CN214801735U

CN214801735U - Automatic sturgeon grading culture pond

Info

Publication number: CN214801735U
Application number: CN202120821596.7U
Authority: CN
Inventors: 胡斌; 朱永安; 宋理平; 张媛媛; 刘峰; 张延华; 马国红; 吴君
Original assignee: Shandong Freshwater Fisheries Research Institute
Current assignee: Shandong Freshwater Fisheries Research Institute
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-11-23
Anticipated expiration: 2031-04-21

Abstract

The utility model discloses a pond is bred in automatic grading of sturgeon, including one-level pond, second grade pond and tertiary pond, the intercommunication has the inlet tube on the one-level pond outer wall bottom, tertiary pond outer wall upper end intercommunication has the outlet pipe, the one-level pond with the second grade pond and the second grade pond with be equipped with the sharing lateral wall between the tertiary pond, it leads to the groove to be equipped with hierarchical fence on one of them lateral wall of sharing lateral wall, hierarchical fence leads to the inslot and is equipped with the fence frame, be connected with two hierarchical fences that the specification model that can roll up and put is different on the fence frame. The utility model discloses utilize fish countercurrent characteristic and sturgeon to the demand of good quality of water, through set up removable hierarchical fence in breeding the pond to the flowing water amazing sturgeon moves about to the direction of intaking, and little specification and the hierarchical fence of medium specification sturgeon accessible get into second grade pond and one-level pond, realize the automatic classification of sturgeon in the artificial breeding, greatly reduced is because of the artifical adverse effect that divides the pond to cause.

Description

Automatic sturgeon grading culture pond

Technical Field

The utility model relates to a sturgeon culture pond specifically is a sturgeon automatic grading culture pond, belongs to aquaculture application.

Background

Sturgeon is one of the earliest vertebrates of existing origin and one of the most primitive groups in fish. Take Acipenser sinensis as an example, Acipenser sinensis (AclpenserSinensisGrdy) Is a large-scale migratory fish, which is a peculiar ancient rare fish in China.

The Chinese sturgeon has extremely high commodity value in aquatic products at home and abroad and has great economic significance. The leather can be used for making leather; the swimming bladder is called as the huso fish maw, contains rich colloid and has medicinal value; the meat taste is delicious; vertebra and nasal bone are first-class delicacies, and the theory of shark fin, sturgeon bone, prolonging life when eating, nourishing yin and tonifying yang is provided; the bone plate with the body surface formed by hard phosphorus is a material for manufacturing artware; the roe is the most famous and expensive, and the caviar prepared from the sturgeon roe has extremely high fat content and is regarded as one of the three treasures in the world. It is reported that the anticancer factor contained in Acipenser sinensis is 15 to 20 times of that of shark as main drug source. The Chinese sturgeon is a treasure, is a unique economic fish which is hard to obtain, and is the most important fishery object in the distribution area from ancient times.

Just because the Chinese sturgeons have the advantages, the Chinese sturgeons are damaged by being caught greatly, so that the wild Chinese sturgeons in nature are seriously damaged. Therefore, the research and development of the artificial culture of the Chinese sturgeons are actively carried out, and the reasonable development and utilization of the artificial culture have important effects on the sustainable growth of the Chinese sturgeons and the protection of the natural environment.

The pond division in the sturgeon culture process is necessary operation, the survival rate, the culture effect and the feed utilization rate can be effectively improved, the labor consumption required by manual pond division is large, the fish body cannot be damaged in the operation process, in addition, the pond division operation can frighten the fish and influence the later-stage feeding, and therefore the conventional manual pond division needs to be further improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sturgeon automatic grading culture pond for solving the problems.

The utility model discloses a following technical scheme realizes above-mentioned purpose, a pond is bred in sturgeon automatic grading, including one-level pond, second grade pond and tertiary pond, the intercommunication has the inlet tube on the one-level pond outer wall bottom, tertiary pond outer wall upper end intercommunication has the outlet pipe, the one-level pond with the second grade pond and the second grade pond with be equipped with the sharing lateral wall between the tertiary pond, the sharing lateral wall is frame rack structure, be connected with funnel type string bag on the sharing lateral wall, it leads to the groove to be equipped with hierarchical fence on one of them lateral wall of sharing lateral wall, hierarchical fence leads to the embedded fence frame that is equipped with of groove, be connected with two hierarchical fences that the model specification is different that can roll up and put on the fence frame.

