CN111096261A

CN111096261A - Shell farming equipment

Info

Publication number: CN111096261A
Application number: CN201911266553.0A
Authority: CN
Inventors: 杨啸峰; 杨云霞
Original assignee: Zhejiang Ocean University ZJOU
Current assignee: Zhejiang Ocean University ZJOU
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-05-05

Abstract

The invention provides shell culture equipment, and belongs to the technical field of shell culture equipment. The invention comprises a first fixed column, a second fixed column, an upper connecting rod, a lower connecting rod, a conveying pipe, a net cage and a driving mechanism, wherein the upper connecting rod is horizontally and fixedly arranged at the tops of the first fixed column and the second fixed column, the lower connecting rod is horizontally and fixedly arranged on the first fixed column and the second fixed column, the conveying pipe is horizontally and fixedly arranged on the lower connecting rod through a support frame, a second rotating shaft is coaxially and rotatably arranged in the conveying pipe, a spiral guide groove is fixedly arranged on the second rotating shaft, the net cage is vertically and fixedly arranged between the first fixed column and the second fixed column, a plurality of filter screen plates are arranged in the net cage, a conical pipe is arranged below each filter screen plate, a sewage cavity is formed between each conical pipe and each filter screen plate, a sewage main pipe is vertically and fixedly arranged on the conveying pipe, the sewage cavity is. The invention can discharge the sewage in the net cage by using wave energy, thereby improving the culture yield.

Description

Shell farming equipment

Technical Field

The invention belongs to the technical field of shell culture equipment, and relates to shell culture equipment.

Background

Aquatic products such as shellfish (for example, scallops) are cultured by a net cage suspended in water in a floating manner, in order to improve the culture yield, a plurality of independent culture spaces are usually isolated from the net cage from top to bottom by partition plates, and a certain amount of shellfish is cultured in each culture space.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides shell culture equipment which utilizes wave energy to discharge sewage with excrement in a net cage, so that the culture yield is improved.

The purpose of the invention can be realized by the following technical scheme:

the shell breeding equipment comprises a first fixing column and a second fixing column, wherein the first fixing column and the second fixing column are both vertically arranged;

the upper connecting rod is horizontally and fixedly arranged at the tops of the first fixing column and the second fixing column, the lower connecting rod is horizontally and fixedly arranged on the first fixing column and the second fixing column, and the lower connecting rod is positioned under the upper connecting rod;

the conveying pipe is horizontally and fixedly arranged on the lower connecting rod through a supporting frame, one end of the conveying pipe is provided with a sealing plate, the other end of the conveying pipe is communicated with the outside, a second rotating shaft is coaxially and rotatably arranged in the conveying pipe, and a spiral guide groove is fixedly arranged on the second rotating shaft;

a plurality of box with a net, a plurality of the box with a net is all vertical to set firmly between first fixed column and second fixed column, the box with a net is cylindricly, be equipped with the cavity in the box with a net, the box with a net has: the filter screen plates divide the cavity into a plurality of culture cavities from top to bottom; the plurality of conical pipes are fixedly arranged in the net cage, the plurality of conical pipes correspond to the plurality of filter screen plates one by one, the conical pipes are positioned below the corresponding filter screen plates, and a sewage cavity is formed between each conical pipe and each filter screen plate; the sewage main pipe is vertically arranged on the conveying pipe, the sewage main pipe is communicated with the conveying pipe, and the sewage cavity is communicated with the sewage main pipe through a sewage branch pipe;

and the driving mechanism is arranged on the first fixed column and can drive the second rotating shaft to rotate by utilizing waves.

In the above-described shell farming equipment, the drive mechanism includes:

the connecting plate is hinged to the left side face of the first fixing column through a first hinge shaft;

the buoy is fixedly connected with the connecting plate through a connecting rod;

the first rotating shaft is rotatably arranged on the front side surface of the first fixing column through a shaft plate, the first rotating shaft is parallel to the front side surface of the first fixing column, and a ratchet wheel is fixedly arranged at the left end of the first rotating shaft;

the first pawl and the second pawl are hinged to the connecting plate, the first pawl is located above the second pawl, the end portion of the first pawl is inserted into teeth of the ratchet wheel, the end portion of the second pawl is inserted into the teeth of the ratchet wheel, when the buoy rotates upwards around the first hinge shaft, the first pawl pushes the ratchet wheel to rotate clockwise, the second pawl rotates anticlockwise along the tooth edge of the ratchet wheel, when the buoy rotates downwards around the first hinge shaft, the second pawl pushes the ratchet wheel to rotate clockwise, and the first pawl rotates anticlockwise along the tooth edge of the ratchet wheel;

the transmission structure is arranged on the first rotating shaft and can drive the second rotating shaft to rotate.

