CN115443943B

CN115443943B - Unmanned ship for purifying water quality of aquaculture

Info

Publication number: CN115443943B
Application number: CN202211132832.XA
Authority: CN
Inventors: 王芳; 赵亮
Original assignee: Zhejiang University City College ZUCC
Current assignee: Zhejiang University City College ZUCC
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-06-16
Anticipated expiration: 2042-09-16
Also published as: CN115443943A

Abstract

The invention relates to an unmanned ship for purifying water quality in aquaculture, which comprises a ship body and a connecting frame, wherein the ship body adopts a double-ship body structure, two ship bodies which are arranged side by side are fixedly connected through the connecting frame, a water quality purifying component is arranged at a position right below the connecting frame, and a driving component is connected with the water quality purifying component; the water quality purifying part comprises an outer shell fixedly arranged at the bottoms of the two L-shaped fixing plates through bolts, the section of the outer wall of the bottom of the outer shell is a convex surface, and an installation cavity filled with quicklime is arranged in the outer shell. The beneficial effects of the invention are as follows: the uniformity of the slurry is judged through the mesh, the mounting cavity is opened after the blocky quicklime is dissolved to reach the size requirement, the outer shell oscillates up and down, the lime slurry stored in the secondary storage cavity is pressurized, no obvious granular lime is contained in the lime slurry, and the situation of fish feeding by mistake is avoided; the oscillating shell can also operate independently as a "wave making" device.

Description

Unmanned ship for purifying water quality of aquaculture

Technical Field

The invention belongs to the field of unmanned ship equipment, and particularly relates to an unmanned ship for purifying water quality in aquaculture.

Background

The unmanned ship is a full-automatic water surface robot which can navigate on the water surface according to preset tasks through remote control and sensing equipped with the unmanned ship, and the unmanned ship is various and mainly comprises an intelligent security unmanned ship on water, an intelligent lifesaving unmanned ship on water, a cluster marine survey unmanned ship, an ecological environment unmanned ship and the like.

The unmanned ship for the water ecological environment has the main functions of replacing people to finish various tasks such as water quality sampling, water quality monitoring, concealed pipe investigation, flow rate and flow measurement, water surface cleaning, water quality purification and the like, so that potential safety hazards of water operation of personnel are avoided to the greatest extent, the working efficiency is improved, and basic data, environment change and decision support are provided for the fields such as ecological environmental protection, hydrology and water conservancy, mapping measurement and the like.

The human uses the water area for cultivation, and carries out aquaculture by using the aquaculture technology and facilities according to different ecological habits of cultivation objects and different requirements on the environmental conditions of the water area; according to different water area properties, aquaculture industry is divided into mariculture industry and freshwater culture industry, and objects to be cultivated and planted comprise fishes, shrimps, crabs, shellfish, algae, gorgon euryale seed, lotus root and the like. The fish aquaculture has certain requirements on water quality in water areas, key indexes generally comprise temperature, transparency, pH value, dissolved oxygen, ammonium nitrogen, nitrate nitrogen, nitrite nitrogen, hydrogen sulfide, soluble phosphate concentration and the like, and the water quality purifying unmanned ship is equipment capable of changing the indexes by getting rid of manpower.

When the pH value of water quality is regulated by a traditional water quality purification unmanned ship, quicklime is put into a pond in a dry scattering mode, but the following problems exist in dry scattering: 1) It is difficult to achieve uniform administration of the whole pool; 2) In the process of converting the quicklime in the water into the slaked lime, a large amount of heat is absorbed by surrounding water bodies, so that the accumulation of the heat is difficult in a short time, and the chemical reaction is difficult to smoothly carry out; 3) Fish in the pond are easy to eat quicklime particles by mistake and kill; 4) The unmanned ship with the pH value adjustment function cannot change other indexes of water quality at the same time.

Therefore, the effect of scattering quicklime on the dry of the fish pond can not be fully exerted, and the water quality purifying effect is not obvious.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides an unmanned ship for purifying water quality of aquaculture.

