Fish pond culture tail water purifying and conditioning equipment

Abstract

The invention discloses a fishpond breeding tail water purifying and conditioning device, and belongs to the technical field of sewage purifying treatment, large-particle impurities in tail water are efficiently intercepted through a circularly-driven residue filtering belt, centralized storage and convenient cleaning of the impurities are achieved in cooperation with a collecting box, and the situation that the filtering progress is affected by impurity accumulation is avoided; the backwashing assembly synchronously runs with the residue filtering assembly by means of a transmission mechanism, blocking impurities in filtering holes can be accurately removed through the dual effects of sweeping of a stirring brush and flushing of water spraying holes, self-cleaning of the residue filtering belt is achieved, the problems that a traditional residue filtering structure is prone to being blocked and needs to be stopped for disassembly and cleaning are solved, a water receiving hopper achieves accurate gathering of pretreated tail water and backwashing sewage, and the filtering efficiency is improved. The tail water conveying continuity is guaranteed, the preliminary solid-liquid separation efficiency of the tail water is improved, the service life of the residue filtering assembly is prolonged, the traditional manual disassembly and simple direct spraying flushing modes are abandoned, the blockage problem is prevented from being repeatedly generated, it is guaranteed that equipment can continuously run for a long time, and the maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of wastewater purification and treatment technology, specifically to a purification and conditioning device for fishpond aquaculture wastewater. Background Technology

[0002] With the large-scale and intensive development of aquaculture, eels, as a high-value-added aquaculture species, have seen their aquaculture industry scale continue to expand and their output steadily increase. However, the special model of eel farming has made the disorderly discharge of aquaculture wastewater more prominent, becoming a key bottleneck restricting the green and sustainable development of the eel farming industry and posing a serious threat to the surrounding water environment, resulting in a large amount of mucus pollutants in the aquaculture wastewater.

[0003] Currently, in the process of treating fishpond aquaculture wastewater, equipment is prone to clogging due to the accumulation of mucus and high concentrations of impurities. The filtration mechanisms of existing purification equipment mostly adopt a fixed structure design, and the cleaning methods are mainly manual disassembly and rinsing or simple direct spray backwashing. Manual disassembly and rinsing requires stopping the equipment operation, which consumes a lot of manpower and time. Frequent disassembly can damage filter components and increase operation and maintenance costs. Adding simple direct spray backwashing inside the equipment creates rinsing dead zones, and the dirt still remains inside the equipment after cleaning, resulting in poor cleaning effect and easy recurrence of clogging problems. Summary of the Invention

[0004] The purpose of this invention is to provide a fishpond aquaculture wastewater purification and conditioning device to solve the problems mentioned in the background art. The filter mechanism of the existing purification equipment mostly adopts a fixed structure design, and the cleaning method is mainly manual disassembly and rinsing or simple direct spray backwashing. Manual disassembly and rinsing requires stopping the operation of the equipment, which consumes a lot of manpower and time. Frequent disassembly can easily damage the filter components and increase the operation and maintenance costs. Adding simple direct spray backwashing inside the equipment has the problem of rinsing dead corners.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A fishpond aquaculture wastewater purification and conditioning device includes a purification tank. A medicine tank is located on one side of the tank, and a support leg is fixed to its bottom. The medicine tank is fixed to the support leg, and a dosing assembly is installed on the medicine tank. The top of the dosing assembly penetrates the top of the purification tank and communicates with its interior. A support frame is fixed at the upper part of the tank's interior. Two through holes are respectively opened on both sides of the support frame. A filter cake assembly is installed inside the support frame, penetrating through the through holes. One end of the filter cake assembly penetrates the purification tank and is fixed with a first motor, which is installed outside the tank. Backwashing components are installed on both sides inside the filter cake assembly. One end of the flushing assembly penetrates the purification tank and is connected to a flow guiding assembly. The other end of the flow guiding assembly penetrates the purification tank and is fitted with a sleeve and a switching assembly. Inside the purification tank, a partition is located below the flow guiding assembly. A multi-stage filter element is connected to the bottom of the partition. A support plate is installed at the bottom of the multi-stage filter element. The support plate is fixed inside the purification tank at a lower position. The bottom of the support plate is fixed to the sleeve. Four water passage holes are respectively opened in the support plate and the sleeve. The two water passage holes in the middle are connected to the cavity inside the multi-stage filter element, and the water passage holes on both sides are located between the multi-stage filter element and the inner wall of the purification tank. The switching assembly is sleeved in the sleeve, and one end penetrates the sleeve and extends to the outside of the purification tank.

[0007] As a further embodiment of the present invention, an ultraviolet germicidal lamp is installed on the top of the purification tank, and several drainage holes are opened in the extension portions on both sides of the bottom of the support frame and a collection box is attached above it. A drainage net is provided at the bottom of the collection box, and the collection box is inserted into the socket outside the purification tank.

[0008] As a further embodiment of the present invention, the dosing assembly includes a water pump mounted on a support leg. The water pump has an inlet and an outlet connected to a water pumping pipe and a guide pipe, respectively. The other end of the guide pipe is connected to a turnover box, and an inlet pipe is connected to the turnover box. The other end of the inlet pipe passes through the top of the purification tank and communicates with its interior. One side of the turnover box is connected to a filling pipe, and the other end of the filling pipe is connected to a chemical pump mounted on a chemical tank. The inlet of the chemical pump is connected to a chemical extraction pipe, which extends to the bottom of the chemical tank.

[0009] As a further embodiment of the present invention, the filter cake assembly includes a filter cake belt, which is disposed through through holes opened on both sides of the support frame. The filter cake belt has a plurality of filter holes. The filter cake belt is designed in a U-shape and two drive rollers are respectively sleeved on both sides inside. The end of one drive roller passes through the purification tank and is fixed to the output shaft of the first motor. The ends of the two drive rollers on the same side are rotatably connected to ear plates. The ear plates are fixed to one side of the support frame. The backwashing assembly is located between the corresponding two drive rollers.

