CN220694170U - Aquaculture system - Google Patents

Abstract

The utility model discloses an aquaculture system, relates to the field of aquaculture, and solves the technical problem that the current land-based round pond and cement pond cultivation mode is inconvenient in pollution discharge and feeding. The device comprises a plurality of flushing and material throwing ponds and a sewage collecting pond, wherein a flushing and material throwing device capable of intermittently throwing feed is arranged at the top end of one side of each flushing and material throwing pond, the bottom of each flushing and material throwing pond is obliquely arranged, and the bottom end of the other side of each flushing and material throwing pond is communicated with the sewage collecting pond through a drain pipe. The utility model has the advantages of convenient use, water quality improvement, fish growth promotion, improvement of uniformity of the culture terminal for culturing the fish, labor and time cost saving and work efficiency enhancement.

Description

Aquaculture system

Technical Field

The present utility model relates to the field of aquaculture, and more particularly to an aquaculture system.

Background

Because the yield of the unit area of the traditional pond culture is relatively low, the occupied land area is large, the concentrated treatment of the culture tail water is difficult, the traditional pond culture is gradually replaced by facility fishery such as industrialization, and the facility fishery such as the industrialization is also a high-quality fishery healthy development mode which is greatly sponsored and advocated by the state at present. In the facility fishery, the land-based round pond and the intensive cement pond are most suitable for the development condition of China, because the construction technology and the input cost of the land-based round pond and the intensive cement pond are not strict, the cultivation yield is very high, the method is beneficial to forming fishery industrialization, is an important direction of the development of the fishery industry, and is also beneficial to the development of agricultural rural areas and the vibration of villages in China. With the increasing of cultivation scale of land-based round ponds and the like in China, land-based round ponds and intensive cement pond cultivation become a main mode of land-based cultivation in China. The land-based round pond and the intensive cement pond have the characteristics of small occupied area, high yield per unit area and convenience in sewage disposal, are beneficial to the centralized treatment of the culture tail water, are beneficial to centralized management, and are suitable for the environments of beach and some non-grain lands. But at the same time, the land-based round pool and cement pool have some defects that the sewage is not convenient to drain and catch, water enters from the upper pool opening, the bottom of the funnel of the round pool, namely the lowest part of the funnel, is connected with a drain pipe for draining, and the sewage is basically drained by providing centripetal force by the circular flow of pool water, so that larger water flow is needed, and the sewage is difficult to realize for the pool with deeper water. And the pollution discharge of the cement pool is more difficult, and basically the pollution discharge cannot be performed. At present, the cement pond is less used in intensive cultivation, and can only be used in seedling cultivation and running water cultivation which can carry out artificial bottom suction and decontamination. In addition, the traditional land-based round pond cultivation is carried out by adopting a manual intermittent material throwing mode, but the labor intensity is high, and the efficiency is low. For this purpose, many farmers use a timed slinger. However, the land-based round pond is generally composed of a plurality of small ponds, if each small pond adopts a material throwing machine, the cultivation cost is high, the on-site wire drawing and wiring are needed, the waterproof work is needed, and the transformation difficulty is high. If a plurality of small Chi Gong are used as a thrower, farmers are required to push the thrower to move among different small pools, and the problems of high labor intensity and low efficiency exist.

Disclosure of Invention

The utility model aims to solve the technical problems of the prior art, provides an aquaculture system, and solves the problems of pollution discharge and inconvenient feeding of the conventional land-based round pond and cement pond culture mode.

The aquaculture system comprises a plurality of flushing and throwing tanks and a sewage collecting tank, wherein a flushing and throwing device capable of throwing feed intermittently is arranged at the top end of one side of each flushing and throwing tank, the bottom of each flushing and throwing tank is obliquely arranged, and the bottom end of the other side of each flushing and throwing tank is communicated with the sewage collecting tank through a drain pipe.