This kind of aquaculture water purification unmanned ship includes: the water purifier comprises a ship body, a connecting frame, a water quality purifying component and a driving component;

the ship bodies are of double-ship structure, and are connected through a connecting frame; the inner side of the connecting frame is symmetrically provided with a limiting block, the limiting block is in sliding connection with an L-shaped fixing plate, the L-shaped fixing plate is connected with an outer shell of the water quality purifying component, a mounting cavity is arranged in the outer shell, and the mounting cavity is communicated with strip-shaped leakage holes on the front side and the rear side of the bottom of the outer shell and a feeding hole on the top of the outer shell; a charging block is arranged above the outer shell and is connected with the feeding hole through a charging hole;

the inner side of the connecting frame is symmetrically provided with a supporting frame which is connected with an oscillating shell through a reset spring and a bearing plate, and the oscillating shell is arranged right below the outer shell;

a positioning rod is arranged in the mounting cavity, two sides of the positioning rod are connected with the net pieces, the other ends of the net pieces on the two sides are connected with a plurality of connecting belts, the connecting belts are respectively wound on movable shafts on two sides of the inner wall of the mounting cavity, and the net pieces are positioned below the feeding holes;

the driving motor is arranged on the top panel of the connecting frame in the driving part, the output shaft of the driving motor is connected with the driving disc, the side wall of the driving disc is connected with the eccentric shaft, the eccentric shaft is sleeved with the crank, the bottom end of the crank is inserted with the positioning shaft, the two sides of the positioning shaft are provided with the positioning plates, and the positioning shaft is connected with the top of the outer shell through the C-shaped fixing frame.

As preferable: rectangular blocks are sleeved on the outer wall of the positioning rod and connected with the net sheet; sealing frames are symmetrically arranged on two sides of the inner wall of the mounting cavity, the sealing frames are rotationally connected with movable shafts, two ends of each movable shaft transversely penetrate through the surface of the outer shell, and torsion springs are arranged at the joints of the movable shafts and the outer shell; the sealing frame is also rotationally connected with a sealing shaft, the sealing shaft is positioned below the movable shaft, the sealing shaft is in surface contact with the movable shaft, the sealing shaft is provided with a communication notch, the outer wall of the movable shaft is provided with a plurality of winding grooves, the connecting belt is wound in the winding grooves, and the connecting belt is connected with one end of the net piece through a round rod.

As preferable: the bottom outer wall of the outer shell is a convex surface, the bottom shape of the oscillating shell is the same as that of the outer shell, the horizontal heights of the two ends of the oscillating shell are higher than those of the strip-shaped leak holes, a gap exists between the oscillating shell and the outer shell, and a secondary storage chamber is formed by the gap between the oscillating shell and the outer shell.

As preferable: the movable shaft penetrates out of the two end faces of the outer shell, the bottom of the fixed disc is provided with a horizontal arc plate in the extending direction, a blocking block is arranged right above the arc plate, one end of the blocking block is fixedly arranged on the side wall of the bearing plate, and the upper end face of the blocking block is an arc face.

As preferable: the net sheet is made of inelastic high temperature resistant material, and the aperture range of the net sheet is 0.5-3 cm.

As preferable: when the net sheet is not pressed, the connecting belt is wound in the winding groove, the direction of the communicating notch of the sealing shaft is vertical, and the torsion spring between the movable shaft and the outer shell is loosened; when the net sheet is pressed, the rectangular block moves downwards at the height of the positioning rod, the connecting belt pulls the movable shaft to rotate, the direction of the communicating notch of the sealing shaft is rotated to the horizontal direction, and the torsion spring between the movable shaft and the outer shell is pressed.

As preferable: the sealing shaft surface is covered with an anti-skidding sleeve except for the communicating notch, and the anti-skidding sleeve is made of high-temperature resistant materials.

As preferable: when the movable shaft rotates, the arc plate on the fixed disc rotates to the upper part of the blocking block, and the relative positions of the outer shell and the oscillating shell are fixed.