[0010] As a further embodiment of the present invention, the backwashing assembly includes a hollow shaft with several water spray holes on its exterior and communicating with an internal cavity. Several agitator brushes are provided on the exterior of the hollow shaft and contact one side of the inner wall of the filter belt. Flexible filaments in the agitator brushes penetrate the filter holes. One end of the hollow shaft passes through an ear plate and is fixed with a transmission mechanism. The transmission mechanism consists of a transmission belt and two transmission wheels sleeved together. The two transmission wheels are respectively fixed to the ends of the hollow shaft and the transmission roller. The other end of the hollow shaft passes through the purification tank and is equipped with a rotary joint. A water guide pipe is connected to the rotary joint, and the ends of the two water guide pipes are connected to the top of the flow guiding assembly.

[0011] As a further embodiment of the present invention, the flow guiding assembly includes a water receiving hopper, which is installed inside the purification tank and located below the support frame. The bottom end of the water receiving hopper is connected to a booster pump, and the outlet end of the booster pump is connected to a connecting pipe and a branch pipe, respectively. The other end of the branch pipe passes through the purification tank and is connected to the ends of the two water guiding pipes. A valve is installed on the outside of the branch pipe, and the bottom end of the connecting pipe passes through the partition box support plate and is connected to the inside of the switching assembly.

[0012] As a further embodiment of the present invention, the switching component includes a rotating drum, which is rotatably connected inside a sleeve. A first water guide hole is provided at the top of the rotating drum near the end of the connecting pipe. The first water guide hole is connected to one of the water passage holes in the sleeve and the support plate. A second water guide hole is provided at the front of the rotating drum near the first water guide hole. The included angle between the first water guide hole and the second water guide hole is 90 degrees.

[0013] As a further embodiment of the present invention, the rotating drum has three drainage holes in the middle, and the included angle between two adjacent drainage holes is 90 degrees. The uppermost drainage hole is connected to the cavity inside the multi-stage filter element through a water passage. A drainage valve pipe is connected to the front drainage hole. One end of the drainage valve pipe is fixed outside the sleeve, and the other end extends to the outside of the purification tank. Two slag discharge holes are opened on the side of the rotating drum away from the connecting pipe. The two slag discharge holes are located at the front and bottom of the rotating drum, respectively. A slag discharge valve pipe is connected to the front slag discharge hole. The end of the slag discharge valve pipe is fixed outside the sleeve, and the other end extends to the outside of the purification tank. One end of the sleeve passes through the purification tank and is fixed with a rotating handle. A baffle plate is provided between the second water guide hole and the drainage hole and between the drainage hole and the slag discharge hole. The baffle plate is fixed to the inner wall of the rotating drum.

[0014] As a further embodiment of the present invention, the top of the multi-stage filter element is provided with a groove, and three wedge-shaped blocks are fixed on the inner wall of the groove. An auxiliary cleaning component is provided between the three wedge-shaped blocks. The auxiliary cleaning component includes a second motor, which is installed above the middle of the partition. The output shaft of the second motor passes through the partition and is fixedly connected to a turntable. The turntable is located in the groove and has sliding grooves on both sides. A slider is slidably connected inside the sliding groove. A striking wheel and a spring are respectively installed at both ends of the slider. The other end of the spring is fixed to one side of the inner wall of the sliding groove. The striking wheel contacts the inner wall of the groove and faces the inclined surface of the wedge-shaped block.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention utilizes a circulating filter cake belt to efficiently intercept large particulate impurities in the effluent. A collection box facilitates centralized collection and convenient cleaning of these impurities, preventing accumulation and ensuring smooth filtration. The backwashing component operates synchronously with the filter cake assembly via a transmission mechanism. The combined action of the brush cleaning and water spraying precisely removes blockages from the filter holes, achieving self-cleaning of the filter cake belt. This solves the problems of traditional filter cake structures being prone to clogging and requiring shutdown for disassembly and cleaning. The water receiving hopper precisely collects pre-treated effluent and backwash wastewater, allowing the backwashed wastewater to be reintegrated into the treatment process, preventing water waste and ensuring continuous effluent delivery. These three components work together to form a closed-loop pre-treatment system of interception, cleaning, and collection. This improves the initial solid-liquid separation efficiency of the effluent and extends the service life of the filter cake assembly. It eliminates the need for traditional manual disassembly and simple direct spraying, preventing recurring clogging issues, ensuring long-term continuous operation, and reducing maintenance costs.

[0017] 2. This invention allows for rapid switching between normal purification filtration and multi-stage filter cartridge backwashing and slag discharge modes simply by rotating the drum via a handle. Operation is simple and convenient, requiring no complex disassembly. In normal filtration mode, the drum guides the wastewater through the precise connection of the first water guide hole and the water passage hole, achieving deep purification. The sealing design of the baffle plate prevents unpurified wastewater from mixing into the clean water end, ensuring purification efficiency. In backwashing and slag discharge mode, the rotating drum, after rotation, blocks the original water flow channel through the misalignment of the first water guide hole, allowing the second water guide hole to guide the wastewater into the internal cavity of the multi-stage filter cartridge. Simultaneously, it connects the slag discharge hole with the multi-stage filter cartridge area. Utilizing the internal pressure difference of the multi-stage filter cartridge, the wastewater is forced to seep out in reverse, efficiently flushing impurities attached to the outside of the multi-stage filter cartridge. The baffle plate prevents wastewater containing impurities from being discharged through the drain hole, ensuring thorough slag discharge. This design eliminates the need for additional backwashing devices to maintain the multi-stage filter cartridges, simplifying the equipment structure and avoiding the reduction in purification efficiency caused by multi-stage filter cartridge clogging, thus ensuring the stability and durability of deep filtration.

