Cultivation cabin fish disease monitoring device based on cultivation work ship and use method thereof

Abstract

The invention relates to the technical field of culture cabin fish disease monitoring, and discloses a culture cabin fish disease monitoring device based on a culture work ship, the culture cabin fish disease monitoring device comprises a pedestal and a ladder assembly, a sampling rod is movably inserted on the ladder assembly, the outer side wall of the sampling rod is provided with two positioning grooves, and the top end of the sampling rod is fixedly provided with a first gear; a supporting rod frame is fixedly mounted on the inner wall of the pedestal, a rotating groove is formed in the supporting rod frame, and a vortex generating mechanism for a sampling rod is arranged in the rotating groove; the intercepted and captured potential disease source fishes are caught, and the intercepted and captured potential disease source fishes can be conveniently fished up and subjected to disease detection through the catching opening in the ladder frame, so that the fishes suffering from potential disease sources in the culture cabin of the culture work ship are quickly screened out from fish schools and subjected to disease detection in time; and the condition that the diseases of the fishes suffering from potential disease sources in the culture cabin rapidly spread in the fish school due to untimely detection is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fish disease monitoring in aquaculture tanks, and in particular to a fish disease monitoring device in aquaculture tanks based on aquaculture workboat and a use method thereof. Background Art

[0002] Aquaculture vessels are special vessels used for large-scale aquaculture in oceans or inland waters. They are usually equipped with multiple culture chambers for breeding fish, shellfish or other aquatic products. These culture chambers are usually closed cages or similar containers that can accommodate a large number of aquatic organisms and provide a suitable growth environment.

[0003] The existing aquaculture ship breeding cabin (whose authorization announcement number is: CN217284483U) is usually used for large-scale aquaculture. The intensive breeding environment easily leads to the rapid spread of fish diseases. Therefore, it is necessary to screen out fish with potential disease sources from the fish school as soon as possible, and monitor the disease source of the screened fish. Due to the large number of fish in the breeding cabin, it is not convenient to quickly screen out fish with potential disease sources from the fish school. Once the fish disease occurs, it will spread rapidly, affecting the health of a large number of fish in the breeding cabin of the aquaculture ship, and may even cause large-scale fish deaths. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a fish disease monitoring device in a culture chamber based on a culture vessel and a method of using the device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A fish disease monitoring device for aquaculture tanks based on aquaculture vessels comprises a pedestal and a ladder frame, wherein a sampling rod is movably inserted on the ladder frame, two positioning grooves are provided on the outer wall of the sampling rod, a first gear is fixedly installed on the top of the sampling rod, a support rod frame is fixedly installed on the inner wall of the pedestal, a rotating groove is provided in the support rod frame, a vortex generating mechanism for the sampling rod is provided in the rotating groove, a rotation driving mechanism for the first gear is provided on the ladder frame, a sleeve is movably sleeved on the sampling rod, a truncated cone-shaped net frame is fixedly installed on the sleeve, a plurality of fishing nets are provided in the truncated cone-shaped net frame, two trawl ropes are connected to the sleeve, and a winding and unwinding mechanism for the two trawl ropes is provided on the ladder frame.

[0007] As a further solution of the present invention, the vortex generating mechanism includes a swivel, a connecting plate and a propeller, a swivel is rotatably installed in the swivel groove, a plurality of connecting plates are fixedly installed on the top side of the swivel, and the same propeller is fixedly installed on the top side of the plurality of connecting plates; by rotatably setting the propeller in the pedestal, when the propeller rotates, a vortex is generated in the pedestal of the breeding cabin, healthy fish in the breeding cabin will swim against the direction of the vortex of the water, and fish with potential sources of disease will swim slower and will be screened and sucked into the vortex.

[0008] As a further solution of the present invention, the inner wall of the propeller is provided with two positioning convex plates, and the two positioning convex plates on the propeller are respectively inserted into the corresponding positioning grooves on the outer wall of the sampling rod, so as to facilitate the insertion connection between the sampling rod and the propeller.

