Aquaculture water purification device

Abstract

The application is suitable for the field of wastewater purification, and provides a fishery breeding water purification device, which comprises a purification tank, the inside of the purification tank is fixedly connected with a transverse partition plate, the inner bottom of the purification tank is fixedly connected with a filter cylinder, the top of the filter cylinder is connected with the bottom of the transverse partition plate, the filter cylinder divides the inside of the purification tank into an outer cavity and an inner cavity, the side of the purification tank is communicated with a drain pipe, the drain pipe is communicated with the outer cavity, the bottom of the purification tank is provided with a sewage discharge pipe, the sewage discharge pipe is communicated with the outer cavity, the bottom of the purification tank is provided with an inspection hole communicated with the inner cavity, the inspection hole is provided with an inspection cover, and the inspection cover is installed on the purification tank. The device can actively capture solid waste through the rotatable second filter screen, can recycle the solid waste in the breeding water in advance, avoids the solid waste from being captured when passing through the filter cylinder, avoids the filter cylinder from being blocked, and can improve the filtering efficiency of the solid waste.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of wastewater purification, and particularly relates to a fishery breeding water purification device. BACKGROUND

[0002] Aquaculture, also known as fish farming, refers to the artificial breeding of fish or various seafood in a fishpond on the shore for food. According to the water quality, aquaculture can be divided into three categories: freshwater aquaculture, brackish water aquaculture, and sea surface aquaculture. Aquaculture requires regular replacement of breeding water to remove fish feces and residual feed deposited at the bottom of the pond, so that the breeding objects can maintain the best physiological and ecological state under high-density breeding conditions, thereby achieving the purpose of healthy and rapid growth and maximizing the yield and quality of unit water body. However, if the replaced breeding water is discharged, it will cause a large amount of water resources to be wasted. Therefore, the replaced breeding water is usually purified and then reused.

[0003] The existing aquaculture water purification device mostly uses a single filtering or sedimentation method to remove solid waste such as feces and feed residues in the aquaculture water by delivering the aquaculture water to a filtering device for filtering and sedimentation. In the filtering process, the solid waste will adhere to the filtering structure, which can easily block the filter holes, reduce the filtering efficiency, and make it difficult to maintain and clean the solid waste.

[0004] In order to avoid the above technical problems, it is necessary to provide an aquaculture water purification device to overcome the defects in the prior art. SUMMARY

[0005] The present application aims to provide an aquaculture water purification device to solve the problems of easy blockage of filter holes by solid waste and inconvenient cleaning of solid waste.

[0006] The application is achieved, a fishery aquaculture water purification device, including the purification tank, the inside fixedly connected with the transverse partition plate of the purification tank, the inner bottom of the purification tank is fixedly connected with the filter cartridge, the top of the filter cartridge is connected with the bottom of the transverse partition plate, the filter cartridge divides the inside of the purification tank into the outer cavity and the inner cavity, the side of the purification tank is communicated with the drain pipe, the drain pipe is communicated with the outer cavity, the bottom of the purification tank is provided with the blowdown pipe, the blowdown pipe is communicated with the outer cavity, the valve is arranged on the blowdown pipe, the bottom of the purification tank is provided with the access hole communicated with the inner cavity, the access hole is provided with the access cover, the access cover is installed on the purification tank through the fixed bolt, the transverse partition plate is rotatably connected with the rotating shaft, one end of the rotating shaft in the inner cavity is fixedly connected with a plurality of rotating frames, a plurality of rotating frames are provided with the second filter screen, and one side of the rotating frame is in contact with the inner wall of the filter cartridge, so that the solid waste on the inner wall of the filter cartridge can be scraped off, the transverse partition plate is communicated with the water inlet pipe and the feeding pipe, the water inlet pipe is connected with the external water pump, which is used for introducing the aquaculture water into the purification tank, the feeding pipe is used for adding the flocculating agent into the outer cavity, so that the suspended solids in the aquaculture water are accelerated to precipitate, the water inlet pipe is communicated with the inner cavity, the feeding pipe is communicated with the outer cavity, one end of the water inlet pipe and the feeding pipe extends from the top of the purification tank, and the device further comprises:

[0007] The motor is fixedly installed on the top of the purification tank, and the output shaft of the motor is fixedly connected with one end of the rotating shaft.

