A biological denitrification device for aquaculture

Abstract

This utility model belongs to the field of aquaculture technology, specifically a biological denitrification device for aquaculture, including a first reaction chamber; a placement groove is opened at the top of the first reaction chamber; a second reaction chamber is slidably connected in the placement groove; a water inlet pipe is fixedly connected to the middle of the second reaction chamber; the water inlet pipe is located near the top of the second reaction chamber; a cover is detachably connected to the top of the second reaction chamber; multiple through holes are opened at the bottom of the second reaction chamber; the through holes are evenly distributed; a mesh plate is fixedly connected inside the first reaction chamber; through the above structure, the aquaculture water can be effectively denitrified, and the biological denitrification and adsorption work together to effectively improve the denitrification efficiency and enhance the denitrification effect. The first and second reaction chambers are detachable, and the second reaction chamber is also detachable from the cover, which facilitates the cleaning of the inside of the device by the staff.

Description

Technical Field

[0001] This utility model belongs to the field of aquaculture technology, specifically a biological denitrification device for aquaculture. Background Technology

[0002] With the continuous development of my country's economy and the steady improvement of people's living standards, consumers' demand for aquatic products has shown a significant trend of total growth, quality upgrading, and diversification of varieties. This change has not only promoted the rapid expansion of the aquaculture industry, but also put forward higher requirements for the industry's development model, technological innovation, and supply chain system.

[0003] In aquaculture, the application of biological denitrification devices is closely related to the nitrogen cycle characteristics, water quality stability requirements, and aquaculture efficiency. By solving nitrogen pollution problems, biological denitrification devices ensure the survival environment of farmed organisms, reduce the risk of disease and mortality, and reduce water consumption and environmental pollution. It is one of the key technologies for the sustainable development of modern aquaculture.

[0004] Existing biological denitrification devices for aquaculture involve introducing water into the device, where it reacts with biological packing material to remove nitrogen. This method has low efficiency and poor denitrification effect, and it is also inconvenient to clean the inside of the device.

[0005] Therefore, this utility model provides a biological denitrification device for aquaculture. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A biological denitrification device for aquaculture, comprising a first reaction chamber; a placement groove is provided on the top of the first reaction chamber; a second reaction chamber is slidably connected within the placement groove; a water inlet pipe is fixedly connected to the middle of the second reaction chamber; the water inlet pipe is positioned near the top of the second reaction chamber; a cover is detachably connected to the top of the second reaction chamber; multiple through holes are provided at the bottom of the second reaction chamber; the through holes are evenly distributed; a mesh plate is fixedly connected inside the first reaction chamber; the mesh plate is positioned near the bottom of the first reaction chamber; a flow guide chamber is fixedly connected to the bottom of the first reaction chamber; the flow guide chamber is frustoconical; a drain pipe is fixedly connected to the bottom of the flow guide chamber; Through the above structure, the aquaculture water can be effectively denitrified, and the synergistic effect of biological denitrification and adsorption effectively improves the denitrification efficiency.

[0008] Preferably, a motor is fixedly connected to the top of the chamber cover; a bearing seat is fixedly connected to the bottom of the chamber cover; a rotating shaft is rotatably connected inside the bearing seat, and the rotating shaft is connected to the output end of the motor; multiple stirring blades are fixedly connected to the middle of the rotating shaft; the stirring blades are distributed in a linear array; a limiting seat is slidably connected to the middle of the stirring blades; the limiting seat is fixed inside the second reaction chamber; through the above structure, the packing material can be effectively promoted to fully contact with water, so that pollutants such as nitrogen and phosphorus in the water can fully contact the microbial film on the surface of the packing material.

[0009] Preferably, a first flange is fixedly connected to the middle of the second reaction chamber, and the first flange is located near the bottom of the second reaction chamber; a second flange is fixedly connected to the middle of the first reaction chamber; the second flange is located at a position corresponding to the first flange; a bolt is slidably connected to the top of the first flange, and the bolt passes through the second flange; a nut is threadedly connected to the middle of the bolt; the nut contacts the bottom of the second flange; through the above structure, the first reaction chamber and the second reaction chamber can be effectively fixed together, making their connection tighter.

