A sorting device and method for cultured fish populations

Abstract

The present invention provides a sorting device and method for cultured fish groups, belonging to the technical field of aquaculture. Among them, the device includes a culture tank, in which a first sorting component and a second sorting component are sequentially arranged from left to right. The first sorting component and the second sorting component divide the interior of the culture tank into a first cavity, a second cavity, and a third cavity from left to right in sequence. The first sorting component can rotate to open or close a first channel, and the second sorting component can rotate to open or close a second channel; the first sorting component is connected to a first motor that drives it to rotate to open or close the first channel. A large sprocket is arranged on the first sorting component, and a small sprocket is arranged on the second sorting component. The small sprocket and the large sprocket are connected by a chain. The present invention can automatically sort fry groups in the breeding process according to different specifications and sizes, improving the quality of fry cultivation.

Description

Technical Field

[0001] The present invention relates to the technical field of aquaculture, and particularly relates to a device and method for sorting cultured fish groups. Background Art

[0002] The eastern star grouper, scientifically known as Plectropomus leopardus, belongs to the order Perciformes, the family Serranidae, the subfamily Epinephelinae, and the genus Plectropomus. The eastern star grouper has delicate flesh, a delicious taste, and a beautiful red body color all over, with high economic value and ornamental value, and is a precious marine cultured fish. Due to the large market demand, the wild population has decreased significantly due to overfishing, resulting in the eastern star grouper becoming a scarce fish in the market. In recent years, with the breakthrough and development of the artificial breeding technology of the eastern star grouper, the breeding range and scale have gradually expanded.

[0003] The breeding of the eastern star grouper usually starts from the fry cultivation stage. Fry cultivation is not only the first but also the most important and difficult-to-master link in the production of breeding the eastern star grouper. During the fry cultivation process, it is necessary to not only reasonably control the growth temperature and hydrological conditions of the fry, but also timely sort the fry groups of different sizes. When the size differences of the fry are large, if the large fry group and the small fry group are not classified in time, it will lead to the situation that the small fry cannot compete with the strong and healthy fry after feeding, and the small fry will become smaller and smaller, resulting in a large difference in the fry specifications in the final culture tank. In severe cases, it will lead to the death of the small fry. There is no simple and fast sorting device in the existing equipment that can automatically sort the fry groups in the breeding process according to different specifications to improve the quality of fry cultivation. Summary of the Invention

[0004] The present invention aims to at least solve one of the above technical problems in the related art to some extent. For this purpose, the present invention provides a device for sorting cultured fish groups, which realizes automatically sorting the fry groups in the breeding process according to different specifications by simultaneously controlling the first sorting component and the second sorting component to rotate different angles to open channels of different sizes, thereby improving the quality of fry cultivation. [[ID=1,18]]

[0005] The present invention also provides a method for sorting cultured fish groups by using the above device.

[0006] A fish sorting device for aquaculture according to an embodiment of the first aspect of the present invention includes an aquaculture tank. Inside the aquaculture tank, a first sorting component and a second sorting component are sequentially arranged from left to right. The first sorting component and the second sorting component divide the interior of the aquaculture tank into a first cavity, a second cavity, and a third cavity from left to right in sequence. The first sorting component includes a first rotating shaft and a second rotating shaft symmetrically and rotatably connected to the front and rear inner walls of the aquaculture tank. A first motor is arranged at the upper end of the first rotating shaft. A first transmission component for driving the two to rotate synchronously and reversely is connected between the first rotating shaft and the second rotating shaft. A first sorting plate is arranged on the first rotating shaft, and a second sorting plate is arranged on the second rotating shaft. The free ends of the second sorting plate and the first sorting plate are close to each other. The second sorting component includes a third rotating shaft and a fourth rotating shaft symmetrically and rotatably connected to the front and rear inner walls of the aquaculture tank. A second transmission component for driving the two to rotate synchronously and reversely is connected between the third rotating shaft and the fourth rotating shaft. A large sprocket is arranged on the third rotating shaft, and a small sprocket is arranged on the first rotating shaft. The small sprocket and the large sprocket are connected by a chain. A third sorting plate is arranged on the third rotating shaft, and a fourth sorting plate is arranged on the fourth rotating shaft. The free ends of the third sorting plate and the fourth sorting plate are close to each other.