[0009] As a further solution of the present invention, the rotation drive mechanism includes a mounting plate, a first motor and a second gear. The mounting plate is fixedly installed on the top side of the ladder frame, the first motor is fixedly installed on the top side of the mounting plate, the second gear is fixedly installed on the output shaft of the first motor, and the second gear is meshed with the first gear at the top end of the sampling rod; when the first motor is started, the sampling rod drives the propeller to rotate, causing a vortex to be generated in the pedestal of the breeding cabin, and healthy fish in the breeding cabin will swim against the direction of the vortex of the water, while fish with potential sources of disease will swim slower and will be screened and sucked into the vortex.

[0010] As a further solution of the present invention, a plurality of sampling cavities are respectively provided in the sampling rod, a circular hole is provided on one side of the plurality of sampling cavities, and a sealing mechanism for the plurality of sampling cavities is provided on the sampling rod; through the sampling cavities of different depths in the sampling rod, it is convenient to sample the water quality at different depths in the breeding cabin of the breeding ship, and it is convenient to monitor the water temperature, pH value, dissolved oxygen, ammonia nitrogen, nitrite, hydrogen sulfide and other water quality indicators of the water at different depths in the breeding cabin, which can help judge whether the water environment is suitable for fish growth, thereby avoiding fish diseases caused by water quality problems.

[0011] As a further scheme of the present invention, the sealing mechanism includes a circular plate, a sealing plug, a connecting rod, a spring, a mounting groove and a first sealing ring. Sealing plugs are movably installed in multiple sampling cavities. A circular plate is provided at the top of the sampling rod, one end of the connecting rod is fixedly installed at the bottom end of the circular plate, the other end of the connecting rod movably extends into the sampling rod and is respectively fixedly connected to multiple sealing plugs, one end of the spring is fixedly installed on the bottom side of the circular plate, the other end of the spring is fixedly installed on the top of the sampling rod, an mounting groove is provided on the outer surface of the sealing plug, a first sealing ring is provided in the mounting groove, and the outer side wall of the first sealing ring is sealingly fitted on one side of the circular hole; the sealing mechanism can be used to seal or open the circular hole on the sampling rod.

[0012] As a further solution of the present invention, a plurality of second sealing rings are arranged in the sampling rod, and the second sealing rings are sealingly attached to the connecting rod, thereby ensuring the sealing between the plurality of sampling cavities.

[0013] As a further solution of the present invention, the reeling and winding mechanism includes a vertical plate, a rotating rod, a rope-taking wheel, a third gear and a second motor, a plurality of vertical plates are fixedly installed on the top sides of the ladder frame, the same rotating rod is rotatably installed on two corresponding vertical plates, a rope-taking wheel and a third gear are fixedly installed on the two rotating rods, two trawl ropes are wound around the corresponding rope-taking wheels, the two third gears are meshed with each other, a second motor is fixedly installed on one side of the corresponding vertical plate, and an output shaft of the second motor is fixedly installed on one end of the corresponding rotating rod; the reeling and winding operation of the trawl rope can be realized through the reeling and winding mechanism.

[0014] As a further solution of the present invention, two rope holes and a catching port are respectively provided on the ladder frame, and the two trawl ropes pass through the corresponding rope holes respectively. A plurality of connecting ropes are connected between the truncated cone-shaped net frame and the sleeve; the stability of the connection between the truncated cone-shaped net frame and the sleeve is improved by the plurality of connecting ropes.

