阅读说明：本技术 一种便于捕捞的装置及其方法 (Device convenient for fishing and method thereof ) 是由 杨卫荣 于 2021-08-23 设计创作，主要内容包括：本发明的一种便于捕捞的装置及其方法,包括饵料释放箱,捕捞网箱,外围捕捞网架组件,升降装置,支撑架,支撑架架设在捕捞网箱的外侧,支撑架的上方支撑板；升降装置固定在支撑板上；支撑架的上端四周设有漂浮机构；漂浮机构能够使得捕捞装置自动漂浮并维持在水中的平衡状态；供饵装置包括设置在支撑板上的原料箱、固定设于原料箱内部的螺旋输送单元；螺旋输送单元将原料箱的饵料实现间歇式供给。其其结构简单,机械化程度高,能实现快速捕捞,及时进行二次捕捞,可大大减轻劳动强度,提升工作效率。(The invention relates to a device convenient for fishing and a method thereof, comprising a bait releasing box, a fishing net cage, a peripheral fishing net rack component, a lifting device and a support frame, wherein the support frame is erected outside the fishing net cage, and a support plate is arranged above the support frame; the lifting device is fixed on the supporting plate; a floating mechanism is arranged around the upper end of the supporting frame; the floating mechanism can enable the fishing device to automatically float and maintain a balanced state in water; the bait supply device comprises a raw material box arranged on the supporting plate and a spiral conveying unit fixedly arranged in the raw material box; the screw conveying unit realizes intermittent feeding of the bait in the raw material box. Its simple structure, degree of mechanization is high, can realize catching fast, in time carries out the secondary and catches, can alleviate intensity of labour greatly, promotes work efficiency.)

1. The utility model provides a device convenient to catch which characterized in that: the method comprises the following steps:

the bait releasing box is provided with a bait supplying device for continuously supplying bait in the bait releasing box;

the fishing net cages are distributed in a layered manner in an upper-lower structure, and vortex adsorption devices are arranged between the fishing net cages and the bait release boxes; the vortex adsorption device can automatically adsorb the fishes attracted into the bait release box into the fishing net cage in a grading manner;

the peripheral fishing net rack component is arranged on the periphery of the bait release box in a frame mode and is consistent with the area where the fishing net box is arranged in the frame mode; the fishing net rack component comprises at least one lifting net rack piece and a fixed net rack piece; the lifting net frame piece and the fixed net frame piece are matched for use and guide fishes to enter the bait release box;

the lifting device is connected with one end of the lifting net rack piece through a connecting rod, and the lifting net rack piece is lifted in the fishing process;

the support frame is erected outside the fishing net cage, and a support plate is arranged above the support frame; the lifting device is fixed on the supporting plate; a floating mechanism is arranged on the periphery of the upper end of the supporting frame; the floating mechanism can enable the fishing device to automatically float and maintain a balanced state in water;

the bait feeding device comprises a raw material box arranged on the supporting plate and a spiral conveying unit fixedly arranged in the raw material box; the spiral conveying unit realizes intermittent feeding of the bait of the raw material box.

2. A device for facilitating fishing as claimed in claim 1, wherein:

the peripheral fishing net rack component is integrally of a square structure, and the lifting net rack piece is arranged at the corner of the square structure and is of an L-shaped structure; the fixed net rack piece is of a U-shaped structure and forms a gap with the lifting net rack piece;

two positioning blocks are arranged at the L-shaped corner of the lifting net frame piece.

3. A device for facilitating fishing as claimed in claim 2, wherein:

the lifting device comprises a driving motor fixed on the supporting plate, a lead screw fixedly connected with a power shaft of the driving motor, and a transmission nut piece sleeved on the lead screw; one end of the connecting rod is connected to the transmission nut piece, and the other end of the connecting rod is fixedly connected with the positioning block; when the driving motor drives the lead screw to rotate, the lead screw is converted into linear reciprocating motion of the transmission nut piece, and then the transmission nut piece drives the lifting net rack piece to open or close the peripheral fishing net rack component.

