Energy-saving and environment-friendly tail water treatment device for aquaculture of aquatic product factory

Abstract

The invention belongs to the technical field of sewage treatment, and discloses an energy-saving and environment-friendly tail water treatment device for aquaculture in an aquatic product factory, the energy-saving and environment-friendly tail water treatment device comprises a shell, and a water inlet assembly is arranged at the bottom end of the shell; the flocculation cylinder is coaxially arranged in the inner cavity of the shell and is communicated with the water inlet assembly; a stirring assembly is rotationally connected into the flocculation cylinder, and an intercepting assembly longitudinally slides on the stirring assembly and is in sliding connection with the side wall of the flocculation cylinder; the separation cylinder is arranged in the shell and coaxially sleeves the flocculation cylinder, a separation net is arranged in the separation cylinder in a lifting sliding manner, and the separation net is in sliding contact with the outer wall of the flocculation cylinder and the inner wall of the separation cylinder; and the deslagging cylinder is arranged outside the shell and is communicated with the outlet of the separation cylinder. The device is compact in structure and small in occupied space, through cooperative work of all the components, filtering treatment of breeding tail water is achieved, the tail water treatment efficiency and effect are improved, meanwhile, maintenance and management are convenient, energy saving and environmental protection are achieved, the treatment efficiency is high, the equipment maintenance difficulty is reduced, and the requirement for breeding tail water treatment of an aquatic product factory is met.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to an energy-saving and environmentally friendly tail water treatment device for aquaculture in aquatic factories. Background Art

[0002] In factory aquaculture, organic pollutants such as leftover bait, excrement, and dead organisms, as well as inorganic pollutants like ammonia nitrogen, hydrogen sulfide, and nitrite, accumulate in ponds, seriously contaminating the aquaculture water and threatening the health of aquatic organisms. Regular replacement of tailwater is essential to ensure the normal growth of aquatic species. However, when untreated tailwater is discharged directly into external water bodies, its high concentrations of pollutants such as nitrogen and phosphorus can cause eutrophication, disrupting the ecological balance of natural waters, deteriorating water quality, and impacting the survival of aquatic organisms.

[0003] The first step in aquaculture tailwater treatment is filtration to remove solid waste from the tailwater. The existing tailwater filtration process typically involves adding flocculants to the water to cause dissolved substances to flocculate and precipitate, and then mechanically filtering the flocculants, bait residues, and excrement to separate from the tailwater. However, this solution has obvious flaws: flocculants easily adhere to the filter screen, resulting in a decrease in filtration efficiency and affecting the tailwater treatment effect. To maintain treatment efficiency, the filter screen needs to be frequently removed for cleaning. This cleaning process is not only cumbersome, but also requires interrupting the filtration process and emptying the tailwater in the equipment, hindering the automated operation of tailwater treatment.

[0004] In response to the above problems, this application designs an energy-saving and environmentally friendly tailwater treatment device for aquaculture factories, aiming to solve the problems of easy clogging of filter screens, inconvenient cleaning and low treatment efficiency in the existing technology, and to achieve efficient, automated and environmentally friendly tailwater treatment. Summary of the Invention

[0005] The purpose of the present invention is to provide an energy-saving and environmentally friendly tailwater treatment device for aquaculture in aquatic factories to solve the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides an energy-saving and environmentally friendly tailwater treatment device for aquaculture factory, comprising:

[0007] A housing, wherein a water inlet assembly for pumping aquaculture tail water is provided at the bottom end of the housing;

[0008] A flocculation cylinder is coaxially arranged in the inner cavity of the shell, and the water inlet assembly is connected to the bottom end of the flocculation cylinder; a stirring assembly for stirring the aquaculture tail water is rotatably connected in the flocculation cylinder, and an interception assembly is longitudinally slidably provided on the stirring assembly, and the interception assembly is slidably connected to the side wall of the flocculation cylinder;

[0009] A separation cylinder is provided in the housing and is coaxially sleeved outside the flocculation cylinder. A separation net is provided in the separation cylinder for lifting and sliding movement. The separation net is in sliding contact with the outer wall of the flocculation cylinder and the inner wall of the separation cylinder respectively.

[0010] A slag discharge barrel is provided outside the shell and is communicated with the outlet of the separation barrel.

[0011] Preferably, the water inlet assembly includes a water inlet box arranged at the bottom of the shell, and the top of the water inlet box is connected to the inner cavity of the flocculation cylinder through a plurality of water injection pipes; a one-way module that opens one-way toward the flocculation cylinder is provided in the water injection pipe.

[0012] Preferably, the stirring assembly includes a stirring motor arranged at the bottom end of the outer shell, the stirring motor is transmission-connected to a stirring shaft, the top end of the stirring shaft extends into the outer shell and is fixedly connected to a plurality of stirring teeth; a bottom filter is rotatably connected to the stirring shaft, the bottom filter is located between the intercepting assembly and the stirring teeth, and the bottom filter is fixedly connected to the side wall of the flocculation cylinder.

[0013] Preferably, a medicine adding box is provided at the bottom end of the shell, and the medicine adding box is rotatably sleeved on the outside of the stirring shaft; a medicine adding chamber is opened in the stirring shaft, a medicine distribution chamber connected to the medicine adding chamber is opened in the stirring teeth, and a plurality of medicine outlet holes are opened through the outer wall of the medicine distribution chamber; the medicine adding box is connected to the medicine adding chamber through a plurality of medicine inlet holes.

