CN102640715A - Lifting net box with inner liner and lifting support system of lifting net box - Google Patents

Abstract

A lifting net cage with liner and its lifting support system is composed of two parts: a net cage with a retractable liner and a lifting function and a lifting support system, wherein: the net cage mainly includes a floating tube, an inner tank, a partition Board, ventilation main pipe, ventilation hose, gas distribution pipe, water pipe, safety cover, etc.; the lifting support system mainly includes air pump, communication pipe, exhaust pipe, valve, flow distributor, gas distribution joint and barometer. The lifting support system on the sea surface is connected to the ventilation main pipe through the ventilation hose, and then connected to the liner installed in the floating pipe of the net cage through the air distribution pipe. The liner can expand and contract under the action of the air pump, and discharge the water in the floating pipe The water body realizes the floating of the net cage. When the inner tank shrinks, the water outside the net cage enters the floating pipe from the water pipe through the siphon to realize the sinking of the net cage. When the sinker suspended at the bottom of the fishing net touches the seabed, the sinking stops automatically.

Description

Lifting cage with liner and lifting support system thereof

technical field

The invention relates to a deep-water net cage lifting control technology in the field of marine aquaculture, in particular to a new type of deep-water net cage with a lifting function and a lifting support system.

Background technique

Cage aquaculture is a high-tech aquaculture industry developed in recent years. It uses mesh to assemble a certain shape of the box, set it in a larger water body, and exchange the water inside and outside the cage through the mesh to make the inside of the cage. Form a living water environment suitable for fish life, with the characteristics of high yield, high benefit and high investment. At present, marine aquaculture cages tend to be large-scale, and the aquaculture sea area is developing from shallow waters in inner bays to deep waters above 20m. However, in the deep sea area, the sea surface is strong and the sea current is strong, which seriously threatens the production safety of the cage culture industry. How to improve the wind and wave resistance of cages is an important issue faced by the field of deep-water cage culture. According to the wave theory that the wave intensity decays exponentially with the increase of the depth from the water surface, sinking the cages to a certain depth underwater can not only effectively avoid typhoons, strong waves damage to the cages and fish escape from nets breaking The resulting economic losses can also reduce the harm to fish health caused by red tides in the ocean surface layer and water environment pollution. Therefore, researching and improving the lifting control technology of deep-water cages is the key to promoting the rapid development of deep-water cage aquaculture industry.

After searching the existing technical documents, it is found that the Chinese patent publication number: CN 1582646A, the patent name is: remote control system and control method for lifting cages, and the patent includes: floating cages, cages on the main floating pipe Water valve and ventilation valve, air pump, net cage lifting control device, its characteristics are: the net cage lifting control device is connected with the net cage by a shell, and the shell is equipped with a solar panel, a storage battery, a motor, an air pump, an electric valve, a program The control box and the air pump are connected to the ventilation valve on the main floating pipe through the gas pipeline, and the electric valve is connected to the gas pipeline. The mobile communication module in the control system sends a text message to execute the dive or ascend through the user's mobile phone, and the control system controls the circuit and the motor, air pump, and electric valve connected to it to exhaust, fill or inflate the main floating pipe, and drain it. Realize the diving or floating of net cage. Its main disadvantages are: there are serious flaws in the design, its control system and the lifting system of the cage must also work all the time when it is not going up and down, and the control system is therefore floating in the strong wind and waves during the typhoon, and the electronic equipment is in the water. It is easy to be damaged, and the reliability of the control system is poor, so the whole system becomes very fragile; the design of the remote control system is complicated; all the electric valves set on the floating pipe will be easily damaged due to sinking into seawater, and the water level limit valve. Corroded and unable to work; solar panels cannot work during typhoons; the water body in the floating tube cannot be completely discharged when the net cage rises; the manufacturing cost is high, and it is inconvenient to promote on a large scale.

Chinese patent application number: 200910223320.9, the patent name is: A HDPE self-tensioning flat-bottomed lifting current-resistant cage system and control method, the patent includes: the main frame of the spherical cage constructed of HDPE pipes, and high-strength fishing ropes , central gravity pendent self-balancing device, net clothes, HDPE pipe exhaust inflation port, high-strength exhaust inflation hose, HDPE inlet and outlet pipes, which is characterized by using the buoyancy provided by the closed HDPE floating tube cabin in seawater to make the net If the cage normally floats on the sea surface, open the valve of the exhaust pipe to release air, and adjust the relationship between the buoyancy and gravity of the cage in turn. When the buoyancy is less than the gravity of the cage, the cage will sink; The buoyancy of the tube cabin increases, and the net cage floats up and even partially emerges from the water surface, and part of the net cage body can float above the water surface according to needs. Its main disadvantages are: in the marine environment, during the sinking process of the net cage, the requirements for the balance of deflation and water intake of the buoy are very high. When the wind is at level 5, the ocean waves are relatively large, and the net cage cannot float normally on the sea surface. Instead, they float up and down, left and right, and the net cages cannot be kept on a horizontal plane. When the net cages need to sink, it is often before a typhoon comes, and the unbalanced floating of the net cages caused by wind and waves is even more severe. Due to the influence of strong winds, waves, torrents and other factors, the patented technology adopts natural deflation, and the water inlet speed of the floating tube is very different. The cage on the side facing the waves is lower, and the water inlet speed is much higher than On the other side, the inclination angle of the frame becomes larger and larger during the sinking process of the net cage, and this inclination further aggravates the difference in the water inflow velocity on both sides, and the net cage itself has no ability to adjust the tilt balance, and eventually even makes the net The whole box overturns, causing losses; when the net box rises, the water body in the floating pipe cannot be completely discharged.

