A circulating water filtration device for shrimp farming

Abstract

This invention relates to the field of aquaculture recirculating water filtration technology, specifically a recirculating water filtration device for shrimp farming. It includes a liquid exchange assist mechanism, an active filtration mechanism mounted on the liquid exchange assist mechanism, an aeration filtration mechanism located outside the liquid exchange assist mechanism, and an air supply component mounted on the aeration filtration mechanism. By introducing the aquatic water into the active filtration mechanism and then feeding it into the liquid exchange assist mechanism, the rotational kinetic energy generated by the water flow reverses and drives the anti-seepage sliding seat and filter element to vibrate at high frequency. The aquatic water undergoes forced filtration through the active filtration mechanism, and the filtered impurities are temporarily stored at the bottom of the filtration tank through the gaps in the tilting movable plate. The reset movable plate also provides anti-seepage protection for the stored impurities. As impurities accumulate, excess impurities are effectively squeezed out by the movable plate, thus achieving automatic discharge of impurities after water filtration and reducing maintenance and cleaning costs.

Description

Technical Field

[0001] This invention relates to the field of aquaculture recirculating water filtration technology, specifically a recirculating water filtration device for shrimp farming. Background Technology

[0002] Shrimp farming recirculating aquaculture system treats wastewater generated in the aquaculture ponds through a series of water treatment units, and the treated water can be reused. The water treatment units include physical filtration, biological filtration, disinfection, oxygenation, temperature control and other treatment facilities, thereby solving the problem of low water resource utilization.

[0003] Although aquaculture recirculating water treatment systems are becoming increasingly sophisticated, in actual use, these systems have high operating costs. They not only occupy too much space, but also suffer from significant losses in the multi-stage filtration system. In particular, the operating losses of the filtration devices in the multi-stage filtration facilities increase with the accumulation of dirt, and subsequent maintenance is inconvenient.

[0004] Therefore, a circulating water filtration device for shrimp farming was designed to reduce the overall cost of circulating water treatment in shrimp farming. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted in this invention is as follows:

[0007] A circulating water filtration device for shrimp farming includes a liquid exchange assist mechanism, an active filtration mechanism mounted on the liquid exchange assist mechanism, an aeration filtration mechanism mounted outside the liquid exchange assist mechanism, and an air supply component mounted on the aeration filtration mechanism. The liquid exchange assist mechanism includes two outer covers, a sealing gasket snapped onto the outer end of each outer cover, and a cap mounted on the outer end of each outer cover. A shaft is movably mounted inside the two outer covers, an impeller fixedly mounted outside the shaft, and an eccentric wheel mounted at one end of the shaft. A traction frame is movably mounted on the eccentric wheel. The active filtration mechanism includes a drain pipe mounted at the top of the two outer covers, a filtration tank mounted at the top of the drain pipe, a neck tube mounted at the top of the filtration tank, a filter element movably mounted inside the filtration tank, an anti-seepage slide mounted on the filter element and adapted to fit within a groove on the outside of the filtration tank, a first rivet mounted within the anti-seepage slide, an end plate fixedly mounted outside the first rivet, and a crossbar fixedly mounted within the end plate. The other end of the traction frame is movably mounted on the outer end of the crossbar.

[0008] In a preferred embodiment, the present invention can be further configured such that the filter element is composed of a trapezoidal screen and a rectangular insert plate, and the rectangular insert plate is adapted to extend through to the outside of the filtrate tank;

[0009] The active filtration mechanism also includes a partition plate fixedly installed on the outer end of the filter element, a movable plate movably installed on the partition plate via a shaft, a drain pipe fixedly installed on the top of the partition plate, a sub-arc pipe fixedly installed on the top of the movable plate, and a third spring fixedly connected to the partition plate and the movable plate.

[0010] The sub-arc tube is movably installed inside the mother arc tube;

[0011] The filtrate tank is movably installed with a T-shaped rod, a stopper fixedly installed at the bottom of the T-shaped rod and engaged in the bottom hole of the filtrate tank, and a first spring set outside the T-shaped rod and bearing pressure on the filtrate tank.