The bottom surface inside the flushing and throwing tank comprises a long inclined surface, an arc surface and a short inclined surface, wherein the long inclined surface is arranged on one side, close to the flushing and throwing device, of the bottom of the flushing and throwing tank, the long inclined surface, the arc surface and the short inclined surface are sequentially connected, and the drain pipe is arranged below the short inclined surface.

Further, the flushing and throwing device comprises a flusher and a thrower; the material throwing device comprises a feed hopper, a discharging hopper is fixedly connected to the bottom end of the feed hopper, a material throwing pipe communicated with the discharging hopper is arranged below the discharging hopper, the water outlet end of the water flushing device is communicated with the communicating position of the discharging hopper and the material throwing pipe, and a double-control valve is arranged among the feed hopper, the discharging hopper and the material throwing pipe.

Furthermore, the double-control valve comprises a first sealing piece, a second sealing piece and a movable connecting rod, wherein the first sealing piece is hinged to the bottom end of the feeding hopper, the second sealing piece is hinged to the lower portion of the feeding hopper, the movable connecting rod is hinged between the first sealing piece and the second sealing piece, and a lower folding section is arranged at one end, far away from the hinged end, of the second sealing piece.

Furthermore, a second valve is arranged in the feed hopper.

Furthermore, the water flushing device comprises a water pump and a water tank, the water pump is arranged in a water source, the water outlet end of the water pump is fixedly connected with a water outlet pipe, the water outlet pipe extends into a flushing and throwing pool, a valve I is arranged on the water outlet pipe, and the water outlet pipe is communicated with a water inlet below the water tank through a water inlet pipe section;

the movable mounting has the piston board in the water tank, install compression spring between piston board and the water tank top inner wall, the fixed hemisphere stopper that is equipped with in below of piston board is acted as go-between, hemisphere stopper below fixed mounting of acting as go-between has the hemisphere stopper, hemisphere stopper is equipped with extension spring to act as go-between the overcoat, the top fixedly connected with pressure regulating pipe of water tank, water tank bottom fixedly connected with connecting pipe, the hemisphere stopper is located the connecting pipe mouth of pipe directly over, just the hemisphere stopper can form the shutoff to the connecting pipe, the water tank is linked together with the intercommunication department of hopper and throwing pipe down.

Furthermore, a net cage which is arranged in a suspending manner is arranged in the sewage collecting tank, the net cage is soaked in water in the sewage collecting tank, the water outlet ends of all the water discharging pipes are positioned above the net cage, and a sewage discharging pipe is fixedly connected to the bottom of the sewage collecting tank.

Further, a fish hanging device extending to the upper part of the net cage is arranged at the periphery of the sewage collecting tank.

Further, the fish hanging device comprises a bracket, a winch and a fish containing basket; the fish basket is characterized in that the winch is arranged on the support, the support rod is fixedly connected to the inside of the fish basket, the rotating wheel of the winch is fixedly connected with the support rod through a fish hanging pull wire, an eccentric block is arranged on the fish hanging pull wire, an arc-shaped guide rod is movably arranged in the fish basket, the eccentric block is positioned at the center of the arc-shaped guide rod, the support rod and the fish basket, and a fish unloading structure is arranged at the bottom of the fish basket.

Still further, unload fish structure includes a fish mouth, a fish mouth fixedly connected with dead lever, the axis of rotation is articulated to the one end of dead lever, the other end of dead lever is articulated to be installed movable lock, movable lock can restrict the rotation of axis of rotation, a fixedly connected with reset spring on the movable lock, reset spring's one end is connected with the dead lever, the bottom fixedly connected with stay cord of movable lock, the bottom fixed mounting of axis of rotation has the sphere net.

Advantageous effects

The utility model has the advantages that:

1. through being provided with the bath and throwing the material pond and flushing and throwing the material device of throwing on the material pond, the bath forms rich water stream, and the fodder of throwing disperses, and fish top water eats the material, makes the particulate matter in bottom of the pool and the pond be convenient for deposit and discharge at the short inclined plane of bath and throwing the material pond, can carry out the blowdown better, improves quality of water, promotes fish growth.

