Tailwater filtration device and boat-type fishery breeding system

Abstract

The present invention discloses a tailwater filtration device and a ship-type fishery breeding system, the tailwater filtration device comprises a first recovery pipe, a second recovery pipe, an inner filter screen with a first inlet, and an outer filter screen with a second inlet; wherein, a plurality of first mesh holes are distributed on the surface of the inner filter screen, a plurality of second mesh holes are distributed on the surface of the outer filter screen, and the aperture of the first mesh hole is larger than the aperture of the second mesh hole; the inner filter screen is arranged in the inner cavity of the outer filter screen and connected with the outer filter screen, and the first inlet and the second inlet are in the same direction; one end of the first recovery pipe is connected to the bottom of the inner filter screen and a first valve is arranged on its passage; one end of the second recovery pipe is connected to the bottom of the outer filter screen and a second valve is arranged on its passage. The tailwater filtration device and the ship-type fishery breeding system disclosed by the present invention solve the technical problem of poor convenience in the existing method of centralized cleaning of pollutants accumulated at the bottom of the breeding cabin by artificial diving operation.

Description

Technical Field

[0001] The invention belongs to the technical field of fishery breeding equipment, and in particular relates to a tailwater filtering device and a ship-type fishery breeding system. Background Art

[0002] In recent years, with the development of aquaculture, ship-type aquaculture model is gradually replacing the traditional offshore cage aquaculture model. Ship-type aquaculture isolates the aquaculture water from the external seawater through the aquaculture cabin. Leftover bait, dead fish and fish feces are concentrated at the bottom of the aquaculture cabin, which can effectively prevent the aquaculture water containing a large amount of pollutants from being directly discharged into the sea and causing environmental pollution.

[0003] As the breeding time goes by, a large amount of pollutants such as leftover bait, dead fish and fish feces will accumulate at the bottom of the breeding tank. If these pollutants are not cleaned up in time, a large number of harmful bacteria will be generated, which will not only damage the water quality of the breeding water, but also cause the number of live fish deaths to increase exponentially, thus causing immeasurable economic losses. However, at present, the pollutants accumulated at the bottom of the breeding tank are mainly cleaned up by manual diving operations, which is very inconvenient. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a tailwater filtration device and a boat-type fishery farming system, aiming to solve the technical problem of poor convenience in the existing method of centralized cleaning of pollutants accumulated at the bottom of the farming tank by artificial diving operations.

[0005] In order to achieve the purpose, the technical solution adopted by the present invention is as follows:

[0006] A tail water filtering device, comprising a first recovery pipe, a second recovery pipe, an inner filter screen having a first inlet, and an outer filter screen having a second inlet; wherein:

[0007] A plurality of first mesh holes are distributed on the surface of the inner filter screen, a plurality of second mesh holes are distributed on the surface of the outer filter screen, and the aperture of the first mesh holes is larger than the aperture of the second mesh holes; the inner filter screen is arranged in the inner cavity of the outer filter screen and is connected to the outer filter screen, and the first inlet and the second inlet are oriented in the same direction, and there is a gap between the bottom of the inner filter screen and the bottom of the outer filter screen; one end of the first recovery pipe is connected to the bottom of the inner filter screen, and a first valve is provided on the passage of the first recovery pipe; one end of the second recovery pipe is connected to the bottom of the outer filter screen, and a second valve is provided on the passage of the second recovery pipe.

[0008] Furthermore, the bottom surface of the inner filter screen is an inclined surface, and one end of the first recovery pipe is connected to the lower side of the inclined surface.

[0009] Furthermore, a connecting sleeve protruding outward is fixed to the bottom of the outer filter screen, the inner cavity of the connecting sleeve is connected to the inner cavity of the outer filter screen, and one end of the second recovery pipe is detachably connected to an end of the connecting sleeve away from the outer filter screen.

[0010] Furthermore, the bottom surface of the outer filter screen is an arc surface with an opening toward the bottom of the inner filter screen, and one end of the second recovery pipe is connected to the lowest point of the arc surface.

[0011] Correspondingly, the present invention also proposes a ship-type fishery breeding system, which includes a breeding cabin, a collection cabin and a tailwater filtering device; wherein,

[0012] A discharge port is provided at the bottom of the breeding cabin, the collecting cabin is arranged below the breeding cabin and is connected with the breeding cabin through the discharge port, and a first control valve is arranged at the discharge port;

[0013] The tailwater filtering device comprises an inner filter screen having a first inlet, an outer filter screen having a second inlet, a first suction device for collecting fish, and a second suction device for collecting residual bait and / or fish feces;

[0014] A plurality of first mesh holes are distributed on the surface of the inner filter screen, and a plurality of second mesh holes are distributed on the surface of the outer filter screen, and the aperture of the first mesh hole is larger than the aperture of the second mesh hole; the inner filter screen and the outer filter screen are both installed at the bottom of the breeding cabin and are both located in the collection cabin, and the first inlet and the second inlet are both arranged opposite to the discharge port, and there is a gap between the bottom of the inner filter screen and the bottom of the outer filter screen;

[0015] One end of the first suction device is connected to the bottom of the inner filter screen, and the other end of the first suction device is used to communicate with the outside world; one end of the second suction device is connected to the bottom of the outer filter screen, and the other end of the second suction device is used to communicate with the outside world.

