40 results about "Aquaculture engineering" patented technology

The invention discloses a fresh water scale pond ecological breeding system. The system comprises five parts, namely a breeding pond, a pond water normal-position distributed treatment part, a pond discharge water abnormal-position centralized treatment part, a backwater function recovery treatment part and a pond water quality compensation treatment part. Breeding water aquatic ecology, pond breading and an aquaculture engineering technology are integrated organically; and pond microcirculation is formed through absorption, decomposition and nitrification functions of microorganisms, algae and the aquatic plants, particularly continuous removal of aquatic plants with growth and intermittent water supply, so that the utilization rate of pond eutrophic substances is improved, and breeding backwater is restored. The system has the remarkable effects of water saving and emission reduction and provides the high-efficiency pond ecological breeding system which is novel in process and is high in operability and economic and practical and has a unique structure for fishery industrialization and scale production.

The invention provides an integrated system of a floating offshore wind generator and a deepwater aquaculture net cage, and belongs to the technical field of marine renewable energy and aquaculture engineering. The integrated system comprises a wind generation system, a floating deepwater aquaculture system and an anchoring chain system, wherein the wind generation system comprises wind generators and a semi-submersible offshore floating platform; the semi-submersible offshore floating platform comprises an upper floating body, circular vertical columns and a lower floating body; the upper floating body and the lower floating body are of circular ring structures and are connected through three circular vertical columns; three wind generators are circumferentially uniformly distributed on the upper floating body; the floating deepwater aquaculture system comprises a closed circular net cage and pressing blocks; the upper part of the closed circular net cage is fixed to the bottom part of the lower floating body, and the lower part of the closed circular net cage is circumferentially uniformly provided with the pressing blocks; the wind generators of the wind generation system are used for supplying power to the floating deepwater aquaculture system; the anchoring chain system is an anchoring chain; one end of the anchoring chain is fixed to the lower floating body, and the other end of the anchoring chain is connected to a seabed, so that the lower floating body is connected to the seabed.

The invention provides a remote gate control system and a remote gate control method. The remote gate control system comprises a far-end upper computer, a gate motor control module and a power module; the control system acquires data of a gate level sensor and a water level sensor for processing, the data are stored after being added with time labels with set time intervals, and date and time are provided by a clock chip; the remote gate control system runs according to selective types and set parameters. Gate telemetering and remote controlling requirements are realized, timeliness, safety and reliability in gate control are guaranteed, various harsh field environments are adapted to, and manual control or automatic control can be performed on the spot. Modernization management level of enclosed beach pond aquaculture engineering is improved, labor cost is lowered, and working efficiency is improved.

The invention belongs to the technical field of aquatic culturing engineering, and particularly relates to a trachidermus fasciatus breeding and culturing workshop system for simulating the natural ecological environment. A workshop system for simulating the field habitat is built according to the ecological habit of trachidermus fasciatus, and comprises a hard ecological environment system and a soft ecological environment system. The ecological environment built by the system can completely meet the requirements of trachidermus fasciatus in each period, such as breeding, migration and growth, so the scale production of full-manual breeding and culturing of trachidermus fasciatus is realized. The system can continuously build and expand the manual species of trachidermus fasciatus, and meet the requirement of trachidermus fasciatus fries, fingerlings and adult fishes required by science research, enhancement and releasing, and development and utilization. Compared with the conventional intensive culturing mode, the system has the advantages that the construction cost and running cost are greatly reduced, the culturing benefit is greatly improved, and the application prospect is wide.

The invention provides a double-column trough type barrier net aquaculture engineering bank connecting technology which comprises column piles, a barrier net, a fixed rod and a groove, wherein the fixed rod and the column piles are connected, the column piles are connected with a net tying rod, the barrier net is respectively connected with the net tying rod and the groove, the bottom ends of the column piles are connected with pipe foundations, and the barrier net is connected with the groove through filled blocks; and each of the filled blocks comprises the following components in parts by weight: 10-60 parts of natural rubber, 10-40 parts of modified starch grafted acrylic polymers, 0.3-3 parts of sulphur, 1-1.5 parts of alcohol ether carboxylate, 1-2 parts of a vulcanization accelerant, 1-5 parts of zinc oxide, 2-3 parts of nipagin complex ester, 0.5-2 parts of stearic acid, 15-25 parts of calcium carbonate, 8-15 parts of engine oil and 0-1 parts of pigment. Channeling is performed on the basis of the offshore initial landform creatively to form the groove with certain depth and width and used for burying and fixing the bottom of the barrier net. The double-column trough type barrier net aquaculture engineering bank connecting technology is simple to implement, stable in structure and low in cost, a culturing device is high in corrosion resistance and wear resistance, the barrier net is difficult to damage, and the culturing safety and escape prevention performance are high.