[0008] The scraping mechanism is installed on the rotating frame, the output end of the scraping mechanism is in contact with the surface of the second filter screen, the scraping mechanism can scrape the solid waste on the second filter screen by relatively moving with the second filter screen, and the second filter screen is prevented from being blocked.

[0009] Further technical solutions, the scraping mechanism comprises a plurality of reciprocating wire rods and a plurality of scraping plates, a plurality of reciprocating wire rods are rotatably connected on the rotating frame, a plurality of scraping plates are slidably connected on the rotating frame, the reciprocating wire rod and the scraping plate are screw connected, one side of the scraping plate is in contact with one side of the second filter screen along the rotating direction of the second filter screen, preferably, the cross section of the scraping plate is trapezoidal, so that the scraping plate prevents the solid waste from falling, one end of the reciprocating wire rod is fixedly connected with a driven gear, the transverse partition plate is provided with an opening for the reciprocating wire rod to move, the top of the transverse partition plate is fixedly connected with a main gear through a fixed rod, the axis of the main gear is coincident with the axis of the rotating shaft, and the plurality of driven gears are meshingly connected with the main gear.

[0010] Further technical solutions, the rotating shaft is fixedly connected with a sealing plate, the outer diameter of the sealing plate is same with the diameter of the opening, and the sealing plate is provided with a through hole for the reciprocating wire rod to pass through.

[0011] Further technical solutions, the stirring mechanism and linkage mechanism are installed on the transverse partition plate, one end of the stirring mechanism extends into the outer cavity, the stirring mechanism is used for stirring the aquaculture water, and the mixing efficiency of the aquaculture water and the flocculating agent is improved; the linkage mechanism is connected between the stirring mechanism and the rotating shaft, and the rotating shaft can drive the stirring mechanism to rotate through the linkage mechanism.

[0012] Further technical solutions, the stirring mechanism includes a plurality of stirring shafts rotatably connected to the transverse partition plate, and a plurality of stirring plates are fixedly connected to one end of the plurality of stirring shafts extending into the outer cavity; a gear ring is rotatably connected to the inside of the purification tank; a plurality of transmission gears are fixedly connected to the plurality of stirring shafts; and the plurality of transmission gears are in meshing connection with the gear ring. Preferably, the plurality of stirring shafts are symmetrically distributed around the axis of the transverse partition plate, thereby improving the mixing efficiency of the aquaculture water and the flocculating agent.

[0013] Further technical solutions, the linkage mechanism includes two sprockets fixedly connected to the rotating shaft and the stirring shaft respectively, and a chain is in transmission connection between the two sprockets.

[0014] Further technical solutions, the mud scraping assembly includes a plurality of connecting plates fixedly connected to the bottom of the gear ring, a rotating ring fixedly connected to the bottom of the plurality of connecting plates, a plurality of mud scrapers fixedly connected to the inner side of the rotating ring, and the plurality of mud scrapers are in contact with the inner bottom of the purification tank. When the gear ring drives the rotating ring to rotate through the connecting plates, the rotating ring drives the mud scrapers to rotate, the mud scrapers scrape the precipitate on the inner bottom of the purification tank to the drain pipe, and then the precipitate can be discharged.

[0015] Further technical solutions, the filter includes a filter pipe, one end of the filter pipe is threadedly connected to the drain pipe, the filter pipe is inserted into the inside of the drain pipe, and an inclined first filter screen is arranged in the inside of the filter pipe. The first filter screen filters the aquaculture water after precipitation again, so that the purification effect of the aquaculture water is better. When the first filter screen is blocked, the filter pipe can be disassembled, and then the first filter screen can be cleaned, which is more convenient to use. Preferably, one end of the first filter screen away from the purification tank is inclined downward. Under the scouring of the water flow, the solid waste is gathered at the bottom of the first filter screen, and the aquaculture water can pass through the top of the first filter screen, so that the probability of the solid waste blocking the first filter screen can be effectively reduced, the frequency of cleaning the filter can be reduced, and the service life of the filter can be prolonged.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows:

[0017] 1. When the solid waste is filtered again, the motor drives the rotating shaft to rotate, the rotating shaft drives the rotating frame and the No. 2 filter screen to rotate, the aquaculture water can flow out through the No. 2 filter screen, and the solid waste in the aquaculture water is blocked by the No. 2 filter screen, under the action of inertia, the solid waste is left on the No. 2 filter screen, compared with the static filtering method in the prior art, the device actively captures the solid waste through the rotatable No. 2 filter screen, can recycle the solid waste in the aquaculture water in advance, avoids that the solid waste is captured when passing through the filter cylinder, thereby avoiding that the filter cylinder is blocked, and the filtering efficiency of the solid waste can be improved;

