Novel aquaculture water body filtering device

Abstract

The utility model relates to the technical field of filtering devices, in particular to a novel aquaculture water body filtering device which comprises a treatment box and a rotatable filtering mechanism arranged in the treatment box, the rotatable filtering mechanism comprises a rotary filtering barrel, a U-shaped frame arranged on the upper side of the treatment box, a cleaning and scraping mechanism which is connected with the sewage inlet pipe and the outer wall of the fixed column and is in sliding fit with the inner wall of the rotary filtering barrel, a booster pump which is arranged on the lower side of the treatment box and is spaced from the plugging mechanism, and a branch pipe communicated with the water outlet end of the booster pump; the inclined nozzle is communicated with one end of the outer wall of the branch pipe and acts on the inner wall of the rotary filtering barrel; according to the device, dirt and impurities adhered to the inner wall of the filter screen cylinder can be conveniently scraped, flushed and cleaned, and the filtering efficiency of the filter screen cylinder is improved; and the device can conveniently control plugging and opening of an opening in the lower end of the rotary filtering barrel, and the problems that in the filtering process of an existing device, secondary filtering treatment is needed when part of water is discharged, and a filtering net plate in a collecting box needs to be manually cleaned are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a novel aquaculture water body filtering device. Background Technique

[0002] Aquaculture refers to the production process in which aquatic products grow, develop and reproduce under artificial interference and are regularly harvested. In order to ensure the normal survival of aquatic products, it is necessary to filter the aquaculture water body to reduce the pollution of the water body by dirt and impurities in the water, which may cause the death of aquatic products.

[0003] Currently, the main method for filtering aquaculture water is to use a sludge pump to pump the water in the aquaculture pond and transport it into the filter mesh cylinder. The water is filtered under the action of the filter mesh cylinder, and the filtered water flows back into the aquaculture pond again.

[0004] The existing aquaculture water body filtering devices have the following problems:

[0005] 1. When cleaning the pollutant impurities attached to the inner wall of the filter mesh cylinder, it is cleaned by driving the filter mesh cylinder to rotate and flushing the filter mesh cylinder in the reverse direction. However, some pollutant impurities still adhere to the inner wall of the filter mesh cylinder, which is likely to affect the filtering efficiency of the filter mesh cylinder.

[0006] 2. When the filter mesh cylinder filters the incoming aquaculture water, some water will enter the lower collection box along with the filtered dirt and impurities, and secondary filtration treatment is required. During the secondary treatment process, the filter mesh plate is easily blocked, and manual cleaning of the secondary filter mesh plate is required. Content of the Utility Model

[0007] The purpose of the utility model is to provide a novel aquaculture water body filtering device, which is used to solve the problems that when filtering and treating aquaculture water at present, it is inconvenient to scrape, wash and clean the dirt and impurities adhered to the inner wall of the filter mesh cylinder, which affects the filtering efficiency; and it is inconvenient to block and open the lower outlet of the filter mesh cylinder during the filtering process of the filter mesh cylinder, and secondary filtration treatment is required.

[0008] To achieve the above object, the present utility model provides the following technical solutions: a novel aquaculture water filtering device, comprising a treatment tank, a rotatable filtering mechanism disposed in the treatment tank, a water pump located above the rotatable filtering mechanism, a sewage inlet pipe connected to the water outlet end of the water pump, and further comprising a plugging mechanism disposed at the lower side of the treatment tank; the rotatable filtering mechanism includes a rotary filtering barrel, a U-shaped frame disposed at the upper side of the treatment tank, an L-shaped frame disposed at the lower side of the treatment tank, a fixed column connected to the bottom end of the inner wall of the L-shaped frame and having one end extending into the rotary filtering barrel, a cleaning and scraping mechanism connected to the outer walls of the sewage inlet pipe and the fixed column and slidably engaged with the inner wall of the rotary filtering barrel, a rotary driving mechanism in transmission cooperation with the rotary filtering barrel and connected to the U-shaped frame, a booster pump disposed at the lower side of the treatment tank and arranged at an interval from the plugging mechanism, a branch pipe communicated with the water outlet end of the booster pump, an inclined nozzle communicated with one end of the outer wall of the branch pipe and acting on the inner wall of the rotary filtering barrel, and a fixed pipe fitting connected to the branch pipe and the sewage inlet pipe, the inclined nozzle is located on one side of the sewage inlet pipe, one end of the branch pipe sequentially penetrates through the L-shaped frame and the fixed column and extends into the interior of the rotary filtering barrel, the rotary filtering barrel is rotatably connected to the treatment tank and both ends extend to the outside of the treatment tank, and the rotary filtering barrel is rotatably connected to the sewage inlet pipe, the water pump is disposed above the U-shaped frame, one end of the sewage inlet pipe sequentially penetrates through the U-shaped frame and extends into the interior of the rotary filtering barrel, the plugging mechanism can plug the lower outlet of the rotary filtering barrel, and the plugging mechanism is slidably engaged with the fixed column.

