A feeding device and feeding method for offshore cage aquaculture

Abstract

A feeding device and feeding method for offshore cage aquaculture, comprising: an operating boat, a feeding center is arranged on the operating boat, a throwing device is arranged on one side of the feeding center, the throwing device is connected to the feeding center through a pipeline, and the problem of uneven feeding and excessive feeding waste occurring during the feeding process of the feeding device can be solved.

Description

Technical Field

[0001] The invention belongs to the field of marine product breeding, and particularly relates to an offshore cage feeding device and a feeding method. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present application and does not constitute prior art.

[0003] At present, the development speed of shallow-water enclosure and cage aquaculture in Zhejiang and Fujian is very fast. However, the feeding process is still based on traditional manual feeding. It is impossible to feed directly on the operating boat. Workers need to carry the compound feed to the deep-water cage operating table and pour it into the cage. There are several problems with this operation method: 1. The waves in the sea area are large, and it is inconvenient for workers to stand on the cage platform to operate. At the same time, the unstable center of gravity increases the risk of falling into the water; 2. Now the cages are getting bigger and bigger, and the common circumference sizes are 60, 90, and the largest is 388 meters. In this way, the feeding method of dumping the cage at one time cannot be evenly sprinkled in the middle of the cage; 3. The dumped feed is easy to run out of the cage with the water flow and waves on one side, and the fish in the cage cannot eat the feed. At the same time, too much feed is wasted in the ocean, causing unnecessary pollution.

[0004] Existing patents provide certain solutions, such as patent US20200022333A1 live bait automatic feeding machine, which can achieve timed feeding and reduce the labor intensity of workers. However, the device is unstable under sea conditions and waves, the device is easily damaged, requires regular maintenance, has high maintenance costs, and the feed cannot be stored for a long time. The feeding is uneven and the feed is easily lost with the waves. Here, the inventor believes that there is still a lot of room for improvement.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Summary of the invention

[0006] In order to solve the problem of uneven feeding and excessive feeding waste in the feeding process of the above-mentioned feeding device, the present invention provides a feeding device and a feeding method for offshore cage aquaculture.

[0007] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a feeding device and feeding method for offshore cage aquaculture, comprising: an operating boat, a feeding center is provided on the operating boat, a throwing device is provided on one side of the feeding center, the throwing device is connected to the feeding center through a pipeline, the throwing device comprises a first throwing base, a feeding pipe is provided at the center of the first throwing base, one end of the first throwing base is fixedly connected to the second throwing base, a plurality of rubber blades are arranged around the outer circular wall surface of the first throwing base, the rubber blades are wing-shaped, one end of the rubber blades is fixedly connected to the second floating ring, the second floating ring is a disc structure with an opening in the center, the second floating ring has a step structure, and a plurality of elastic members are fixedly connected to the wall surface below the second floating ring.

[0008] It is worth mentioning that the loose displacement of the feed pipe can be buffered by the sliding block and the spring; since the feed is moved in the conveying pipe by wind conveying, the feed pipe may have a certain bend when the feed is conveyed to the buffer base sleeve by wind, and the feed may move slower here, causing blockage in the pipe. The displacement of the spring and the sliding block inside the buffer base sleeve can drive the conveying pipe to move up and down, so as to promote the displacement of the material in the pipe and avoid the blockage of the material in the pipe. At the same time, since the buffer base sleeve is connected to the parts of the feeding pipe, the sinking and floating of the parts of the feeding pipe in the water can drive the buffer base sleeve to move up and down. The up and down displacement of the sleeve swings, and then the up and down displacement force is transmitted to the sliding block to further enhance the shaking effect on the material in the tube and promote the displacement of the material in the tube; since the feeding pipe is connected to the feeding center on the ship, the ship will produce a certain displacement when it stays on the water surface, and then the distance between the throwing device and the feeding center may be shortened or expanded, which will have a certain pulling effect on the feeding pipe. By designing components such as sliding blocks and springs in the buffer base sleeve to buffer the pulling, it is avoided that the pulling force is too large, which may cause the connection between the buffer base sleeve and the feeding pipe to break and cause feed leakage, thereby reducing the chance of maintenance.

