Sealed fish culture system

Abstract

The utility model is applicable to the technical field of fish tanks, and provides a sealed fish culture system which comprises a sealed tank body, a filtering oxygenation device and an automatic feeding device, the tank body is provided with a water outlet and a water inlet, the filtering oxygenation device is provided with a centrifugal pump, a first connecting assembly, a four-way connector, a filtering assembly and an oxygenation assembly, and the centrifugal pump is connected with the first connecting assembly. The four-way connector is provided with three connecting ports, one connecting port of the four-way connector is connected with the first connecting assembly, one connecting port of the four-way assembly is connected with the oxygenation assembly, the other connecting port of the four-way connector is connected with one end of the filtering assembly, and the other end of the filtering assembly is connected with the water inlet; or the filtering oxygenation device is provided with a vacuum water pump, a filtering oxygenation assembly and a second connecting assembly, one end of the vacuum water pump is connected with the water inlet, the other end of the vacuum water pump is connected with the filtering oxygenation assembly, and the second connecting assembly is connected with the water outlet. Therefore, automatic filtering, feeding, ventilating and heating are achieved, and pollution discharge, water change and fish change are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fish tanks, in particular to a sealed fish farming system. Background Art

[0002] Ornamental fish farming is now open-air farming. When people buy ornamental fish, they need to purchase the fish tank and the fish separately. The water can easily overflow. In addition, the transportation, breeding and water changes of ornamental fish are very inconvenient. The mortality rate of individual breeding is high, and it is not easy to promote.

[0003] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0004] In view of the above-mentioned defects, the purpose of the utility model is to provide a sealed fish farming system, which can realize automatic filtering, feeding, ventilation and heating, and is convenient for sewage discharge, water change and fish change.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a sealed fish farming system, comprising a sealed cylinder body, the cylinder body is provided with a water outlet and a water inlet, comprising a filtering and oxygenating device and an automatic feeding device, the filtering and oxygenating device is provided with a centrifugal pump, a first connecting component, a four-way connector, a filtering component and an oxygenating component, the water outlet is connected to the centrifugal pump, the centrifugal pump is connected to one end of the first connecting component, the four-way connector is provided with a first connecting port, a second connecting port and a third connecting port, the first connecting port of the four-way connector is connected to the first connecting component, the third connecting port of the four-way connector is connected to the oxygenating component, the second connecting port of the four-way connector is connected to one end of the filtering component, one end of the oxygenating component is plugged into the cylinder body, and the other end of the filtering component is connected to the water inlet of the cylinder body; or

[0006] The filtering and oxygenating device is provided with a vacuum water pump, a filtering and oxygenating component and a second connecting component. The vacuum water pump is arranged outside the cylinder body, one end of the vacuum water pump is connected to the water inlet of the cylinder body, and the other end of the vacuum water pump is connected to the filtering and oxygenating component. The second connecting component is respectively connected to the filtering and oxygenating component and the water outlet of the cylinder body.

[0007] According to the sealed fish farming system described in the utility model, the automatic feeding device is provided with a feeding box, a sealing plug assembly and a feeding control assembly. The upper end of the feeding box is provided with a feeding port and a feeding cover. The feeding box is also provided with a feeding hole. The cylinder body is provided with a feeding hole. The feeding hole is provided on the side of the sealing plug assembly and matches the sealing plug assembly. The feeding hole is provided at the lower end of the sealing plug assembly. The feeding control assembly passes through the sealing plug assembly and the feeding hole and is plugged into the feeding box.

[0008] According to the sealed fish farming system described in the utility model, it also includes an internal and external air pressure self-balancing device, and the internal and external air pressure self-balancing device includes a float, a first hose and a third connecting component. The cylinder body is provided with an external air hole connected to the third connecting component, one end of the first hose is connected to the third connecting component and communicated with the external air hole, and the other end of the first hose passes through the float and has an internal air hole.

[0009] According to the sealed fish farming system described in the utility model, it also includes an automatic heating device, which includes a heating film or a heating rod. The heating rod is arranged in the cylinder body, and the heating rod is connected to a heating rod wire. The heating rod wire seals and passes through the cylinder body. The heating film is arranged on the cylinder wall or the bottom of the cylinder body.

[0010] According to the sealed fish farming system described in the utility model, it also includes an auxiliary oxygenation device, which includes an oxygenation pump, an oxygenation pipeline, an oxygenation cylinder connecting pipe, an oxygenation connecting pipe and an air dispersion stone. One end of the oxygenation pipeline is connected to the oxygenation pump, and the other end of the oxygenation pipeline is connected to the oxygenation cylinder connecting pipe. The oxygenation cylinder connecting pipe passes through the cylinder and is connected to the oxygenation connecting pipe. The other end of the oxygenation connecting pipe is connected to the air dispersion stone.

[0011] According to the sealed fish farming system of the utility model, the filter assembly includes a first connecting pipe, a first sealed filter tank and a second connecting pipe, one end of the first connecting pipe is connected to the four-way connector, the other end of the first connecting pipe is connected to the first sealed filter tank, the first sealed filter tank is provided with a first sealed filter tank water outlet, one end of the second connecting pipe is connected to the first sealed filter tank water outlet, and the other end of the second connecting pipe is connected to the water inlet of the cylinder body; or

[0012] The filtering and oxygenating assembly comprises a third connecting pipe and a second sealed filtering tank, one end of the third connecting pipe is connected to the vacuum water pump, and the other end of the third connecting pipe is connected to the second sealed filtering tank.

[0013] According to the sealed fish farming system of the utility model, the first sealed filter tank is provided with a first filter chamber and a first sewage chamber, the first filter chamber is provided at the upper end of the first sewage chamber, and a first sewage chamber partition is provided between the first filter chamber and the first sewage chamber; or

[0014] The second sealed filter tank is provided with an air intake port, the air intake port is connected to a second one-way valve, the second sealed filter tank is also provided with a second filter and a second sewage chamber, the second filter chamber is provided at the upper end of the second sewage chamber, and a second sewage chamber partition is provided between the second filter chamber and the second sewage chamber.

[0015] According to the sealed fish farming system described in the utility model, the sealing plug assembly includes a feeding hole sealing plug, a feeding hole holding spring and a sealing movable push rod, a sealing plug control hole is provided below the feeding hole sealing plug, the feeding hole holding spring and the sealing movable push rod are respectively arranged in the sealing plug control hole, and the sealing movable push rod is arranged below the feeding hole holding spring.

[0016] According to the sealed fish farming system described in the utility model, the feeding control component includes a moving rod, a feeding control pad, a moving rod spring and an electromagnetic coil, one end of the moving rod passes through the sealing component and the feeding hole and is inserted into the feeding box, the end of the moving rod inserted into the feeding box is sleeved with the feeding control pad, the other end of the moving rod is sleeved with the moving rod spring, and the electromagnetic coil is provided on the side of the moving rod on which the moving rod spring is sleeved.

[0017] According to the sealed fish farming system of the utility model, the third connecting assembly includes a connecting piece sealedly connected to the outer air vent and a connecting joint sealedly connected between the connecting piece and the first hose.