[0014] Preferably, the interception assembly includes a connecting ring sleeved on the stirring shaft, and an interception net is fixed to the outside of the connecting ring and is in sliding contact with the inner wall of the flocculation cylinder; a plurality of clearance holes are opened on the inner wall of the connecting ring, and a sliding rod elastically slides in the clearance hole, and the sliding rod extends out of the clearance hole and is fixed with a threaded block, and the threaded block is threadedly connected to the threaded cylinder sleeved and fixed on the stirring shaft.

[0015] Preferably, the inner wall of the flocculation cylinder is provided with a plurality of longitudinal guide grooves, the outer ring of the interception net is fixed with a reinforcement ring, the outer wall of the reinforcement ring is fixed with a plurality of guide blocks corresponding to the guide grooves, the guide blocks extend into the guide grooves and are slidably connected to the guide grooves.

[0016] Preferably, the top end of the stirring shaft is fixed with a fixed cylinder, the outside of the fixed cylinder is fixed with a cleaning rack corresponding to the intercepting net, the bottom end of the cleaning rack is fixed with a plurality of cleaning brushes, and the cleaning brushes are in sliding contact with the top surface of the intercepting net.

[0017] Preferably, the separation cylinder includes a first filter screen fixedly connected to the bottom end of the outer shell and arranged around the flocculation cylinder, the top of the first filter screen is fixedly connected to an isolation cylinder, and the top of the isolation cylinder is lower than the top of the flocculation cylinder; the top of the isolation cylinder is fixedly connected to a second filter screen inclined toward the inner wall of the outer shell, and several of the slag discharge cylinders are respectively connected to the lower end of the second filter screen; the outer wall of the separation screen is respectively slidably connected to the inner wall of the first filter screen and the inner wall of the isolation cylinder.

[0018] Preferably, the slag discharge barrel includes a barrel fixedly connected to the outer shell and connected to the lower end of the second filter screen, a slag discharge motor is installed at the end of the barrel, the slag discharge motor is transmission-connected to an extrusion shaft rotatably connected to the barrel, the extrusion shaft extends into the outer shell and is rotatably connected to the second filter screen; a spiral conveying piece is fixed to the extrusion shaft, and the spacing of the spiral conveying pieces gradually decreases toward the side away from the outer shell.

[0019] Preferably, a plurality of water filtering holes are provided in the through-piece at the bottom end of the cylinder, and a water collecting box is fixedly connected to the bottom end of the cylinder, and the water collecting box is arranged corresponding to the water filtering holes.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects: the present invention discloses an energy-saving and environmentally friendly tail water treatment device for aquaculture in aquatic factories. The outer shell serves as the external structure of the entire device, which protects the internal components and accommodates the aquaculture tail water, providing space for subsequent treatment; a water inlet assembly is provided at the bottom end thereof for pumping the aquaculture tail water, so that the tail water enters the interior of the device and starts the treatment process; a flocculation cylinder is coaxially arranged in the inner cavity of the outer shell and is connected with the bottom end of the water inlet assembly, and the tail water enters the flocculation cylinder from the water inlet assembly, and the stirring assembly connected in rotation in the flocculation cylinder stirs the aquaculture tail water, which helps to fully mix the added flocculant with the tail water, so that impurities such as suspended particles in the water gather to form larger flocs, which is convenient for subsequent separation; the interception assembly slides longitudinally On the stirring component, it is slidably connected to the side wall of the flocculation cylinder, which can intercept larger impurities and prevent them from affecting the stirring effect and subsequent treatment. At the same time, it rises and falls with the rotation of the stirring component to discharge the flocs from the flocculation cylinder, which is convenient for subsequent floc treatment; the separation cylinder is arranged in the outer shell and coaxially sleeved outside the flocculation cylinder. The tail water and flocs treated by the flocculation cylinder enter the separation cylinder. The separation net can separate the solid and liquid of the tail water through the lifting movement, and separate the flocs and other solid impurities formed by flocculation, thereby realizing preliminary purification of the tail water; the slag discharge cylinder is arranged outside the outer shell and is connected to the outlet of the separation cylinder. The solid impurities intercepted above the separation net can enter the slag discharge cylinder through the outlet of the separation cylinder, thereby realizing centralized collection and discharge of solid impurities, which is convenient for subsequent treatment and disposal.

[0021] The present invention has a compact structure and occupies a small space. Through the coordinated work of various components, it realizes the filtration treatment of aquaculture tail water, improves the efficiency and effect of tail water treatment, and is easy to maintain and manage, energy-saving and environmentally friendly, has high treatment efficiency, reduces the difficulty of equipment maintenance, and meets the needs of aquaculture tail water treatment in aquatic factories. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0023] Figure 1 This is a schematic structural diagram of the energy-saving and environmentally friendly tailwater treatment device for aquaculture in aquatic factories according to the present invention;

[0024] Figure 2 For the present invention Figure 1 A partial enlarged view of middle A;

[0025] Figure 3 For the present invention Figure 1 A partial enlarged view of B in the middle;

[0026] Figure 4 For the present invention Figure 1 A partial enlarged view of center C;