2. Through being provided with throwing glassware and bath, the bath can provide clearance formula water spray, and throwing glassware plays the effect of artifical throwing, can throw the feed according to factors such as the condition of different weather, temperature, fish, more rationally and scientifically breeds fish, promotes the growth of fish better, increases and breeds fish output.

3. Through being provided with the box with a net and hanging the fish ware, the fish of different growth stages can be sieved to the fish sieve in the box with a net, hangs the fish ware and catches up the fish through machinery and the structure that can not the back-off, can more be favorable to throwing something and feeding, improves the breed terminal degree of consistency of breeding the fish, uses manpower sparingly and time cost, strengthens work efficiency.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a cultivation system according to the present utility model;

FIG. 2 is a schematic view of a fan-shaped structure of a flushing and throwing tank of the present utility model;

FIG. 3 is a schematic view of a rectangular flush bowl according to the present utility model;

FIG. 4 is a schematic view of a flusher according to the present utility model;

FIG. 5 is a schematic diagram of a thrower of the present utility model;

FIG. 6 is a schematic view of a dirt collection tank of the present utility model;

FIG. 7 is a schematic diagram of a second embodiment of the dirt collection tank of the present utility model;

FIG. 8 is a schematic view of the fish hanging apparatus of the present utility model;

FIG. 9 is a schematic view of a fish basket according to the present utility model;

fig. 10 is a schematic view of the fish unloading structure of the present utility model.

Wherein: 1-flushing material throwing pool, 2-flushing material throwing device, 3-dirt collecting pool, 4-road, 5-material throwing device, 6-flushing device, 7-long inclined plane, 8-arc surface, 9-short inclined plane, 10-feeding hopper, 11-water tank, 12-water inlet pipe section, 13-valve I, 14-water outlet pipe, 15-water pump, 16-pressure regulating pipe, 17-hemispherical stopper, 18-compression spring, 19-piston plate, 20-tension spring, 21-hemispherical stopper pull wire, 22-connecting pipe, 23-valve II, 24-double control valve, 25-lower hopper, 26-sealing sheet I, 27-movable connecting rod, 28-sealing sheet II, 29-material throwing pipe, 30-lower folded section, 31-blow-down pipe, 32-net cage, 33-water discharging pipe, 34-windlass, 35-fish hanging pull wire, 36-fish basket, 37-eccentric block, 38-arc guide rod, 39-supporting rod, 40-rotating shaft, 41-spherical net, 42-movable lock, 43-stay rope, 44-fixing rod and 45-reset spring.

Detailed Description

The utility model is further described below in connection with the examples, which are not to be construed as limiting the utility model in any way, but rather as falling within the scope of the claims.

Referring to fig. 1-10, the aquaculture system of the utility model comprises a plurality of flushing and throwing tanks 1 and a sewage collecting tank 3, wherein a flushing and throwing device 2 capable of intermittently throwing feed is arranged at the top end of one side of each flushing and throwing tank 3, the bottom of each flushing and throwing tank 1 is obliquely arranged, and the bottom end of the other side of each flushing and throwing tank 1 is communicated with the sewage collecting tank 3 through a drain pipe 33.

As shown in fig. 3, the bottom surface inside the flushing and throwing tank 1 comprises a long inclined surface 7, an arc surface 8 and a short inclined surface 9. The long inclined plane 7 is arranged at one side of the bottom of the flushing and throwing pool 1, which is close to the flushing and throwing device 2, the long inclined plane 7, the circular arc surface 8 and the short inclined plane 9 are sequentially connected, and the drain pipe 33 is arranged below the short inclined plane 9. The long inclined plane accounts for 75-80% of the total length of the pool bottom, and the gradient is about 2.0-2.5 degrees; the arc surface accounts for 4% -5% of the total length of the pool bottom, and the gradient is 0.5-1 m; the short inclined plane accounts for 15% -16% of the total length of the pool bottom, and the inclined plane is inclined by about 2.5-5 degrees from the periphery to the drain pipe orifice.