[0007] A fish farming population sorting device according to an embodiment of the present invention has at least the following technical effects: The interior of the breeding tank is divided into a first cavity, a second cavity, and a third cavity from left to right by a first sorting component and a second sorting component. When the fry population is put into the first cavity and during the first-stage cultivation of the fry population (at this time, the first sorting component blocks the first cavity and the second cavity), only feeding the fry in the first cavity for one and a half months, the body sizes of the fry are different, forming a large fry population and a small fry population. Subsequently, start the first motor to rotate forward, drive the first sorting plate and the second sorting plate to rotate a certain angle in the direction of mutual separation through the first transmission component to form a first channel (at this time, the size of the first channel is larger than the size of the small fry but smaller than the size of the large fry). The first channel connects the first cavity and the second cavity to enter the second stage of fry population cultivation. At the same time, feed is put into the first cavity and the second cavity. Since there is feed in the second cavity, the small fry population originally in the first cavity can be automatically attracted to pass through the first channel and enter the second cavity to eat, so that the large fry population in the first cavity continues to be cultured in the first cavity, and the small fry population in the first cavity is sorted into the second cavity for cultivation. At the same time, after feeding the first cavity and the second cavity for one month, the body sizes of the fry in the first cavity and the second cavity are different, forming a large fry population and a small fry population; then start the first motor to continue rotating forward, drive the first sorting plate and the second sorting plate to continue rotating a certain angle in the direction of mutual separation through the first transmission component to expand the first channel (at this time, the size of the first channel is larger than the size of the small fry in the first cavity but smaller than the size of the large fry in the first cavity); since the first rotating shaft and the third rotating shaft are connected by a transmission component composed of a small sprocket, a large sprocket, and a chain, and the small sprocket is connected to the first rotating shaft and the large sprocket is connected to the third rotating shaft, when starting the first motor to rotate forward to drive the first sorting component to open the first channel and expand the first channel, the second sorting component can be driven to open the second channel and expand the second channel at the same time, and the size of the second channel is smaller than the size of the first channel, so that the size of the expanded second channel is larger than the size of the small fry in the second cavity but smaller than the size of the large fry in the second cavity, entering the third stage of fry population cultivation. At the same time, feed is put into the first cavity, the second cavity, and the third cavity. Since there is feed in both the second cavity and the third cavity, the small fry population originally in the first cavity can be automatically attracted to pass through the first channel and enter the second cavity to eat, and the small fry population originally in the second cavity can be automatically attracted to pass through the second channel and enter the third cavity to eat, achieving the purpose of automatically sorting and culturing the fry population in the breeding process according to different specifications, and improving the quality of fry cultivation.

[0008] According to some embodiments of the present invention, the first transmission assembly includes a first gear disposed on the second rotating shaft. The first gear meshes with a second gear, and the second gear and the first gear are of the same type. The second gear is rotatably connected to the left side of the second rotating shaft through a fifth rotating shaft. A first driven pulley is disposed on the fifth rotating shaft. The first driven pulley is connected to a first main pulley through a first synchronous belt, and the first main pulley is connected to the first rotating shaft.

[0009] According to some embodiments of the present invention, the second transmission assembly includes a third gear disposed on the fourth rotating shaft. The third gear meshes with a fourth gear, and the fourth gear and the third gear are of the same type. The fourth gear is rotatably connected to the left side of the fourth rotating shaft through a sixth rotating shaft. A second driven pulley is disposed on the sixth rotating shaft. The second driven pulley is connected to a second main pulley through a second synchronous belt, and the second main pulley is connected to the third rotating shaft.

[0010] According to some embodiments of the present invention, the first driven pulley, the first main pulley, the second driven pulley, and the second main pulley are of the same type.

[0011] According to some embodiments of the present invention, the third sorting plate and the fourth sorting plate are arranged in a ">" shape. Slots are arranged in the vertical direction on the sides of the third sorting plate and the fourth sorting plate facing each other. A partition is detachably inserted between the two slots.