[0012] In a preferred embodiment, the present invention may be further configured such that the fluid exchange assist mechanism further includes a drive pulley fixedly installed at the other end of the shaft and a first bolt and a second bolt installed inside the outer cover;

[0013] The aeration filtrate mechanism includes a beam plate installed outside one of the outer covers, an aeration chamber installed at the other end of the beam plate, a base fixedly installed at the bottom of the aeration chamber, a first transmission belt fixedly installed at the top of the aeration chamber, a transmission pulley movably installed inside the beam plate, an end shaft fixedly installed inside the transmission pulley and extending into the inner cavity of the aeration chamber, a first transmission belt connected to the transmission pulley, a core tube installed inside the base, and an agitator installed outside the core tube via bearings.

[0014] The other end of the first transmission belt is connected to the drive pulley.

[0015] In a preferred embodiment, the present invention may be further configured as follows: the aeration filtrate mechanism further includes a protective device installed on the top of the aeration chamber and located on the bottom surface of the first transmission belt, and the top end of the core tube is adapted to penetrate into the interior of the protective device, an air pipe fixedly installed on the top of the first transmission belt, a top plug movably installed on the top of the air pipe, and a fourth spring disposed outside the top plug and pressed on the air pipe.

[0016] An exhaust port is provided at the top of the air pipe.

[0017] In a preferred embodiment, the present invention may be further configured as follows: a cylindrical cavity is provided inside the core tube, and a plurality of evenly distributed slots are provided at the bottom end of the core tube, a bottom plug head is fixedly installed at the bottom of the cylindrical cavity, and a fifth spring is fixedly installed at the top of the bottom plug head.

[0018] In a preferred embodiment, the present invention can be further configured such that the stirring component is welded together with a sleeve, a ring gear, two wheel disks and multiple stirring blades, and the deflection gear at the inner end of the end shaft is adapted to mesh with the ring gear.

[0019] In a preferred embodiment, the present invention may be further configured as follows: the air supply assembly includes two legs fixedly mounted on the first transmission belt, a wind shield fixedly mounted on the top of the two legs, a mesh plate fixedly mounted on the top of the wind shield, a vertical pipe movably mounted inside the wind shield, and a fan blade fixedly mounted on the top of the vertical pipe.

[0020] The air supply assembly also includes a secondary clamping plate fixedly installed on the beam plate, a main clamping plate fixedly installed on the first transmission belt, a linkage vertical shaft movably installed in the secondary clamping plate and the main clamping plate, and a second transmission belt that is transmissionally connected to the linkage vertical shaft and the vertical pipe.

[0021] In a preferred embodiment, the present invention can be further configured such that: the interior of the vertical tube has a cavity, and the outer wall of the vertical tube has a slot communicating with the inner cavity of the wind hood; the bottom end of the vertical tube is connected to a flexible hose, and the other end of the flexible hose is connected to the top end of the core tube.

[0022] In a preferred embodiment, the present invention may be further configured such that the filtrate tank, the two outer covers, and the two caps are all made of ceramic material to prevent the accumulation of dirt in the water on the rough metal surface.

[0023] In a preferred embodiment, the present invention may be further configured such that the active filtration mechanism further includes a gasket fixedly installed on the filtration tank, a vertical rod fixedly installed inside the gasket, and a second spring disposed outside the vertical rod and bearing pressure on the gasket and the anti-seepage slide.

[0024] The vertical rod is adapted to penetrate into the anti-seepage sliding seat.

[0025] By adopting the above technical solution, the beneficial effects achieved by the present invention are as follows:

[0026] 1. This invention introduces aquatic organisms into an active filtration mechanism, and then feeds them into a liquid exchange and energy-boosting mechanism along with the active filtration mechanism. The rotational kinetic energy generated by the water flow drives the anti-seepage slide and filter element to vibrate at high frequency. The aquatic water is then subjected to forced filtration by the active filtration mechanism, and the filtered waste is temporarily stored at the bottom of the filtration tank through the gaps of the side-tilting movable plate. The reset movable plate also provides anti-seepage protection for the stored waste. As the amount of waste increases, the excess waste is effectively squeezed out by the movable plate, thereby achieving automatic discharge of waste after water filtration and reducing maintenance and cleaning costs.

[0027] 2. This invention installs an aeration and filtration mechanism on the outside of the liquid exchange and energy-boosting mechanism. When the aquaculture water that has passed through the liquid exchange and energy-boosting mechanism is transferred to the inner cavity of the aeration and filtration mechanism, the rotating stirring component powered by the mechanism will efficiently stir the water in the aeration chamber, thereby accelerating the degradation rate of impurities in the water.