The flushing and throwing pool 1 is not limited to land-based round pools, and comprises a sector, a rectangular pool and an irregular pool shape, and a cement pool or a cement-based soil ridge pool is required. The flushing material throwing tanks 1 can be on the same plane or not coplanar.

The two kinds of sewage collecting tanks 3 are shown in fig. 1, wherein the depth of the second sewage collecting tank is equal to the maximum depth of the pond plus the standard depth of the sewage collecting tank, and the water outlet of the pond is positioned at the opening of the standard sewage collecting tank; as shown in fig. 2, the first sewage collecting pool is formed by building a pond at the same ground level, and the depth is standard depth.

The standard sewage collecting tank is designed according to the maximum pond yield, the standard sewage collecting tank is 2 meters deep, the total tonnage of fish yield is the total volume of the standard sewage collecting tank, and the volume radius formula of the standard sewage collecting tank is calculated by using the standard sewage collecting tank of the round tank: the maximum total pond fish production (ton) divided by 6.18 and 1.1 (fish density) is given as the square of the number.

The flushing and throwing device 2 comprises a flushing device 6 and a throwing device 5. As shown in fig. 6, the thrower 5 comprises a feed hopper 10, a lower hopper 25 is fixedly connected to the bottom end of the feed hopper 10, a throwing pipe 29 communicated with the lower hopper 25 is arranged below the lower hopper 25, the water outlet end of the flusher 6 is communicated with the communication position of the lower hopper 25 and the throwing pipe 29, and a double control valve 24 is arranged among the feed hopper 10, the lower hopper 25 and the throwing pipe 29. A second valve 23 is arranged in the feed hopper 10.

As shown in fig. 4, the flushing device 6 comprises a water pump 15 and a water tank 11, the water pump 15 is installed in a water source, the water outlet end of the water pump 1 is connected with a water outlet pipe 14, the water outlet pipe 14 extends into the flushing and throwing pool 1, a valve I13 is arranged on the water outlet pipe 14, and the water outlet pipe 14 is communicated with a water inlet below the water tank 11 through a water inlet pipe section. The purpose of flushing is to form a rich water flow, disperse the thrown feed, and fish is jacked to eat the feed, fish swims in the same direction and the water flow acts, so that the particulate matters in the pool bottom and the pool water are convenient to be deposited and discharged at the other end with a short inclined surface 9. The flushing is carried out by arranging a water pump 18 in a water well which is positioned at one end of the long inclined plane 7, and the bottom of the water well is communicated with the flushing material throwing pool 1.

As shown in fig. 5, a piston plate 19 is movably installed in the water tank 11. A compression spring 18 is arranged between the piston plate 19 and the inner wall of the top of the water tank 11, a hemispherical stopper stay wire 21 is fixedly arranged below the piston plate 19, a hemispherical stopper 17 is fixedly arranged below the hemispherical stopper stay wire 21, an extension spring 20 is sleeved outside the hemispherical stopper stay wire 21, a pressure regulating pipe 16 is fixedly connected to the top end of the water tank 11, a connecting pipe 22 is fixedly connected to the bottom of the water tank 11, the hemispherical stopper 17 is positioned right above the pipe orifice of the connecting pipe 22, the hemispherical stopper 17 can form a blocking of the connecting pipe 22, and the water tank 11 is communicated with the communicating position of the blanking hopper 25 and the throwing pipe 29.

As shown in fig. 6, the double control valve 24 includes a first flap 26, a second flap 28, and a movable link 27. The first sealing piece 26 is hinged to the bottom end of the feed hopper 10, the second sealing piece 28 is hinged to the lower portion of the lower hopper 25, a movable connecting rod 27 is hinged between the first sealing piece 26 and the second sealing piece 28, and a lower folding section 30 is arranged at one end, away from the hinged end, of the second sealing piece 28.