[0018] The utility model provides a sealed fish farming system, including a sealed cylinder body, wherein the cylinder body is provided with a water outlet and a water inlet, and includes a filtering and oxygenating device and an automatic feeding device, wherein the filtering and oxygenating device is provided with a centrifugal pump, a first connecting component, a four-way connector, a filtering component and an oxygenating component, wherein the centrifugal pump is connected to the first connecting component, and the water in the cylinder body is pumped out to the first connecting component through the water outlet, and the three connecting ports of the four-way connector are respectively connected to the first connecting component, the oxygenating component and the filtering component, and the water is divided into two parts in the four-way connector, and one part of the water is connected to the filtering component to realize After filtering and purifying, the water flows back to the cylinder from the water inlet, and a part of the water flows back to the cylinder after being oxygenated by the oxygenation component; the filtering and oxygenation device can also be provided with a vacuum water pump, a filtering and oxygenation component and a second connecting component, the vacuum water pump is arranged outside the cylinder, one end of the vacuum water pump is connected to the water inlet, the other end of the vacuum water pump is connected to the filtering and oxygenation component, the second connecting component is connected to the water outlet, the suction of the vacuum water pump causes the water to flow from the water outlet through the second connecting component to the filtering and oxygenation component for filtration, purification and oxygenation, and the filtered and oxygenated water is pumped to the water inlet by the vacuum water pump and re-injected into the cylinder. Preferably, the internal and external air pressure self-balancing device on the cylinder performs ventilation inside and outside the cylinder, and the automatic heating device on the cylinder effectively heats the cylinder. By this, the sealed fish farming system of the utility model realizes automatic filtering, feeding, ventilation and heating, and is convenient for sewage discharge, water change and fish change. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the cylinder structure of the sealed fish farming system of the utility model;

[0020] Figure 2It is a schematic diagram of various structural forms of the sealed connection of the cylinder body of the sealed fish farming system of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a first embodiment of a filtering and oxygenating device of a sealed fish farming system of the utility model including a centrifugal pump;

[0022] Figure 4 It is a structural schematic diagram of a second embodiment of the filtering and oxygenating device of the sealed fish farming system of the utility model including a centrifugal pump;

[0023] Figure 5 It is a structural schematic diagram of the filtering and oxygenating device of the sealed fish farming system of the utility model including a vacuum water pump;

[0024] Figure 6 It is a structural schematic diagram of a first embodiment of an automatic feeding device of a sealed fish farming system of the utility model;

[0025] Figure 7 It is a structural schematic diagram of a second embodiment of the automatic feeding device of the sealed fish farming system of the utility model;

[0026] Figure 8 It is a structural schematic diagram of a third embodiment of the automatic feeding device of the sealed fish farming system of the utility model;

[0027] Fig. 9 It is a structural schematic diagram of the first embodiment of the internal and external air pressure self-balancing device of the sealed fish farming system of the utility model;

[0028] Fig.10 It is a structural schematic diagram of a second embodiment of the internal and external air pressure self-balancing device of the sealed fish farming system of the utility model;

[0029] Fig.11 It is a structural schematic diagram of a third embodiment of the internal and external air pressure self-balancing device of the sealed fish farming system of the utility model;

[0030] Fig.12 The utility model is a schematic diagram of the structure of an auxiliary oxygenation device and an automatic heating device of a sealed fish culture system. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] Reference Figures 1-2As shown, the utility model provides a sealed fish farming system 100, including a sealed cylinder 1, the cylinder 1 is sealed, and the shape of the cylinder 1 can be changed according to needs. A water changing port 11 that can be covered and sealed is provided on the top of the cylinder 1 to realize fish loading and large-scale water replacement. The water changing port 11 is sealed and tightly covered during normal fish farming or transportation. When all water needs to be replaced or fish need to be replaced, the water changing port 11 is opened, and a water changing port sealing cover 111 is provided above the water changing port 11. The water changing port 11 and the water changing port sealing cover 111 are threadedly connected, and there is a The water exchange port sealing gasket 112, the cylinder body 1 is provided with a water outlet 12 and a water inlet 13, the cylinder body 1 also includes a filtering and oxygenating device and an automatic feeding device 4, the place where the cylinder body 1 is connected with each device is provided with an opening hole and a connector convenient for sealing connection according to the manufacturing process and the needs of the overall layout, and the connection between each device and the cylinder body 1 is sealed. When the cylinder body 1 is connected with a hose, the cylinder body 1 is designed with an integrally connected pipe joint, and the cylinder body 1 uses a pipe joint that can be directly connected to the hose. The hose and the pipe joint fit tightly without water leakage, and the hose buckle is pressed to prevent the hose from aging and falling off. Figure 2 In the figure, the connection between the cylinder body 1 and each device is provided with a variety of structures, the cylinder body 1 is provided with an external convex pipe joint 14 or an external reducer external convex pipe joint 15 or a screw compression sealing ring 16 or a two-way joint 19, the hose and the external convex pipe joint 14 or the external reducer external convex pipe joint 15 or the screw compression sealing ring 16 or the two-way joint 19 are tightly matched, at this time the hose does not need to be compressed with a buckle, a screw compression sealing ring sealing gasket 161, a screw compression sealing ring compression screw 162 and a screw compression sealing ring compression nut 163 are provided between the cylinder body 1 and the screw compression sealing ring 16, and a two-way joint sealing ring is provided between the cylinder body 1 and the two-way joint.

[0033] Reference Figure 3The utility model is a first embodiment of a filtering and oxygenating device including a centrifugal pump, wherein the filtering and oxygenating device is provided with a centrifugal pump, a first connecting component 22, a four-way connector 23, a filtering component 24 and an oxygenating component 25, wherein the centrifugal pump is arranged inside the cylinder body 1, the water outlet 12 is connected to the centrifugal pump, the centrifugal pump is connected to one end of the first connecting component 22, the first connecting component 22 is a first water outlet connecting pipe 22, the four-way connector 23 is provided with a first connecting port 231, a second connecting port 232 and a third connecting port 233, the first connecting port 231 of the four-way connector 23 is connected to the first connecting component 22, the third connecting port 233 of the four-way connector 23 is connected to the oxygenating component 25, the second connecting port 232 of the four-way connector 23 is connected to one end of the filtering component 24 One end of the oxygenation assembly 25 is plugged into the cylinder body 1, and the other end of the filter assembly 24 is connected to the water inlet 13 of the cylinder body 1. The centrifugal pump of this embodiment is a submersible pump 21; specifically, the submersible pump 21 is arranged inside the cylinder body 1. After the submersible pump 21 is connected to the water outlet 12, the submersible pump 21 is connected to the first water outlet connecting pipe 22. The submersible pump 21 generates pressure by the rotation of the impeller to pump the water in the cylinder body 1 out of the cylinder body 1 through the water outlet 12. The water enters the four-way connector 23 through the first water outlet connecting pipe 22. The water is divided into two parts in the four-way connector 23. One part of the water enters the filter assembly 24 through the second connection port 232 of the four-way connector 23. The filter assembly 24 includes a first connecting pipe 241, a first sealed filter tank 242 and a second The water entering the filter assembly 24 first passes through the first connecting pipe 241 and is then pressed into the first sealed filter tank 242 through the first sealed filter tank water inlet 2427 of the first sealed filter tank 242 for filtration and purification. The filtered water then passes through the first sealed filter tank water outlet 2421 of the first sealed filter tank 242 and enters the second connecting pipe 243. The water in the second connecting pipe 243 flows back into the cylinder body 1 through the water inlet 13 of the cylinder body 1. The first sealed filter tank 242 is provided with a first filter chamber 2422 and a first sewage chamber 2423. The first filter chamber 2422 is provided at the upper end of the first sewage chamber 2423. A first sewage chamber partition 2424 is provided between the first filter chamber 2422 and the first sewage chamber 2423. The biochemical filter cotton in the cavity 2422 filters the water in the first filter cavity 2422. The water is filtered out of residues under the filtration of the biochemical filter cotton, and the residues fall into the first sewage cavity 2423. After the residues in the first sewage cavity 2423 accumulate for a period of time, the first sewage valve 2425 of the first sewage cavity 2423 is opened, and the residues are discharged from the first sewage cavity 2423 through the first sewage pipe 2426 of the first sewage cavity 2423, thereby filtering the water in the cylinder body 1; another part of the water enters the oxygenation component 25 through the third connection port 233 of the four-way connector 23. The oxygenation component 25 is provided with a four-way connector water outlet channel 251, a first air inlet channel 252 and a first non-return valve 253. The first air inlet channel 252 is provided on the side of the four-way connector water outlet channel 251.A first air inlet protrusion 2521 is provided at the connection between the first air inlet channel 252 and the water outlet channel 251 of the four-way connector. The diameter of the water outlet channel 251 of the four-way connector becomes smaller at the first air inlet channel protrusion 2521. The outer end of the first air inlet channel 252 is connected to the first one-way valve 253. The diameter of the first air inlet channel 252 is one-third of the diameter of the water outlet channel 251 of the four-way connector. The first one-way valve 253 can only suck in the water outlet channel 251 of the four-way connector in one direction, but cannot flow out any medium, thereby preventing the water in the cylinder body 1 from passing through the water outlet channel of the four-way connector when the submersible pump 21 is not working. The first connection port 231 of the four-way connector 23 has the largest diameter, the second connection port 232 of the four-way connector 23 has a diameter of two-thirds of the first connection port 231 of the four-way connector 23, and the third connection port 233 of the four-way connector 23 has a diameter of one-fifth of the first connection port 231 of the four-way connector 23. Of course, the ratio of the diameters of the four-way connector 23, the four-way connector water outlet channel 251, and the first air inlet channel 252 is not fixed, so as to achieve the predetermined effect. The first connection port 231, the second connection port 232 of the four-way connector 23 has a diameter of two-thirds of the first connection port 231 of the four-way connector 23, and the third connection port 233 of the four-way connector has a diameter of one-fifth of the first connection port 231 of the four-way connector 23. The diameter between the third connection port 233 and the diameter setting of the four-way connector water outlet channel 251 enables most of the water to flow into the first sealed filter tank 242 to achieve water cleaning filtration, while increasing the flow rate of the water in the four-way connector water outlet channel 251. The diameter of the four-way connector water outlet channel 251 is small. After passing through the four-way connector water outlet channel 251, the water does not pass through the first sealed filter tank 242 but directly flows into the cylinder body 1, with small resistance and fast water flow speed. The water outlet position of the four-way connector water outlet channel 251 should be set at a position more than 3 cm below the water surface of the cylinder body 1, which can further reduce the water flow of the four-way connector. The resistance of water outlet of the joint water outlet channel 251, the diameter of the four-way connector water outlet channel 251 at the first air inlet channel protrusion 2521 becomes smaller, the water in the four-way connector water outlet channel 251 flows faster when passing through the first air inlet channel protrusion 2521, and the water flowing in the four-way connector water outlet channel 251 generates negative pressure in the first air inlet channel 252, so that the air enters the four-way connector water outlet channel 251 through the first one-way valve 253 and the first air inlet channel 252 and mixes with the water. After the water and air are mixed, they enter the cylinder body 1 from the four-way connector water outlet channel 251, thereby achieving oxygenation. According to the size of the tank 1 and the number of fish, the working of the submersible pump 21 can be controlled by a specially designed time control software, so that the fish farmer can adjust the working time of the submersible pump 21 by himself. For example, the control software can set the submersible pump 21 to automatically work for 10 minutes or 20 minutes every hour. The working time of the submersible pump 21 can be set by adjusting the knob, based on the standard that the fish in the tank 1 do not float, there is no hypoxia, and there is no fish feces residue in the water of the tank 1, which is relatively clean. Extend the use time of the submersible pump 21 and save electricity.

