CN113925013A

CN113925013A - Fish fry screening and cultivating pool for fishery and fish fry screening and cultivating method

Info

Publication number: CN113925013A
Application number: CN202111239764.2A
Authority: CN
Inventors: 吴东华
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-01-14

Abstract

The invention belongs to the field of fry and fingerling breeding, and relates to a fry screening and cultivating pool and a fry screening and cultivating method for fishery. The invention is suitable for fry breeding, and after the fry is bred, in order to improve the activity of the fry, a vortex is generated in the fish pond to promote water flow, so that the fish is ensured to keep moving in the fish pond, meanwhile, the fish pond is continuously screened, dead fish is screened, the water quality is prevented from being influenced, meanwhile, fish manure in the fish pond is cleaned, when water needs to be changed, the fry is separated from a water outlet, and the fry is ensured not to be influenced by negative pressure suction.

Description

Fish fry screening and cultivating pool for fishery and fish fry screening and cultivating method

Technical Field

The invention belongs to the field of fry and fingerling breeding, and particularly relates to a fry screening and breeding pond for fishery and a breeding method.

Background

As is known, after the fry are hatched, the fry need to be cultivated to a certain specification before being released on the water. In order to improve the culture benefit, artificial cultivation is mostly adopted at present, and not only the water quality but also the water temperature needs to be kept. However, the biggest problem of indoor cultivation is that pond discharging materials and baits of the fries in the cultivation process pollute water quality and generate a large amount of ammonia nitrogen, if the fries are not treated in time, the fries die or even explode, the survival rate of the fries is low, the requirements on the water quality are high, the fries are cultivated in batches, meanwhile, the death of the fries also influences the water quality, the fries do not move for a long time and influence the activity of the fries in the cultivation process, therefore, in order to improve the survival rate of the fries and reduce the workload of cultivation personnel, the fries can be fished out immediately when the fries die, the water quality is prevented from being influenced continuously, meanwhile, when the cultivation pond is changed with water, the fragile fries are damaged due to the fact that water suction is prevented from pumping, and the fries need to be protected as much as possible.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a fry screening and cultivating pool and a fry screening and cultivating method for fishery.

The purpose of the invention can be realized by the following technical scheme: a fry screening and cultivating pool for fishery and a fry screening and cultivating method thereof comprise a shell, wherein an electromagnetic chute is fixedly arranged on the annular wall of the lower side of the shell, two electromagnetic sliding blocks which are bilaterally symmetrical are arranged in the electromagnetic chute in a sliding manner, a cultivating cavity is fixedly arranged on the two electromagnetic sliding blocks, a separation cavity is arranged between the cultivating cavity and the shell, a plurality of scale outlets are fixedly arranged on the lower side wall of the cultivating cavity, a separation device is arranged on the lower side of the cultivating cavity and used for separating fish dung at the bottom of the pool and protecting fries in the draining process, a water changing port is fixedly arranged on the lower side wall of the shell and connected with a negative pressure suction pump, a drainage control device is arranged in the water changing port, two shaft fixing blocks are fixedly arranged on the annular wall of the upper side of the shell left and right, a counter-flow excitation device is arranged on the shaft fixing blocks and used for generating counter flow in the fish pool, improving the activity of the fry and increasing oxygen.

Preferably, excitation device against current sets up including rotating epaxial removal axle of epaxial fixed block, remove epaxial fixed removal wheel that is equipped with, it keeps away from to remove the axle the casing wall body is served and is fixed to be equipped with oblique oar, be equipped with dead fish sieving mechanism in the oblique oar, it is equipped with the annular chamber to cultivate the chamber upside, remove the axle and pass this intracavity, two racks of symmetry around fixed being equipped with on the lower lateral wall in this chamber, the rack with remove the wheel meshing.

