A high-precision wastewater filtration system

Abstract

This invention relates to a high-precision wastewater filtration system, belonging to the field of wastewater filtration technology. The technical solution provided by this invention includes: a sedimentation component for sedimenting large particles, located in area A on the upper right side of the frame; a magnetic separation component for adsorbing fine magnetic substances, connected via a pipe to one side of the sedimentation component's outlet end, also located in area A; a treatment component, located in area B, with micron-level non-woven fabric filtration at the top and receiving filtered wastewater at the bottom, and also located at the bottom of the magnetic separation component to receive wastewater discharged from the magnetic separation component; two filter tanks, located in area C, connected to the treatment component via a multi-stage centrifugal pump; a suction component, floating inside the treatment component; an oil skimming component, receiving and filtering oil residue sucked out by the suction component, with the filtered wastewater then discharged back into the treatment component, located in area A; and an oil content detector located in the middle of the suction component.

Description

Technical Field

[0001] This invention relates to the field of wastewater filtration technology, and in particular to a high-precision wastewater filtration system. Background Technology

[0002] In the production processes of metal processing, parts cleaning, grinding and deburring, a large amount of wastewater containing metal shavings, suspended particles, and oil is often generated. This type of wastewater has a complex composition, containing both large particulate impurities and fine metal powder, as well as floating oil and emulsified oil. Direct discharge will not only cause environmental pollution but also increase the company's wastewater treatment costs. If the goal is to recycle and reuse the water, it must be treated thoroughly.

[0003] Current common wastewater treatment methods mostly use simple sedimentation tanks, filter cotton, or single-stage filter tanks. Although these methods can remove some larger particles, they are not very effective at treating fine metal debris, suspended solids, and oil floating on the water surface. Especially when the water is repeatedly recycled, oil and fine impurities will continue to accumulate, causing the filter structure to become easily clogged, the water quality to gradually deteriorate, and affecting the normal use of subsequent equipment.

[0004] In addition, although some equipment has added magnetic separation or fine filtration structures, the arrangement of each treatment component is relatively scattered and the connecting pipelines are complex, which can easily lead to problems such as high water flow resistance, pipeline blockage and inconvenient maintenance. Once a filter unit needs to be replaced or repaired, it will often affect the operation of the entire system and make it difficult to achieve continuous and stable operation.

[0005] More notably, many devices for treating surface oil lack dedicated skimming structures, causing the oil to enter the filtration system with the water, reducing filtration efficiency and accelerating filter media contamination. Furthermore, the lack of real-time monitoring of oil content in the water makes it difficult to assess water quality promptly, impacting the effectiveness of recycling.

[0006] Therefore, how to perform graded treatment of wastewater within a limited space, while taking into account multiple functions such as sedimentation, magnetic separation, fine filtration, deep filtration and surface oil skimming, and optimizing the structural layout, reducing pipeline complexity, improving maintenance convenience, and achieving stable recycling of wastewater, has become the direction that urgently needs to be improved for such wastewater treatment equipment.

[0007] In view of the above, we provide a high-precision wastewater filtration system to solve the above problems. Summary of the Invention

[0008] To address the above issues, this invention provides a high-precision wastewater filtration system. This device utilizes a multi-stage synergistic structure involving sedimentation separation, magnetic separation, fine filtration, depth filtration, and oil skimming to achieve graded removal of particulate impurities, metal fragments, suspended solids, and surface oil from wastewater. Combined with a rational spatial layout and circulation pipeline design, the various treatment components are compactly connected and operate stably. While ensuring progressively improved water quality, it reduces the risk of pipeline blockage and filter media contamination, enhances the equipment's continuous operating capacity and ease of maintenance, thereby achieving stable wastewater recycling.

[0009] A high-precision wastewater filtration system, comprising:

[0010] The first frame, after being welded as a whole, is divided into areas A, B and C;

[0011] A sedimentation component, used to sediment large particles, is located in area A on the upper right side of the first frame;

[0012] The magnetic separation component, used to adsorb fine magnetic substances, is connected to the sedimentation component via a pipe and is located on one side of the outlet end, in zone A.

[0013] The treatment component, with micron-level non-woven fabric filtration at the top and wastewater collection at the bottom, is located in Zone B and at the bottom of the magnetic separation component to collect the wastewater discharged from the magnetic separation component.