[0015] The method for using the fish disease monitoring device in the aquaculture cabin based on an aquaculture vessel comprises the following steps:

[0016] S1: When the truncated cone-shaped net frame and the fishing net need to be dropped against the inclined inner wall of the pedestal, the second motor is started to drive the third gear on the corresponding rotating rod to rotate. Since the two third gears are meshed, the two rope-collecting wheels are synchronously driven to rotate in opposite directions, so that the trawl ropes wound on the two rope-collecting wheels are synchronously unwound, so that the sleeve sleeved on the sampling rod, the truncated cone-shaped net frame and the fishing net fall against the inclined inner wall of the pedestal;

[0017] S2: When it is necessary to screen out fish with potential disease sources from the fish school in the breeding cabin of the breeding ship, the first motor is started to make the sampling rod drive the propeller to rotate in the pedestal, so that a vortex is generated in the pedestal of the breeding cabin. The healthy fish in the breeding cabin will swim against the direction of the vortex of the water, and the fish with potential disease sources will be screened and sucked into the vortex because of their slower swimming speed. The screened out fish with potential disease sources are intercepted and captured by multiple fishing nets on the frustum-shaped net frame;

[0018] S3: When it is necessary to catch the potential disease source fish intercepted and captured in the multiple fishing nets on the truncated cone net frame, the second motor is driven in reverse to make the two rope reeling wheels synchronously reel in the two trawl ropes in opposite directions, so that the potential disease source fish intercepted and captured in the multiple fishing nets on the truncated cone net frame are caught, and the intercepted potential disease source fish can be conveniently scooped up through the catching opening on the ladder frame and subjected to disease detection;

[0019] S4: When it is necessary to sample the water quality at different depths in the aquaculture cabin of the aquaculture vessel, the circular plate is pulled upward to pull the sealing plug on the connecting rod to slide upward in the corresponding sampling cavity on the sampling rod. At this time, the spring is deformed and compressed by force, so that the multiple circular holes on the sampling rod are opened, and the water quality at different depths in the aquaculture cabin of the aquaculture vessel is sampled through the multiple sampling cavities of different depths on the sampling rod;

[0020] S5: When the sampling rod is removed from the ladder, it is convenient to extract the water sampled at different depths in the breeding cabin and monitor the water quality, thereby facilitating the monitoring of water temperature, pH value, dissolved oxygen, ammonia nitrogen, nitrite, hydrogen sulfide and other water quality indicators at different depths in the breeding cabin, which can help determine whether the water environment is suitable for fish growth, thereby avoiding fish diseases caused by water quality problems.

[0021] The beneficial effects of the present invention are:

[0022] 1. When it is necessary to screen out the fish with potential disease sources in the breeding cabin of the breeding ship from the fish school, by starting the first motor, the sampling rod drives the propeller to rotate in the pedestal, so that a vortex is generated in the pedestal of the breeding cabin, and the healthy fish in the breeding cabin will swim against the vortex direction of the water, and the fish with potential disease sources will be screened and sucked into the vortex because of their slow swimming speed. The screened fish with potential disease sources are intercepted and captured by multiple fishing nets on the frustum-shaped net frame, and the two trawl ropes are synchronously reeled in by the two rope reeling wheels in opposite directions through the reeling and unreeling mechanism to catch the intercepted and captured fish with potential disease sources, and the intercepted and captured fish with potential disease sources can be conveniently scooped up and tested for diseases through the catching port on the ladder frame, thereby realizing the rapid screening of the fish with potential disease sources in the breeding cabin of the breeding ship from the fish school and timely testing for diseases, reducing the occurrence of the rapid spread of diseases in the fish with potential disease sources in the breeding cabin due to untimely detection, and ensuring the health of a large number of fish in the breeding cabin of the breeding ship.