[0012] According to some embodiments of the present invention, the first cavity, the second cavity, and the third cavity are respectively communicated with a first feeding assembly, a second feeding assembly, and a third feeding assembly. The first feeding assembly, the second feeding assembly, and the third feeding assembly have the same structure. The first feeding assembly is provided with a storage bin. The lower outlet of the storage bin is communicated with a feeding bin arranged horizontally. A screw conveyor is arranged in the feeding bin along its length direction. One end of the screw conveyor facing away from the breeding box is connected to a second motor for driving its rotation. The lower end of the feeding bin on the side facing away from the second motor is communicated with a feeding port.

[0013] According to a second aspect of the present invention, an embodiment provides a method for sorting using the device according to any of the above embodiments, including the following steps:

[0014] Step A: Start the first motor to reverse until the free ends of the first sorting plate and the second sorting plate are in mutual contact and the free ends of the third sorting plate and the fourth sorting plate are in mutual contact;

[0015] Step B: Put a set number of fry into the first cavity, and breed the fry by feeding them in the first cavity. After the first cultivation stage time, start the first motor to rotate forward so that the first sorting plate and the second sorting plate rotate a certain angle in the direction of mutual separation to form a first channel and make the third sorting plate and the sorting plate rotate another angle in the direction of mutual separation to form a second channel;

[0016] Step C: Feed the first cavity and the second cavity at the same time, so that the relatively smaller fry group in the first cavity automatically runs into the second cavity. After feeding and breeding for the second cultivation stage time, start the first motor to rotate forward so that the first sorting plate and the second sorting plate continue to rotate a certain angle in the direction of mutual separation to expand the first channel and make the third sorting plate and the sorting plate continue to rotate another angle in the direction of mutual separation to expand the second channel. At this time, the size of the second channel is smaller than that of the first channel;

[0017] Step D: Feed the first cavity, the second cavity and the third cavity at the same time, which can not only make the relatively smaller fry group in the first cavity automatically run into the second cavity to eat, but also make the relatively smaller fry group in the second cavity automatically run into the third cavity to eat. After feeding and breeding for the third cultivation stage time, high-quality fry groups can be sorted out.

[0018] A sorting method according to an embodiment of the present invention has at least the following technical effects: After the first cultivation stage, the body sizes of the fry in the first cavity are different, forming a large fry group and a small fry group. Before entering the second cultivation stage, the first motor is started to rotate forward, and the first sorting plate and the second sorting plate are driven by the first transmission component to rotate a certain angle in the direction of mutual separation to form a first channel (at this time, the size of the first channel is larger than the size of the small fry but smaller than the size of the large fry). The first channel connects the first cavity and the second cavity. In the second cultivation stage, feed is simultaneously fed into the first cavity and the second cavity. Since there is feed in the second cavity, the small fry group originally in the first cavity can be automatically attracted to pass through the first channel and enter the second cavity to eat, and the large fry group in the first cavity continues to be cultured in the first cavity, realizing the sorting of fry groups of different specifications and sizes and culturing them in the corresponding cavities; After the second cultivation stage, the body sizes of the fry in the first cavity and the second cavity are different, each forming a large fry group and a small fry group; Before entering the third cultivation stage, the first motor is started to continue rotating forward to drive the first sorting plate and the second sorting plate to continue rotating a certain angle in the direction of mutual separation to expand the first channel (at this time, the size of the first channel is larger than the size of the small fry in the first cavity but smaller than the size of the large fry in the first cavity); At the same time, since the first rotating shaft and the third rotating shaft are connected by a transmission component composed of a small sprocket, a large sprocket and a chain, and the small sprocket is connected to the first rotating shaft and the large sprocket is connected to the third rotating shaft, when the first motor is started to rotate forward to drive the first sorting component to open the first channel and expand the first channel, the second sorting component can be driven to open the second channel and expand the second channel, and the size of the second channel is smaller than the size of the first channel, so that the size of the expanded second channel is larger than the size of the small fry in the second cavity but smaller than the size of the large fry in the second cavity; In the third cultivation stage, feed is simultaneously fed into the first cavity, the second cavity and the third cavity. Since there is feed in both the second cavity and the third cavity, the small fry group originally in the first cavity can be automatically attracted to pass through the first channel and enter the second cavity to eat, and the small fry group originally in the second cavity can be automatically attracted to pass through the second channel and enter the third cavity to eat, achieving the purpose of automatically sorting and culturing fry groups of different specifications and sizes during the cultivation process and improving the quality of fry cultivation.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following further describes the present invention with reference to the drawings and embodiments, where:

[0021] Figure 1 is a schematic structural view of the embodiment of the present invention in the first cultivation stage;

[0022] Figure 2 is an enlarged schematic view of part A in Figure 1;

[0023] Figure 3 is a schematic structural view of the embodiment of the present invention in the second cultivation stage;

[0024] Figure 4 is a schematic structural view of the embodiment of the present invention in the third cultivation stage;

[0025] Figure 5 is a schematic structural view of the first feeding component in the embodiment of the present invention.