[0018] 3. This invention uses a dosing component to dilute wastewater, combined with a transfer box design for mixing. The effluent pumped by the water pump and the conditioning agent pumped by the chemical pump are initially mixed in the transfer box. This effectively avoids the problem of violent local reactions caused by excessively high agent concentration, ensuring that the agent and effluent are evenly mixed. The evenly mixed agent can promote the efficient coagulation of suspended pollutants in the effluent into flocs, which not only improves the interception efficiency of the subsequent filter cake component for suspended impurities, but also reduces the filtration load of the subsequent multi-stage filter cartridges and extends the replacement cycle of the multi-stage filter cartridges. At the same time, the agent is precisely added to the effluent in the purification tank through the inlet pipe, realizing the orderly connection between dosing, pretreatment, and filtration processes, ensuring stable water quality conditioning effect, and providing a reliable guarantee for the final effluent purification to meet standards.

[0019] 4. This invention introduces water into the internal cavity of the multi-stage filter element through the second water guide hole and the water passage hole. The pressure inside the multi-stage filter element increases, and the tailwater can seep out from the inside of the multi-stage filter element, achieving the purpose of backwashing the multi-stage filter element. Next, the second motor drives the turntable to rotate in the groove at the top of the multi-stage filter element. The sliders in the sliding grooves on both sides of the turntable slide outward under the action of centrifugal force, so that the striking wheel contacts the inclined surface of the wedge block on the inner wall of the groove. As the turntable continues to rotate, the striking wheel slides along the inclined surface of the wedge block and is continuously squeezed. With the elastic reset action of the spring, the striking wheel repeatedly strikes the top of the multi-stage filter element. The vibration generated by the striking can loosen the impurities trapped inside the multi-stage filter element, avoiding the accumulation of impurities in the pores of the multi-stage filter element and causing blockage. Combined with the backwashing method, the cleaning effect of the multi-stage filter element is improved and the service life of the multi-stage filter element is extended. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the dosing assembly of the present invention;

[0023] Figure 3 This is a schematic diagram of a partial cross-section of the purification tank of the present invention;

[0024] Figure 4 This is a schematic diagram of the cross-section of the purification tank of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the present invention, showing the support frame and the collection box separated.

[0026] Figure 6 This is a schematic diagram of the filter cake assembly of the present invention;

[0027] Figure 7 This is a schematic diagram of the backwashing assembly of the present invention;

[0028] Figure 8 This is a schematic diagram of the support frame of the present invention viewed from below;

[0029] Figure 9 This is a schematic diagram of the flow guiding component of the present invention;

[0030] Figure 10 This is a schematic diagram of the cross-section of the pallet of the present invention;

[0031] Figure 11 This is a schematic diagram of the switching component of the present invention;

[0032] Figure 12 This is a schematic diagram of the structure of the multi-stage filter element of the present invention;

[0033] Figure 13 This is a schematic diagram of the auxiliary cleaning component of the present invention.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1. Purification tank; 2. Chemical tank; 3. Support leg; 4. Dosing assembly; 401. Water pump; 402. Water suction pipe; 403. Guide pipe; 404. Turnover box; 405. Inlet pipe; 406. Chemical pump; 407. Chemical suction pipe; 408. Injection pipe; 5. Ultraviolet germicidal lamp; 6. Support frame; 7. Through hole; 8. Leakage hole; 9. Collection box; 10. Filter cake assembly; 101. Filter cake belt; 102. Filter holes; 103. Drive roller; 104. Ear plate; 11. First motor; 12. Backwash assembly; 121. Hollow shaft; 122. Spray hole; 123. Actuating brush; 124. Transmission mechanism; 125. Rotary joint; 126. Water guide. 13. Pipe; 131. Flow guiding assembly; 132. Water receiving hopper; 133. Booster pump; 134. Branch pipe; 135. Connecting pipe; 16. Baffle plate; 17. Multi-stage filter element; 18. Support plate; 19. Water passage hole; 20. Sleeve; 21. Drain valve pipe; 22. Slag discharge valve pipe; 21. Switching assembly; 211. Rotary drum; 212. First water guide hole; 213. Second water guide hole; 214. Drain hole; 215. Slag discharge hole; 216. Rotary handle; 217. Water baffle plate; 22. Groove; 23. Wedge block; 24. Auxiliary cleaning assembly; 241. Second motor; 242. Turntable; 243. Slide groove; 244. Slider; 245. Striking wheel; 246. Spring. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figures 1-13 The present invention provides a technical solution:

[0038] A fishpond aquaculture wastewater purification and conditioning device includes a purification tank 1. A medicine box 2 is provided on one side of the purification tank 1 and a support leg 3 is fixed at the bottom. The medicine box 2 is fixed on the support leg 3. A dosing component 4 is installed on the medicine box 2. The top of the dosing component 4 penetrates through the top of the purification tank 1 and communicates with its interior.

[0039] The dosing assembly 4 includes a water pump 401, which is mounted on the support leg 3. The inlet and outlet of the water pump 401 are connected to a water pumping pipe 402 and a guide pipe 403, respectively. The other end of the guide pipe 403 is connected to a turnover box 404. An inlet pipe 405 is connected to the turnover box 404. The other end of the inlet pipe 405 passes through the top of the purification tank 1 and communicates with its interior. A filling pipe 408 is connected to one side of the turnover box 404. A chemical pump 406 is connected to the other end of the filling pipe 408. The chemical pump 406 is mounted on the chemical tank 2. The inlet of the chemical pump 406 is connected to a chemical suction pipe 407, which extends to the bottom of the chemical tank 2.