Preferably, opposite horizontal plates are connected to the left end face and the right end face of the common side wall, opposite guide grooves are arranged on opposite faces of the left end face and the right end face of the common side wall and opposite faces of the two horizontal plates, the inner end surface of the other outer side wall of the common side wall in a closed structure is provided with a fence frame limiting groove, two pairs of thread grooves are arranged on the surface of the outer side wall of the grading fence through groove arranged on the common side wall, the side wall of one end of the fence frame is connected with a limiting post, the other end of the fence frame is connected with a fixing plate, two pairs of threaded pins and a pull ring are connected on the fixed plate, two pairs of pulleys are connected on the left side wall and the right side wall of the fence frame, the pulley inlays in the guide way, the screw pin spiral is fixed in the screw groove, the spacing post inlays in the fence frame spacing inslot, hierarchical fence is connected the inside upper surface of fence frame.

Preferably, the grading fence is connected with a rubber sealing frame in the through groove, two pairs of sliding grooves are formed in the opposite surfaces of the left side wall and the right side wall of the rubber sealing frame, the sliding grooves correspond to the guide grooves, a rubber sealing plug is connected between the fence frame and the fixing plate, two sliding groove sealing strips are connected to the left side wall and the right side wall of the rubber sealing plug, the rubber sealing plug is embedded in the rubber sealing frame, and the sliding groove sealing strips are embedded in the sliding grooves.

Preferably, be equipped with two relative perpendicular recesses and two pairs of relative rolling grooves on the wall relative face of fence frame left and right sides, be equipped with two horizontal grooves on the upper surface of fence frame bottom, roll the groove in the upper end of perpendicular recess and with perpendicular recess intercommunication, perpendicular recess with horizontal groove is linked together, both ends all are connected with the dead lever about the classification fence, be connected with the roll on the dead lever of classification fence upper end, the dead lever both ends of classification fence lower extreme are connected with the stopper, the roll inlays to be in rolling the inslot, the stopper inlays in the perpendicular recess.

Preferably, roll both ends and be open structure, roll the inslot and be connected with the spring post, the spring post other end and fix roll in the terminal surface, be equipped with two extrusion post recesses that are symmetrical structure on the stopper lateral wall, be equipped with two pairs of extrusion post on the fence frame upper surface and lead to groove and a pair of fixed pin recess, it is equipped with the stripper plate to inlay on the extrusion post leads to the groove, stripper plate both ends bottom all is connected with two extrusion posts, spiral connection has the fixed pin in the middle of the stripper plate, the extrusion post runs through extrusion post leads to groove and bottom and inlays in the extrusion post recess, the fixed pin spiral is fixed in the fixed pin recess.

Preferably, the diameter of the limiting block is larger than the diameter of the rollers at the two ends of the roller, and the distance between the two squeezing columns is larger than the diameter of the rollers at the two ends of the roller and smaller than the diameter of the limiting block.

Preferably, the grading fence is in a rail type structure or a grid type structure.

The utility model has the advantages that: the utility model discloses an automatic sturgeon grading culture pond, which has the following advantages,

1. by utilizing the countercurrent characteristic of fish and the requirement of sturgeons for good water quality, the sturgeons are stimulated to move in the water inlet direction by running water by arranging the replaceable grading fence in the culture pond, and the small-specification and medium-specification sturgeons can enter the secondary pond and the primary pond through the grading fence, so that the automatic grading of the sturgeons in artificial culture is realized, and the adverse effect caused by artificial pond separation is greatly reduced;

2. two grading fences which can be rolled and placed and have different apertures are arranged on each fence frame, the aperture specification of each grading fence is designed according to the shape characteristics of sturgeons, the grading fences with different specifications can be replaced according to the sizes of sturgeons in the culture process, the operation is simple, and the application range is wide;

3. the fence frame disclosed by the utility model is inserted between the two grading ponds from the side edges of the culture pond, compared with the traditional vertical insertion type fence frame, the side wall insertion type fence frame saves labor and is convenient to operate, can be completed by one person, and does not need to climb up the culture pond for operation;

4. the funnel-shaped net bag is additionally arranged on the shared side wall, the set position of the funnel-shaped net bag is opposite to the direction of water flow, and the funnel-shaped net bag can prevent sturgeons from swimming back to the second-level pool or the third-level pool.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is the schematic view of the sectional structure of the first-level tank and the second-level tank of the present invention.