Preferably, the dead fish screening device comprises a fish outlet arranged at the upper side of the inclined paddle, a fish inlet is arranged at the front side of the inclined paddle, an inclined drainage plate is fixedly arranged in the inclined paddle, the front side of the inclined drainage plate is communicated with the fish inlet, the inclined drainage plate is in an inclined state, a right fish falling pipe is fixedly arranged at the lower end of the inclined drainage plate, a dead fish pipe is fixedly arranged on the right side wall of the fish falling pipe, the dead fish pipe is communicated with the fish outlet, a containing chamber is fixedly arranged at the inner lower side of the inclined paddle, an electric control door is arranged on the containing chamber in an electrically controlled rotating manner, the containing chamber is positioned at the lower end of the opening at the lower side of the fish falling pipe, the left side and the right side in the inclined paddle are fixedly provided with live fish outlets, the lower side of the live fish outlet is in a normally open state, the electric control door can be abutted against the left side wall of the dead fish pipe after rotating upwards, so that the dead fish in the containing chamber enters the dead fish tube through the guiding of the electric control door.

Preferably, the inclined paddle is far away from the inclined plane of the side wall of the shell, a corrugated groove opening is formed in the inclined plane, an oxygen increasing device is arranged on the inclined plane, two dead fish collecting cavities with upward openings are fixedly arranged on the inner side wall of the cultivating cavity and on the front side and the rear side of the inner side wall of the cultivating cavity, and the dead fish collecting cavities are used for collecting dead fish falling out of the fish outlet.

Preferably, fixed being equipped with on the casing rampart stretches into the piece, it slides and is equipped with sealed commentaries on classics piece to cultivate the chamber downside, stretch into the piece with sealed commentaries on classics piece fixed connection, it passes through to stretch into the piece sealed commentaries on classics piece stretches into cultivate the intracavity, every stretches into fixedly on the piece and is equipped with the clean piece of wall, the clean piece of wall is used for cleaning cultivate the dirt on the intracavity lateral wall, the fixed solid ejector pin of motor that is equipped with on the clean piece of wall on right side, it is equipped with adjusting motor to rotate on the solid ejector pin of motor.

Preferably, separator is in including articulated the setting cultivate the hinge bar on the lateral wall under the chamber, be equipped with a plurality of holes on the hinge bar, be equipped with the screw thread axle on the output of accommodate motor, the fixed meshing piece that is equipped with on the hinge bar, the meshing piece with screw thread axle threaded connection, the screw thread axle stretches into downwards in the trade the water mouth, the fixed scraper blade that is equipped with of screw thread axle downside, the fixed slider connecting rod that is equipped with of screw thread axle lower extreme, trade the internal fixation of water mouth and be equipped with the regulation seal block, it is equipped with six sliders to slide on the regulation seal block, one of them slider with slider connecting rod fixed connection, it has two tensile hinge bars to articulate between two adjacent sliders, be equipped with sealed shrink board on the slider connecting rod.

Breed the fry and cultivate the intracavity, start the electromagnetism slider at electromagnetism spout internal rotation, it carries out the annular slip to drive to cultivate the chamber in the casing, the oblique oar is in the surface of water top, through the removal of cultivating the chamber, make the oblique oar dial the water and make the surface of water production swirl against the current of cultivating the intracavity, make the fry that cultivates the intracavity keep the motion as far as possible, improve the activity of fry, rivers are through the ripple hole on the oblique oar simultaneously, produce more flowers of water, the increase is with the contact guarantee oxygenation of air, oxygenator stirs with the surface of water contact, produce the flowers of water oxygenation.

When fish die and float on the water surface, the dead fish flows into the fish inlet along with the movement of the inclined paddle, flows downwards, flows out through the inclined drainage plate, falls into the fish falling pipe along with the gravity and the inclined plane of the inclined drainage plate, falls to the upper side of the electric control door through the fish falling pipe, if the live fish is carelessly rolled in, the live fish can struggle to fall into the live fish outlet and escapes downwards, the electric control door is started to rotate downwards at regular time, the dead fish falls into the containing chamber for collection, the rack starts to be in contact and meshed with the moving wheel along with the rotation of the cultivating chamber, the moving shaft rotates to drive the inclined paddle to turn over by one hundred eighty degrees, the electric control door is abutted against the side wall of the dead fish falling pipe along with the upward inclination of the gravity, the dead fish in the containing chamber just falls into the dead fish collecting chamber through the fish outlet downwards, the moving wheel is meshed and rotated with the rack continuously, and the inclined paddle rotates by one hundred eighty degrees continuously, and returning to the initial state. The fry body is relatively weak, the death rate is relatively high, and the dead fry can influence water quality by being not timely salvaged, so that the fry in the fish pond can be continuously ensured to be healthily survived, the breeding pond is replaced when live fishes are salvaged, and the fish is salvaged and screened as the dead fishes without manual monitoring.