[0027] Figure 5 For the present invention Figure 1 A partial enlarged view of middle D;

[0028] Figure 6 For the present invention Figure 1 A partial enlarged view of middle E;

[0029] In the figure: 1. housing; 2. flocculation cylinder; 3. separation cylinder; 4. slag discharge cylinder; 11. support foot; 12. water inlet tank; 13. water injection pipe; 14. water supply pipe; 15. first water outlet pipe; 16. second water outlet pipe; 21. stirring motor; 22. stirring shaft; 23. stirring teeth; 24. bottom filter; 25. dosing box; 26. dosing chamber; 27. drug distribution chamber; 28. drug outlet hole; 29. drug inlet hole; 210. drug supply pipe; 211. connecting ring; 212. intercepting net; 213. clearance hole; 214. electromagnet; 215. sliding rod; 216. permanent magnet; 217. threaded block; 218. threaded cylinder; 219. Return spring; 220. Guide groove; 221. Reinforcement ring; 222. Guide block; 223. Elastic rope; 224. Cleaning frame; 225. Fixing cylinder; 226. Cleaning brush; 227. Positioning hole; 228. Positioning rod; 229. Positioning ring; 230. Positioning spring; 31. Separation net; 32. First filter screen; 33. Isolation cylinder; 34. Second filter screen; 35. Partition plate; 36. Telescopic rod; 41. Slag discharge motor; 42. Extrusion shaft; 43. Screw conveyor; 44. Slag outlet; 45. Water filter hole; 46. Water collecting box; 47. Water collecting pipe; 48. One-way valve; 49. Cylinder. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] 1. The energy-saving and environmentally friendly tailwater treatment for aquaculture in this application generally adopts the following technologies:

[0032] (1) Physical treatment technology

[0033] Filtration technology: Sand and mesh filtration are used to remove suspended solids from tailwater. Rapid filters are commonly used in traditional pond aquaculture, trapping impurities through filter media. In factory aquaculture, equipment such as microfiltration is also used. These filters separate solid particles from tailwater through the sieving action of mesh, effectively removing larger particles such as leftover bait and feces.

[0034] Sedimentation technology uses gravity to settle solid particles in tailwater, achieving solid-liquid separation. The sedimentation tanks used in the "three-tank, two-dam" system, as well as the sedimentation units installed in some factory aquaculture tailwater treatment systems, all utilize the same principle. During the sedimentation process, after the tailwater enters the sedimentation tank, the flow rate decreases, and solid particles settle to the bottom of the tank under the action of gravity. The supernatant then enters the subsequent treatment unit.

[0035] Flotation technology: For example, Shandong Zhongtai Environmental Protection Flotation Machine uses a pressure of 0.35-0.45 MPa to form a saturated dissolved air carrier in the dissolved air tank with air and part of the return water. A large number of tiny bubbles are generated by reducing the pressure through the releaser. The bubbles quickly adhere to the flowing particles, emulsified oil, water solution and flocs of coagulation reaction, making the flocs have a specific gravity less than that of water, so that they float on the water surface to achieve solid-liquid separation.

[0036] (2) Biological treatment technology

[0037] Biofilm technology: Microorganisms attach to the surface of a carrier to form a biofilm. As tailwater passes through the biofilm, the microorganisms decompose organic matter and nutrients such as nitrogen and phosphorus. Some industrial aquaculture tailwater treatment systems use biofilters and biorotating discs to provide a habitat for microorganisms to attach and grow, utilizing the adsorption and degradation effects of the biofilm to purify the tailwater.

[0038] Activated sludge process: Utilizes suspended microbial flocs (activated sludge) to treat tailwater. Common processes include the anaerobic-aerobic activated sludge process (A / O process) and the sequencing batch activated sludge process (SBR process). The A / O process degrades organic pollutants and removes nitrogen and phosphorus through alternating anaerobic and aerobic stages. The SBR process operates cyclically through stages including inlet, reaction, sedimentation, drainage, and idle time, achieving excellent decarbonization and denitrification effects.

[0039] Microbial agent applications: Microbial agents are used to decompose organic matter such as aquaculture waste, leftover bait, and plankton and plant debris, improving the aquatic environment. Different microbial strains have specific degradation capabilities for different pollutants. For example, some strains are highly effective at degrading ammonia nitrogen, while others are particularly effective at removing organic matter.

[0040] (3) Ecological treatment technology

[0041] Constructed wetland technology: Through physical filtration, chemical adsorption and precipitation, plant filtration, and microbial action, it effectively removes nutrients such as nitrogen and phosphorus from aquaculture tailwater. It also removes some chemical oxygen demand (COD), biochemical oxygen demand (BOD), and suspended solids (SS). In factory aquaculture, constructed wetlands can serve as advanced treatment units, creating ecosystems that simulate natural wetlands and purifying tailwater through the synergistic effects of wetland plants, substrates, and microorganisms.

[0042] Rice-fish farming technology involves introducing aquaculture wastewater into rice paddies, where fish, shrimp, crabs, and other commercial animals are raised. The soil is loosened, weeds, and pests are eliminated, and the rice plants absorb nutrients like nitrogen and phosphorus from the wastewater, purifying the water. The purified water is then recirculated back into the aquaculture system. While primarily used in pond aquaculture, some factory aquaculture systems can leverage this ecological cycle to develop similar integrated aquaculture-planting models.