[0026] Reference numerals: 100 breeding box, 110 first cavity, 120 second cavity, 130 third cavity; 210 first rotating shaft, 220 second rotating shaft, 230 first sorting plate, 240 second sorting plate, 250 first channel; 310 third rotating shaft, 320 fourth rotating shaft, 330 third sorting plate, 340 fourth sorting plate, 350 slot, 360 partition board, 370 second channel; 410 large sprocket, 420 small sprocket, 430 chain; 510 first gear, 520 second gear, 530 fifth rotating shaft, 540 first driven pulley, 550 first synchronous belt, 560 first main pulley; 610 third gear, 620 fourth gear, 630 sixth rotating shaft, 640 second driven pulley, 650 second synchronous belt; 710 first feeding component, 711 storage box, 712 feeding bin, 713 screw conveyor, 714 second motor, 715 feeding port, 720 second feeding component, 730 third feeding component. Detailed Description of the Invention

[0027] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The function of the accompanying drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0028] In the description of the present invention, it should be understood that for the orientation description, such as "upper", "lower", "front", "rear", "left", "right", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0029] In the description of the present invention, if there are descriptions such as "first", "second", etc., they are only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0031] Referring to FIGS. 1 to 5, a fish farming sorting device according to an embodiment of the first aspect of the present invention includes a breeding tank 100. A first sorting component and a second sorting component are sequentially arranged in the breeding tank 100 from left to right. The first sorting component and the second sorting component sequentially divide the interior of the breeding tank 100 into a first cavity 110, a second cavity 120, and a third cavity 130 from left to right. The first sorting component includes a first rotating shaft 210 and a second rotating shaft 220 symmetrically and rotatably connected to the front and rear inner walls of the breeding tank 100. A first motor (not shown in the figure) is provided at the upper end of the first rotating shaft 210. A first transmission component for driving the two to rotate synchronously and in opposite directions is connected between the first rotating shaft 210 and the second rotating shaft 220. A first sorting plate 230 is provided on the first rotating shaft 210, and a second sorting plate 240 is provided on the second rotating shaft 220. The free ends of the second sorting plate 240 and the first sorting plate 230 are close to each other. The second sorting component includes a third rotating shaft 310 and a fourth rotating shaft 320 symmetrically and rotatably connected to the front and rear inner walls of the breeding tank 100. A second transmission component for driving the two to rotate synchronously and in opposite directions is connected between the third rotating shaft 310 and the fourth rotating shaft 320. A large sprocket 410 is provided on the third rotating shaft 310, and a small sprocket 420 is provided on the first rotating shaft 210. The small sprocket 420 and the large sprocket 410 are connected by a chain 430. A third sorting plate 330 is provided on the third rotating shaft 310, and a fourth sorting plate 340 is provided on the fourth rotating shaft 320. The free ends of the third sorting plate 330 and the fourth sorting plate 340 are close to each other.