[0028] 3. This invention uses a transmission pulley to drive the linkage vertical shaft, and the second transmission belt connected to the linkage vertical shaft will help the vertical tube and fan blades rotate at high speed. Eventually, outside air will be actively drawn into the core tube, and the continuously input airflow will aerate the water during the stirring process through the groove at the bottom of the core tube, thereby improving the efficiency of solidifying impurities and water layers. Attached Figure Description

[0029] Figure 1 This is a schematic diagram illustrating the use of the present invention;

[0030] Figure 2 This is a bottom view diagram of the present invention;

[0031] Figure 3 This is a schematic diagram of the aeration filtrate mechanism of the present invention;

[0032] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0033] Figure 5 This is an exploded schematic diagram of the aeration filtrate mechanism and air delivery component of the present invention;

[0034] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle;

[0035] Figure 7 This is a cross-sectional schematic diagram of the core tube of the present invention;

[0036] Figure 8 This is a partial schematic diagram of the present invention;

[0037] Figure 9 This is an exploded view of the active filtration mechanism of the present invention;

[0038] Figure 10 For the present invention Figure 9 A partial diagram of the explosion;

[0039] Figure 11 This is an exploded schematic diagram of the fluid exchange assist mechanism of the present invention;

[0040] Figure 12 For the present invention Figure 11 A partial diagram of the explosion.

[0041] Figure label:

[0042] 100. Fluid changing assist mechanism; 110. Outer cover; 120. Sealing cap; 130. First bolt; 140. Second bolt; 150. Sealing gasket; 160. Shaft; 1601. Impeller; 1602. Eccentric wheel; 1603. Drive pulley; 170. Traction frame;

[0043] 200. Active filtration mechanism; 210. Filtration tank; 2101. Neck tube; 2102. Drain pipe; 2103. T-shaped rod; 2104. Plug; 2105. First spring; 220. Gasket; 2201. Vertical rod; 2202. Second spring; 230. Leak-proof slide; 240. Filter element; 2401. Partition plate; 2402. Main arc tube; 2403. Movable plate; 2404. Sub-arc tube; 2405. Third spring; 250. End plate; 2501. First rivet; 2502. Horizontal rod;

[0044] 300. Aeration filtrate mechanism; 310. Aeration chamber; 3101. Base; 3102. Beam plate; 3103. Transmission pulley; 3104. End shaft; 3105. First transmission belt; 3106. Protective gear; 320. Air pipe; 3201. Top plug; 3202. Fourth spring; 330. Core tube; 3301. Bottom plug; 3302. Fifth spring; 340. Agitator;

[0045] 400. Air supply assembly; 410. Support leg; 4101. Fan cover; 4102. Mesh plate; 420. Vertical pipe; 4201. Fan blade; 430. Second transmission belt; 440. Linkage vertical shaft; 4401. Main clamping plate; 4402. Secondary clamping plate. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0047] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0048] The following describes, with reference to the accompanying drawings, some embodiments of a circulating water filtration device for shrimp farming provided by the present invention. Example 1:

[0049] Combination Figures 1 to 12 As shown, the present invention provides a circulating water filtration device for shrimp farming, including a liquid exchange and energy-boosting mechanism 100, an active filtration mechanism 200 disposed on the liquid exchange and energy-boosting mechanism 100, an aeration filtration mechanism 300 disposed outside the liquid exchange and energy-boosting mechanism 100, and an air supply component 400 installed on the aeration filtration mechanism 300.

[0050] The fluid exchange assist mechanism 100 includes two outer covers 110, a sealing gasket 150 snapped onto the outer end of the outer cover 110 and a cover 120 installed on the outer end of the outer cover 110, a shaft 160 movably installed inside the two outer covers 110, an impeller 1601 fixedly installed outside the shaft 160 and an eccentric wheel 1602 installed on one end of the shaft 160.

[0051] A traction frame 170 is movably mounted on the eccentric wheel 1602;

[0052] The active filtration mechanism 200 includes a drain pipe 2102 installed at the top of two outer covers 110, a filtration tank 210 installed at the top of the drain pipe 2102, a neck tube 2101 installed at the top of the filtration tank 210, a filter element 240 movably installed inside the filtration tank 210, and an anti-seepage slide 230 installed on the filter element 240 and adapted to fit into a sliding groove on the outside of the filtration tank 210, a first rivet 2501 installed in the anti-seepage slide 230, and a rivet 2501 fixedly installed in the second... The end plate 250 outside the rivet 2501, the crossbar 2502 fixedly installed inside the end plate 250, the partition 2401 fixedly installed on the outer end of the filter element 240, the movable plate 2403 movably installed on the partition 2401 via the shaft, the drain pipe 2102 fixedly installed on the top of the partition 2401, the sub-arc pipe 2404 fixedly installed on the top of the movable plate 2403, and the third spring 2405 fixedly connected to the partition 2401 and the movable plate 2403;