The invention belongs to the field of aquaculture engineering, and particularly relates to a split type surface-layer waste collector suitable for a circulating water shrimp culture system to allow live shrimps to return to a pool by themselves. A backwater waste discharge groove is communicated with a water flow distribution tank through a communication pipe, a live shrimp anti-escape basket is detachably placed in the backwater waste discharge groove, a culture pool drainage pipe is connected with the backwater waste discharge groove, and the live shrimp anti-escape basket is provided with a channel for live shrimp returning to the pool; the water flow distribution tank is connected with an intermittent backwater drainage pipe and a normally open drainage pipe respectively, an intermittent backwater level difference adjustment pipe is inserted into one end of the intermittent backwater drainage pipe, a water level adjustment pipe is inserted into one end of the normally open drainage pipe, the other end of the intermittent backwater drainage pipe and the other end of the normally open drainage pipe are connected with a main backwater pipeline, and a valve is installed on the intermittent backwater drainage pipe. The waste collector is combined with an intermittent backwater aquaculture technology for shrimp farming by using circulating water, shrimp shells and dead shrimps can be collected conveniently, overflowing and shrimp escape are prevented, and installation, disassembly and washing are convenient.

The invention belongs to the field of aquaculture engineering, and particularly relates to a pore-adjustable turntable type bottom blowdown device for a shrimp breeding pond. The two ends of a bend are communicated with one end of a drainage pipeline B and a drainage pipeline A respectively, and the bottom of the other end of the drainage pipeline B passes through a threaded hole formed in a pinchplate and is connected with a chassis, and the other end of the drainage pipeline B is provided with a through hole, the outer surface of the portion between the two ends of the drainage pipeline B is provided with an external threaded section, and the pinch plate forms a helical pair with the external threaded pipe through the threaded hole; the chassis is placed on the bottom surface of the shrimp breeding pond, through the helical pair formed by the pinch plate and the external threaded plate, the pinch plate is rotated to achieve lifting relative to the drainage pipeline B, and the size of a sewage discharge pore formed between the lower end of the outer edge of the pinch plate and the bottom face of the shrimp breeding pond is adjusted; the outer edge of the pinch plate is provided with a living shrimp anti-escape tooth for preventing living shrimps from getting close to the sewage discharge pore. According to the size of the living shrimps, the size of the sewage discharge porein the bottom of the shrimp breeding pond can be adjusted conveniently, sewage discharging is facilitated while the living shrimps are prevented from escaping.

The invention belongs to the aquaculture engineering field, and particularly relates to a closed circulating aquaculture system suitable for multilayer stereoscopic cultivation of abalone. The circulating aquaculture system suitable for the multilayer stereoscopic cultivation of the abalone is characterized in that a plurality of aquaculture tanks are installed on a support, a plurality of wave generation hoppers hinged on the support are arranged above each aquaculture tank, the interior of each aquaculture tank is divided into a plurality of tank bodies which are communicated, one water outlet side of each aquaculture tank is communicated with a filter tank, the lower portion of each filter tank is a sewage collection tank, a filter device is arranged on the upper portion of each filter tank, all the filter tanks are respectively communicated with a temperature regulation box with a heat exchanger installed inside, the heat exchanger is communicated with a refrigerator, temperature of seawater is controlled through the refrigerator and the heat exchanger, a water pump, a foam separator, a biological tank and an oxygen tank are sequentially communicated with the temperature regulation box, the foam separator is communicated with a jet injector, and an aeration disk communicated with an air pump us arranged in the biological tank. The circulating aquaculture system suitable for the multilayer stereoscopic cultivation of the abalone has the advantages of continuously reusing aquatic water, being capable of controlling temperature, manually generating waves, achieving rapid and thorough water purification treatment, being convenient to operate, saving energy and protecting environment and the like.