[0010] Preferably, a fixed disk is fixedly connected to the middle of the rotating shaft; the fixed disk is located near the limiting seat; multiple brushes are fixedly connected to the middle of the fixed disk; the brushes are distributed in a circumferential array; the brushes are inside the second reaction chamber; through the above structure, the obstruction of the through hole by the biological packing can be effectively reduced, allowing water to enter the first reaction chamber more smoothly from the through hole.

[0011] Preferably, a feed inlet is provided in the middle of the first reaction chamber; a chamber door is hinged to the middle of the first reaction chamber; the chamber door is located at a position corresponding to the feed inlet; and a transparent glass is installed on the chamber door; the above structure makes it more convenient to add and remove activated carbon, effectively improving the convenience of the device.

[0012] Preferably, a support is fixedly connected to the middle of the first reaction chamber; the support is located near the bottom of the first reaction chamber; a rubber pad is adhered to the bottom of the support; through the above structure, the support can effectively support the device and maintain the stability of the device structure.

[0013] Preferably, a feed pipe is fixedly connected to the top of the silo cover; the top of the feed pipe is funnel-shaped; the above structure facilitates the addition of packing material to the second reaction chamber by the staff, reducing the need to open the silo cover for feeding.

[0014] Preferably, a sealing gasket is bonded to the bottom of the second reaction chamber; the sealing gasket is made of rubber; through the above structure, the sealing gasket can fit tightly with the placement groove after being compressed, effectively reducing the leakage of water from the gap between the first reaction chamber and the second reaction chamber.

[0015] The beneficial effects of this utility model are as follows: 1. The biological denitrification device for aquaculture described in this utility model involves adding activated carbon to a first reaction chamber and biological packing material to a second reaction chamber. Water enters the second reaction chamber through an inlet pipe and reacts with the biological packing material to remove nitrogen. The reacted water flows into the interior of the first reaction chamber through a through-hole. The activated carbon inside the first reaction chamber adsorbs the water, further removing organic nitrogen compounds. The adsorbed water flows through a mesh plate into a guide chamber and is then discharged through a drain pipe. This structure effectively denitrifies aquaculture water. The synergistic effect of biological denitrification and adsorption effectively improves the denitrification efficiency and enhances the denitrification effect.

[0016] 2. The biological denitrification device for aquaculture described in this utility model, by starting the motor, drives the rotating shaft to rotate inside the bearing seat and the limiting seat. The rotating shaft drives the stirring blade to rotate at the same time. The structure of the stirring blade stirring the packing can effectively promote full contact between the packing and the water, so that pollutants such as nitrogen and phosphorus in the water can fully contact the microbial film on the surface of the packing, thereby accelerating the biodegradation efficiency. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the second reaction chamber in this utility model; Figure 3 This is a structural schematic diagram of the central storage door of this utility model; Figure 4 This is a schematic diagram of the flow guide chamber in this utility model; Figure 5 This is a schematic diagram of the nut structure in this utility model; Figure 6 This is a schematic diagram of the structure of the rotating shaft in this utility model.

[0019] In the diagram: 1. First reaction chamber; 11. Placement tank; 12. Second reaction chamber; 13. Water inlet pipe; 14. Chamber cover; 15. Through hole; 16. Mesh plate; 17. Flow guide chamber; 18. Drain pipe; 2. Motor; 21. Bearing seat; 22. Rotating shaft; 23. Stirring blade; 24. Limiting seat; 3. First flange; 31. Second flange; 32. Bolt; 33. Nut; 4. Fixing plate; 41. Brush; 5. Feed inlet; 51. Chamber door; 6. Support; 61. Rubber pad; 7. Feed pipe; 8. Sealing gasket. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Specific implementation examples are given below.