In addition, the Chinese patent announcement number: CN 200950775Y, the patent name is: deep water liftable upright net cage, the patent includes: including buoyancy platform, feeding pipe, net cage and inflatable automatic lifting device, its characteristic is: There are several connecting hooks, the connecting hooks are connected with an adjustable positioning rope, and the other end of the rope is connected with the buoyancy platform; the lower end of the cage is connected with an inflatable automatic lifting device, and an L-shaped inflatable tube is arranged on the inflatable box, and the other end of the inflatable tube extends The water outlet surface is connected with an air pump or an inflatable device, and the feeding pipe is a vertical type, one end is connected with the buoyancy platform, and the other end is connected with the corresponding opening on the net cage. This patent extracts the net cage by an inflatable automatic lifting device, and adjusts the depth of the net cage in the water. Its main disadvantages are: the gas distribution in the inflatable box is not uniform during the inflation and pumping operations, which makes the overall force of the cage unbalanced, which may cause the cage to tilt and deflect at a large angle or even roll over; when the cage rises, it cannot Completely discharge the water in the floating tube; it cannot be used for cages of different weights; in addition, the inflatable automatic lifting device connected to the lower end of the cage not only reduces the buoyancy of the floating tube, but is easily damaged by seawater corrosion and aquatic organisms, and significantly increases the anchorage. The anchoring force required for the anchorage system. In actual production, the main reason for the annual loss of marine cage culture is insufficient anchor force during typhoons, which causes the entire cage to be blown away by typhoon waves. Therefore, need to develop safer and more practical novel cage lifting system.

Contents of the invention

Aiming at the deficiencies of the existing net cage lifting technology, the present invention proposes a lifting net cage with a liner and its lifting support system that can solve the above technical problems. By setting a retractable inner liner, the water intake is realized by using the principle of siphon The lifting of the net cage; the gas distribution is uniform by setting the flow distributor, and there is no seawater corrosion and other problems.

The present invention is achieved through the following technical solutions:

The lifting cage with liner of the present invention comprises:

At least two float tubes to provide buoyancy to the cage;

An inner bladder located within the float tube that expands and contracts through gas control;

A partition part located in the floating pipe to evenly divide the floating pipe into several sections;

It is arranged in the middle of the two floating pipes as the ventilation main pipe of the air movement channel;

Connect the flow distributor of the cage lifting support system and the ventilation hose of the ventilation main pipe;

connecting the liner in the float section to the air distribution tube of the vent main; and

One end is arranged at the bottom of the floating pipe, and the other end goes around the top of the floating pipe and then extends to the water pipe at the lower part of the floating pipe.

The net cage can further be provided with a net, and the upper edge of the net is tightly suspended on the floating pipe to provide a living space for fish farming.

The cage is further provided with a cable, and the cable hangs the sinker to the bottom of the net.

The net cage can be further provided with a floating body, which is used to provide buoyancy, better support the whole ventilation hose, and prevent it from sinking into the bottom of the water.

The net cage can also be further provided with sinkers, which make the net clothing case sink and open better.

Described cage can also be further provided with safety cover, and described safety cover needs to apply axial pressure when tightening and unscrewing, and is arranged on the lower edge of water pipe, and its function is to prevent surge from entering the floating pipe.

The net cage can further be provided with a connecting block connecting the inner and outer floating pipes.

The net cage can be further provided with a connection block, a standpipe and a rail-supporting pipe connecting the inner and outer floating pipes, and the vertical pipe is connected with the connection block and the rail-supporting pipe.

The floating pipe is a circular or oval hollow, airtight annular pipe, and its function is to provide buoyancy for the net cage.

The shape of the inner tank is a cylinder, which can expand and contract radially, and its function is to gradually expand when inflated, and to displace water from the floating tube.

The partition board evenly divides the floating pipe into several equal parts to form several pipe sections with the same volume.

The ventilation hose is a pressure pipe, one end of which is arranged on the ventilation main pipe and bound to the standpipe, and its function is to connect the lifting support system and the ventilation main pipe.