[0032] Compared with the prior art, in the embodiment of the present invention, the inside of the breeding tank 100 is sequentially divided into a first cavity 110, a second cavity 120, and a third cavity 130 from left to right by the first sorting component and the second sorting component. The fry group is put into the first cavity 110, and during the first-stage cultivation of the fry group (at this time, the first sorting component blocks the first cavity 110 and the second cavity 120), only feeding the fry in the first cavity 110 for one and a half months, the body sizes of the individual fry show differences, forming a large fry group and a small fry group. Subsequently, the first motor is started to rotate forward, and the first sorting plate 230 and the second sorting plate 240 are driven by the first transmission component to rotate a certain angle in the direction of separating from each other to form a first channel 250 (at this time, the size of the first channel 250 is larger than the size of the small fry but smaller than the size of the large fry). The first channel 250 connects the first cavity 110 and the second cavity 120 to enter the second stage of cultivating the fry group. At the same time, feeding is carried out into the first cavity 110 and the second cavity 120. Since there is feed in the second cavity 120, the small fry group originally in the first cavity 110 can be automatically attracted to pass through the first channel 250 and enter the second cavity 120 to eat, so that the large fry group in the first cavity 110 continues to be cultivated in the first cavity 110, and the small fry group in the first cavity 110 is sorted into the second cavity 120 for cultivation. At the same time, after feeding into the first cavity 110 and the second cavity 120 for one month, the body sizes of the individual fry in the first cavity 110 and the second cavity 120 all show differences and each forms a large fry group and a small fry group; then the first motor is started to rotate forward again, and the first sorting plate 230 and the second sorting plate 240 are driven by the first transmission component to rotate a certain angle in the direction of separating from each other to expand the first channel 250 (at this time, the size of the first channel 250 is larger than the size of the small fry in the first cavity 110 but smaller than the size of the large fry in the first cavity 110);Since the first rotating shaft 210 and the third rotating shaft 310 are connected by a transmission assembly composed of a small sprocket 420, a large sprocket 410 and a chain 430, and the small sprocket 420 is connected to the first rotating shaft 210 and the large sprocket 410 is connected to the third rotating shaft 310, when the first motor rotates forward to drive the first sorting component to open the first channel 250 and expand the first channel 250, it can drive the second sorting component to open the second channel 370 and expand the second channel 370 at the same time. Moreover, the size of the second channel 370 is smaller than that of the first channel 250, so that the size of the expanded second channel 370 is larger than the size of the small fry in the second cavity 120 but smaller than the size of the large fry in the second cavity 120, entering the third stage of fry group cultivation. At the same time, feed is put into the first cavity 110, the second cavity 120 and the third cavity 130. Since there is feed in both the second cavity 120 and the third cavity 130, it can not only automatically attract the small fry group originally in the first cavity 110 to pass through the first channel 250 and enter the second cavity 120 to eat, but also automatically attract the small fry group originally in the second cavity 120 to pass through the second channel 370 and enter the third cavity 130 to eat, achieving the purpose of automatically sorting and cultivating the fry group according to different specifications and sizes during the breeding process and improving the quality of fry cultivation.

[0033] As shown in FIG. 1, preferably, the first transmission assembly includes a first gear 510 disposed on the second rotating shaft 220. The first gear 510 meshes with a second gear 520. The second gear 520 and the first gear 510 are of the same type. The second gear 520 is rotatably connected to the left side of the second rotating shaft 220 through a fifth rotating shaft 530. A first driven pulley 540 is disposed on the fifth rotating shaft 530. The first driven pulley 540 is connected to a first main pulley 560 through a first synchronous belt 550. The first main pulley 560 is connected to the first rotating shaft 210. Since the second rotating shaft 220 and the fifth rotating shaft 530 are in meshing transmission through the first gear 510 and the second gear 520, when the first motor drives the first rotating shaft 210 and the fifth rotating shaft 530 to rotate synchronously and in the same direction through the structure composed of the first main pulley 560, the first driven pulley 540 and the first synchronous belt 550, the fifth rotating shaft 530 and the second rotating shaft 220 are driven to rotate synchronously and in the opposite direction through the meshing relationship between the first gear 510 and the second gear 520. Furthermore, it is realized that the first rotating shaft 210 and the second rotating shaft 220 are driven to rotate synchronously and in the opposite direction under the drive of the first motor, so that when the first motor rotates forward, the first sorting plate 230 and the second sorting plate 240 are driven to rotate a certain angle in the direction of separating from each other to form a first channel 250.