[0022] like Figures 1 to 5As shown in the embodiment of this utility model, a biological denitrification device for aquaculture includes a first reaction chamber 1; a placement groove 11 is provided on the top of the first reaction chamber 1; a second reaction chamber 12 is slidably connected in the placement groove 11; an inlet pipe 13 is fixedly connected to the middle of the second reaction chamber 12; the inlet pipe 13 is located near the top of the second reaction chamber 12; a cover 14 is detachably connected to the top of the second reaction chamber 12; multiple through holes 15 are provided at the bottom of the second reaction chamber 12; the through holes 15 are evenly distributed; a mesh plate 16 is fixedly connected inside the first reaction chamber 1; the mesh plate 16 is located near the bottom of the first reaction chamber 1; a flow guide chamber 17 is fixedly connected to the bottom of the first reaction chamber 1; the flow guide chamber 17 is frustoconical; a drain pipe 18 is fixedly connected to the bottom of the flow guide chamber 17; during operation, activated carbon is added to the first reaction chamber 1, the second reaction chamber 12 is installed in the placement groove 11, and activated carbon is added to the second reaction chamber 1. Biological packing material is added to the reaction chamber 12, and the cover 14 is installed on top of the second reaction chamber 12. The water to be denitrified enters the second reaction chamber 12 through the inlet pipe 13 and reacts with the biological packing material to denitrify. The reacted water flows into the interior of the first reaction chamber 1 through the through hole 15. The activated carbon inside the first reaction chamber 1 adsorbs the water to further remove organic nitrogen compounds. The adsorbed water flows into the guide chamber 17 through the mesh plate 16 and is discharged through the drain pipe 18. The first reaction chamber 1 and the second reaction chamber 12 are detachable. Through the above structure, the aquaculture water can be effectively denitrified. The biological denitrification and adsorption work together to effectively improve the denitrification efficiency and enhance the denitrification effect. The first reaction chamber 1 and the second reaction chamber 12 are detachable, and the second reaction chamber 12 and the cover 14 are also detachable, which facilitates the cleaning of the inside of the device by the staff.

[0023] like Figure 1 , Figure 2 and Figure 5As shown, a motor 2 is fixedly connected to the top of the cover 14; a bearing seat 21 is fixedly connected to the bottom of the cover 14; a rotating shaft 22 is rotatably connected inside the bearing seat 21, and the rotating shaft 22 is connected to the output end of the motor 2; multiple stirring blades 23 are fixedly connected to the middle of the rotating shaft 22; the stirring blades 23 are distributed in a linear array; a limiting seat 24 is slidably connected to the middle of the stirring blades 23; the limiting seat 24 is fixedly connected inside the second reaction chamber 12; during operation, the cover 14 is connected to the second reaction chamber 12, the rotating shaft 22 is inserted into the limiting seat 24, the motor 2 is started, and the motor 2 drives the rotating shaft 22 to rotate. The shaft 22 rotates inside the bearing housing 21 and the limiting seat 24. While the shaft 22 rotates, it drives the stirring blade 23 to rotate. The rotating stirring blade 23 stirs the packing. Through the above structure, the packing can be effectively brought into full contact with water, so that pollutants such as nitrogen and phosphorus in the water can come into full contact with the microbial film on the surface of the packing, thereby accelerating the biodegradation efficiency. During the reaction, a boundary layer will form on the surface of the packing, affecting the diffusion of new pollutants. Stirring can destroy the boundary layer, accelerate the diffusion of pollutants to the surface of the packing, and reduce the situation where the reaction stops due to local concentration imbalance.