[0040] The wastewater is drawn through the pumping pipe 402 and transported to the transfer box 404 via the guide pipe 403. At the same time, the conditioning agents stored in the medicine tank 2 are drawn out by the medicine pump 406. The medicine pump 406 draws out the agents from the bottom of the medicine tank 2 through the medicine drawing pipe 407 and transports them to the transfer box 404 through the injection pipe 408. This achieves preliminary mixing of the agents and wastewater, avoiding excessive concentration of agents that could lead to violent local reactions and cause suspended pollutants in the wastewater to clump together, thus facilitating subsequent solid-liquid separation.

[0041] As a further embodiment of the present invention, a support frame 6 is fixed at the upper position inside the purification tank 1. Two through holes 7 are respectively opened on both sides of the support frame 6. A filter cake assembly 10 is installed inside the support frame 6. The filter cake assembly 10 is disposed through the through hole 7. One end of the filter cake assembly 10 passes through the purification tank 1 and is fixed with a first motor 11. The first motor 11 is installed outside the purification tank 1.

[0042] The filter cake assembly 10 includes a filter cake belt 101, which is disposed through the through holes 7 opened on both sides of the support frame 6. The filter cake belt 101 has a plurality of filter holes 102. The filter cake belt 101 is designed in the shape of a square and two drive rollers 103 are respectively sleeved on both sides inside. The end of one drive roller 103 passes through the purification tank 1 and is fixed to the output shaft of the first motor 11. The ends of the two drive rollers 103 on the same side are rotatably connected to ear plates 104, which are fixed to one side of the support frame 6.

[0043] The top of the purification tank 1 is equipped with an ultraviolet germicidal lamp 5. Several drainage holes 8 are opened in the extensions on both sides of the bottom of the support frame 6, and a collection box 9 is attached above it. The bottom of the collection box 9 is equipped with a drainage net, and the collection box 9 is inserted into the socket on the outside of the purification tank 1.

[0044] The collection boxes 9, which are attached to the extended portions on both sides of the bottom of the support frame 6, can receive the filter belt 101 and intercept the falling impurities. The drainage net at the bottom of the collection box 9 allows the seeping tailwater to flow smoothly down and into the water receiving hopper 131 below through the drainage hole 8, preventing impurities from accumulating on the support frame 6. When the impurities in the collection box 9 accumulate to a certain amount, they can be directly pulled out from the insertion hole on the outside of the purification tank 1 for cleaning, improving the convenience of operation.

[0045] Because the filter belt 101 is designed in a U-shape and is sleeved on the two drive rollers 103, the drive rollers 103 rotate to drive the filter belt 101 to circulate along the through hole 7. Large particles of impurities in the effluent are intercepted by the filter holes 102 on the filter belt 101 as it flows through, achieving preliminary solid-liquid separation of the effluent. At the same time, the collection boxes 9, which are attached to the extended parts on both sides of the bottom of the support frame 6, can receive the impurities intercepted by the filter belt 101. The filter belt 101, which is in circulation, efficiently intercepts large particles of impurities in the effluent, preventing impurities from accumulating and affecting the filtration progress.

[0046] As a further embodiment of the present invention, backwashing components 12 are respectively installed on both sides inside the filter cake assembly 10. The backwashing components 12 are located between two corresponding drive rollers 103. The backwashing components 12 include a hollow shaft 121. The hollow shaft 121 has several water spray holes 122 on its outside and communicates with the internal cavity. The hollow shaft 121 has several agitator brushes 123 on its outside and contacts one side of the inner wall of the filter cake belt 101. The flexible filaments in the agitator brushes 123 penetrate the filter holes 102. One end of the hollow shaft 121 passes through the ear plate 104 and is fixed with a transmission mechanism 124. The transmission mechanism 124 is composed of a transmission belt and two transmission wheels sleeved together. The two transmission wheels are respectively fixed to the ends of the hollow shaft 121 and the drive rollers 103. The other end of the hollow shaft 121 passes through the purification tank 1 and is equipped with a rotary joint 125. A water guide pipe 126 is connected in the rotary joint 125. The ends of the two water guide pipes 126 are connected to the top of the guide assembly 13.

[0047] Water is delivered to the water guide pipe 126, enters the internal cavity of the hollow shaft 121 through the rotary joint 125, and is then sprayed out through several water spray holes 122 on the outside of the hollow shaft 121 to backwash the inner wall of the filter belt 101. Simultaneously, since the hollow shaft 121 is connected to the transmission roller 103 via the transmission mechanism 124, which consists of a transmission belt and two transmission wheels, respectively linking the hollow shaft 121 and the transmission roller 103, the rotation of the transmission roller 103 drives the hollow shaft 121 to rotate synchronously through the transmission mechanism 124. The agitator brush 123 on the outside of the hollow shaft 121 rotates with the hollow shaft 121, and the flexible filaments of the agitator brush 123 penetrate the filter holes 102 of the filter belt 101, cleaning out the impurities clogging the filter holes 102. Combined with the backwashing action of the water spray holes 122, this achieves a comprehensive cleaning of the filter belt 101.

[0048] As a further embodiment of the present invention, one end of the backwashing assembly 12 penetrates through the purification tank 1 and is connected to the flow guiding assembly 13. The flow guiding assembly 13 includes a water receiving hopper 131, which is installed inside the purification tank 1 and located below the support frame 6. The bottom end of the water receiving hopper 131 is connected to a booster pump 132. The outlet end of the booster pump 132 is connected to a connecting pipe 134 and a branch pipe 133, respectively. The other end of the branch pipe 133 penetrates through the purification tank 1 and is connected to the ends of two water guiding pipes 126. A valve is installed on the outside of the branch pipe 133. Inside the purification tank 1, a partition 14 is provided at a position corresponding to the lower part of the flow guiding assembly 13. The bottom of the partition 14 is connected to a multi-stage filter element 15. A support plate 16 is installed at the bottom of the multi-stage filter element 15. The support plate 16 is fixed at the lower position inside the purification tank 1. The bottom end of the connecting pipe 134 penetrates through the partition 14 and the support plate 16 and is connected to the inside of the switching assembly 21.