Fig. 3 is a schematic view of the connection structure of the common sidewall and the rubber sealing frame of the present invention.

Fig. 4 is a schematic view of the connection structure of the classification fence and the fence frame of the present invention.

Fig. 5 is a schematic view of the connection structure of the classification fence and the rolling roller of the present invention.

Fig. 6 is a schematic view of the connection structure of the extruding column and the extruding plate of the present invention.

Fig. 7 is a schematic view of the rail-type classification fence according to the present invention.

In the figure: 1. the device comprises a primary tank, a secondary tank, a 3, a tertiary tank, a 4, a water inlet pipe, a 5, a water outlet pipe, a 6, a shared side wall, 8, an extrusion plate, 9, a funnel-shaped net bag, 10, a grading fence through groove, 11, a horizontal plate, 12, a guide groove, 13, a fence frame limiting groove, 14, a rubber sealing frame, 15, a sliding groove, 16, a threaded groove, 17, a fixing plate, 18, a threaded pin, 19, a rubber sealing plug, 20, a sliding groove sealing strip, 21, an extrusion column through groove, 22, a fixing pin groove, 23, a fixing pin, 24, a limiting column, 25, a pulley, 26, a grading fence, 27, a vertical groove, 28, a horizontal groove, 29, a spring column, 30, an extrusion column, 31, a fixing rod, 32, a limiting block, 33, an extrusion column groove, 34, a pull ring, 35, a rolling groove, 36, a fence frame, 37 and rolling.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner" and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Combine fig. 1, fig. 2 and fig. 4 to show, a pond is bred in automatic grading of sturgeon, including one-level pond 1, second grade pond 2 and tertiary pond 3, the intercommunication has inlet tube 4 on the 1 outer wall bottom in one-level pond, 3 outer wall upper end intercommunications in tertiary pond have outlet pipe 5, one-level pond 1 with second grade pond 2 and second grade pond 2 with be equipped with sharing lateral wall 6 between the tertiary pond 3, sharing lateral wall 6 is frame rack structure, be connected with funnel type string bag 9 on the sharing lateral wall 6, it leads to groove 10 to be equipped with hierarchical fence on one of them lateral wall of sharing lateral wall 6, hierarchical fence leads to the inslot 10 and embeds and is equipped with fence frame 36, be connected with the different hierarchical fence 26 of specification model that two can roll up and put on the fence frame 36.

In the in-process of trading water to one-level pond 1, second grade pond 2 and tertiary pond 3, select the hierarchical fence 26 that aperture specification suited according to sturgeon's size of body to with corresponding hierarchical fence 26 downwardly extending to operating condition, the drainage gets into in one-level pond 1 through inlet tube 4, discharge by outlet pipe 5 again, sturgeon in tertiary pond 3 and the second grade pond 2 flows through hierarchical fence 26 against the water and swims into in second grade pond 2 and the one-level pond 1, realizes sturgeon automatic classification.

The funnel-shaped net bag 9 is arranged in a direction opposite to the water flow direction, and the funnel-shaped net bag 9 can prevent sturgeons from swimming back to the second-stage pond 2 or the third-stage pond 3.

In the above embodiment, the funnel-shaped string bag 9 and the grading fence 26 are respectively wound with a sponge layer (not shown in the figure), so as to prevent the sturgeons from being scratched on the body surfaces when passing through the funnel-shaped string bag 9 or the grading fence 26, and protect the sturgeons; the four classification fences 26 on both fence frames 36 are all of different aperture sizes.

In the above embodiment, the primary tank 1, the secondary tank 2, and the tertiary tank 3 have the same model structure, and are of a regular hexagonal type or a regular octagonal type structure.