The invention relates to a variable-flow relay type circulating water culture method for fishes in the technical field of aquaculture engineering. According to physiological metabolism rules of fishes, the circulation rate is reduced before feeding, the water circulation flow of a system is improved after feeding, discharge of solid particles such as residual feed excrement out of culture ponds isaccelerated, after most of solids are discharged, the circulation rate is returned to a normal level, the water quality is kept constant basically, and healthy growth of the fishes is guaranteed. Themethod contributes to fish ingestion and can strengthen the sewage discharge efficiency of the fishponds and guarantee culture water quality safety; through combination of different specifications ofculture ponds, different specification sizes of fishes can be cultured in a same culture system, the load borne by the culture system is kept in a nearly saturation state, and the operation energy efficiency of the culture system is improved; and through automatic control by various valves, liquid level sensors, variable frequency pumps and other equipment, the problem of damage of water balanceof the system due to circulation capacity change is solved, and the adjustable circulation capacity of the circulating water culture is realized.

The invention belongs to the field of aquaculture projects, and particularly relates to a rising and falling flow culture facility suitable for juvenile mollusk culture. The facility comprises a culture tank, tray type culture frames, a two-way adjustable water inflow and drainage system, a water level regulator and a water treatment system. The tray type culture frames are arranged in the culture tank and can be flexibly installed and transferred; bolting-silk nets of the tray type culture frames can be conveniently and rapidly detached and replaced, and the effective culture area is large; juvenile mollusks on culture trays can be located in a falling flow field or a rising flow field by regulating valves of the two-way adjustable water inflow and drainage system, and the facility can adapt to culture of juvenile mollusks at different growth stages; the water level and flow rate of the culture system can be regulated through the water level regulator. The facility is suitable for culture of metamorphosed juvenile mollusks to large-size seedlings, can effectively increase the juvenile mollusk culture density per unit area, can meet the requirements of juvenile mollusks for water flow at different growth stages through simple adjustment and is an efficient circulating aquaculture facility adapting to large-scale culture of juvenile mollusks.

The invention belongs to the field of aquaculture engineering, particularly relates to an efficient full-time double-layer-flowing pollution discharging device. The efficient full-time double-layer-flowing pollution discharging device comprises a surface overflowing pollution discharging unit, a bottom surging pollution discharging unit and a flow varying and adjusting unit, wherein the surface overflowing pollution discharging unit is used for removing foam floating objects on the surface of an aquaculture water body, the bottom surging pollution discharging unit is used for removing sewage at the bottom of the aquaculture water body, and the flow varying and adjusting unit is used for high-speed pollution discharging. When water inflowing and water outflowing of an aquaculture system are normal, biological excrement in the water body can be discharged through a surface flow and a bottom flow at the same time, and especially, short-time efficient pollution discharging can be realized by changing a drainage water level difference by automatically controlling and opening an electric valve timely or manually plugging in or unplugging a water level adjusting unit. The efficient full-time double-layer-flowing pollution discharging device is applicable to pollution discharging of culturing ponds, made of different materials, in an industrialized recirculating aquaculture system, especially suitable for culturing tanks which are free of pre-buried bottom pollution discharging structures and made of flexible materials, and capable of overcoming the difficulty in pollution discharging at the bottom of the water body.

The invention belongs to the field of aquaculture engineering and particularly provides an automatic high-density cultivation system and method for rotifers. The system mainly comprises a source water treater, an ultrasonic sterilizer, an aquaculture tank, a microfiltration device, a water storage tank, an oxygen generator, an air pump, a booster pump, water level sensors, an electronic controller and the like. The method comprises steps as follows: when the system starts a water changing process automatically or manually, water enters the microfiltration device through solenoid valves and an air-lift pipe in sequence, meanwhile, the water level sensors are triggered, a drive motor, a back washing pump and the air pump are started, the rotifers and resting eggs are filtered by the microfiltration device and then flow back to the aquaculture tank, aquaculture wastewater containing excrement waste is discharged into a drain tank and flows out of the system through an overflow port after secondary filtration, when water level in the aquaculture tank is reduced to cause re-triggering of the water level sensors, the solenoid valves are closed to stop water discharge, a water supplementing program is started until the water level returns to normal, and the process enters a next countdown cultivation period. Key parameters of the system can be set manually, and automatic high-density cultivation of the rotifers can be realized.