[0034] Preferably, the second transmission assembly includes a third gear 610 disposed on the fourth rotating shaft 320. The third gear 610 meshes with a fourth gear 620. The fourth gear 620 and the third gear 610 are of the same type. The fourth gear 620 is rotatably connected to the left side of the fourth rotating shaft 320 through a sixth rotating shaft 630. A second driven pulley 640 is disposed on the sixth rotating shaft 630. The second driven pulley 640 is connected to a second main pulley through a second synchronous belt 650. The second main pulley is connected to the third rotating shaft 310. Since the fourth rotating shaft 320 and the sixth rotating shaft 630 are in meshing transmission through the third gear 610 and the fourth gear 620, when the first motor drives the third rotating shaft 310 and the sixth rotating shaft 630 to rotate synchronously and in the same direction through the structure composed of the second main pulley, the second driven pulley 640 and the second synchronous belt 650, the sixth rotating shaft 630 and the fourth rotating shaft 320 are driven to rotate synchronously and in the opposite direction through the meshing relationship between the third gear 6 of and the fourth gear 620. Furthermore, it is realized that the third rotating shaft 310 and the fourth rotating shaft 320 are driven to rotate synchronously and in the opposite direction under the drive of the first motor, so that when the first motor rotates forward, the third sorting plate 330 and the fourth sorting plate 340 are driven to rotate a certain angle in the direction of separating from each other to form a second channel 370.

[0035] Further preferably, the first driven pulley 540, the first main pulley 560, the second driven pulley 640 and the second main pulley adopt the same pulley. In this way, there is no need to distinguish the four types of pulleys during installation, and the assembly is convenient.

[0036] As shown in FIGS. 1 and 3, preferably, the third sorting plate 330 and the fourth sorting plate 340 are arranged in a ">" shape. On the sides of the third sorting plate 330 and the fourth sorting plate 340 facing each other, slots 350 are arranged in the up and down direction. A partition plate 360 is detachably inserted between the two slots 350. Before entering the second cultivation stage, start the first motor to rotate forward, drive the first sorting plate 230 and the second sorting plate 240 to rotate a certain angle in the direction of separating from each other through the first transmission assembly to form the first channel 250, and at the same time drive the third sorting plate 330 and the fourth sorting plate 340 to rotate another angle in the direction of separating from each other to form the second channel 370. The second channel 370 connects the second cavity 120 and the third cavity 130. In order to prevent the small fry group entering the second cavity 120 from the first cavity 110 from entering the third cavity 130 during the second cultivation stage and affecting the cultivation quality, insert a partition plate 360 between the two slots 350 to block the second cavity 120 and the third cavity 130 during the second cultivation stage.

[0037] As shown in FIGS. 1 and 5, preferably, the first cavity 110, the second cavity 120 and the third cavity 130 are respectively connected to a first feeding component 710, a second feeding component 720 and a third feeding component 730; the first feeding component 710, the second feeding component 720 and the third feeding component 730 adopt the same structure. The first feeding component 710 is provided with a storage box 711. The lower outlet of the storage box 711 is connected to a feeding bin 712 arranged horizontally. A screw conveyor 713 is arranged in the feeding bin 712 along the length direction of the feeding bin 712. One end of the screw conveyor 713 facing away from the breeding tank 100 is connected to a second motor 714 that drives the screw conveyor 713 to rotate. One side of the lower end of the feeding bin 712 facing away from the second motor 714 is connected to a feeding port 715. By correspondingly connecting a feeding component in each cavity, it is realized to control the corresponding feeding component to automatically feed into the corresponding cavity at different cultivation stages, further improving the feeding efficiency; also, by arranging a screw conveyor 713 in the feeding bin 712, the phenomenon of blockage during the feeding process can be effectively prevented through the conveying of the screw conveyor 713, and the function of automatic feeding is realized, with a high degree of automation.

[0038] Referring to FIGS. 1 to 5, a method for sorting cultured fish groups using the device according to the embodiment of the second aspect of the present invention, which applies the device according to the embodiment of the first aspect, includes the following steps:

[0039] Step A: Start the first motor to reverse until the free ends of the first sorting plate 230 and the second sorting plate 240 are in contact with each other and the free ends of the third sorting plate 330 and the fourth sorting plate 340 are in contact with each other, blocking the communication between the first cavity 110, the second cavity 120, and the third cavity 130;

[0040] Step B: Put a set number of fry into the first cavity 110 and feed the fry in the first cavity 110. After passing through the first cultivation stage (such as one and a half months), start the first motor to rotate forward so that the first sorting plate 230 and the second sorting plate 240 rotate a certain angle in the direction of separating from each other to form a first channel 250, and the third sorting plate 330 and the sorting plate rotate another angle in the direction of separating from each other to form a second channel 370, and then enter the second cultivation stage;