Referring to fig. 2, 3 and 4, opposite horizontal plates 11 are connected to left and right end faces of the shared side wall 6, opposite faces of the left and right end faces of the shared side wall 6 and opposite faces of the two horizontal plates 11 are respectively provided with opposite guide grooves 12, a fence frame limiting groove 13 is arranged on an inner end face of the other outer side wall of the shared side wall 6 in a closed structure, two pairs of thread grooves 16 are arranged on the surface of the outer side wall of the graded fence through groove 10 arranged on the shared side wall 6, a limiting column 24 is connected to one end side wall of the fence frame 36, a fixing plate 17 is connected to the other end of the fence frame 36, two pairs of thread pins 18 and a pull ring 34 are connected to the fixing plate 17, two pairs of pulleys 25 are connected to left and right side walls of the fence frame 36, the pulleys 25 are embedded in the guide grooves 12, the thread pins 18 are spirally fixed in the thread grooves 16, the limiting column 24 is embedded in the fence frame limiting groove 13, the classification fence 26 is attached to the inner upper surface of the fence frame 36.

Inserting the fence frame 36 into the grading fence through groove 10, embedding the pulley 25 into the guide groove 12, pushing the fence frame 36 forward until the limiting column 24 is embedded into the fence frame limiting groove 13, and fixing the fence frame 36 on the common side wall 6 by using the threaded pin 18; the threaded pin 18 is unscrewed, the tab 34 is snapped and the fastening plate 17 is pulled outwards, removing the fence frame 36 from the common side wall 6.

As shown in fig. 3 and 4, a rubber sealing frame 14 is connected in the grading fence through groove 10, two pairs of sliding grooves 15 are formed in the opposite surfaces of the left side wall and the right side wall of the rubber sealing frame 14, the sliding grooves 15 correspond to the guide grooves 12, a rubber sealing plug 19 is connected between the fence frame 36 and the fixing plate 17, two sliding groove sealing strips 20 are connected on the left side wall and the right side wall of the rubber sealing plug 19, the rubber sealing plug 19 is embedded in the rubber sealing frame 14, the sliding groove sealing strips 20 are embedded in the sliding grooves 15, the sealing performance between the fence frame 36 and the grading fence through groove 10 is improved, and water leakage is prevented.

As shown in fig. 4 and 5, two opposite vertical grooves 27 and two pairs of opposite rolling grooves 35 are formed in opposite surfaces of left and right side walls of the fence frame 36, two horizontal grooves 28 are formed in the upper surface of the bottom of the fence frame 36, the rolling grooves 35 are located at the upper ends of the vertical grooves 27 and communicated with the vertical grooves 27, the vertical grooves 27 are communicated with the horizontal grooves 28, fixing rods 31 are connected to the upper ends and the lower ends of the classification fence 26, rolling rollers 37 are connected to the fixing rods 31 at the upper ends of the classification fence 26, limit blocks 32 are connected to the two ends of the fixing rods 31 at the lower ends of the classification fence 26, the rolling rollers 37 are embedded in the rolling grooves 35, and the limit blocks 32 are embedded in the vertical grooves 27.

The grading fence 26 with proper aperture size is selected and the fixing rods 31 at the lower end of the grading fence 26 are pressed downwards until the fixing rods 31 at the lower end of the grading fence 26 are embedded in the horizontal grooves 28, and the limiting blocks 32 are always embedded in the vertical grooves 27 and move downwards along the vertical grooves 27 during the downward movement of the grading fence 26, so that the stability of the grading fence 26 during the downward movement is ensured.

Combine fig. 5 to show in fig. 6, roll 37 both ends and be open structure, it has spring post 29 to roll 35 in-connection of groove, the spring post 29 other end is fixed roll 37 in the terminal surface, be equipped with two extrusion post recesses 33 that are symmetrical structure on the stopper 32 lateral wall, it leads to groove 21 and a pair of fixed pin recess 22 to be equipped with two pairs of extrusion posts on the fence frame 36 upper surface, the extrusion post leads to and inlays on the groove 21 and be equipped with

stripper plate

8, 8 both ends bottoms of stripper plate all are connected with two extrusion posts 30, spiral connection has fixed pin 23 in the middle of the stripper plate 8, the extrusion post 30 runs through the extrusion post leads to groove 21 and the bottom inlays in the extrusion post recess 33, fixed pin 23 spiral fixing is in the fixed pin recess 22.