Along with cultivate the rotation in chamber, the clean piece of wall scrapes the dirt of cultivating intracavity lateral wall, fish manure falls into in the play dirt mouth downwards, it is downward to the separation intracavity, when needs trade water to the fish pond, start adjusting motor, it is rotatory to drive the screw shaft, meshing piece, make the hinge bar rotatory brace downwards, reduce the space of fish school and cultivation intracavity lower lateral wall, the rotatory slider connecting rod that drives of screw shaft is rotatory simultaneously, make the slider slide in adjusting sealed piece, shrink sealed shrink board gradually, the scraper blade is rotatory along with the screw shaft simultaneously, to trading the mouth of a river lateral wall and descale, external pump starts, draw water, with the separation chamber and the rivers suction of cultivating the intracavity. Reduce the distance of shoal of fish and delivery port, avoid the negative pressure to absorb water the in-process and cause the injury to the shoal of fish, ensure the health of fry, oscillate fish dung simultaneously, avoid adhering to at the bottom of the pool, scrape brush clearance, the cleanliness of guarantee fish pond to fish pond lateral wall dirt.

In addition, the invention also provides a reserve type insulin pen with an automatic needle changing function and a using method thereof, wherein the reserve type insulin pen comprises the following steps:

s1, putting the fry and water into a cultivating cavity, and feeding the fry and the water with feed daily for cultivating and raising.

S2, the electromagnetic slide block is started to drive the cultivation cavity to rotate, so that the inclined paddle stirs the water surface to generate vortex backflow, the oxygen increasing device increases oxygen to the fish pond, and fish floating on the water surface can be salvaged through the fish inlet along with the movement of the inclined paddle.

And S3, screening the dead fish and the live fish, pouring the dead fish into the dead fish collecting cavity for collection when the inclined paddle moves to the position above the dead fish collecting cavity, and pouring the live fish into the cultivating cavity again for continuous cultivation.

S4: when water is needed to be changed, the adjusting motor is started to drive the threaded shaft to rotate, so that the sliding block connecting rod moves to shorten the distance between the fry and the water outlet, and simultaneously, the fish manure is discharged into the separation cavity to change water.

Compared with the prior art, the fry screening and cultivating pool and the fry screening and cultivating method for fishery have the following advantages:

1. and a countercurrent vortex is generated, so that the fry in the culture cavity keeps moving as much as possible, the activity of the fry is improved, meanwhile, water flow passes through the corrugated holes in the inclined paddles to generate more water blooms, the contact between the water flow and the air is increased to ensure oxygenation, and the oxygenator is stirred in contact with the water surface to generate water blooms oxygenation.

2. The fry body is relatively weak, the death rate is relatively high, and the dead fry can influence water quality by being not timely salvaged, so that the fry in the fish pond can be continuously ensured to be healthily survived, the breeding pond is replaced when live fishes are salvaged, and the fish is salvaged and screened as the dead fishes without manual monitoring.

3. Reduce the distance of shoal of fish and delivery port, avoid the negative pressure to absorb water the in-process and cause the injury to the shoal of fish, ensure the health of fry, oscillate fish dung simultaneously, avoid adhering to at the bottom of the pool, scrape brush clearance, the cleanliness of guarantee fish pond to fish pond lateral wall dirt.

Drawings

FIG. 1 is a schematic structural diagram of a fry screening and breeding pond for fishery and a breeding method.

Fig. 2 is a sectional view taken along a line a-a in fig. 1.

Fig. 3 is a sectional view taken along line B-B in fig. 1.

Fig. 4 is a sectional view taken along line C-C in fig. 3.

Fig. 5 is a sectional view taken along line D-D in fig. 1.