[0009] According to one embodiment of the present invention, the first material-throwing base is a cylindrical structure with a through hole in the center, the first material-throwing base includes a buffer base sleeve, a groove is provided on the top of the buffer base sleeve, a disc with a central opening is provided below the groove of the buffer base sleeve, a material delivery pipe is provided inside the buffer base sleeve, a sliding block is provided on the outside of the material delivery pipe, the size of the protruding part of the sliding block is adapted to the groove, one end of the sliding block is fixedly connected to a spring, one end of the spring is fixedly connected to the surface of the disc in the buffer base sleeve, a threaded sleeve is provided below the disc of the buffer base sleeve, and the threaded sleeve is used to connect the second material-throwing base.

[0010] Furthermore, the second throwing material base includes a first feeding pipe, the outer side of the first feeding pipe is provided with a thread for fixed connection with the buffer base sleeve, the first feeding pipe has a central opening, one end of the first feeding pipe is provided with a notch, the notch is provided with a first floating ring, a throwing material tube body is provided below the first floating ring, a second feeding pipe is provided in the throwing material tube body, one end of the second feeding pipe is provided with a rotating part, one end of the throwing material tube body is fixedly connected to an annular mesh, and one end of the annular mesh is fixedly connected to a floating base. The throwing material tube body floats on the water surface through the first floating ring and the second floating ring. The first and second floating rings control the position of the throwing material device in the water to further control the feeding range, so that the material is thrown in the central position of the cage, the utilization rate of the bait is improved, and the possibility of the bait floating out of the cage is reduced.

[0011] Furthermore, a plurality of supporting links are fixedly connected around the outer wall of the rotating part, one end of the supporting links is fixedly connected to the feeding pipe, one end of the rotating part is rotatably connected to the bearing ring, the bearing ring is fixedly connected to the second feeding pipe, a diverter shaft is provided at one end of the rotating part, a plurality of swing blades are fixedly connected to the diverter shaft, a plurality of supporting links are fixedly connected around the outer wall of the rotating part, one end of the supporting links is fixedly connected to the bearing ring, the bearing ring is fixedly connected to the feeding pipe, a diverter shaft is provided at one end of the rotating part, a plurality of swing blades are fixedly connected to the diverter shaft.

[0012] Furthermore, one end of the rotating member is fixedly connected to the rotating disk, the upper part of the rotating disk is a claw disk structure, the lower part is a disc structure, and through holes are opened at the centers of the upper and lower parts. One end of the rotating disk is rotatably connected to the diversion shaft.

[0013] A rotating part is arranged at the discharge port of the feeding pipe and a diverter shaft is arranged correspondingly under the rotating part, so that when the material from the outlet end of the feeding pipe passes through the rotating part, the supporting connecting rod connected to the rotating part is driven to rotate, so that the material falls into the water in a rotating manner. Further rotation of the supporting connecting rod further drives the rotation of the diverter shaft and drives the rotation of the swing blade. In the process of the material rotating and falling, the annular mesh provided under the throwing tube body further limits the downward movement range of the material to prevent the material from moving quickly outside the bait casting box.

[0014] Furthermore, the rotating part realizes the feeding of materials in a rotating direction and does not require additional electric energy or other drives to realize the feeding of materials in a rotating manner. In this way, the time for materials to fall in the water in a rotating manner can be extended, thereby preventing the materials from sinking quickly to the bottom and reducing the probability of being ingested by organisms in the box. The rotary falling materials are dispersed from the range of the throwing tube body to the surroundings through the action of the supporting connecting rod and the swinging blades, thereby avoiding the situation where fish gather and damage young fish due to excessive concentration of bait, and is also conducive to uniform feeding and relatively uniform feeding of fish. The diverter shaft is arranged at the outlet end of the feeding tube to realize the central stability of the throwing tube body and reduce its shaking on the water surface.