4. A device for facilitating fishing as claimed in claim 1, wherein:

the fishing net cage is a square steel structure frame, the top surface and the bottom surface of the fishing net cage are both in a net shape, and the top surface of the fishing net cage is fixedly connected with the bottom surface of the bait release box; the vortex adsorption device is an adsorption pump.

5. A device for facilitating fishing as claimed in claim 1, wherein:

an underwater video camera is arranged on the top surface of the catching net cage and used for shooting the gathering condition of fish and baits in the catching net cage.

6. A device for facilitating fishing as claimed in claim 1, wherein:

a feed inlet is formed in the raw material box and close to the conveying end part of the spiral conveying unit; and bait is conveyed into the catching net cage through the conveying pipe in the feed port, and the intermittent feeding of the bait of the raw material box is realized.

7. A device for facilitating fishing as claimed in claim 6, wherein:

the pipe sections of the conveying pipe, which are positioned in the bait releasing box and the catching net cage, are provided with discharge holes.

8. A method for facilitating fishing, using a device for facilitating fishing according to any of claims 1-7, comprising the steps of:

s100, selecting baits which the caught fishes like to eat according to the ingestion preference characteristics of the caught fishes; selecting the peripheral catching net rack components with corresponding specifications according to the requirements of the body width and the body height of the caught fishes, and installing the peripheral catching net rack components on four side surfaces of the catching net cage;

s200, transporting the selective automatic catching device to a suitable catching area, and placing a mixed solution of bait and seawater in the bait release box to enable the water level of the bait in the bait release box to rise; at the moment, the lifting net rack piece is driven to rise by starting the lifting device, the peripheral fishing net rack component is opened, fish shoals enter the bait release box, and the fishes entering the bait release box are adsorbed into the fishing net cage under the action of the vortex adsorption device;

s300, opening the bait supply device for the first time, releasing bait into a bait release box and a catching net cage, wherein the bait liquid is discharged into the bait release box and the catching net cage through discharge holes to attract fishes to gather cable bait; after the first bait supplying device releases the rope bait, starting a second bait supplying device at an interval of 0.5-1 hour;

s400, with the downward discharge of the bait in the bait release box, when the fourth time of bait supply is monitored, the lifting device controls the lifting net rack piece to descend to the middle of the bait release box, the lifting device stops moving and keeps the automatic catching device standing for 0.5-1 hour in place; at the moment, the bait supply device is continuously closed, and then the lifting net rack piece is controlled to be completely closed; until the two side surfaces of the peripheral catching net rack component are closed; and after standing for 1 hour, the selective automatic catching device is lifted to catch the required marine aquatic products.

Technical Field

The invention relates to the field of aquatic product fishing, in particular to a device convenient for fishing and a method thereof.

Background

With the increasing demand of aquatic products, the fishing of live fishes becomes an important link gradually, the traditional manual method has the defects of high labor intensity, low working efficiency, high fish death rate and the like,

in addition, with the rapid development of aquaculture industry, no matter large-scale pond culture or cage culture, especially large-scale deepwater net cages, the mechanization problem of live fish catching operation is more and more prominent, when fry are cultured to adult fish, the fry must be caught ashore in time to ensure the economic benefit of culture, if no proper rapid mechanical fish catching equipment is available, the production benefit is greatly influenced, and although the existing catching device for aquatic products such as fishes can intelligently and mechanically catch fish, the structure is complex, the mechanization degree is high, rapid catching cannot be realized, and secondary catching can be performed in time. Therefore, effective solutions to solve the above problems need to be proposed.

Disclosure of Invention

The invention aims to provide a device convenient for fishing and a method thereof, which solve the problems that the mechanization problem of live fish fishing operation is more and more prominent in the prior art along with the rapid development of aquaculture industry, no matter large-scale pond culture or cage culture, especially large-scale deepwater cages, when fish fries are cultured to adult fishes, the fish fries must be timely fished ashore to ensure the economic benefit of the culture, if proper and rapid mechanical fish catching equipment is not available, the production benefit is greatly influenced, and the existing fishing devices for aquatic products such as fishes can intelligently and mechanically catch fishes, but have complex structure and high mechanization degree, can not realize rapid fishing and timely carry out secondary fishing.

