A three-dimensional filter device for recirculating water culture

Abstract

The utility model relates to circulating water aquaculture filtration technical field discloses a kind of three-dimensional filter devices of circulating water aquaculture, including coarse filter box, the coarse filter box inside is provided with coarse filter screen, the coarse filter box side wall is provided with fine filter box, the fine filter box inside is provided with fine filter screen, the fine filter box side wall is provided with biological filter box, the biological filter box inside is provided with filler plate, the biological filter box side wall is provided with clean water tank, the coarse filter box side wall is provided with cleaning assembly, the biological filter box inside is provided with mounting assembly;The cleaning assembly includes cleaning plate, and the cleaning plate side wall is attached to the coarse filter screen side wall.In the utility model, the chain sprocket and chain transmission driven by motor are used to move the cleaning plate up and down along the coarse filter screen to scrape off impurities, so as to achieve the effect of automatic cleaning of filter screen and prevention of blockage. The above structure improves the automation maintenance efficiency of the filter device and reduces the labor operation cost.

Description

Technical Field

[0001] This utility model relates to the field of recirculating aquaculture filtration technology, and in particular to a three-dimensional filtration device for recirculating aquaculture. Background Technology

[0002] In recirculating aquaculture systems, continuous water purification is crucial for ensuring the healthy growth of cultured organisms. As a core component of the recirculating aquaculture system, the filtration efficiency and ease of maintenance of the three-dimensional filtration system directly impact the operating costs and stability of the aquaculture system. With the development of high-density aquaculture technology, the concentration of suspended solids, uneaten feed, and biological metabolites in the water has increased significantly, placing higher demands on the automation level and long-term operational capability of filtration devices.

[0003] Existing recirculating aquaculture filtration systems typically employ a multi-layered filter box design connected in series, achieving water purification through multiple stages of physical and biological filtration. The coarse filter box, as a pretreatment unit, usually uses a fixed filter screen to intercept large particles. Its technical principle is to utilize the sieving effect of the filter screen's pore size to separate suspended solids from the water. The mechanical structure of this type of device is mostly fixedly installed; the filter screen is connected to the filter box body by bolts or welding. The biological filter media is also often installed in a fixed manner within the filter box, relying on manual periodic cleaning or replacement.

[0004] However, in existing technologies, the filter screens of coarse filter boxes are easily clogged by uneaten feed, feces, and other impurities during use. Fixed filter screens require frequent manual disassembly and cleaning, which not only increases maintenance costs but also disrupts water circulation during downtime for cleaning, affecting water quality stability. This reliance on manual maintenance is insufficient to meet the demands of high-density recirculating aquaculture systems for automated and efficient filtration. Therefore, a three-dimensional filtration device for recirculating aquaculture systems is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a three-dimensional filtration device for recirculating aquaculture, aiming to improve the problem of the need for frequent manual disassembly and cleaning of the coarse filter screen in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A three-dimensional filtration device for recirculating aquaculture includes a coarse filter box with a coarse filter screen inside, a fine filter box with a fine filter screen inside, a biological filter box with a packing plate inside, a clear water tank inside, a cleaning component inside, and an installation component inside.

[0008] Furthermore, the cleaning assembly includes a cleaning plate, the sidewall of which is attached to the sidewall of the coarse filter screen. A fixing frame is fixedly connected to the upper surface of the coarse filter box, and a motor is fixedly connected to the upper surface of the fixing frame. A sprocket is fixedly connected to the output end of the motor. A chain is arranged between the sprockets, and a connecting block is fixedly connected to the sidewall of the chain. The sidewall of the connecting block is fixedly connected to the sidewall of the cleaning plate.

[0009] Furthermore, the installation assembly includes an installation sleeve, the sidewall of which is slidably connected to the inside of the biofiltration box, and the sidewall of the packing plate is slidably connected to the inside of the installation sleeve.

[0010] Furthermore, an inlet pipe is fixedly connected to the side wall of the coarse filter box, a drain pipe is fixedly connected to the side wall of the coarse filter box, and a water pump is fixedly connected to the side wall of the clean water tank.

[0011] Furthermore, a fixing block is fixedly connected to the side wall of the mounting sleeve, and the side wall of the fixing block is slidably connected inside the biological filter box.

[0012] Furthermore, a mounting base is fixedly connected inside the biological filter box, and a locking block is slidably connected inside the biological filter box, with the side wall of the locking block slidably connected inside the fixed block.

[0013] Furthermore, a spring is provided inside the biological filter box, with one end of the spring fixedly connected to the side wall of the mounting base and the other end of the spring fixedly connected to the side wall of the card block.

[0014] Furthermore, a magnetic block one is fixedly connected inside the filler plate, and a magnetic block two is fixedly connected inside the mounting sleeve. The magnetic block two attracts the magnetic block one.