[0041] Step C: In the second cultivation stage, feed the first cavity 110 and the second cavity 120 at the same time, so that the relatively smaller fry group in the first cavity 110 automatically runs into the second cavity 120. After feeding and cultivating for the second cultivation stage (such as one month), start the first motor to rotate forward so that the first sorting plate 230 and the second sorting plate 240 continue to rotate a certain angle in the direction of separating from each other to expand the first channel 250, and the third sorting plate 330 and the sorting plate continue to rotate another angle in the direction of separating from each other to expand the second channel 370. At this time, the size of the second channel 370 is smaller than the size of the first channel 250, and then enter the third cultivation stage;

[0042] Step D: In the third cultivation stage, feed the first cavity 110, the second cavity 120, and the third cavity 130 at the same time, so that the relatively smaller fry group in the first cavity 110 can automatically run into the second cavity 120 to eat, and the relatively smaller fry group in the second cavity 120 can automatically run into the third cavity 130 to eat. After feeding and cultivating for the third cultivation stage (such as one month), high-quality fry groups can be sorted.

[0043] Compared with the prior art, in the embodiment of the present invention, after the first cultivation stage, the body sizes of the fry in the first cavity 110 are different, forming a large fry group and a small fry group. Before entering the second cultivation stage, the first motor is started to rotate forward, and the first sorting plate 230 and the second sorting plate 240 are driven by the first transmission component to rotate a certain angle in the direction of separating from each other to form a first channel 250 (at this time, the size of the first channel 250 is larger than the size of the small fry but smaller than the size of the large fry). The first channel 250 connects the first cavity 110 and the second cavity 120. In the second cultivation stage, feeding is carried out by simultaneously feeding the first cavity 110 and the second cavity 120. Since there is feed in the second cavity 120, the small fry group originally in the first cavity 110 can be automatically attracted to pass through the first channel 250 and enter the second cavity 120 to eat, and the large fry group in the first cavity 110 continues to be cultured in the first cavity 110, realizing the sorting of fry groups of different specifications and sizes and culturing them in the corresponding cavities; after the second cultivation stage, the body sizes of the fry in the first cavity 110 and the second cavity 120 are different, respectively forming a large fry group and a small fry group; before entering the third cultivation stage, the first motor is started to rotate forward continuously to drive the first sorting plate 230 and the second sorting plate 240 to rotate a certain angle in the direction of separating from each other to expand the first channel 250 (at this time, the size of the first channel 250 is larger than the size of the small fry in the first cavity 110 but smaller than the size of the large fry in the first cavity 110); at the same time, since the first rotating shaft 210 and the third rotating shaft 310 are connected by a transmission component composed of a small sprocket 420, a large sprocket 410 and a chain 430, and the small sprocket 420 is connected to the first rotating shaft 210 and the large sprocket 410 is connected to the third rotating shaft 310, so when the first motor is started to rotate forward to drive the first sorting component to open the first channel 250 and expand the first channel 250, the second sorting component can be driven to open the second channel 370 and expand the second channel 370, and the size of the second channel 370 is smaller than the size of the first channel 250, so that the size of the expanded second channel 370 is larger than the size of the small fry in the second cavity 120 but smaller than the size of the large fry in the second cavity 120;In the third cultivation stage, feed is simultaneously input into the first cavity 110, the second cavity 120, and the third cavity 130. Since there is feed in both the second cavity 120 and the third cavity 130, it can automatically attract the small fry group originally in the first cavity 110 to enter the second cavity 120 through the first channel 250 for feeding, and can also automatically attract the small fry group originally in the second cavity 120 to enter the third cavity 130 through the second channel 370 for feeding, achieving the purpose of automatically sorting and cultivating the fry group in the breeding process according to different specifications and sizes, and improving the quality of fry cultivation.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sorting device for cultured fish groups, characterized in that, It includes a breeding box, in which a first sorting component and a second sorting component are sequentially arranged from left to right. The first sorting component and the second sorting component divide the interior of the breeding box into a first cavity, a second cavity and a third cavity from left to right in sequence; the first sorting component includes a first rotating shaft and a second rotating shaft symmetrically and rotatably connected to the front and rear inner walls of the breeding box. A first motor is arranged at the upper end of the first rotating shaft. A first transmission component for driving the two to rotate synchronously and reversely is connected between the first rotating shaft and the second rotating shaft; a first sorting plate is arranged on the first rotating shaft, and a second sorting plate is arranged on the second rotating shaft. The free ends of the second sorting plate and the first sorting plate are close to each other; the second sorting component includes a third rotating shaft and a fourth rotating shaft symmetrically and rotatably connected to the front and rear inner walls of the breeding box. A second transmission component for driving the two to rotate synchronously and reversely is connected between the third rotating shaft and the fourth rotating shaft. A large sprocket is arranged on the third rotating shaft, and a small sprocket is arranged on the first rotating shaft. The small sprocket and the large sprocket are connected by a chain; a third sorting plate is arranged on the third rotating shaft, and a fourth sorting plate is arranged on the fourth rotating shaft. The free ends of the third sorting plate and the fourth sorting plate are close to each other; the third sorting plate and the fourth sorting plate are arranged in a ">" shape, and slots are arranged in the up and down direction on the side of the third sorting plate and the fourth sorting plate facing each other. A partition plate is detachably inserted between the two slots.