The invention adopts the following technical scheme:

the invention provides a device and a method for facilitating fishing, which comprises the following steps:

the bait releasing box is provided with a bait supplying device for continuously supplying bait in the bait releasing box;

the fishing net cages are distributed in a layered manner in an upper-lower structure, and vortex adsorption devices are arranged between the fishing net cages and the bait release boxes; the vortex adsorption device can automatically adsorb the fishes attracted into the bait release box into the fishing net cage in a grading manner;

the peripheral fishing net rack component is arranged on the periphery of the bait release box in a frame mode and is consistent with the area where the fishing net box is arranged in the frame mode; the fishing net rack component comprises at least one lifting net rack piece and a fixed net rack piece; the lifting net frame piece and the fixed net frame piece are matched for use and guide fishes to enter the bait release box;

the lifting device is connected with one end of the lifting net rack piece through a connecting rod, and the lifting net rack piece is lifted in the fishing process;

the support frame is erected outside the fishing net cage, and a support plate is arranged above the support frame; the lifting device is fixed on the supporting plate; a floating mechanism is arranged on the periphery of the upper end of the supporting frame; the floating mechanism can enable the fishing device to automatically float and maintain a balanced state in water;

the bait feeding device comprises a raw material box arranged on the supporting plate and a spiral conveying unit fixedly arranged in the raw material box; the spiral conveying unit realizes intermittent feeding of the bait of the raw material box.

In one implementation, the peripheral fishing net rack assembly is of a square structure as a whole, and the lifting net rack piece is arranged at the corner of the square structure and is of an L-shaped structure; the fixed net rack piece is of a U-shaped structure and forms a gap with the lifting net rack piece;

two positioning blocks are arranged at the L-shaped corner of the lifting net frame piece.

In one implementation, the lifting device comprises a driving motor fixed on the supporting plate, a lead screw fixedly connected with a power shaft of the driving motor, and a transmission nut piece sleeved on the lead screw; one end of the connecting rod is connected to the transmission nut piece, and the other end of the connecting rod is fixedly connected with the positioning block; when the driving motor drives the lead screw to rotate, the lead screw is converted into linear reciprocating motion of the transmission nut piece, and then the transmission nut piece drives the lifting net rack piece to open or close the peripheral fishing net rack component.

In one implementation, the fishing net cage is a square steel structure frame, the top surface and the bottom surface of the fishing net cage are both in a net shape, and the top surface of the fishing net cage is fixedly connected with the bottom surface of the bait release box; the vortex adsorption device is an adsorption pump.

In one implementation, an underwater video camera is arranged on the top surface of the catching net cage and used for shooting the gathering condition of fish and cable baits in the catching net cage.

In one implementation, a feed inlet is formed in the raw material box and close to the conveying end part of the spiral conveying unit; and bait is conveyed into the catching net cage through the conveying pipe in the feed port, and the intermittent feeding of the bait of the raw material box is realized.

In one implementation, the delivery pipe is provided with discharge holes at pipe sections in the bait release box and the fishing net cage.

The present invention also provides a method for facilitating fishing using a device for facilitating fishing according to any one of claims 1 to 7, comprising the steps of:

s100, selecting baits which the caught fishes like to eat according to the ingestion preference characteristics of the caught fishes; selecting the peripheral catching net rack components with corresponding specifications according to the requirements of the body width and the body height of the caught fishes, and installing the peripheral catching net rack components on four side surfaces of the catching net cage;

s200, transporting the selective automatic catching device to a suitable catching area, and placing a mixed solution of bait and seawater in the bait release box to enable the water level of the bait in the bait release box to rise; at the moment, the lifting net rack piece is driven to rise by starting the lifting device, the peripheral fishing net rack component is opened, fish shoals enter the bait release box, and the fishes entering the bait release box are adsorbed into the fishing net cage under the action of the vortex adsorption device;

s300, opening the bait supply device for the first time, releasing bait into a bait release box and a catching net cage, wherein the bait liquid is discharged into the bait release box and the catching net cage through discharge holes to attract fishes to gather cable bait; after the first bait supplying device releases the rope bait, starting a second bait supplying device at an interval of 0.5-1 hour;

s400, with the downward discharge of the bait in the bait release box, when the fourth time of bait supply is monitored, the lifting device controls the lifting net rack piece to descend to the middle of the bait release box, the lifting device stops moving and keeps the automatic catching device standing for 0.5-1 hour in place; at the moment, the bait supply device is continuously closed, and then the lifting net rack piece is controlled to be completely closed; until the two side surfaces of the peripheral catching net rack component are closed; and after standing for 1 hour, the selective automatic catching device is lifted to catch the required marine aquatic products.