As shown in fig. 1 and 2, the upper surface of the common sidewall 6 is also provided with through holes corresponding to the extrusion column through groove 21 and the fixing pin groove 22.

The extrusion columns 30 penetrate through the extrusion column through grooves 21 and apply downward pressure to the extrusion plates 8, the extrusion columns 30 move downwards until the bottoms of the extrusion columns 30 are embedded in the extrusion column grooves 33, the extrusion plates 8 are continuously extruded downwards until fixing rods 31 at the lower ends of the classification fences 26 are embedded in the horizontal grooves 28, the extrusion plates 8 are fixed on the common side wall 6 by the fixing pins 23, and the spring columns 29 are in an extruded state; the fixing pin 23 is unscrewed and the extrusion plate 8 is slowly taken out, the spring column 29 is restored under the action of the elastic force and drives the rolling roller 37 to rotate, the grading fence 26 is curled upwards by the rolling roller 37 in the rotating process, and the grading fence 26 moves upwards and is wound on the rolling roller 37, so that the winding and unwinding operation of the grading fence 26 is realized.

In the above embodiment, the diameter of the limiting block 32 is greater than the diameter of the rollers at the two ends of the roller 37, the distance between the two squeezing posts 30 is greater than the diameter of the rollers at the two ends of the roller 37 and smaller than the diameter of the limiting block 32, and the squeezing post through groove 21 and the fixing pin groove 22 are located right above the roller 37.

As shown in fig. 7, the grading fence 26 has a rail structure or a grid structure.

The working principle is as follows:

inserting the fence frame 36 into the grading fence through groove 10, embedding the pulley 25 into the guide groove 12, pushing the fence frame 36 forward until the limiting column 24 is embedded into the fence frame limiting groove 13, embedding the rubber sealing plug 19 into the rubber sealing frame 14, embedding the chute sealing strip 20 into the chute 15, and fixing the fence frame 36 on the common side wall 6 by using the threaded pin 18;

selecting a grading fence 26 with a proper aperture size according to the specification of sturgeons, penetrating an extrusion column 30 through an extrusion column through groove 21 corresponding to the selected grading fence 26, applying downward pressure to an extrusion plate 8, moving the extrusion column 30 downwards until the bottom of the extrusion column 30 is embedded in an extrusion column groove 33, continuously extruding the extrusion plate 8 downwards until a fixing rod 31 at the lower end of the grading fence 26 is embedded in a horizontal groove 28, and fixing the extrusion plate 8 on a common side wall 6 by using a fixing pin 23;

can trade the operation of water to one-level pond 1, second grade pond 2 and tertiary pond 3 this moment, the drainage gets into in one-level pond 1 through inlet tube 4, is discharged by outlet pipe 5 again, and sturgeon counter current flow in tertiary pond 3 flows through hierarchical fence 26 and swims into in second grade pond 2 and the one-level pond 1, and sturgeon counter current flow in second grade pond 2 flows through hierarchical fence 26 and swims into in one-level pond 1, realizes sturgeon automatic classification.

When replacing the grading fence 26 with different aperture specifications, the grading fence 26 for replacement is firstly extruded downwards to a working state, then the extrusion plate 8 on the replaced grading fence 26 is taken out, the spring column 29 connected on the replaced grading fence 26 restores the original position under the action of the elastic force and drives the rolling roller 37 to rotate, and the rolling roller 37 curls the replaced grading fence 26 upwards and winds the rolling roller 37 in the rotating process, so that the replacement operation of the grading fence 26 is completed.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a pond is bred in automatic grading of sturgeon which characterized in that: including one-level pond (1), second grade pond (2) and tertiary pond (3), the intercommunication has inlet tube (4) on one-level pond (1) outer wall bottom, tertiary pond (3) outer wall upper end intercommunication has outlet pipe (5), one-level pond (1) with second grade pond (2) and second grade pond (2) with be equipped with shared lateral wall (6) between tertiary pond (3), shared lateral wall (6) are frame rack structure, be connected with funnel type string bag (9) on shared lateral wall (6), be equipped with hierarchical fence logical groove (10) on one of them lateral wall of shared lateral wall (6), hierarchical fence leads to the groove (10) and embeds and is equipped with fence frame (36), be connected with hierarchical fence (26) that two specification models that can roll up are different on fence frame (36).

