CN112471023A

CN112471023A - Net cage for aquaculture

Info

Publication number: CN112471023A
Application number: CN202011349673.XA
Authority: CN
Inventors: 程燕; 江坤
Original assignee: Chaohu Jiangtao Aquatic Food Co ltd
Current assignee: Chaohu Jiangtao Aquatic Food Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-03-12

Abstract

The invention belongs to the technical field of aquaculture equipment, and particularly relates to a net cage for aquaculture; comprises a net box body; a side net rack is arranged between two adjacent fixed pillars; a filter screen is fixed on the side net rack; the double-shaft motor is fixed inside the fixed support, and the output ends of the double-shaft motor are connected with rotating shafts; a wire twisting cylinder is fixed on the rotating shaft positioned at the upper end of the double-shaft motor, and a steel wire rope is wound on the wire twisting cylinder; the bottom end of the steel wire rope penetrates through the fixed support and is connected to the upper surface of the bottom-end net rack; a driving gear is fixed on a rotating shaft at the lower end of the double-shaft motor, and the driving gear is engaged with a driven gear; the driven gear is rotatably arranged in the fixed support column through a rotating column, and a wire twisting cylinder is fixedly sleeved on the rotating column; the end part of the steel wire rope penetrates through the lower side wall of the fixed support and is connected to the bottom end surface of the bottom net rack; the invention reduces the labor force required by the culture personnel and improves the efficiency of aquatic product culture.

Description

Net cage for aquaculture

Technical Field

The invention belongs to the technical field of aquaculture equipment, and particularly relates to a net cage for aquaculture.

Background

The aquaculture net cage culture is a scientific aquaculture method which is gradually developed on the basis of temporary culture. The net cage is characterized in that net sheets are assembled into a box body with a certain shape, the box body is arranged in a larger water body, and the water body inside and outside the net cage is exchanged through meshes, so that a good running water protection environment suitable for the life of aquatic animals is formed in the net cage. The net cage can be used for high-density culture of aquaculture products or intensive culture of aquatic commodity. Is widely applied and popularized in the sea and fresh water aquaculture industry of China.

The Chinese patent discloses a movable aquaculture net cage, and patent application number is 2017104489858, including setting up the both ends of aquaculture net cage into movable inserted door structure, connect two net cage valve ends when needs shift aquaculture aquatic products and lock, open own dodge gate, it has just gone to drive aquaculture aquatic products from a net cage to another net cage, the both ends of aquaculture net cage are provided with slipknot door frame, activity net door, door lockpin and net cage lock.

The net cage has the moving function; after the aquatic products of the conventional net cage are mature, the mature aquatic products in the net cage are mostly caught in a way that a plurality of cultivation personnel are mutually matched, so that the labor force required by the cultivation personnel and the cultivation cost are improved, and the aquatic product cultivation efficiency is reduced; and meanwhile, the depth inside the net cage is difficult to adjust, and the net cage is difficult to adapt to the phenomenon of breeding of different kinds of aquatic products.

In view of this, in order to overcome the above technical problems, the present company has designed and developed a net cage for aquaculture, which solves the above technical problems.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides the net cage for aquaculture, which is mainly used for solving the problem that after the aquatic products of the existing net cage are mature, most of the mature aquatic products in the net cage are caught in a way that a plurality of aquaculture personnel are mutually matched, so that the labor force required by the aquaculture personnel and the aquaculture cost are improved, and the aquaculture efficiency of the aquatic products is reduced; and meanwhile, the depth inside the net cage is difficult to adjust, and the net cage is difficult to adapt to the phenomenon of breeding of different kinds of aquatic products.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a net cage for aquaculture, which comprises a net cage body; the net box body comprises a fixed pillar, a side net rack, a bottom net rack and a filter screen; the fixed pillars are respectively arranged at four corners of the net cage body; a side net rack is arranged between every two adjacent fixed pillars; a filter screen is fixed on the side net rack, and a supporting strip is fixed on the inner wall of the bottom end of the side net rack; sliding blocks are arranged at four corners of the net rack at the bottom end, and each sliding block is correspondingly inserted into a sliding groove formed in the fixed support in a sliding manner; the peripheral bottom end surface of the bottom net rack is slidably supported to the upper end surfaces of the supporting bars, and a filter screen is fixed on the bottom net rack; the net frame at the bottom end slides up and down in the net cage body through a plurality of groups of sliding retraction mechanisms, and the sliding retraction mechanisms are arranged in the fixed support columns; the sliding retraction jack comprises a double-shaft motor, a rotating shaft, a wire twisting barrel, a steel wire rope, a driving gear, a rotating column and a driven gear; the double-shaft motor is fixed inside the fixed support, and the output ends of the double-shaft motor are connected with rotating shafts; a wire twisting barrel is fixed on the rotating shaft positioned at the upper end of the double-shaft motor, and a steel wire rope is wound on the wire twisting barrel; the bottom end of the steel wire rope penetrates through the fixed support and is connected to the upper surface of the bottom-end net rack; a driving gear is fixed on a rotating shaft at the lower end of the double-shaft motor, and the driving gear is engaged with a driven gear; the rotating speeds of the driving gear and the driven gear are the same; the driven gear is rotatably arranged in the fixed supporting column through a rotating column, and a wire twisting cylinder is fixedly sleeved on the rotating column; a wire rope is wound on the wire barrel sleeved on the rotating column, and the end part of the wire rope penetrates through the lower side wall of the fixed support to be connected to the bottom end surface of the bottom net rack;