The ventilation main pipe is a circular or elliptical hollow and airtight annular pipe, which is arranged in the middle of the two floating pipes and passes through the connecting block, and its function is to pass through the airflow movement channel.

The air distribution pipe is a kind of pressure pipe, which connects the inner tank in each section of the floating pipe section to the flexible small pipe of the ventilation main pipe from the upper part of the floating pipe, and its function is to provide a channel for the airflow movement, and through the air distribution pipe to each inner tank. The bladder is evenly inflated.

The water pipe is a hollow pipe, one end of which is arranged at the bottom of the outer wall of the floating pipe, bypasses the top along the outside of the floating pipe and then extends to a certain height from the bottom, and its function is to provide passages for water bodies to enter and exit the floating pipe.

The standpipe and the rail support pipe are hollow pipes, and their function is to connect the connection block and the rail support pipe to provide support for the staff when working, so as to ensure the safety of the staff.

When the above-mentioned net cages are in use, the net cage lifting support system on the sea surface is connected to the ventilation main pipe through the ventilation hose, and then connected to the inner tank installed in the floating pipe of the net cage, and the inner tank is controlled by the air pump in the net cage lifting support system. Expansion and contraction, when the liner expands, the water body in the floating pipe is discharged to realize the floating of the net cage. When the liner shrinks, the water body outside the net cage enters the floating pipe from the water pipe through the siphon effect to realize the sinking of the net cage. When sinking to the net cage (hanging on the When the sinker at the bottom of the fishing net touches the seabed, the sinking stops automatically.

The lifting and supporting system of the lifting net cage with liner according to the present invention is located on the sea surface, connected to the ventilation main pipe of the net cage through the ventilation hose, and then connected to the internal cage installed in the floating pipe of the net cage through the net cage air distribution pipe. Gallbladder, including:

Air pump to provide air flow;

Connect the flow distributor of the air pump;

The connecting pipe connecting the flow distributor and the air inlet of the air pump;

The gas distribution joint connecting the flow distributor and the ventilation hose of the cage;

The gas distribution valve arranged on the gas distribution joint;

the exhaust valve provided on the connecting pipe; and

Air pressure gauge located on the flow distributor.

The wall of the flow distributor is provided with a number of gas distribution joint containers, its function is to buffer the air shock between the air pump and the gas distribution pipe, so that the air flow is uniform and stable, and can provide air flow for multiple net cages at the same time, realizing multiple net cages. The boxes are raised and lowered at the same time.

The communication pipe is a hollow pressure pipe, and its function is to connect the flow distributor and the air inlet of the air pump.

The exhaust valve is arranged on the communication pipe of the flow distributor, and its function is to open and close the ventilation pipe, adjust the flow and pressure, and change the direction of the airflow.

The above-mentioned net cage of the present invention is used in conjunction with the lifting support system. When the net cage needs to sink, unscrew all the safety covers on the floating pipe, and connect the ventilation hose to the gas distribution joint of the flow distributor of the lifting support system on the sea surface , open all the valves of the flow distributor, connect the connecting pipe installed on the flow distributor to the air inlet of the air pump, start the air pump, the air flow will flow from the inner tank through the ventilation hose to the flow distributor, and enter through the connecting pipe In the air pump, it is discharged through the exhaust port of the air pump. At this time, a low pressure is formed in the inner tank, and the inner tank shrinks. The water outside the net cage enters the floating pipe from the water pipe through the siphon effect, and the overall weight of the net cage increases, and the net cage begins to sink. . The air pump works continuously until the negative pressure reading of the barometer increases sharply suddenly, then the air pump is turned off, and the net cage is filled with water. The net cage still continues to sink, and when part of the sinker touches the seabed, the net cage sinks and stops automatically and is suspended in the water body. Pull out the breather hose and set it on a buoy floating on the sea. Cage sinking operation is completed. When the sinking net cage needs to float up, connect the ventilation hose to the air distribution joint of the lifting support system on the sea surface, connect the communication pipe installed on the flow distributor to the exhaust port of the air pump, open the air distribution valve, Start the air pump and slowly close the exhaust valve. The airflow discharged from the air pump enters the flow distributor through the communication pipe, and then enters the inner tank through the gas distribution joint, gas distribution valve, and ventilation hose. The inner tank expands and squeezes the water in the floating tube, forcing The water body is discharged from the floating pipe through the water pipe, the overall weight of the net cage is reduced, and the net cage begins to float. The air pump continues to work until the float pipe emerges from the water. When the reading of the barometer basically no longer decreases, the water in the float pipe is removed. Open the exhaust valve, turn off the air pump, separate the vent hose and the gas distribution joint, and tighten all the safety valves on the float pipe. Cover, net cage floating operation is completed.