[0015] According to one embodiment of the present invention, the bait throwing center includes a bait throwing shell, a through hole is provided at the bottom of the bait throwing shell, a motor is fixedly provided at the through hole, one end of the motor is connected to a rotating rod, a second filter is sleeved on the rotating rod, a protective shell is sleeved on the outer side of the rotating rod, the protective shell is hollow inside, and a bait outlet is provided at a corner, the second filter is fixedly connected to the inner wall of the protective shell, a bait throwing device is abutted at one end of the protective shell, an opening is provided at the abutment between the protective shell and the bait throwing device, a first filter is fixedly connected to the input end of the bait throwing device, one end of the first filter is fixedly connected to a rotating baffle, the rotating baffle includes a fixed shaft, a plurality of plates are rotatably connected to the fixed shaft, the fixed shaft is arranged above the bait throwing device, one end of the rotating baffle plate abuts against the bait throwing shell, and a bait throwing outlet is provided on one side of the rotating baffle plate.

[0016] When the bait is poured into the feeding center, the bait accumulates at the rotating baffle, which is provided with an opening. The bait further slides to the entrance of the end cover. The first filter screen is a soft net and the mesh size is just enough to block the bait. When too much bait is poured in, the rotating baffle rotates and tilts to make the excess bait accumulate on one side, avoiding the clogging of the pipeline by the bait and the waste caused by excessive feeding. In addition, when the bait at the end cover is finished, the excess bait accumulates at the baffle on the other side, and the rotating baffle is pushed by the pull rod on the outside to make the excess bait enter the feeding device. After entering the feeding device, it leaks out from the screen at the bottom of the feeding device after screening and enters the second filter screen. The mesh size of the second filter screen is slightly larger than the size of the bait, and the filter screen is provided with a rotating shaft of a rotating rod. The boss provided above the rotating shaft can prevent the bait inside the filter screen from accumulating at the bottom of the filter screen and prevent the bait from clogging the mesh.

[0017] Furthermore, the feeding device includes an end cover, a feeding tube is provided at one end of the end cover, a through hole is opened in the center of the feeding tube, a rotating rod is provided at one end of the end cover, a plurality of openings are evenly distributed on the surface of the rotating rod, a plurality of stirring rods are evenly distributed on the surface of the rotating rod, the stirring rods are axially arranged at the intervals of the openings, a rotating bin is sleeved on the outer side of the rotating rod, a plurality of protrusions are provided in the rotating bin, one end of the rotating bin is fixedly connected to the end cover, one end of the rotating bin is fixedly connected to a screen, one end of the screen is fixedly connected to a filter bin, a rotating cylinder is provided in the filter bin and a filter is provided at the bottom.

[0018] When the bait enters the feeding device, part of the bait can enter from the center of the rotating rod. A convex body is provided inside the rotating rod. Under the rotation of the rotating rod, the bait is spilled from the through hole on its surface. The rotating rod rotates so that the bait grinds against the protrusions on the surface of the rotating rod and the protrusions in the rotating bin, so that the bait can be bonded into a ball, the size of which is just the size of the filter mesh, and can be easily blown, thereby increasing the diffusion speed of the bait in the seawater and the food coverage rate. The lumped bait falls into the protective shell by gravity, and is hit by the rotating rod and discharged from the bait outlet and falls into the throwing device. In addition, the vibration caused by the rotating rod rotating and grinding the bait inside can cause the bait at the screen and the filter bin to be discharged. The rotating rod can rotate relative to the rotating bin, and the poured bait fills the rotating bin. During operation, the agglomerated bait is further squeezed into the through hole on the rotating rod, so that the air inside the bait is squeezed out, making the bait more compact and preventing it from quickly dispersing after entering the water. At the same time, since the actual feeding process is not limited to one type of feed, the device can also mix different baits together and stir them evenly. The rotating rod rotates to make the bait powder roll between the protrusions in the rotating bin to promote the powder in the feed to leak through the screen, so that the bait can form agglomerations with as little powder as possible, which is conducive to the transmission of the bait by the fan. When the bait enters the water, it will expand evenly, and the fine particles in it will dissolve and fall off to form a mist-like area, which prevents it from quickly dispersing and failing to effectively attract fish to come and eat. Furthermore, the rotating rod rotates and hits the bait, which can prevent the phenomenon of adhesion caused by water seepage between the baits when the bait is left standing. The fan is located inside the feeding center and is set on one side of the motor. When the fan is working, it will blow the channel at the bait outlet, and the channel at the bait outlet is connected to the feed pipe. The rotating rod can sweep the bait into the outlet pipe, and under the action of the fan blowing, a negative pressure environment is easily formed in the pipe. The bait is affected by the pressure and is more likely to enter the outlet pipe. The wind pressure provided by the fan can cause the bait in the pipe to be discharged smoothly and quickly, thus avoiding the bait from sticking in the pipe.