The beneficial effects of the invention are as follows:

1) According to the invention, the driving motor drives the outer shell to oscillate up and down, the crushing and the slurry melting of the blocky quicklime in the installation cavity are assisted, the uniformity of the slurry melting is judged through the net sheet, and the movable shaft and the sealing shaft which rotate along with the stress of the net sheet are matched, so that the installation cavity is opened after the blocky quicklime is dissolved until the size reaches the requirement, and the lime slurry flows into the secondary storage cavity along the strip-shaped leakage hole, so that no obvious granular lime exists in the lime slurry, and the situation of misfeeding of fish is avoided.

2) The lime slurry leaks to the secondary storage chamber along the strip-shaped leak hole, the driving part drives the outer shell to oscillate up and down, and the convex arc of the outer shell presses the lime slurry stored in the secondary storage chamber, so that a small number of granular lime in the lime slurry in the secondary storage chamber is crushed secondarily, and the granular lime is further prevented from being eaten by fish by mistake and the uniformity of the lime slurry is ensured.

3) The bottom shape of the oscillating shell is matched with the bottom shape of the outer shell, the volume of the formed secondary storage chamber is quantitative, the outer shell is driven by the driving motor to oscillate up and down, lime slurry in the pressure of the secondary storage chamber is extruded, the lime slurry is equally thrown into the pond from the two ends of the secondary storage chamber, the uniform addition of the lime slurry is realized, and the water quality purification effect is further improved.

4) The oscillating shell can also be independently operated as a wave-making device, and the circular arc plate and the blocking block enable the oscillating shell and the water quality purifying component to synchronously oscillate under the drive of the driving component in the process of dissolving quicklime, the oscillating shell vertically reciprocates to extrude the water surface of the pond, push water resonance wave-making is diffused to two sides, and the contact area of the water area of the pond and air is enhanced, so that the oxygen solubility of upper and lower water bodies in the pond is increased, and the water quality purification of the pond is doubly ensured.

Drawings

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

FIG. 2 is a front elevational view of the overall structure of the present invention;

FIG. 3 is a partial cross-sectional view of a water purification unit according to the present invention;

FIG. 4 is a side view of the overall structure of the present invention;

FIG. 5 is a cross-sectional view of the overall structure in the M-M direction of FIG. 3;

FIG. 6 is a partial cross-sectional view of the structure of the present invention;

FIG. 7 is a partially enlarged schematic illustration of region B of FIG. 6;

FIG. 8 is an enlarged partial schematic view of area A of FIG. 2;

fig. 9 is a cross-sectional view of the overall structure in the direction M-M of fig. 3 in a state where the mesh is pressed.

In the figure: the ship body 1, the connecting frame 2, the water quality purifying part 3, the driving part 4, the limiting block 21, the L-shaped fixing plate 22, the supporting frame 23, the supporting plate 24, the reset spring 25, the oscillating shell 26, the outer shell 31, the mounting chamber 32, the feeding hole 33, the charging block 34, the charging hole 35, the strip-shaped leak hole 36, the driving motor 41, the driving disc 42, the eccentric shaft 43, the crank 44, the positioning shaft 45, the positioning plate 46, the C-shaped fixing frame 47, the positioning rod 321, the rectangular block 322, the mesh 323, the sealing frame 324, the sealing shaft 325, the movable shaft 326, the winding groove 327, the connecting belt 328, the communication notch 320, the fixing disc 51, the circular arc plate 52, the blocking block 53 and the anti-skid sleeve 3251.

Detailed Description

The invention is further described below with reference to examples. The following examples are presented only to aid in the understanding of the invention. It should be noted that it will be apparent to those skilled in the art that modifications can be made to the present invention without departing from the principles of the invention, and such modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

As an embodiment, as shown in fig. 1 to 9, the unmanned ship for purifying water quality in aquaculture comprises a ship body 1 and a connecting frame 2, wherein the ship body 1 adopts a double-ship body structure, two ship bodies 1 which are arranged side by side are fixedly connected through the connecting frame 2, and a water quality purifying area is formed at the gap between the two ship bodies 1.