[0024] like Figure 1 and Figure 5 As shown, a first flange 3 is fixedly connected to the middle of the second reaction chamber 12, and the first flange 3 is located near the bottom of the second reaction chamber 12; a second flange 31 is fixedly connected to the middle of the first reaction chamber 1; the second flange 31 is located at a position corresponding to the first flange 3; a bolt 32 is slidably connected to the top of the first flange 3, and the bolt 32 passes through the second flange 31; a nut 33 is threadedly connected to the middle of the bolt 32; the nut 33 contacts the bottom of the second flange 31; during operation, the device may vibrate, causing the connection between the first reaction chamber 1 and the second reaction chamber 12 to loosen and leak water. By setting the second flange 31 and the first flange 3 in the middle of the first reaction chamber 1 and the second reaction chamber 12, and then using bolts 32 and nuts 33 to fix the second flange 31 and the first flange 3, the first reaction chamber 1 and the second reaction chamber 12 can be effectively fixed together, making the connection tighter, thereby reducing water leakage and improving the stability of the device structure.

[0025] like Figure 2As shown, a fixed disk 4 is fixedly connected to the middle of the rotating shaft 22; the fixed disk 4 is located near the limiting seat 24; multiple brushes 41 are fixedly connected to the middle of the fixed disk 4; the brushes 41 are distributed in a circumferential array; the brushes 41 are inside the second reaction chamber 12; during operation, biological filler is added to the second reaction chamber 12. The filler is larger than the cross-sectional area of ​​the through hole 15, which may block the through hole 15. The fixed disk 4 and brushes 41 are set in the middle of the rotating shaft 22. When the rotating shaft 22 rotates, it drives the fixed disk 4 and brushes 41 to rotate. When the brushes 41 rotate, they clean the bottom of the second reaction chamber 12. Through the above structure, the obstruction of the through hole 15 by the biological filler can be effectively reduced, so that water can enter the first reaction chamber 1 more smoothly from the through hole 15.

[0026] like Figure 3 and Figure 4 As shown, a feed inlet 5 is provided in the middle of the first reaction chamber 1; a chamber door 51 is hinged to the middle of the first reaction chamber 1; the chamber door 51 is located at a position corresponding to the feed inlet 5; a transparent glass is installed on the chamber door 51; during operation, the chamber door 51 is opened, and activated carbon can be added into the first reaction chamber 1 through the feed inlet 5. The transparent glass on the chamber door 51 allows observation of the working conditions inside the first reaction chamber 1. Through the above structure, the addition and removal of activated carbon becomes more convenient, effectively improving the convenience of the device. The installation of the transparent glass allows the operator to directly observe the working conditions inside the first reaction chamber 1.

[0027] like Figure 1 As shown, a support 6 is fixedly connected to the middle of the first reaction chamber 1; the support 6 is located near the bottom of the first reaction chamber 1; a rubber pad 61 is adhered to the bottom of the support 6; during operation, the device may vibrate. The rubber pad 61 is located in the middle of the first reaction chamber 1. Through the above structure, the support 6 can effectively support the device and maintain the stability of the device structure, and the rubber pad 61 can effectively buffer the device, dispersing the impact force caused by vibration to a larger area and reducing the possibility of damage to the bottom of the device due to excessive local stress.

[0028] like Figure 1 , Figure 2 and Figure 5 As shown, a feed pipe 7 is fixedly connected to the top of the bin cover 14; the top of the feed pipe 7 is funnel-shaped; during operation, the feed pipe 7 on the bin cover 14 allows biological filler to be added into the second reaction chamber 12 from the position of the feed pipe 7. The funnel-shaped top of the feed pipe 7 facilitates the addition of filler to the second reaction chamber 12 by the staff, reducing the need to open the bin cover 14 for feeding. The funnel shape of the feed pipe 7 expands the feeding area and reduces the difficulty of feeding.

[0029] like Figure 2 As shown, a sealing gasket 8 is bonded to the bottom of the second reaction chamber 12; the sealing gasket 8 is made of rubber; during operation, the sealing gasket 8 is installed at the bottom of the second reaction chamber 12. The sealing gasket 8 is made of rubber. Through the above structure, the sealing gasket 8 can fit tightly with the placement groove 11 after being pressed, which effectively reduces the leakage of water from the gap between the first reaction chamber 1 and the second reaction chamber 12.