In the figure, 10, the housing; 11. a separation chamber; 12. an electromagnetic slider; 13. an electromagnetic chute; 14. a cultivation cavity; 15. a wall cleaning block; 16. extending the block; 17. sealing the rotary block; 18. a fish outlet; 19. a moving wheel; 20. a shaft fixing block; 21. a movable shaft; 22. an inclined paddle; 23. a fish inlet; 24. an oxygenator; 25. a hinged lever; 26. a scale outlet; 27. an engagement block; 28. adjusting the sealing block; 29. changing a water gap; 30. a squeegee; 31. a threaded shaft; 32. adjusting the motor; 33. a motor ejector pin is fixed; 34. a rack; 35. a dead fish collection chamber; 36. an electrically controlled door; 37. an inclined drainage plate; 38. a storage chamber; 39. a fish tube; 40. a dead fish tube; 41. stretching the hinged rod; 42. a slider; 43. a live fish outlet; 44. sealing the shrink plate; 45. a slider link.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in figure 1, a fish fry screening and cultivating pool for fishery and a fish fry screening and cultivating method thereof, which comprises a shell 10, an electromagnetic chute 13 is fixedly arranged on the annular wall of the lower side of the shell 10, two electromagnetic sliders 12 which are bilaterally symmetrical are slidably arranged in the electromagnetic chute 13, a cultivating cavity 14 is fixedly arranged on the two electromagnetic sliders 12, a separating cavity 11 is arranged between the cultivating cavity 14 and the shell 10, a plurality of scale outlets 26 are fixedly arranged on the lower side wall of the cultivating cavity 14, a separating device is arranged on the lower side of the cultivating cavity 14 and used for separating fish feces at the bottom of the pool and protecting fish fries in the water discharging process, a water changing port 29 is fixedly arranged on the lower side wall of the shell 10, a negative pressure suction pump is connected with the water changing port 29, a water discharging control device is arranged in the water changing port 29, two shaft fixing blocks 20 are fixedly arranged on the left side and the right side of the annular wall of the shell 10, a counter-flow excitation device is arranged on the shaft fixing blocks 20 and used for generating counter-flow in the fish pool, improving the activity of the fry and increasing oxygen.

As shown in fig. 1 and fig. 2, the countercurrent activating device includes a moving shaft 21 rotatably disposed on a shaft fixing block 20, a moving wheel 19 is fixedly disposed on the moving shaft 21, an inclined paddle 22 is fixedly disposed on an end of the moving shaft 21 away from a wall body of the housing 10, a dead fish screening device is disposed in the inclined paddle 22, an annular cavity is disposed on an upper side of the cultivation cavity 14, the moving shaft 21 penetrates through the cavity, two racks 34 are fixedly disposed on a lower side wall of the cavity, the racks 34 are symmetrical in a front-back direction, and the racks 34 are engaged with the moving wheel 19.

As shown in fig. 2, 3 and 4, the dead fish screening device comprises a fish outlet 18 arranged on the upper side of an inclined paddle 22, a fish inlet 23 is arranged on the front side of the inclined paddle 22, an inclined drainage plate 37 is fixedly arranged in the inclined paddle 22, the front side of the inclined drainage plate 37 is communicated with the fish inlet 23, the inclined drainage plate 37 is in an inclined state, a right fish falling pipe 39 is fixedly arranged on the lower end of the inclined drainage plate 37, a dead fish pipe 40 is fixedly arranged on the right side wall of the fish falling pipe 39, the dead fish pipe 40 is communicated with the fish outlet 18, a containing chamber 38 is fixedly arranged on the inner lower side of the inclined paddle 22, an electric control door 36 is electrically rotated on the containing chamber 38, the containing chamber 38 is positioned right below the opening of the lower side of the fish falling pipe 39, live fish outlets 43 are fixedly arranged on the left side and the right side of the inclined paddle 22, the lower side of the live fish outlet 43 is in a normally open state, after the electric control door 36 is rotated upwards, the electric control door 36 is abutted against the left side wall of the dead fish pipe 40, so that the dead fish in the receiving chamber 38 is guided into the dead fish duct 40 by the electrically controlled door 36.