Compared with the prior art, the present invention has the advantages of: no valves and water pumps are installed on the lifting net cage, which avoids the problem of corrosion; water is fed by siphon, and seawater is automatically blocked from entering the floating pipe after draining; the pipe network is filled with water and air The system is simple; avoiding the residual problem of the water body in the floating pipe after the cage is raised; at the same time, the multi-port cage lifting operation is realized; the sinking of the cage automatically stops, and there is no need for floating objects to support the sinking cage; the lifting operation of the cage is only done by an air pump Completed; the overall force of the net cage is balanced during the lifting, which improves the stability and safety of the net cage lifting; the overall technology is simple to implement, high in efficiency and low in cost.

Description of drawings

Fig. 1 is lifting cage plan view;

Fig. 2 is the vertical view of lifting cage;

Fig. 3 is the structural diagram of the floating tube with the liner;

Fig. 4 is a cross-sectional view of the water inlet pipe;

Figure 5 is a structural diagram of the lifting support system.

In the figure: safety cover 1, floating pipe 2, liner 3, clapboard 4, air distribution pipe 5, ventilation main pipe 6, water pipe 7, connection block 8, rail support pipe 9, ventilation hose 10, floating body 11, standpipe 12, net clothing 13, sinker 14, cable 15, air pump 16, flow distributor 17, air pressure gauge 18, exhaust valve 19, Unicom pipe 20, gas distribution valve 21, gas distribution joint 22.

Detailed ways

The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and the implementation and operation process are provided, but the protection scope of the present invention is not limited to the following embodiments.

As shown in Fig. 1-4, the present invention provides a kind of lifting cage with liner as described:

at least two buoyancy tubes 2 to provide buoyancy to the cage;

An inner tank 3 located in the floating tube that expands and contracts through gas control;

A partition 4 that is located in the floating tube and evenly divides the floating tube into several sections;

Arranged in the middle of the two floating pipes, as the ventilation main pipe 6 of the air flow channel;

Connect the air hose 10 of the flow distributor of the net cage lifting support system and the air main pipe;

The liner in the floating pipe section is connected to the distribution pipe 5 of the ventilation main pipe;

One end is arranged at the bottom of the floating tube, the other end goes around the top of the floating tube and then extends to the water pipe 7 at the lower part of the floating tube;

Described net cage can also be further provided with safety cover 1, and described safety cover is to adopt the pressure-screw type airtight cover that adopts the same material as floating tube to make, promptly needs to apply axial pressure when tightening and unscrewing, is arranged on the passageway. The lower edge of the water pipe is used to prevent surges from entering the floating pipe.

Described net cage can also be provided with net clothing 13 further, and described net clothing is the fishing net of making with black nylon or polyethylene material, and its upper edge is hung on the floating pipe closely, provides living space for fish farming.

Described net cage is further provided with cable 15, and described cable adopts anti-ultraviolet, corrosion-resistant, high-strength material to make rope, and its effect is to hang sinker to the bottom of net clothing.

Described net cage can also be provided with floating body 11 further, and described floating body is made of high-strength, anti-ultraviolet, corrosion-resistant material such as HDPE, is used for providing buoyancy, better supports the whole ventilation hose, prevents it from sinking to the bottom .

Described net cage can also be further provided with sinker 14, and described sinker is the cylindrical or streamlined object that is made of materials such as concrete, and its effect is to make net clothes case sink better, open.

The net cage can further be provided with a connection block 8 connecting the inner and outer floating pipes, and the connection block is made of materials with anti-ultraviolet, anti-corrosion and high tear strength.

Described net cage can also be further provided with the connection block 8 that links internal and external floating pipe, standpipe 12 and support rail pipe 9, and described standpipe links connection block and support rail pipe.

Described floating pipe 2 is the circular or elliptical hollow, airtight annular pipeline that anti-ultraviolet such as HDPE, anti-corrosion, the high material of tearing strength are made, and its effect is to provide buoyancy for net cage.

The liner 3 is made of high-strength, flexible, UV-resistant, anti-corrosion, high-tearing-strength, water-impermeable materials. It is in the shape of a cylinder and can expand and contract radially. Tube.

The partition 4 is made of the same material as the floating tube, and its function is to evenly divide the floating tube into several equal parts to form several pipe sections with the same volume.

The vent hose 10 is a pressure pipe made of high-strength, flexible, anti-ultraviolet, anti-corrosion, high tear strength, and water-impermeable materials. One end is arranged on the vent main pipe and bound on the standpipe. Lifting support system and ventilation manifold.

The air distribution pipe 5 is a pressure pipe made of a flexible material with anti-ultraviolet radiation, corrosion resistance and high tear strength, and the inner tank in each section of the floating pipe section is connected to the flexible small pipe of the ventilation main pipe from the top of the floating pipe. The role is to provide a channel for air movement, and to inflate each liner evenly through the trachea.

The water pipe 7 is a hollow pipe made of the same material as the floating pipe, one end of which is arranged at the bottom of the floating pipe, bypasses the top of the floating pipe and then extends to a certain height from the bottom. aisle.