[0016] Furthermore, the first suction device includes a first suction pump and a first recovery pipe through which fish can pass, one end of the first recovery pipe is connected to the bottom of the inner filter screen, and the first suction pump is installed on the passage of the first recovery pipe.

[0017] Furthermore, the bottom surface of the inner filter screen is an inclined surface, and one end of the first recovery pipe is connected to the lower side of the inclined surface.

[0018] Furthermore, the second suction device includes a second suction pump and a second recovery pipe through which residual bait and / or fish feces can pass, one end of the second recovery pipe is connected to the bottom of the outer filter screen, and the second suction pump is installed on the passage of the second recovery pipe.

[0019] Furthermore, the ship-type fishery breeding system also includes a first fixed plate with a first through hole and a second fixed plate with a second through hole; wherein, one side of the first fixed plate is fixed to the bottom of the breeding cabin and the first through hole is arranged opposite to the discharge port, and the second fixed plate is detachably installed on the other side of the first fixed plate and the second through hole is arranged opposite to the discharge port; the inner filter screen and the outer filter screen can both be detachably installed on the second fixed plate.

[0020] Furthermore, a water outlet for communicating with an external water body is provided at the bottom of the collection chamber, and a second control valve is provided at the water outlet.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The tailwater filtering device proposed by the present invention can filter pollutants of different volumes separately by setting an inner filter and an outer filter, and utilizing the different mesh diameters of the two filter layers. When used specifically, the inner and outer filter layers can be installed at the sewage outlet at the bottom of the aquaculture cabin, so that pollutants such as residual bait, dead fish and fish feces deposited at the bottom of the aquaculture cabin can be discharged into the corresponding filter screens for storage and recovery respectively: first, the dead fish are concentrated at the bottom of the inner filter screen through the primary filtration of the inner filter screen and recovered through the first recovery pipe, and then the residual bait and fish feces are concentrated at the bottom of the outer filter screen through the secondary filtration of the outer filter screen and recovered through the second recovery pipe, so that the automatic classification and collection of pollutants in the aquaculture tailwater can be completed. Thereby, not only the trouble of manual diving operations is avoided, making the cleaning of aquaculture tailwater more convenient and efficient, but also the classification and collection of dead fish and residual bait and fish feces among the pollutants is realized, so that the cleaning effect of aquaculture tailwater is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 It is a schematic structural diagram of a tail water filtration device in one embodiment of the present invention;

[0025] Figure 2It is a partial exploded schematic diagram of a tail water filtering device in one embodiment of the present invention;

[0026] Figure 3 It is a structural schematic diagram of a ship-type fishery farming system in one embodiment of the present invention;

[0027] Figure 4 It is a structural schematic diagram of a ship-type fishery breeding system in another embodiment of the present invention;

[0028] Figure 5 for Figure 3 The enlarged schematic diagram of point A in the middle;

[0029] Figure 6 for Figure 4 A magnified schematic diagram of point B in the middle.

[0030] Description of reference numerals:

[0031] 1-first recovery pipe, 2-second recovery pipe, 21-plug-in part, 211-plug interface, 3-inner filter, 31-first inlet, 4-outer filter, 41-second inlet, 42-connecting sleeve, 5-first valve, 6-second valve, 7-breeding cabin, 71-discharge port, 8-collecting cabin, 81-water outlet, 9-first control valve, 10-first suction device, 11-second suction device, 12-first fixing plate, 121-first through hole, 13-second fixing plate, 131-second through hole, 132-first connecting bolt, 133-second connecting bolt, 14-second control valve.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Reference Figure 1 An embodiment of the present invention provides a tailwater filtration device, which includes a first recovery pipe 1, a second recovery pipe 2, an inner filter screen 3 having a first inlet 31, and an outer filter screen 4 having a second inlet 41; wherein,

[0035] A plurality of first mesh holes (not shown in the figure) are distributed on the surface of the inner filter screen 3, a plurality of second mesh holes (not shown in the figure) are distributed on the surface of the outer filter screen 4, and the aperture of the first mesh hole is larger than the aperture of the second mesh hole; the inner filter screen 3 is arranged in the inner cavity of the outer filter screen 4 and is connected to the outer filter screen 4, and the first inlet 31 and the second inlet 41 are oriented in the same direction, there is a gap between the bottom of the inner filter screen 3 and the bottom of the outer filter screen 4, and a first valve 5 is arranged on the passage of the first recovery pipe 1; one end of the first recovery pipe 1 is connected to the bottom of the inner filter screen 3; one end of the second recovery pipe 2 is connected to the bottom of the outer filter screen 4, and a second valve 6 is arranged on the passage of the second recovery pipe 2.