[0034] Reference Figure 4The utility model is a second embodiment of a filtering and oxygenating device including a centrifugal pump. Different from the first embodiment, the centrifugal pump of the present embodiment is a water pump 26. The filtering and oxygenating device is provided with a centrifugal pump, a first connecting assembly 22, a four-way connector 23, a filtering assembly 24 and an oxygenating assembly 25. The centrifugal pump is arranged outside the cylinder body 1 and is lower than the water level in the cylinder body 1. The water outlet 12 is connected to the centrifugal pump. The centrifugal pump is connected to one end of the first connecting assembly 22. The first connecting assembly 22 is a first water outlet connecting pipe 22. The four-way connector 23 is provided with a first connecting port 231, a second connecting port 232 and a third connecting port 233. The first connecting port 231 of the four-way connector 23 is connected to the first connecting assembly 22. The third connecting port 232 of the four-way connector 23 is connected to the first connecting assembly 22. 33 is connected to the oxygenation component 25, the second connection port 232 of the four-way connector 23 is connected to one end of the filter component 24, one end of the oxygenation component 25 is inserted into the cylinder body 1, and the other end of the filter component 24 is connected to the water inlet 13 of the cylinder body 1. The centrifugal pump of this embodiment is a water pump 26; specifically, the water pump 26 is arranged outside the cylinder body 1 below the water level in the cylinder body 1, and a second water outlet connecting pipe 27 is connected between the water pump 26 and the water outlet 12, and the other end of the water pump 26 is connected to the first water outlet connecting pipe 22. The water pump 26 generates pressure by rotating the impeller to pump the water in the cylinder body 1 out of the cylinder body 1 through the water outlet 12. After passing through the water pump 26, the water enters the four-way connector 23 through the first water outlet connecting pipe 22, and the water in the four-way connector 23 It is divided into two parts, one part of the water enters the filter assembly 24 through the second connection port 232 of the four-way connector 23, and the filter assembly 24 includes a first connection pipe 241, a first sealed filter tank 242 and a second connection pipe 243. The water entering the filter assembly 24 first passes through the first connection pipe 241 and is pressed into the first sealed filter tank 242 from the first sealed filter tank water inlet 2427 of the first sealed filter tank 242 for filtration and purification. The filtered water then enters the second connection pipe 243 through the first sealed filter tank water outlet 2421 of the first sealed filter tank 242. The water in the second connection pipe 243 flows back into the cylinder body 1 through the water inlet 13 of the cylinder body 1. The first sealed filter tank 242 is provided with a first filter chamber 2422 and a first sewage chamber 2427. 423, the first filter chamber 2422 is arranged at the upper end of the first sewage chamber 2423, and a first sewage chamber partition 2424 is arranged between the first filter chamber 2422 and the first sewage chamber 2423. The biochemical filter cotton in the first filter chamber 2422 filters the water in the first filter chamber 2422, and the water is filtered out of the residue under the filtration of the biochemical filter cotton, and the residue falls into the first sewage chamber 2423. After the residue in the first sewage chamber 2423 accumulates for a period of time, the first sewage valve 2425 of the first sewage chamber 2423 is opened, and the residue is discharged from the first sewage chamber 2423 through the first sewage pipe 2426 of the first sewage chamber 2423, so as to filter the water in the cylinder body 1; another part of the water enters the oxygenation component 25 through the third connection port 233 of the four-way connector 23,The oxygenation assembly 25 is provided with a four-way connector water outlet channel 251, a first air inlet channel 252 and a first one-way valve 253. The first air inlet channel 252 is provided on the side of the four-way connector water outlet channel 251. A first air inlet channel protrusion 2521 is provided at the connection between the first air inlet channel 252 and the inner part of the four-way connector water outlet channel 251. The diameter of the four-way connector water outlet channel 251 at the first air inlet channel protrusion 2521 becomes smaller. The outer end of the first air inlet channel 252 is connected to the first one-way valve 253. The diameter of the first air inlet channel 252 is one-third of the diameter of the four-way connector water outlet channel 251. The first one-way valve 253 can only be connected to the four-way connector in one direction. The water in the cylinder 1 is sucked into the water outlet channel 251 of the four-way connector, but no medium can flow out, thereby preventing the water in the cylinder 1 from flowing out through the water outlet channel 251 of the four-way connector when the water pump 26 is not working. The first connection port 231 of the four-way connector 23 has the largest diameter, the second connection port 232 of the four-way connector 23 has a diameter of two-thirds of the diameter of the first connection port 231 of the four-way connector 23, and the third connection port 233 of the four-way connector 23 has a diameter of one-fifth of the diameter of the first connection port 231 of the four-way connector 23. Of course, the ratio of the diameters of the four-way connector 23, the water outlet channel 251 of the four-way connector and the first air inlet channel 252 is not fixed, so as to achieve The predetermined effect is achieved. The diameters of the first connection port 231, the second connection port 232 and the third connection port 233 of the four-way connector 23 and the diameter of the four-way connector water outlet channel 251 are set to enable most of the water to flow into the first sealed filter tank 242 to achieve water cleaning filtration, while increasing the flow rate of the water in the four-way connector water outlet channel 251. The diameter of the four-way connector water outlet channel 251 is small. After passing through the four-way connector water outlet channel 251, the water does not pass through the first sealed filter tank 242 but directly flows into the cylinder body 1, with small resistance and fast water flow speed. The water outlet position of the four-way connector water outlet channel 251 should be set 3 meters below the water surface of the cylinder body 1. cm or more, the resistance of water outlet of the four-way connector water outlet channel 251 is greatly reduced, the diameter of the four-way connector water outlet channel 251 at the first air inlet channel protrusion 2521 becomes smaller, the water in the four-way connector water outlet channel 251 flows faster when passing through the first air inlet channel protrusion 2521, and the water flowing in the four-way connector water outlet channel 251 generates negative pressure in the first air inlet channel 252, so that air passes through the first one-way valve 253 and the first air inlet channel 252 and enters the four-way connector water outlet channel 251 to mix with water. After the water and air are mixed, they enter the cylinder body 1 from the four-way connector water outlet channel 251, thereby achieving oxygenation. According to the size of the tank 1 and the number of fish, the operation of the water pump 26 can be controlled by a specially designed time control software, so that the fish farmer can adjust the working time of the water pump 26 by himself. For example, the control software can set the water pump 26 to automatically work for 10 minutes or 20 minutes every hour, etc., with the standard that the fish in the tank 1 do not float, there is no lack of oxygen, and the water in the tank 1 is clean without fish feces residue. By adjusting the knob,The working time of the water pump 26 can be set. The use time of the water pump 26 can be extended to save electricity.