The invention has the beneficial effects that: the invention relates to a device convenient for fishing and a method thereof, wherein an underwater video camera adopts a hyperspectral camera, which belongs to the spectral imaging technology and is an image data composition technology with ultra-multi-channel (generally hundreds of channels), continuous narrow wave band and high spectral resolution, the hyperspectral camera shoots hundreds of continuous narrow-band spectral data and can cover rich spectral information from ultraviolet light, visible light to infrared light, a hyperspectral image can carry out fine-grained division on the data in spectral dimension, which is equivalent to obtaining a data cube, provides more abundant characteristics for accurate detection of a target, can obtain good effects under the environments of dim light, turbid water quality, complex background and the like, thereby realizing the visual operation of a fishing net cage 2, large-scale fishing can be carried out by the device, infinite repeated fishing can be carried out, the hyperspectral camera can shoot and automatically observe the fishing amount in the device, the bait feeding device can be controlled intelligently to realize the intermittent feeding of the bait according to the catching result in the catching net cage 2, and more particularly, the bait feeding device comprises a raw material box arranged on the supporting plate 10 and a spiral conveying unit 71 fixedly arranged in the raw material box; the screw conveying unit 71 intermittently supplies the bait of the raw material box; the high efficiency that supplies the bait device to supply the bait to improve and catch need not artifical real-time nurse, can also classify with the good condition of eating through the volume of aquatic products, has saved the categorised work load in aquatic products later stage, and the device can save a large amount of manual work and catch time and artifical categorised time, and the high efficiency is accomplished and is caught the classification with aquatic products, and catches the work difficulty not high, increase economic benefits by a wide margin. In the specific fishing process, the lifting device 4 is used, namely, the driving motor 41 drives the screw rod 42 to rotate and then converts the rotation into the linear reciprocating motion of the transmission nut piece 43, and then the transmission nut piece 43 drives the lifting net rack piece 31 to open or close the peripheral fishing net rack component 3. The degree of opening of the peripheral fishing net rack assembly 3 is realized according to the monitored fish amount. Specifically, when the fourth time of feeding is monitored as the bait leaks from the bait release box 1, and the lifting device 4 controls the lifting net frame member 31 to descend to the middle part of the bait release box 1, the lifting device 4 stops moving and keeps the automatic catching device standing for 0.5-1 hour in situ; at this time, the bait feeding device is continuously closed, and then the lifting net frame member 31 is controlled to be completely closed; until the two side surfaces of the peripheral catching net rack component 3 are closed; and after standing for 1 hour, the selective automatic catching device is lifted to catch the required marine aquatic products.

Drawings

FIG. 1 is a schematic front view of a device for facilitating fishing according to an embodiment of the present invention;

FIG. 2 is a schematic three-dimensional view of a device for facilitating fishing according to an embodiment of the present invention;

FIG. 3 is a top view of a device for facilitating fishing according to embodiments of the present invention;

FIG. 4 is a schematic cross-sectional view of a right side view of a device for facilitating fishing in accordance with an embodiment of the present invention;

FIG. 5 is a schematic diagram of a right side view of a device for facilitating fishing according to an embodiment of the present invention;

FIG. 6 is a schematic view of another angle of a device for facilitating fishing according to an embodiment of the present invention;

fig. 7 is a diagram of steps in a method of facilitating fishing according to an embodiment of the present invention.