[0009] Further, a ring plate is provided on the outer wall of the sewage inlet pipe; the rotary filtering barrel includes a filter mesh barrel located in the treatment tank and having a conical hopper shape at the lower end, an upper rotary barrel and a lower rotary barrel respectively communicated with the upper and lower ends of the filter mesh barrel, and an annular sliding groove provided in the upper opening of the upper rotary barrel, the ring plate is located in the annular sliding groove and is slidably engaged with the annular sliding groove, and both the lower rotary barrel and the upper rotary barrel are rotatably connected to the treatment tank and one end extends to the outside of the treatment tank.

[0010] Further, the cleaning and scraping mechanism includes elastic members respectively connected to the outer walls of the sewage inlet pipe and the fixed column, a connecting plate connected to one end of the two elastic members, and a rubber scraper connected to one side of the connecting plate and slidably engaged with the inner wall of the filter mesh barrel.

[0011] Further, the elastic member includes an outer cylinder, an inner column slidably fitted in the outer cylinder and having one end extending to one end of the outer cylinder, and a spring sleeved outside the outer cylinder and the inner column, both ends of the spring are respectively connected to one side of the connecting plate and the outer wall of the fixed column or the sewage inlet pipe, one end of the inner column is connected to one side of the connecting plate, and one end of the outer cylinder is connected to the outer wall of the fixed column or the sewage inlet pipe.

[0012] Further, a circular opening and a circular plugging opening are successively arranged on the lower side of the lower rotating cylinder from top to bottom; a limiting ring located in the circular opening is fixedly connected to the outer wall of the fixed column, and an annular sewage discharge opening is formed between the circular opening and the limiting ring; the plugging mechanism includes electric push rods arranged on the lower side of the treatment tank and located on both sides of the lower rotating cylinder respectively, L-shaped plates respectively connected to the output ends of the two electric push rods, and an annular plugging plate connected to the upper sides of the two L-shaped plates and adapted to the annular sewage discharge opening. The annular plugging plate is sleeved on and slidably matched with the outer wall of the fixed column.

[0013] Further, the rotation driving mechanism includes a motor arranged on the upper side of the U-shaped frame and arranged at intervals with the water pump, a rotating shaft connected to the output end of the motor, a first gear arranged on the outer wall of the rotating shaft, and a second gear arranged on the outer wall of the upper rotating cylinder. The first gear and the second gear are meshed and connected, and the rotating shaft is rotatably connected between the inner wall of the U-shaped frame and the upper side of the treatment tank.

[0014] Further, a backwashing mechanism is arranged on the inner wall of the treatment tank, and the backwashing mechanism acts on the filter screen cylinder.

[0015] Further, the backwashing mechanism includes a water pipe communicated with the outer wall of the branch pipe, and a plurality of spray heads arranged on the pipe wall of the water pipe and arrayed along the length direction of the water pipe. All the spray heads are located inside the treatment tank.

[0016] Further, a drain pipe communicated with the lower side of the treatment tank and arranged at intervals with the plugging mechanism and provided with a valve on the outer wall is connected.