[0023] 2. The water quality at different depths in the breeding cabin of the breeding ship can be sampled through multiple sampling cavities of different depths on the sampling rod. After sampling the water quality at different depths in the breeding cabin of the breeding ship, the sampling rod is moved out to facilitate the extraction of the water quality at different depths in the breeding cabin sampled by the sampling rod and water quality monitoring, thereby facilitating the monitoring of water temperature, pH value, dissolved oxygen, ammonia nitrogen, nitrite, hydrogen sulfide and other water quality indicators at different depths in the breeding cabin, which can help determine whether the water environment is suitable for fish growth, thereby avoiding fish diseases caused by water quality problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the three-dimensional viewing angle of the present invention;

[0025] Figure 2It is a schematic diagram of the structure of the present invention in a planar cross-section;

[0026] Figure 3 It is a schematic diagram of the structure of a partial cross-section of the present invention;

[0027] Figure 4 For the present invention Figure 3 The structural diagram of part A in the figure;

[0028] Figure 5 For the present invention Figure 3 The structural diagram of part B;

[0029] Figure 6 It is a structural schematic diagram of a partial cross-section of the ladder frame of the present invention;

[0030] Figure 7 It is a structural schematic diagram of a partial cross-section of the sampling rod of the present invention;

[0031] Figure 8 It is a structural schematic diagram of a partial cross-section of the sleeve of the present invention;

[0032] Fig. 9 It is a structural schematic diagram of a partial cross-section of the pedestal of the present invention;

[0033] Fig.10 For the present invention Fig. 9 Schematic diagram of the structure of part C.

[0034] In the figure: 1, pedestal; 2, ladder frame; 3, sampling rod; 4, positioning groove; 5, first gear; 6, support rod frame; 7, rotating groove; 8, swivel; 9, connecting plate; 10, propeller; 11, positioning convex plate; 12, mounting plate; 13, first motor; 14, second gear; 15, sampling chamber; 16, round hole; 17, round plate; 18, sealing plug; 19, connecting rod; 20, spring; 21, mounting groove; 22, first sealing ring; 23, second sealing ring; 24, sleeve; 25, truncated cone-shaped net frame; 26, fishing net; 27, vertical plate; 28, rotating rod; 29, rope wheel; 30, third gear; 31, trawl rope; 32, second motor; 33, rope hole; 34, catching mouth; 35, connecting rope. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] Reference Figure 1-10 The invention discloses a fish disease monitoring device for aquaculture tanks based on aquaculture vessels, comprising a pedestal 1 and a ladder frame 2, a sampling rod 3 is movably inserted on the ladder frame 2, two positioning grooves 4 are provided on the outer wall of the sampling rod 3, a first gear 5 is fixedly installed on the top of the sampling rod 3, a supporting rod frame 6 is fixedly installed on the inner wall of the pedestal 1, a rotating groove 7 is provided in the supporting rod frame 6, a vortex generating mechanism for the sampling rod 3 is provided in the rotating groove 7, a rotating driving mechanism for the first gear 5 is provided on the ladder frame 2, a sleeve 24 is movably sleeved on the sampling rod 3, a truncated cone-shaped net frame 25 is fixedly installed on the sleeve 24, a plurality of fishing nets 26 are provided in the truncated cone-shaped net frame 25, two trawl ropes 31 are connected to the sleeve 24, and a winding and unwinding mechanism for the two trawl ropes 31 is provided on the ladder frame 2.

[0038] In this embodiment, the vortex generating mechanism includes a swivel 8, a connecting plate 9 and a propeller 10. The swivel 8 is rotatably installed in the rotating groove 7, and multiple connecting plates 9 are fixedly installed on the top side of the swivel 8, and the same propeller 10 is fixedly installed on the top side of the multiple connecting plates 9. The propeller 10 is rotatably arranged in the pedestal 1. When the propeller 10 rotates, a vortex is generated in the pedestal 1 of the breeding cabin. Healthy fish in the breeding cabin will swim against the direction of the vortex of the water, and fish with potential sources of disease will swim slower and will be screened and sucked into the vortex.

[0039] In this embodiment, two positioning protrusions 11 are provided on the inner wall of the propeller 10, and the two positioning protrusions 11 on the propeller 10 are respectively inserted into the corresponding positioning grooves 4 on the outer wall of the sampling rod 3, so as to facilitate the insertion connection between the sampling rod 3 and the propeller 10.