Detailed Description

The technical problems to be solved, the technical solutions to be adopted and the technical effects to be achieved by the present invention will be clearer, and the technical solutions of the embodiments of the present invention will be further described in detail with reference to the accompanying drawings. As shown in fig. 1 to 7, the present invention provides a device for facilitating fishing, comprising:

the bait releasing box 1 is provided with a bait supplying device for continuously supplying bait in the bait releasing box 1;

the fishing net cage 2 is distributed in a layered manner in an up-down structure, and a vortex adsorption device is arranged between the fishing net cage 2 and the bait release box 1; the vortex adsorption device can automatically adsorb the fishes attracted into the bait release box 1 into the fishing net cage 2 in a grading way;

the peripheral fishing net rack component 3 is framed on the periphery of the bait release box 1, and is consistent with the framed area of the fishing net cage 2; the fishing net rack component 3 comprises at least one lifting net rack piece 31 and a fixed net rack piece 32; the lifting net frame piece 31 and the fixed net frame piece 32 are matched for use and guide fishes to enter the bait releasing box 1;

the lifting device 4 is connected with one end of the lifting net frame piece 31 through a connecting rod 5, and the lifting net frame piece 31 is lifted in the fishing process;

the support frame 6 is erected outside the fishing net cage 2, and a support plate 10 is arranged above the support frame 6; the lifting device 4 is fixed on the supporting plate 10; the periphery of the upper end of the support frame 6 is provided with a floating mechanism; the floating mechanism can enable the fishing device to automatically float and maintain a balanced state in water;

the bait feeding device comprises a raw material box arranged on the supporting plate 10 and a spiral conveying unit 71 fixedly arranged in the raw material box; the screw conveyor 71 intermittently feeds the bait from the raw material tank.

Further, the peripheral fishing net rack component 3 is of a square structure as a whole, and the lifting net rack piece 31 is arranged at the corner of the square structure and is of an L-shaped structure; the fixed net frame piece 32 is in a U-shaped structure and forms a gap with the lifting net frame piece 31;

two positioning blocks 8 are arranged at the L-shaped corner of the lifting net frame piece 31.

Further, the lifting device 4 comprises a driving motor 41 fixed on the support plate 10, a lead screw 42 fixedly connected with a power shaft of the driving motor 41, and a transmission nut member 43 sleeved on the lead screw 42; one end of the connecting rod 5 is connected to the transmission nut piece 43, and the other end is fixedly connected with the positioning block 8; when the driving motor 41 drives the screw rod 42 to rotate, the linear reciprocating motion of the transmission nut member 43 is converted, and then the transmission nut member 43 drives the lifting net rack member 31 to open or close the peripheral fishing net rack assembly 3.

Furthermore, the fishing net cage 2 is a square steel structure frame, the top surface and the bottom surface of the fishing net cage 2 are both in a net shape, and the top surface of the fishing net cage 2 is fixedly connected with the bottom surface of the bait release box 1; the vortex adsorption device is an adsorption pump.

Furthermore, an underwater video camera is arranged on the top surface of the catching net cage 2 and used for shooting the gathering condition of the fish and the bait in the catching net cage 2.

Further, a feed inlet 1 is arranged in the raw material box and close to the conveying end part of the spiral conveying unit 71; the feed inlet 1 is internally provided with the bait which is conveyed into the fishing net cage 2 through the conveying pipe 9 and realizes the intermittent feed of the bait of the raw material box.

Furthermore, the pipe sections of the conveying pipe 9 positioned in the bait releasing box 1 and the catching net cage 2 are provided with discharge holes.