[0018] 2. After the solid waste is captured by the No. 2 filter screen, under the action of the main gear, the driven gear drives the reciprocating lead screw to rotate, the reciprocating lead screw drives the scraper plate to reciprocate and lift, the scraper plate removes the solid waste on the No. 2 filter screen, so that the solid waste falls to the bottom of the purification tank, avoids that the No. 2 filter screen is blocked, and simultaneously avoids that the No. 2 filter screen drives the aquaculture water to move synchronously, thereby improving the filtering efficiency;

[0019] 3. When the solid waste in the purification tank is cleaned, the stirring shaft drives the gear ring to rotate through the transmission gear, the gear ring drives the rotating ring and the mud scraper to rotate through the connecting plate, the mud scraper scrapes off the sediment at the bottom of the purification tank and drives it to the sewage pipe, the valve is opened, the remaining aquaculture water in the purification tank and the sediment are discharged from the sewage pipe, then the maintenance cover is removed, the solid waste in the inner cavity can be cleaned, and the device is more convenient to clean. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a top view of the three-dimensional sectional structure of the application;

[0021] Figure 2 It is a bottom view of the three-dimensional structure of the application;

[0022] Figure 3 It is a front view of the sectional structure of the application;

[0023] Figure 4 It is a sectional structure of the application; Figure 1 It is an enlarged structure diagram of position A in the application;

[0024] Figure 5 It is an enlarged structure diagram of position B in the application; Figure 3 It is an enlarged structure diagram of position B in the application;

[0025] Figure 6 It is a three-dimensional structure diagram of the rotating frame of the application;

[0026] Figure 7 It is a three-dimensional structure diagram of the scraper plate of the application;

[0027] Figure 8 It is a three-dimensional structure diagram of the mud scraping assembly of the application.

[0028] In the attached diagram: 1. Purification tank; 2. Horizontal partition; 3. Water inlet pipe; 4. Rotating shaft; 5. Linkage mechanism; 51. Sprocket; 52. Chain; 6. Feeding pipe; 7. Agitating mechanism; 71. Transmission gear; 72. Gear ring; 73. Agitating shaft; 74. Agitating plate; 8. Drain pipe; 9. Filter; 91. Filter pipe; 92. No. 1 filter screen; 10. Sewage pipe; 11. Inspection cover; 12. Scraping mechanism; 121. Driven gear; 122. Main gear; 123. Reciprocating screw; 124. Fixed rod; 125. Scraper plate; 13. Sealing plate; 14. Motor; 15. Sludge scraping assembly; 151. Connecting plate; 152. Sludge scraper; 153. Rotating ring; 16. Rotating frame; 17. Filter cylinder; 18. No. 2 filter screen. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0031] like Figures 1-8 As shown, this invention provides a water purification device for aquaculture, comprising a purification tank 1. A horizontal partition 2 is fixedly connected inside the purification tank 1. A filter cylinder 17 is fixedly connected to the bottom of the purification tank 1, with its top connected to the bottom of the partition 2. The filter cylinder 17 divides the interior of the purification tank 1 into an outer cavity and an inner cavity. A drain pipe 8 is connected to the side of the purification tank 1, communicating with the outer cavity. A sewage pipe 10 is provided at the bottom of the purification tank 1, communicating with the outer cavity. A valve is provided on the sewage pipe 10. An inspection port communicating with the inner cavity is opened at the bottom of the purification tank 1, and an inspection cover 11 is provided at the inspection port. The inspection cover 11 is installed on the purification tank 1 by fixing bolts. A rotating shaft 4 is rotatably connected to the partition 2. Multiple rotating frames 16 are fixedly connected to one end of the rotating shaft 4 within the inner cavity. Each of the rotating frames 16 is equipped with a second-order filter screen 18, and one side of each rotating frame 16 contacts the inner wall of the filter cylinder 17, thereby scraping off solid waste from the inner wall of the filter cylinder 17 and preventing clogging. A water inlet pipe 3 and a feeding pipe 6 are connected to the partition 2. The water inlet pipe 3 is connected to an external water pump and is used to introduce aquaculture water into the purification tank 1. The feeding pipe 6 is used to add flocculant to the outer cavity, accelerating the sedimentation of suspended solids in the aquaculture water. The water inlet pipe 3 is connected to the inner cavity, and the feeding pipe 6 is connected to the outer cavity. One end of both the water inlet pipe 3 and the feeding pipe 6 extends from the top of the purification tank 1. The system also includes:

[0032] A motor 14 is fixedly installed on the top of the purification tank 1, and an output shaft of the motor 14 is fixedly connected with one end of the rotating shaft 4;

[0033] A scraping mechanism 12 is installed on the rotating frame 16, and an output end of the scraping mechanism 12 is in contact with the surface of the second filter screen 18, and the scraping mechanism 12 can scrape the solid garbage on the second filter screen 18 by moving relative to the second filter screen 18, so as to avoid the second filter screen 18 from being blocked.

[0034] In the embodiment of the present application, as shown in Figures 4-7 As a preferred embodiment of the present application, the scraping mechanism 12 comprises a plurality of reciprocating wire rods 123 and a plurality of scraping plates 125, the reciprocating wire rods 123 are respectively rotationally connected with the rotating frame 16, the scraping plates 125 are respectively slidably connected with the rotating frame 16, the reciprocating wire rods 123 and the scraping plates 125 are threadedly connected, one side of the scraping plate 125 is in contact with one side of the second filter screen 18 along the rotating direction of the second filter screen 18, preferably, the cross section of the scraping plate 125 is trapezoidal, so as to avoid the scraping plate 125 from preventing the solid garbage from falling, one end of each of the reciprocating wire rods 123 penetrating through the transverse partition plate 2 is fixedly connected with a driven gear 121, the transverse partition plate 2 is provided with an opening for the reciprocating wire rod 123 to move, the top of the transverse partition plate 2 is fixedly connected with a main gear 122 through a fixing rod 124, the axis of the main gear 122 coincides with the axis of the rotating shaft 4, and each of the driven gears 121 is meshingly connected with the main gear 122.

[0035] In order to avoid the breeding water in the inner cavity from overflowing, in the embodiment of the present application, as shown in Figure 4 As a preferred embodiment of the present application, the rotating shaft 4 is fixedly connected with a sealing plate 13, the outer diameter of the sealing plate 13 is the same as the diameter of the opening, and the sealing plate 13 is provided with through holes for the reciprocating wire rods 123 to penetrate through.

[0036] In the embodiment of the present application, as shown in Figure 1 and Figure 3 As a preferred embodiment of the present application, the stirring mechanism 7 is further connected with the rotating shaft 4 through the linkage mechanism 5, and the rotating shaft 4 can drive the stirring mechanism 7 to rotate through the linkage mechanism 5.

[0037] In the embodiment of the present application, as shown in Figure 3As shown in the figure, as a preferred embodiment of the present application, the stirring mechanism 7 comprises a plurality of stirring shafts 73 rotatably connected to the cross plate 2, and each of the plurality of stirring shafts 73 is fixedly connected with a plurality of stirring plates 74 at one end extending into the outer cavity, the inside of the purification tank 1 is rotatably connected with a gear ring 72, each of the plurality of stirring shafts 73 is fixedly connected with a transmission gear 71, and each of the plurality of transmission gears 71 is meshingly connected with the gear ring 72. Preferably, the plurality of stirring shafts 73 are symmetrically distributed around the axis of the cross plate 2, thereby improving the mixing efficiency of the aquaculture water and the flocculant.

[0038] In the embodiment of the present application, as shown in the figure, Figure 1 and Figure 4 As a preferred embodiment of the present application, the linkage mechanism 5 comprises two sprockets 51 fixedly connected to the rotating shaft 4 and the stirring shaft 73 respectively, and the two sprockets 51 are drivingly connected with a chain 52.

[0039] 4 The rotation of one stirring shaft 73 is driven by the sprocket 51 and the chain 52, the stirring shaft 73 drives the transmission gear 71 to rotate, the transmission gear 71 drives the gear ring 72 to rotate, the gear ring 72 drives the other transmission gears 71 to rotate, and the other transmission gears 71 drive the other stirring shafts 73 to rotate, thereby causing the plurality of stirring shafts 73 to drive the stirring plates 74 to stir the aquaculture water.