[0017] Further, the inner wall of the L-shaped frame corresponding to the circular opening is arranged obliquely downward.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] The present utility model has the following beneficial effects:

[0020] 1. When cleaning the filter screen cylinder of the rotary filter barrel, the rotary filter barrel is driven to rotate by the rotation driving mechanism. During the rotation process, the cleaning and scraping mechanism connected to the sewage inlet pipe and the fixed column scrapes off the dirt and impurities adhered to the inner wall of the rotating filter screen cylinder. The controller controls the booster pump to start, pumps the water in the treatment tank into the branch pipe, and then sprays it out through the inclined spray heads to further wash and separate the dirt and impurities adhered to the inner wall of the rotary filter barrel, thereby facilitating the scraping, washing and cleaning of the dirt and impurities adhered to the inner wall of the filter screen cylinder and improving the filtering efficiency of the filter screen cylinder;

[0021] 2. When filtering and treating aquaculture water, the lower outlet of the rotary filter barrel is blocked by a blocking mechanism. When discharging the filtered dirt and impurities, the blocking mechanism is controlled to open the lower outlet of the rotary filter barrel, and the dirt and impurities filtered and collected in the rotary filter barrel are discharged. Thus, the device facilitates the control of the blocking and opening of the lower opening of the rotary filter barrel, solving the problems that some water needs secondary filtration during the filtration process of the existing device and the filter screen plate in the collection box needs to be manually cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the new aquaculture water body filtering device of the present utility model;

[0023] Figure 2 is a schematic sectional view of the new aquaculture water body filtering device of the present utility model;

[0024] Figure 3 of the present utility model Figure 2 is an enlarged schematic view at A in;

[0025] Figure 4 is a system control block diagram of the new aquaculture water body filtering device of the present utility model.

[0026] In the figure: 1, treatment tank; 2, rotatable filtering mechanism; 3, cleaning and scraping mechanism; 4, drain pipe; 5, blocking mechanism; 6, water pump; 7, sewage inlet pipe; 8, U-shaped frame; 9, L-shaped frame; 10, fixed column; 11, limiting ring; 12, elastic member; 13, connecting plate; 14, rubber scraping plate; 15, outer cylinder; 16, inner column; 17, spring; 18, filter screen cylinder; 19, upper rotating cylinder; 20, lower rotating cylinder; 21, circular opening; 22, circular blocking opening; 23, annular sliding groove; 24, ring plate; 25, electric push rod; 26, L-shaped plate; 27, annular blocking plate; 28, booster pump; 29, water pipe; 30, spray head; 31, motor; 32, rotating shaft; 33, first gear; 34, second gear; 35, branch pipe; 36, inclined spray head; 37, fixed pipe fitting. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Please refer to Figures 1-4, a new type of aquaculture water filtration device, comprising a treatment tank 1, a rotatable filtration mechanism 2 arranged inside the treatment tank 1, a water pump 6 located above the rotatable filtration mechanism 2, and a sewage inlet pipe 7 connected to the water outlet end of the water pump 6. It also includes a plugging mechanism 5 arranged on the lower side of the treatment tank 1; one side of the treatment tank 1 is provided with an observable transparent window, which is convenient for observing the collection amount of dirt and impurities inside the rotatable filtration mechanism 2 and discharging them in time; the rotatable filtration mechanism 2 includes a rotating filtration barrel, a U-shaped frame 8 connected to the upper side of the treatment tank 1, an L-shaped frame 9 connected to the lower side of the treatment tank 1, a fixed column 10 connected to the bottom end of the inner wall of the L-shaped frame 9 and extending into the rotating filtration barrel at one end, a cleaning and scraping mechanism 3 connected to the outer walls of the sewage inlet pipe 7 and the fixed column 10 and slidingly matched with the inner wall of the rotating filtration barrel, a rotation driving mechanism drivingly matched with the rotating filtration barrel and connected to the U-shaped frame 8, a booster pump 28 arranged on the lower side of the treatment tank 1 and arranged at an interval from the plugging mechanism 5, a branch pipe 35 communicated with the water outlet end of the booster pump 28, an inclined spray head 36 communicated with one end of the outer wall of the branch pipe 35 and acting on the inner wall of the rotating filtration barrel, and a fixed pipe fitting 37 connecting the branch pipe 35 and the sewage inlet pipe 7. The inclined spray head 36 is located on one side of the sewage inlet pipe 7. One end of the branch pipe 35 sequentially penetrates through the L-shaped frame 9 and the fixed column 10 and extends into the interior of the rotating filtration barrel. The rotating filtration barrel is rotatably connected to the treatment tank 1 and both ends extend to the outside of the treatment tank 1, and the rotating filtration barrel is rotatably connected to the sewage inlet pipe 7. The water pump 6 is arranged on the upper side of the U-shaped frame 8. One end of the sewage inlet pipe 7 sequentially penetrates through the U-shaped frame 8 and extends into the interior of the rotating filtration barrel. The plugging mechanism 5 can plug the lower outlet of the rotating filtration barrel, and the plugging mechanism 5 is slidably matched with the fixed column 10; when cleaning the filter mesh cylinder 18 of the rotating filtration barrel, the rotating filtration barrel is driven to rotate by the rotation driving mechanism. During the rotation, the cleaning and scraping mechanism 3 connected to the sewage inlet pipe 7 and the fixed column 10 scrapes off the dirt and impurities adhered to the inner wall of the rotating filter mesh cylinder 18. The controller controls the booster pump 28 to start, pumps the water in the treatment tank 1 into the branch pipe 35, and then sprays it out through the inclined spray head 36 to further wash and separate the dirt and impurities adhered to the inner wall of the rotating filtration barrel, thereby facilitating the scraping, washing and cleaning of the dirt and impurities adhered to the inner wall of the filter mesh cylinder 18 and improving the filtration efficiency of the filter mesh cylinder 18; when filtering and treating aquaculture water, the lower outlet of the rotating filtration barrel is plugged by the plugging mechanism 5. When discharging the filtered dirt and impurities, the plugging mechanism 5 is controlled to open the lower outlet of the rotating filtration barrel, and the dirt and impurities filtered and collected in the rotating filtration barrel are discharged, which is convenient for controlling the plugging and opening of the lower opening of the rotating filtration barrel, and solves the problems that in the existing device, some water needs to be filtered twice during the filtration process and the filter mesh plate in the collection box needs to be manually cleaned.