In the above-mentioned shell farming equipment, the transmission structure includes:

the first chain wheel is fixedly arranged at the right end of the first rotating shaft;

the left end of the second rotating shaft penetrates out of the sealing plate, the end part of the second rotating shaft is fixedly connected with the second chain wheel, and the second chain wheel is connected with the first chain wheel through chain transmission.

In the above-mentioned shell farming equipment, the sewage branch pipe includes standpipe and pipe chute, the standpipe sets firmly in the lower extreme of conical tube, the one end of pipe chute links firmly with the lower extreme of standpipe, and the other end slope is downwards and is linked to each other with the sewage house steward.

In foretell shell farming equipment, coaxial rotation is provided with the third pivot in the box with a net, the third pivot rotates with filter plate, pipe chute and sets up, the upper end of third pivot is worn out the box with a net top and the tip sets firmly the guide plate, the axial direction of guide plate and third pivot is parallel, be equipped with the suction structure in the standpipe, the suction structure can utilize the rotation of third pivot to pump the sewage in the sewage cavity to the pipe chute in.

In the above-mentioned shell farming equipment, the suction structure includes an impeller, the impeller is coaxially and fixedly arranged on the third rotating shaft, and the impeller is located in the vertical pipe.

In foretell shell farming equipment, the sewage intracavity is equipped with the clearance structure, the clearance structure can utilize the rotation of third pivot to clear up the attachment on the filter plate.

In the above-mentioned shell farming equipment, the cleaning structure includes:

a plurality of dwang, a plurality of the dwang sets firmly in the third pivot along circumference, be equipped with the brush on the dwang, the upper end of brush contacts with the downside that filters the otter board.

In the shell farming equipment, the upper end of the third rotating shaft is rotatably arranged on the upper connecting rod, the lower end of the third rotating shaft penetrates through the net cage, and the end part of the third rotating shaft is rotatably arranged on the lower connecting rod.

Compared with the prior art, the invention has the following advantages:

1. the shells are respectively placed on the filter screen plates in the plurality of culture cavities, excrement of the shells falls into the sewage cavity, the driving mechanism drives the second rotating shaft to rotate under the action of waves, the spiral guide groove on the second rotating shaft rotates, sewage in the conveying pipe is extruded out, negative pressure is generated in the conveying pipe, the sewage in the sewage cavity flows into the main sewage pipe through the branch sewage pipe, then is sucked into the conveying pipe and is conveyed to the outside through the spiral guide groove, and due to more sea waves, the sewage and the excrement in the sewage cavity can be continuously sucked, the water quality in the net cage is improved, and the culture yield of the shells is improved;

2. when the wave drives the buoy to float upwards around the first articulated shaft, the connecting rod and the connecting plate are driven to rotate upwards, so that the first pawl on the connecting plate pushes the ratchet wheel to rotate clockwise, the second pawl rotates anticlockwise along the tooth edge of the ratchet wheel, when the wave drives the buoy to float downwards around the first articulated shaft, the connecting rod and the connecting plate are driven to rotate downwards, the second pawl on the connecting plate pushes the ratchet wheel to rotate clockwise, the first pawl rotates anticlockwise along the tooth edge of the ratchet wheel, the ratchet wheel and the first rotating shaft are always driven to rotate clockwise through the up-and-down floating of the wave, the first rotating shaft drives the second rotating shaft to rotate through the transmission structure, the spiral guide groove on the second rotating shaft is driven to rotate, and sewage in the conveying pipe is discharged;

3. the first rotating shaft rotates to drive the first chain wheel to rotate, and the chain drives the second chain wheel and the second rotating shaft to rotate, so that the spiral guide groove on the second rotating shaft rotates, the structure is simple, and the transmission efficiency is high;

4. when waves impact the guide plate, a lateral thrust is given to the guide plate to enable the guide plate to rotate, when the guide plate rotates to be consistent with the wave direction, the guide plate stops rotating after losing the lateral thrust, the guide plate drives the third rotating shaft and the impeller to rotate while rotating, and the impeller sucks sewage in the sewage cavity into the inclined tube, so that the sewage discharge efficiency is improved; in addition, the third pivot drives a plurality of dwang and rotates, and the attachment on the filter plate is clear away to the brush on the dwang, avoids filter screen mesh on the board to filter the hole and is blockked up by the attachment, makes the excrement can't pass filter screen board and drops to the sewage intracavity, leads to breeding the quality of water deterioration in the intracavity, reduces and breeds output.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken at B-B of FIG. 2;

fig. 4 is a cross-sectional view at C-C in fig. 2.