2. The sorting device for cultured fish groups according to claim 1, wherein The first transmission component includes a first gear arranged on the second rotating shaft. The first gear meshes with a second gear. The second gear and the first gear are of the same type. The second gear is rotatably connected to the left side of the second rotating shaft through a fifth rotating shaft. A first driven pulley is arranged on the fifth rotating shaft. The first driven pulley is connected to a first main pulley through a first synchronous belt. The first main pulley is connected to the first rotating shaft.

3. The sorting device for cultured fish groups according to claim 2, characterized in that, The second transmission component includes a third gear arranged on the fourth rotating shaft. The third gear meshes with a fourth gear. The fourth gear and the third gear are of the same type. The fourth gear is rotatably connected to the left side of the fourth rotating shaft through a sixth rotating shaft. A second driven pulley is arranged on the sixth rotating shaft. The second driven pulley is connected to a second main pulley through a second synchronous belt. The second main pulley is connected to the third rotating shaft.

4. The sorting device for cultured fish groups according to claim 3, wherein The first driven pulley, the first main pulley, the second driven pulley and the second main pulley are of the same type of pulley.

5. The sorting device for cultured fish groups according to claim 1, characterized in that, The first cavity, the second cavity and the third cavity are respectively connected to the first feeding assembly, the second feeding assembly and the third feeding assembly; the first feeding assembly, the second feeding assembly and the third feeding assembly adopt the same structure, the first feeding assembly is provided with a storage box, the lower end outlet of the storage box is connected to a horizontally arranged feeding bin, a screw conveyor is arranged in the feeding bin along its length direction, the end of the screw conveyor away from the breeding box is connected to a second motor that drives it to rotate, and the lower end of the feeding bin away from the second motor is connected to a feeding port.

6. A method for sorting using the device according to any one of claims 1 to 5, characterized in that The following steps are involved: Step A: starting the first motor to rotate in reverse until the free ends of the first sorting plate and the second sorting plate abut against each other and the free ends of the third sorting plate and the fourth sorting plate abut against each other; Step B: placing a set number of fry into the first cavity and cultivating the fry by feeding feed into the first cavity for a first cultivation period; starting the first motor to rotate forward so that the first sorting plate and the second sorting plate rotate in a direction of separation by a certain angle to form a first channel, and rotating the third sorting plate and the fourth sorting plate in a direction of separation by another angle to form a second channel; Step C: Feed is fed into the first cavity and the second cavity simultaneously, so that the relatively small fry in the first cavity automatically run into the second cavity. After the second incubation period of feeding and breeding, the first motor is started to rotate forward so that the first sorting plate and the second sorting plate are moved in a direction of separation and then rotated by a certain angle to expand the first channel, and the third sorting plate and the fourth sorting plate are moved in a direction of separation and then rotated by another angle to expand the second channel. At this time, the size of the second channel is smaller than the size of the first channel. Step D: Feeding feed into the first cavity, the second cavity and the third cavity at the same time can make the relatively small fry in the first cavity automatically run to the second cavity to feed, and can also make the relatively small fry in the second cavity automatically run to the third cavity to feed. In this way, high-quality fry can be sorted after the third cultivation stage.

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