filling pipe is provided with a water filling nozzle and is connected with a water filling pump through an inflation pipe; the sewage collecting barrel is connected with the sedimentation tank and the sewage collecting pit through a sewage guide pipe and a sewage pump.

2. The self-draining net cage according to claim 1, wherein: the aeration disc is annular, the diameter of the aeration disc is larger than the caliber of the dirt collecting barrel, and an annular air curtain is formed after the aeration disc is opened.

3. The self-draining net cage according to claim 1, wherein: the bottom of the glass fiber reinforced plastic box is provided with an inclined slope from the periphery to the center.

4. The self-draining net cage according to claim 1, wherein: the net cage depth adjusting floating ring is a floating ring capable of adjusting the draught depth of the net cage at will within the range allowed by the height of the net cage.

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