[0035] Reference Figure 5In another embodiment of the utility model, the filtering and oxygenating device is provided with a vacuum water pump 31, a filtering and oxygenating component 32 and a second connecting component 33. The vacuum water pump 31 is arranged outside the cylinder body 1. The vacuum water pump 31 is a diaphragm pump 31. The vacuum water pump 31 can be arranged at any position outside the cylinder body 1. One end of the vacuum water pump 31 is connected to the water inlet 13 of the cylinder body 1, and the other end of the vacuum water pump 31 is connected to the filtering and oxygenating component 32. The second connecting component 33 is respectively connected to the filtering and oxygenating component 32 and the water outlet 12 of the cylinder body 1. The second connecting component 33 is a second water outlet connecting pipe 33. The filter oxygenation assembly 32 includes a third connecting pipe 321 and a second sealed filter tank 322. Specifically, when the vacuum water pump 31 is powered on, a vacuum suction force is generated at the vacuum water pump water inlet 311 of the vacuum water pump 31. Since the entire filter oxygenation device is in a sealed state, the suction force enters the second sealed filter tank 322 through the third connecting pipe 321, and an internal suction force is generated in the second sealed filter tank 322. The suction force in the second sealed filter tank 322 sucks other media at two places. The second sealed filter tank 322 is provided with an air suction hole 3221, and the outer end of the air suction hole 3221 is connected to a second one-way valve 330. 222, a suction force in the second sealed filter tank 322 passes through the second one-way valve 3222 from the suction hole 3221 of the second sealed filter tank 322 to suck air into the second sealed filter tank 322. Since the second one-way valve 3222 can only suck air into the second sealed filter tank 322 in one direction, when the vacuum water pump 31 is not working, there is no internal suction force in the second sealed filter tank 322, and the second one-way valve 3222 will prevent water from flowing out of the second sealed filter tank 322; another suction force in the second sealed filter tank 322 passes through the second water outlet connecting pipe 33 from the water outlet 1 of the cylinder body 1. 2, the water in the cylinder body 1 is sucked into the second sealed filter tank 322, so that the water and air are fully mixed in the second sealed filter tank 322, the dissolved oxygen content in the water is increased, and oxygenation is achieved. The air suction hole 3221 in the second sealed filter tank 322 is more than 250 times smaller than the water inlet hole of the second sealed filter tank 322. An adjustable switch can be set behind the rear end of the second one-way valve 3222 to adjust the air intake amount of the air suction hole 3221 of the second sealed filter tank 322, and the water in the second sealed filter tank 322 is mainly water, so as to filter and purify the water in the cylinder body 1.The second sealed filter tank 322 is also provided with a second filter chamber 3223 and a second sewage chamber 3224. The second filter chamber 3223 is provided at the upper end of the second sewage chamber 3224. A second sewage chamber partition 3225 is provided between the second filter chamber 3223 and the second sewage chamber 3224. The second filter chamber 3223 is provided with biochemical filter cotton, activated carbon, biochemical ceramic ring and other filtering materials to filter and purify the water in the second filter chamber 3223. The residue of the water in the second filter chamber 3223 filtered by the biochemical filter cotton falls into the second sewage chamber 3224. After accumulating for a period of time, the second sewage valve 3226 of the second sewage chamber 3224 is opened, and the residue is discharged from the second sewage chamber 3224 through the second sewage pipe 3227 of the second sewage chamber 3224, so as to filter the water in the cylinder body 1. The second filter chamber 3223 and the second sewage chamber 3224 are separated by the second sewage chamber partition. 3225 is separated, and after the water and air are mixed in the second sealed filter tank 322, the vacuum water pump 31 pumps the cleaned, filtered, and water-gas mixed water to the vacuum water pump outlet 312 of the vacuum water pump 31, and the water enters the water inlet 13 of the cylinder 1 through the fourth connecting pipe 323 set between the vacuum water pump 31 and the cylinder 1 and is re-injected into the cylinder 1, so as to realize the cycle process of water cleaning, filtration, and oxygenation in the cylinder 1. According to the size of the cylinder 1 and the number of fish raised, the fish farmer can adjust the working time of the vacuum water pump 31 by himself through the specially designed time control software. For example, the control software can be set to work for 10 minutes or 20 minutes every hour, with the standard that the fish in the cylinder 1 do not float and there is no hypoxia, and the water in the cylinder 1 does not have fish feces residue and is relatively clean. By adjusting the knob, the automatic working time of the vacuum water pump 31 can be set. Extend the use time of the vacuum water pump 31 and save electricity.

[0036] Preferably, the automatic feeding device 4 is provided with a feeding box 41, a sealing plug assembly 42 and a feeding control assembly 43. A feeding port 411 and a feeding cover 412 are provided at the upper end of the feeding box 41. The feeding box 41 is also provided with a feeding hole 413. The cylinder body 1 is provided with a feeding hole 17. The feeding hole 413 is provided on the side of the sealing plug assembly 42 and matches the sealing plug assembly 42. The feeding hole 17 is provided at the lower end of the sealing plug assembly 42. The feeding control assembly 43 passes through the sealing plug assembly 42 and the feeding hole 413 and is plugged into the feeding box 41. The automatic feeding device 4 is arranged above the cylinder body 1. When the entire sealed cylinder body 1 is inverted during transportation, the control program controls the feeding action to be temporarily stopped. The sealing plug assembly 42 includes a feeding hole sealing plug 421, a feeding hole pressing spring 422 and a sealing movable push rod 423. A sealing plug control hole 4211 is arranged below the feeding hole sealing plug 421. The feeding hole pressing spring 422 and the sealing movable push rod 423 are respectively arranged in the sealing plug control hole 4211. The sealing movable push rod 423 is The feeding hole 17 is provided with a feeding seal ring 171 between the sealing movable top rod 423 and the feeding hole 17, so that the feeding hole 17 is sealed and impermeable to water vapor. The feeding control assembly 43 includes a moving rod 431, a feeding control pad 432, and a moving rod 433. The movable rod spring 433 and the electromagnetic coil 434, one end of the movable rod 431 passes through the sealing assembly and the feeding hole 413 and is inserted into the feeding box 41, the end of the movable rod 431 inserted into the feeding box 41 is sleeved with a feeding control pad 432, the other end of the movable rod 431 is sleeved with a movable rod spring 433, and the side of the movable rod 431 sleeved with the movable rod spring 433 is provided with an electromagnetic coil 434, the feeding control pad 432 is made of silicone, and the feeding control pad 432 and the sealing plug assembly 42 A feeding cavity 414 is formed therebetween, and the position of the feeding control pad 432 on the moving rod 431 is adjusted to control the size of the feeding cavity 414 and the feeding amount. A feeding box sealing pad 415 is provided at the connection between the moving rod 431 and the feeding box 41. The feeding box sealing pad 415 prevents fish food from spilling out of the feeding box 41, and the feeding box sealing pad 415 does not affect the left and right movement of the moving rod 431. When the automatic feeding device 4 is not used, manual feeding can also be performed through the water exchange port 11 of the cylinder body 1.