[0049] The booster pump 132 delivers the filtered tailwater to the guide pipe 126, which then enters the internal cavity of the hollow shaft 121 through the rotary joint 125, and is then sprayed out through several spray holes 122 on the outside of the hollow shaft 121. Moreover, the booster pump 132 provides power for the tailwater delivery, allowing the tailwater to pass through the connecting pipe 134, sequentially through the partition plate 14 and the support plate 16, and enter the rotating drum 211 of the switching component 21. Through the diversion method, the purpose of backwashing and tailwater delivery is achieved.

[0050] As a further embodiment of the present invention, the other end of the flow guiding component 13 penetrates through the purification tank 1 and is equipped with a transverse sleeve 18 and a switching component 21. The bottom of the support plate 16 is fixed to the sleeve 18. Four water passage holes 17 are respectively opened at corresponding positions in the support plate 16 and the sleeve 18. The two water passage holes 17 in the middle are connected to the cavity inside the multi-stage filter element 15, and the water passage holes 17 on both sides are located between the multi-stage filter element 15 and the inner wall of the purification tank 1. The switching component 21 is transversely sleeved in the sleeve 18, and one end penetrates through the sleeve 18 and extends to the outside of the purification tank 1.

[0051] The switching assembly 21 includes a rotating drum 211, which is rotatably connected inside the sleeve 18. A first water guide hole 212 is provided at the top of the rotating drum 211 near the end of the connecting pipe 134. The first water guide hole 212 communicates with one of the water passage holes 17 in the sleeve 18 and the support plate 16. A second water guide hole 213 is provided at the front of the rotating drum 211 near the first water guide hole 212. The included angle between the first water guide hole 212 and the second water guide hole 213 is 90 degrees. The first water guide hole 212 at the top of the rotating drum 211 communicates with the corresponding water passage hole 17 in the sleeve 18 and the support plate 16, allowing the tailwater to enter the area between the multi-stage filter element 15 and the inner wall of the purification tank 1 through the water passage hole 17. The tailwater can permeate the multi-stage filter element 15 and accumulate in the cavity inside the multi-stage filter element 15.

[0052] The rotating drum 211 has three drain holes 214 in the middle, and the included angle between two adjacent drain holes 214 is 90 degrees. The uppermost drain hole 214 is connected to the cavity inside the multi-stage filter element 15 through the water passage hole 17. A drain valve pipe 19 is connected to the drain hole 214 at the front. One end of the drain valve pipe 19 is fixed outside the sleeve 18, and the other end extends to the outside of the purification treatment tank 1.

[0053] Two slag discharge holes 215 are provided on the side of the rotating drum 211 away from the connecting pipe 134. The two slag discharge holes 215 are located at the front and bottom of the rotating drum 211, respectively. A slag discharge valve pipe 20 is connected to the slag discharge hole 215 on the front side. One end of the slag discharge valve pipe 20 is fixed to the outside of the sleeve 18, and the other end extends to the outside of the purification tank 1. One end of the sleeve 18 penetrates the purification tank 1 and is fixed with a rotating handle 216. A baffle plate 217 is provided between the second water guide hole 213 and the drain hole 214, and between the drain hole 214 and the slag discharge hole 215. The baffle plate 217 is fixed to the inner wall of the rotating drum 211. Because a baffle plate 217 is provided between the slag discharge hole 215 and the drain hole 214, the tailwater containing impurities will not be discharged from the drain hole 214, and the wastewater containing impurities will eventually be discharged through the slag discharge pipe.

[0054] Rotating the handle 216 by 90 degrees allows the rotating drum 211 to rotate 90 degrees clockwise within the sleeve 18. The first water guide hole 212 is located behind the inner wall of the sleeve 18 and is offset from the water passage hole 17 directly above, blocking the tailwater from entering the area between the multi-stage filter element 15 and the purification tank 1 through the first water guide hole 212. At the same time, the slag discharge hole 215 in front of the rotating drum 211 is located at the top and communicates with the water passage hole 17 directly above, while the slag discharge hole 215 at the bottom moves to the front of the sleeve 18 and communicates with the slag discharge valve pipe 2. When the switch is closed, the second water guide hole 213 is located at the top and is connected to the water passage hole 17 directly above, allowing the tailwater to enter the cavity inside the multi-stage filter element 15 through the water passage hole 17. This increases the pressure inside the cavity of the multi-stage filter element 15, and the tailwater seeps out from the cavity inside the multi-stage filter element 15, washing away the impurities attached to the external pores of the multi-stage filter element 15. The tailwater containing impurities then flows through the area between the multi-stage filter element 15 and the purification tank 1 to the slag discharge hole 215, achieving the purpose of backwashing the multi-stage filter element 15 and discharging slag.

[0055] As a further embodiment of the present invention, a groove 22 is provided on the top of the multi-stage filter element 15, and three wedge-shaped blocks 23 are fixed on the inner wall of the groove 22. An auxiliary cleaning component 24 is provided between the three wedge-shaped blocks 23. The auxiliary cleaning component 24 includes a second motor 241, which is installed above the middle of the partition plate 14. The output shaft of the second motor 241 passes through the partition plate 14 and is fixedly connected to a turntable 242. The turntable 242 is located in the groove 22 and has sliding grooves 243 on both sides. A slider 244 is slidably connected inside the sliding groove 243. A striking wheel 245 and a spring 246 are respectively installed at both ends of the slider 244. The other end of the spring 246 is fixed to one side of the inner wall of the sliding groove 243. The striking wheel 245 contacts the inner wall of the groove 22 and faces the inclined surface of the wedge-shaped block 23.

