A fish fry rearing tank

Abstract

The utility model discloses a kind of fry breeding box, by physical filtration area, biological filtration area, oxygen supply system and intelligent control system are integrated design, realize the efficient purification and recycling of aquaculture water body. Physical filtration area adopts the design of slanted bottom cooperation automatic sewage collection structure, biological filtration area is maintained water quality stability by nitrifying bacteria automatic addition and combined filter material, oxygen supply and disinfection module work together to guarantee oxygen safety, intelligent control system monitors environmental parameter in real time and executes protective control strategy, effectively solve the technical problems of traditional breeding box maintenance frequently, water quality fluctuation, fry survival rate is low, with the technical advantages of high filtration efficiency, convenient operation, water quality stable controllable.

Description

Technical Field

[0001] This utility model relates to the field of fish fry farming, and in particular to a fish fry farming box. Background Technology

[0002] As is well known, aquaculture is the practice of humans using aquatic waters for aquaculture, according to the ecological habits of the aquatic organisms and their requirements for aquatic environmental conditions, and employing aquaculture technology and facilities to raise aquatic economic animals and plants. It is one of the agricultural production sectors, and aquaculture tanks are used when raising fish fry.

[0003] Traditional fish fry farming equipment generally suffers from technical defects such as low filtration system efficiency, complex water quality maintenance, and the potential for disinfection processes to damage beneficial microbial communities. This leads to easily turbid water, fluctuating fry survival rates, and frequent manual intervention. Existing technologies mostly employ a single filtration method, which struggles to effectively balance the needs of physical impurity interception and biological purification. Furthermore, they lack intelligent control mechanisms, failing to achieve real-time monitoring and automatic compensation of water quality parameters, and thus failing to meet the dual demands of large-scale aquaculture for water quality stability and ease of operation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a fish fry breeding box.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a fish fry rearing box, comprising a rearing box body, an internal rearing trough, a small oxygenator installed at one end of the rearing box body, the small oxygenator being embedded in the surface of the rearing box body and connected to an oxygen supply pipe at its top, and the rearing box body further comprising:

[0007] A physical filtration zone is set at the bottom of the breeding tank and includes an inlet pipe, a first water pump and a filter screen. The inlet end of the inlet pipe is connected to the bottom of the breeding tank and its outlet end is connected to the inlet of the first water pump. One end of the filter screen is provided with a collection tank connected to the inlet end of the inlet pipe.

[0008] The biological filtration zone is located at one end of the main body of the breeding tank and includes a biological filtration tank, a second water pump and an outlet pipe. The biological filtration tank is connected to the outlet of the first water pump through a guide pipe, and a nitrifying bacteria dosing device is provided at the top of the biological filtration tank.

[0009] As a preferred technical solution of this utility model, a protective cage is provided inside the breeding tank. The protective cage is a hollow mesh structure. The protective cage completely covers the water inlet pipe input end and extends to the bottom of the breeding tank. The mesh diameter of the protective cage is smaller than the width of the fish fry.

[0010] As a preferred technical solution of this utility model, the nitrifying bacteria tank includes a storage tank and a quantitative dosing valve. The storage tank maintains a constant temperature environment of 25-30℃. A liquid level sensor is installed inside the biological filter tank. The liquid level sensor and the quantitative dosing valve form a linkage control loop.

[0011] As a preferred technical solution of this utility model, the inner wall of the breeding tank is equipped with an ultraviolet lamp strip, the surface of the ultraviolet lamp strip is provided with waterproof glass, and the irradiation intensity of the ultraviolet germicidal lamp strip is adjustable and the maximum irradiation time per session does not exceed 30 minutes.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model is a fish fry rearing box that integrates physical filtration, biological purification, oxygen supply, and disinfection modules to achieve fully automated management of the aquaculture water: the physical filtration zone adopts an inclined dirt collection structure and automatic interception design, which significantly improves the efficiency of solid-liquid separation; the biological filtration zone continuously degrades harmful substances through the automatic addition of nitrifying bacteria and the synergistic effect of combined filter media; the oxygen supply and disinfection modules operate in synergy to ensure dissolved oxygen safety while avoiding excessive disinfection that could damage beneficial bacteria. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0017] In the diagram: 1. Main body of the breeding box; 2. Small oxygenator; 3. Oxygen supply pipe; 4. Protective cage; 5. Water inlet pipe; 6. Filter screen; 7. Collection trough; 8. First water pump; 9. Biological filter tank; 10. Nitrifying bacteria tank; 11. Second water pump; 12. Water outlet pipe; 13. Ultraviolet lamp strip. Detailed Implementation

[0018] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0019] In the attached diagram, all identical reference numerals refer to the same components.

[0020] like Figure 1-2As shown, this utility model provides a fish fry rearing box. The main body 1 of the rearing box has a rectangular structure with an open top for easy operation. The bottom of the rearing tank is tilted to one side at an angle of 5° to facilitate water flow concentration and sedimentation of impurities. A small aerator 2 is embedded in the outer wall of one end of the rearing box 1. The oxygen supply pipe 3 extends to the bottom of the rearing tank and releases oxygen through a microporous aeration disc. The surface of the aeration disc is evenly distributed with 0.5mm air holes, and the air hole density is 200 holes / dm².

[0021] The physical filtration zone is located at the lowest point of the sloping structure at the bottom of the aquaculture tank, and consists of an inlet pipe 5, a first water pump 8, and a filter screen 6.