[0043] (4) Comprehensive treatment technology

[0044] The "Three Ponds, Two Dams" technology integrates physical sedimentation, filler filtration, aeration and oxidation, and biological assimilation. By transforming ditches or marginal ponds in aquaculture areas, it achieves standard discharge or recycling of aquaculture tailwater. This technology offers low cost and strong adaptability, with parameterized construction plans for each treatment unit tailored to different aquaculture species.

[0045] Factory-based purification technology: The principles are similar to pond purification, but the technology is more refined and specialized. Coagulation is used to remove particles ranging from 1 nanometer to 100 microns from aquaculture tailwater, and activated carbon adsorption removes organic debris, proteins, and other substances from the water. However, the adsorption medium is easily clogged by suspended solids, the water volume is small, and the cost is relatively high.

[0046] Combined microbial and electrooxidation technology: This technology utilizes the degradation effects of microorganisms and the generation of active substances such as hydroxyl radicals from electrooxidation to remove pollutants. Electrochemical stimulation can alter the structure and function of the microbial community, enhancing denitrification performance. This technology offers advantages such as high efficiency, a small footprint, and strong controllability, but the cost of electrode materials is relatively high.

[0047] 2. Shortcomings of existing technologies need to be addressed urgently

[0048] (1) Physical treatment technology

[0049] Filtration technology: Filter media are prone to clogging, requiring regular cleaning or replacement, which wastes both manpower and material resources. For example, in aquaculture, traditional rapid filtration tanks, due to the high concentration of suspended solids in tailwater, can quickly become clogged, impacting filtration effectiveness and treatment efficiency. They are also limited in removing smaller pollutants, making it difficult to meet increasingly stringent emission standards.

[0050] Sedimentation technology: Sedimentation efficiency is significantly affected by factors such as particle size, density, and tailwater flow rate. It is not effective for some light suspended solids and colloids. Sedimentation takes a long time and requires a large area, which limits its application in factory farming environments with limited space.

[0051] Flotation technology: Flotation machines consume a certain amount of energy to generate pressure and bubbles during operation, increasing operating costs. They are not very effective in removing some soluble pollutants and often need to be combined with other treatment technologies.

[0052] (2) Biological treatment technology

[0053] Biofilm technology: The growth and metabolism of biofilms are significantly affected by environmental factors such as temperature and water quality. Under extreme conditions such as low temperatures and high salinity, microbial activity decreases, reducing treatment effectiveness. The selection and maintenance of biofilm carriers are crucial. Clogged or aged carriers can impair microbial attachment and growth, further impacting treatment effectiveness.

[0054] Activated sludge process: The A / O and SBR processes have limited adaptability to changes in water quality and quantity. When tailwater quality fluctuates significantly, treatment results can be unstable. The activated sludge process requires a larger reactor volume and a longer hydraulic retention time, increasing construction costs and floor space. Sludge production is high, resulting in high sludge treatment and disposal costs. Improper handling can also cause secondary pollution.

[0055] Application of microbial agents: Different microbial agents have different requirements for environmental conditions. Screening for the right agent requires extensive experimentation tailored to the specific aquaculture tailwater quality. In actual application, the activity and effectiveness of microbial agents are easily inhibited by harmful substances (such as heavy metals and antibiotics) in aquaculture tailwater, affecting the treatment effect.

[0056] (3) Ecological treatment technology

[0057] Constructed wetland technology: It occupies a large area and is difficult to implement given the limited space available for factory farming. Wetland plant growth is affected by the seasons; plants wither in winter, reducing their purification capacity. The activity of microorganisms in wetland systems is also affected by temperature, resulting in seasonal variations in treatment effectiveness.

[0058] Rice-fish farming: Primarily suitable for pond aquaculture, it is less compatible with factory farming. Due to significant geographical and seasonal constraints, it is difficult to apply in areas unsuitable for rice cultivation.

[0059] (4) Comprehensive treatment technology

[0060] "Three ponds, two dams" technology: While low in construction cost, its treatment efficiency is relatively low, making it difficult to meet the rapid treatment needs of large-scale factory aquaculture tailwater. Its adaptability to different aquaculture species and scales requires further optimization, and its effectiveness in treating highly contaminated tailwater may be suboptimal.

[0061] Factory-based purification technology: High equipment and operating costs limit its application in some small-scale factory farms. Problems such as adsorption media clogging and low water volume treatment are prone to occur during the treatment process, affecting the stable operation of the equipment and the treatment effect.

[0062] Microbial-electrooxidation technology: The high cost of electrode materials increases the initial investment in equipment. This technology is still in the research and application promotion phase, with further development required for technical maturity and verification of its stability and reliability in practical engineering applications.