[0056] During operation, the second motor 241 drives the turntable 242 to rotate within the groove 22 at the top of the multi-stage filter element 15. The sliders 244 in the sliding grooves 243 on both sides of the turntable 242 slide outward under the action of centrifugal force, causing the striking wheel 245 to contact the inclined surface of the wedge block 23 on the inner wall of the groove 22. As the turntable 242 continues to rotate, the striking wheel 245 slides along the inclined surface of the wedge block 23 and is continuously squeezed. With the elastic reset action of the spring 246, the striking wheel 245 repeatedly strikes the top of the multi-stage filter element 15. The vibration generated by the striking can loosen the impurities trapped inside the multi-stage filter element 15, preventing the impurities from clogging the pores inside the multi-stage filter element 15.

[0057] Working principle of this invention:

[0058] During the treatment of fishpond aquaculture wastewater, pump 401 is started, drawing wastewater through pumping pipe 402 and conveying it to transfer box 404 via guide pipe 403. Simultaneously, conditioning agents stored in medicine tank 2 are drawn by medicine pump 406. Medicine pump 406 draws agents from the bottom of medicine tank 2 through extraction pipe 407 and conveys them to transfer box 404 via injection pipe 408, achieving initial mixing of agents and wastewater. This prevents excessively high agent concentrations from causing severe localized reactions and allows suspended pollutants in the wastewater to clump together, preparing for subsequent deep filtration. The wastewater, mixed with the agents, flows through inlet pipe 405 through the top of purification tank 1 and into the interior of purification tank 1, flowing through the support frame 6 area at the top. At this time, first motor 11 starts and drives filter cake assembly 10, with the output shaft of first motor 11 driving the fixed... The drive roller 103 rotates. Since the filter belt 101 is designed in a U-shape and is sleeved on the drive rollers 103 on both sides, the drive roller 103 rotates and drives the filter belt 101 to circulate along the through hole 7. Large particles of impurities in the tailwater are intercepted by the filter holes 102 on the filter belt 101 when it flows through the filter belt 101, realizing the initial solid-liquid separation of the tailwater. At the same time, the collection box 9 connected to the bottom sides of the support frame 6 can receive the impurities intercepted by the filter belt 101. The water leakage net at the bottom of the collection box 9 allows the seeping tailwater to flow down smoothly and flow into the water receiving hopper 131 below from the water leakage hole 8, avoiding the accumulation of impurities on the support frame 6. When the impurities in the collection box 9 accumulate to a certain amount, they can be directly pulled out from the insertion hole outside the purification tank 1 for cleaning, realizing the purpose of solid-liquid separation of tailwater without affecting the continuous operation of the equipment.

[0059] During the solid-liquid separation process of the effluent, the ultraviolet germicidal lamp 5 installed on the top of the purification tank 1 works continuously. Utilizing the sterilizing effect of ultraviolet light, it destroys the nucleic acid structure of bacteria, viruses, and other microorganisms in the effluent, inhibiting microbial reproduction and reducing the risk of pollution to surrounding water bodies after effluent discharge. After the filter cake assembly 10 has been running for a period of time, the filter holes 102 on the filter cake belt 101 are easily clogged by impurities, affecting filtration efficiency. At this time, the backwash assembly 12 can be activated for self-cleaning. The valve on the branch pipe 133 is opened, allowing the outlet of the booster pump 132 to connect with the water guide pipe 126 of the backwash assembly 12 through the branch pipe 133. The booster pump 132 delivers the filtered effluent to the water guide pipe 126, which then enters the internal cavity of the hollow shaft 121 through the rotary joint 125. The effluent is then sprayed out through several spray holes 122 on the outside of the hollow shaft 121, cleaning the inner wall of the filter cake belt 101. Backwashing is performed simultaneously. Since the hollow shaft 121 is connected to the transmission roller 103 through the transmission mechanism 124, which consists of a transmission belt and two transmission wheels, the hollow shaft 121 and the transmission roller 103 are linked respectively. When the transmission roller 103 rotates, it drives the hollow shaft 121 to rotate synchronously through the transmission mechanism 124. The agitator brush 123 outside the hollow shaft 121 rotates with the hollow shaft 121. The flexible filaments of the agitator brush 123 penetrate the filter holes 102 of the filter belt 101 and clean the impurities blocked in the filter holes 102. Combined with the backwashing action of the spray hole 122, the filter belt 101 is thoroughly cleaned. The impurities and wastewater generated during rinsing fall into the collection box 9. The collection box 9 can be cleaned by pulling it out. The wastewater after backwashing flows into the water receiving hopper 131 through the water leakage net and water leakage hole 8 at the bottom of the collection box 9 and merges with the pretreated tailwater.

[0060] After pretreatment and chemical conditioning, the effluent flows through the receiving hopper 131 and converges to the booster pump 132. The booster pump 132 starts to provide power for the effluent delivery, allowing the effluent to pass through the connecting pipe 134, sequentially through the baffle 14 and the support plate 16, and enter the rotating drum 211 of the switching assembly 21. At this time, the switching assembly 21 is in normal purification and filtration state, so that the first water guide hole 212 at the top of the rotating drum 211 is connected to the corresponding water passage hole 17 in the sleeve 18 and the support plate 16, allowing the effluent to enter the area between the multi-stage filter element 15 and the inner wall of the purification tank 1 through the water passage hole 17. The effluent can penetrate the multi-stage filter element 15, and the purified effluent... Water accumulates in the cavity inside the multi-stage filter element 15, while the isolated impurities adhere to the pores on the outside of the multi-stage filter element 15. At the same time, the first water guide hole 212 and the second water guide hole 213 on the rotating drum 211 are isolated from the drain hole 214 and the slag discharge hole 215, and are sealed by the baffle plate 217. The purified tailwater inside the multi-stage filter element 15 enters the drain valve pipe 19 for discharge through the lower water passage hole 17 and the drain hole 214. When it is necessary to backwash and discharge the slag from the multi-stage filter element 15, the rotating handle 216 is rotated 90 degrees, so that the rotating drum 211 can rotate 90 degrees clockwise in the sleeve 18 simultaneously.