The application environment of the invention mainly aims at a static pond or a static culture lake for fish aquaculture, the static pond is taken as an example in the implementation, before working, an operator can detect the pH value of the pond through a Ph detector, when the pH value of the water quality of the pond is less than 6, the production of fish is not facilitated, and at the moment, quicklime can be put into the pond to regulate the acid-base property of the water quality of the pond so as to achieve the effect of purifying the water quality; the top of the connecting frame 2 is provided with a power supply module and a wireless transmitting module, the power supply module simultaneously supplies power for the driving part 4 and the propeller arranged on the ship body 1, the wireless transmitting module can control the power supply module to transmit signals to the terminal, and an operator can perform wireless operation through terminal equipment;

the water quality purifying component 3 is arranged at a position right below the connecting frame 2, the limiting blocks 21 are symmetrically and fixedly arranged at the inner wall of the connecting frame 2, the L-shaped fixing plates 22 are inserted into the middle positions of the side walls of each limiting block 21, the driving component 4 is arranged at the bottom positions of the two L-shaped fixing plates 22, the driving component 4 is connected with the water quality purifying component 3, and the limiting blocks 21 and the L-shaped fixing plates 22 are matched to limit the movement direction of the water quality purifying component 3, namely, the water quality purifying component 3 can only change in height in the vertical direction.

Referring to fig. 1 and 3, the water purifying component 3 includes an outer casing 31 fixedly installed at the bottoms of two L-shaped fixing plates 22 by bolts, the cross section of the outer wall of the bottom of the outer casing 31 is a convex surface, in this embodiment, an installation cavity 32 filled with quicklime is built in the outer casing 31, strip-shaped leakage holes 36 are symmetrically arranged at the bottom of the outer casing 31, a feeding hole 33 is symmetrically arranged at the top of the outer casing 31, the feeding hole 33 and the strip-shaped leakage holes 36 are both communicated with the installation cavity 32, a loading block 34 is fixedly installed at the central position of the outer wall of the top of the outer casing 31, and loading holes 35 are symmetrically arranged inside the loading block 34 and are used for sequentially throwing blocky quicklime and water.

Referring to fig. 2, 3 and 5, the driving part 4 comprises a driving motor 41 installed at the central position of the top of the connecting frame 2 through a motor fixing frame, a driving disc 42 is installed at the output shaft end of the driving motor 41, an eccentric shaft 43 is fixedly installed on the side wall of the driving disc 42, a crank 44 is sleeved on the outer wall of the eccentric shaft 43, a positioning shaft 45 is inserted at the other end of the crank 44, positioning plates 46 are fixedly installed on two side walls of the positioning shaft 45, a C-shaped fixing frame 47 is fixedly installed at the bottoms of the two positioning plates 46, the bottom of the C-shaped fixing frame 47 is fixedly installed at the top of the outer shell 31, the driving motor 41 works to drive the driving disc 42 to rotate, the rotating driving disc 42 drives the eccentric shaft 43 to do circular motion, so that the crank 44 is driven to do up-down reciprocating motion relative to the vertical direction through the crank 44, and then the C-shaped fixing frame 47 and the outer shell 31 are driven to do up-down reciprocating motion along the vertical direction through the crank 44, so that the mixture of the filled block quicklime and water in the mounting chamber 32 is mixed more uniformly under the effect of up-down tremble, the condition that the leaked lime slurry at the position of the strip-shaped leak hole 36 is higher in uniformity, the quicklime is effectively prevented from falling into a pond, the situation of the chemical fish is not completely obvious, and the situation of the bad effect of the pellet-like is avoided at the time.