In the figure, 1, a first fixing column; 11. a second fixed column; 111. an upper connecting rod; 112. A lower connecting rod; 12. a middle connecting rod; 13. a float bowl; 131. a connecting rod; 132. a connecting plate; 133. a first pawl; 134. a second pawl; 135. a first hinge shaft; 14. a ratchet wheel; 141. a shaft plate; 142. a first rotating shaft; 143. a first sprocket; 2. a delivery pipe; 21. Closing the plate; 22. a second rotating shaft; 23. a second sprocket; 24. a support frame; 3. a third rotating shaft; 31. a baffle; 4. a net cage; 41. a filter screen plate; 411. a culture cavity; 42. a tapered tube; 421. a sewage chamber; 43. a sewage branch pipe; 431. a vertical tube; 432. an inclined tube; 44. a main sewage pipe.

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 fig. 1 to 4, a shell cultivation device includes a first fixing column 1, a second fixing column 11, an upper connecting rod 111, a lower connecting rod 112, a conveying pipe 2, a plurality of net cages 4 and a driving mechanism.

First fixed column 1 and second fixed column 11 all vertically set up in aqueous.

The upper connecting rod 111 is horizontally and fixedly arranged at the tops of the first fixed column 1 and the second fixed column 11, the lower connecting rod 112 is horizontally and fixedly arranged on the first fixed column 1 and the second fixed column 11, the lower connecting rod 112 is positioned under the upper connecting rod 111, and the lower connecting rod 112 is positioned under the water surface.

Conveyer pipe 2 sets firmly on lower connecting rod 112 through support frame 24 level, the one end of conveyer pipe 2 is equipped with shrouding 21, and the other end is linked together with the external world, coaxial rotation is provided with second pivot 22 in the conveyer pipe 2, set firmly spiral guide way 221 on the second pivot 22.

A plurality of box with a net 4 all sets firmly evenly between first fixed column 1 and second fixed column 11 through intermediate junction pole 12 interval, box with a net 4 is cylindricly, be equipped with the cavity in the box with a net 4, box with a net 4 has: the filter net plates 41 are sequentially arranged in the net cage 4 from top to bottom, and the cavity is divided into a plurality of culture cavities 2 by the filter net plates 41; the plurality of conical tubes 42 are fixedly arranged in the net cage 4, the plurality of conical tubes 42 correspond to the plurality of filter screen plates 41 one by one, the conical tubes 42 are positioned below the corresponding filter screen plates 41, and a sewage cavity 421 is formed between each conical tube 42 and each filter screen plate 41; the sewage main pipe 44 is vertically arranged on the conveying pipe 2, the sewage main pipe 44 is communicated with the conveying pipe 2, and the sewage cavity 421 is communicated with the sewage main pipe 44 through the sewage branch pipe 43.

The driving mechanism is arranged on the first fixing column 1, and the driving mechanism can drive the second rotating shaft 22 to rotate by utilizing waves.

The shells are respectively put on the filter screen plates 41 in the culture cavities 411, the excrement of the shells falls into the sewage cavity 421, under the action of waves, the driving mechanism drives the second rotating shaft 22 to rotate, the spiral guide groove 221 on the second rotating shaft 22 rotates, the water in the conveying pipe 2 is extruded out, negative pressure is generated in the conveying pipe 2, the sewage in the sewage cavity 421 flows into the sewage main pipe 44 through the sewage branch pipe 43 and is sucked into the conveying pipe 2, and the sewage and the excrement in the sewage cavity 421 can be continuously sucked through the spiral guide groove 221 due to frequent sea storms, the water quality in the net cage 4 is improved, and the culture yield of the shellfishes is improved.

Specifically, the drive mechanism includes a connecting plate 132, a pontoon 13, a first rotating shaft 142, a first pawl 133, a second pawl 134, and a transmission structure.