[0053] The sub-arc tube 2404 is movably installed inside the mother arc tube 2402;

[0054] A T-shaped rod 2103 is movably installed inside the filtrate tank 210, a plug 2104 is fixedly installed at the bottom end of the T-shaped rod 2103 and snapped into the bottom hole of the filtrate tank 210, and a first spring 2105 is provided outside the T-shaped rod 2103 and bears pressure on the filtrate tank 210.

[0055] The other end of the traction frame 170 is movably mounted on the outer end of the crossbar 2502;

[0056] The filter element 240 consists of a trapezoidal screen and a rectangular insert plate, with the rectangular insert plate extending through to the outside of the filtrate tank 210.

[0057] When the aquaculture water first enters the two neck pipes 2101, the aquaculture water that initially enters the inner cavity of the filtrate tank 210 is filtered by the filter element 240 and then enters the inner cavity of the liquid exchange assist mechanism 100 through the drain pipe 2102. At this time, the impeller 1601 and shaft 160, which are rotated by the aquaculture water, together with the eccentric wheel 1602 and the drive pulley 1603, provide constant kinetic energy for the subsequent active filtration operation of the active filtrate mechanism 200 and the cleaning of the aquaculture water after filtration in the aeration filtrate mechanism 300.

[0058] When the wastewater in the aquaculture pond passes through the inner cavity of the filter tank 210, the water that is forcibly filtered by the filter element 240, the partition 2401 and the movable plate 2403 will be smoothly discharged. The filtered impurities and dirt will exert a downward lateral force on the movable plate 2403. Finally, the impurities and dirt will be compressed at the bottom of the inner cavity of the filter tank 210 by the reset movable plate 2403. As the amount of impurities and dirt increases, the impurities and dirt squeezed by the reset movable plate 2403 can push the stopper 2104 outward.

[0059] As the stopper 2104 is squeezed out, impurities and dirt are quickly discharged under pressure through the holes at the bottom of the stopper 2104 and the filtrate tank 210. Example 2:

[0060] Combination Figure 3 , Figure 4 as well as Figure 11 As shown, based on Embodiment 1, the fluid exchange assist mechanism 100 further includes a drive pulley 1603 fixedly installed at the other end of the shaft 160, and a first bolt 130 and a second bolt 140 installed inside the outer cover 110.

[0061] The aeration filtrate mechanism 300 includes a beam plate 3102 installed outside one of the outer covers 110, an aeration chamber 310 installed at the other end of the beam plate 3102, a base 3101 fixedly installed at the bottom of the aeration chamber 310, a first transmission belt 3105 fixedly installed at the top of the aeration chamber 310, a transmission pulley 3103 movably installed inside the beam plate 3102, an end shaft 3104 fixedly installed inside the transmission pulley 3103 and extending into the inner cavity of the aeration chamber 310, and a first transmission belt 31 connected to the transmission pulley 3103. 05, a core tube 330 installed inside the base 3101, an agitator 340 installed outside the core tube 330 via a bearing, a guard 3106 installed on the top of the aeration chamber 310 and located on the bottom surface of the first transmission belt 3105, with the top end of the core tube 330 adapted to penetrate into the interior of the guard 3106, an air pipe 320 fixedly installed on the top of the first transmission belt 3105, a top plug 3201 movably installed on the top of the air pipe 320, and a fourth spring 3202 provided outside the top plug 3201 and pressed on the air pipe 320;

[0062] The core tube 330 has a cylindrical cavity inside, and the bottom end of the core tube 330 has multiple evenly distributed slots. A bottom plug 3301 is fixedly installed at the bottom of the cylindrical cavity, and a fifth spring 3302 is fixedly installed at the top of the bottom plug 3301.

[0063] The stirring component 340 is welded together with a sleeve, a ring gear, two wheel discs and multiple stirring blades, and the deflection gear at the inner end of the end shaft 3104 is adapted to mesh with the ring gear.

[0064] The other end of the first transmission belt 3105 is connected to the drive pulley 1603.