The invention belongs to the technical field of ocean renewable energy sources and aquaculture engineering, and discloses floating type offshore wind power generation and deep sea aquaculture net cage fusion equipment. The equipment comprises a wind driven generator, a cabin, a tower barrel structure, a barge type offshore floating type platform, baffles, an anchor chain, a stand column, a netting, an inclined rod, a cross rod and a floating barrel, the wind driven generator is installed on the barge type offshore floating type platform through a tower barrel, the cabin is arranged at the top end of the tower barrel, and the cabin is connected with a rotor on the wind driven generator; and the baffles are evenly arranged on the periphery of the bottom of the barge type offshore floating type platform, and an aquaculture net cage is arranged at the lower end of the barge type offshore floating type platform. The advantages that a floating platform is wide in application range and flexible to install are effectively utilized, the equipment is simple in structure, the construction and operation cost can be reduced, the marine resource utilization rate is increased, the practical value is high, and industrial application of the equipment can be effectively promoted.

The invention provides a remote gate control system and a remote gate control method. The remote gate control system comprises a far-end upper computer, a gate motor control module and a power module; the control system acquires data of a gate level sensor and a water level sensor for processing, the data are stored after being added with time labels with set time intervals, and date and time are provided by a clock chip; the remote gate control system runs according to selective types and set parameters. Gate telemetering and remote controlling requirements are realized, timeliness, safety and reliability in gate control are guaranteed, various harsh field environments are adapted to, and manual control or automatic control can be performed on the spot. Modernization management level of enclosed beach pond aquaculture engineering is improved, labor cost is lowered, and working efficiency is improved.

The invention discloses a net cage netting damage detection method and device based on a mathematical twinborn technology and a storage medium, and relates to the technical field of disaster prevention and reduction of aquaculture engineering and ocean engineering, and the method develops a digital twinborn body for netting damage detection by using a method of combining numerical simulation and an artificial neural network. The identification model can carry out rapid damage identification according to environmental parameters and tension sensing data. Firstly, an equivalent numerical model of the fishing net is used for simulating the completeness and damage conditions of the fishing net to obtain a large amount of simulation sensing data, then the data are used for training an artificial neural network, the artificial neural network can identify whether the netting is damaged or not according to different simulation sensing signals, and finally, according to the real sensing data, the artificial neural network can identify whether the netting is damaged or not. The identification model can rapidly identify whether the netting is damaged or not. According to the invention, real-time damage monitoring of the fishing net is realized, the labor cost is saved, the detection efficiency is improved, and the limitation of netting or environmental interference is overcome.

The invention provides an integrated system of an ocean tidal current energy power generation device and a buoyant raft type aquaculture structure, and belongs to the technical field of ocean engineering and aquaculture engineering. A turbine generator is connected with a buoyant raft through a lifting rod, the turbine generator is in rigid connection with the lifting rod, the lifting rod is connected with a cross beam of the buoyant raft through a bolt, the buoyant raft is fixed to an anchorage of the seabed through an anchor rope and an anchor chain, a hanging lifting rope is arranged on the buoyant raft, and shellfish is attached to the lifting rope; the tidal energy turbine generator is connected with a deep sea floating buoyant raft type aquaculture device, electric energy generated by the turbine generator can provide power for the deep sea floating buoyant raft type aquaculture device, due to existence of the floating buoyant raft type aquaculture device, a flow increasing area exists on the bottom of the raft type aquaculture structure, the flow speed of the flow increasing area is obviously larger than the surrounding environment flow speed, the power generation efficiency of the turbine generator can be greatly improved, economy of the integrated system is improved, and the device has the beneficial effects of being simple in structure, convenient to manufacture and capable of having the higher practical value.

The invention relates to a device for water-surface aquaculture engineering, which is applied to the large-scale culture of algae, mussels, abalones, sea cucumbers, crabs, fish and shrimps on open water surface such as sea surface. The device comprises a net-shaped base support formed by ropes with floaters in spaced regular arrangement, a support formed by pipes, a pile-cable unit, and a culture vessel supported by the supporting units and fixed by the pile-cable unit. The net-shaped base support with floaters is fully or partially separated from the culture vessel and other floater supports, thereby forming a 'floating-pipe movable base' culture device. The pipe-based support has multiple units in geometric shape. The multiple units of the pipe-based support are in detachable arrangement and connected to one another, and serve as gas passages to form a part of a gas distributor. The device is applied to the large-scale culture of aquatic animals on open water surface and has the advantages of low cost, firm structure, resistance to wind and waves, and convenience for installation and removal of large-area culture vessels.