The above implementation, specifically, the underwater video camera adopts a hyperspectral camera, belongs to a spectral imaging technology, and is an image data composition technology with ultra-multi-channel (generally hundreds of channels), continuous narrow-band and high spectral resolution, the hyperspectral camera shoots hundreds of continuous narrow-band spectral data, and can cover rich spectral information from ultraviolet light, visible light to infrared light, the hyperspectral image can divide the data in spectral dimension with fine granularity, which is equivalent to obtaining a data cube, provides more abundant characteristics for accurate detection of a target, and can obtain good effects in environments with dim light, turbid water quality, complex background, and the like, thereby realizing the visual operation of the fishing net cage 2, large-scale fishing can be performed by the device, repeated fishing can be performed infinitely, the capture amount in the device can be observed by the hyperspectral camera, the bait feeding device can be controlled intelligently to realize the intermittent feeding of the bait according to the catching result in the catching net cage 2, and more particularly, the bait feeding device comprises a raw material box arranged on the supporting plate 10 and a spiral conveying unit 71 fixedly arranged in the raw material box; the screw conveying unit 71 intermittently supplies the bait of the raw material box; the high efficiency that supplies the bait device to supply the bait to improve and catch need not artifical real-time nurse, can also classify with the good condition of eating through the volume of aquatic products, has saved the categorised work load in aquatic products later stage, and the device can save a large amount of manual work and catch time and artifical categorised time, and the high efficiency is accomplished and is caught the classification with aquatic products, and catches the work difficulty not high, increase economic benefits by a wide margin. In the specific fishing process, the lifting device 4 is used, namely, the driving motor 41 drives the screw rod 42 to rotate and then converts the rotation into the linear reciprocating motion of the transmission nut piece 43, and then the transmission nut piece 43 drives the lifting net rack piece 31 to open or close the peripheral fishing net rack component 3. The degree of opening of the peripheral fishing net rack assembly 3 is realized according to the monitored fish amount. Specifically, when the fourth time of feeding is monitored as the bait leaks from the bait release box 1, and the lifting device 4 controls the lifting net frame member 31 to descend to the middle part of the bait release box 1, the lifting device 4 stops moving and keeps the automatic catching device standing for 0.5-1 hour in situ; at this time, the bait feeding device is continuously closed, and then the lifting net frame member 31 is controlled to be completely closed; until the two side surfaces of the peripheral catching net rack component 3 are closed; and after standing for 1 hour, the selective automatic catching device is lifted to catch the required marine aquatic products.

In order to further clarify the specific structure of the lifting device 4, the lifting device 4 comprises a driving motor 41 fixed on the support plate 10, a lead screw 42 fixedly connected with a power shaft of the driving motor 41, and a transmission nut member 43 sleeved on the lead screw 42; one end of the connecting rod 5 is connected to the transmission nut piece 43, and the other end is fixedly connected with the positioning block 8; when the driving motor 41 drives the screw rod 42 to rotate, the linear reciprocating motion of the transmission nut member 43 is converted, and then the transmission nut member 43 drives the lifting net rack member 31 to open or close the peripheral fishing net rack assembly 3. The driving motor 41 in the lifting device 4 adopts a seawater motor, and considering the problems that the working condition of the seawater motor is complex, the use environment is severe, and both a motor rotor and magnetic steel are easy to corrode and lose efficacy, the driving motor 41 in the embodiment comprises a stainless steel sleeve, magnetic steel, a magnetic conductive steel sleeve, a stainless steel shaft and a stainless steel end plate, and the stainless steel shaft is arranged in the stainless steel sleeve; the stainless steel shaft is sleeved with a magnetic conductive steel sleeve; the stainless steel shaft sleeved with the magnetic steel sleeve is arranged inside the stainless steel end plate; the magnetic steel is bonded on the magnetic steel guide sleeve; the stainless steel sleeve is made of 316L stainless steel; the magnetic steel, the magnetic conduction steel sleeve, the stainless steel shaft and the stainless steel end plate are all made of 316L stainless steel. The motor rotor has the advantages of greatly improved reliability and service life and strong pressure resistance. Meanwhile, the seawater motor is provided with a full stainless steel rotor, and epoxy glue is arranged in a gap between the magnetic steel and the stainless steel sleeve; the epoxy glue fills the gap between the magnetic steel and the stainless steel sleeve, so that the rotor is solid and has strong pressure resistance.

The present embodiment also provides a method for facilitating fishing using a device for facilitating fishing according to any one of claims 1 to 7, comprising the steps of:

s100, selecting baits which the caught fishes like to eat according to the ingestion preference characteristics of the caught fishes; selecting peripheral catching net rack components 3 with corresponding specifications according to the requirements of the body width and the body height of the caught fishes, and installing the peripheral catching net rack components 3 on four side surfaces of the catching net cage 2;

s200, transporting the selective automatic catching device to a suitable catching area, and placing a mixed solution of bait and seawater in a bait release box 1 to enable the water level of the bait in the bait release box 1 to rise; at the moment, the lifting device 4 is started to drive the lifting net rack piece 31 to rise, the peripheral fishing net rack component 3 is opened, fish shoals enter the bait release box 1, and the fishes entering the bait release box 1 are adsorbed into the fishing net cage 2 under the action of the vortex adsorption device;