2. The sturgeon automatic grading culture pond according to claim 1, characterized in that: the utility model discloses a fence, including sharing lateral wall (6), be connected with relative horizontal plate (11) on the both ends face about sharing lateral wall (6), all be equipped with relative guide way (12) on the opposite face of both ends face and two horizontal plate (11) about sharing lateral wall (6), be equipped with fence frame spacing groove (13) on another lateral wall inner end face that is enclosed construction of sharing lateral wall (6), be equipped with two pairs of thread grooves (16) on the lateral wall surface that hierarchical fence led to groove (10) on sharing lateral wall (6), be connected with spacing post (24) on the lateral wall of fence frame (36) one end, be connected with fixed plate (17) on the other end, be connected with two pairs of thread round pins (18) and a pull ring (34) on fixed plate (17), be connected with two pairs of pulley (25) on the both sides wall about fence frame (36), pulley (25) inlay in guide way (12), the threaded pin (18) is spirally fixed in the threaded groove (16), the limiting column (24) is embedded in the fence frame limiting groove (13), and the grading fence (26) is connected to the upper surface inside the fence frame (36).

3. The sturgeon automatic grading culture pond according to claim 2, characterized in that: hierarchical fence logical groove (10) in-connection has rubber seal frame (14), be equipped with two pairs of spout (15) on the relative face of two lateral walls about rubber seal frame (14), spout (15) with guide way (12) are corresponding, fence frame (36) with be connected with rubber sealing plug (19) between fixed plate (17), be connected with two spout sealing strips (20) on the wall of rubber sealing plug (19) left and right sides, rubber sealing plug (19) inlay in rubber seal frame (14), spout sealing strip (20) inlay in spout (15).

4. An automatic grading culture pond for sturgeons according to claim 1 or claim 2, characterized in that: be equipped with two relative perpendicular recesses (27) and two pairs of relative rolling grooves (35) on the wall relative surface of fence frame (36) left and right sides, be equipped with two horizontal grooves (28) on the wall upper surface of fence frame (36) bottom, rolling groove (35) are located the upper end of perpendicular recess (27) and with perpendicular recess (27) intercommunication, perpendicular recess (27) with horizontal groove (28) are linked together, both ends all are connected with dead lever (31) about hierarchical fence (26), be connected with on dead lever (31) of hierarchical fence (26) upper end and roll (37), dead lever (31) both ends of hierarchical fence (26) lower extreme are connected with stopper (32), roll (37) inlay in rolling groove (35), stopper (32) inlay in perpendicular recess (27).

5. The sturgeon automatic grading culture pond according to claim 4, characterized in that: roll (37) both ends and be open structure, roll groove (35) in-connection has spring post (29), spring post (29) other end is fixed roll (37) terminal surface in, be equipped with two extrusion post recesses (33) that are symmetrical structure on stopper (32) lateral wall, be equipped with two pairs of extrusion post on fence frame (36) upper surface and lead to groove (21) and a pair of fixed pin recess (22), the extrusion post leads to and inlays on groove (21) and is equipped with stripper plate (8), stripper plate (8) both ends bottom all is connected with two extrusion posts (30), spiral connection has fixed pin (23) in the middle of stripper plate (8), extrusion post (30) run through the extrusion post leads to groove (21) and bottom and inlays in extrusion post recess (33), fixed pin (23) spiral fixing in fixed pin recess (22).

6. The sturgeon automatic grading culture pond according to claim 5, characterized in that: the diameter of the limiting block (32) is larger than the diameter of the rolling shafts at the two ends of the rolling roller (37), and the distance between the two squeezing columns (30) is larger than the diameter of the rolling shafts at the two ends of the rolling roller (37) and smaller than the diameter of the limiting block (32).

7. An automatic grading culture pond for sturgeons according to claim 1 or claim 2, characterized in that: the grading fence (26) is of a rail type structure or a grid type structure.