The invention belongs to the field of aquaculture engineering, and particularly relates to a diameter-increasing filtering device and method for suspended solids in mariculture. The device comprises an electronic controller, and an electric flocculation reactor, a coagulation stabilizer and a micro-filter which are connected with the electronic controller. The electric flocculation reactor is provided with an electric flocculation reactor water inlet and a water outlet pipeline, and the water outlet pipeline of the electric flocculation reactor is connected into the coagulation stabilizer and used for conducting diameter increasing treatment on the suspended solids of the culture water body; one side of the coagulation stabilizer is connected with an electric flocculation reaction system, and the other side of the coagulation stabilizer is provided with a pipeline connected into a microfiltration control system, so that the suspended solids in the culture water body are subjected to aeration treatment; the micro-filter is used for physically filtering the suspended solids in the culture water body; and the electronic controller is used for controlling the coagulation stabilizer to work so as to realize aeration treatment of suspended solids in the culture water body. The particle size of the suspended solids is increased through an electric flocculation technology, and the removal efficiency of the suspended solids in the culture water body can be improved under the condition that the filtering pore diameter of original filtering equipment is not changed.

The invention belongs to the field of aquaculture engineering, and particularly relates to an ecological economical abalone culture system. The system comprises a water storage pond, a biochemical treatment pond, an algae purification pond, a seawater circulation purification system and a plurality of abalone culture ponds. The water storage pond, the biochemical treatment pond and the algae purification pond are communicated in sequence, and the algae purification pond is further communicated with the plurality of abalone culture ponds in parallel. The water inlet end of the seawater circulation purification system is communicated with the plurality of abalone culture ponds, and the water drainage end of the seawater circulation purification system is communicated with the biochemical treatment pond. The culture system is suitable for being transformed on the basis of a traditional culture pond, gravitational potential energy is fully utilized to push seawater to flow in the system, the construction and operation cost of the system is remarkably reduced, and meanwhile the culture system has the advantages of being stable, controllable and environmentally friendly as a traditional circulating water culture system. Meanwhile, the ecological food chain principle is fully utilized, and the utilization efficiency of biological resources in the system is optimized.

The invention belongs to the technical field of ocean regenerative energy and aquaculture engineering. A fishing-light complementary integrated system for deep-sea culturing comprises a solar power generation system, a deep-sea semi-submersible intelligent culturing system, an anchor chain system and a propelling device. In the fishing-light complementary integrated system for deep-sea culturing,solar power generation and deep-sea culturing device are combined, a semi-submersible ocean platform is shared, and electric quantity generated by the solar system can be used for providing power forthe culturing device; compared with a single marine culture net box, the fishing-light complementary integrated system has the advantages that far-sea power transmission is prevented, and the economyof the system is greatly improved; and the device is simple in structure and has relatively high practical value.

The invention belongs to the field of aquaculture engineering, and particularly relates to a pore-adjustable rotary-rod type bottom blowdown device for a shrimp breeding pond. The two ends of a bend are communicated with one end of a drainage pipeline B and a drainage pipeline A respectively, and the other end of the drainage pipeline B is connected with a pinch plate; the bend is provided with aninternal threaded pipe, a vertical shaft passes through the internal threaded pipe, one end of the vertical shaft is a free end, the other end of the vertical shaft is rotatably connected with a chassis, and a vertical-shaft external threaded section forming a helical pair with the internal threaded pipe is arranged on the vertical shaft; the chassis is placed on the bottom surface of the shrimpbreeding pond, lifting of the bend, the drainage pipeline A, the drainage pipeline B and the pinch plate are achieved by rotating the vertical shaft, and thus the size of a sewage discharge pore formed between the lower end of the outer edge of the pinch plate and the bottom face of the shrimp breeding pond is adjusted; the outer edge of the pinch plate is provided with a living shrimp anti-escapetooth for preventing living shrimps from getting close to the sewage discharge pore. According to the size of the living shrimps, the size of the sewage discharge pore in the bottom of the shrimp breeding pond can be adjusted conveniently, sewage discharging is facilitated while the living shrimps are prevented from escaping.