As shown in fig. 1, the inclined surface of the inclined paddle 22 away from the side wall of the housing 10 is provided with a corrugated slot, the inclined surface is provided with an oxygenator 24, two dead fish collecting cavities 35 with upward openings are fixedly arranged on the front side and the rear side of the inner side wall of the cultivating cavity 14, and the dead fish collecting cavities 35 are used for collecting dead fish falling out of the fish outlet 18.

As shown in fig. 1, an extending block 16 is fixedly arranged on the circumferential wall of the housing 10, a sealing rotating block 17 is slidably arranged on the lower side of the cultivation cavity 14, the extending block 16 is fixedly connected with the sealing rotating block 17, the extending block 16 extends into the cultivation cavity 14 through the sealing rotating block 17, a wall cleaning block 15 is fixedly arranged on each extending block 16, the wall cleaning block 15 is used for cleaning dirt on the inner side wall of the cultivation cavity 14, a motor fixing ejector rod 33 is fixedly arranged on the wall cleaning block 15 on the right side, and an adjusting motor 32 is rotatably arranged on the motor fixing ejector rod 33.

As shown in fig. 1 and 5, the separating device includes a hinged rod 25 hinged to the lower side wall of the cultivation cavity 14, a plurality of holes are formed in the hinged rod 25, a threaded shaft 31 is arranged at the output end of the adjusting motor 32, an engaging block 27 is fixedly arranged on the hinged rod 25, the engaging block 27 is in threaded connection with the threaded shaft 31, the threaded shaft 31 extends downwards into the water changing port 29, a scraping plate 30 is fixedly arranged at the lower side of the threaded shaft 31, a slider connecting rod 45 is fixedly arranged at the lower end of the threaded shaft 31, an adjusting sealing block 28 is fixedly arranged in the water changing port 29, six sliders 42 are slidably arranged on the adjusting sealing block 28, one slider 42 is fixedly connected with the slider connecting rod 45, two stretching hinged rods 41 are hinged between two adjacent sliders 42, and a sealing contraction plate 44 is arranged on the slider connecting rod 45.

Breed the fry in breeding chamber 14, start electromagnetism slider 12 at 13 internal rotations of electromagnetism spout, drive and cultivate chamber 14 and carry out the annular slip in casing 10, oblique oar 22 is in the surface of water top, through the removal of breeding chamber 14, make oblique oar 22 dial the water and make the surface of water production swirl against the current in breeding chamber 14, make the fry in breeding chamber 14 keep the motion as far as possible, improve the activity of fry, rivers pass through the ripple hole on oblique oar 22 simultaneously, produce more flowers, the increase is with the contact guarantee oxygenation of air, oxygenator 24 stirs with the surface of water contact, produce flowers oxygenation.

When fish die and floats on the water surface, the dead fish flows into the fish inlet 23 and downwards along with the movement of the inclined paddle 22, water flows out through the inclined drainage plate 37, the dead fish falls into the fish falling pipe 39 along with the gravity and the inclined plane of the inclined drainage plate 37 and falls onto the upper side of the electric control door 36 through the fish falling pipe 39, if live fish is carelessly caught, the live fish can be pricked and fall into the live fish outlet 43 and escapes downwards, the electric control door 36 is started to rotate downwards at regular time, the dead fish falls into the containing chamber 38 and is collected, the rack 34 starts to be in contact engagement with the moving wheel 19 along with the rotation of the cultivating chamber 14, the moving shaft 21 rotates to drive the inclined paddle 22 to turn over by one hundred eighty degrees, the electric control door 36 abuts against the side wall of the dead fish pipe 40 along with the upward inclination of the gravity, the dead fish in the containing chamber 38 falls into the dead fish pipe 40 along with the gravity, the dead fish just falls into the dead fish collecting chamber 35 through the fish outlet 18 and is collected, the moving wheel 19 continues to be meshed with the rack 34, causing the diagonal paddles 22 to continue to rotate one hundred and eighty degrees back to the initial state. The fry body is relatively weak, the death rate is relatively high, and the dead fry can influence water quality by being not timely salvaged, so that the fry in the fish pond can be continuously ensured to be healthily survived, the breeding pond is replaced when live fishes are salvaged, and the fish is salvaged and screened as the dead fishes without manual monitoring.