[0040] In the embodiment of the present application, as shown in the figure, Figure 3 and Figure 8 As a preferred embodiment of the present application, it further comprises a mud scraping assembly 15, the mud scraping assembly 15 comprises a plurality of connecting plates 151, each of the plurality of connecting plates 151 is fixedly connected to the bottom of the gear ring 72, the bottom of each of the plurality of connecting plates 151 is fixedly connected with a same rotating ring 153, the inner side of the rotating ring 153 is fixedly connected with a plurality of mud scrapers 152, and each of the plurality of mud scrapers 152 is in contact with the inner bottom of the purification tank 1. When discharging sewage, the gear ring 72 drives the rotating ring 153 to rotate through the connecting plate 151, the rotating ring 153 drives the mud scraper 152 to rotate, the mud scraper 152 scrapes the sediment on the inner bottom of the purification tank 1 to the sewage discharge pipe 10, and then the sediment can be discharged.

[0041] In the embodiment of the present application, as shown in the figure, Figure 3As shown, as a preferred embodiment of the present application, it further comprises a filter 9, the filter 9 comprises a filter pipe 91, one end of the filter pipe 91 is screwed on the drain pipe 8, one end of the filter pipe 91 is inserted into the inside of the drain pipe 8, the inside of the filter pipe 91 is provided with an inclined first filter screen 92, the first filter screen 92 filters the bred water after precipitation again, so that the bred water purification effect is better, when the first filter screen 92 is blocked, the filter pipe 91 can be removed, then the first filter screen 92 is cleaned, it is more convenient to use, preferably, the end of the first filter screen 92 away from the purification tank 1 is inclined downward, under the scouring of the water flow, the solid waste is gathered at the bottom of the first filter screen 92, the bred water can pass through the top of the first filter screen 92, so that the probability of the solid waste blocking the first filter screen 92 can be effectively reduced, the frequency of cleaning the filter 9 is reduced, and the use time of the filter 9 is prolonged.

[0042] In use, the external water pump is connected with the water inlet pipe 3, the bred water is introduced into the purification tank 1 from the water inlet pipe 3, the motor 14 drives the rotating shaft 4 to rotate, the rotating shaft 4 drives the rotating frame 16 and the second filter screen 18 to rotate, the bred water can flow out through the second filter screen 18, and the solid waste in the bred water is blocked by the second filter screen 18 and stays on the second filter screen 18 under the action of inertia. Compared with the static filtration method in the prior art, the device actively captures the solid waste through the rotatable second filter screen 18, can recycle the solid waste in the bred water in advance, can improve the solid waste filtration efficiency, and avoids the device being blocked by the solid waste. At the same time, the rotating frame 16 drives the reciprocating screw rod 123 to rotate around the rotating shaft 4, the reciprocating screw rod 123 drives the driven gear 121 to rotate, the driven gear 121 rolls on the main gear 122 under the action of the main gear 122, the driven gear 121 drives the reciprocating screw rod 123 to rotate, the reciprocating screw rod 123 drives the scraping plate 125 to reciprocate, the scraping plate 125 removes the solid waste on the second filter screen 18, so that the solid waste falls to the bottom of the purification tank 1, avoids the second filter screen 18 being blocked, and avoids the second filter screen 18 driving the bred water to move synchronously, thereby improving the filtration efficiency. The filtered bred water enters the outer cavity from the filter cylinder 17, the flocculating agent is added into the purification tank 1 from the feeding pipe 6, the flocculating agent is mixed with the bred water, and the suspended matter in the bred water is precipitated. At the same time, the rotating shaft 4 drives the stirring shaft 73 to rotate through the linkage mechanism 5, the stirring shaft 73 drives the stirring plate 74 to rotate, the stirring plate 74 stirs the bred water and the flocculating agent, improves the mixing efficiency of the bred water and the flocculating agent, improves the precipitation efficiency, and the bred water after precipitation is discharged from the drain pipe 8 and is further filtered by the first filter screen 92 during the discharging process, avoiding the precipitate being discharged;

[0043] When the solid waste in the purification tank 1 is cleaned, the stirring shaft 73 drives the gear ring 72 to rotate through the transmission gear 71, the gear ring 72 drives the rotating ring 153 to rotate through the connecting plate 151, the rotating ring 153 drives the mud scraper 152 to rotate, the mud scraper 152 scrapes off the sediment at the bottom of the purification tank 1 and drives the sediment to the drain pipe 10, the valve is opened, the remaining aquaculture water and the sediment in the purification tank 1 are discharged from the drain pipe 10, then the maintenance cover 11 is removed, and the solid waste in the inner cavity can be cleaned, so that the device is more convenient to clean.