[0019] Compared with the prior art, the present invention has the following technical effects: the rotating part realizes the feeding of materials in a rotating direction and the feeding of materials in a rotating manner can be realized without the need for additional electric energy or the like to drive the feeding, so that the time for the materials to fall in the water in a rotating manner can be prolonged, thereby avoiding the materials from sinking quickly to the bottom and reducing the probability of being ingested by the organisms in the box; the rotating material dropping is realized by the supporting connecting rod and the swinging blades to spread out from the range of the throwing tube body to the surrounding areas, thereby avoiding the situation where the bait is too concentrated and causes the gathering of fish schools and damages young fish, etc., and is also conducive to uniform feeding and relatively uniform feeding of fish; the diversion shaft is arranged at the outlet end of the feeding tube to realize the central stability of the throwing tube body and reduce its shaking on the water surface; the feeding device causes the bait to agglomerate, and the rotating rod rotates to cause the bait powder to roll between the protrusions in the rotating bin to slow down the falling speed of the powder, so that the bait powder can agglomerate as completely as possible, and at the same time, the force between the powders causes the powder to slightly heat up, which improves the water absorption and atomization efficiency of the bait. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a feeding device for offshore cage aquaculture involved in the present invention;

[0021] Figure 2 It is a structural schematic diagram of the throwing device involved in the present invention;

[0022] Figure 3 This is a schematic diagram of the feeding pipe structure involved in the present invention;

[0023] Figure 4 It is a schematic diagram of the internal structure of the throwing device involved in the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the rotating part involved in the present invention;

[0025] Figure 6 It is a schematic diagram of the turntable connection structure involved in the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the bait feeding center involved in the present invention;

[0027] Figure 8 This is a schematic diagram of the internal structure of the bait feeding center involved in the present invention;

[0028] Fig. 9 It is a schematic structural diagram of the bait feeding device involved in the present invention.

[0029] Reference numerals: 1-operating boat; 2-throwing device; 3-feeding center; 4-net cage;

[0030] 21-feeding pipe; 22-first throwing material base; 23-second throwing material base; 24-rubber blade; 25-second floating ring; 26-elastic member;

[0031] 221-buffer base sleeve; 222-sliding block; 223-spring; 231-first feeding pipe; 232-first floating ring; 233-throwing pipe body; 234-second feeding pipe; 235-rotating member; 236-bearing ring; 237-support connecting rod; 238-diverter shaft; 239-swinging blade; 235A-rotating disk;

[0032] 31-feeding shell; 32-feeding port; 33-rotating baffle; 34-first filter; 35-feeding device; 351-end cover; 352-rotating rod; 353-rotating chamber; 354-screen; 355-filter chamber; 361-protective shell; 362-second filter; 37-rotating rod; 38-motor; 39-fan. Specific implementation plan

[0033] Embodiment 1:

[0034] Reference Figure 1 As shown in FIG. 2 , a bait throwing center 3 is provided on the working boat 1, and a throwing device 2 is provided on one side of the bait throwing center 3. The throwing device 2 is connected to the bait throwing center 3 through a pipeline, and the throwing device 2 includes a first throwing base 22, a feeding pipe 21 is provided at the center of the first throwing base 22, one end of the first throwing base 22 is fixedly connected to the second throwing base 23, and a plurality of rubber blades 24 are arranged around the outer circular wall surface of the first throwing base 22, and the rubber blades 24 are wing-shaped, and one end of the rubber blades 24 is fixedly connected to the second floating ring 25, the second floating ring 25 is a disc structure and has an opening in the center, the second floating ring 25 has a step structure, and a plurality of elastic members 26 are fixedly connected to the wall surface below the second floating ring 25.