[0036] In this embodiment, the inner filter screen 3 and the outer filter screen 4 can be connected by bolt connection, gluing, weaving, etc., and the first recovery pipe 1 and the inner filter screen 3 can be connected by plugging. Specifically, a first plug-in through hole can be opened on the inner filter screen 3 and one end of the first recovery pipe 1 can be inserted into the first plug-in through hole from the outside, thereby realizing the connection between the two and easy to disassemble at any time. Similarly, the second recovery pipe 2 and the outer filter screen 4 can also be connected by plugging. Specifically, a second plug-in through hole can be opened on the outer filter screen 4 and one end of the second recovery pipe 2 can be inserted into the second plug-in through hole from the outside, thereby realizing the connection between the two and easy to disassemble at any time. In practical applications, the connection between the recovery pipe and the filter screen can be fixed by weaving or other methods. In addition, the outer filter screen 4 should be provided with a hole corresponding to the air avoidance set for the first recovery pipe 1, so that the first recovery pipe 1 can pass through the outer filter screen 4 and communicate with the inner filter screen 3. The first valve 5 and the second valve 6 are preferably a gate valve, and the valve body parts thereof are respectively arranged on the passages of the first recovery pipe 1 and the second recovery pipe 2, and the valve bodies are controlled to be opened or closed by their driving devices, thereby controlling the conduction or cutoff of the passages of the first recovery pipe 1 and the second recovery pipe 2. It should be noted that the first valve 5 and the second valve 6 are valve devices well known and commonly used by those skilled in the art, and specifically may be pneumatic valves, hydraulic valves, electric valves, etc., and their specific mechanical structures and specific implementation methods of the opening and closing drives will not be described in detail herein.

[0037] The specific installation process and workflow of the tailwater filtration device of this embodiment applied to the boat-type fishery aquaculture system are as follows:

[0038] First, the inner filter screen 3 and the outer filter screen 4 are respectively installed at the bottom of the breeding cabin 7 located in the collection cabin 8, and the first inlet 31 and the second inlet 41 are opposite to the discharge port 71 at the bottom of the breeding cabin 7, wherein a cover plate or a valve can be provided at the discharge port 71, and the cover plate or the valve is kept closed during the installation process to prevent the breeding water in the breeding cabin 7 from flowing out of the discharge port 71. Then, one end of the first recovery pipe 1 is passed through the air-avoiding through hole on the outer filter screen 4 and plugged into the first plug-in through hole of the inner filter screen 3, so that the first recovery pipe 1 is connected to the inner filter screen 3, and the other end of the first recovery pipe 1 extends out of the collecting chamber 8, and can be specifically connected to a container for storing fish, wherein the height of one end of the first recovery pipe 1 should be higher than the height of the other end thereof, so as to ensure that the fish in the inner filter screen 3 can enter the first recovery pipe 1 under the action of gravity and flow out from the other end of the first recovery pipe 1; then, one end of the second recovery pipe 2 is plugged into the second plug-in through hole of the outer filter screen 4, so that the second recovery pipe 2 is connected to the outer filter screen 4, and the other end of the second recovery pipe 2 extends out of the collecting chamber 8, and can be specifically connected to a container for storing residual bait and fish feces, wherein the height of one end of the second recovery pipe 2 should be higher than the height of the other end thereof, so as to ensure that the residual bait and fish feces in the outer filter screen 4 can enter the second recovery pipe 2 under the action of gravity and flow out from the other end of the second recovery pipe 2. Finally, the first valve 5 and the second valve 6 are respectively installed on the passages of the first recovery pipe 1 and the second recovery pipe 2, and specifically can be installed on the parts of the first recovery pipe 1 and the second recovery pipe 2 extending outside the collecting chamber 8. In this way, the first valve 5 and the second valve 6 will not contact the water in the collecting chamber 8, and there is no need to use submersible valves, thereby saving equipment costs.