when the net cage body is needed to be used, a breeding worker can fix the fixing support columns at the four corners of the net cage body to a breeding area, then the wiring ends of the double-shaft motor are connected to the connecting wires outside the net cage body in an insulating and sealing mode, the double-shaft motor can be powered in a solar power generation mode, the breeding worker puts aquatic products needing to be bred into the net cage body, and the filter screen can prevent the aquatic products from escaping from the net cage body; when aquatic products in the net cage body are cultured and matured, a culturing person can control the double-shaft motors in the four fixed supporting columns to synchronously rotate clockwise through the controller, the output shafts at the upper ends of the double-shaft motors can drive the wire stranding cylinders to wind the wire ropes, the output shafts at the lower ends of the double-shaft motors can drive the driving gears to rotate through the rotating shafts, the driven gears meshed with the driving gears can synchronously rotate anticlockwise, the wire ropes wound on the wire stranding cylinders fixedly arranged on the rotating columns can be discharged, the culturing person can control the double-shaft motors in the plurality of fixed supporting columns to synchronously rotate clockwise through the controller, the wire stranding cylinders above the fixed supporting columns can wind and wind the wire ropes, the winding of the wire ropes can pull the net frame at the bottom end to upwards slide along the side wall of the net cage body, the net frame at the bottom end drives the filter screen to slide upwards, so that the cultivation personnel can quickly collect and fish out the aquatic products cultivated in the net cage body; after aquatic products in the net cage body are completely fished out, aquaculture personnel control the plurality of double-shaft motors to rotate anticlockwise through the controller, the winding drums at the upper ends of the double-shaft motors can discharge wound steel wire ropes, the winding drums at the lower ends of the double-shaft motors can wind and wind the steel wire ropes at the bottom end faces of the net racks at the bottom ends, so that the net racks at the bottom ends which slide upwards conveniently can quickly and stably slide to the bottom ends of the net cage body, the net racks at the bottom ends can be supported and limited by the supporting strips arranged on the inner side walls of the side net racks, the phenomenon that the net racks at the bottom ends sink due to overlarge; if the mature aquatic products cultured in the net cage body are big fishes with high liveness, the height of the net cage at the bottom end can be slowly adjusted by the culture personnel, so that the phenomenon that the cultured mature big fishes jump out of the net cage body is prevented; through the matching of the bottom net rack arranged in a sliding manner and the plurality of groups of sliding retraction mechanisms, the sliding retraction mechanisms can pull the bottom net rack and the filter screen upwards to the upper part of the net box body, so that the aquaculture personnel can quickly clean and fish out the aquatic products cultured in the upwards-slid bottom net rack, and the phenomenon that the aquaculture personnel fish out the aquatic products cultured in the net box body through the matching of a plurality of labor personnel is not needed, thereby reducing the labor force required by the aquaculture personnel and improving the aquaculture efficiency of the aquatic products; meanwhile, the aquaculture personnel can adjust the depth from the net rack at the bottom end to the upper end face of the net box body according to the species of aquatic product aquaculture, and the net box body is convenient to use and can be suitable for aquaculture of different species of aquatic products.