[0035] It is worth mentioning that the loose displacement of the feed pipe 21 can be buffered by the sliding block 222 and the spring 223; since the feed is moved in the delivery pipe by wind conveying, when the feed is conveyed to the buffer base sleeve 221 by wind, the feed pipe 21 may have a certain bending, and the feed may slow down here and cause blockage in the pipe. The displacement of the spring 223 and the sliding block 222 inside the buffer base sleeve 221 can drive the delivery pipe 21 to move up and down, so as to promote the displacement of the material in the pipe and avoid the blockage of the material in the pipe. At the same time, since the buffer base sleeve 221 is connected to the parts of the feeding pipe 231, the floating of the parts of the feeding pipe 231 in the water can drive the buffer base sleeve 221 to move up and down. The up and down displacement of the impact sleeve 221 is swung, and the up and down displacement force is transmitted to the sliding block 222 to further enhance the shaking effect on the material in the tube and promote the displacement of the material in the tube; since the feed pipe 21 is connected to the feeding center 3 on the ship, the ship will produce a certain displacement when it stays on the water surface, and the distance between the throwing device 2 and the feeding center 3 may be shortened or expanded, which will have a certain pulling effect on the feed pipe 21. By designing components such as the sliding block 222 and the spring 223 in the buffer sleeve 221 to buffer the pulling, it is avoided that the pulling force is too large, resulting in the breakage of the connection between the buffer sleeve 221 and the feeding pipe 231, causing feed leakage, and the probability of maintenance can be reduced.

[0036] Reference Figure 2 As shown in Figures 3 and 4, the first material-throwing base 22 is a cylindrical structure with a through hole in the center. The first material-throwing base 22 includes a buffer base sleeve 221, a groove is provided on the top of the buffer base sleeve 221, and a disk with a central opening is provided below the groove of the buffer base sleeve 221. A feed pipe 21 is provided inside the buffer base sleeve 221, and a sliding block 222 is provided on the outside of the feed pipe 21. The size of the protruding part of the sliding block 222 is adapted to the groove. One end of the sliding block 222 is fixedly connected to a spring 223, and one end of the spring 223 is fixedly connected to the surface of the disk in the buffer base sleeve 221. A threaded sleeve is provided below the disk of the buffer base sleeve 221, and the threaded sleeve is used to connect the second material-throwing base 23.

[0037] Furthermore, the second throwing material base 23 comprises a first feeding pipe 231, the outer side of the first feeding pipe 231 is provided with a thread for fixed connection with the buffer base sleeve 221, the first feeding pipe 231 has a central opening, one end of the first feeding pipe 231 is provided with a notch, the notch is provided with a first floating ring 232, a throwing material pipe body 233 is provided below the first floating ring 232, a second feeding pipe 234 is provided inside the throwing material pipe body 233, one end of the second feeding pipe 234 is provided with a rotating member 235, one end of the throwing material pipe body 233 is fixedly connected to an annular mesh 241, and one end of the annular mesh 241 is fixedly connected to a floating base 251. The throwing material pipe body 233 floats on the water surface through the first floating ring 232 and the second floating ring 25, and the first and second floating rings control the position of the throwing material device 2 in the water to further control the feeding range, so that the material is thrown in the central position of the cage, the utilization rate of the bait is improved, and the possibility of the bait floating out of the cage by water waves is reduced.

[0038] Embodiment 2:

[0039] Reference Figure 5 , as shown in FIG6 , a plurality of supporting links 237 are fixedly connected around the outer wall of the rotating member 235, one end of the supporting links 237 is fixedly connected to the feeding pipe 234, one end of the rotating member 235 is rotatably connected to the bearing ring 236, the bearing ring 236 is fixedly connected to the second feeding pipe 234, a diversion shaft 238 is provided at one end of the rotating member 235, a plurality of swing blades 239 are fixedly connected to the diversion shaft 238, a plurality of supporting links 237 are fixedly connected around the outer wall of the rotating member 235, one end of the supporting links 237 is fixedly connected to the bearing ring 236, the bearing ring 236 is fixedly connected to the feeding pipe 234, a diversion shaft 238 is provided at one end of the rotating member 235, a plurality of swing blades 239 are fixedly connected to the diversion shaft 238.