The standpipe 12 is a hollow tube made of anti-ultraviolet, anti-corrosion, and high tear strength materials, and its function is to connect the connecting block and the rail pipe to ensure the safety of the staff.

The rail support pipe 9 is a hollow tube made of anti-ultraviolet, corrosion-resistant, and high-tearing-strength materials.

The ventilation main pipe 6 adopts a circular or elliptical hollow and airtight annular pipe made of the same material as the floating pipe, which is arranged in the middle of the two floating pipes and passes through the connecting block 8, and its function is to pass through the air flow passage.

As shown in Figures 1-5, the present invention provides a lifting support system for lifting net cages with liners. 5 is connected to the liner 3 installed in the floating pipe 2 of the net cage, including:

Air pump 16 to provide air flow;

Connect the flow distributor 17 of the air pump;

The connecting pipe 20 connecting the flow distributor and the air pump inlet;

Connect the gas distribution joint 22 of the flow distributor and the net cage ventilation hose;

The gas distribution valve 21 arranged on the gas distribution joint;

The exhaust valve 19 arranged on the communication pipe; and

Air pressure gauge 18 located on the flow distributor.

Described air pump 16 is a kind of motor-driven device that removes air or adds air, can be air pump, suction type air pump etc., and its function is to provide air flow.

The flow distributor 17 is made of anti-ultraviolet, anti-corrosion, high-strength material, and a container with several gas distribution joints arranged on the wall, its function is to buffer the air shock between the air pump and the gas distribution pipe, so that the air flow is uniform and stable, and It can provide airflow for multiple net cages at the same time, and realize simultaneous lifting of multiple net cages.

The connecting pipe 20 is a hollow pressure pipe made of anti-ultraviolet, anti-corrosion and high-strength materials, and its function is to connect the flow distributor and the air pump inlet.

The gas distribution joint 22 is made of anti-ultraviolet, corrosion-resistant and high-strength materials, and its function is to connect the flow distributor and the ventilation hose.

The air pressure gauge 18 is an air pressure measuring device arranged on the flow distributor, and its function is to display the instantaneous pressure in the flow distributor.

The gas distribution valve 21 is made of anti-ultraviolet, corrosion-resistant and high-strength materials, and is arranged on the gas distribution head of the flow distributor.

The exhaust valve 19 is made of anti-ultraviolet, anti-corrosion, high-strength materials, and is arranged on the communication pipe of the flow distributor.

The following describes the embodiments of the present invention in detail in conjunction with specific applications and operations:

Embodiment 1: A lifting net cage and a lifting support system.

The net cage lifting system consists of two parts: a net cage with a retractable liner and a lifting function and a lifting support system. As shown in Figure 1 to Figure 5, wherein: the net cage mainly includes a safety cover 1, a floating pipe 2, an inner tank 3, a partition 4, a main ventilation pipe 6, a ventilation hose 10, a gas distribution pipe 5, a water pipe 7, and a connecting block 8. Standpipe 12, rail support pipe 9, netting 13, cable 15, sinker 14 and floating body 11; lifting support system mainly includes air pump 16, flow distributor 17, exhaust valve 19, communication pipe 20, air distribution valve 21, gas distribution joint 22 and air pressure gauge 18.

The lifting support system positioned on the sea surface is connected to the ventilation main pipe 6 through the ventilation hose 10, and then connected to the liner 3 installed in the floating pipe 2 of the net cage through the air distribution pipe 5, and the upper edge of the net clothing 13 is suspended on the floating pipe 3. The sinker 14 is suspended to the bottom of the netting 13, the floating body 11 is connected and supports the whole ventilation hose 10, and the partition 4 is arranged in the floating pipe 2; the communication pipe 20 is connected to the flow distributor 17 and the air pump 16 inlet, and the flow distributor The gas distribution joint 22 of 17 is provided with a gas distribution valve 21, and the connecting pipe 20 is provided with an exhaust valve 19. The gas distribution joint 22 is connected to the flow distributor 17 and the ventilation hose 10, and the air pressure gauge 18 is arranged on the flow distributor 17. Under the action of air pump 16, inner bag 3 can expand and contract, and when inner bag 3 expands, discharge the water body in the floating pipe 2 to realize the floating of the net cage; Realize net cage sinking in the pipe 2, when sinking to the sinker 14 that is suspended in the bottom of the net clothing 13 contacts the seabed, the sinking stops automatically.