[0030] During operation, activated carbon is added to the first reaction chamber 1, and the second reaction chamber 12 is installed in the placement tank 11. Biological packing material is added to the second reaction chamber 12, and the cover 14 is installed on top of the second reaction chamber 12. The water to be denitrified enters the second reaction chamber 12 through the inlet pipe 13 and reacts with the biological packing material to remove nitrogen. The reacted water flows into the interior of the first reaction chamber 1 through the through hole 15. The activated carbon inside the first reaction chamber 1 adsorbs the water, further removing organic nitrogen compounds. The adsorbed water flows through the mesh plate 16 into the guide chamber 17, and then is discharged through the drain pipe 18. The first reaction chamber 1 and the second reaction chamber 12 are detachable. Through the above structure, the aquaculture water can be effectively denitrified, with biological denitrification and adsorption working synergistically. This design effectively improves denitrification efficiency and enhances the denitrification effect. The first reaction chamber 1 and the second reaction chamber 12 are detachable, as is the connection between the second reaction chamber 12 and the cover 14, facilitating cleaning of the device's interior. Connecting the cover 14 to the second reaction chamber 12 allows the rotating shaft 22 to be inserted into the limiting seat 24. Starting the motor 2 drives the rotating shaft 22 to rotate within the bearing seat 21 and the limiting seat 24. Simultaneously, the rotating shaft 22 drives the stirring blades 23 to rotate, which in turn stirs the packing material. This structure effectively promotes full contact between the packing material and water, ensuring that pollutants such as nitrogen and phosphorus in the water come into full contact with the microbial film on the packing material surface, thereby accelerating biodegradation efficiency. During the reaction, a boundary layer forms on the packing surface, affecting the diffusion of new pollutants. Stirring can disrupt this boundary layer, accelerating the diffusion of pollutants to the packing surface and reducing the likelihood of reaction stagnation due to localized concentration imbalances. The device may vibrate, potentially causing loosening of the connection between the first reaction chamber 1 and the second reaction chamber 12, leading to leakage. A second flange 31 and a first flange 3 are installed in the middle of the first reaction chamber 1 and the second reaction chamber 12, and then bolts 32 and nuts 33 are used to secure them. This structure effectively fixes the first reaction chamber 1 and the second reaction chamber 12 together, making the connection tighter, thereby reducing leakage and improving the stability of the device structure. The second reaction... Biological packing material is added inside chamber 12. This packing material has a larger cross-sectional area than the through-hole 15, which may obstruct the through-hole 15. A fixed disk 4 and a brush 41 are installed in the middle of the rotating shaft 22. When the rotating shaft 22 rotates, it drives the fixed disk 4 and the brush 41 to rotate as well. The brush 41 cleans the bottom of the second reaction chamber 12 as it rotates. This structure effectively reduces the obstruction of the through-hole 15 by the biological packing material, allowing water to enter the first reaction chamber 1 more smoothly through the through-hole 15. Activated carbon can be added to the first reaction chamber 1 through the feed inlet 5 by opening the chamber door 51. A transparent glass panel is installed on the chamber door 51, allowing observation of the internal workings of the first reaction chamber 1. This structure makes the addition and removal of activated carbon more convenient.To effectively improve the convenience of the device, the transparent glass allows staff to directly observe the operation inside the first reaction chamber 1. Since the device may vibrate, a rubber pad 61 is installed in the middle of the first reaction chamber 1. Through this structure, the support 6 can effectively support the device, maintaining its structural stability. The rubber pad 61 effectively buffers the device, distributing the impact of vibration over a larger area, reducing the risk of damage to the bottom of the device due to excessive localized stress. A feed pipe 7 is installed on the chamber cover 14, allowing feed to enter the second reaction chamber. Biological packing material is added inside chamber 12. The top of the feed pipe 7 is funnel-shaped. This structure facilitates the addition of packing material to the second reaction chamber 12 by personnel, reducing the need to open the chamber cover 14 for feeding. The funnel shape of the feed pipe 7 increases the feeding area and reduces the difficulty of feeding. A sealing gasket 8 made of rubber is installed at the bottom of the second reaction chamber 12. Through the above structure, the sealing gasket 8 can fit tightly against the placement groove 11 under pressure, effectively reducing water leakage from the gap between the first reaction chamber 1 and the second reaction chamber 12.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A biological nitrogen removal device for aquaculture, characterized in that: The system includes a first reaction chamber (1); a placement slot (11) is provided on the top of the first reaction chamber (1); a second reaction chamber (12) is slidably connected in the placement slot (11); a water inlet pipe (13) is fixedly connected to the middle of the second reaction chamber (12); the water inlet pipe (13) is located near the top of the second reaction chamber (12); a cover (14) is detachably connected to the top of the second reaction chamber (12); multiple through holes (15) are provided at the bottom of the second reaction chamber (12); the through holes (15) are evenly distributed; a mesh plate (16) is fixedly connected inside the first reaction chamber (1); the mesh plate (16) is located near the bottom of the first reaction chamber (1); a flow guide chamber (17) is fixedly connected to the bottom of the first reaction chamber (1); the flow guide chamber (17) is frustoconical; and a drain pipe (18) is fixedly connected to the bottom of the flow guide chamber (17).