[0028] An annular plate 24 is provided on the outer wall of the sewage inlet pipe 7; the rotary filter barrel includes a filter mesh cylinder 18 located in the treatment tank 1 and having a conical hopper shape at the lower end, an upper rotary cylinder 19 and a lower rotary cylinder 20 respectively connected to the upper and lower ends of the filter mesh cylinder 18, and an annular chute 23 opened in the upper side opening of the upper rotary cylinder 19. The annular plate 24 is located in the annular chute 23 and is slidably matched with the annular chute 23. Both the lower rotary cylinder 20 and the upper rotary cylinder 19 are rotatably connected to the treatment tank 1 and one end extends to the outside of the treatment tank 1; since the lower end of the filter mesh cylinder 18 is in a conical hopper shape, it is convenient for the dirt and impurities collected in the filter mesh cylinder 18 to be discharged; during the rotation of the rotary filter barrel, the annular plate 24 on the outer wall of the upper rotary cylinder 19 slides in the annular chute 23, and a sealing structure is provided at the position where the upper rotary cylinder 19 and the lower rotary cylinder 20 are rotatably connected to the treatment tank 1, and specifically, a sealing ring or a gasket can be used.

[0029] The cleaning and scraping mechanism 3 includes elastic members 12 respectively connected to the outer walls of the sewage inlet pipe 7 and the fixed column 10, a connecting plate 13 connected to one ends of the two elastic members 12, and a rubber scraper 14 connected to one side of the connecting plate 13 and slidably matched with the inner wall of the filter mesh cylinder 18; during the rotation of the filter mesh cylinder 18, the rubber scraper 14 connected to the connecting plate 13 scrapes off the dirt and impurities adhering to the inner wall of the filter mesh cylinder 18.

[0030] The elastic member 12 includes an outer cylinder 15, an inner column 16 slidably fitted in the outer cylinder 15 and having one end extending to one end of the outer cylinder 15, and a spring 17 sleeved outside the outer cylinder 15 and the inner column 16. The two ends of the spring 17 are respectively connected to one side of the connecting plate 13 and the outer wall of the fixed column 10 or the sewage inlet pipe 7. One end of the inner column 16 is connected to one side of the connecting plate 13, and one end of the outer cylinder 15 is connected to the outer wall of the fixed column 10 or the sewage inlet pipe 7; through the cooperation of the spring 17, the inner column 16 and the outer cylinder 15, the rubber scraper 14 is driven to always fit with the inner wall of the filter mesh cylinder 18.