The working water depth of the present embodiment is 20m, and four lifting net cages are used. The floating tube 2 is made of HDPE material, and is divided into two inner and outer tubes, each divided into 12 sections, with a diameter of 310mm and a wall thickness of 20mm. A closed membrane structure made of high-quality, high-strength rubber material; the material of the partition 4 is the same as that of the floating pipe, and the thickness of the plate is 10mm, and the inner and outer floating pipes 2 are evenly divided into 12 sealed pipe sections; the main ventilation pipe 6 and the water pipe 7 They are all made of the same material as the floating pipe 2, and the air distribution pipe 5 is made of PTU; each pipe section is equipped with one air distribution pipe, and there are 24 air distribution pipes 5 in total, with a pipe diameter of 8 mm, which enter from the middle and upper parts of each pipe section. The interior of the floating pipe 2 is connected with the inner tank 3; the ventilation main pipe 6 is 62.5m long, and is a closed pipe connected end to end, with a pipe diameter of 100mm, and the air distribution pipe 5 is evenly connected to the main ventilation pipe 6; The pipe diameter is 40mm, which is set in the middle of each pipe section; the rail pipe 9 has a diameter of 110mm and a height of 80cm; the air pump 16 adopts a voltage 380V AC power supply type air pump, the pressure is 0.8MPa, and the air volume is 1000L/min; the netting is made of polyethylene material made of high-strength polyethylene material with a depth of 8m; the cable 15 is made of high-strength polyethylene material, and the maximum tensile force that can withstand is 200 kilograms. Made as a streamlined sealing body with a maximum buoyancy of 200N; the sinker 14 is a streamlined block made of concrete, a total of 61, each weighing 40kg, and suspended by cables 15 of different lengths.

The cage lowering operation steps are as follows:

(1) When the net cage needs to sink, unscrew each safety cover 1 on all floating pipes 2 of the four-port lifting net cage, and connect the ventilation hose 10 of each net cage to the lifting support system on the sea surface respectively On the air distribution joint 22 of the flow distributor 17, connect the communication pipe 20 installed on the flow distributor 17 to the air inlet of the air pump 16, open each air distribution valve 21, start the air pump 16, and slowly close the exhaust valve 19 , the air flow from the gas in the inner tank 3 passes through the ventilation hose 10 and the gas distribution valve 21, flows into the flow distributor 17 and the communication pipe 20, enters the air pump 16, and then is discharged through the exhaust port of the air pump 16. Low pressure is formed in the gallbladder 3, and the inner gallbladder 3 shrinks, and the water body outside the floating pipe net cage enters in the floating pipe 2 from the water pipe 7 by siphon action, and the overall weight of the net cage increases, and the net cage begins to sink. Air pump 16 works constantly, and when the negative pressure reading of air gauge 18 increases sharply suddenly, closes air pump 16, opens exhaust valve 19, and net cage is filled with water. Net cage still continues to sink, and after part sinker 14 touches seabed, net cage sinks and stops automatically, and this moment, fishing net is suspended in the water body of 1m high from seabed, and whole net cage sinks 21m. Pull out the ventilation hose 10 and set it on a buoy 11 floating on the sea surface. Cage sinking operation is completed.

(2) When the sinking net cage needs to float up, connect each ventilation hose 10 to the gas distribution joint 22 of the lifting support system on the sea surface, open the gas distribution valve 21, and connect the gas distribution valve 21 installed on the flow distributor 17. The pipe 20 is connected to the exhaust port of the air pump 16, the exhaust valve 19 is opened, the air pump 16 is started, and the exhaust valve 19 is slowly closed, the air flow enters the communication pipe 20 from the air pump 16, enters the flow distributor 17, and then passes through the gas distribution joint 22, Distributing valve 21 and ventilation hose 10 enter inner bag 3, and inner bag 3 expands and squeezes the water body in floating pipe 2, forces water body to discharge floating pipe 2 by water pipe 7, net cage overall weight reduces, and net cage begins to float. The air pump 16 works continuously until the floating tube 2 emerges from the water surface. When the reading of the barometer 18 basically no longer decreases, the water body in the floating tube 2 is removed, the exhaust valve 19 is opened, the air pump 16 is closed, and the ventilation hose 10 and the gas distribution tube are separated. Connector 22 is screwed on every safety cover 1 on the floating pipe, and the floating operation of the net cage is completed.

Implementation effect: The four-mouth lifting net cage sinks about 10m from the sea surface smoothly, steadily and safely, hangs in the water body of 20m, and can float to the water surface. There are no valves and pumps on the net cage, which avoids the problem of corrosion; the siphon is used to enter the water, and the seawater is automatically blocked from entering the floating pipe after drainage; the pipe network system is simple; the problem of residual water in the floating pipe after the cage is raised is avoided; at the same time, multiple Net cage lifting operation; the sinking of the net cage stops automatically, no floating body is needed to support the sinking net cage; the lifting operation of the net cage is only completed by an air pump; the overall technology is simple to implement, high in efficiency and low in cost.

Embodiment 2: A lifting net cage and a lifting support system.