[0065] An exhaust port is provided at the top of the trachea 320.

[0066] Preferably, the transmission pulley 3103 is installed inside the beam plate 3102 via bearings. When the impeller 1601 is pushed by water, the shaft 160, in conjunction with the drive pulley 1603, will drive the first transmission belt 3105. The first transmission belt 3105 will assist the rotation of the transmission pulley 3103 and the end shaft 3104. At this time, the transmission pulley 3103 will synchronously drive the linkage vertical shaft 440, and the end shaft 3104 will also drive the agitator 340 to rotate. At this time, the agitator 340 efficiently agitates the aquaculture water entering the aeration chamber 310, and at the same time, it can cooperate with the gas input by the air supply component 400 to aerate the aquaculture water being agitated, so as to improve the degradation speed of impurities in the aquaculture water. Example 3:

[0067] Combination Figures 5 to 7 As shown, based on Embodiment 1, the air supply assembly 400 includes two legs 410 fixedly installed on the first transmission belt 3105, a wind cover 4101 fixedly installed on the top of the two legs 410, a mesh plate 4102 fixedly installed on the top of the wind cover 4101, a vertical pipe 420 movably installed inside the wind cover 4101, and a fan blade 4201 fixedly installed on the top of the vertical pipe 420.

[0068] The air supply assembly 400 also includes a secondary clamping plate 4402 fixedly installed on the beam plate 3102, a main clamping plate 4401 fixedly installed on the first transmission belt 3105, a linkage vertical shaft 440 movably installed in the secondary clamping plate 4402 and the main clamping plate 4401, and a second transmission belt 430 that is transmissionally connected to the linkage vertical shaft 440 and the vertical pipe 420.

[0069] The vertical tube 420 has an internal cavity, and the outer wall of the vertical tube 420 has a slot that connects to the inner cavity of the hood 4101. The bottom end of the vertical tube 420 is connected to a flexible hose, and the other end of the flexible hose is connected to the top end of the core tube 330.

[0070] Preferably, two studs are fixedly installed on the top of the first transmission belt 3105, and nuts are installed on the studs. Two support legs 410 are inserted into the two studs, and the nuts are used to lock the bottom of the support legs 410.

[0071] Among them, a filter membrane is fixedly installed on the mesh plate 4102 for filtering dust from the actively absorbed air;

[0072] Specifically, as air is introduced into the vertical pipe 420 through the inner cavity of the hood 4101, the air pressure introduced into the inner cavity of the core tube 330 through the hose will compress the fifth spring 3302 downwards. The fifth spring 3302 will expose the groove at the bottom of the core tube 330. At this time, the continuously introduced airflow will aerate the stirred aquaculture water along the groove at the bottom of the core tube 330. Example 4:

[0073] Combination Figures 8 to 12 As shown, in the above embodiment, the active filtration mechanism 200 further includes a gasket 220 fixedly installed on the filtration tank 210, a vertical rod 2201 fixedly installed inside the gasket 220, and a second spring 2202 disposed outside the vertical rod 2201 and pressed against the gasket 220 and the anti-seepage slide 230.

[0074] The vertical rod 2201 is adapted to penetrate into the seepage-proof sliding seat 230;

[0075] The filter tank 210, the two outer covers 110 and the two caps 120 are all made of ceramic material to prevent dirt in the water from accumulating on the rough metal surface.

[0076] Preferably, the top of the anti-seepage slide 230 is adapted to penetrate into the slot formed by the gasket 220 and the filter tank 210, and the gasket 220 is used to provide effective stabilization protection for the anti-seepage slide 230 during lifting and lowering. As the eccentric wheel 1602 drives the traction frame 170 to reciprocate and extend, the crossbar 2502 and end plate 250 movably installed at the top of the traction frame 170 will push the anti-seepage slide 230 to maintain a constant speed for lifting and sliding. The anti-seepage slide 230 will also drive the filter element 240 to perform forced filtration of the aquaculture water entering the inner cavity of the filter tank 210.

[0077] The working principle and usage process of this invention are as follows: the external pipe is connected to the top of the neck pipe 2101 in advance, and the external pipe is fixed to the neck pipe 2101 with bolts. The drain pipe at the top of the aeration chamber 310 is connected to the water purification equipment in the next stage.