The connecting plate 132 is hinged on the left side of the first fixing column 1 by a first hinge shaft 135.

The buoy 13 is fixedly connected with a connecting plate 132 through a connecting rod 131.

The first rotating shaft 142 is rotatably arranged on the front side surface of the first fixed column 1 through a shaft plate 141, the first rotating shaft 142 is parallel to the front side surface of the first fixed column 1, and a ratchet 14 is fixedly arranged at the left end of the first rotating shaft 142.

The first pawl 133 and the second pawl 134 are hinged to the connecting plate 132, the first pawl 133 is located above the second pawl 134, the end of the first pawl 133 is inserted into the tooth of the ratchet 14, the end of the second pawl 134 is inserted into the tooth of the ratchet 14, when the float 13 rotates upward around the first hinge shaft 135, the first pawl 133 pushes the ratchet 14 to rotate clockwise, the second pawl 134 rotates counterclockwise along the tooth of the ratchet 14, when the float 13 rotates downward around the first hinge shaft 135, the second pawl 134 pushes the ratchet 14 to rotate clockwise, and the first pawl 133 rotates counterclockwise along the tooth of the ratchet 14.

The transmission structure is disposed on the first rotating shaft 142, and the transmission structure can drive the second rotating shaft 22 to rotate.

When the wave drives the buoy 13 to float upwards around the first hinge shaft 135, the connecting rod 131 and the connecting plate 132 are driven to rotate upwards, so that the first pawl 133 on the connecting plate 132 pushes the ratchet wheel 14 to rotate clockwise, the second pawl 134 rotates anticlockwise along the tooth edge of the ratchet wheel 14, when the wave drives the buoy 13 to float downwards around the first hinge shaft 135, the connecting rod 131 and the connecting plate 132 are driven to rotate downwards, the second pawl 134 on the connecting plate 132 pushes the ratchet wheel 14 to rotate clockwise, the first pawl 133 rotates anticlockwise along the tooth edge of the ratchet wheel 14, the ratchet wheel 14 and the first rotating shaft 142 are driven to rotate clockwise all the time through the up-and-down floating of the wave, the first rotating shaft 142 drives the second rotating shaft 22 to rotate through a transmission structure, the spiral guide groove 221 on the second rotating shaft 22 rotates, and sewage in the conveying pipe 2 is discharged, the structure is simple, and the sewage discharge.

Specifically, the transmission structure includes a first sprocket 143 and a second sprocket 23.

The first sprocket 143 is fixedly disposed at the right end of the first rotating shaft 142.

The left end of the second rotating shaft 22 penetrates through the closing plate 21 and the end part of the second rotating shaft is fixedly connected with the second chain wheel 23, and the second chain wheel 23 and the first chain wheel 143 are in transmission connection through a chain 231.

The first rotating shaft 142 rotates to drive the first chain wheel 143 to rotate, and the chain 231 drives the second chain wheel 23 and the second rotating shaft 22 to rotate, so that the spiral guide groove 221 on the second rotating shaft 22 rotates, the structure is simple, and the transmission efficiency is high.

Specifically, the branched sewage pipe 43 includes a vertical pipe 431 and an inclined pipe 432, the vertical pipe 431 is fixedly installed at the lower end of the tapered pipe 42, one end of the inclined pipe 432 is fixedly connected to the lower end of the vertical pipe 341, and the other end is connected to the main sewage pipe 44 in an inclined manner.

Due to the arrangement of the tapered pipe 42, excrement in the sewage cavity 421 slides downwards into the vertical pipe 431, and the inclined pipe 432 is arranged downwards in an inclined mode, so that the flowing speed of sewage is increased, the inclined pipe 432 is prevented from being blocked by the excrement in the sewage, the sewage in the inclined pipe 432 smoothly flows into the conveying pipe 2 through the sewage main pipe 44, the discharging speed of the sewage is increased, and the quality of the water in the breeding cavity 411 is improved.

Specifically, a third rotating shaft 3 is coaxially and rotatably arranged in the net cage 4, the third rotating shaft 3, the filter screen plate 41 and the inclined tube 432 are rotatably arranged, the upper end of the third rotating shaft 3 penetrates through the top of the net cage 4, the end part of the third rotating shaft is fixedly provided with a guide plate 31, the guide plate 31 is axially parallel to the third rotating shaft 3, a suction structure is arranged in the vertical tube 431, and the suction structure can suck the sewage in the sewage cavity 421 into the inclined tube 432 by utilizing the rotation of the third rotating shaft 3.