Along with cultivate the rotation of chamber 14, clean piece 15 of wall scrapes the dirt of cultivating the intracavity wall 14 inside wall, fish manure falls into dirt mouth 26 downwards, it is downward in the separation chamber 11 to fall to, when needing to trade water to the fish pond, start adjusting motor 32, it is rotatory to drive threaded shaft 31, meshing engagement piece 27, make articulated rod 25 rotatory prop downwards, reduce the space of shoal of fish and cultivating chamber 14 lower wall, threaded shaft 31 is rotatory to drive slider connecting rod 45 rotatory simultaneously, make slider 42 slide in adjusting sealed piece 28, shrink sealed shrink plate 44 gradually, scraper blade 30 is rotatory along with threaded shaft 31 simultaneously, the scale removal is carried out to trading mouth of a river 29 lateral wall, external pump starts, draw water, with the rivers suction in separation chamber 11 and the cultivation chamber 14. Reduce the distance of shoal of fish and delivery port, avoid the negative pressure to absorb water the in-process and cause the injury to the shoal of fish, ensure the health of fry, oscillate fish dung simultaneously, avoid adhering to at the bottom of the pool, scrape brush clearance, the cleanliness of guarantee fish pond to fish pond lateral wall dirt.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A fry screening and cultivating pool for fishery and a fry screening and cultivating method comprise a shell (10) and are characterized in that an electromagnetic chute (13) is fixedly arranged on the annular wall of the lower side of the shell (10), two electromagnetic sliders (12) which are bilaterally symmetrical are slidably arranged in the electromagnetic chute (13), a cultivating cavity (14) is fixedly arranged on the two electromagnetic sliders (12), a separating cavity (11) is arranged between the cultivating cavity (14) and the shell (10), a plurality of scale outlets (26) are fixedly arranged on the lower side wall of the cultivating cavity (14), a separating device is arranged on the lower side of the cultivating cavity (14) and used for separating fish and excrement at the bottom of the pool and protecting fries in the draining process, a water changing port (29) is fixedly arranged on the lower side wall of the shell (10), a negative pressure suction pump is connected with the outside, and a draining control device is arranged in the water changing port (29), two shaft fixing blocks (20) are fixedly arranged on the annular wall on the upper side of the shell (10) in the left-right direction, a countercurrent excitation device is arranged on each shaft fixing block (20), and the countercurrent excitation device is used for generating countercurrent in a fish pond, so that the activity of the fry is improved, and oxygen is increased at the same time.

2. The fish fry screening and cultivating pool and method according to claim 1, wherein the fish fry screening and cultivating pool comprises: the countercurrent excitation device comprises a moving shaft (21) which is rotatably arranged on a shaft fixing block (20), a moving wheel (19) is fixedly arranged on the moving shaft (21), the moving shaft (21) is far away from the wall body of the shell (10) and is fixedly provided with an inclined paddle (22), a dead fish screening device is arranged in the inclined paddle (22), an annular cavity is arranged on the upper side of the cultivation cavity (14), the moving shaft (21) penetrates through the cavity, two racks (34) which are symmetrical front and back are fixedly arranged on the lower side wall of the cavity, and the racks (34) are meshed with the moving wheel (19).

3. The fish fry screening and cultivating pool and method according to claim 2, wherein the fish fry screening and cultivating pool comprises: the dead fish screening device comprises a fish outlet (18) arranged on the upper side of the inclined paddle (22), a fish inlet (23) is arranged on the front side of the inclined paddle (22), an inclined drainage plate (37) is fixedly arranged on the lower end of the inclined paddle (22), the front side of the inclined drainage plate (37) is communicated with the fish inlet (23), the inclined drainage plate (37) is in an inclined state, a right fish tube (39) is fixedly arranged on the lower end of the inclined drainage plate (37), a dead fish tube (40) is fixedly arranged on the right side wall of the fish tube (39), the dead fish tube (40) is communicated with the fish outlet (18), a containing chamber (38) is fixedly arranged on the inner lower side of the inclined paddle (22), an electric control rotating door (36) is arranged on the containing chamber (38), the containing chamber (38) is positioned at the lower end of the lower side of the fish tube (39), a live fish outlet (43) is fixedly arranged on the left side and the right side of the inclined paddle (22), the downside of live fish export (43) is normally open the form, automatically controlled door (36) upwards rotate the back, can with die fish pipe (40) left side wall butt for dead fish in collecting chamber (38) passes through the guide entering of automatically controlled door (36) in die fish pipe (40).

