10 results about "Freshwater fish" patented technology

This invention belongs to the field of aquaculture equipment and discloses a recirculating aquaculture system for indoor multi-layered culture of freshwater fish germplasm samples. The system includes a stainless steel culture rack, glass culture tanks, a temperature control system, a recirculating water purification system, an aeration system, and electrical and auxiliary materials. Through a three-layered culture structure design, combined with culture tanks of varying sizes and a precise temperature control module, it solves the problem of aquaculture with diverse sizes of freshwater fish germplasm samples and large differences in suitable water temperatures. The system has nine small glass culture tanks in the upper layer and three large glass culture tanks in each of the middle and lower layers, equipped with an external temperature control component and an internal heating rod, achieving full-coverage water temperature regulation from 10℃ to above 30℃. The recirculating water system ensures stable water quality through the synergistic effect of a filter tank, a booster pump, an ultraviolet sterilizer, and various filter media. Meanwhile, the lower culture tanks are equipped with an internal circulation filter to enhance local water purification, meeting the diverse aquaculture needs from small fry to large broodstock.

The present application relates to the technical field of aquaculture, and especially relates to a high-density and high-benefit freshwater fish circulating water breeding method, which uses a high-density and high-benefit freshwater fish circulating water breeding pond, the breeding pond comprises a pond body, a water inlet pipe and a sewage suction pipe, etc.; a sewage ditch is formed on the pond body; the water inlet pipe is connected to the front side of the pond body; the sewage suction pipe is arranged on the back side of the pond body, and a plurality of branch pipes are arranged on the sewage suction pipe and located in the sewage ditch; the water inlet pipe and the sewage suction pipe are connected to an external filtering device, and a water pump is arranged on the filtering device. The present application realizes that the impurities at the bottom of the pond body are pushed backward to the sewage ditch by the scraper, and the straight plate part of the scraper blocks and limits the impurities in the process of backward movement of the scraper, so that the impurities are not lifted, the sewage passes through the water filtering port when the impurities are moved backward by the scraper, and thus the problem that the collection effect of the impurities is reduced due to the backward movement of the pond water caused by the scraper is avoided.

The utility model relates to the technical field of aquaculture, and discloses an oxygenation device for freshwater fish culture, which comprises a floating seat, an antenna is fixedly mounted at the top end of a waterproof cover, an oxygenation and aeration component for aeration and oxygenation is arranged on the bottom side of the floating seat, three telescopic rods are fixedly mounted on the outer side of the waterproof cover in an array manner, and the three telescopic rods are connected with the antenna. A connector is fixedly installed at the telescopic end of the telescopic rod, a floating ball is fixedly installed at the bottom end of the connector, and an anti-collision protection assembly is arranged on the outer side of the floating ball. According to the oxygenation device for freshwater fish culture, the paddle blades are driven to rotate in water, a water curtain can be formed in a water stirring mode to increase oxygen dissolution, a static water body can be activated, water flow can form bubbles through air holes in the paddle blades, the oxygenation and aeration effect is further improved, and the oxygenation effect is improved. Meanwhile, the protective cover covering the outer side of the paddle blade can prevent nearby fishes from being sucked into vortexes to cause injury.

The utility model relates to a freshwater fish breeding technical field, and the utility model discloses a multi-angle adjustable freshwater live fish photographing device, the isolation frame is fixedly arranged in the transparent water tank, a plurality of baffle plates are arranged in the isolation frame, rotating rods are fixedly arranged on the upper and lower sides of the baffle plate, the lifting mesh plate is movably arranged in the transparent water tank and is located at the left side position of the isolation frame, two threaded rods are rotatably arranged on the lifting mesh plate through screw threads, the lower end of the threaded rod is rotatably inserted on the inner bottom wall of the transparent water tank through the bearing, the connecting frame is fixedly arranged on the left side of the upper portion of the transparent water tank, the driving rod is rotatably arranged in the connecting frame through the bearing, the upper end of the threaded rod is rotatably inserted in the connecting frame through screw threads and is drivenly connected with the driving rod through the bevel gear pair, the motor is fixedly arranged on the front side wall of the connecting frame, the camera is fixedly arranged on the three-axis electric pan-tilt head, the activity range of fish can be limited, the fish need not be frequently fished out to cause the stress reaction, and the fish can also be prevented from swimming randomly to be difficult to capture the clear photo.

The application discloses a fish rotten product processing method, and belongs to the technical field of aquatic product deep processing and food processing, and steps include: raw material pretreatment and preparation of composite puffing aid, chopping and emulsifying and micro-bubble introduction, low-temperature pre-gel forming, gradient microwave-hot air combined puffing, and rapid cooling. The application realizes pore uniformization by constructing a moderate cross-linking puffable weak gel network, introducing micro-bubble stabilizing technology, and replacing traditional oil frying with gradient microwave-hot air combined puffing, and prepares fish rotten products with uniform honeycomb porous structure, low oil content and excellent taste, and the parameter linkage control can be simultaneously applied to marine fish and freshwater fish raw materials. The application has novel process, remarkable synergistic effect, excellent product texture, and good industrial application prospect.