[0063] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0064] Reference Figure 1 - Figure 6 As shown, this embodiment provides an energy-saving and environmentally friendly tailwater treatment device for aquaculture factory, comprising:

[0065] The shell 1 has a water inlet assembly at the bottom end thereof for pumping in aquaculture tail water;

[0066] The flocculation cylinder 2 is coaxially arranged in the inner cavity of the shell 1, and the water inlet assembly is connected to the bottom end of the flocculation cylinder 2; a stirring assembly for stirring the aquaculture tail water is rotatably connected in the flocculation cylinder 2, and an interception assembly is longitudinally slidably provided on the stirring assembly, and the interception assembly is slidably connected to the side wall of the flocculation cylinder 2;

[0067] Separation cylinder 3, which is arranged in the housing 1 and coaxially sleeved outside the flocculation cylinder 2. A separation net 31 is provided in the separation cylinder 3 and slides upward and downward. The separation net 31 is in sliding contact with the outer wall of the flocculation cylinder 2 and the inner wall of the separation cylinder 3 respectively;

[0068] The slag discharge tube 4 is arranged outside the shell 1 and is connected to the outlet of the separation tube 3.

[0069] The present invention discloses an energy-saving and environmentally friendly tail water treatment device for aquaculture in aquatic factories. The outer shell 1 serves as the external structure of the entire device, plays the role of protecting the internal components and accommodating the aquaculture tail water, and provides space for subsequent treatment; a water inlet component is arranged at the bottom end thereof for pumping the aquaculture tail water, so that the tail water enters the interior of the device and starts the treatment process; a flocculation cylinder 2 is coaxially arranged in the inner cavity of the outer shell 1 and is connected with the bottom end of the water inlet component, and the tail water enters the flocculation cylinder 2 from the water inlet component, and the stirring component rotatably connected in the flocculation cylinder 2 stirs the aquaculture tail water, which helps the added flocculant to be fully mixed with the tail water, so that impurities such as suspended particles in the water gather to form larger flocs, which is convenient for subsequent separation; the interception component slides longitudinally on the stirring component, so that it slides with the side wall of the flocculation cylinder 2 The dynamic connection can intercept larger impurities to prevent them from affecting the stirring effect and subsequent treatment. At the same time, it rises and falls with the rotation of the stirring component to discharge the flocculants from the flocculation cylinder 2, which is convenient for subsequent flocculant treatment; the separation cylinder 3 is arranged in the shell 1 and is coaxially sleeved outside the flocculation cylinder 2. The tail water and flocculants treated by the flocculation cylinder 2 enter the separation cylinder 3. The separation net 31 can perform solid-liquid separation on the tail water through the lifting movement, and separate the flocculants and other solid impurities formed by flocculation, thereby achieving preliminary purification of the tail water; the slag discharge cylinder 4 is arranged outside the shell 1 and is connected to the outlet of the separation cylinder 3. The solid impurities intercepted above the separation net 31 can enter the slag discharge cylinder 4 through the outlet of the separation cylinder 3, thereby achieving centralized collection and discharge of solid impurities, which is convenient for subsequent treatment and disposal. The present invention has a compact structure and occupies a small space. Through the coordinated work of various components, it realizes the filtration treatment of aquaculture tail water, improves the efficiency and effect of tail water treatment, is easy to maintain and manage, is energy-saving and environmentally friendly, has high treatment efficiency, reduces the difficulty of equipment maintenance, and meets the needs of aquaculture tail water treatment in aquaculture factories.

[0070] In one embodiment of the present application, a plurality of supporting legs 11 are provided at the bottom end of the housing 1 to fix the device at the production site and ensure the stability of the device operation.

[0071] In one embodiment of the present application, the water inlet assembly includes an inlet tank 12 disposed at the bottom of the housing 1. The top of the inlet tank 12 communicates with the interior of the flocculation drum 2 via a plurality of water injection pipes 13. The water injection pipes 13 are equipped with a one-way module that opens only in one direction toward the flocculation drum 2. A water supply pipe 14 pumps the aquaculture tailwater to be treated into the inlet tank 12, which then injects it into the flocculation drum 2 within the housing 1 through the water injection pipes 13, ensuring uniform injection of the treated water. The one-way device, a conventional one-way valve 48, is primarily used to prevent backflow of water within the flocculation drum 2.

[0072] In one embodiment of the present application, a drain switch (conventional design, not shown in the drawings) for draining water is provided at the bottom of the side wall of the flocculation cylinder 2. After the treatment is completed, the remaining water in the flocculation cylinder 2 is introduced into the separation cylinder 3, which is also convenient for cleaning.

[0073] In one embodiment of the present application, the stirring assembly includes a stirring motor 21 arranged at the bottom end of the outer shell 1, and the stirring motor 21 is transmission-connected to a stirring shaft 22, the top end of the stirring shaft 22 extends into the outer shell 1 and is fixedly connected to a plurality of stirring teeth 23; a bottom filter 24 is rotatably connected to the stirring shaft 22, the bottom filter 24 is located between the intercepting assembly and the stirring teeth 23, and the bottom filter 24 is fixedly connected to the side wall of the flocculation cylinder 2; a dosing box 25 is provided at the bottom end of the outer shell 1, and the dosing box 25 is rotatably sleeved on the outside of the stirring shaft 22; a dosing chamber 26 is opened in the stirring shaft 22, and a medicine distribution chamber 27 connected to the medicine distribution chamber 26 is opened in the stirring teeth 23, and a plurality of medicine outlet holes 28 are opened through the outer wall of the medicine distribution chamber 27; the dosing box 25 is connected to the dosing chamber 26 through a plurality of medicine inlet holes 29. The drug supply pipe 210 pumps the flocculant into the drug adding box 25, and then enters the drug adding chamber 26 and the drug distribution chamber 27 through the drug inlet hole 29, and finally enters the flocculation cylinder 2 from the drug outlet hole 28. At the same time, the stirring motor 21 drives the stirring shaft 22 to rotate, so that the stirring teeth 23 rotate accordingly, and distributes the drug while stirring, thereby increasing the uniformity of the contact between the flocculant and the water; the evenly stirred water is pushed upward by the new water gradually flowing in from below, and gradually flocculates. The flocculants are intercepted by the bottom filter 24 and the interception component. The bottom filter 24 is between the interception component and the stirring teeth 23 to reduce the flocculants from falling to the bottom end of the flocculation cylinder 2. Most of the flocculants will enter the separation cylinder 3 driven by the interception component.