The invention provides an integrated management aquaculture engineering ship. The ship comprises a ship body, a fish-farming water cabin, a mobile platform transfer station, a mobile platform and a circular orbit which is disposed around the top of the fish-farming water cabin. The mobile platform is connected with the circular orbit and capable of moving along the circular orbit, and the lowest position of the mobile platform is higher than the water line of the fish-farming water cabin; the mobile platform transfer station is arranged below the circular orbit, and the top of the mobile platform transfer station is lower than the bottom of the mobile platform; the ship body is provided with transverse watertight bulkheads, and the fish-farming water cabin is divided into a plurality of cabin bodies by the transverse watertight bulkheads, each transverse watertight bulkhead is provided with an automatic watertight door used for allowing the mobile platform to pass through; the circular orbit is disconnected at the automatic watertight doors, and the distance between every two disconnected portions of the circular orbit is larger than the thickness of each automatic watertight door. The problem about passageways of managers and fish feed in-out trolleys on the ship is solved, and the automation level of the aquaculture engineering ship is improved.

The invention discloses large ocean engineering equipment for regularly lifting out an oyster breeding suspending cage from the water surface, and relates to the technical field of aquaculture engineering. The equipment comprises a base platform, a scallop platform and a passing platform, wherein the base platform is of a square structure; the base platform is provided with twelve support columns;the passing platform is arranged above the base platform; the passing platform is supported by the support columns on the base platform; and the scallop platform is arranged between the passing platform and the base platform. According to the large ocean engineering equipment for regularly lifting out the oyster breeding suspending cage from the water surface, time of leaving water is provided for oyster growth, oysters are enabled to receive sunlight and air, the content of polysaccharides, taurine and glutamic acid in the oysters is increased, the mouth feel is fresher and sweeter, and meanwhile, according to relevant researches, the sale price of the oysters is three times that of ordinary oysters; and the oysters are lifted out of the water surface, so that a breeding water body is ensured to have purification time and a certain protective effect is achieved for ocean ecology.

The invention belongs to the field of aquacultural engineering, and particularly relates to a large-scale high-density oyster spat breeding system. Seawater is purified through a source water treatment device, then enters a biological purifying pool, is pressurized through a water pump and flows through a filling port of a bait trickling pump, seawater carrying high-concentration bait enters a high-density breeding container through an annular spraying-type water incoming pipe, and water flow converges at the bottom of a conical body of the breeding container to be lifted through an air-lift diversion pipe and flows out of the breeding container through a combined-type filtering drum to reenter the purifying pool. The purifying pool is provided with porous fiber filtering cotton, biological filler and a microalgae vitality restoring device, and an aerator pipe is connected inside the air-lift diversion pipe. By the large-scale high-density oyster spat breeding system, bait utilization rate is remarkably increased, closed recycling of breeding water is realized, and the defect that conventional shellfish breeding is large in occupied space, high in water consumption, low in bait utilization rate, large in labor operation quantity and the like is overcome effectively.

The invention discloses an all-in-one machine integrating temperature, luminosity and water flow detection, and belongs to the technical field of facility aquaculture engineering. The device in the invention comprises a first floating body and a second floating body; the first floating body is shaped as a circular ring; furthermore, a circular inner hole is formed in the middle part of the first floating body; the second floating body is shaped as a circular ring; furthermore, a circular inner hole is formed in the middle part of the second floating body; the second floating body is fixedly connected with the first floating body through a first support part; the first support part and the axial lead of the second floating body are arranged in parallel; a first current meter is arranged onthe first support part; a water pressure sensor, a thermometer and a second control unit are installed on the second floating body; the first current meter, the water pressure sensor and the thermometer are respectively connected with the second control unit; and a luminosity sensor is installed on the second control unit. According to the device in the invention, data is wirelessly collected by multi-point placement and detection in an actual detection process; furthermore, the data accuracy interference is small; and the problem that a detection device needs to be connected and controlled inlarge range detection currently can be effectively solved.

The invention belongs to the field of aquaculture engineering, and specifically relates to a bottom sewage discharge device for a turntable shrimp pond with adjustable pores. The other end of the drain pipe B is passed through the threaded hole opened on the pinch plate, and the end is connected to the chassis. The other end of the drainage pipe B is provided with a through hole; Through the threaded hole and the external thread section to form a spiral pair; the chassis is placed on the bottom of the shrimp pond, through the spiral pair between the pinch plate and the external thread section, the pinch plate is rotated to realize the lifting of the pinch plate relative to the drainage pipe B, and then adjust the pinch The size of the sewage suction hole formed between the lower end of the outer edge of the plate and the bottom surface of the shrimp pond; the outer edge of the pinch plate is provided with live shrimp anti-escaping teeth to prevent live shrimp from close contact with the sewage suction hole. The invention can conveniently adjust the sewage suction pores at the bottom of the shrimp culture pond according to the specifications of the live shrimp, which is beneficial to the discharge of the dirt and prevents the live shrimp from escaping.