[0031] The lower side of the lower rotating cylinder 20 is successively provided with a circular opening 21 and a circular blocking opening 22 from top to bottom; a limiting ring 11 located within the circular opening 21 is fixedly connected to the outer wall of the fixed column 10, and an annular sewage discharge opening is formed between the circular opening 21 and the limiting ring 11; the blocking mechanism 5 includes electric push rods 25 provided on the lower side of the treatment tank 1 and located on both sides of the lower rotating cylinder 20 respectively, L-shaped plates 26 respectively connected to the output ends of the two electric push rods 25, and an annular blocking plate 27 connected to the upper sides of the two L-shaped plates 26 and adapted to the annular sewage discharge opening. The annular blocking plate 27 is sleeved on and slidably engaged with the outer wall of the fixed column 10; the inner diameter of the annular blocking plate 27 is slightly larger than the diameter of the fixed column 10, and sealing structures are provided between the annular blocking plate 27 and both the circular blocking opening 22 and the limiting ring 11, which can specifically adopt sealing rings or gaskets; when it is necessary to discharge the dirt and impurities filtered and collected in the filter mesh cylinder 18 for treatment, the two electric push rods 25 are activated, the two L-shaped plates 26 drive the annular blocking plate 27 to descend, and the dirt and impurities filtered and collected in the filter mesh cylinder 18 are discharged through the annular sewage discharge opening; thus, it is convenient to block or open the lower end opening of the lower rotating cylinder 20.

[0032] The rotation driving mechanism includes a motor 31 provided on the upper side of the U-shaped frame 8 and arranged at an interval from the water pump 6, a rotating shaft 32 connected to the output end of the motor 31, a first gear 33 provided on the outer wall of the rotating shaft 32, and a second gear 34 provided on the outer wall of the upper rotating cylinder 19. The first gear 33 and the second gear 34 are meshed and connected, and the rotating shaft 32 is rotatably connected between the inner wall of the U-shaped frame 8 and the upper side of the treatment tank 1; by activating the motor 31, the motor 31 drives the rotating shaft 32 to rotate, drives the first gear 33 to rotate, the first gear 33 drives the second gear 34 to rotate, and then drives the upper rotating cylinder 19 to rotate, synchronously driving the filter mesh cylinder 18 to rotate, thus facilitating driving the filter mesh cylinder 18 to rotate.

[0033] The inner wall of the treatment tank 1 is provided with an anti-flushing mechanism, and the anti-flushing mechanism acts on the filter mesh cylinder 18; the anti-flushing mechanism includes a water pipe 29 communicated with the outer wall of the branch pipe 35, and a plurality of spray nozzles 30 arranged in an array along the length direction of the water pipe 29 on the pipe wall of the water pipe 29. The plurality of spray nozzles 30 are all located inside the treatment tank 1; the water in the branch pipe 35 enters the water pipe 29 and is sprayed out through the plurality of spray nozzles 30 to perform anti-flushing and cleaning on the rotating filter mesh cylinder 18.

[0034] A drain pipe 4 communicated with the lower side of the treatment tank 1 and arranged at an interval from the blocking mechanism 5 and provided with a valve on the outer wall is provided; the water filtered and treated in the treatment tank 1 is circulated and discharged into the aquaculture pond through the drain pipe 4.

[0035] The inner wall of the L-shaped frame 9 corresponding to the circular opening 21 is arranged obliquely downward; by arranging the inner wall of the L-shaped frame 9 corresponding to the circular opening 21 obliquely downward, it is convenient for the dirt and impurities falling on the L-shaped frame 9 to slide off.

[0036] One side of the processing box 1 is provided with a controller, and the controller is electrically connected to the booster pump 28, the motor 31, the water pump 6, and the electric push rod 25.