[0039] After the installation is completed and the operation is started, the cover plate or valve at the discharge port 71 is opened, and the dead fish, leftover bait and fish feces settled at the bottom of the culture cabin 7 enter the inner filter screen 3 along with the culture water through the discharge port 71. After the first filtration of the inner filter screen 3, the dead fish in the culture water cannot pass through the first mesh due to their large size, so they remain in the inner filter screen 3 and slide along the bottom of the inner filter screen 3 into the first recovery pipe 1. At this time, the first valve 5 is opened to allow the dead fish in the first recovery pipe 1 to flow out from the other end of the first recovery pipe 1 to the container for storing fish. The dead fish are thus recovered; the residual bait and fish excrement are smaller in size and enter the outer filter screen 4 after passing through the first mesh hole. After the secondary filtration of the outer filter screen 4, the residual bait and fish excrement cannot pass through the second mesh hole with a smaller aperture and remain in the outer filter screen 4, and slide along the bottom of the outer filter screen 4 into the second recovery pipe 2. At this time, the second valve 6 is opened to allow the residual bait and fish excrement in the second recovery pipe 2 to flow out from the other end of the second recovery pipe 2 to the container for storing the residual bait and fish excrement, thus completing the recovery of the residual bait and fish excrement.

[0040] It can be seen that the tailwater filtration device provided in this embodiment can filter pollutants of different volumes separately by setting the inner filter 3 and the outer filter 4, and utilizing the difference in the mesh diameters of the two filter layers. First, the dead fish are concentrated at the bottom of the inner filter 3 through the primary filtration of the inner filter 3 and recovered through the first recovery pipe 1, and then the residual bait and fish feces are concentrated at the bottom of the outer filter 4 through the secondary filtration of the outer filter 4 and recovered through the second recovery pipe 2, so that the automatic classification and collection of pollutants in the aquaculture tailwater can be completed. Thereby, not only the trouble of manual diving operations is avoided, making the cleaning of aquaculture tailwater more convenient and efficient, but also the classification and collection of dead fish and residual bait and fish feces in pollutants are realized, making the cleaning effect of aquaculture tailwater better.

[0041] Further, refer to Figure 1 In an exemplary embodiment, the bottom surface of the inner filter screen 3 is an inclined surface, and one end of the first recovery pipe 1 is connected to the lower side of the inclined surface.

[0042] In this embodiment, the inclined surface helps the fish in the inner filter screen 3 to smoothly slide into the first recovery pipe 1 along the bottom surface of the inner filter screen 3, which can effectively avoid clogging in the inner filter screen 3. The inclined surface can be a straight inclined surface or an arc-shaped inclined surface, and it is only necessary to generate a height difference in the inner filter screen 3 so that the fish in the inner filter screen 3 can smoothly enter the first recovery pipe 1 under the action of gravity. This embodiment does not specifically limit this.

[0043] Further, refer to Figure 1 and Figure 2 In an exemplary embodiment, a connecting sleeve 42 protruding outward is fixed to the bottom of the outer filter screen 4, the inner cavity of the connecting sleeve 42 is connected to the inner cavity of the outer filter screen 4, and one end of the second recovery pipe 2 is detachably connected to the end of the connecting sleeve 42 away from the outer filter screen 4.

[0044] In this embodiment, the connecting sleeve 42 is used to achieve quick connection and disassembly between the outer filter screen 4 and the second recovery pipe 2, which can be achieved by plug-in, threaded connection, etc. In this embodiment, it is preferred to adopt the plug-in method. Specifically, one end of the second recovery pipe 2 is provided with a plug-in portion 21 corresponding to the outer contour of the connecting sleeve 42, and a plug-in port 211 corresponding to the outer contour of the connecting sleeve 42 is provided in the plug-in portion 21. In the connected state, the second recovery pipe 2 is connected to the outer filter screen 4 through the interference fit between the plug-in port 211 and the connecting sleeve 42. When disassembly is required, it is only necessary to apply force to pull the plug-in portion 21 off the connecting sleeve 42. Among them, the material of the connecting sleeve 42 is selected from stainless steel or copper. In order to ensure the reliability of the interference fit between the plug-in port 211 and the connecting sleeve 42, the plug-in portion 21 can be made of a non-metallic material with a large deformation amount. In addition, when the outer filter screen 4 is made of metal, the outer filter screen 4 and the connecting sleeve 42 can be fixed by welding; and when the outer filter screen 4 is made of non-metallic material, the outer filter screen 4 and the connecting sleeve 42 can be fixed by weaving.

[0045] Further, refer to Figure 1 In an exemplary embodiment, the bottom surface of the outer filter screen 4 is an arc surface with an opening toward the bottom of the inner filter screen 3, and one end of the second recovery pipe 2 is connected to the lowest point of the arc surface.