The wave strikes on guide plate 31, gives guide plate 31 a lateral thrust, makes guide plate 31 and third pivot 3 take place to rotate, and the suction structure in the standpipe 431 pumps the sewage in sewage chamber 421 to in the pipe chute 432, improves the velocity of flow of sewage in the pipe chute 432 for the discharge rate of sewage.

Specifically, the suction structure includes an impeller 32, the impeller 32 is coaxially fixed on the third rotating shaft 3, the impeller 32 is located in the vertical pipe 431, and the structure of the impeller 32 is similar to that of the exhaust fan impeller.

The third rotating shaft 3 rotates to drive the impeller 32 to rotate, the impeller 32 rotates to suck the sewage in the sewage chamber 421, the sewage is sucked into the vertical pipe 431 and then flows into the sewage main pipe 44 through the inclined pipe 432, and the discharge speed of the sewage is increased.

Specifically, a cleaning structure is arranged in the sewage chamber 421, and the cleaning structure can clean attachments on the filter screen plate 41 by using the rotation of the third rotating shaft 3.

The wave strikes on guide plate 31, drives third pivot 3 and rotates, and the clearance structure utilizes third pivot 3 to rotate the attachment of clearance on the filter screen board 41, avoids filter screen board 41's filtration pore to be blockked up by the attachment, makes the excrement in breeding the chamber 411 unable through filter screen board 41 whereabouts to the sewage chamber 421 in, leads to breeding the quality of water deterioration in the chamber 411, reduces and breeds output.

In particular, the cleaning structure comprises several turning bars 33.

A plurality of dwang 33 sets firmly on third pivot 3 along circumference, be equipped with brush 331 on the dwang 33, the upper end of brush 331 contacts with the downside that filters otter board 41.

The third rotating shaft 3 rotates to drive the rotating rod 33 to rotate, the hairbrush 331 on the rotating rod 33 continuously rotates to remove attachments on the filter screen plate 41, and the filter screen plate 41 is prevented from being blocked to influence the quality of the water body in the culture cavity 411.

Specifically, the upper end of the third rotating shaft 3 is rotatably disposed on the upper connecting rod 111, the lower end of the third rotating shaft 3 penetrates through the net cage 4, and the end portion of the third rotating shaft is rotatably disposed on the lower connecting rod 112.

The upper end of third pivot 3 rotates and sets up on last connecting rod 111, and the lower extreme rotates and sets up on lower connecting rod 112, has improved third pivot 3 pivoted stability, can also make box with a net 4 more firm.

In the description of this patent, it is to be understood that the terms "upper", "lower", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the patent and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered limiting of the patent.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The shell breeding equipment is characterized by comprising a first fixing column (1) and a second fixing column (11), wherein the first fixing column (1) and the second fixing column (11) are both vertically arranged;

the upper connecting rod (111) and the lower connecting rod (112) are horizontally and fixedly arranged at the tops of the first fixing column (1) and the second fixing column (11), the lower connecting rod (112) is horizontally and fixedly arranged on the first fixing column (1) and the second fixing column (11), and the lower connecting rod (112) is positioned under the upper connecting rod (111);

the conveying pipe (2) is horizontally and fixedly arranged on the lower connecting rod (112) through a supporting frame (24), a sealing plate (21) is arranged at one end of the conveying pipe (2), the other end of the conveying pipe is communicated with the outside, a second rotating shaft (22) is coaxially and rotatably arranged in the conveying pipe (2), and a spiral guide groove (221) is fixedly arranged on the second rotating shaft (22);

a plurality of box with a net (4), a plurality of box with a net (4) is all vertical to set firmly between first fixed column (1) and second fixed column (11), box with a net (4) is cylindricly, be equipped with the cavity in box with a net (4), box with a net (4) has: the filter net plates (41) are sequentially arranged in the net box (4) from top to bottom, and the cavity is divided into a plurality of culture cavities (2) by the filter net plates (41); the filter screen plate comprises a plurality of conical pipes (42), wherein the conical pipes (42) are fixedly arranged in a screen box (4), the conical pipes (42) correspond to a plurality of filter screen plates (41) one by one, the conical pipes (42) are positioned below the corresponding filter screen plates (41), and a sewage cavity (421) is formed between each conical pipe (42) and each filter screen plate (41); the sewage main pipe (44) is vertically arranged on the conveying pipe (2), the sewage main pipe (44) is communicated with the conveying pipe (2), and the sewage cavity (421) is communicated with the sewage main pipe (44) through a sewage branch pipe (43);

the driving mechanism is arranged on the first fixing column (1), and the driving mechanism can drive the second rotating shaft (22) to rotate by utilizing waves.