[0040] In this embodiment, the rotation drive mechanism includes a mounting plate 12, a first motor 13 and a second gear 14. The mounting plate 12 is fixedly installed on the top side of the ladder frame 2, the first motor 13 is fixedly installed on the top side of the mounting plate 12, and the second gear 14 is fixedly installed on the output shaft of the first motor 13. The second gear 14 is meshed with the first gear 5 at the top end of the sampling rod 3; when the first motor 13 is started, the sampling rod 3 drives the propeller 10 to rotate, so that a vortex is generated in the base 1 of the breeding cabin, and the healthy fish in the breeding cabin will swim against the direction of the vortex of the water, and the fish with potential sources of disease will swim slower and will be screened and sucked into the vortex.

[0041] In this embodiment, a plurality of sampling cavities 15 are respectively provided in the sampling rod 3, a circular hole 16 is provided on one side of the plurality of sampling cavities 15, and a sealing mechanism for the plurality of sampling cavities 15 is provided on the sampling rod 3; through the sampling cavities 15 of different depths in the sampling rod 3, it is convenient to sample the water quality at different depths in the breeding cabin of the breeding ship, and it is convenient to monitor the water temperature, pH value, dissolved oxygen, ammonia nitrogen, nitrite, hydrogen sulfide and other water quality indicators of the water at different depths in the breeding cabin, which can help judge whether the water environment is suitable for fish growth, thereby avoiding fish diseases caused by water quality problems.

[0042] In this embodiment, the blocking mechanism includes a circular plate 17, a sealing plug 18, a connecting rod 19, a spring 20, a mounting groove 21 and a first sealing ring 22. The sealing plugs 18 are movably installed in the multiple sampling chambers 15. The top of the sampling rod 3 is provided with a circular plate 17, and one end of the connecting rod 19 is fixedly installed at the bottom end of the circular plate 17. The other end of the connecting rod 19 movably extends into the sampling rod 3 and is respectively fixedly connected to the multiple sealing plugs 18. One end of the spring 20 is fixedly installed on the bottom side of the circular plate 17, and the other end of the spring 20 is fixedly installed on the top of the sampling rod 3. The outer surface of the sealing plug 18 is provided with a mounting groove 21, and the first sealing ring 22 is provided in the mounting groove 21. The outer wall of the first sealing ring 22 is sealed and fitted on one side of the circular hole 16; the sealing mechanism can be used to seal or open the circular hole 16 on the sampling rod 3.

[0043] In this embodiment, a plurality of second sealing rings 23 are disposed in the sampling rod 3 , and the second sealing rings 23 are sealingly attached to the connecting rod 19 , thereby ensuring the sealing between the plurality of sampling cavities 15 .

[0044] In this embodiment, the winding and unwinding mechanism includes a vertical plate 27, a rotating rod 28, a rope-taking wheel 29, a third gear 30 and a second motor 32. A plurality of vertical plates 27 are fixedly installed on the top side of the ladder frame 2, and the same rotating rod 28 is rotatably installed on two corresponding vertical plates 27. The rope-taking wheel 29 and the third gear 30 are fixedly installed on the two rotating rods 28. Two trawl ropes 31 are wound around the corresponding rope-taking wheels 29, and the two third gears 30 are meshed with each other. A second motor 32 is fixedly installed on one side of the corresponding vertical plate 27, and the output shaft of the second motor 32 is fixedly installed on one end of the corresponding rotating rod 28. The winding and unwinding operation of the trawl rope 31 can be realized through the winding and unwinding mechanism.

[0045] In this embodiment, two rope holes 33 and a catching port 34 are respectively provided on the ladder frame 2, and the two trawl ropes 31 pass through the corresponding rope holes 33 respectively. A plurality of connecting ropes 35 are connected between the truncated cone-shaped net frame 25 and the sleeve 24; the stability of the connection between the truncated cone-shaped net frame 25 and the sleeve 24 is improved by the plurality of connecting ropes 35.