The net cage lifting system consists of two parts: a net cage with a retractable liner and a lifting function and a lifting support system. As shown in Fig. 1 to Fig. 5, wherein: net cage mainly comprises safety cover 1, float pipe 2, liner 3, dividing plate 4, ventilation main pipe 6, ventilation hose 10, air distribution pipe 5, water pipe 7, further Including connection block 8, standpipe 1, rail support pipe 9, netting 13, cable 15, sinker 14 and floating body 11; the lifting support system mainly includes air pump 16, Unicom pipe 20, exhaust valve 19, air distribution valve 21, Flow distributor 17, gas distribution joint 22 and air pressure gauge 18.

The working water depth of the present embodiment is 40m, eight lifting net cages. The floating tube 2 is made of HDPE material, and is divided into two inner and outer tubes, each divided into 16 sections, with a diameter of 340mm and a wall thickness of 20mm. The closed membrane structure is made of good and high-strength PTU material; the material of the partition 4 is the same as that of the floating pipe, and the thickness of the plate is 10mm, and the inner and outer floating pipes 2 are evenly divided into 16 sealed pipe sections; the ventilation main pipe 6 and the water pipe 7 They are all made of the same material as the floating pipe 2, and the air distribution pipe 5 is made of PTU; there are 32 air distribution pipes 5 in total, with a pipe diameter of 12mm, which enter the interior of the floating pipe 2 from the middle and upper parts of each pipe section and communicate with the inner tank 3. The ventilation main pipe 6 is long 82.5m, and is a closed pipeline connected end to end, and the pipe diameter is 120mm. The middle part of each pipe section; the rail pipe 9 has a diameter of 120mm and a height of 80cm; the air pump 16 adopts a voltage 380V AC power supply type air pump, the pressure is 1.0MPa, and the air volume is 1200L/min; the net is made of polyethylene material, and the depth is 12m; the cable 15 is used Made of high-strength polyethylene material, the maximum tensile force that can withstand 200 kg, a total of 81 pieces, of which 41 pieces are 1.3m in length, and 40 pieces are 1.0m in length; there is one floating body 11, which is made of HDPE material as a streamlined sealing body. The buoyancy is 200N; the sinker 14 is a streamlined block made of concrete, 81 in total, each weighing 40kg, interlaced with the bottom of the net 13 suspended by cables 15 of different lengths.

The cage lowering operation steps are as follows:

(1) When the net cage needs to sink, unscrew each safety cover 1 on all floating pipes 2 of the eight-mouth lifting net cage, and connect the ventilation hose 10 of each net cage to the lifting support system on the sea surface respectively On the air distribution joint 22 of the flow distributor 17, connect the communication pipe 20 installed on the flow distributor 17 to the air inlet of the air pump 16, open all the air distribution valves 21, start the air pump 16, and slowly close the exhaust valve 19, The air flows from the inner tank 3 through the ventilation hose 10 and the air distribution valve 21, flows into the flow distributor 17, enters the air pump 16 through the communication tube 20, and then is discharged through the exhaust port of the air pump 16. At this time, the inner tank 3 is formed Shrinkage occurs under low pressure, and the water body outside the net cage enters in the floating pipe 2 from the water pipe 7 by siphon action, and the overall weight of the net cage increases, and the net cage begins to sink. Air pump 16 works continuously, and when the negative pressure reading of barometer 18 increases sharply suddenly, closes air pump 16, and net cage is filled with water. The net cage still continues to sink, and until part sinker 14 touches the seabed, the net cage sinks and stops automatically, and this moment, the fishing net is suspended in the water body about 3m high from the seabed, and the whole net cage sinks about 25m. Pull out all ventilation hoses 10, it is arranged on a buoyant body 11 that floats on the sea surface. Cage sinking operation is completed.

(2) When the sinking net cage needs to float up, each ventilation hose 10 is connected to the gas distribution joint 22 of the lifting support system on the sea surface, and the connecting pipe 20 installed on the flow distributor 17 is connected to the air pump 16 Open the corresponding air distribution valve 21, start the air pump, and slowly close the exhaust valve 19. The air flow enters the flow distributor 17 from the air pump 16 through the communication pipe 20, and then passes through the air distribution joint 22, the air distribution valve 21 and the ventilation Flexible pipe 11 enters inner bag 3, and inner bag 3 expands and squeezes the water body in floating pipe 2, forcing the water body to discharge floating pipe 2 through water pipe 7, and the overall weight of the net cage decreases, and the net cage begins to float. The air pump 16 works continuously until the floating tube 2 emerges from the water surface. When the reading of the barometer 18 basically no longer decreases, the water body in the floating tube 2 is removed, the exhaust valve 19 is opened, the air pump 16 is closed, and the ventilation hose 10 and the gas distribution tube are separated. Connector 22, screw all safety covers 1 of every floating pipe on the net cage, and the floating operation of the net cage is completed.