[0040] Furthermore, one end of the rotating member 235 is fixedly connected to the rotating disk 235A, the upper part of the rotating disk 235A is a claw disk structure, the lower part is a disc structure, and through holes are opened at the center of the upper and lower parts. One end of the rotating disk 235A is rotatably connected to the diversion shaft 238.

[0041] A rotating part 235 is provided at the discharge port of the feeding pipe 231, and a diverter shaft 238 is correspondingly provided below the rotating part 235, so that when the material from the outlet end of the feeding pipe 231 passes through the rotating part 235, the supporting connecting rod 237 connected to the rotating part 235 is driven to rotate, so that the material falls into the water in a rotating manner. The further rotation of the supporting connecting rod 237 further drives the rotation of the diverter shaft 238 and drives the rotation of the swing blade 239. In the process of the material rotating and falling, the annular mesh 241 provided below the throwing tube body 233 further limits the downward movement range of the material to prevent the material from moving quickly outside the bait casting box.

[0042] Furthermore, the rotating member 235 realizes feeding of materials in a rotating direction and does not require additional electric energy or other drives to realize feeding of materials in a rotating manner. In this way, the time for materials to fall in the water in a rotating manner can be extended, thereby preventing the materials from sinking quickly to the bottom and decreasing the chance of being ingested by organisms in the box. The rotating material falling is dispersed from the range of the throwing tube body 233 to the surroundings through the action of the supporting connecting rod 237 and the swinging blade 239, thereby avoiding situations where excessive concentration of bait causes fish to gather and damage young fish, and is also conducive to uniform feeding and relatively uniform feeding of fish. The diverter shaft 238 is arranged at the outlet end of the feeding tube 231 to achieve the central stability of the throwing tube body 233 and reduce its shaking on the water surface.

[0043] Embodiment 3:

[0044] Reference Figure 7 , 8,9, the bait throwing center 3 includes a bait throwing shell 31, the bottom of the bait throwing shell 31 is provided with a through hole, the through hole is fixedly provided with a motor 38, one end of the motor 38 is connected to a rotating rod 37, the rotating rod 37 is sleeved with a second filter 362, the outer side of the rotating rod 37 is sleeved with a protective shell 361, the protective shell 361 is hollow inside, and a bait outlet is provided at a corner, the inner wall of the protective shell 361 is fixedly connected to the second filter 362, and one end of the protective shell 361 A bait throwing device 35 is abutted against it, and an opening is provided at the abutment between the protective shell 361 and the bait throwing device 35. The input end of the bait throwing device 35 is fixedly connected with a first filter screen 34, and one end of the first filter screen 34 is fixedly connected to a rotating baffle 33. The rotating baffle 33 includes a fixed shaft, and a plurality of plates are rotatably connected to the fixed shaft. The fixed shaft is arranged above the bait throwing device 35, and one end of the rotating baffle 33 abuts against the bait throwing shell 31, and a bait throwing port 32 is opened on one side of the rotating baffle 33.

[0045] When the bait is poured into the feeding center 3, the bait accumulates at the rotating baffle 33, which is provided with an opening, and the bait further slides to the entrance of the end cover 351. The first filter screen 34 is a soft net and the mesh size is just enough to block the bait; when too much bait is poured, the rotating baffle 33 rotates and dumps to make the excess bait accumulate on one side, avoiding the bait from clogging the pipeline and wasting the bait caused by excessive feeding. In addition, when the bait at the end cover 351 is finished, the excess bait accumulates at the baffle on the other side, and the rotating baffle 33 is pushed by the pull rod on the outside to make the excess bait enter the feeding device 35. After entering the feeding device 35, it leaks out from the screen at the bottom of the feeding device 35 after screening, and enters the second filter screen 362. The mesh size of the second filter screen 362 is slightly larger than the size of the bait, and the filter screen is provided with a rotating shaft of a rotating rod 37, and the boss provided above the rotating shaft can prevent the bait inside the filter screen from accumulating at the bottom of the filter screen, preventing the bait from clogging the mesh.