Preferably, the peripheral side wall of the bottom net rack is provided with a sliding cavity, and an elastic raised column is arranged in the sliding cavity in a sliding manner through a spring; the outer wall of the elastic raised column is provided with raised spines, and the end part of the elastic raised column is in sliding contact with meshes of a filter screen arranged on the side net rack; when the side net rack is driven by the sliding retraction mechanism to slide along the inner side wall of the side net rack during operation, the plurality of elastic raised columns arranged on the side wall of the side net rack can be slidably inserted into meshes of the filter screen arranged on the side net rack, when the elastic raised columns are separated from the meshes of the filter screen, the raised spines arranged on the outer wall of the elastic raised columns can hook the net wires of the filter screen, the springs connected with the ends of the elastic raised columns can be stretched, but the elastic raised columns cannot slide out of the sliding cavity, when the upward sliding distance of the side net rack is too large, the elastic raised columns can be completely separated from the meshes of the filter screen hooked by the raised spines, the bounce of the filter screen can shake the elastic raised columns, and meanwhile, the elastic raised columns can shake under the elastic pulling of the springs to contact the surface of the filter screen, so that sundries adhered or adsorbed on the filter screen arranged on the side net rack can, the phenomenon that the meshes of the filter screen are blocked is prevented, so that the circulating flow replacement of water flow in the net cage body is influenced, and the safe aquaculture operation of the net cage body on aquatic products is influenced.

Preferably, the filter screen arranged on the side net rack is elastically connected with a pulling strip, and the outer end part of the pulling strip penetrates through the fixed support and is positioned at the lower end output shaft of the double-shaft motor; the end part of the pulling strip is provided with an elastic lug; a plurality of extrusion convex blocks are arranged on the outer wall of the rotating shaft at the lower end of the double-shaft motor, and one side wall of each extrusion convex block is in rotating extrusion contact with the other side wall of the elastic convex block; when the double-shaft motor works, when the lower-end rotating shaft of the double-shaft motor rotates, the rotating shaft can drive one of the extrusion convex blocks to generate rotating extrusion on the elastic bulge at the end part of the pulling strip, meanwhile, the extrusion force of the extrusion lug when rotating can cause the pulling strip to be pulled through the elastic lug, so that the filter screen connected with the other end of the pulling strip is tensioned, when the extrusion lug is separated from the extrusion of the elastic lug, the pulling strip slides to the initial position, the tensioned filter screen can be loosened, and the elastic lugs are continuously extruded and separated by the extrusion lugs, so that the filter screen of the side net rack can generate reciprocating vibration in water, simultaneously under the cooperation of the protruding post of elasticity that the net rack lateral wall set up in bottom, the filter screen of the net rack of can further increase side shakes frequency and the range of shake, further improves the function of the automatic clearance of the filter screen of side net rack, does not need the manual work to clear up the operation to the filter screen of side net rack.

Preferably, two ends of the side net rack are provided with T-shaped sliding strips; the outer wall of the fixed support column is provided with a T-shaped sliding groove, and a T-shaped sliding strip is inserted into the T-shaped sliding groove in a sliding manner; the upper part of the fixed support is hermetically connected with a sealing cover, and the bottom end surface of the sealing cover is extruded to the upper end surface of the T-shaped sliding strip through an extrusion block; when the net box is in work, when a farmer finds that a filter screen of a side net rack on one side of the net box body is damaged, an operator can open sealing covers on fixed supporting columns on two sides of the damaged side net rack, then firstly remove pulling strips from the damaged filter screen, and then the farmer pulls the side net rack to enable T-shaped sliding strips on two sides of the side net rack to slide out of a T-shaped sliding groove, so that the damaged filter screen is taken out; then with new filter screen and side net rack slip insert between two adjacent fixed pillars, the T type draw runner slides and inserts in the T type spout, then close sealed lid fixed cover to the fixed pillar on, will stimulate the strip and continue to be connected to on the newly-changed filter screen, and then be convenient for fix the side net rack and the filter screen of newly-changing, other undamaged filter screens can normal use simultaneously, and then improved the life of the box with a net body and the high-efficient utilization of the box with a net body.

Preferably, a limiting clamping strip is inserted in the sliding groove in a sliding manner, and a clamping groove is formed in the side wall of the limiting clamping strip; the clamping groove is clamped to the outer wall of the steel wire rope in an extruding mode; the upper end surface of the limiting clamping strip is provided with a pressing plate, and the pressing plate is connected to the sealing cover through a bolt thread; when the net cage is in normal use, a farmer can insert the limiting clamping strip into the sliding groove, and meanwhile, the clamping groove can clamp and fix the steel wire rope, so that particularly, when the net cage at the bottom end is positioned in supporting contact with the supporting bars, the gravity of the net cage at the bottom end can prevent the steel wire rope wound on the wire barrel from rotating, and further the stable supporting operation of the steel wire rope on the net cage at the bottom end is influenced; when the net rack at the bottom end is required to slide up and down, the breeding personnel take the bolt down from the sealing cover, so that the bolt is separated from the fixation of the pressing plate, then the breeding personnel take the limiting clamping strip out of the sliding groove, so that the limiting clamping strip is separated from the clamping of the steel wire rope, and then the sliding retraction jack drives the net rack at the bottom end to slide up and down in the net box body.