[0074] In one embodiment of the present application, the interception assembly includes a connecting ring 211 sleeved on the stirring shaft 22, and the connecting ring 211 is fixed with an interception net 212 on the outside that is in sliding contact with the inner wall of the flocculation cylinder 2; the inner wall of the connecting ring 211 is provided with a plurality of clearance holes 213, and a sliding rod 215 elastically slides in the clearance hole 213, and the sliding rod 215 extends out of the clearance hole 213 and is fixed with a threaded block 217, and the threaded block 217 is threadedly connected to a threaded cylinder 218 sleeved and fixed on the stirring shaft 22. The inner wall of the connecting ring 211 is provided with a plurality of clearance holes 213, in which an electromagnet 214 is fixedly connected. One end of the sliding rod 215 located in the clearance hole 213 is fixedly connected to a permanent magnet 216. The permanent magnet 216 and the electromagnet 214 repel each other. A return spring 219 is fixedly connected between the permanent magnet 216 and the electromagnet 214. When it is necessary to clean the flocculent matter, the electromagnet 214 is energized, so that the electromagnet 214 and the permanent magnet 216 repel each other, and the threaded block 217 is pushed out through the sliding rod 215. And it contacts the threaded barrel 218. When the threaded block 217 contacts the threaded barrel 218, a threaded connection is generated. The rotation of the stirring shaft 22 drives the connecting ring 211 to rise, and then drives the intercepting net 212 to rise together, lifting the flocculent and discharging it from the flocculation barrel 2; when it reaches the designated position and the flocculent is discharged, the electromagnet is powered off, and the reset spring 219 separates the threaded block 217 from the threaded barrel 218. The intercepting net 212 falls back to its initial position under the action of gravity, intercepting and separating the flocculent again.

[0075] In one embodiment of the present application, the bottom filter 24 and the interception net 212 are both configured in an inverted bucket shape with the middle tilted toward both sides, so as to facilitate the scattering and discharge of flocculants to the surroundings.

[0076] In one embodiment of the present application, the inner wall of the flocculation cylinder 2 is provided with a plurality of longitudinal guide grooves 220. A reinforcement ring 221 is fixedly attached to the outer ring of the interception net 212. A plurality of guide blocks 222 corresponding to the guide grooves 220 are fixedly attached to the outer wall of the reinforcement ring 221. The guide blocks 222 extend into and are slidably connected to the guide grooves 220. The guide grooves 220 and guide blocks 222 function to ensure that the interception net 212 can only be raised and lowered, but not rotated. An elastic rope 223 is connected between the bottom end of the guide groove 220 and the guide block 222. After the threaded block 217 separates from the threaded cylinder 218, the elastic rope assists in returning the interception net 212 to its original position.

[0077] In an extended embodiment of the present application, the elastic rope 223 can be replaced with a winding wheel with an automatic reset function. The winding wheel is installed at the bottom end of the wire groove, and the pull rope wound on it is fixed to the guide block 222 to assist in resetting the interception net 212.

[0078] In one embodiment of the present application, a fixed cylinder 225 is fixed to the top of the stirring shaft 22, and a cleaning rack 224 is fixed to the outside of the fixed cylinder 225, which is arranged corresponding to the interception net 212. A plurality of cleaning brushes 226 are fixed to the bottom of the cleaning rack 224, and the cleaning brushes 226 are in sliding contact with the top surface of the interception net 212. When the connecting ring 211 is raised to the top, it abuts against the fixed cylinder 225. When the force gradually increases, the force between the threaded cylinder 218 and the threaded block 217 increases, causing the permanent magnet 216 and the electromagnet 214 to approach each other, thereby causing the connecting ring 211 to no longer rise or fall. At the same time, the fixed cylinder 225 drives the cleaning brushes 226 under the cleaning rack 224 to scrape the surface of the interception net 212, sweeping the flocs into the separation cylinder 3, thereby achieving automatic cleaning of the flocs and reducing blockage. The raising and lowering time and interval of the interception net 212 can be set according to the water flow rate and flocculation speed.

[0079] In one embodiment of the present application, the cleaning brush 226 is tilted to improve the efficiency of floc discharge.

[0080] In one embodiment of the present application, a plurality of positioning holes 227 are provided at the bottom end of the fixed cylinder 225, and a positioning rod 228 is slidably connected in the positioning hole 227, and a plurality of positioning rods 228 are slidably connected at the bottom ends thereof with a positioning ring 229, and the positioning ring 229 abuts against the connecting ring 211; a positioning spring 230 is fixed between the top end of the positioning rod 228 and the top end of the positioning hole 227, which reduces the impact and friction between the connecting ring 211 and the positioning cylinder, improves the stability, and extends the service life of the equipment.