[0046] Furthermore, the feeding device 35 includes an end cover 351, one end of which is provided with a feeding tube, a through hole is opened in the center of the feeding tube, one end of the end cover 351 is provided with a rotating rod 352, a plurality of openings are evenly distributed on the surface of the rotating rod 352, a plurality of stirring rods are evenly distributed on the surface of the rotating rod 352, the stirring rods are axially arranged at the intervals of the openings, a rotating bin 353 is sleeved on the outer side of the rotating rod 352, a plurality of protrusions are provided in the rotating bin 353, one end of the rotating bin 353 is fixedly connected to the end cover 351, one end of the rotating bin 353 is fixedly connected to the screen 354, one end of the screen 354 is fixedly connected to the filter bin 355, a rotating cylinder is provided in the filter bin 355 and a filter is provided at the bottom.

[0047] When the bait enters the bait throwing device 35, part of the bait can enter from the center of the rotating rod 352. The rotating rod 352 is provided with a convex body. Under the rotation of the rotating rod 352, the bait is spilled from the through hole on its surface. The rotating rod 352 rotates so that the bait grinds between the protrusions provided on the surface of the rotating rod 352 and the protrusions in the rotating bin 353, so that the bait can be bonded into a ball, the size of which is just the size of the filter mesh, and can be easily blown, thereby increasing the diffusion speed of the bait in the seawater and the food coverage rate. The balled bait falls into the protective shell 361 by gravity, and is hit by the rotating rod 37 and discharged from the bait outlet and falls into the throwing device 2. In addition, the vibration caused by the rotating rod 352 rotating and grinding the bait inside can promote the discharge of the bait at the screen 354 and the filter bin 355. The rotating rod 352 can rotate relative to the rotating bin 353, and the poured bait fills the rotating bin 353. During operation, the agglomerated bait is further squeezed into the through hole on the rotating rod 352, so that the air inside the bait is squeezed out, making the bait more compact and preventing it from quickly dispersing after entering the water. At the same time, since the actual feeding process is not limited to one type of feed, the device can also mix different baits together and stir them evenly. The rotating rod 352 rotates to make the bait powder roll between the protrusions in the rotating bin 353 to promote the powder in the feed to leak through the screen, so that the bait can form agglomerations with as little powder as possible, which is conducive to the transmission of the bait by the fan. When the bait enters the water, it will expand evenly, and the fine particles therein will dissolve and fall off to form a mist-like area, preventing it from quickly dispersing and failing to effectively attract fish to come and eat. Further, the rotating rod 37 rotates and hits the bait, which can prevent the phenomenon of moisture seeping out and adhesion between the baits due to the bait being left still.

[0048] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the inventive concept, and these all belong to the protection scope of the invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A feeding device for offshore cage aquaculture, characterized in that: The device comprises: An operating boat (1), wherein the operating boat (1) is provided with a feeding center (3), a throwing device (2) is provided on one side of the feeding center (3), a net cage (4) is provided on the outer side of the throwing device (2), and the throwing device (2) is connected to the feeding center (3) via a pipeline. The throwing device (2) comprises a first throwing base (22), a feeding pipe (21) is provided at the center of the first throwing base (22), one end of the first throwing base (22) is fixedly connected to a second throwing base (23), a plurality of rubber blades (24) are arranged around the outer circular wall surface of the first throwing base (22), the rubber blades (24) are wing-shaped, one end of the rubber blades (24) is fixedly connected to a second floating ring (25), the second floating ring (25) is a disc structure with an opening at the center, the second floating ring (25) has a step structure, and a plurality of elastic members (26) are fixedly connected to the lower wall surface of the second floating ring (25); The first material throwing base (22) is a cylindrical structure with a through hole at the center. The first material throwing base (22) comprises a buffer base sleeve (221). A groove is provided at the top of the buffer base sleeve (221). A disk with a central opening is provided below the groove of the buffer base sleeve (221). A material conveying pipe (21) is provided inside the buffer base sleeve (221). A sliding block (222) is sleeved on the outside of the material conveying pipe (21). The size of the protruding portion of the sliding block (222) matches the groove. One end of the sliding block (222) is fixedly connected to a spring (223). One end of the spring (223) is fixedly connected to the surface of the disk in the buffer base sleeve (221). A threaded sleeve is provided below the disk of the buffer base sleeve (221). The threaded sleeve is used to connect to the second material throwing base (23). The second material throwing base (23) comprises a first feeding pipe (231), the outer side of the first feeding pipe (231) is provided with a thread for fixed connection with the buffer base sleeve (221), the first feeding pipe (231) is centrally opened, one end of the first feeding pipe (231) is provided with a notch, a first floating ring (232) is provided at the notch, a material throwing pipe body (233) is provided below the first floating ring (232), a second feeding pipe (234) is provided inside the material throwing pipe body (233), one end of the second feeding pipe (234) is provided with a rotating part (235), one end of the material throwing pipe body (233) is fixedly connected to an annular mesh (241), and one end of the annular mesh (241) is fixedly connected to a floating base (251).