2. A shell farming apparatus according to claim 1, wherein the drive mechanism includes:

a connecting plate (132), wherein the connecting plate (132) is hinged on the left side surface of the first fixing column (1) through a first hinge shaft (135);

the buoy (13), the buoy (13) is fixedly connected with the connecting plate (132) through a connecting rod (131);

the first rotating shaft (142) is rotatably arranged on the front side surface of the first fixing column (1) through a shaft plate (141), the first rotating shaft (142) is parallel to the front side surface of the first fixing column (1), and a ratchet wheel (14) is fixedly arranged at the left end of the first rotating shaft (142);

a first pawl (133) and a second pawl (134), the first pawl (133) and the second pawl (134) are hinged on the connecting plate (132), the first pawl (133) is positioned above the second pawl (134), the end of the first pawl (133) is inserted into the teeth of the ratchet wheel (14), the end of the second pawl (134) is inserted into the teeth of the ratchet wheel (14), when the buoy (13) rotates upwards around the first hinge shaft (135), the first pawl (133) pushes the ratchet wheel (14) to rotate clockwise, the second pawl (134) rotates anticlockwise along the tooth edge of the ratchet wheel (14), when the buoy (13) rotates downwards around the first hinge shaft (135), the second pawl (134) pushes the ratchet wheel (14) to rotate clockwise, and the first pawl (133) rotates anticlockwise along the tooth edge of the ratchet wheel (14);

the transmission structure is arranged on the first rotating shaft (142), and the transmission structure can drive the second rotating shaft (22) to rotate.

3. The shell farming apparatus of claim 2, wherein the transmission structure comprises:

the first chain wheel (143), the said first chain wheel (143) is fixed to the right end of the first spindle (142);

the left end of the second rotating shaft (22) penetrates out of the sealing plate (21) and the end part of the second rotating shaft is fixedly connected with the second chain wheel (23), and the second chain wheel (23) is in transmission connection with the first chain wheel (143) through a chain (231).

4. The shell culturing apparatus according to claim 3, wherein the branched waste water pipe (43) comprises a vertical pipe (431) and an inclined pipe (432), the vertical pipe (431) is fixedly arranged at the lower end of the conical pipe (42), one end of the inclined pipe (432) is fixedly connected with the lower end of the vertical pipe (341), and the other end is connected with the main waste water pipe (44) in an inclined downward manner.

5. The shell aquaculture device according to claim 4, wherein a third rotating shaft (3) is coaxially and rotatably arranged in the net cage (4), the third rotating shaft (3), the filter screen plate (41) and the inclined tube (432) are rotatably arranged, the upper end of the third rotating shaft (3) penetrates through the top of the net cage (4), a guide plate (31) is fixedly arranged at the end of the third rotating shaft (3), the guide plate (31) and the third rotating shaft (3) are axially parallel, a suction structure is arranged in the vertical tube (431), and the suction structure can suck sewage in the sewage cavity (421) into the inclined tube (432) by utilizing the rotation of the third rotating shaft (3).

6. A shell farming plant according to claim 5, wherein the suction structure comprises an impeller (32), the impeller (32) being coaxially fixed to the third shaft (3), the impeller (32) being located in the standpipe (431).

7. A shell farming equipment according to claim 6, characterized in that a cleaning structure is arranged in the sewage chamber (421), and the cleaning structure can clean attachments on the filter screen plate (41) by using the rotation of the third rotating shaft (3).

8. The shell farming apparatus of claim 7, wherein the cleaning structure comprises:

a plurality of dwang (33), a plurality of dwang (33) sets firmly on third pivot (3) along circumference, be equipped with brush (331) on dwang (33), the upper end of brush (331) contacts with the downside that filters otter board (41).

9. The shell farming equipment of claim 8, wherein the upper end of the third rotating shaft (3) is rotatably arranged on the upper connecting rod (111), the lower end of the third rotating shaft (3) penetrates through the net cage (4) and the end is rotatably arranged on the lower connecting rod (112).