Referring to fig. 2-9, a plurality of positioning rods 321 are longitudinally and equidistantly installed at the central position of the installation cavity 32, rectangular blocks 322 are sleeved at the outer wall of each positioning rod 321, meshes 323 are respectively embedded in two side walls of each rectangular block 322, sealing frames 324 are symmetrically installed inside the installation cavity 32, movable shafts 326 are rotatably connected to the central position of each sealing frame 324, two ends of each movable shaft 326 penetrate through the side walls of the outer shell 31, torsion springs are installed at the connection positions of the movable shafts 326 and the shell 31, sealing shafts 325 are rotatably installed at the lower positions of the sealing frames 324, the outer walls of the sealing shafts 325 are mutually contacted with the outer walls of the movable shafts 326, communication gaps 320 are formed in partial areas of the outer walls of the sealing shafts 325, winding grooves 327 are formed in the outer walls of the movable shafts 326 at equal intervals, connecting belts 328 are respectively wound on the inner walls of each winding groove 327, the connecting belts 328 are connected with one end of each mesh 323 through round rods, in an initial state, the communication gaps 320 face downwards, the installation cavity 32 is in a non-closed state, and when block-shaped quicklime is put into the installation cavity 32, the block-shaped quicklime falls into the surface of the mesh 323.

The anti-slip sleeve 3251 is embedded in the outer ring of the sealing shaft 325 and does not comprise the position area of the communication notch 320, so that the surface friction coefficient of the sealing shaft 325 is increased, the sliding of the movable shaft 326 can not occur in the process of driving the sealing shaft 325 to rotate, the anti-slip sleeve 3251 is a member made of high-temperature resistant materials, the service life of the anti-slip sleeve 3251 made of high-temperature resistant materials can be prolonged, and the high temperature generated during the reaction of the blocky quicklime and water can not damage the anti-slip sleeve 3251.

The mesh 323 is a member made of non-elastic high temperature resistant material, the mesh 323 is prevented from being damaged by high temperature generated when the block quicklime and water react, the aperture range of the mesh 323 is 0.5-3 cm, so that the mesh 323 is suitable for the use of the block quicklime with different sizes.

Because the diameter of the block quicklime is larger than the aperture of the mesh 323, the mesh 323 drives the rectangular block 322 to slide down along the positioning rod 321 under the action of gravity of a plurality of block quicklime, at this time, the position states of the rectangular block 322 and the mesh 323 are shown in fig. 9, when the mesh 323 moves to the above position, the other end of the mesh 323 generates traction force on the connecting belt 328, the traction force drives the movable shaft 326 to deflect, the movable shaft 326 rotates the torsion spring to be compressed and has resilience force, the rotating movable shaft 326 drives the sealing shaft 325 to deflect under the action of friction force, so that the communicating gap 320 of the sealing shaft 325 deflects from the initial position to the position area shown in fig. 9, at this time, the installation cavity 32 is changed into the closed state from the initial non-closed state, at this time, water is injected into the installation cavity 32 in the closed state through the charging hole 35, the water reacts with the block quicklime to form emulsion with the lime slurry, the diameter of the block quicklime in the state is reduced until the partial gravity action of the block quicklime in the state is smaller than the aperture of the mesh 323 after the aperture of the mesh 323, the block quicklime is lost, the block elasticity generated during the torsion spring drives the mesh 323 and the movable shaft 326 to reset under the action, the communication gap 320 is reset from the initial position, the initial position is changed into the position area shown in fig. 9, the initial position is changed into the closed state, the sealing cavity is driven into the state, and the sealing cavity 32 is again, and the sealing cavity is driven into the state, and the sealing cavity is in the state is in parallel with the state, and the sealing cavity is in the state of the sealing cavity is in the state.

The inner wall of the connecting frame 2 and the position right below the limiting block 21 are fixedly provided with a supporting frame 23, one side of the supporting frame 23 is movably inserted with a supporting plate 24, the joint of the limiting block 21 and the supporting plate 24 is provided with a return spring 25, the bottom of the supporting plate 24 is provided with an oscillating shell 26, the oscillating shell 26 is located right below the outer shell 31, two side walls of the oscillating shell 26 are not connected with two side walls of the outer shell 31 in a contact manner, the shape of the bottom of the oscillating shell 26 is the same as that of the bottom of the outer shell 31, a certain gap is formed between the bottom of the oscillating shell 26 and the bottom of the outer shell 31, a secondary storage cavity is formed by the gap, lime slurry leaking outwards along the strip-shaped leakage hole 36 flows into the secondary storage cavity, and the horizontal heights of the two ends of the oscillating shell 26 are higher than those of the strip-shaped leakage hole 36, so that the lime slurry can smoothly flow into the secondary storage cavity when leaking outwards along the strip-shaped leakage hole 36.