Preferably, the upper outer side wall and the lower outer side wall of the fixed support are both provided with wear-resistant sealing rings, and steel wire ropes are arranged in the wear-resistant sealing rings in a sealing and sliding manner; the during operation, the wear-resisting sealing washer that sets up simultaneously can reduce wire rope and to the phenomenon of fixed stay sliding wear, improves the sealing connection effect between wire rope and the fixed stay simultaneously, prevents the phenomenon of the inside infiltration that produces of fixed stay.

The invention has the following beneficial effects:

1. according to the invention, through the matching of the bottom net rack arranged in a sliding manner and the plurality of groups of sliding retraction mechanisms, the sliding retraction mechanisms can pull the bottom net rack and the filter screen upwards to the upper part of the net cage body, so that the aquaculture personnel can quickly clean and fish out the aquatic products cultured in the bottom net rack after upwards sliding, and the phenomenon that the aquaculture personnel fish out the aquatic products cultured in the net cage body through the matching of a plurality of labor personnel is not needed, thus the labor force required by the aquaculture personnel is reduced, and the aquatic product culturing efficiency is improved.

2. The elastic lugs are continuously extruded and separated by the plurality of extrusion lugs, so that the filter screen of the side net rack generates reciprocating vibration in water, and simultaneously, under the matching of the elastic convex columns arranged on the side wall of the net rack at the bottom end, the vibration frequency and the vibration amplitude of the filter screen of the side net rack can be further increased, the automatic cleaning function of the filter screen of the side net rack is further improved, and the filter screen of the side net rack does not need to be cleaned manually.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a cross-sectional view of the cage body of the present invention;

fig. 3 is a structural view of a sliding mechanism of the present invention;

in the figure: the net cage body 1, the fixed support column 2, the sliding groove 21, the T-shaped sliding groove 22, the side net frame 3, the bottom net frame 4, the sliding block 41, the sliding cavity 42, the filter screen 5, the sliding retraction mechanism 6, the double-shaft motor 61, the rotating shaft 62, the wire stranding barrel 63, the steel wire rope 64, the driving gear 65, the rotating column 66, the driven gear 67, the elastic convex column 7, the convex thorn 71, the pulling strip 8, the elastic convex block 81, the extrusion convex block 9, the T-shaped sliding strip 10, the sealing cover 20, the limiting clamping strip 30, the clamping groove 301, the laminated plate 40 and the wear-resistant sealing ring 50.

Detailed Description

An aquaculture net cage according to an embodiment of the present invention will be described below with reference to fig. 1 to 3.

As shown in fig. 1-3, the net cage for aquaculture according to the present invention comprises a net cage body 1; the net cage body 1 comprises a fixed pillar 2, a side net rack 3, a bottom net rack 4 and a filter screen 5; the fixed pillars 2 are respectively arranged at four corners of the net box body 1; a side net rack 3 is arranged between every two adjacent fixed struts 2; a filter screen 5 is fixed on the side net rack 3, and a support strip is fixed on the inner wall of the bottom end of the side net rack 3; sliding blocks 41 are arranged at four corners of the bottom net rack 4, and each sliding block 41 is correspondingly inserted into a sliding groove 21 formed in the fixed support 2 in a sliding manner; the peripheral bottom end surface of the bottom end net rack 4 is slidably supported to the upper end surface of the supporting bar, and a filter screen 5 is fixed on the bottom end net rack 4; the net frame 4 at the bottom end slides up and down in the net cage body 1 through a plurality of groups of sliding retraction mechanisms 6, and the sliding retraction mechanisms 6 are arranged in the fixed pillars 2; the sliding retraction jack 6 comprises a double-shaft motor 61, a rotating shaft 62, a wire twisting drum 63, a steel wire rope 64, a driving gear 65, a rotating column 66 and a driven gear 67; the double-shaft motor 61 is fixed inside the fixed support column 2, and the output ends of the double-shaft motor 61 are connected with rotating shafts 62; a wire barrel 63 is fixed on a rotating shaft 62 positioned at the upper end of the double-shaft motor 61, and a steel wire rope 64 is wound on the wire barrel 63; the bottom end of the steel wire rope 64 penetrates through the fixed strut 2 and is connected to the upper surface of the bottom-end net rack 4; a driving gear 65 is fixed on the rotating shaft 62 at the lower end of the double-shaft motor 61, and a driven gear 67 is meshed with the driving gear 65; the rotating speed of the driving gear 65 is the same as that of the driven gear 67; the driven gear 67 is rotatably arranged in the fixed support column 2 through a rotating column 66, and a wire stranding barrel 63 is fixedly sleeved on the rotating column 66; a wire rope 64 is wound on a wire barrel 63 sleeved on the rotating column 66, and the end part of the wire rope 64 penetrates through the lower side wall of the fixed support column 2 and is connected to the bottom end surface of the bottom net rack 4;