[0015] Furthermore, both the second magnetic block and one side wall of the magnetic block are fitted with stainless steel shells to prevent water corrosion.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, the motor drives the sprocket and chain transmission to make the cleaning plate move up and down along the coarse filter screen to scrape away impurities, thereby achieving the effect of automatically cleaning the filter screen and preventing clogging. This solves the problem that the existing coarse filter screen needs to be frequently disassembled and cleaned manually. The above structure improves the efficiency of automated maintenance of the filtration device and reduces manual operation costs.

[0018] 2. In this utility model, the magnetic attraction of magnetic block one and magnetic block two enables the packing plate and the mounting sleeve to be quickly positioned and installed. Combined with the locking structure of spring and locking block, the mounting sleeve is fixed, thereby achieving the effect of convenient disassembly and assembly of packing plate and stable fixation. This solves the problem of complex and time-consuming installation and disassembly of packing in existing biological filter boxes. The above structure improves the efficiency of packing replacement and the convenience of maintenance in biological filter boxes. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a three-dimensional filtration device for recirculating aquaculture proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the coarse filter box of a three-dimensional filtration device for recirculating aquaculture proposed in this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the biological filter box of a three-dimensional filtration device for recirculating aquaculture proposed in this utility model;

[0022] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 This is a schematic diagram of the internal structure of the biological filter box of a three-dimensional filtration device for recirculating aquaculture proposed in this utility model.

[0024] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0025] Legend:

[0026] 1. Coarse filter box; 2. Inlet pipe; 3. Drain pipe; 4. Fine filter box; 5. Biological filter box; 6. Clear water tank; 7. Water pump; 8. Coarse filter screen; 9. Packing plate; 10. Fixing frame; 11. Motor; 12. Sprocket; 13. Chain; 14. Cleaning plate; 15. Connecting block; 16. Mounting sleeve; 17. Fixing block; 18. Mounting base; 19. Spring; 20. Locking block; 21. Magnetic block one; 22. Magnetic block two; 23. Fine filter screen. Detailed Implementation

[0027] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figures 1-2 This utility model provides an embodiment of a three-dimensional filtration device for recirculating aquaculture, including a coarse filter box 1. The coarse filter box 1 is used to initially intercept large particulate impurities in the aquaculture wastewater, such as uneaten feed and feces, thereby reducing the load on subsequent filtration units. The coarse filter box 1 is equipped with a coarse filter screen 8, which is made of stainless steel and is used to intercept larger suspended particles. It has corrosion resistance and high strength, effectively extending its service life. A fine filter box 4 is installed on the side wall of the coarse filter box 1. The fine filter box 4 is used for secondary fine filtration of the water after coarse filtration, further removing smaller particulate impurities and improving water cleanliness. The fine filter box 4 is equipped with a fine filter screen 23, which has a finer mesh and is used to trap fine impurities that the coarse filter screen 8 failed to filter, achieving deep purification of the water. 4. A biological filter box 5 is installed on the side wall. The biological filter box 5 is used to degrade harmful substances such as ammonia nitrogen and nitrite in the water by microorganisms, so as to improve water quality and provide a healthy water environment for aquaculture organisms. The biological filter box 5 is equipped with a packing plate 9 inside. The packing plate 9 provides a carrier for microorganisms to attach and grow. The microbial community attached to it can decompose and transform pollutants in the water. A clear water tank 6 is installed on the side wall of the biological filter box 5. The clear water tank 6 is used to store purified water that meets the aquaculture requirements after multi-stage filtration and provides circulating water for the aquaculture pond. A cleaning component is installed on the side wall of the coarse filter box 1. The cleaning component is used to automatically remove impurities trapped on the surface of the coarse filter screen 8, avoiding frequent manual cleaning and improving the automation level of the filtration device. An installation component is installed inside the biological filter box 5. The installation component facilitates the disassembly and assembly of the packing plate 9.