[0014] There are two sets of filter tanks located in Zone C, and they are connected to the treatment components via multi-stage centrifugal pumps.

[0015] The suction component is floating inside the processing component;

[0016] The oil skimming component receives the oil sludge sucked out by the suction component and filters it. The wastewater after filtration is discharged back into the treatment component, which is located in area A.

[0017] The oil content detector is located in the middle of the suction assembly.

[0018] Preferably, the sedimentation assembly includes a sedimentation tank, a first water-bumping plate, a water inlet unit, a water outlet unit, and a discharge unit, which are fixedly mounted on the first frame via support legs;

[0019] There are multiple first water-bumping plates of different heights, which are arranged in parallel inside the sedimentation tank.

[0020] The water inlet unit is located on one side of the sedimentation tank, and wastewater is introduced into the sedimentation tank through the water inlet unit;

[0021] The water outlet unit is located on the sedimentation tank on the symmetrical side of the water inlet unit;

[0022] The discharge unit is located at the bottom of the sedimentation tank.

[0023] Preferably, the magnetic separator assembly includes a magnetic separator, a water tank, a float level switch, and a drain pipe;

[0024] The water tank is fixedly installed on the first frame by support legs. The magnetic separator is connected to the water tank through a pipeline to obtain magnetic liquid separation. The float level switch is installed in the water tank and moves up and down with the liquid level. The float level switch moves as the liquid level rises and triggers the drainage control, so that the drain pipe at the bottom of the water tank automatically opens to complete the drainage operation. After the liquid level drops, the float returns to its original position and closes the drainage channel.

[0025] Preferably, the processing components include a central processing water tank, an immersion heater, a filtration unit, and a waste collection box;

[0026] The central treatment water tank is located directly below the drain pipe and is used to collect wastewater.

[0027] The immersion heater is located at the bottom of the central treatment tank and is used to heat the wastewater.

[0028] The filter unit is slidably mounted on top of the central treatment water tank;

[0029] The waste collection frame is located on one side of the central treatment water tank and is used to receive the waste residue filtered by the filtration unit.

[0030] Preferably, the central treatment water tank is provided with a second water-turning plate inside, and the lower side of the second water-turning plate is provided with an opening; the second water-turning plate divides the central treatment water tank into cavity A and cavity B, the space of cavity B is larger than that of cavity A, and cavity A is connected to the suction end of a multi-stage centrifugal pump through a pipe; the immersion heater is provided in the cavity B area, and the bottom of the central treatment water tank is inclined from one end of the second water-turning plate to the other end, so that the inner bottom is sloped.

[0031] Preferably, the filtration unit includes a second frame, a paper tape machine, rollers, and a baffle plate;

[0032] The top wall of the second frame is grid-like;

[0033] The paper tape machine is installed on the second frame, with one end located on the left side of the second frame for outputting clean filter paper; the other end is located on the right side of the second frame and above the waste collection box for winding and recycling waste filter paper.

[0034] At least four rollers are provided, symmetrically arranged on both sides of the second frame. The upper surface of the central treatment water tank is provided with a matching slide rail, and the rollers can move repeatedly in a straight line on the slide rail.

[0035] The baffle plate is located on one side of the second frame, and a gap is reserved in the middle of the connection between the baffle plate and the second frame for the filter paper to pass through; the filter paper is introduced from the bottom of the baffle plate and led out from the top of the baffle plate.

[0036] Preferably, the filter tank transports the deeply filtered water to external water-using equipment via pipeline to achieve wastewater recycling; the flow path is switched between the two filter tanks through a pneumatic three-way ball valve.

[0037] Preferably, the suction assembly includes a suspension suction head and a delivery structure;

[0038] The suspended suction head is floating inside the central treatment water tank;

[0039] One end of the conveying structure is connected to the suspended suction head, and the other end is connected to the oil skimming component via a pneumatic pump.

[0040] Preferably, the oil skimming assembly includes a support frame, a drainage shaft, an oil filtering unit, and a slag separating unit;

[0041] The support frame is located in area A, and its inner cavity is provided with a partition plate, which divides the support frame into a first cavity and a second cavity.