[0078] As shrimp farming water enters the neck tube 2101 through the external pipe, it is transferred to the inner cavity of the filter tank 210. The water entering the filter tank 210 is filtered by the filter element 240 and then flows through the drain pipe 2102 into the inner cavity of the liquid exchange assist mechanism 100. Ultimately, the water flow drives the impeller 1601 and shaft 160 to rotate. After the eccentric wheel 1602 rotates, the traction frame 170, movably mounted on the eccentric wheel 1602, pushes the crossbar 2502 and end plate 250 to reciprocate upwards and downwards. The first rivet 2501 fixed to the anti-seepage sliding seat 230 on the end plate 250 will push the filter element 240 to vibrate at high frequency along the inner cavity of the filtrate tank 210. With the pressure of the water flow, the dirt screened by the filter element 240 will fall rapidly along one side of the side-tilting movable plate 2403. Finally, the dirt will be stored in the gap formed by the movable plate 2403 and the filtrate tank 210. As the dirt is squeezed and increases, the dirt squeezed by the falling movable plate 2403 will squeeze out the stopper 2104, thereby realizing the automatic discharge of dirt.

[0079] The drive pulley 1603 also drives the first drive belt 3105, and the other end of the first drive belt 3105 drives the drive pulley 3103 and the end shaft 3104 to rotate. The deflection gear at the inner end of the end shaft 3104 assists in rotating the agitator 340. The agitator 340 is mounted on the outside of the core tube 330 through bearings. Therefore, the driven agitator 340 will rotate at high speed along the middle of the inner cavity of the aeration chamber 310. The sewage input into the inner cavity of the aeration chamber 310 through the liquid exchange assist mechanism 100 can be efficiently agitated and achieve effective aeration.

[0080] At the same time, the teeth on the inner side of the transmission pulley 3103 will also drive the linkage vertical shaft 440, and the top of the linkage vertical shaft 440 will drive the second transmission belt 430. At this time, the other end of the second transmission belt 430 will drive the vertical pipe 420 and the fan blade 4201. Finally, the vertical pipe 420 and the fan blade 4201 will draw in outside air. After being filtered by the mesh plate 4102, the air will be transferred to the inner cavity of the core tube 330 through the hose at the bottom of the vertical pipe 420. Finally, the filtered gas will aerate the water being stirred from the slot at the bottom of the core tube 330, thereby accelerating the purification efficiency of impurities in the water.

[0081] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A circulating water filtration device for shrimp farming, comprising a liquid exchange assist mechanism (100), characterized in that, It also includes an active filtration mechanism (200) disposed on the liquid exchange assist mechanism (100), an aeration filtration mechanism (300) disposed outside the liquid exchange assist mechanism (100), and an air supply assembly (400) mounted on the aeration filtration mechanism (300); the liquid exchange assist mechanism (100) includes two outer covers (110), a sealing gasket (150) snapped onto the outer end of the outer cover (110), and a cover (120) mounted on the outer end of the outer cover (110), a shaft (160) movably mounted inside the two outer covers (110), an impeller (1601) fixedly mounted outside the shaft (160), and an eccentric wheel (1602) mounted on one end of the shaft (160); a traction frame (170) is movably mounted on the eccentric wheel (1602); the... The active filtration mechanism (200) includes a drain pipe (2102) installed at the top of two outer covers (110), a filtration tank (210) installed at the top of the drain pipe (2102), a neck tube (2101) installed at the top of the filtration tank (210), a filter element (240) movably installed inside the filtration tank (210), and an anti-seepage slide (230) installed on the filter element (240) and adapted to fit into the slide groove on the outside of the filtration tank (210), a first rivet (2501) installed in the anti-seepage slide (230), an end plate (250) fixedly installed outside the first rivet (2501), and a crossbar (2502) fixedly installed in the end plate (250); the other end of the traction frame (170) is movably installed on the outer end of the crossbar (2502); The filter element (240) is composed of a trapezoidal screen and a rectangular insert plate, and the rectangular insert plate is adapted to extend through to the outside of the filtrate tank (210); the active filtrate mechanism (200) also includes a partition plate (2401) fixedly installed at the outer end of the filter element (240), a movable plate (2403) movably installed on the partition plate (2401) via a shaft, a drain pipe (2102) fixedly installed on the top of the partition plate (2401), a sub-arc pipe (2404) fixedly installed on the top of the movable plate (2403), and a fixed... A third spring (2405) is connected to the partition plate (2401) and the movable plate (2403); the sub-arc tube (2404) is movably installed inside the mother arc tube (2402); a T-shaped rod (2103) is movably installed inside the filtrate tank (210), a plug (2104) is fixedly installed at the bottom end of the T-shaped rod (2103) and snapped into the bottom hole of the filtrate tank (210), and a first spring (2105) is set outside the T-shaped rod (2103) and pressurized on the filtrate tank (210).