[0061] During this process, the first water guide hole 212 is located behind the inner wall of the sleeve 18 and is offset from the water passage hole 17 directly above, blocking the tailwater from entering the area between the multi-stage filter element 15 and the purification tank 1 through the first water guide hole 212. At the same time, the slag discharge hole 215 in front of the rotating drum 211 is located at the top and communicates with the water passage hole 17 directly above, while the slag discharge hole 215 at the bottom moves to the front of the sleeve 18 and connects with the slag discharge valve pipe 20. The second water guide hole 213 is located at the top and communicates with the water passage hole 17 directly above, allowing the tailwater to enter the multi-stage filter element 15 through the water passage hole 17. Inside the cavity of the filter element 15, the pressure inside the multi-stage filter element 15 increases, and the tailwater seeps out from the cavity inside the multi-stage filter element 15, washing away the impurities attached to the external pores of the multi-stage filter element 15. The tailwater containing impurities flows through the area between the multi-stage filter element 15 and the purification tank 1 to the slag discharge hole 215. Because a baffle plate 217 is provided between the slag discharge hole 215 and the drain hole 214, the tailwater containing impurities will not be discharged from the drain hole 214, so that the wastewater containing impurities is finally discharged through the slag discharge pipe, thus achieving the purpose of backwashing and slag discharge of the multi-stage filter element 15.

[0062] When the wastewater enters the cavity inside the multi-stage filter element 15 through the second water guide hole 213 and the water passage hole 17, the pressure inside the multi-stage filter element 15 increases, and the wastewater can seep out from the inside of the multi-stage filter element 15, achieving the purpose of backwashing the multi-stage filter element 15. Next, the second motor 241 drives the turntable 242 to rotate within the groove 22 at the top of the multi-stage filter element 15. The sliders 244 in the sliding grooves 243 on both sides of the turntable 242 slide outwards under centrifugal force, causing the striking wheel 2... 45 contacts the inclined surface of the wedge-shaped block 23 on the inner wall of the groove 22. As the turntable 242 continues to rotate, the striking wheel 245 slides along the inclined surface of the wedge-shaped block 23 and is continuously squeezed. With the elastic reset action of the spring 246, the striking wheel 245 repeatedly strikes the top of the multi-stage filter element 15. The vibration generated by the striking can loosen the impurities trapped inside the multi-stage filter element 15, preventing impurities from accumulating in the pores inside the multi-stage filter element 15 and causing blockage. Combined with the backwashing method, the impurities are discharged.

Claims

1. A fish pond breeding tail water purification conditioning device, comprising a purification treatment tank (1), characterized in that: The purification treatment tank (1) is provided with a medicine box (2) on one side and is fixed with support legs (3) at the bottom, the medicine box (2) is fixed on the support legs (3), a dosing assembly (4) is installed on the medicine box (2), the top end of the dosing assembly (4) penetrates the top of the purification treatment tank (1) and communicates with the inside thereof, a support frame (6) is fixed at the upper position inside the purification treatment tank (1), two through holes (7) are respectively formed in the two sides of the support frame (6), a residue filtering assembly (10) is installed inside the support frame (6), the residue filtering assembly (10) is arranged in the through hole (7) in a penetrating mode, one end of the residue filtering assembly (10) penetrates the purification treatment tank (1) and is fixed with a first motor (11), the first motor (11) is installed outside the purification treatment tank (1), backwashing assemblies (12) are respectively installed on the two sides inside the residue filtering assembly (10), one end of the backwashing assembly (12) penetrates the purification treatment tank (1) and is connected with a flow guide assembly (13), the other end of the flow guide assembly (13) penetrates the purification treatment tank (1) and is installed with a sleeve (18) and a switching assembly (21), a partition plate (14) is arranged at the position below the flow guide assembly (13) inside the purification treatment tank (1), the bottom of the partition plate (14) is connected with a multi-stage filter element (15), a supporting plate (16) is installed at the bottom of the multi-stage filter element (15), the supporting plate (16) is fixed at the lower position inside the purification treatment tank (1), the bottom of the supporting plate (16) is fixed with the sleeve (18), four water through holes (17) are respectively formed in the supporting plate (16) and the sleeve (18), the two water through holes (17) in the middle communicate with the cavity inside the multi-stage filter element (15), the two water through holes (17) on the two sides are located between the multi-stage filter element (15) and the inner wall of the purification treatment tank (1), the switching assembly (21) is sleeved in the sleeve (18) and penetrates the sleeve (18) at one end and extends to the outside of the purification treatment tank (1).

2. The fish pond tail water purification conditioning device according to claim 1, characterized in that: The top of the purification treatment tank (1) is installed with an ultraviolet sterilization lamp (5), a plurality of water leakage holes (8) are formed in the extension portions on the two sides of the bottom of the support frame (6) and the upper portions are lapped with a collecting box (9), the bottom of the collecting box (9) is provided with a water leakage net, the collecting box (9) is inserted into the jack on the outside of the purification treatment tank (1).

3. The fish pond tail water purification conditioning device according to claim 1, characterized in that: The medicine adding assembly (4) comprises a water pump (401) installed on the supporting leg (3), the water inlet end and the water outlet end of the water pump (401) are connected with a water pumping pipe (402) and a guide pipe (403) respectively, the other end of the guide pipe (403) is connected with a turnover box (404), the turnover box (404) is connected with a guide-in pipe (405), the other end of the guide-in pipe (405) penetrates through the top of the purification treatment tank (1) and communicates with the inside thereof, one side of the turnover box (404) is connected with a filling pipe (408), the other end of the filling pipe (408) is connected with a medicine pump (406), the medicine pump (406) is installed on the medicine box (2), the liquid inlet end of the medicine pump (406) is connected with a medicine pumping pipe (407), the medicine pumping pipe (407) extends to the bottom of the medicine box (2).