[0046] In this embodiment, the arc surface helps the residual bait and fish feces in the outer filter screen 4 to slide smoothly along the bottom surface of the outer filter screen 4 into the second recovery pipe 2, thereby avoiding blockage in the outer filter screen 4. The specific shape of the arc surface is not limited, as long as the residual bait and fish feces in the outer filter screen 4 can smoothly enter the second recovery pipe 2 under the action of gravity.

[0047] Furthermore, in an exemplary embodiment, the material of the inner filter screen 3 is any one of copper and stainless steel, so that the inner filter screen 3 can have good strength and corrosion resistance, thereby facilitating the improvement of the service life of the inner filter screen 3 .

[0048] Furthermore, in an exemplary embodiment, the first recovery tube 1 and / or the second recovery tube 2 is made of any one of stainless steel, glass, and rubber.

[0049] Correspondingly, refer to Figure 3 and Figure 4 The embodiment of the present invention further provides a ship-type fishery breeding system, which includes a breeding cabin 7, a collection cabin 8 and a tailwater filtering device; wherein,

[0050] A discharge port 71 is provided at the bottom of the breeding cabin 7, and the collecting cabin 8 is arranged below the breeding cabin 7 and is connected to the breeding cabin 7 through the discharge port 71, and a first control valve 9 is provided at the discharge port 71;

[0051] The tailwater filtering device comprises an inner filter screen 3 having a first inlet 31, an outer filter screen 4 having a second inlet 41, a first suction device 10 for collecting fish, and a second suction device 11 for collecting residual bait and / or fish feces;

[0052] A plurality of first mesh holes are distributed on the surface of the inner filter screen 3, and a plurality of second mesh holes are distributed on the surface of the outer filter screen 4, and the aperture of the first mesh hole is larger than the aperture of the second mesh hole; the inner filter screen 3 and the outer filter screen 4 are both installed at the bottom of the breeding cabin 7 and are both located in the collection cabin 8, and the first inlet 31 and the second inlet 41 are both arranged opposite to the discharge port 71, and there is a gap between the bottom of the inner filter screen 3 and the bottom of the outer filter screen 4;

[0053] One end of the first suction device 10 is connected to the bottom of the inner filter 3, and the other end of the first suction device 10 is used to communicate with the outside world; one end of the second suction device 11 is connected to the bottom of the outer filter 4, and the other end of the second suction device 11 is used to communicate with the outside world.

[0054] In this embodiment, the first control valve 9 is preferably a gate valve, and its valve body is partially arranged between the discharge port 71 and the first inlet 31 and the second inlet 41. The valve body is controlled to be opened or closed by its driving device, thereby controlling the timing of the pollutants in the breeding cabin 7 flowing into the tailwater filtration device with the breeding water through the discharge port 71. The suction effect of the first suction device 10 and the second suction device 11 can be specifically achieved by a suction pump. Compared with relying solely on gravity to make the pollutants in the inner filter screen 3 and the outer filter screen 4 slide into the recovery area outside the collection cabin 8, this embodiment makes the recovery process of pollutants more efficient and smooth by using the external force of the first suction device 10, and also avoids the situation where pollutants remain in the inner filter screen 3 and the outer filter screen 4.

[0055] It should be noted that the first control valve 9 in this embodiment is a valve device that is well known and commonly used by technical personnel in this field, and can specifically be a pneumatic valve, a hydraulic valve, an electric valve, etc., and its specific mechanical structure and the specific implementation method of the opening and closing drive will not be repeated here.

[0056] The specific installation process and workflow of the boat-type fish farming system of this embodiment are as follows:

[0057] First, the inner filter screen 3 and the outer filter screen 4 are respectively installed at the bottom of the breeding cabin 7 and connected to the first control valve 9, so that the first inlet 31 and the second inlet 41 are connected to the discharge port 71 at the bottom of the breeding cabin 7 through the first control valve 9, wherein the first control valve 9 is kept closed during the installation process to prevent the breeding water in the breeding cabin 7 from flowing out of the discharge port 71. Then one end of the first suction device 10 is connected to the inner filter screen 3, and the other end extends out of the collection cabin 8 (specifically, it can be connected to a container for storing fish); finally, one end of the second suction device 11 is connected to the outer filter screen 4, and the other end extends out of the collection cabin 8 (specifically, it can be connected to a container for storing residual bait fish feces).