[0029] The cleaning assembly includes a cleaning plate 14, whose sidewalls are attached to the sidewalls of the coarse filter screen 8 for directly scraping away impurities from the surface of the coarse filter screen 8. A mounting bracket 10 is fixedly connected to the upper surface of the coarse filter box 1, and a motor 11 is fixedly connected to the upper surface of the mounting bracket 10. A sprocket 12 is fixedly connected to the output end of the motor 11. The motor 11 provides power to drive the sprocket 12 to rotate. A chain 13 is arranged between the sprockets 12, and a connecting block 15 is fixedly connected to the sidewall of the chain 13. The sprockets 12 cooperate with the chain 13 to transmit motion, converting the rotational motion of the motor 11 into linear motion, thereby driving the cleaning plate 14 to move up and down along the coarse filter screen 8. The connecting block 15 is fixedly connected to the sidewall of the cleaning plate 14 to transmit the motion of the chain 13 to the cleaning plate 14. The coarse filter box 1 is fixedly connected to the side wall of the inlet pipe 2, which is used to introduce wastewater from the aquaculture pond into the coarse filter box 1 to achieve water flow. The coarse filter box 1 is fixedly connected to the side wall of the drain pipe 3, which is used to discharge the impurities and backwash wastewater deposited in the coarse filter box 1 to keep the inside of the box clean. The clear water tank 6 is fixedly connected to the side wall of the water pump 7, which is used to pump the purified water in the clear water tank 6 back to the aquaculture pond to form a circulating water system and ensure the continuous renewal of the aquaculture water. These components work together to form a complete and efficient circulating water filtration process from wastewater introduction, multi-stage filtration, impurity cleaning to purified water return, which achieves the effects of improving the water quality purification efficiency of circulating aquaculture, reducing manual maintenance costs, and ensuring the stable operation of the aquaculture system.

[0030] Reference Figures 3-6The installation assembly includes an installation sleeve 16, which provides an installation carrier for the packing plate 9 and guides its sliding, facilitating the installation and removal of the packing plate 9. The sidewall of the installation sleeve 16 is slidably connected inside the biofilter box 5, enabling its mobility within the biofilter box 5 for convenient maintenance. The sidewall of the packing plate 9 is slidably connected inside the installation sleeve 16, supporting the biological filter media and providing an attachment surface for microorganisms. Its sliding engagement with the installation sleeve 16 facilitates the positioning and installation of the packing plate 9. The sidewall of the installation sleeve 16 is fixedly connected... A fixing block 17 is provided, with its side wall slidably connected inside the biofilter box 5, allowing it to slide along a preset track within the biofilter box 5. This provides guidance for the installation and removal of the mounting sleeve 16. A mounting base 18 is fixedly connected inside the biofilter box 5, and a locking block 20 is slidably connected inside the biofilter box 5. The locking block 20 is inserted into the fixing block 17 to lock the mounting sleeve 16 and prevent it from loosening. The side wall of the locking block 20 is slidably connected inside the fixing block 17, and the fixing and removal of the mounting sleeve 16 are completed through engaging and disengaging actions. The filter box 5 is equipped with a spring 19. One end of the spring 19 is fixedly connected to the side wall of the mounting base 18, and the other end is fixedly connected to the side wall of the locking block 20. The spring 19 provides elastic force to the locking block 20, causing it to automatically lock into the fixing block 17, achieving the effect of fixing the mounting sleeve 16 without additional tools. A magnetic block 1 21 is fixedly connected inside the packing plate 9, and a magnetic block 22 is fixedly connected inside the mounting sleeve 16. The magnetic block 22 attracts the magnetic block 1 21, and the magnetic block 1 21 cooperates with the magnetic block 22 to exert magnetic force. The adsorption process achieves rapid positioning and automatic alignment of the packing plate 9 and the mounting sleeve 16, simplifying the installation process. Both magnetic block 22 and magnetic block 21 have stainless steel shells on their side walls to prevent water from corroding the magnetic blocks and to ensure the durability of the magnetic adsorption effect. These components, combined, form a convenient packing installation and disassembly mechanism from the rapid positioning and installation of the packing plate 9 to the automatic locking and fixing of the mounting sleeve 16. This improves the maintenance efficiency of the biological filter box 5, reduces maintenance time, and ensures the stable operation of the biological filter media.