when the net cage body 1 is needed to be used, a breeding worker can fix the fixing pillars 2 at the four corners of the net cage body 1 to a breeding area, then the wiring end of the double-shaft motor 61 is connected to a connecting wire outside the net cage body 1 in an insulating and sealing mode, the double-shaft motor 61 can be powered in a solar power generation mode, the breeding worker puts aquatic products needing to be bred into the net cage body 1, and the filter screen 5 can prevent the aquatic products from escaping from the net cage body 1; when aquatic products in the net cage body 1 are cultured to be mature, a culturing person can control the double-shaft motors 61 in the four fixed supporting columns 2 to synchronously rotate clockwise through the controller, an output shaft at the upper end of each double-shaft motor 61 can drive the wire stranding cylinders 63 to wind the steel wire ropes 64, an output shaft at the lower end of each double-shaft motor 61 can drive the driving gears 65 to rotate through the rotating shafts 62, the driven gears 67 meshed with the driving gears 65 synchronously rotate anticlockwise, the steel wire ropes 64 wound on the wire stranding cylinders 63 fixedly arranged on the rotating columns 66 can be discharged, the culturing person can control the double-shaft motors 61 in the plurality of fixed supporting columns 2 to synchronously rotate clockwise through the controller, the wire stranding cylinders 63 above the fixed supporting columns 2 can wind and wind the steel wire ropes 64, the winding of the steel wire ropes 64 can pull the net frame 4 at the bottom end to slide upwards along the side wall of the net cage body 1, aquatic products cultured in the net cage body 1 can be gathered upwards to the upper port of the net cage body 1, so that the cultured aquatic products in the net cage body 1 can be conveniently and quickly collected and fished out by culture personnel; after all aquatic products in the net cage body 1 are fished out, aquaculture personnel control the plurality of double-shaft motors 61 to rotate anticlockwise through the controller, the wire twisting cylinders 63 at the upper ends of the double-shaft motors 61 can release the wound wire ropes 64, the wire twisting cylinders 63 at the lower ends of the double-shaft motors 61 can wind and wind the wire ropes 64 at the bottom end faces of the net racks 4 at the bottom ends, so that the net racks 4 sliding upwards can quickly and stably slide to the bottom ends of the net cage body 1, supporting bars arranged on the inner side walls of the side net racks 3 can support and limit the net racks 4 at the bottom ends, the phenomenon that the net racks 4 at the bottom ends sink due to overlarge gravity is prevented, and the net cage body 1 can; if the mature aquatic products cultured in the net cage body 1 are big fishes with high liveness, the height of the net frame 4 at the bottom end can be slowly adjusted by the culture personnel, so that the phenomenon that the mature big fishes are jumped out of the net cage body 1 is prevented; through the matching of the bottom net rack 4 and the plurality of groups of sliding retraction mechanisms 6, the sliding retraction mechanisms 6 can pull the bottom net rack 4 and the filter screen 5 upwards to the upper part of the net cage body 1, so that the cultivation personnel can quickly clean and fish out the aquatic products cultivated in the bottom net rack 4 after upwards sliding, the phenomenon that the cultivation personnel fish out the aquatic products cultivated in the net cage body 1 through the matching of a plurality of labor personnel is not needed, the labor force required by the cultivation personnel is reduced, and the cultivation efficiency of the aquatic products is improved; meanwhile, the aquaculture personnel can adjust the depth from the net rack 4 at the bottom end to the upper end face of the net box body 1 according to the species of aquatic product aquaculture, so that the net box body 1 is convenient to use for aquaculture of different species of aquatic products.