Meanwhile, the driving part 4 drives the outer shell 31 to move towards the bottom of the oscillating shell 26, the convex arc of the outer shell 31 presses lime slurry stored in the secondary storage cavity, so that a small number of granular lime in the lime slurry in the secondary storage cavity is crushed secondarily, uniformity of the lime slurry is further guaranteed, meanwhile, the bottom shape of the oscillating shell 26 is identical to that of the bottom of the outer shell 31, the oscillating shell 26 and the oscillating shell can be completely attached to each other, and therefore the lime slurry stored in the secondary storage cavity is uniformly sprayed into a pond along a sprinkling direction shown in fig. 9 under extrusion of the convex arc surface outside the outer shell 31 in the pressing process of the outer shell 31, an effect of uniform medication is achieved, the pH value of the whole water area of the pond can be rapidly adjusted, the Ca < 2+ > concentration in the pond water is increased, the pH value is improved, and the water quality purifying effect is remarkable. The pH value of the purified pool water meets the requirement of the pH value of the fish living water, and the pH value is generally 6-9;

the fixed disc 51 is fixedly arranged on two end surfaces of the movable shaft 326, the circular arc plate 52 is horizontally and fixedly arranged on the lower side of the side wall of the fixed disc 51, the blocking block 53 is arranged right above the circular arc plate 52, one end of the blocking block 53 is fixedly arranged on the side wall of the supporting plate 24, the upper end surface of the blocking block 53 is a circular arc surface, when the installation cavity 32 is in a non-closed state, the circular arc plate 52 is positioned right below the blocking block 53, the circular arc plate 52 can perform displacement in the vertical direction relative to the blocking block 53, in the process of changing the installation cavity 32 from the non-closed state to the closed state, namely, the movable shaft 326 rotates to drive the fixed disc 51 and the circular arc plate 52 to rotate together, the circular arc plate 52 rotates from the initial position to the right above the blocking block 53, at this moment, the blocking block 53 serves as a locking piece to limit the vertical downward direction of the circular arc plate 52, when the driving part 4 works to drive the outer shell 31 to move vertically downwards, the lower end surface of the oscillating shell 26 together vertically downwards, the lower end surface of the oscillating shell 26 is extruded to the pond, the outer side of the pond is pushed by the convex surface of the pond to the opposite to the blocking shell, the water surface of the pond is reset to the water surface of the oscillating shell 26, the water quality is reset to the vibrating shell is restored to the air, the water quality is restored to the upper surface of the vibrating shell, the water quality is restored to the vibrating shell is restored, and the water quality is restored to the upper effect in the process is increased, and the water quality is restored to the vibrating shell is the water in the process, and the water quality is in the process is restored.

Claims

1. An aquaculture water purification unmanned ship, comprising: a ship body (1), a connecting frame (2), a water quality purifying component (3) and a driving component (4);

the ship body (1) is of a double-ship structure, and the ship bodies (1) are connected through a connecting frame (2); the inner side of the connecting frame (2) is symmetrically provided with a limiting block (21), the limiting block (21) is in sliding connection with an L-shaped fixed plate (22), the L-shaped fixed plate (22) is connected with an outer shell (31) of the water quality purifying component (3), an installation cavity (32) is arranged in the outer shell (31), and the installation cavity (32) is communicated with strip-shaped leakage holes (36) on the front side and the rear side of the bottom of the outer shell (31) and a feeding hole (33) on the top of the outer shell (31); a charging block (34) is arranged above the outer shell (31), and the charging block (34) is connected with the feeding hole (33) through a charging hole (35);

the inner side of the connecting frame (2) is symmetrically provided with a supporting frame (23), the supporting frame (23) is connected with an oscillating shell (26) through a return spring (25) and a bearing plate (24), and the oscillating shell (26) is arranged under the outer shell (31);