The lower fold 30 tends to block the connecting tube 25 and when the first flap 26 closes the bottom outlet of the hopper 10, the second flap 28, which closes the bottom outlet of the lower hopper 25, opens and feed falls from the lower hopper 25 into the feed throwing tube 29. The water flow in the connecting pipe 22 has an opening and closing effect on the double control valve 24, when the second sealing piece 28 seals the discharging hopper 25, the first sealing piece 26 is opened, and the feed falls from the feed hopper 10 to the discharging hopper 25. When the water flow from the flusher 6 impacts the second sealing piece 28 to seal the discharge hole at the bottom of the discharging hopper 25, the feed falls into the discharging hopper 25, and the water flow flushes and throws the feed in the throwing pipe 29 into the flushing throwing pool 1. When there is no water pressure, the bottom of the hopper 10 is sealed and the feed in the discharge hopper 25 falls into the feed throwing pipe 29. Intermittent water spraying makes the feed throw out, and plays a role in manual throwing.

In a state where the hemispherical stopper 17 closes the water outlet of the water tank 11, external water is filled into the water tank 11 by the water pump 15. During pumping, as the amount of water below the piston plate 19 increases, the piston plate 19 moves upward while compressing the compression spring 18 and elongating the extension spring 20. After the piston plate 19 has been moved up to a certain position and a pulling action of the semi-spherical plug 17 has been established by the semi-spherical plug pull wire 21, the semi-spherical plug 17 will be pulled up. And the semi-spherical plug 17 will be pulled up and away from the water outlet rapidly under the spring force of the extension spring 20, thereby opening the water outlet. At this point the water in the tank 11 will flow to the thrower 5.

In the present utility model, the water supply amount of the water inlet pipe section 12 is smaller than the water outlet amount of the connection pipe 22, so that even if the water inlet pipe section 12 continues to supply water after the water outlet is opened, the water under the piston plate 19 will be reduced. And then the compression spring 18 rebounds, the piston plate 19 descends, and drives the hemispherical stopper 17 to descend, and finally the water outlet is plugged again.

While as the water inlet pipe section 12 continues to supply water, the hemispherical stopper 17, the compression spring 18, the piston plate 19 and the extension spring 20 repeat the above operation. In this way, the flusher 6 is formed to provide intermittent water flow for the thrower 5, so that the working process of intermittent throwing is realized.

As shown in fig. 7, a suspended net cage 32 is installed in the sewage collecting tank 3, the net cage 32 is soaked in water in the sewage collecting tank 3, water outlet ends of all drain pipes 33 are located above the net cage 32, a fish screen is arranged in the net cage 32, and a drain pipe 31 is fixedly connected to the bottom of the sewage collecting tank 3.

The periphery of the dirt collecting tank 3 is provided with a fish hanging device extending to the upper part of the net cage 32.

As shown in fig. 8 and 9, the fish hanger includes a bracket, a hoist 34, and a fish basket 36. The fish basket 36 is hemispherical, the winch 34 is mounted on the support, a supporting rod 39 is fixedly connected inside the fish basket 36, a rotating wheel of the winch 34 is fixedly connected with the supporting rod 39 through a fish hanging wire 35, an eccentric block 37 is arranged on the fish hanging wire 35, an arc-shaped guide rod 38 is movably mounted inside the fish basket 36, and the eccentric block 37 and the arc-shaped guide rod 38 ensure that the fish basket 36 cannot be reversely buckled at the bottom when falling to the bottom. The eccentric block 37 is positioned at the center of the arc-shaped guide rod 38, the support rod 39 and the fish containing basket 36, and the bottom of the fish containing basket 36 is provided with a fish unloading structure. When the fish basket 39 reaches the bottom of the fish screen 36, the fish basket 39 is biased due to the arc-shaped guide rod 38 and the eccentric block 37, and the fish hanging wire 35 pulls the fish basket 39 to be aligned when the fish is caught, so that the fish is loaded in the fish basket.