[0044] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0045] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A water purification device for aquaculture, comprising a purification tank, characterized in that, The purification tank is internally fixedly connected to a horizontal partition. A filter cylinder is fixedly connected to the bottom of the purification tank, with its top connected to the bottom of the partition. The filter cylinder divides the interior of the purification tank into an outer cavity and an inner cavity. A drain pipe connects to the side of the purification tank and is connected to the outer cavity. A sewage pipe connects to the bottom of the purification tank and is connected to the outer cavity. An inspection port communicating with the inner cavity is located at the bottom of the purification tank, and an inspection cover is installed at the inspection port. A rotating shaft is rotatably connected to the partition. Multiple rotating frames are fixedly connected to one end of the rotating shaft in the inner cavity. Each of the rotating frames has a second-order filter screen, and one side of each rotating frame contacts the inner wall of the filter cylinder. A water inlet pipe and a feeding pipe are connected to the partition. The water inlet pipe communicates with the inner cavity, and the feeding pipe communicates with the outer cavity. The purification tank also includes: An electric motor is fixedly installed on the top of the purification tank, and one end of the output shaft of the electric motor is fixedly connected to the rotating shaft; The scraping mechanism installed on the rotating frame has its output end in contact with the surface of the second filter screen. The scraping mechanism can scrape off the solid waste on the second filter screen by moving relative to the second filter screen. The scraping mechanism includes multiple reciprocating screws and multiple scraper plates. The multiple reciprocating screws are rotatably connected to a rotating frame, and the multiple scraper plates are slidably connected to the rotating frame. The reciprocating screws and scraper plates are threaded together. One side of each scraper plate contacts the side of the second filter screen along its rotation direction. Each end of the multiple reciprocating screws that passes through a transverse partition is fixedly connected to a driven gear. The transverse partition has openings for the reciprocating screws to move. A main gear is fixedly connected to the top of the transverse partition by a fixing rod. The axis of the main gear coincides with the axis of the rotating shaft. The multiple driven gears are meshed with the main gear.

2. The aquaculture water purification device according to claim 1, characterized in that, A sealing plate is fixedly connected to the rotating shaft. The outer diameter of the sealing plate is the same as the diameter of the opening. The sealing plate has through holes for multiple reciprocating lead screws to pass through.

3. The aquaculture water purification device according to claim 1, characterized in that, It also includes a stirring mechanism and a linkage mechanism. The stirring mechanism is installed on the transverse partition, and one end of the stirring mechanism extends into the outer cavity. The stirring mechanism is used to stir the aquaculture water. The linkage mechanism is connected between the stirring mechanism and the rotating shaft. The rotating shaft can drive the stirring mechanism to rotate through the linkage mechanism.

4. The aquaculture water purification device according to claim 3, characterized in that, The stirring mechanism includes multiple stirring shafts rotatably connected to the transverse partition. Each of the multiple stirring shafts has a number of stirring plates fixedly connected to one end extending into the outer cavity. A gear ring is rotatably connected inside the purification tank. Each of the multiple stirring shafts has a transmission gear fixedly connected to it, and each of the multiple transmission gears meshes with the gear ring.

5. The aquaculture water purification device according to claim 4, characterized in that, The linkage mechanism includes two sprockets, which are fixedly connected to the rotating shaft and the stirring shaft respectively, and a chain is connected between the two sprockets for transmission.

6. The aquaculture water purification device according to claim 4, characterized in that, It also includes a sludge scraping assembly, which includes multiple connecting plates, all of which are fixedly connected to the bottom of the toothed ring. The bottom of the multiple connecting plates is fixedly connected to the same rotating ring, and multiple sludge scrapers are fixedly connected to the inner side of the rotating ring. All of the multiple sludge scrapers are in contact with the inner bottom of the purification tank.

7. The aquaculture water purification device according to claim 1, characterized in that, It also includes a filter, which includes a filter tube, one end of which is threaded to a drain pipe and the other end of which is inserted into the interior of the drain pipe. An inclined No. 1 filter screen is provided inside the filter tube.

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