[0031] Working principle: When using this equipment for filtration, aquaculture wastewater enters the coarse filter box 1 through the inlet pipe 2. The coarse filter screen 8 intercepts larger particles of impurities in the water, such as uneaten feed, feces, and fragments of aquatic plants. These impurities are trapped on the coarse filter screen 8. The purified wastewater enters the fine filter box 4 through the side wall channel. The drain pipe 3 at the bottom of the coarse filter box 1 is used to periodically discharge impurities deposited at the bottom of the box. After coarse filtration, the wastewater enters the fine filter box 4, where the fine filter screen 23 further filters out smaller suspended solids and impurities in the water, further reducing the turbidity of the water and achieving preliminary purification of the water quality. Afterward, the wastewater enters the biological filter box 5. After the wastewater enters the biological filter tank 5, the microorganisms attached to the packing plate 9 biodegrade harmful substances such as ammonia nitrogen and nitrite in the water, converting them into harmless substances, thus achieving deep purification of the water quality. The purified water finally flows into the clear water tank 6. The purified water in the clear water tank 6 is then pumped back to the aquaculture pond by the water pump 7, realizing the recycling of aquaculture water. When there are too many impurities trapped on the surface of the coarse filter screen 8, affecting the filtration effect, the motor 11 is started. The output end of the motor 11 drives the sprocket 12 to rotate. The sprocket 12 drives the connecting block 15 and the cleaning plate 14 to move left and right along the side wall of the coarse filter screen 8 through the chain 13. The cleaning plate 14 scrapes away impurities from the coarse filter screen 8 to prevent clogging and ensure the efficiency of coarse filtration. The cleaned impurities eventually settle at the bottom of the coarse filter box 1 and are discharged through the drain pipe 3. When installing the packing plate 9, align it with the mounting sleeve 16. Due to the mutual attraction between the magnetic block 22 and the magnetic block 21, the packing plate 9 will automatically adhere to the mounting sleeve 16, achieving quick positioning and installation. The mounting sleeve 16 is slidably connected to the inside of the biological filter box 5 through the fixing block 17 on the side wall to ensure stable installation of the mounting sleeve 16. Push the mounting sleeve 16 together with the packing plate 9 into the inside of the biological filter box 5. When the mounting sleeve 16 is aligned with the locking block 20 inside the biological filter box 5, the spring 19 pushes the locking block 20 into the fixing block 17, fixing the mounting sleeve 16 in the biological filter box 5 to prevent it from shifting under the impact of water flow. When it is necessary to replace or maintain the packing plate 9, simply pull the mounting sleeve 16 upward to overcome the elastic force of the spring 19, so that the locking block 20 can be disengaged from the fixing block 17, and the mounting sleeve 16 together with the packing plate 9 can be taken out from the biological filter box 5. The stainless steel shells fitted on the side walls of the magnetic block 22 and the magnetic block 11 can effectively prevent water corrosion, extend the service life of the magnetic components, and ensure the reliability of the mounting components.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A three-dimensional filtration device for recirculating aquaculture, comprising a coarse filter box (1), characterized in that: The coarse filter box (1) is equipped with a coarse filter screen (8) inside. The coarse filter box (1) is equipped with a fine filter box (4) on its side wall. The fine filter box (4) is equipped with a fine filter screen (23) inside. The fine filter box (4) is equipped with a biological filter box (5) on its side wall. The biological filter box (5) is equipped with a packing plate (9) inside. The biological filter box (5) is equipped with a clear water tank (6) on its side wall. The coarse filter box (1) is equipped with a cleaning component on its side wall. The biological filter box (5) is equipped with an installation component inside. The cleaning assembly includes a cleaning plate (14), the sidewall of which is attached to the sidewall of the coarse filter screen (8). A fixing frame (10) is fixedly connected to the upper surface of the coarse filter box (1). A motor (11) is fixedly connected to the upper surface of the fixing frame (10). A sprocket (12) is fixedly connected to the output end of the motor (11). A chain (13) is arranged between the sprockets (12). A connecting block (15) is fixedly connected to the sidewall of the chain (13). The sidewall of the connecting block (15) is fixedly connected to the sidewall of the cleaning plate (14).

2. The three-dimensional filtration device for recirculating aquaculture as described in claim 1, characterized in that: The installation assembly includes an installation sleeve (16), the sidewall of which is slidably connected to the inside of the biofilter box (5), and the sidewall of the packing plate (9) is slidably connected to the inside of the installation sleeve (16).

3. The three-dimensional filtration device for recirculating aquaculture as described in claim 1, characterized in that: The coarse filter box (1) is fixedly connected to the side wall of the water inlet pipe (2), the coarse filter box (1) is fixedly connected to the side wall of the sewage pipe (3), and the clear water tank (6) is fixedly connected to the side wall of the water pump (7).

4. The three-dimensional filtration device for recirculating aquaculture according to claim 2, characterized in that: The mounting sleeve (16) is fixedly connected to a fixing block (17) on its side wall, and the side wall of the fixing block (17) is slidably connected inside the biological filter box (5).

5. The three-dimensional filtration device for recirculating aquaculture according to claim 4, characterized in that: The biological filter box (5) is fixedly connected to an installation base (18), and a locking block (20) is slidably connected inside the biological filter box (5). The side wall of the locking block (20) is slidably connected inside the fixed block (17).

6. The three-dimensional filtration device for recirculating aquaculture according to claim 5, characterized in that: The biological filter box (5) is equipped with a spring (19) inside. One end of the spring (19) is fixedly connected to the side wall of the mounting base (18), and the other end of the spring (19) is fixedly connected to the side wall of the card block (20).

7. A three-dimensional filtration device for recirculating aquaculture according to claim 6, characterized in that: A magnetic block 1 (21) is fixedly connected inside the filler plate (9), and a magnetic block 2 (22) is fixedly connected inside the mounting sleeve (16). The magnetic block 2 (22) attracts the magnetic block 1 (21).

8. A three-dimensional filtration device for recirculating aquaculture according to claim 7, characterized in that: Both the second magnetic block (22) and the first magnetic block (21) are fitted with stainless steel shells on their sidewalls to prevent water corrosion.

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