This utility model relates to the field of fishing equipment technology and discloses a deep-sea intelligent fishing net for freshwater fish in lakes. It includes a fishing net placed underwater and a fixed base embedded on the shore. A winch is fixedly installed on the top of the fixed base, and a take-up rope is wound around the outside of the winch's take-up roller. Fixed rings are fixedly installed at the four corners of the top side of the fishing net, and ropes are fixedly installed on the top of the fixed rings. A connecting seat is fixedly installed at the other end of the ropes. A gathering component for lifting the fishing net above the water surface is provided on the outside of the ropes. Starting the servo motor drives the main pulley to rotate, which in turn drives the secondary pulley to rotate via the transmission belt. This causes the gears to roll along the outside of the ropes, moving the entire outer shell closer to the fishing net. Simultaneously, the buoyancy of the main float and side floats further lifts the fishing net upwards, facilitating the harvesting of adult fish and improving harvesting efficiency.

The utility model provides a novel freshwater fish factory recirculating aquaculture system which comprises an aquaculture pond, a vertical flow precipitator, a microfilter pond, a biochemical air floatation pond, a sand cylinder filter, a nano denitrification system and a multi-stage air stripping system, the aquaculture pond is respectively connected with the vertical flow precipitator and the microfilter pond, the vertical flow precipitator is connected with the microfilter pond, the biochemical air floatation pond is connected with the sand cylinder filter, and the nano denitrification system is connected with the biochemical air floatation pond. The biochemical air floatation tank is connected with the microfilter tank through a pipeline, the biochemical air floatation tank comprises an air floatation bin, a pump bin, a biochemical bin and a denitrification bin, and the pump bin is respectively connected with the sand cylinder filter, the nano denitrification system and the multi-stage air stripping system through pipelines; and circulating pumps are arranged on pipelines for connecting the pump bin with the sand cylinder filter, the nano denitrification system and the multi-stage air stripping system. According to the utility model, the multi-stage cooperative treatment system is constructed and the denitrification system is introduced, so that the total nitrogen removal rate of the culture system is increased to 96%, which is increased by 140% compared with that of the traditional system, the water supplementing amount of the system is reduced, the daily water supplementing amount is reduced to be less than 3%, and the water-saving rate of the total circulating water amount is more than 70%.

This utility model relates to the field of fish farming technology and discloses a ring-shaped spawning induction tank for freshwater fish breeding. The tank includes a tank body with a sloping bottom plate fixedly installed on the lower inner wall. A bottom sealing plate is fixedly installed at the bottom of the tank body. A sealing rotating ring A is embedded inside the sloping bottom plate. A connecting pipe is rotatably installed inside the sealing rotating ring A. A sealing gasket is fitted on the outer side of the connecting pipe and embedded in the inner wall of the sealing rotating ring A. Through holes are provided on the sloping surface and top of the connecting pipe. A motor reducer drives a drive gear to rotate, which in turn drives a transmission gear to rotate. The transmission gear rotates the connecting pipe synchronously, which in turn rotates four curved scrapers that slowly rotate. The curved scrapers are bent and scrape the excrement towards the central connecting pipe, thus automatically cleaning the excrement from the sloping bottom plate.

The utility model relates to the technical field of fishing equipment, in particular to a fishing net pulling device which comprises a base, two sets of net pulling mechanisms symmetrically arranged on the two sides of the base and used for pulling fishing net ropes and a plurality of guide roller mechanisms independent of the base and used for guiding the fishing net ropes. The device solves the problems that a large amount of labor is needed and time and labor are wasted when an existing fresh water fishing net is dragged, and the device can conduct mechanical auxiliary dragging on a fishing net rope, so that manual force application is replaced, personnel allocation is greatly reduced, the working intensity of personnel is reduced, the fishing efficiency is improved, and the danger of manual operation is also reduced.

This invention discloses an adaptive cooperative PID control method and system suitable for freshwater fish processing, applied to fish processing equipment including a conveying module, a descaling module, and a gutting module. The method collects multi-dimensional feature data of the fish bodies on the processing line, as well as the operating status data of each processing module. Based on the multi-dimensional feature data, a multi-feature fusion recognition algorithm is used to classify the current fish body according to its size. Based on the result of the fish body size classification, the corresponding initial PID parameters are called, and the PID parameters are dynamically self-tuned based on feedback from the operating status data during processing. Using the operation of a certain processing module as a benchmark, the PID control parameters of other related processing modules are dynamically calculated and adjusted according to a preset cooperative control model. Control commands are generated based on the tuned PID parameters to drive the motors of each processing module. This solves the problems of high damage rate and low pass rate in existing freshwater fish processing, improving processing consistency and stability.