[0022] The inlet pipe 5 connects to the drain outlet at the bottom of the aquaculture tank via a flange at its input end, and to the inlet of the first water pump 8 via a 90° elbow at its output end. A brush-type flow damper is embedded in the pipe wall to reduce water flow impact. The filter screen 6 is made of 304 stainless steel with a 1.5mm aperture, and its frame is secured to the collection tank 7 with a rubber sealing strip. The plane of the filter screen 6 forms a 3° angle with the horizontal plane, allowing intercepted suspended matter to automatically roll into the collection tank 7. The collection tank 7 is a 0.6L transparent acrylic tank, fixed to the side wall of the aquaculture tank via a magnetic quick-release structure. Maximum capacity markings are marked on the tank wall for easy visual management.

[0023] The biological filtration zone is located inside the equipment compartment and consists of a biological filtration tank 9, a second water pump 11, and an outlet pipe 12.

[0024] The biological filter tank 9 adopts a cubic structure, and the storage tank is a 500mL brown glass bottle. It is equipped with a digital temperature controller to maintain the internal temperature of 28℃±1℃. The quantitative dosing valve is driven by a stepper motor, with a minimum single dosing amount of 0.2mL. The dosing frequency is controlled by the liquid level sensor signal.

[0025] The output port of the first water pump 8 is connected to the bottom of the biological filter tank 9 through a transparent hose, and the second water pump 11 outputs water from the biological filter tank 9 to the inside of the aquaculture tank through a water pipe.

[0026] LED UV light strips (13) are bonded to the inner wall of the aquaculture tank with waterproof adhesive. The surface of the light strips is covered with 5mm thick tempered glass, with each LED having a power of 2W and a wavelength of 265nm. The control panel includes a disinfection time selection button and an emergency stop button to prevent over-disinfection.

[0027] The inner wall of the breeding tank is secured with a perforated protective cage 4 by nylon cable ties. The protective cage 4 is a cylindrical 316L stainless steel mesh cover with a mesh diameter of 4mm, which is 6mm smaller than the body width of the target fish fry. It completely covers the inlet end of the water inlet pipe 5 and extends to the bottom of the tank by 10mm, effectively preventing the fish fry from accidentally touching the filtration system.

[0028] Workflow: After the system starts, the first water pump 8 draws the aquaculture water to the physical filtration zone. After the filter screen 6 intercepts large particles of impurities, the water flows into the biological filtration tank 9 for nitrification. The automatically added nitrifying bacteria convert harmful substances into harmless substances. The purified water is returned to the aquaculture tank through the water distributor. At the same time, the oxygenator continuously generates microbubbles to increase dissolved oxygen. The ultraviolet light strip 13 disinfects and kills pathogens regularly. The intelligent control system monitors the liquid level and temperature in real time. The protective cage 4 prevents fish fry from accidentally touching the filtration system. During maintenance, only the collection tank 7 needs to be cleaned and the filter media needs to be replenished regularly to maintain the stable operation of the system.

[0029] This utility model is a fish fry rearing box that integrates physical filtration, biological purification, oxygen supply, and disinfection modules to achieve fully automated management of the aquaculture water: the physical filtration zone adopts an inclined dirt collection structure and automatic interception design, which significantly improves the efficiency of solid-liquid separation; the biological filtration zone continuously degrades harmful substances through the automatic addition of nitrifying bacteria and the synergistic effect of combined filter media; the oxygen supply and disinfection modules operate in synergy to ensure dissolved oxygen safety while avoiding excessive disinfection that could damage beneficial bacteria.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fish fry rearing box, comprising a rearing box body (1), wherein a rearing trough is provided inside the rearing box body (1), and a small oxygenator (2) is installed at one end of the rearing box body (1), wherein the small oxygenator (2) is embedded in the surface of the rearing box body (1) and its top end is connected to an oxygen supply pipe (3), characterized in that, The main body (1) of the breeding tank also includes: a physical filtration zone, which is set at the bottom of the breeding tank and includes an inlet pipe (5), a first water pump (8) and a filter screen (6). The inlet end of the inlet pipe (5) is connected to the bottom of the breeding tank and its outlet end is connected to the inlet of the first water pump (8). One end of the filter screen (6) is provided with a collection tank (7) connected to the inlet end of the inlet pipe (5); a biological filtration zone, which is set at one end of the main body (1) of the breeding tank and includes a biological filtration tank (9), a second water pump (11) and an outlet pipe (12). The biological filtration tank (9) is connected to the outlet of the first water pump (8) through a guide pipe. The top of the biological filtration tank (9) is provided with a nitrifying bacteria tank (10); and an ultraviolet lamp strip (13) is installed on the inner wall of the breeding tank.

2. The fish fry rearing box according to claim 1, characterized in that, The breeding tank is equipped with a protective cage (4), which is a hollow mesh structure. The protective cage (4) completely covers the input end of the water inlet pipe (5) and extends to the bottom of the breeding tank. The mesh diameter of the protective cage (4) is smaller than the width of the fish fry.

3. The fish fry rearing box according to claim 1, characterized in that, The nitrifying bacteria tank (10) includes a storage tank and a quantitative dosing valve. The storage tank maintains a constant temperature environment of 25-30°C. The biological filter tank (9) is equipped with a liquid level sensor. The liquid level sensor and the quantitative dosing valve form a linkage control loop.

4. A fish fry rearing box according to claim 1, characterized in that, The surface of the ultraviolet light strip (13) is provided with waterproof glass, and the irradiation intensity of the ultraviolet light strip (13) is adjustable and the maximum irradiation time per session does not exceed 30 minutes.

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