[0046] When in use, the staff inserts the bottom end of the sampling rod 3 into the sleeve 24 and the swivel 8, and presses against the bottom inner wall of the breeding cabin. At this time, the two positioning convex plates 11 on the inner wall of the propeller 10 are respectively embedded in the corresponding positioning grooves 4 on the outer wall of the sampling rod 3, thereby realizing the embedded connection between the sampling rod 3 and the propeller 10. At this time, the first gear 5 at the top of the sampling rod 3 is meshed with the second gear 14 on the first motor 13; when it is necessary to screen the fish with potential disease sources in the breeding cabin of the breeding ship from the fish school, the second motor 32 is started to drive the third gear 30 on the corresponding rotating rod 28 to rotate. Since the two third gears 30 are meshed, the two rope-collecting wheels 29 are synchronously driven to rotate in opposite directions, so that the trawl rope 31 wound on the two rope-collecting wheels 29 is synchronously unwound, so that the sleeve 24, the truncated cone-shaped net frame 25 and the fishing net 26 sleeved on the sampling rod 3 fall and press against the inclined inner wall of the pedestal 1, and the first motor 13 is started to drive the sampling rod 3 to carry The propeller 10 rotates in the pedestal 1, so that a vortex is generated in the pedestal 1 of the breeding cabin. Healthy fish in the breeding cabin will swim against the vortex direction of the water, and fish with potential disease sources will be screened and sucked into the vortex because of their slow swimming speed. The screened fish with potential disease sources are intercepted and captured by the multiple fishing nets 26 on the truncated cone net frame 25, and the two rope-collecting wheels 29 are driven in opposite directions to synchronously reel in the two trawl ropes 31, so that the potential disease source fish intercepted and captured in the multiple fishing nets 26 on the truncated cone net frame 25 are caught, and the intercepted and captured potential disease source fish can be conveniently scooped up and tested for diseases through the catching opening 34 on the ladder frame 2, thereby realizing the rapid screening of fish with potential disease sources in the breeding cabin of the breeding ship from the fish school and timely testing for diseases, reducing the occurrence of the rapid spread of diseases in the fish with potential disease sources in the breeding cabin due to untimely detection, and ensuring the health of a large number of fish in the breeding cabin of the breeding ship.

[0047] By pulling the circular plate 17 upwards, the sealing plugs 18 on the connecting rod 19 are pulled to slide upwards in the corresponding sampling cavities 15 on the sampling rod 3. At this time, the spring 20 is deformed and compressed by the force, so that the multiple circular holes 16 on the sampling rod 3 are opened, and the water quality at different depths in the breeding cabin of the breeding ship is sampled through the multiple sampling cavities 15 of different depths on the sampling rod 3. After sampling the water quality at different depths in the breeding cabin of the breeding ship, the circular plate 17 is loosened to make the multiple sealing plugs 18 on the connecting rod 19 re-block the corresponding circular holes 16, and then the sampling rod 3 is moved out, so that the water quality at different depths in the breeding cabin sampled by the sampling rod 3 is extracted and tested, so as to monitor the water temperature, pH value, dissolved oxygen, ammonia nitrogen, nitrite, hydrogen sulfide and other water quality indicators of the water at different depths in the breeding cabin, which can help judge whether the water environment is suitable for fish growth, thereby avoiding fish diseases caused by water quality problems.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fish disease monitoring device for aquaculture tanks based on aquaculture vessels, comprising a pedestal (1) and a ladder frame (2), characterized in that: A sampling rod (3) is movably inserted on the ladder frame (2), two positioning grooves (4) are provided on the outer side wall of the sampling rod (3), a first gear (5) is fixedly mounted on the top of the sampling rod (3), a support rod frame (6) is fixedly mounted on the inner wall of the pedestal (1), a rotation groove (7) is provided in the support rod frame (6), a vortex generating mechanism for the sampling rod (3) is arranged in the rotation groove (7), a rotation driving mechanism for the first gear (5) is arranged on the ladder frame (2), a sleeve (24) is movably sleeved on the sampling rod (3), a truncated cone-shaped net frame (25) is fixedly mounted on the sleeve (24), a plurality of fishing nets (26) are arranged in the truncated cone-shaped net frame (25), two trawl ropes (31) are connected to the sleeve (24), and a reeling and unwinding mechanism for the two trawl ropes (31) is arranged on the ladder frame (2).