2. The biological denitrification device for aquaculture according to claim 1, characterized in that: A motor (2) is fixedly connected to the top of the cover (14); a bearing seat (21) is fixedly connected to the bottom of the cover (14); a rotating shaft (22) is rotatably connected inside the bearing seat (21), and the rotating shaft (22) is connected to the output end of the motor (2); a plurality of stirring blades (23) are fixedly connected to the middle of the rotating shaft (22); the stirring blades (23) are distributed in a linear array; a limiting seat (24) is slidably connected to the middle of the stirring blades (23); the limiting seat (24) is fixedly connected to the inside of the second reaction chamber (12).

3. A biological denitrification device for aquaculture according to claim 2, characterized in that: A first flange (3) is fixedly connected to the middle of the second reaction chamber (12), and the first flange (3) is located near the bottom of the second reaction chamber (12); a second flange (31) is fixedly connected to the middle of the first reaction chamber (1); the second flange (31) is located at a position corresponding to the first flange (3); a bolt (32) is slidably connected to the top of the first flange (3), and the bolt (32) passes through the second flange (31); a nut (33) is threadedly connected to the middle of the bolt (32); the nut (33) contacts the bottom of the second flange (31).

4. A biological denitrification device for aquaculture according to claim 2, characterized in that: A fixed disk (4) is fixedly connected to the middle of the rotating shaft (22); the fixed disk (4) is located near the limiting seat (24); a plurality of brushes (41) are fixedly connected to the middle of the fixed disk (4); the brushes (41) are distributed in a circumferential array; the brushes (41) are inside the second reaction chamber (12).

5. A biological denitrification device for aquaculture according to claim 1, characterized in that: The first reaction chamber (1) has a feed inlet (5) in the middle; a chamber door (51) is hinged in the middle of the first reaction chamber (1); the chamber door (51) is located at a position corresponding to the feed inlet (5); and transparent glass is installed on the chamber door (51).

6. A biological denitrification device for aquaculture according to claim 1, characterized in that: A bracket (6) is fixedly connected to the middle of the first reaction chamber (1); the bracket (6) is located near the bottom of the first reaction chamber (1); a rubber pad (61) is glued to the bottom of the bracket (6).

7. A biological denitrification device for aquaculture according to claim 1, characterized in that: The top of the bin cover (14) is fixedly connected to a feed pipe (7); the top of the feed pipe (7) is trumpet-shaped.

8. A biological denitrification device for aquaculture according to claim 1, characterized in that: The bottom of the second reaction chamber (12) is bonded with a sealing gasket (8); the sealing gasket (8) is made of rubber.

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