[0058] When the installation is completed and enters the working state, the first control valve 9 at the discharge port 71 is opened, and the dead fish, leftover bait and fish feces settled at the bottom of the breeding cabin 7 enter the inner filter 3 along with the breeding water from the discharge port 71. After the primary filtering action of the inner filter 3, the dead fish in the breeding water cannot pass through the first mesh hole due to their large volume, and thus remain in the inner filter 3 and slide into the first recovery pipe 1 along the bottom of the inner filter 3. The leftover bait and fish feces, due to their small volume, enter the outer filter 4 after passing through the first mesh hole. After the secondary filtering action of the outer filter 4, the leftover bait and fish feces cannot pass through the second mesh hole with a smaller aperture and remain in the outer filter 4. When the pollutants at the bottom of the breeding cabin 7 have basically entered the tailwater filtration device along with the breeding water and have been fully filtered, the first control valve 9 is closed to prevent the breeding water from flowing into the tailwater filtration device to interfere with the pollutant recovery process and to avoid the pollutant recovery process disturbing the live fish cultured in the breeding cabin 7. Subsequently, the first suction device 10 and the second suction device 11 are started respectively to respectively suck the dead fish in the inner filter 3 and the residual bait fish feces in the outer filter 4, and finally the dead fish in the inner filter 3 are sucked into a container for storing fish, and the residual bait fish feces in the outer filter 4 are sucked into a container for storing residual bait fish feces. At this point, the classified recovery of pollutants in the breeding water is completed.

[0059] Further, refer to Figure 3 and Figure 4 In an exemplary embodiment, the first suction device 10 includes a first suction pump (not shown in the figure) and a first recovery pipe 1 through which fish can pass. One end of the first recovery pipe 1 is connected to the bottom of the inner filter 3, and the first suction pump is installed on the passage of the first recovery pipe 1.

[0060] In this embodiment, the first recovery pipe 1 and the inner filter screen 3 can be connected by plugging. Specifically, a first plug-in through hole can be provided on the inner filter screen 3 and one end of the first recovery pipe 1 can be inserted into the first plug-in through hole from the outside, so that the connection between the two is realized and it is easy to disassemble at any time. At the same time, a through hole corresponding to the air-avoiding hole set on the outer filter screen 4 should be provided, so that the first recovery pipe 1 can pass through the outer filter screen 4 and communicate with the inner filter screen 3. The first suction pump can be an electric vacuum pump, and its suction port is connected to the passage of the first recovery pipe 1, and the fish in the inner filter screen 3 can be sucked from one end of the first recovery pipe 1 to the other end of the first recovery pipe 1. Compared with the method of sliding the fish in the inner filter screen 3 into the first recovery pipe 1 only by gravity, this embodiment makes the fish recovery process more efficient and smooth by using the external force of the first suction pump, and also avoids the situation that the fish remain in the inner filter screen 3, and there is no need to set a height difference between the two ends of the first recovery pipe 1.

[0061] It should be noted that the first suction pump in this embodiment is a well-known and commonly used pump device by those skilled in the art, and its specific mechanical structure and specific implementation method of the suction effect will not be described in detail here.

[0062] Further, refer to Figure 3 and Figure 4 In an exemplary embodiment, the bottom surface of the inner filter screen 3 is an inclined surface, and one end of the first recovery pipe 1 is connected to the lower side of the inclined surface.

[0063] In this embodiment, the inclined surface helps the fish in the inner filter screen 3 to smoothly slide into the first recovery pipe 1 along the bottom surface of the inner filter screen 3, which can effectively avoid clogging in the inner filter screen 3. The inclined surface can be a straight inclined surface or an arc-shaped inclined surface, and it is only necessary to generate a height difference in the inner filter screen 3 so that the fish in the inner filter screen 3 can smoothly enter the first recovery pipe 1 under the action of gravity. This embodiment does not specifically limit this.

[0064] Further, refer to Figure 3 and Figure 4 In an exemplary embodiment, the second suction device 11 includes a second suction pump (not shown in the figure) and a second recovery pipe 2 through which residual bait and / or fish feces can pass, one end of the second recovery pipe 2 is connected to the bottom of the outer filter screen 4, and the second suction pump is installed on the passage of the second recovery pipe 2.

[0065] In this embodiment, the second recovery pipe 2 and the outer filter screen 4 can be connected by plugging. Specifically, a second plug-in hole can be opened on the outer filter screen 4 and one end of the second recovery pipe 2 can be inserted into the second plug-in hole from the outside, so that the connection between the two is achieved and it is easy to disassemble at any time. The second suction pump can be an electric vacuum pump, and its suction port is connected to the passage of the second recovery pipe 2, so that the residual bait and fish feces in the outer filter screen 4 can be sucked from one end of the second recovery pipe 2 to the other end of the second recovery pipe 2. Compared with the method of sliding the residual bait and fish feces in the outer filter screen 4 into the second recovery pipe 2 only by gravity, this embodiment makes the recovery process of the residual bait and fish feces more efficient and smooth by using the external force of the second suction pump, and also avoids the situation where the residual bait and fish feces remain in the outer filter screen 4, and there is no need to set a height difference between the two ends of the second recovery pipe 2.