Implementation effect: The eight-mouth lifting net cage sinks about 27m from the sea surface smoothly, steadily and safely, hangs in the lower part of the 40m water body, and can float to the water surface. The net cage goes up and down smoothly, without setting any valves and water pumps, which avoids the problem of corrosion; adopts siphon water intake, and automatically blocks seawater from entering the floating pipe after draining; the pipe network system is simple; avoids the problem of residual water in the floating pipe after the cage is raised ; Simultaneously realize the lifting operation of multi-port net cages; the sinking of the net cages will automatically stop, without the support of floating bodies to support the sinking net cages; the overall technology is simple to implement, high in efficiency and low in cost.

The above are the preferred embodiments of the present invention. Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. Various modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the above disclosure. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims (16)

1. up-down net cage with inner bag is characterized in that comprising:

At least two floating pipes of buoyancy are provided for net cage;

Be positioned at and float inner bag pipe, that pass through gas control realization expansion and shrink;

Be positioned at floating pipe, will float the partition member that pipe is evenly separated plurality of sections;

Be arranged in the middle of the two floating pipes, as the common air chamber of air motion passage;

The steam hose that connects net cage up-down support system and common air chamber;

Inner bag in the floating pipeline section is connected to common air chamber's gas-distributing pipe; And

One end is arranged on floating pipe bottom, the other end is walked around the water service pipe that its top extends to floating pipe bottom again along floating pipe;

The control inner bag expands and shrinks under the effect of net cage up-down support system; The water body of discharging when inner bag expands in the floating pipe is realized the net cage come-up; The outer water body of net cage got into from water service pipe through siphonage and realizes in the floating pipe that net cage sinks when inner bag shrank; When sinking to net cage contact sea bed, sink to stopping automatically.

2. the up-down net cage of band inner bag according to claim 1 is characterized in that: said net cage further is provided with the buoyancy aid that is used to provide buoyancy, and described buoyancy aid connects steam hose.

3. the up-down net cage of band inner bag according to claim 1 is characterized in that: said net cage further is provided with etting, and described etting upper limb closely is suspended on the floating pipe.

4. the up-down net cage of band inner bag according to claim 3 is characterized in that: said net cage further is provided with sinker, and described sinker is arranged on the etting below.

5. the up-down net cage of band inner bag according to claim 1 is characterized in that: said net cage further is provided with to prevent to surge and gets into the safety head in the floating pipe, and described safety head is arranged on the lower edge of water service pipe.

6. according to the up-down net cage of each described band inner bag of claim 1-5, it is characterized in that: said net cage further is provided with the connecting block that links inside and outside floating pipe.

7. according to the up-down net cage of each described band inner bag of claim 1-5, it is characterized in that: said net cage further is provided with connecting block, the standpipe that links inside and outside floating pipe and holds up the rail pipe, and described standpipe links connecting block and holds up the rail pipe.

8. the up-down net cage of band inner bag according to claim 7 is characterized in that: described steam hose is a kind of pressure pipeline, and an end is arranged on the common air chamber, and is bundled on the standpipe.

9. the up-down net cage of band inner bag according to claim 7 is characterized in that: described common air chamber is circular or oval hollow, airtight circulating line, is arranged in the middle of the two floating pipes, passes connecting block.

10. according to the up-down net cage of each described band inner bag of claim 1-5, it is characterized in that: described floating pipe is circular or oval hollow, airtight circulating line.

11. the up-down net cage according to each described band inner bag of claim 1-5 is characterized in that: described inner bag is shaped as cylinder, can radial expansion.

12. up-down net cage according to each described band inner bag of claim 1-5; It is characterized in that: described gas-distributing pipe is a kind of pressure pipeline; From the top of floating pipe each is saved the flexible small pipeline that the inner bag that floats in the pipeline section is connected to the common air chamber, inflate for each inner bag uniformly through gas-distributing pipe.

13. up-down net cage according to each described band inner bag of claim 1-5; It is characterized in that: described water service pipe is a kind of hollow pipe that passage is provided for the floating pipe of water body turnover; One end is arranged on floating pipe bottom, and the other end is walked around its top along floating pipe and extended to floating pipe bottom again.

14. a up-down support system that is used for the up-down net cage of the said band inner bag of claim 1-13, this system is positioned on the sea, is connected to the net cage common air chamber through steam hose, is connected to the inner bag that is installed in the floating pipe through gas-distributing pipe again, and this system comprises:

The air pump of air-flow is provided;

The flow distributor that connects air pump;

The cross over pipe of the gentle pump steam inlet of connection traffic distributor;

The branch gas joint of connection traffic distributor and net cage steam hose;

Be arranged at the gas-separating valve door on the branch gas joint;

Be arranged at the drain tap on the cross over pipe; And

Be positioned at the air gauge on the flow distributor.

15. the up-down support system according to the up-down net cage of the said band inner bag of claim 14 is characterized in that: the container that some minutes gas joints are set on the described flow distributor wall.

16. according to the up-down support system of the up-down net cage of claim 14 or 15 said band inner bags, it is characterized in that: described cross over pipe is a kind of hollow pressure pipeline.

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