[0037] Working principle: When treating the water in the aquaculture pond, the sewage pipe connected to the water pump 6 is connected to the sewage pond. The controller controls the water pump 6 to start. The water in the sewage pond enters the filter mesh cylinder 18 through the sewage inlet pipe 7. The dirt and impurities in the water are filtered and collected through the rotating mesh cylinder 18. The filtered water is circulated and discharged into the aquaculture pond through the drain pipe 4; when cleaning the filter mesh cylinder 18, the controller controls the motor 31 and the booster pump 28 to start. The motor 31 drives the rotating shaft 32 to rotate, drives the first gear 33 to rotate, the first gear 33 drives the second gear 34 to rotate, and then drives the upper rotating cylinder 19 to rotate, synchronously driving the filter mesh cylinder 18 to rotate. During the rotation process, it contacts the rubber scraper 14 connected to the connecting plate 13, and scrapes off the dirt and impurities adhered to the inner wall of the filter mesh cylinder 18. Through the booster pump 28, the water in the processing box 1 is pumped into the branch pipe 35, and then sprayed out through the inclined nozzle 36 to further wash and separate the dirt and impurities adhered to the inner wall of the rotating filter barrel, thereby facilitating the scraping, washing and cleaning of the dirt and impurities adhered to the inner wall of the filter mesh cylinder 18, improving the filtering efficiency of the filter mesh cylinder 18. At the same time, the water in the branch pipe 35 enters the water pipe 29 and is sprayed out through multiple nozzles 30 to backwash and clean the filter mesh cylinder 18 during rotation; when filtering and treating the aquaculture water, the lower outlet of the rotating filter barrel is blocked by the blocking mechanism 5. When discharging the filtered dirt and impurities, the two electric push rods 25 are started, and the two L-shaped plates 26 drive the annular blocking plate 27 to descend. The dirt and impurities filtered and collected in the filter mesh cylinder 18 are discharged through the annular sewage outlet. Therefore, the device is convenient to control the blocking and opening of the lower opening of the rotating filter barrel, solving the problems that some water needs secondary filtration treatment during the filtering process of the existing device and the filter screen plate in the collection box needs to be manually cleaned.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel aquaculture water filtration device, comprising a treatment tank (1), a rotatable filtration mechanism (2) arranged in the treatment tank (1), a water pump (6) located above the rotatable filtration mechanism (2), and a sewage inlet pipe (7) connected to the water outlet end of the water pump (6), characterized in that, It further includes a plugging mechanism (5) provided on the lower side of the treatment tank (1); the rotatable filtering mechanism (2) includes a rotatable filtering barrel, a U-shaped frame (8) provided on the upper side of the treatment tank (1), an L-shaped frame (9) provided on the lower side of the treatment tank (1), a fixed column (10) connected to the inner bottom end of the inner wall of the L-shaped frame (9) and having one end extending into the rotatable filtering barrel, a cleaning and scraping mechanism (3) connected to the outer walls of the sewage inlet pipe (7) and the fixed column (10) and slidably engaged with the inner wall of the rotatable filtering barrel, a rotary driving mechanism in transmission cooperation with the rotatable filtering barrel and connected to the U-shaped frame (8), a booster pump (28) provided on the lower side of the treatment tank (1) and arranged at an interval from the plugging mechanism (5), a branch pipe (35) communicated with the water outlet end of the booster pump (28), an inclined spray head (36) communicated with one end of the outer wall of the branch pipe (35) and acting on the inner wall of the rotatable filtering barrel, and a fixed pipe fitting (37) connecting the branch pipe (35) and the sewage inlet pipe (7). The inclined spray head (36) is located on one side of the sewage inlet pipe (7). One end of the branch pipe (35) sequentially penetrates through the L-shaped frame (9) and the fixed column (10) and extends into the interior of the rotatable filtering barrel. The rotatable filtering barrel is rotatably connected to the treatment tank (1) and both ends extend to the outside of the treatment tank (1), and the rotatable filtering barrel is rotatably connected to the sewage inlet pipe (7). The water pump (6) is provided on the upper side of the U-shaped frame (8). One end of the sewage inlet pipe (7) sequentially penetrates through the U-shaped frame (8) and extends into the interior of the rotatable filtering barrel. The plugging mechanism (5) can plug the lower outlet of the rotatable filtering barrel, and the plugging mechanism (5) is slidably engaged with the fixed column (10).