As an embodiment of the present invention, a sliding cavity 42 is formed on the peripheral side wall of the bottom net rack 4, and an elastic protruding column 7 is slidably arranged in the sliding cavity 42 through a spring; the outer wall of the elastic convex column 7 is provided with convex thorns 71, and the end part of the elastic convex column 7 is in sliding contact with the meshes of the filter screen 5 arranged on the side net rack 3; when the cleaning machine works, when the bottom net rack 4 is driven by the sliding retraction mechanism 6 to slide along the inner side wall of the side net rack 3, the plurality of elastic raised columns 7 arranged on the side wall of the bottom net rack 4 can be slidably inserted into meshes of the filter screen 5 arranged on the side net rack 3, when the elastic raised columns 7 are separated from the meshes of the filter screen 5, the raised spines 71 arranged on the outer wall of the elastic raised columns 7 can hook the net wires of the filter screen 5, the springs connected with the end parts of the elastic raised columns 7 can be stretched, but the elastic raised columns 7 cannot slide out of the sliding cavities 42, when the upward sliding distance of the bottom net rack 4 is too large, so that the elastic raised columns 7 are completely separated from the meshes of the filter screen 5 hooked by the raised spines 71, the rebound force of the filter screen 5 can enable the elastic raised columns 7 to shake, meanwhile, the elastic raised columns 7 can shake under the elastic pulling of the springs to contact with the surface of the filter screen 5, thereby facilitating the cleaning of sundries adhered or adsorbed, prevent that the mesh of filter screen 5 from producing the phenomenon of jam, and then influence the circulation of the inside rivers of net box 1 and flow the change, influenced the safe aquaculture operation of net box 1 to aquatic products simultaneously.

As an embodiment of the present invention, a filter screen 5 disposed on the side net rack 3 is elastically connected with a pulling strip 8, and the outer end of the pulling strip 8 passes through the fixed support 2 and is located at the lower output shaft of the double-shaft motor 61; the end of the pulling strip 8 is provided with an elastic lug 81; a plurality of extrusion convex blocks 9 are arranged on the outer wall of the rotating shaft 62 at the lower end of the double-shaft motor 61, and one side wall of each extrusion convex block 9 is in rotating extrusion contact with the other side wall of the elastic convex block 81; in operation, when the lower end rotating shaft 62 of the double-shaft motor 61 rotates, the rotating shaft 62 drives one of the extrusion convex blocks 9 to rotate and extrude the elastic protrusion at the end of the pulling strip 8, and the extrusion force of the extrusion convex block 9 in rotation can pull the pulling strip 8 through the elastic convex block 81, so that the filter screen 5 connected with the other end of the pulling strip 8 is tensioned, when the extrusion convex block 9 breaks away from the extrusion of the elastic convex block 81, the pulling strip 8 can slide to the initial position, and the tensioned filter screen 5 can be loosened, and further the elastic convex blocks 81 are continuously extruded and broken away through the extrusion convex blocks 9, so that the filter screen 5 of the side net rack 3 can generate reciprocating vibration in water, and simultaneously, under the cooperation of the elastic convex columns 7 arranged on the side wall of the bottom net rack 4, the shaking frequency and the shaking amplitude of the filter screen 5 of the side net rack 3 can be, further improve the function of the automatic clearance of the filter screen 5 of side rack 3, do not need the manual work to clear up the operation to the filter screen 5 of side rack 3.

As an embodiment of the present invention, the two ends of the side net frame 3 are provided with T-shaped sliding strips 10; the outer wall of the fixed support column 2 is provided with a T-shaped sliding groove 22, and the T-shaped sliding groove 22 is inserted with a T-shaped sliding strip 10 in a sliding manner; the upper part of the fixed support column 2 is hermetically connected with a sealing cover 20, and the bottom end surface of the sealing cover 20 is extruded to the upper end surface of the T-shaped slide bar 10 through an extrusion block; when the net cage is in operation, when a farmer finds that the filter screen 5 of the side net rack 3 on one side of the net cage body 1 is damaged, the operator can open the sealing covers 20 on the fixing supports 2 on two sides of the damaged side net rack 3, then firstly remove the pulling strips 8 from the damaged filter screen 5, and then the farmer pulls the side net rack 3 to enable the T-shaped sliding strips 10 on two sides of the side net rack 3 to slide out of the T-shaped sliding grooves 22, so that the damaged filter screen 5 is taken out; then with new filter screen 5 and side net rack 3 slip insert between two adjacent fixed stay 2, T type draw runner 10 slip inserts in T type spout 22, then close the fixed lid of sealed lid 20 to fixed stay 2 on, will stimulate on the strip 8 continuous connection to the filter screen 5 of new change, and then be convenient for fix the side net rack 3 and the filter screen 5 of new change, other undamaged filter screens 5 can normal use simultaneously, and then improved the high-efficient utilization of the life of box with a net body 1 and box with a net body 1.