[0037] Figure 6The sealed fish farming system 100 provided by the first embodiment of the utility model with an automatic feeding device 4 is shown. The automatic feeding device 4 is provided with a feeding box 41, a sealing plug assembly 42 and a feeding control assembly 43. A feeding port 411 and a feeding cover 412 are provided at the upper end of the feeding box 41. The feeding box 41 is also provided with a feeding hole 413. The cylinder body 1 is provided with a feeding hole 17. The feeding hole 413 is provided on the side of the sealing plug assembly 42 and matches the sealing plug assembly 42. The feeding hole 17 is provided at the lower end of the sealing plug assembly 42. The feeding control assembly 43 passes through the sealing plug assembly 42 and the feeding hole 413 and is plugged into the feeding box 41.The sealing plug assembly 42 includes a feeding hole sealing plug 421, a feeding hole pressing spring 422 and a sealing movable push rod 423. A sealing plug control hole 4211 is provided below the feeding hole sealing plug 421. The feeding hole pressing spring 422 and the sealing movable push rod 423 are respectively arranged in the sealing plug control hole 4211. The sealing movable push rod 423 is arranged below the feeding hole pressing spring 422. The feeding control assembly 43 includes a moving rod 431, a feeding control pad 432, a moving rod spring 433 and an electromagnetic coil 434. The lower part of the sealing movable push rod 423 is a spherical smooth hard ball 424. When not feeding, a part of the lower ball 424 of the sealing movable push rod 423 is clamped in the feeding hole 17, and the ball 424 plays a sealing role. The function of the plug is to seal the feeding hole 17. When there is no feeding action, the sealing movable push rod 423, under the action of the feeding hole pressing spring 422, presses the feeding hole 17 through the ball 424 below the sealing movable push rod 423. The specific action is to open the feeding cover 412 and add fish food into the feeding box 41 from the feeding hole. When there is no feeding, the spring force of the moving rod spring 433 presses the feeding hole sealing plug 421 to seal the feeding hole 413, and the fish food will not leak out. At the same time, the feeding hole pressing spring 422 presses the feeding hole 17 and the feeding sealing ring 171 through the ball 424 below the sealing movable push rod 423, so that the feeding hole 17 is impermeable to water and air. When the scheduled feeding time is up, the control system 100 makes the electromagnetic coil 434 When the power is turned on, the moving rod 431 moves to the left under the action of the magnetic force, compressing the moving rod spring 433, and the entire moving rod 431 moves to the left, driving the feeding hole sealing plug 421 to move to the left, opening the feeding hole 413 of the feeding box 41, and at the same time, the feeding hole sealing plug 421 moves to the left under the action of the moving rod 431, driving the feeding hole pressing spring 422 and the sealing movable push rod 423 installed on the feeding hole sealing plug 421 to move to the left at the same time, the sealing movable push rod 423 is pushed to the left, and the ball 424 under the sealing movable push rod 423 is subjected to the upward force on the left side of the feeding sealing ring 171, and the feeding hole pressing spring 422 is compressed by the sealing movable push rod 423, and the ball 424 under the sealing movable push rod 423 moves upward The feeding hole 17 is moved out, and at the same time, as the sealing plug 421 of the feeding hole moves to the left as a whole, the feeding hole 413 of the feeding box 41 is opened. At this time, the feeding cavity 414 moves to the left. After the fish food passes through the feeding hole 413 of the feeding box 41, the fish food in the feeding cavity 414 passes through the opened feeding hole 17 and falls into the cylinder body 1. The distance that the moving rod 431 moves to the left should exceed the position of the left end of the feeding control pad 432 and the outer frame of the feeding box 41, and all the fish food in the feeding cavity 414 on the left side of the feeding control pad 432 is pushed into the fish tank to control the feeding amount. If the fish food is not enough at one time, the number of feedings can be increased. After the electromagnetic coil 434 is powered off, the feeding is finished, and the elastic force of the moving rod spring 433 makes the entire automatic feeding device 4 return to the state before feeding.

[0038] Figure 7The sealed fish farming system 100 provided by the second embodiment of the utility model with the automatic feeding device 4 is shown. The difference from the above-mentioned embodiment 1 is that the lower part of the sealing movable top rod 423 of this embodiment is a rotating cover plate 425, a first rotating cover plate connecting shaft 426 is provided between the sealing movable top rod 423 and the rotating cover plate 425, a second rotating cover plate connecting shaft 427 is provided between the cylinder body 1 and the rotating cover plate 425, and the rotating cover plate 425 can move along the first rotating cover plate connecting shaft 426 and the second rotating cover plate connecting shaft 427. 7 is rotated, the automatic feeding device 4 is provided with a feeding box 41, a sealing plug assembly 42 and a feeding control assembly 43, a feeding port 411 and a feeding cover 412 are provided at the upper end of the feeding box 41, the feeding box 41 is also provided with a feeding hole 413, the cylinder body 1 is provided with a feeding hole 17, the feeding hole 413 is provided on the side of the sealing plug assembly 42 and matches with the sealing plug assembly 42, the feeding hole 17 is provided at the lower end of the sealing plug assembly 42, and the feeding control assembly 43 passes through the sealing plug assembly 42 and the feeding hole 413 and is plugged into the feeding box 41.The sealing plug assembly 42 includes a feeding hole sealing plug 421, a feeding hole holding spring 422 and a sealing movable push rod 423. A sealing plug control hole 4211 is provided below the feeding hole sealing plug 421. The feeding hole holding spring 422 and the sealing movable push rod 423 are respectively arranged in the sealing plug control hole 4211. The sealing movable push rod 423 is arranged below the feeding hole holding spring 422. The feeding control assembly 43 includes a moving rod 431, a feeding control pad 432, a moving rod spring 433 and an electromagnetic coil 434. The lower part of the sealing movable push rod 423 is a rotating cover plate 425. The rotating cover plate 425 acts as a sealing plug to seal the feeding hole 17. When there is no feeding action, the sealing movable push rod 423 is in Under the action of the feeding hole pressing spring 422, the feeding hole 17 is pressed by the rotating cover plate 425 under the sealing movable top rod 423. The specific action is to open the feeding cover 412 and add fish food into the feeding box 41 from the feeding hole. When not feeding, the spring force of the moving rod spring 433 presses the feeding hole sealing plug 421 to seal the feeding hole 413, and the fish food will not leak out. At the same time, the feeding hole pressing spring 422 presses the feeding hole 17 and the feeding sealing ring 171 through the rotating cover plate 425 under the sealing movable top rod 423, so that the feeding hole 17 is impermeable to water and air. When the scheduled feeding time is reached, the control system 100 energizes the electromagnetic coil 434, and the moving rod 431 moves to the left under the action of the magnetic force. The moving rod spring 433 is compressed, and the entire moving rod 431 moves to the left, driving the feeding hole sealing plug 421 to move to the left, opening the feeding hole 413 of the feeding box 41. At the same time, the feeding hole sealing plug 421 moves to the left under the action of the moving rod 431, driving the feeding hole compression spring 422 and the sealing movable push rod 423 installed on the feeding hole sealing plug 421 to move to the left at the same time. The sealing movable push rod 423 is pushed to the left to pull the rotating cover plate 425 to rotate, and the feeding hole compression spring 422 is compressed by the sealing movable push rod 423. The rotating cover plate 425 under the sealing movable push rod 423 rotates along the first rotating cover plate connecting shaft 426 and the second rotating cover plate connecting shaft 427 to open the feeding hole 17. At the same time, as the feeding hole sealing plug 421 moves to the left as a whole, the feeding hole 413 of the feeding box 41 is opened. At this time, the feeding cavity 414 moves to the left. After the fish food passes through the feeding hole 413 of the feeding box 41, the fish food in the feeding cavity 414 falls into the cylinder body 1 through the opened feeding hole 17. The leftward movement distance of the moving rod 431 should exceed the position of the left end of the feeding control pad 432 and the outer frame of the feeding box 41. The fish food in the feeding cavity 414 on the left side of the feeding control pad 432 is all pushed into the fish tank to control the feeding amount. If the fish food is not enough at one time, the number of feedings can be increased. After the electromagnetic coil 434 is powered off, the feeding is completed, and the elastic force of the moving rod spring 433 causes the entire automatic feeding device 4 to return to the state before feeding.