The automatic inflow type fishing device is used for fishing, firstly draining and then draining fish is adopted, the upper insertion pipe of the net cage 32 is a net piece cover, the lower part of the net cage is a solid pipe, the height of the solid pipe is the water level of a reserved pool, and the ratio of the pool fish to water is 1 at the height: about 3. Fish flow to the dirt collecting tank 3 through the drain pipe 33, the net cage 32 is erected in the dirt collecting tank 3, the fish sieve is placed in the net cage 34, large fish remains in the fish sieve, and the sieved fish remains in the net cage 32. When in operation, the fish is screened and the fish in the fish screen is lifted out by the fish lifting device.

As shown in fig. 10, the fish unloading structure comprises a fish outlet, a fixing rod 44 is fixedly connected to the fish outlet, a rotating shaft 40 is hinged to one side of the fixing rod 44, a movable lock 42 is hinged to the other side of the fixing rod 44, the movable lock 42 can limit rotation of the rotating shaft 40, a reset spring 45 is fixedly connected to the movable lock 42, one end of the reset spring 45 is connected with the fixing rod 44, a pull rope 43 is fixedly connected to the bottom end of the movable lock 42, and a spherical net 41 is fixedly mounted at the bottom end of the rotating shaft 40. The spherical net 41 is controlled to be opened and closed through the movable lock 42 and the rotating shaft 40, a pull rope 43 on the movable lock 42 is pulled, the movable lock 42 is opened, the fish is disassembled, and after the fish is disassembled, a reset spring 45 is reset to fix the movable lock 42 and the rotating shaft 40.

The working principle of the utility model is as follows: when the fish in the flushing and throwing pool 1 needs to be fed, the first valve 13 and the second valve 23 are opened, and the feed is continuously added into the feed hopper 10 of the throwing device 5. The water flushing device 6 continuously flushes water to the flushing and throwing pool 1, and meanwhile, the water tank 11 intermittently sprays water to disperse the feed thrown by the thrower 5, so that artificial throwing is simulated, and the fish roof is used for feeding. At the same time, the fish moves in one direction and under the flushing of the flushing device 6, the particulate matters in the tank bottom and the tank water are deposited on the short inclined surface 9 of the tank bottom, so that the impurities in the tank water are conveniently discharged.

When the fish in the net cage 32 in the sewage collecting pool 3 needs to be caught, the winch 34 is started, the winch 34 slowly puts the fish basket 36 into the pool bottom through the fish hanging wire 35, after a period of time, the fish basket 36 is pulled up, and the fish screened by the fish screen is put into the fish basket 36. When unloading fish, the movable lock 42 is opened by pulling the pull rope 43 on the movable lock 42, the fish is unloaded, and finally the net cage 32 is lifted to further treat the fish in the net cage 32.

While only the preferred embodiments of the present utility model have been described above, it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these do not affect the effect of the implementation of the present utility model and the utility of the patent.

Claims (10)

1. The aquaculture system is characterized by comprising a plurality of flushing and throwing tanks (1) and a sewage collecting tank (3), wherein a flushing and throwing device (2) capable of intermittently throwing feed is arranged at the top end of one side of each flushing and throwing tank (1), the bottom of each flushing and throwing tank (1) is obliquely arranged, and the bottom end of the other side of each flushing and throwing tank (1) is communicated with the sewage collecting tank (3) through a drain pipe (33).

2. An aquaculture system according to claim 1, characterized in that the bottom surface inside the flushing and throwing tank (1) comprises a long inclined surface (7), an arc surface (8) and a short inclined surface (9), the long inclined surface (7) is arranged at one side of the bottom of the flushing and throwing tank (1) close to the flushing and throwing device (2), the long inclined surface (7), the arc surface (8) and the short inclined surface (9) are sequentially connected, and the drain pipe (33) is arranged below the short inclined surface (9).

3. An aquaculture system according to claim 1, characterized in that said flushing and throwing means (2) comprises a flusher (6) and a thrower (5); the material throwing device is characterized in that the material throwing device (5) comprises a feeding hopper (10), a discharging hopper (25) is fixedly connected to the bottom end of the feeding hopper (10), a material throwing pipe (29) communicated with the discharging hopper (25) is arranged below the discharging hopper (25), the water outlet end of the water flushing device (6) is communicated with the communicating part of the discharging hopper (25) and the material throwing pipe (29), and a double-control valve (24) is arranged among the feeding hopper (10), the discharging hopper (25) and the material throwing pipe (29).