2. The offshore cage aquaculture feeding device according to claim 1, characterized in that: The outer wall of the rotating member (235) is fixedly connected to a plurality of supporting connecting rods (237), one end of the supporting connecting rod (237) is fixedly connected to the second feeding pipe (234), one end of the rotating member (235) is rotatably connected to a bearing ring (236), the bearing ring (236) is fixedly connected to the second feeding pipe (234), and one end of the rotating member (235) is provided with a flow diversion shaft (238), and a plurality of swing blades (239) are fixedly connected to the flow diversion shaft (238).

3. The offshore cage aquaculture feeding device according to claim 2, characterized in that: One end of the rotating member (235) is connected to a rotating disk (235A), a through hole is provided at the center of the rotating disk (235A), and one end of the rotating disk (235A) is rotatably connected to a diversion shaft (238).

4. The offshore cage aquaculture feeding device according to claim 1, characterized in that: The bait throwing center (3) comprises a bait throwing shell (31), a through hole is formed at the bottom of the bait throwing shell (31), a motor (38) is fixedly provided at the through hole, one end of the motor (38) is connected to a rotating rod (37), a second filter screen (362) is sleeved on the rotating rod (37), a protective shell (361) is sleeved on the outer side of the rotating rod (37), the protective shell (361) is hollow inside and a bait outlet is provided at a corner, the inner wall of the protective shell (361) is fixedly connected to the second filter screen (362), and one end of the protective shell (361) abuts against the second filter screen (362). A bait throwing device (35) is provided, wherein an opening is provided at abutment between the protective shell (361) and the bait throwing device (35), a first filter screen (34) is fixedly connected to an input end of the bait throwing device (35), one end of the first filter screen (34) is fixedly connected to a rotating baffle (33), the rotating baffle (33) comprises a fixed shaft, a plurality of plates are rotatably connected to the fixed shaft, the fixed shaft is provided above the bait throwing device (35), one end of the plate body of the rotating baffle (33) abuts against the bait throwing shell (31), and a bait throwing opening (32) is provided on one side of the rotating baffle (33).

5. The offshore cage aquaculture feeding device according to claim 4, characterized in that: The feeding device (35) comprises an end cover (351), one end of which is provided with a feeding tube, the center of which is provided with a through hole, one end of which is provided with a rotating rod (352), a surface of which is provided with a plurality of openings, a surface of which is provided with a plurality of stirring rods, the stirring rods being axially arranged at intervals between the openings, a rotating bin (353) being sleeved on the outer side of the rotating rod (352), a plurality of protrusions being arranged in the rotating bin (353), one end of which is fixedly connected to the end cover (351), one end of which is fixedly connected to a screen (354), one end of which is fixedly connected to a filter bin (355), a filter being arranged at the bottom of the filter bin (355).

6. A method for feeding offshore cage aquaculture, characterized in that: The feeding method uses an offshore cage aquaculture feeding device as claimed in any one of claims 4 to 5, and the feeding method has the following steps: Step 1) Pour the prepared bait into the feeding port at the feeding center; Step 2) When the bait further falls into the bait throwing device, the bait throwing device and the rotating rod rotate to drive the bait to leave the bait throwing center and enter the throwing device; Step 3) The bait is thrown into the water by the rotating parts in the throwing device to complete the feeding.

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