[0081] In one embodiment of the present application, the separation drum 3 includes a first filter screen 32 fixed to the bottom end of the housing 1 and arranged around the flocculation drum 2. A spacer cylinder 33 is fixed to the top of the first filter screen 32, the top of which is lower than the top of the flocculation drum 2. A second filter screen 34 is fixed to the top of the spacer cylinder 33, which is inclined toward the inner wall of the housing 1. Several slag discharge drums 4 are connected to the lower ends of the second filter screen 34. The outer wall of the separation screen 31 is slidably connected to the inner wall of the first filter screen 32 and the inner wall of the spacer cylinder 33. Water overflows from the top of the flocculation drum 2 into the separation drum 3, falls onto the separation screen 31, and then falls through the first filter screen and is discharged from the first outlet pipe 15. A telescopic rod 36 is fixed to the bottom end of the separation screen 31. The telescopic rod 36 drives the separation screen 31 upward and downward, pushing the floccules that fall on the separation screen 31 onto the second filter screen 34, where the remaining water is filtered and discharged through the second outlet pipe 16. The remaining floccules are discharged from the slag discharge drum 4.

[0082] In one embodiment of the present application, a partition plate 35 is fixedly connected between the first filter screen and the isolation cylinder 33 to enhance the connection strength and provide separation at the same time. The second water outlet pipe 16 is higher than the partition plate 35 .

[0083] In one embodiment of the present application, the slag discharge barrel 4 includes a barrel 49 fixedly connected to the outer shell 1 and connected to the lower end of the second filter screen 34. A slag discharge motor 41 is installed at the end of the barrel 49. The slag discharge motor 41 is transmission-connected to an extrusion shaft 42 rotatably connected to the barrel 49. The extrusion shaft 42 extends into the outer shell 1 and is rotatably connected to the second filter screen 34. A spiral conveying piece 43 is fixedly connected to the extrusion shaft 42, and the spacing of the spiral conveying pieces 43 gradually decreases toward the side away from the outer shell 1. When the slag discharge motor 41 is started, the spiral conveying piece 43 is driven to rotate by the extrusion shaft 42. Flocculants that fall onto the outer edge of the second filter screen 34 are drawn into the slag discharge barrel 4 by the rotating spiral conveying piece 43. The slag discharge motor 41 is transmission-connected to an extrusion shaft 42 rotatably connected to the barrel 49. The extrusion shaft 42 extends into the outer shell 1 and is rotatably connected to the second filter screen 34. A spiral conveying piece 43 is fixed to the extrusion shaft 42, and the spacing of the spiral conveying pieces 43 gradually decreases toward the side away from the outer shell 1. When the slag discharge motor 41 is started, the spiral conveying piece 43 is driven to rotate by the extrusion shaft 42. Flocculants that fall onto the outer edge of the second filter screen 34 are drawn into the slag discharge barrel 4 by the rotating spiral conveying piece 43. The slag discharge motor 41 is extruded by the spiral conveying piece 43 with gradually decreasing spacing, expelling the moisture inside. The slag discharge motor 41 is then discharged from the slag discharge port 44 at the end away from the outer shell 1. This

[0084] In one embodiment of the present application, a plurality of water filter holes 45 are formed through a through-hole at the bottom end of the cylinder 49. A water collection box 46 is fixedly connected to the bottom end of the cylinder 49, and the water collection box 46 is arranged corresponding to the water filter holes 45. As the spacing between the spiral conveying blades 43 gradually decreases, water in the flocculent material is squeezed out. The squeezed water falls into the water filter holes 45 into the water collection box 46, and then enters the second water outlet pipe 16 from the water collection box 46 through the water collection pipe 47.

[0085] In one embodiment of the present application, the bottom end of the water collecting box 46 is tilted to reduce water accumulation; a one-way valve 48 is provided on the water collecting pipe 47 between the second water outlet pipe 16 and the water collecting box 46, and the one-way valve 48 opens in one direction toward the second water outlet pipe 16 to prevent water backflow.

[0086] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0087] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. An energy-saving and environmentally friendly tailwater treatment device for aquaculture factory, characterized in that: include: A housing (1), wherein the bottom end of the housing (1) is provided with a water inlet assembly for pumping in aquaculture tail water; A flocculation cylinder (2) is coaxially arranged in the inner cavity of the housing (1), and the water inlet assembly is connected to the bottom end of the flocculation cylinder (2); a stirring assembly for stirring the aquaculture tail water is rotatably connected in the flocculation cylinder (2), an interception assembly is longitudinally slidably provided on the stirring assembly, and the interception assembly is slidably connected to the side wall of the flocculation cylinder (2); A separation cylinder (3), the separation cylinder (3) is arranged in the housing (1) and is coaxially sleeved outside the flocculation cylinder (2), a separation net (31) is provided in the separation cylinder (3) so as to slide upward and downward, and the separation net (31) is in sliding contact with the outer wall of the flocculation cylinder (2) and the inner wall of the separation cylinder (3); A slag discharge barrel (4), the slag discharge barrel (4) is arranged outside the shell (1), and the slag discharge barrel (4) is connected to the outlet of the separation barrel (3).