2. The novel aquaculture water filtration device according to claim 1, characterized in that, A ring plate (24) is provided on the outer wall of the sewage inlet pipe (7); the rotatable filtering barrel includes a filter mesh cylinder (18) located inside the treatment tank (1) and having a conical hopper shape at the lower end, an upper rotatable cylinder (19) and a lower rotatable cylinder (20) respectively communicated with the upper and lower ends of the filter mesh cylinder (18), and an annular sliding groove (23) provided in the upper opening of the upper rotatable cylinder (19). The ring plate (24) is located in the annular sliding groove (23) and is slidably engaged with the annular sliding groove (23). Both the lower rotatable cylinder (20) and the upper rotatable cylinder (19) are rotatably connected to the treatment tank (1) and one end extends to the outside of the treatment tank (1).

3. The novel aquaculture water filtration device according to claim 2, characterized in that, The cleaning and scraping mechanism (3) includes elastic members (12) respectively connected to the outer walls of the sewage inlet pipe (7) and the fixed column (10), a connecting plate (13) connected to one end of the two elastic members (12), and a rubber scraping plate (14) connected to one side of the connecting plate (13) and slidably engaged with the inner wall of the filter mesh cylinder (18).

4. A novel aquaculture water filtration device according to claim 3, characterized in that, The elastic member (12) includes an outer cylinder (15), an inner column (16) slidably fitted inside the outer cylinder (15) and having one end extending to one end of the outer cylinder (15), and a spring (17) sleeved outside the outer cylinder (15) and the inner column (16). Two ends of the spring (17) are respectively connected to one side of the connecting plate (13) and the outer wall of the fixed column (10) or the sewage inlet pipe (7). One end of the inner column (16) is connected to one side of the connecting plate (13), and one end of the outer cylinder (15) is connected to the outer wall of the fixed column (10) or the sewage inlet pipe (7).

5. The novel aquaculture water filtration device according to claim 2, characterized in that, A circular opening (21) and a circular blocking opening (22) are successively arranged on the lower side of the lower rotating cylinder (20) from top to bottom; a limiting ring (11) located inside the circular opening (21) is fixedly connected to the outer wall of the fixed column (10), and an annular sewage discharge opening is formed between the circular opening (21) and the limiting ring (11); the blocking mechanism (5) includes electric push rods (25) arranged on the lower side of the treatment tank (1) and located on both sides of the lower rotating cylinder (20), L-shaped plates (26) respectively connected to the output ends of the two electric push rods (25), and an annular blocking plate (27) connected to the upper sides of the two L-shaped plates (26) and adapted to the annular sewage discharge opening. The annular blocking plate (27) is sleeved on the outer wall of the fixed column (10) and is slidably fitted.

6. The novel aquatic culture water filtering device according to claim 2, wherein, The rotation driving mechanism includes a motor (31) arranged on the upper side of the U-shaped frame (8) and arranged at intervals with the water pump (6), a rotating shaft (32) connected to the output end of the motor (31), a first gear (33) arranged on the outer wall of the rotating shaft (32), and a second gear (34) arranged on the outer wall of the upper rotating cylinder (19). The first gear (33) and the second gear (34) are meshed and connected, and the rotating shaft (32) is rotatably connected between the inner wall of the U-shaped frame (8) and the upper side of the treatment tank (1).

7. A novel aquaculture water filtration device according to claim 2, characterized in that, An inner wall of the treatment tank (1) is provided with an anti-flushing mechanism which acts on the filter mesh cylinder (18).

8. A novel aquatic aquaculture water filtration device according to claim 7, characterized in that, The anti-flushing mechanism includes a water pipe (29) communicated with the outer wall of the branch pipe (35), and a plurality of spray heads (30) arranged on the pipe wall of the water pipe (29) and arrayed along the length direction of the water pipe (29). All the plurality of spray heads (30) are located inside the treatment tank (1).

9. A novel aquaculture water filtration device according to claim 1, characterized in that, The lower side of the treatment tank (1) is communicated with a drain pipe (4) arranged at intervals with the blocking mechanism (5) and having a valve on its outer wall.

10. A novel aquaculture water filtration device as claimed in claim 1, characterized in that, The inner wall of the L-shaped frame (9) corresponding to the circular opening (21) is obliquely arranged downward.

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