[0066] Further, refer to Figure 3 and Figure 4 In an exemplary embodiment, the ship-type fishery farming system also includes a first fixing plate 12 with a first through hole 121 and a second fixing plate 13 with a second through hole 131; wherein, one side of the first fixing plate 12 is fixed to the bottom of the farming cabin 7 and the first through hole 121 is arranged opposite to the discharge port 71, and the second fixing plate 13 is detachably installed on the other side of the first fixing plate 12 and the second through hole 131 is arranged opposite to the discharge port 71; the inner filter screen 3 and the outer filter screen 4 can both be detachably installed on the second fixing plate 13.

[0067] In this embodiment, the first fixing plate 12 can be fixed to the bottom of the breeding cabin 7 by welding, the tailwater filter device can be detachably connected to the second fixing plate 13 by bolt connection, setting a hook for hanging on the second fixing plate 13, etc., and the first fixing plate 12 and the second fixing plate 13 can be connected by bolts. Specifically, a number of evenly distributed threaded holes can be opened on the first fixing plate 12, and a number of connecting through holes corresponding to the threaded holes can be opened on the second fixing plate 13, and the first fixing plate 12 and the second fixing plate 13 can be quickly threadedly connected by bolts penetrating the connecting through holes and the threaded holes from bottom to top. It should be noted that due to the presence of the first control valve 9, the first fixing plate 12 and the second fixing plate 13 can be detachably connected by indirect connection. Schematically, one side of the first control valve 9 can be fitted with the first fixing plate 12 and the other side can be fitted with the second fixing plate 13, and the second fixing plate 13 can be directly locked to the first fixing plate 12 by bolts. In the specific implementation process, it is only necessary to realize the detachable connection between the first fixing plate 12 and the second fixing plate 13 without affecting the normal operation of the first control valve 9, and the specific connection form is not limited. In this embodiment, by setting the first fixing plate 12 and the second fixing plate 13, the disassembly and assembly between the tailwater filtration device and the bottom of the breeding cabin 7 is more efficient and convenient in a transfer manner.

[0068] Further, refer to Figure 3 and Figure 5 In an exemplary embodiment, a first screw hole (not shown in the figure) is provided on one side surface of the second fixing plate 13, and a first connecting through hole (not shown in the figure) corresponding to the first screw hole is provided on the outer filter screen 4, and the tail water filtering device is detachably connected to the second fixing plate 13 by a first connecting bolt 132 passing through the first connecting through hole and the first screw hole.

[0069] In this embodiment, the first screw hole can be opened on any side surface of the second fixing plate 13, wherein when the first screw hole is opened on a side surface of the second fixing plate 13 facing the first fixing plate 12, the aperture of the first through hole 121 should be larger than the aperture of the second through hole 131, so as to leave an installation position for the bolt at the first screw hole and avoid interference between the bolt and the first fixing plate 12. The tailwater filter device can be directly pressed on the second fixing plate 13 by the first connecting bolt 132, or can be hung on the first connecting bolt 132, as long as the tailwater filter device can be quickly connected and disassembled with the second fixing plate 13.

[0070] Further, refer to Figure 4 and Figure 6In an exemplary embodiment, a second screw hole (not shown in the figure) is provided on the side wall of the second through hole 131, and a second connecting through hole (not shown in the figure) corresponding to the second screw hole is provided on the outer filter screen 4, and the tail water filtering device is detachably connected to the second fixing plate 13 by a second connecting bolt 133 passing through the second connecting through hole and the second screw hole.

[0071] In this embodiment, the tail water filter device can be directly pressed onto the second fixing plate 13 by the second connecting bolt 133, or can be hung on the second connecting bolt 133, as long as the tail water filter device can be quickly connected and disassembled with the second fixing plate 13.

[0072] Further, refer to Figure 3 and Figure 4 In an exemplary embodiment, a water inlet 81 for communicating with an external water body is provided at the bottom of the collecting chamber 8 , and a second control valve 14 is provided at the water inlet 81 .

[0073] In this embodiment, when the pollutants at the bottom of the breeding cabin 7 have basically entered the tailwater filtration device with the breeding water and have been fully filtered, the first control valve 9 needs to be closed to prevent the breeding water from flowing into the tailwater filtration device and interfering with the pollutant recovery process and to avoid the pollutant recovery process disturbing the live fish cultured in the breeding cabin 7. At this time, there is no external water body continuously supplied to the collection cabin 8. With the continuous suction of the first suction pump and the second suction pump, the existing breeding water body in the collection cabin 8 is continuously reduced, and the suction device may eventually dry out and cause damage to the suction device. To solve this problem, this embodiment sets a water inlet 81 at the bottom of the collection cabin 8 to ensure that during the pollutant recovery process, the external water body can be continuously supplied to the collection cabin 8, thereby avoiding the occurrence of dry suction. The second control valve 14 is preferably a gate valve, the valve body of which is arranged at the water outlet 81. The valve body is controlled to be opened or closed by its driving device, thereby controlling whether the inside of the collection chamber 8 is connected to the external water body. Specifically, the second control valve 14 is opened during the pollutant recovery stage and remains closed at other times.