4. The fish fry screening and cultivating pool and method according to claim 3, wherein the fish fry screening and cultivating pool comprises the following steps: the inclined paddle (22) is far away from the inclined surface of the side wall of the shell (10), a corrugated groove opening is formed in the inclined surface, an oxygenator (24) is arranged on the inclined surface, two dead fish collecting cavities (35) with upward openings are fixedly arranged on the inner side wall of the cultivation cavity (14) at the front side and the rear side, and the dead fish collecting cavities (35) are used for collecting dead fish falling out of the fish outlet (18).

5. The fish fry screening and cultivating pool and method according to claim 4, wherein the fish fry screening and cultivating pool comprises: fixed being equipped with on casing (10) rampart stretches into piece (16), it slides and is equipped with sealed commentaries on classics piece (17) to cultivate chamber (14) downside, stretch into piece (16) with sealed commentaries on classics piece (17) fixed connection, stretch into piece (16) and pass through sealed commentaries on classics piece (17) stretch into in cultivating chamber (14), every stretches into on piece (16) and fixes being equipped with wall cleaning block (15), wall cleaning block (15) are used for cleanly cultivate the dirt on chamber (14) inside wall, the fixed solid ejector pin (33) of motor that are equipped with on wall cleaning block (15) on right side, it is equipped with adjusting motor (32) to rotate on the solid ejector pin (33) of motor.

6. The fish fry screening and cultivating pool and method according to claim 5, wherein the fish fry screening and cultivating pool comprises: the separating device comprises a hinged rod (25) hinged to the lower side wall of the cultivation cavity (14), a plurality of holes are formed in the hinged rod (25), a threaded shaft (31) is arranged at the output end of the adjusting motor (32), a meshing block (27) is fixedly arranged on the hinged rod (25), the meshing block (27) is in threaded connection with the threaded shaft (31), the threaded shaft (31) downwards extends into the water changing port (29), a scraping plate (30) is fixedly arranged on the lower side of the threaded shaft (31), a slider connecting rod (45) is fixedly arranged at the lower end of the threaded shaft (31), an adjusting sealing block (28) is fixedly arranged in the water changing port (29), six sliders (42) are slidably arranged on the adjusting sealing block (28), one slider (42) is fixedly connected with the slider connecting rod (45) in a hinged mode, and two stretching rods (41) are hinged between every two adjacent sliders (42), and a sealing contraction plate (44) is arranged on the sliding block connecting rod (45).

7. The fry screening and cultivating pond and the fry screening and cultivating method for fishery according to any one of claims 1 to 6, wherein: the method comprises the following steps:

s1, putting the fry and water into the cultivating cavity (14), and feeding the fry with feed daily for cultivating and raising.

S2, the electromagnetic slide block (12) is started to drive the cultivation cavity (14) to rotate, the inclined paddle (22) stirs the water surface to generate vortex backflow, the oxygen increasing device (24) increases oxygen for the fish pond, and fish floating on the water surface can be salvaged through the fish inlet (23) along with the movement of the inclined paddle (22).

S3, dead fish and live fish are screened, when the inclined paddle (22) moves to the position above the dead fish collecting cavity (35), the dead fish is poured into the dead fish collecting cavity (35) for collection, and the live fish is poured into the cultivating cavity (14) again for further cultivation.

S4: when water is needed to be changed, the adjusting motor (32) is started to drive the threaded shaft (31) to rotate, so that the sliding block connecting rod (45) moves, the distance between a fry and the water outlet is shortened, and meanwhile, fish manure is discharged into the separation cavity (11) to change water.