2. The fish disease monitoring device in the aquaculture tank based on the aquaculture vessel according to claim 1 is characterized in that: The vortex generating mechanism comprises a rotating ring (8), a connecting plate (9) and a propeller (10); the rotating ring (8) is rotatably mounted in the rotating groove (7); a plurality of connecting plates (9) are fixedly mounted on the top side of the rotating ring (8); and a same propeller (10) is fixedly mounted on the top sides of the plurality of connecting plates (9).

3. The fish disease monitoring device in the aquaculture tank based on the aquaculture vessel according to claim 2 is characterized in that: The inner wall of the propeller (10) is provided with two positioning convex plates (11), and the two positioning convex plates (11) on the propeller (10) are respectively inserted into corresponding positioning grooves (4) on the outer wall of the sampling rod (3).

4. The fish disease monitoring device for aquaculture tanks based on aquaculture vessels according to claim 1 is characterized in that: The rotation drive mechanism comprises a mounting plate (12), a first motor (13) and a second gear (14); the mounting plate (12) is fixedly mounted on the top side of the ladder frame (2); the first motor (13) is fixedly mounted on the top side of the mounting plate (12); the second gear (14) is fixedly mounted on the output shaft of the first motor (13); and the second gear (14) is meshed with the first gear (5) at the top end of the sampling rod (3).

5. The fish disease monitoring device in the aquaculture tank based on the aquaculture vessel according to claim 4 is characterized in that: A plurality of sampling cavities (15) are respectively provided in the sampling rod (3), a circular hole (16) is provided on one side of the plurality of sampling cavities (15), and a blocking mechanism for the plurality of sampling cavities (15) is provided on the sampling rod (3).

6. The fish disease monitoring device in the aquaculture tank based on the aquaculture vessel according to claim 5 is characterized in that: The blocking mechanism comprises a circular plate (17), a sealing plug (18), a connecting rod (19), a spring (20), a mounting groove (21) and a first sealing ring (22). The sealing plugs (18) are movably mounted in the plurality of sampling chambers (15). The top end of the sampling rod (3) is provided with a circular plate (17). One end of the connecting rod (19) is fixedly mounted on the bottom end of the circular plate (17). The other end of the connecting rod (19) movably extends into the sampling rod (3) and is respectively fixedly connected to the plurality of sealing plugs (18). One end of the spring (20) is fixedly mounted on the bottom side of the circular plate (17). The other end of the spring (20) is fixedly mounted on the top end of the sampling rod (3). The outer surface of the sealing plug (18) is provided with a mounting groove (21). The first sealing ring (22) is arranged in the mounting groove (21). The outer side wall of the first sealing ring (22) is sealingly fitted on one side of the circular hole (16).

7. The fish disease monitoring device in the aquaculture tank based on the aquaculture vessel according to claim 6 is characterized in that: A plurality of second sealing rings (23) are arranged inside the sampling rod (3), and the second sealing rings (23) are sealingly attached to the connecting rod (19).