[0039] Figure 8The sealed fish farming system 100 provided by the third embodiment of the utility model in which the automatic feeding device 4 is provided is shown. Different from the above-mentioned second embodiment, the lower part of the sealing movable top rod 423 of this embodiment is a sliding cover plate 428, and a sliding cover plate connecting shaft 429 is provided between the sealing movable top rod 423 and the sliding cover plate 428. The sliding cover plate 428 can slide along the sliding cover plate connecting shaft 429. The automatic feeding device 4 is provided with a feeding box 41, a sealing plug assembly 42 and a feeding control assembly 43. The upper end of the feeding box 41 is provided with a feeding port 411 and a feeding cover 412. The feeding box 41 is also provided with a feeding hole 413. The cylinder body 1 is provided with a feeding hole 17. The feeding hole 413 is provided on the side of the sealing plug assembly 42 and matches the sealing plug assembly 42. The feeding hole 17 is provided at the lower end of the sealing plug assembly 42. The feeding control assembly 43 passes through the sealing plug assembly 42 and the feeding hole 413 and is plugged into the feeding box 41.The sealing plug assembly 42 includes a feeding hole sealing plug 421, a feeding hole pressing spring 422 and a sealing movable push rod 423. A sealing plug control hole 4211 is provided below the feeding hole sealing plug 421. The feeding hole pressing spring 422 and the sealing movable push rod 423 are respectively arranged in the sealing plug control hole 4211. The sealing movable push rod 423 is arranged below the feeding hole pressing spring 422. The feeding control assembly 43 includes a moving rod 431, a feeding control pad 432, a moving rod spring 433 and an electromagnetic coil 434. The lower part of the sealing movable push rod 423 is a sliding cover plate 428. The sliding cover plate 428 acts as a sealing plug to seal the feeding hole 17. When there is no feeding action, the sealing movable push rod 423 is Under the action of the feeding hole pressing spring 422, the top rod 423 presses the feeding hole 17 through the sliding cover plate 428 under the sealing movable top rod 423. The specific action is to open the feeding cover 412 and add fish food into the feeding box 41 from the feeding hole. When not feeding, the spring force of the moving rod spring 433 presses the feeding hole sealing plug 421 to seal the feeding hole 413, and the fish food will not leak out. At the same time, the feeding hole pressing spring 422 presses the feeding hole 17 and the feeding sealing ring 171 through the sliding cover plate 428 under the sealing movable top rod 423, so that the feeding hole 17 is impermeable to water and air. When the scheduled feeding time is up, the control system energizes the electromagnetic coil 434, and the moving rod 431 moves The movable rod 431 moves to the left under the action of the movable rod 431, compressing the movable rod spring 433, and the entire movable rod 431 moves to the left, driving the feeding hole sealing plug 421 to move to the left, opening the feeding hole 413 of the feeding box 41. At the same time, the feeding hole sealing plug 421 moves to the left under the action of the movable rod 431, driving the feeding hole compression spring 422 and the sealing movable push rod 423 installed on the feeding hole sealing plug 421 to move to the left at the same time. The sealing movable push rod 423 is pushed to the left to pull the sliding cover plate 428 to slide, and the feeding hole compression spring 422 is compressed by the sealing movable push rod 423, and the sliding cover plate 428 under the sealing movable push rod 423 slides to open the feeding hole 17. The hole sealing plug 421 moves to the left as a whole, opening the feeding hole 413 of the feeding box 41. At this time, the feeding cavity 414 moves to the left. After the fish food passes through the feeding hole 413 of the feeding box 41, the fish food in the feeding cavity 414 falls into the cylinder body 1 through the opened feeding hole 17. The distance that the moving rod 431 moves to the left exceeds the position of the left end of the feeding control pad 432 and the outer frame of the feeding box 41. The fish food in the feeding cavity 414 on the left side of the feeding control pad 432 is all pushed into the fish tank to control the feeding amount. If the fish food is not enough at one time, the number of feedings can be increased. After the electromagnetic coil 434 is powered off, the feeding is completed, and the elastic force of the moving rod spring 433 causes the entire automatic feeding device 4 to return to the state before feeding.

[0040] Preferably, if Figures 9-11As shown, it also includes an internal and external air pressure self-balancing device 5, which includes a float 51, a first hose 52 and a third connecting component. The cylinder body 1 is provided with an external air hole 18 connected to the third connecting component. One end of the first hose 52 is connected to the third connecting component and communicates with the external air hole 18. The other end of the first hose 52 passes through the float 51 and has an internal air hole 521. The height of the internal air hole 521 is higher than the water surface height inside the cylinder body 1. The external air hole 18 is provided at the bottom, side or top of the cylinder body 1. The float 51 and the first hose 52 are both located on the inner side of the cylinder body 1. The third connecting component includes a third connecting member 53 sealedly connected to the external air hole 18 and a third connecting joint 54 sealedly connected between the third connecting member 53 and the first hose 52. The third connecting member 53 is sealed and connected to the outer air hole 18 through a seal or a sealant, and the sealing connection effect is good. The float 51 floats on the water surface inside the cylinder body 1. The float 51 can maintain the inner air hole 521 of the first hose 52 above the water surface. The outer air hole 18 is connected with the inner air hole 521 through the third connecting component and the first hose 52, thereby realizing the connection between the air outside the cylinder body 1 and the air inside the cylinder body 1, and maintaining the balance of the air pressure inside and outside the cylinder body 1. It can stably supply air to the cylinder body 1, ensure the oxygen demand of the fish, and effectively prevent the water from overflowing from the fish tank due to the tilt or inversion of the fish tank, thereby causing accidents or the death of the fish. Figure 8 The outer vent hole 18 is provided at the bottom of the cylinder body 1. When transporting fish, because the bottom surface of the transport vehicle is not completely flat, the outer vent hole 18 will not be blocked and can be ventilated normally; Fig. 9 The outer air hole 18 is arranged on the side of the cylinder body 1. No matter whether the height of the outer air hole 18 is higher than the water level in the cylinder body 1, it can ensure smooth communication between the air inside and outside the cylinder body 1 and balance the air pressure inside and outside the cylinder body 1. Fig.10 The outer air hole 18 is arranged at the top of the cylinder body 1. At this time, the outer air hole 18 can better ensure the smoothness of ventilation. Even if the third connecting component is not sealed firmly due to long-term use, it will not hinder the circulation of air inside and outside the cylinder body 1, and will not hinder the self-balancing adjustment of the air pressure inside and outside the cylinder body 1.

[0041] Preferably, if Fig.12 As shown, it also includes an automatic heating device 6, which includes a heating film or a heating rod 61. The heating rod 61 is arranged in the cylinder body 1. The heating rod 61 is connected to a heating rod wire 62. The heating rod wire 62 passes through the cylinder body 1 in a sealed manner. The heating film is arranged on the cylinder wall or the cylinder bottom of the cylinder body 1. When the heating film is used to heat the cylinder body 1, the heating film is a heating ceramic sheet. The heating ceramic sheet is attached to the outer side of the cylinder wall or the cylinder bottom of the sealed cylinder body 1. The heating ceramic sheet has a temperature display and temperature adjustment, which can control the temperature in the cylinder body 1; as shown Fig.11As shown, this embodiment uses a heating rod 61 to heat the cylinder body 1, the heating rod wire 62 and the cylinder body 1 are sealed and connected by wire sealant, and the heating rod wire 62 is plugged into an external plug. The heating rod wire 62 is externally connected to a thermostat 63, and the thermostat 63 monitors the temperature inside the cylinder body 1.