2. The circulating water filtration device for shrimp farming according to claim 1, characterized in that, The liquid exchange assist mechanism (100) further includes a drive pulley (1603) fixedly installed at the other end of the shaft (160) and a first bolt (130) and a second bolt (140) installed inside the outer cover (110); the aeration filtrate mechanism (300) includes a beam plate (3102) installed outside one of the outer covers (110), an aeration chamber (310) installed at the other end of the beam plate (3102), a base (3101) fixedly installed at the bottom of the aeration chamber (310), and a first transmission fixedly installed at the top of the aeration chamber (310). The belt (3105), the drive pulley (3103) movably installed in the beam plate (3102), the end shaft (3104) fixedly installed in the drive pulley (3103) and extending into the cavity of the aeration chamber (310), the first drive belt (3105) drively connected to the drive pulley (3103), the core tube (330) installed inside the base (3101) and the agitator (340) installed outside the core tube (330) by bearings; the other end of the first drive belt (3105) is drively connected to the drive pulley (1603).

3. The circulating water filtration device for shrimp farming according to claim 2, characterized in that, The aeration filtrate mechanism (300) also includes a protective device (3106) installed on the top of the aeration chamber (310) and located on the bottom surface of the first transmission belt (3105), and the top end of the core tube (330) is adapted to penetrate into the interior of the protective device (3106), an air pipe (320) fixedly installed on the top of the first transmission belt (3105), a top plug (3201) movably installed on the top of the air pipe (320), and a fourth spring (3202) set outside the top plug (3201) and pressed on the air pipe (320); the top of the air pipe (320) is provided with an exhaust hole.

4. The circulating water filtration device for shrimp farming according to claim 2, characterized in that, The core tube (330) has a cylindrical cavity inside, and the bottom end of the core tube (330) has a plurality of evenly distributed slots, a bottom plug (3301) fixedly installed at the bottom of the cylindrical cavity, and a fifth spring (3302) fixedly installed at the top of the bottom plug (3301).

5. A circulating water filtration device for shrimp farming according to claim 2, characterized in that, The stirring component (340) is welded together with a sleeve, a ring gear, two wheel discs and multiple stirring blades, and the deflection gear at the inner end of the end shaft (3104) is adapted to mesh with the ring gear.

6. The circulating water filtration device for shrimp farming according to claim 1, characterized in that, The air delivery assembly (400) includes two legs (410) fixedly mounted on the first transmission belt (3105), a wind shield (4101) fixedly mounted on the top of the two legs (410), a mesh plate (4102) fixedly mounted on the top of the wind shield (4101), a vertical pipe (420) movably mounted inside the wind shield (4101), and a fan blade (4201) fixedly mounted on the top of the vertical pipe (420); the air delivery assembly (400) also includes a secondary clamping plate (4402) fixedly mounted on the beam plate (3102), a main clamping plate (4401) fixedly mounted on the first transmission belt (3105), a linkage vertical shaft (440) movably mounted in the secondary clamping plate (4402) and the main clamping plate (4401), and a second transmission belt (430) drivingly connected to the linkage vertical shaft (440) and the vertical pipe (420).

7. A circulating water filtration device for shrimp farming according to claim 6, characterized in that, The vertical tube (420) has a cavity inside, and the outer wall of the vertical tube (420) has a slot that communicates with the cavity of the wind cover (4101). The bottom end of the vertical tube (420) is connected to a flexible hose, and the other end of the flexible hose is connected to the top end of the core tube (330).

8. A circulating water filtration device for shrimp farming according to claim 1, characterized in that, The filter tank (210), the two outer covers (110) and the two caps (120) are all made of ceramic material to prevent dirt in the water from accumulating on the rough metal surface.

9. A circulating water filtration device for shrimp farming according to claim 1, characterized in that, The active filtration mechanism (200) further includes a gasket (220) fixedly installed on the filtrate tank (210), a vertical rod (2201) fixedly installed inside the gasket (220), and a second spring (2202) disposed outside the vertical rod (2201) and pressed on the gasket (220) and the anti-seepage slide (230); the vertical rod (2201) is adapted to penetrate into the anti-seepage slide (230).

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