As an embodiment of the present invention, a limiting engaging strip 30 is inserted into the sliding groove 21 in a sliding manner, and an engaging groove 301 is formed in a side wall of the limiting engaging strip 30; the clamping groove 301 is clamped to the outer wall of the steel wire rope 64 in an extruding manner; the upper end face of the limiting clamping strip 30 is provided with a pressing plate 40, and the pressing plate 40 is connected to the sealing cover 20 through a bolt thread; when the net cage body 1 is in normal use, a farmer can insert the limiting clamping strip 30 into the sliding groove 21, and meanwhile, the clamping groove 301 can clamp and fix the steel wire rope 64, so that particularly, when the net cage body 4 at the bottom end is positioned in supporting strip supporting contact, the steel wire rope 64 wound on the wire twisting barrel 63 can rotate due to the gravity action of the net cage body 4 at the bottom end, and the stable supporting operation of the steel wire rope 64 on the net cage body 4 at the bottom end is influenced; when the net rack 4 at the bottom end is required to slide up and down, the breeding personnel take the bolts down from the sealing cover 20, so that the bolts are separated from the fixation of the pressing plate 40, then the breeding personnel take the limiting clamping strip 30 out from the sliding groove 21, so that the limiting clamping strip 30 is separated from the clamping of the steel wire rope 64, and then the sliding retraction mechanism 6 drives the net rack 4 at the bottom end to slide up and down in the net box body 1.

As an embodiment of the present invention, the upper and lower outer side walls of the fixing support 2 are both provided with wear-resistant sealing rings 50, and a steel wire rope 64 is hermetically slid in the wear-resistant sealing rings 50; during operation, the wear-resistant sealing ring 50 arranged at the same time can reduce the sliding wear of the steel wire rope 64 and the fixed support 2, and simultaneously improve the sealing connection effect between the steel wire rope 64 and the fixed support 2, thereby preventing the water seepage phenomenon generated inside the fixed support 2.

The specific working process is as follows:

when the net cage body 1 is needed to be used, a breeding worker can fix the fixing pillars 2 at the four corners of the net cage body 1 to a breeding area, then the wiring end of the double-shaft motor 61 is connected to a connecting wire outside the net cage body 1 in an insulating and sealing mode, the double-shaft motor 61 can be powered in a solar power generation mode, the breeding worker puts aquatic products needing to be bred into the net cage body 1, and the filter screen 5 can prevent the aquatic products from escaping from the net cage body 1; when aquatic products in the net cage body 1 are cultured to be mature, a culturing person can control the double-shaft motors 61 in the four fixed supporting columns 2 to synchronously rotate clockwise through the controller, an output shaft at the upper end of each double-shaft motor 61 can drive the wire stranding cylinders 63 to wind the steel wire ropes 64, an output shaft at the lower end of each double-shaft motor 61 can drive the driving gears 65 to rotate through the rotating shafts 62, the driven gears 67 meshed with the driving gears 65 synchronously rotate anticlockwise, the steel wire ropes 64 wound on the wire stranding cylinders 63 fixedly arranged on the rotating columns 66 can be discharged, the culturing person can control the double-shaft motors 61 in the plurality of fixed supporting columns 2 to synchronously rotate clockwise through the controller, the wire stranding cylinders 63 above the fixed supporting columns 2 can wind and wind the steel wire ropes 64, the winding of the steel wire ropes 64 can pull the net frame 4 at the bottom end to slide upwards along the side wall of the net cage body 1, aquatic products cultured in the net cage body 1 can be upwards gathered to the upper port of the net cage body 1, and then the aquatic products cultured in the net cage body 1 by the culture personnel can be conveniently and quickly collected and fished out.