[0042] Preferably, if Fig.12 As shown, it also includes an auxiliary oxygenation device 7. When the number of fish in the tank is large, the tank body 1 needs to be assisted in oxygenation. The auxiliary oxygenation device 7 includes an oxygenation pump 71, an oxygenation pipeline 72, an oxygenation tank body 1 connecting pipe, an oxygenation connecting pipe 74 and an air dispersion stone 75. One end of the oxygenation pipeline 72 is connected to the oxygenation pump 71, and the other end of the oxygenation pipeline 72 is connected to the oxygenation tank body 1 connecting pipe. The oxygenation tank body 1 connecting pipe runs through the tank body 1 and is connected to the oxygenation connecting pipe 74. The other end of the oxygenation connecting pipe 74 is connected to the air dispersion stone 75. The pump 71 is provided with an oxygenation pump outlet 711, and the oxygenation pipeline 72 is connected to the oxygenation pump 71 through the oxygenation pump outlet 711. The oxygenation pipeline 72 is arranged outside the cylinder body 1, and the oxygenation connecting pipe 74 is arranged inside the cylinder body 1. The oxygenation cylinder body 1 connecting pipe and the cylinder body 1 are sealed and connected airtightly through the oxygenation cylinder body 1 connecting pipe seal. The air dispersion stone 75 is provided with an air dispersion stone air inlet hole 751. The oxygenation connecting pipe 74 presses air into the air dispersion stone air inlet hole 751, and the air passes through the air dispersion stone 75 to oxygenate the water in the cylinder body 1.

[0043] Preferably, the filter assembly 24 includes a first connecting pipe 241, a first sealed filter tank 242 and a second connecting pipe 243. One end of the first connecting pipe 241 is connected to the four-way connector 23, and the other end of the first connecting pipe 241 is connected to the first sealed filter tank 242. The first sealed filter tank 242 is provided with a first sealed filter tank water outlet 2421. One end of the second connecting pipe 243 is connected to the first sealed filter tank water outlet 2421, and the other end of the second connecting pipe 243 is connected to the water inlet 13 of the cylinder body 1. The water entering the filter assembly 24 first passes through the first connecting pipe 241 and is then pressed into the first sealed filter tank 242 from the first sealed filter tank water inlet 2427 of the first sealed filter tank 242 for filtration and purification. The filtered water then passes through the first sealed filter tank water outlet 2421 of the first sealed filter tank 242 and enters the second connecting pipe 2 43, the water in the second connecting pipe 243 flows back into the cylinder body 1 through the water inlet 13 of the cylinder body 1, the first sealed filter tank 242 is provided with a first filter chamber 2422 and a first sewage chamber 2423, the first filter chamber 2422 is provided at the upper end of the first sewage chamber 2423, a first sewage chamber partition 2424 is provided between the first filter chamber 2422 and the first sewage chamber 2423, the biochemical filter cotton in the first filter chamber 2422 filters the water in the first filter chamber 2422, the water is filtered out of the residue under the filtration of the biochemical filter cotton, the residue falls into the first sewage chamber 2423, after the residue in the first sewage chamber 2423 accumulates for a period of time, the first sewage valve 2425 of the first sewage chamber 2423 is opened, the residue is discharged from the first sewage chamber 2423 through the first sewage pipe 2426 of the first sewage chamber 2423, so as to filter the water in the cylinder body 1.

[0044] Preferably, the filtering and oxygenating component 32 includes a third connecting pipe 321 and a second sealed filter tank 322, one end of the third connecting pipe 321 is connected to the vacuum water pump 31, and the other end of the third connecting pipe 321 is connected to the second sealed filter tank 322. Specifically, when the vacuum water pump 31 is powered on, vacuum suction is generated at the water inlet of the vacuum water pump 31. Since the entire filtering and oxygenating device is in a sealed state, the suction enters the second sealed filter tank 322 through the third connecting pipe 321, and internal suction is generated in the second sealed filter tank 322. The suction in the second sealed filter tank 322 has two places to suck other media. The second sealed filter tank 322 is provided with an air suction hole 3221, and the outer end of the air suction hole 3221 is connected to a second one-way valve 3222. One of the suction holes in the second sealed filter tank 322 passes through the second one-way valve 3222 from the air suction hole 3221 of the second sealed filter tank 322 to suck air into the second sealed filter tank 322. The one-way valve 3222 can only suck water into the second sealed filter tank 322 in one direction. When the vacuum water pump 31 is not working, there is no internal suction force in the second sealed filter tank 322, and the second one-way valve 3222 will prevent water from flowing out of the second sealed filter tank 322; another suction force in the second sealed filter tank 322 sucks the water in the cylinder body 1 into the second sealed filter tank 322 from the water outlet 12 of the cylinder body 1 through the second water outlet connecting pipe 33, so that water and air are fully mixed in the second sealed filter tank 322, and the dissolved oxygen content in the water is increased to achieve oxygenation. The air suction hole 3221 in the second sealed filter tank 322 is more than 2 times smaller than the water inlet hole of the second sealed filter tank 322 of the second sealed filter tank 322. An adjustable switch can be set behind the rear end of the second one-way valve 3222 to adjust the air intake of the air suction hole 3221 of the second sealed filter tank 322, and the water in the second sealed filter tank 322 is mainly water, so as to filter and purify the water in the cylinder body 1.

[0045] Preferably, the first sealed filter tank 242 is provided with a first filter chamber 2422 and a first sewage chamber 2423, the first filter chamber 2422 is provided at the upper end of the first sewage chamber 2423, and a first sewage chamber partition 2424 is provided between the first filter chamber 2422 and the first sewage chamber 2423; the biochemical filter cotton in the first filter chamber 2422 filters the water in the first filter chamber 2422, and the water is filtered out of the residue under the filtration of the biochemical filter cotton, and the residue falls into the first sewage chamber 2423. After the residue in the first sewage chamber 2423 accumulates for a period of time, the first sewage valve 2425 of the first sewage chamber 2423 is opened, and the residue is discharged from the first sewage chamber 2423 through the first sewage pipe 2426 of the first sewage chamber 2423, thereby filtering the water in the cylinder body 1.

[0046] Preferably, the second sealed filter tank 322 is provided with an air inlet, the air inlet is connected to the second one-way valve 3222, the second sealed filter tank 322 is also provided with a second filter chamber 3223 and a second sewage chamber 3224, the second filter chamber 3223 is provided at the upper end of the second sewage chamber 3224, a second sewage chamber partition 3225 is provided between the second filter chamber 3223 and the second sewage chamber 3224, the second filter chamber 3223 is provided with biochemical filter cotton, activated carbon, biochemical ceramic ring and other filtering materials to filter and purify the water in the cylinder, the residue of the water in the second filter chamber 3223 filtered by the biochemical filter cotton falls into the second sewage chamber 3224, and after accumulating for a period of time, the second sewage chamber 3224 is opened. The second sewage valve 3226 of the second sewage chamber 3224, the residue is discharged from the second sewage chamber 3224 through the second sewage pipe 3227 of the second sewage chamber 3224, so as to filter the water in the cylinder body 1. The second filter chamber 3223 and the second sewage chamber 3224 are separated by the second sewage chamber partition 3225. After the water and air are mixed in the second sealed filter tank 322, the vacuum water pump 31 pumps the cleaned, filtered and water-air mixed water to the water outlet 12 of the vacuum water pump 31. The water enters the water inlet 13 of the cylinder body 1 through the third connecting pipe 321 arranged between the vacuum water pump 31 and the cylinder body 1 and is re-injected into the cylinder body 1, so as to realize the circulation process of cleaning, filtering and oxygenating the water in the cylinder body 1.

[0047] Preferably, the sealing plug assembly 42 includes a feeding hole sealing plug 421, a feeding hole clamping spring 422 and a sealing movable push rod 423, a sealing plug control hole 4211 is provided below the feeding hole sealing plug 421, the feeding hole clamping spring 422 and the sealing movable push rod 423 are respectively provided in the sealing plug control hole 4211, and the sealing movable push rod 423 is provided below the feeding hole clamping spring 422.