s300, opening the bait supply device for the first time, releasing the baits into the bait release box 1 and the catching net cage 2, wherein the bait liquid is discharged into the bait release box 1 and the catching net cage 2 through the discharge holes to attract the fishes to gather the rope baits; after the first bait supplying device releases the rope bait, starting the second bait supplying device at an interval of 0.5-1 hour;

s400, with the bait leaking from the bait release box 1, when the fourth bait supply is monitored, the lifting device 4 controls the lifting net rack piece 31 to descend to the middle of the bait release box 1, the lifting device 4 stops moving, and the automatic catching device is kept standing for 0.5-1 hour in place; at this time, the bait feeding device is continuously closed, and then the lifting net frame member 31 is controlled to be completely closed; until the two side surfaces of the peripheral catching net rack component 3 are closed; and after standing for 1 hour, the selective automatic catching device is lifted to catch the required marine aquatic products.

According to the fishing mode, the baits which the caught fishes like to eat can be selected according to the ingestion preference characteristics of the caught fishes; selecting peripheral catching net rack components 3 with corresponding specifications according to the requirements of the body width and the body height of the caught fishes, and installing the peripheral catching net rack components 3 on four side surfaces of the catching net cage 2; the selective automatic catching device is transported to a suitable catching area, and the mixed liquid of the bait and the seawater is placed in the bait releasing box 1 to enable the water level of the bait in the bait releasing box 1 to rise; at the moment, the lifting device 4 is started to drive the lifting net rack piece 31 to rise, the peripheral fishing net rack component 3 is opened, fish shoals enter the bait release box 1, and the fishes entering the bait release box 1 are adsorbed into the fishing net cage 2 under the action of the vortex adsorption device; in order to ensure the retention of the fish entering the fishing net cage 2, a feed inlet 1 is further arranged in the raw material box and close to the conveying end part of the spiral conveying unit 71; the feed inlet 1 is internally provided with the bait which is conveyed into the fishing net cage 2 through the conveying pipe 9 and realizes the intermittent feed of the bait of the raw material box. The pipe sections of the conveying pipe 9 positioned in the bait releasing box 1 and the catching net cage 2 are provided with discharge holes. The normal bait supply of the fish shoals in the fishing net cage 2 can be met through the discharge holes. More specifically, the bait supply device is opened for the first time, and bait is released into the bait release box 1 and the catching net cage 2, wherein the bait liquid is discharged into the bait release box 1 and the catching net cage 2 through the discharge holes to attract fishes to gather cable bait; after the first bait supplying device releases the rope bait, starting the second bait supplying device at an interval of 0.5-1 hour; along with the downward discharge of the bait in the bait release box 1, when the fourth time of bait supply is monitored, and the lifting device 4 controls the lifting net frame piece 31 to descend to the middle part of the bait release box 1, the lifting device 4 stops moving and keeps the automatic catching device standing for 0.5-1 hour in situ; at this time, the bait feeding device is continuously closed, and then the lifting net frame member 31 is controlled to be completely closed; until the two side surfaces of the peripheral catching net rack component 3 are closed; and after standing for 1 hour, the selective automatic catching device is lifted to catch the required marine aquatic products.

It should be added that the aquaculture user can combine his own situation by the above arrangement, and a multifunctional device can be added at the end of the vortex adsorption device. If fish lifting devices and counting devices can be added in the culture, the fish can be rapidly transported, so that the survival rate of the fish is ensured, and the economic benefit of the fish is increased. A grading and weighing device is added in the fishing link, so that the integrated work of fish sucking, grading, weighing and the like is realized, the whole process is more compact, and the fishing device is safe, environment-friendly and sustainable. In the aspect of ocean fishing, power devices such as solar energy, wind energy and the like can be added, and the purposes of energy conservation and environmental protection are achieved. Can increase fish water separator and drying device in the processing link, realize flesh of fish quick storage and transportation to guarantee its processing quality. Therefore, the functionality of the device is improved aiming at different circulation links, the suction and catching equipment is added, the labor intensity can be greatly reduced, and the working efficiency is improved.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.