In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A net cage for aquaculture, which comprises a net cage body (1); the method is characterized in that: the net cage body (1) comprises a fixed pillar (2), a side net rack (3), a bottom net rack (4) and a filter screen (5); the fixed pillars (2) are respectively arranged at four corners of the net cage body (1); a side net rack (3) is arranged between every two adjacent fixed pillars (2); a filter screen (5) is fixed on the side net rack (3), and a supporting strip is fixed on the inner wall of the bottom end of the side net rack (3); sliding blocks (41) are arranged at four corners of the bottom net rack (4), and each sliding block (41) is correspondingly inserted into a sliding groove (21) formed in the fixed support (2) in a sliding manner; the peripheral bottom end surface of the bottom end net rack (4) is slidably supported to the upper end surface of the supporting bar, and a filter screen (5) is fixed on the bottom end net rack (4); the net rack (4) at the bottom end slides up and down in the net box body (1) through a plurality of groups of sliding retraction mechanisms (6), and the sliding retraction mechanisms (6) are arranged in the fixed support columns (2); the sliding retraction jack (6) comprises a double-shaft motor (61), a rotating shaft (62), a wire stranding drum (63), a steel wire rope (64), a driving gear (65), a rotating column (66) and a driven gear (67); the double-shaft motor (61) is fixed inside the fixed support column (2), and the output ends of the double-shaft motor (61) are connected with rotating shafts (62); a wire twisting cylinder (63) is fixed on a rotating shaft (62) positioned at the upper end of the double-shaft motor (61), and a steel wire rope (64) is wound on the wire twisting cylinder (63); the bottom end of the steel wire rope (64) penetrates through the fixed strut (2) and is connected to the upper surface of the bottom-end net rack (4); a driving gear (65) is fixed on a rotating shaft (62) positioned at the lower end of the double-shaft motor (61), and a driven gear (67) is meshed with the driving gear (65); the rotating speeds of the driving gear (65) and the driven gear (67) are the same; the driven gear (67) is rotatably arranged in the fixed support column (2) through a rotating column (66), and a wire twisting cylinder (63) is fixedly sleeved on the rotating column (66); wire rope (64) is wound on the wire barrel (63) sleeved on the rotating column (66), and the end part of the wire rope (64) penetrates through the side wall below the fixed support column (2) to be connected to the bottom end face of the bottom net rack (4).

2. A net cage for aquaculture according to claim 1, characterized in that: a sliding cavity (42) is formed in the peripheral side wall of the bottom net rack (4), and an elastic raised column (7) is arranged in the sliding cavity (42) in a sliding mode through a spring; the outer wall of the elastic convex column (7) is provided with convex thorns (71), and the end part of the elastic convex column (7) is in sliding contact with meshes of a filter screen (5) arranged on the side net rack (3).

3. A net cage for aquaculture according to claim 2, characterized in that: a filter screen (5) arranged on the side net rack (3) is elastically connected with a pulling strip (8), and the outer end part of the pulling strip (8) penetrates through the fixed support (2) and is positioned at the lower end output shaft of the double-shaft motor (61); an elastic lug (81) is arranged at the end part of the pulling strip (8); the outer wall of a rotating shaft (62) at the lower end of the double-shaft motor (61) is provided with a plurality of extrusion convex blocks (9), and one side wall of each extrusion convex block (9) is in rotating extrusion contact with the other side wall of the elastic convex block (81).

4. A net cage for aquaculture according to claim 3, characterized in that: two ends of the side net rack (3) are provided with T-shaped sliding strips (10); the outer wall of the fixed support column (2) is provided with a T-shaped sliding groove (22), and the T-shaped sliding groove (22) is inserted with a T-shaped sliding strip (10) in a sliding manner; the upper sealing connection of the fixed support column (2) is provided with a sealing cover (20), and the bottom end face of the sealing cover (20) is extruded to the upper end face of the T-shaped sliding strip (10) through an extrusion block.

5. A net cage for aquaculture according to claim 4, characterized in that: a limiting clamping strip (30) is inserted in the sliding groove (21) in a sliding manner, and a clamping groove (301) is formed in the side wall of the limiting clamping strip (30); the clamping groove (301) is clamped to the outer wall of the steel wire rope (64) in an extruding mode; the upper end face of the limiting clamping strip (30) is provided with a pressing plate (40), and the pressing plate (40) is connected to the sealing cover (20) through bolts and threads.

6. A net cage for aquaculture according to claim 1, characterized in that: the upper outer wall and the lower outer wall of the fixed support column (2) are both provided with wear-resistant sealing rings (50), and steel wire ropes (64) are arranged in the wear-resistant sealing rings (50) in a sealing and sliding mode.