4. The device for purifying and conditioning the tail water of a fish pond according to claim 1, characterized in that: The residue filtering assembly (10) comprises a residue filtering belt (101) penetratingly arranged in the through hole (7) formed on the two sides of the supporting frame (6), a plurality of filtering holes (102) are formed in the residue filtering belt (101), the residue filtering belt (101) is designed in a mouth-shaped type and two transmission rollers (103) are sleeved on the two sides in the residue filtering belt (101) respectively, the end of one of the transmission rollers (103) penetrates through the purification treatment tank (1) and is fixed with the output shaft of the first motor (11), the ends of the two transmission rollers (103) on the same side are rotatably provided with an ear plate (104), the ear plate (104) is fixed on one side of the supporting frame (6), and the backwashing assembly (12) is located between the two transmission rollers (103).

5. A fish pond aquaculture tail water purification conditioning apparatus according to claim 4, characterized in that: The backwashing assembly (12) comprises a hollow shaft (121), a plurality of water spraying holes (122) are formed in the outer part of the hollow shaft (121) and communicate with the inner cavity, a plurality of dithering brushes (123) are arranged on the outer part of the hollow shaft (121) and are in contact with one side of the inner wall of the residue filtering belt (101), and the flexible filaments in the dithering brushes (123) penetrate through the filtering holes (102), one end of the hollow shaft (121) penetrates through the ear plate (104) and is fixed with a transmission mechanism (124), the transmission mechanism (124) is composed of a transmission belt and two transmission wheels, the two transmission wheels are fixed with the end of the hollow shaft (121) and the end of the transmission roller (103) respectively, the other end of the hollow shaft (121) penetrates through the purification treatment tank (1) and is installed with a rotary joint (125), the rotary joint (125) is connected with the water guide pipes (126), and the ends of the two water guide pipes (126) are connected with the top end of the water guide assembly (13).

6. A fish pond aquaculture tail water purification conditioning apparatus according to claim 5, characterized in that: The diversion assembly (13) comprises a water collecting bucket (131) installed in the purification treatment tank (1) below the support frame (6), a booster pump (132) connected to the bottom end of the water collecting bucket (131), a branch pipe (133) and a connecting pipe (134) respectively connected to the water outlet end of the booster pump (132), the other end of the branch pipe (133) penetrating the purification treatment tank (1) and communicating with the end of the two water guide pipes (126), a valve installed outside the branch pipe (133), and the bottom end of the connecting pipe (134) penetrating the partition (14), the box and the supporting plate (16) and communicating with the inside of the switching assembly (21).

7. A fish pond aquaculture tail water purification conditioning apparatus according to claim 6, characterized in that: The switching assembly (21) comprises a rotating cylinder (211) rotationally connected in the sleeve (18), a first water guide hole (212) formed in the top of the rotating cylinder (211) near the position of the end of the connecting pipe (134), the first water guide hole (212) communicating with the sleeve (18) and one of the water through holes (17) in the supporting plate (16), a second water guide hole (213) formed in the front of the rotating cylinder (211) near the first water guide hole (212), and the included angle between the first water guide hole (212) and the second water guide hole (213) being ninety degrees.

8. The fish pond effluent purification conditioning apparatus according to claim 7, characterized by: Three water drainage holes (214) are formed in the middle of the rotating cylinder (211), the included angle between two adjacent water drainage holes (214) being ninety degrees, the uppermost water drainage hole (214) communicating with the cavity inside the multi-stage filter element (15) through the water through hole (17), a water drainage valve pipe (19) connected in the front water drainage hole (214), one end of the water drainage valve pipe (19) penetrating and fixed outside the sleeve (18) and the other end extending to the outside of the purification treatment tank (1), two residue discharge holes (215) formed in the side of the rotating cylinder (211) away from the connecting pipe (134), the two residue discharge holes (215) being respectively located in the front side and the lower side of the rotating cylinder (211), a residue discharge valve pipe (20) connected in the front side residue discharge hole (215), the end of the residue discharge valve pipe (20) fixed outside the sleeve (18) and the other end extending to the outside of the purification treatment tank (1), one end of the sleeve (18) penetrating the purification treatment tank (1) and fixed with a rotating handle (216), and a water baffle (217) provided between the second water guide hole (213) and the water drainage hole (214) and between the water drainage hole (214) and the residue discharge hole (215), the water baffle (217) being fixed on the inner wall of the rotating cylinder (211).

9. The fish pond effluent purification conditioning apparatus according to claim 1, characterized by: The top of the multistage filter element (15) is provided with a groove (22), the inner wall of the groove (22) is fixedly provided with three wedge blocks (23), the three wedge blocks (23) are provided with an auxiliary cleaning assembly (24), the auxiliary cleaning assembly (24) comprises a second motor (241), the second motor (241) is installed above the middle part of the partition plate (14), the output shaft of the second motor (241) penetrates the partition plate (14) and is fixedly connected with a rotating disc (242), the rotating disc (242) is located in the groove (22) and is provided with a sliding groove (243) on the two sides, the sliding groove (243) is slidably connected with a sliding block (244), the two ends of the sliding block (244) are respectively provided with a knocking wheel (245) and a spring (246), the other end of the spring (246) is fixed to one side of the inner wall of the sliding groove (243), the knocking wheel (245) is in contact with the inner wall of the groove (22) and is inclined to the inclined surface of the wedge block (23).

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