a positioning rod (321) is arranged in the mounting cavity (32), two sides of the positioning rod (321) are connected with a net piece (323), the other ends of the net pieces (323) at two sides are connected with a plurality of connecting belts (328), the connecting belts (328) are respectively wound on movable shafts (326) at two sides of the inner wall of the mounting cavity (32), and the net piece (323) is positioned below the feeding hole (33); rectangular blocks (322) are sleeved on the outer wall of the positioning rod (321), and the rectangular blocks (322) are connected with the net piece (323); sealing frames (324) are symmetrically arranged on two sides of the inner wall of the mounting cavity (32), the sealing frames (324) are rotationally connected with movable shafts (326), two ends of each movable shaft (326) transversely penetrate through the surface of the outer shell (31), and torsion springs are arranged at the joints of the movable shafts (326) and the outer shell (31); the sealing frame (324) is also rotationally connected with a sealing shaft (325), the sealing shaft (325) is positioned below the movable shaft (326), the sealing shaft (325) is in surface contact with the movable shaft (326), the sealing shaft (325) is provided with a communication notch (320), the outer wall of the movable shaft (326) is provided with a plurality of winding grooves (327), a connecting belt (328) is wound in the winding grooves (327), and the connecting belt (328) is connected with one end of the net sheet (323) through a round rod; when the net sheet (323) is not pressed, the connecting belt (328) is wound in the winding groove (327), the communicating notch (320) of the sealing shaft (325) is vertical to the direction, and the torsion spring between the movable shaft (326) and the outer shell (31) is loosened; when the net piece (323) is pressed, the rectangular block (322) moves downwards at the height of the positioning rod (321), the connecting belt (328) pulls the movable shaft (326) to rotate, the direction of the communicating notch (320) of the sealing shaft (325) rotates to the horizontal direction, and the torsion spring between the movable shaft (326) and the outer shell (31) is pressed;

the driving motor (41) is arranged on the top panel of the connecting frame (2) in the driving component (4), an output shaft of the driving motor (41) is connected with the driving disc (42), the side wall of the driving disc (42) is connected with the eccentric shaft (43), the eccentric shaft (43) is sleeved with the crank (44), the bottom end of the crank (44) is inserted with the positioning shaft (45), positioning plates (46) are arranged on two sides of the positioning shaft (45), and the positioning shaft (45) is connected with the top of the outer shell (31) through the C-shaped fixing frame (47).

2. An aquaculture water purification unmanned ship according to claim 1 wherein: the bottom outer wall of shell body (31) is the convex surface, and oscillating shell (26) bottom shape is the same with shell body (31) bottom shape, and the level at oscillating shell (26) both ends is higher than the level of strip leak (36), has the space between oscillating shell (26) and shell body (31), and the space between oscillating shell (26) and shell body (31) forms secondary storage cavity.

3. An aquaculture water purification unmanned ship according to claim 1 wherein: the movable shaft (326) penetrates through two end faces of the outer shell body (31) to be provided with fixed discs (51), the bottoms of the fixed discs (51) are provided with arc plates (52) which are horizontal in expanding direction, blocking blocks (53) are arranged right above the arc plates (52), one ends of the blocking blocks (53) are fixedly arranged on the side walls of the supporting plates (24), and the upper end faces of the blocking blocks (53) are arc surfaces.

4. An aquaculture water purification unmanned ship according to claim 1 wherein: the net piece (323) is made of inelastic high temperature resistant material, and the aperture range of the net piece (323) is 0.5-3 cm.

5. An aquaculture water purification unmanned ship according to claim 1 wherein: the surface of the sealing shaft (325) is covered with an anti-slip sleeve (3251) except for the communication notch (320), and the anti-slip sleeve (3251) is made of high-temperature resistant materials.

6. An aquaculture water purification unmanned ship according to claim 1 wherein: when the movable shaft (326) rotates, the arc plate (52) on the fixed disc (51) rotates to the position above the blocking block (53), and the relative positions of the outer shell (31) and the oscillating shell (26) are fixed.