4. An aquaculture system according to claim 3, characterized in that the double control valve (24) comprises a first sealing piece (26), a second sealing piece (28) and a movable connecting rod (27), wherein the first sealing piece (26) is hinged at the bottom end of the feed hopper (10), the second sealing piece (28) is hinged below the lower hopper (25), the movable connecting rod (27) is hinged between the first sealing piece (26) and the second sealing piece (28), and a lower folding section (30) is arranged at the end of the second sealing piece (28) away from the hinged end.

5. An aquaculture system according to claim 3, characterized in that a valve two (23) is provided in the feed hopper (10).

6. An aquaculture system according to claim 3, characterized in that the water flushing device (6) comprises a water pump (15) and a water tank (11), the water pump (15) is installed in a water source, a water outlet pipe (14) is fixedly connected to a water outlet end of the water pump (15), the water outlet pipe (14) extends into the flushing and throwing tank (1), a valve I (13) is arranged on the water outlet pipe (14), and the water outlet pipe (14) is communicated with a water inlet below the water tank (11) through a water inlet pipe section;

piston board (19) is movably installed in water tank (11), install compression spring (18) between piston board (19) and water tank (11) top inner wall, the below of piston board (19) is fixed to be equipped with hemisphere stopper and is acted as go-between (21), the below fixed mounting of hemisphere stopper is acted as go-between (21) has hemisphere stopper (17), hemisphere stopper is acted as go-between (21) overcoat and is equipped with extension spring (20), the top fixedly connected with pressure regulating pipe (16) of water tank (11), water tank (11) bottom fixedly connected with connecting pipe (22), hemisphere stopper (17) are located connecting pipe (22) orificial directly over, just hemisphere stopper (17) can form the shutoff to connecting pipe (22), water tank (11) are linked together with the intercommunication department of unloading hopper (25) and throwing pipe (29).

7. An aquaculture system according to claim 1, characterized in that a suspended net cage (32) is installed in the sewage collecting tank (3), the net cage (32) is soaked in water in the sewage collecting tank (3), water outlet ends of all the water draining pipes (33) are located above the net cage (32), and a sewage draining pipe (31) is fixedly connected to the bottom of the sewage collecting tank (3).

8. An aquaculture system according to claim 7, characterized in that the periphery of the tank (3) is fitted with fish hangers extending above the net cage (32).

9. An aquaculture system according to claim 8, characterized in that the fish hanger comprises a frame, a hoist (34) and a fish basket (36); the fish basket is characterized in that the winch (34) is mounted on the support, a supporting rod (39) is fixedly connected to the inside of the fish basket (36), a rotating wheel of the winch (34) is fixedly connected with the supporting rod (39) through a fish hanging pull wire (35), an eccentric block (37) is arranged on the fish hanging pull wire (35), an arc-shaped guide rod (38) is movably mounted in the fish basket (36), the eccentric block (37) is located at the arc-shaped guide rod (38), the supporting rod (39) and the center of the fish basket (36), and a fish unloading structure is arranged at the bottom of the fish basket (36).

10. An aquaculture system according to claim 9, characterized in that the fish unloading structure comprises a fish outlet, a fixed rod (44) is fixedly connected to the fish outlet, a rotating shaft (40) is hinged to one end of the fixed rod (44), a movable lock (42) is hinged to the other end of the fixed rod (44), the movable lock (42) can limit rotation of the rotating shaft (40), a return spring (45) is fixedly connected to the movable lock (42), one end of the return spring (45) is connected with the fixed rod (44), a pull rope (43) is fixedly connected to the bottom end of the movable lock (42), and a spherical net (41) is fixedly mounted to the bottom end of the rotating shaft (40).