[0074] It should be noted that the second control valve 14 in this embodiment is a valve device that is well known and commonly used by technical personnel in this field, and can specifically be a pneumatic valve, a hydraulic valve, an electric valve, etc., and its specific mechanical structure and the specific implementation method of the opening and closing drive will not be repeated here.

[0075] It should be noted that other contents of the tailwater filtration device and the boat-type fishery breeding system disclosed in the present invention can be found in the prior art and will not be described in detail here.

[0076] In addition, it should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0077] In addition, it should be noted that the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0078] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A boat-type fish farming system, characterized in that: The ship-type fish farming system comprises a farming cabin, a collection cabin and a tail water filtering device, wherein the tail water filtering device comprises a first recovery pipe, a second recovery pipe, an inner filter screen having a first inlet and an outer filter screen having a second inlet; wherein, A discharge port is provided at the bottom of the breeding cabin, and the collecting cabin is arranged below the breeding cabin and is connected with the breeding cabin through the discharge port; The surface of the inner filter is distributed with a plurality of first mesh holes, the surface of the outer filter is distributed with a plurality of second mesh holes, and the aperture of the first mesh holes is larger than the aperture of the second mesh holes; the inner filter is arranged in the inner cavity of the outer filter and connected with the outer filter, the inner filter and the outer filter are both installed at the bottom of the breeding cabin and are both located in the collection cabin, and the first inlet and the second inlet are both arranged opposite to the discharge port, and there is a gap between the bottom of the inner filter and the bottom of the outer filter; the outer filter is provided with air-avoiding through holes, One end of the first recovery pipe passes through the air-avoiding through hole and is connected to the bottom of the inner filter screen, and the other end of the first recovery pipe is connected to a container for storing fish, one end of the first recovery pipe is higher than the other end of the first recovery pipe, and a first valve is provided on the passage of the first recovery pipe; one end of the second recovery pipe is connected to the bottom of the outer filter screen, and the other end of the second recovery pipe is connected to a container for storing residual bait and fish feces, one end of the second recovery pipe is higher than the other end of the second recovery pipe, and a second valve is provided on the passage of the second recovery pipe.

2. The boat-type fish farming system according to claim 1, characterized in that: The bottom surface of the inner filter screen is an inclined surface, and one end of the first recovery pipe is connected to the lower side of the inclined surface.

3. The boat-type fish farming system according to claim 1, characterized in that: A connecting sleeve protruding outward is fixed to the bottom of the outer filter screen, the inner cavity of the connecting sleeve is connected to the inner cavity of the outer filter screen, and one end of the second recovery pipe is detachably connected to the end of the connecting sleeve away from the outer filter screen.

4. The boat-type fish farming system according to claim 1, characterized in that: The bottom surface of the outer filter screen is an arc surface with an opening toward the bottom of the inner filter screen, and one end of the second recovery pipe is connected to the lowest point of the arc surface.

5. The boat-type fish farming system according to claim 1, characterized in that: A first control valve is arranged at the discharge port.

6. The boat-type fish farming system according to claim 1, characterized in that: The tail water filtering device comprises a first suction pump, and the first suction pump is installed on the passage of the first recovery pipe.

7. The boat-type fish farming system according to claim 1, characterized in that: The bottom surface of the inner filter screen is an inclined surface, and one end of the first recovery pipe is connected to the lower side of the inclined surface.

8. The boat-type fish farming system according to claim 1, characterized in that: The tail water filtering device comprises a second suction pump, and the second suction pump is installed on the passage of the second recovery pipe.

9. The boat-type fish farming system according to claim 1, characterized in that: The ship-type fishery breeding system also includes a first fixed plate with a first through hole and a second fixed plate with a second through hole; wherein, one side of the first fixed plate is fixed to the bottom of the breeding cabin and the first through hole is arranged opposite to the discharge port, and the second fixed plate is detachably installed on the other side of the first fixed plate and the second through hole is arranged opposite to the discharge port; the inner filter screen and the outer filter screen can both be detachably installed on the second fixed plate.

10. The ship-type fish farming system according to any one of claims 1 to 9, characterized in that: The bottom of the collecting chamber is provided with a water outlet for communicating with an external water body, and a second control valve is arranged at the water outlet.

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