8. The fish disease monitoring device in the aquaculture tank based on the aquaculture vessel according to claim 1 is characterized in that: The reeling and unreeling mechanism comprises a vertical plate (27), a rotating rod (28), a rope-collecting wheel (29), a third gear (30) and a second motor (32); a plurality of vertical plates (27) are fixedly mounted on the top side of the ladder frame (2); a same rotating rod (28) is rotatably mounted on two corresponding vertical plates (27); a rope-collecting wheel (29) and a third gear (30) are fixedly mounted on the two rotating rods (28); two trawl ropes (31) are wound around the corresponding rope-collecting wheels (29); the two third gears (30) are meshed with each other; a second motor (32) is fixedly mounted on one side of the corresponding vertical plate (27); and an output shaft of the second motor (32) is fixedly mounted on one end of the corresponding rotating rod (28).

9. The fish disease monitoring device in the aquaculture tank based on the aquaculture vessel according to claim 8, characterized in that: The ladder frame (2) is provided with two rope holes (33) and a catching opening (34), and two trawl ropes (31) pass through the corresponding rope holes (33) respectively. A plurality of connecting ropes (35) are connected between the truncated cone-shaped net frame (25) and the sleeve (24).

10. A method for using a fish disease monitoring device in a breeding cabin based on a breeding vessel, using the fish disease monitoring device in a breeding cabin based on a breeding vessel according to any one of claims 1 to 9, comprising the following steps: S1: When it is necessary to drop the truncated cone-shaped net frame (25) and the fishing net (26) onto the inclined inner wall of the pedestal (1), the second motor (32) is started to drive the third gear (30) on the corresponding rotating rod (28) to rotate. Since the two third gears (30) are meshed with each other, the two rope-collecting wheels (29) are synchronously driven to rotate in opposite directions, so that the trawl rope (31) wound on the two rope-collecting wheels (29) is synchronously unwound, so that the sleeve (24) sleeved on the sampling rod (3), the truncated cone-shaped net frame (25) and the fishing net (26) drop onto the inclined inner wall of the pedestal (1); S2: When it is necessary to screen out fish with potential disease sources from the fish school in the breeding cabin of the breeding ship, the first motor (13) is started to drive the sampling rod (3) to drive the propeller (10) to rotate in the base (1), so that a vortex is generated in the base (1) of the breeding cabin. The healthy fish in the breeding cabin will swim against the direction of the vortex, and the fish with potential disease sources will be screened and sucked into the vortex because of their slower swimming speed. The screened fish with potential disease sources are intercepted and captured by a plurality of fishing nets (26) on the truncated cone net frame (25); S3: When it is necessary to catch the potential disease source fish intercepted and captured in the multiple fishing nets (26) on the truncated cone net frame (25), the second motor (32) is driven in reverse, so that the two rope reeling wheels (29) synchronously reel in the two trawl ropes (31) in opposite directions, so that the potential disease source fish intercepted and captured in the multiple fishing nets (26) on the truncated cone net frame (25) are caught, and the intercepted potential disease source fish can be conveniently scooped up through the catching opening (34) on the ladder frame (2) and subjected to disease detection; S4: When it is necessary to sample the water quality at different depths in the aquaculture cabin of the aquaculture vessel, the circular plate (17) is pulled upwards to pull the sealing plug (18) on the connecting rod (19) to slide upwards in the corresponding sampling cavities (15) on the sampling rod (3). At this time, the spring (20) is deformed and compressed by the force, so that the multiple circular holes (16) on the sampling rod (3) are opened, and the water quality at different depths in the aquaculture cabin of the aquaculture vessel is sampled through the multiple sampling cavities (15) of different depths on the sampling rod (3); S5: When the sampling rod (3) is removed from the ladder frame (2), it is convenient to extract the water at different depths in the breeding cabin sampled by the sampling rod (3) and conduct water quality monitoring, thereby facilitating monitoring of water temperature, pH value, dissolved oxygen, ammonia nitrogen, nitrite, hydrogen sulfide and other water quality indicators of the water at different depths in the breeding cabin, which can help determine whether the water environment is suitable for fish growth, thereby avoiding fish diseases caused by water quality problems.

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