[0048] Preferably, the feeding control component 43 includes a moving rod 431, a feeding control pad 432, a moving rod spring 433 and an electromagnetic coil 434. One end of the moving rod 431 passes through the sealing component and the feeding hole 413 and is plugged into the feeding box 41. The end of the moving rod 431 plugged into the feeding box 41 is sleeved with the feeding control pad 432, and the other end of the moving rod 431 is sleeved with the moving rod spring 433. The side of the moving rod 431 sleeved with the moving rod spring 433 is provided with an electromagnetic coil 434. A feeding cavity 414 is formed between the feeding control pad 432 and the sealing plug component 42. The position of the feeding control pad 432 on the moving rod 431 is adjusted to control the size of the feeding cavity 414. To control the feeding amount, a feeding box sealing pad 415 is provided at the connection between the moving rod 431 and the feeding box 41. The feeding box sealing pad 415 prevents fish food from spilling out of the feeding box 41. The feeding box sealing pad 415 does not affect the left and right movement of the moving rod 431. During feeding, the control system 100 energizes the electromagnetic coil 434, and the moving rod 431 moves to the left under the action of the magnetic force, compressing the moving rod spring 433, and the entire moving rod 431 moves to the left, driving the sealing plug assembly 42 to move to the left, opening the feeding hole 413 and the feeding hole 17 for feeding. After the electromagnetic coil 434 is powered off, the feeding is finished, and the elastic force of the moving rod spring 433 returns the entire automatic feeding device 4 to the state before feeding.

[0049] Preferably, the third connecting component includes a connecting piece sealed at the external air vent 18 and a connecting joint sealed between the connecting piece and the first hose 52. The connecting piece is sealed at the external air vent 18 by a seal or a sealant, and the sealing connection effect is good.

[0050] In summary, the utility model provides a sealed fish farming system, including a sealed cylinder, wherein the cylinder is provided with a water outlet and a water inlet, including a filtering and oxygenating device and an automatic feeding device, wherein the filtering and oxygenating device is provided with a centrifugal pump, a first connecting component, a four-way connector, a filtering component and an oxygenating component, wherein the centrifugal pump is connected to the first connecting component, and the water in the cylinder is pumped out to the first connecting component through the water outlet, and the three connecting ports of the four-way connector are respectively connected to the first connecting component, the oxygenating component and the filtering component, and the water is divided into two parts in the four-way connector, and one part of the water is connected to the filtering component through the filtering component. After filtering and purifying, the water flows back to the cylinder from the water inlet, and a part of the water flows back to the cylinder after being oxygenated by the oxygenation component; the filtering and oxygenation device can also be provided with a vacuum water pump, a filtering and oxygenation component and a second connecting component, the vacuum water pump is arranged outside the cylinder, one end of the vacuum water pump is connected to the water inlet, the other end of the vacuum water pump is connected to the filtering and oxygenation component, the second connecting component is connected to the water outlet, the suction of the vacuum water pump causes the water to flow from the water outlet through the second connecting component to the filtering and oxygenation component for filtration, purification and oxygenation, and the filtered and oxygenated water is pumped to the water inlet by the vacuum water pump and re-injected into the cylinder. Preferably, the internal and external air pressure self-balancing device on the cylinder performs ventilation inside and outside the cylinder, and the automatic heating device on the cylinder effectively heats the cylinder. By this, the sealed fish farming system of the utility model realizes automatic filtering, feeding, ventilation and heating, and is convenient for sewage discharge, water change and fish change.

[0051] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A sealed fish farming system, comprising a sealed cylinder, wherein the cylinder is provided with a water outlet and a water inlet, wherein: It comprises a filtering and oxygenating device and an automatic feeding device, wherein the filtering and oxygenating device is provided with a centrifugal pump, a first connecting component, a four-way connector, a filtering component and an oxygenating component, the water outlet is connected to the centrifugal pump, the centrifugal pump is connected to one end of the first connecting component, the four-way connector is provided with a first connecting port, a second connecting port and a third connecting port, the first connecting port of the four-way connector is connected to the first connecting component, the third connecting port of the four-way connector is connected to the oxygenating component, the second connecting port of the four-way connector is connected to one end of the filtering component, one end of the oxygenating component is plugged into the cylinder body, and the other end of the filtering component is connected to the water inlet of the cylinder body; or The filtering and oxygenating device is provided with a vacuum water pump, a filtering and oxygenating component and a second connecting component. The vacuum water pump is arranged outside the cylinder body, one end of the vacuum water pump is connected to the water inlet of the cylinder body, and the other end of the vacuum water pump is connected to the filtering and oxygenating component. The second connecting component is respectively connected to the filtering and oxygenating component and the water outlet of the cylinder body.

2. The sealed fish farming system according to claim 1, characterized in that: The automatic feeding device is provided with a feeding box, a sealing plug assembly and a feeding control assembly. The upper end of the feeding box is provided with a feeding port and a feeding cover. The feeding box is also provided with a feeding hole. The cylinder body is provided with a feeding hole. The feeding hole is provided on the side of the sealing plug assembly and matches the sealing plug assembly. The feeding hole is provided at the lower end of the sealing plug assembly. The feeding control assembly passes through the sealing plug assembly and the feeding hole and is plugged into the feeding box.

3. The sealed fish farming system according to claim 1, characterized in that: It also includes an internal and external air pressure self-balancing device, which includes a float, a first hose and a third connecting component. The cylinder body is provided with an external air hole connected to the third connecting component. One end of the first hose is connected to the third connecting component and communicated with the external air hole, and the other end of the first hose passes through the float and has an internal air hole.

4. The sealed fish farming system according to claim 1, characterized in that: It also includes an automatic heating device, which includes a heating film or a heating rod. The heating rod is arranged in the cylinder body, the heating rod is connected to a heating rod wire, the heating rod wire seals and passes through the cylinder body, and the heating film is arranged on the cylinder wall or bottom of the cylinder body.

5. The sealed fish farming system according to claim 4, characterized in that: It also includes an auxiliary oxygenation device, which includes an oxygenation pump, an oxygenation pipeline, an oxygenation cylinder connecting pipe, an oxygenation connecting pipe and an air dispersion stone. One end of the oxygenation pipeline is connected to the oxygenation pump, and the other end of the oxygenation pipeline is connected to the oxygenation cylinder connecting pipe. The oxygenation cylinder connecting pipe runs through the cylinder and is connected to the oxygenation connecting pipe, and the other end of the oxygenation connecting pipe is connected to the air dispersion stone.

6. The sealed fish farming system according to claim 1, characterized in that: The filter assembly includes a first connecting pipe, a first sealed filter tank, and a second connecting pipe, wherein one end of the first connecting pipe is connected to the four-way connector, and the other end of the first connecting pipe is connected to the first sealed filter tank, the first sealed filter tank is provided with a first sealed filter tank water outlet, one end of the second connecting pipe is connected to the first sealed filter tank water outlet, and the other end of the second connecting pipe is connected to the water inlet of the cylinder body; or The filtering and oxygenating assembly comprises a third connecting pipe and a second sealed filtering tank, one end of the third connecting pipe is connected to the vacuum water pump, and the other end of the third connecting pipe is connected to the second sealed filtering tank.

7. The sealed fish farming system according to claim 6, characterized in that: The first sealed filter tank is provided with a first filter chamber and a first sewage chamber, the first filter chamber is provided at the upper end of the first sewage chamber, and a first sewage chamber partition is provided between the first filter chamber and the first sewage chamber; or The second sealed filter tank is provided with an air intake port, the air intake port is connected to a second one-way valve, the second sealed filter tank is also provided with a second filter chamber and a second sewage chamber, the second filter chamber is provided at the upper end of the second sewage chamber, and a second sewage chamber partition is provided between the second filter chamber and the second sewage chamber.

8. The sealed fish farming system according to claim 2, characterized in that: The sealing plug assembly includes a feeding hole sealing plug, a feeding hole holding spring and a sealing movable push rod. A sealing plug control hole is provided below the feeding hole sealing plug. The feeding hole holding spring and the sealing movable push rod are respectively arranged in the sealing plug control hole. The sealing movable push rod is arranged below the feeding hole holding spring.

9. The sealed fish farming system according to claim 2, characterized in that: The feeding control component includes a moving rod, a feeding control pad, a moving rod spring and an electromagnetic coil. One end of the moving rod passes through the sealing component and the feeding hole and is inserted into the feeding box. The end of the moving rod inserted into the feeding box is sleeved with the feeding control pad, and the other end of the moving rod is sleeved with the moving rod spring. The electromagnetic coil is provided on the side of the moving rod on which the moving rod spring is sleeved.

10. The sealed fish farming system according to claim 3, characterized in that: The third connecting assembly includes a connecting piece sealedly connected to the outer vent hole and a connecting joint sealedly connected between the connecting piece and the first hose.

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