The invention provides a support rod type purse seine aquaculture engineering shore connecting technique. A purse seine, a support rod and a pile foundation are included, the bottom of the support rod is connected with the pile foundation, a fixing support is connected to the top end of the support rod, a groove is formed under the support rod, and the purse seine is connected with the support rod and the groove separately and connected with the groove through an expansion block; the bottom end of the support rod is provided with a hemisphere, the surface of the support rod is provided with a round convex block, the bottom end of the support rod is connected with the pile foundation through concrete pouring, the surface of the support rod is provided with a seine tying ring, and the purse seine is connected with the support rod through the seine tying ring. Groove excavating is conducted under the support rod to form the groove with the certain depth and width, then the purse seine is filled with the prepared expansion block for fixing, therefore, it is guaranteed that fixation between the purse seine and a seashore is effective for a long time, the fixing effect is obviously improved and is excellent, and an anti-escape effect is achieved and is excellent. According to the technique, implementation is easy, the structure is stable, a netting is not prone to be damaged, the fixing equipment is resistant to corrosion, and the aquaculture safety and the escape resistance are high.

The invention relates to a pipeline layout system for a snorkeling aquaculture net cage and an operation ship, and belongs to the technical field of fishery aquaculture. The pipeline layout system comprises a pipeline integration structure module and an integrated pipeline layout module; the pipeline integration structure module is used for packaging and integrating a bait pipe, an air pipe and adead fish recovery pipe into an integrated pipeline; the integrated pipeline layout module is used for laying the integrated pipeline in three sections including an aquaculture net cage end movable pipeline, a fixed section pipeline and an operation ship end movable pipeline; the fixed section pipeline is positioned between the aquaculture net cage end movable pipeline and the operation ship end movable pipeline; the layout direction of the integrated pipeline is parallel to the direction of an aquaculture net cage positioning anchor chain pointing to the operation ship, and the aquaculture net cage end movable pipeline is laid in an 'S'-shaped manner. By the aid of a pipeline integration structure, kinking of the pipeline can be effectively avoided, the problems of easiness in kinking andpoor functionality of an aquaculture net cage external pipeline under severe wind wave conditions of deep sea are solved by sectioned layout, and good technical support is provided for deep-area aquaculture engineering.

The invention belongs to the field of aquaculture engineering and specifically relates to a substratum for producing oyster monomer fries and a fry collection device matched with the substratum. A substratum monomer consists of a support rod and a strip-shaped black rubber cloth suspended on the support rod, wherein the density of the strip-shaped black rubber cloth is about 1.4g / cm<3>, the strip-shaped black rubber cloth has sinking characteristics, and a stretch rate of the strip-shaped black rubber cloth is larger than 4.5. According to the substratum for producing the oyster monomer fries and the fry collection device matched with the substratum, production of the oyster monomer fries does not depend on abnormal induced drugs, fry collection facilities can be all recycled, and any damages are hardly produced during fry stripping.

The invention belongs to the aquaculture engineering field, and particularly relates to a closed circulating aquaculture system suitable for multilayer stereoscopic cultivation of abalone. The circulating aquaculture system suitable for the multilayer stereoscopic cultivation of the abalone is characterized in that a plurality of aquaculture tanks are installed on a support, a plurality of wave generation hoppers hinged on the support are arranged above each aquaculture tank, the interior of each aquaculture tank is divided into a plurality of tank bodies which are communicated, one water outlet side of each aquaculture tank is communicated with a filter tank, the lower portion of each filter tank is a sewage collection tank, a filter device is arranged on the upper portion of each filter tank, all the filter tanks are respectively communicated with a temperature regulation box with a heat exchanger installed inside, the heat exchanger is communicated with a refrigerator, temperature of seawater is controlled through the refrigerator and the heat exchanger, a water pump, a foam separator, a biological tank and an oxygen tank are sequentially communicated with the temperature regulation box, the foam separator is communicated with a jet injector, and an aeration disk communicated with an air pump us arranged in the biological tank. The circulating aquaculture system suitable for the multilayer stereoscopic cultivation of the abalone has the advantages of continuously reusing aquatic water, being capable of controlling temperature, manually generating waves, achieving rapid and thorough water purification treatment, being convenient to operate, saving energy and protecting environment and the like.