2. The energy-saving and environmentally friendly tailwater treatment device for aquaculture according to claim 1 is characterized by: The water inlet assembly comprises a water inlet box (12) arranged at the bottom of the housing (1); the top end of the water inlet box (12) is connected to the inner cavity of the flocculation cylinder (2) through a plurality of water injection pipes (13); a one-way module is provided in the water injection pipe (13) and is opened in one direction toward the flocculation cylinder (2).

3. The energy-saving and environmentally friendly tailwater treatment device for aquaculture according to claim 1 is characterized by: The stirring assembly comprises a stirring motor (21) arranged at the bottom end of the housing (1); the stirring motor (21) is connected to a stirring shaft (22) in a transmission manner; the top end of the stirring shaft (22) extends into the housing (1) and is fixedly connected to a plurality of stirring teeth (23); a bottom filter (24) is rotatably connected to the stirring shaft (22); the bottom filter (24) is located between the intercepting assembly and the stirring teeth (23); and the bottom filter (24) is fixedly connected to the side wall of the flocculation cylinder (2).

4. The energy-saving and environmentally friendly tailwater treatment device for aquaculture according to claim 3 is characterized by: A medicine adding box (25) is provided at the bottom end of the shell (1), and the medicine adding box (25) is rotatably sleeved on the outside of the stirring shaft (22); a medicine adding chamber (26) is provided in the stirring shaft (22), and a medicine distributing chamber (27) connected to the medicine distributing chamber (26) is provided in the stirring teeth (23), and a plurality of medicine outlet holes (28) are provided through the outer wall of the medicine distributing chamber (27); the medicine adding box (25) is connected to the medicine adding chamber (26) through a plurality of medicine inlet holes (29).

5. The energy-saving and environmentally friendly tailwater treatment device for aquaculture according to claim 3 is characterized by: The interception assembly comprises a connecting ring (211) sleeved on the stirring shaft (22), and an interception net (212) is fixedly connected to the outside of the connecting ring (211) and is in sliding contact with the inner wall of the flocculation cylinder (2); a plurality of clearance holes (213) are opened on the inner wall of the connecting ring (211), and a sliding rod (215) elastically slides in the clearance holes (213), and the sliding rod (215) extends out of the clearance holes (213) and is fixedly connected to a threaded block (217), and the threaded block (217) is threadedly connected to a threaded cylinder (218) sleeved and fixedly connected to the stirring shaft (22).

6. The energy-saving and environmentally friendly tailwater treatment device for aquaculture according to claim 5 is characterized by: The inner wall of the flocculation cylinder (2) is provided with a plurality of longitudinally arranged guide grooves (220); the outer ring of the interception net (212) is fixedly connected with a reinforcement ring (221); the outer wall of the reinforcement ring (221) is fixedly connected with a plurality of guide blocks (222) arranged corresponding to the guide grooves (220); the guide blocks (222) extend into the guide grooves (220) and are slidably connected to the guide grooves (220).

7. The energy-saving and environmentally friendly tailwater treatment device for aquaculture according to claim 5 is characterized by: The top end of the stirring shaft (22) is fixedly connected to a fixed cylinder (225), the fixed cylinder (225) is fixedly connected to a cleaning rack (224) corresponding to the intercepting net (212), the bottom end of the cleaning rack (224) is fixedly connected to a plurality of cleaning brushes (226), and the cleaning brushes (226) are in sliding contact with the top surface of the intercepting net (212).

8. The energy-saving and environmentally friendly tailwater treatment device for aquaculture according to claim 1 is characterized by: The separation cylinder (3) includes a first filter screen (32) fixedly connected to the bottom end of the shell (1) and arranged around the flocculation cylinder (2); the top end of the first filter screen (32) is fixedly connected to an isolation cylinder (33), and the top end of the isolation cylinder (33) is lower than the top end of the flocculation cylinder (2); the top end of the isolation cylinder (33) is fixedly connected to a second filter screen (34) inclined toward the inner wall of the shell (1), and several slag discharge cylinders (4) are respectively connected to the lower end of the second filter screen (34); the outer wall of the separation screen (31) is respectively slidably connected to the inner wall of the first filter screen (32) and the inner wall of the isolation cylinder (33).

9. The energy-saving and environmentally friendly tailwater treatment device for aquaculture according to claim 8, characterized in that: The slag discharge barrel (4) comprises a barrel (49) fixedly connected to the outer shell (1) and connected to the lower end of the second filter screen (34); a slag discharge motor (41) is installed at the end of the barrel (49); the slag discharge motor (41) is transmission-connected to an extrusion shaft (42) rotatably connected to the barrel (49); the extrusion shaft (42) extends into the outer shell (1) and is rotatably connected to the second filter screen (34); a spiral conveying piece (43) is fixedly connected to the extrusion shaft (42); the spacing of the spiral conveying piece (43) gradually decreases toward the side away from the outer shell (1).

10. The energy-saving and environmentally friendly tailwater treatment device for aquaculture according to claim 9, characterized in that: The bottom end of the cylinder (49) is penetrated by a piece with a plurality of water filtering holes (45). The bottom end of the cylinder (49) is fixedly connected with a water collecting box (46), and the water collecting box (46) is arranged corresponding to the water filtering holes (45).

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