[0042] The drainage shaft is located at the top of the first cavity;

[0043] The oil filtration unit has at least two sets, symmetrically arranged inside the first chamber;

[0044] The slag separation unit is located at the end of the first chamber away from the drainage shaft.

[0045] Preferably, the slag separating unit includes a partition frame and a guide frame;

[0046] The partition frame is located on the top of one side of the first cavity, and is U-shaped in general. It has a slot in the middle of the side facing the oil filter unit, and is vertical on the other side.

[0047] The guide frame is located at the top of one side of the first cavity, with a gap between it and the partition frame. The guide frame has an opening of the same size as the slot on one side facing the partition frame, and the other side is set as a downward slope.

[0048] The beneficial effects of the above technical solution are as follows:

[0049] 1. This device achieves the step-by-step removal of large particulate impurities, metal fragments, suspended solids and surface oil in wastewater through the synergistic effect of sedimentation separation, magnetic separation, fine filtration, deep filtration and oil skimming, which significantly improves the water purification effect and ensures stable and reliable reclaimed water quality.

[0050] 2. By dividing the sedimentation unit, magnetic separation unit, treatment unit, filter tank and oil skimming unit into zones and rationally planning the positional relationship between each unit, the length of connecting pipelines is effectively shortened, pipeline crossings and bends are reduced, water flow resistance and blockage risk are reduced, the stability and compactness of the whole machine operation are improved, and it is also convenient for later inspection and maintenance.

[0051] 3. The system adopts a dual-filter tank alternating operation and float-type automatic drainage structure, which achieves continuous filtration and stable drainage without the need for complex electrical control intervention. This ensures continuous water supply to the system and facilitates individual tank maintenance or filter media replacement, thereby improving the continuity of equipment operation and filtration efficiency.

[0052] 4. By using a suspended suction head in conjunction with an oil skimming component, the floating oil on the water surface is specifically sucked up and separated. In addition, an oil content detector monitors the oil content in real time, forming a circulating oil skimming and re-filtration mechanism, which effectively prevents oil from entering the circulation system and extends the service life of the filter structure. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0054] Figure 2 This is a front view schematic diagram of the present invention;

[0055] Figure 3 This is a schematic diagram of the invention from the right side;

[0056] Figure 4 This is a schematic diagram of the left side of the present invention;

[0057] Figure 5 This is a three-dimensional schematic diagram of the entire invention;

[0058] Figure 6 This is a schematic diagram of the magnetic separation component structure of the present invention;

[0059] Figure 7 This is a schematic diagram of the sedimentation tank structure of the present invention;

[0060] Figure 8 This is a schematic diagram of the water outlet unit structure of the present invention;

[0061] Figure 9 This is a schematic diagram of the water baffle structure of the present invention;

[0062] Figure 10 This is a schematic diagram of the suction component structure of the present invention;

[0063] Figure 11 This is a schematic diagram of the oil skimming component structure of the present invention;

[0064] Figure 12 This is a schematic diagram of the slag separation unit structure of the present invention;

[0065] Figure 13 This is a schematic diagram of the structure of the oil content detector of the present invention.

[0066] In the diagram: 1. First frame; 101. Area A; 102. Area B; 103. Area C;

[0067] Sedimentation assembly; 201, sedimentation tank; 202, first water-bumping plate; 203, water inlet unit; 204, water outlet unit; 205, discharge unit;

[0068] Magnetic separator assembly; 301, magnetic separator; 302, water tank; 303, float level switch; 304, drain pipe;

[0069] Processing components; 401, Central treatment water tank; 402, Immersion heater; 403, Filter unit; 404, Waste collection box; 405, Second water tipping plate;

[0070] 4031, Second frame; 4032, Paper tape machine; 4033, Roller; 4034, Water baffle;

[0071] Filter canister;

[0072] Suction assembly; 601, Suspended suction head; 602, Conveying structure;

[0073] Oil skimming assembly; 701, support frame; 702, drain shaft; 703, oil filter unit; 704, slag separation unit;

[0074] 7041, partition frame; 7042, guide frame;

[0075] Oil content detector. Detailed Implementation

[0076] The foregoing and other technical contents, features and effects of the present invention are described in conjunction with the appendix below. Figures 1 to 13 As will be clearly shown in the detailed description of the embodiments, all structural contents mentioned in the following embodiments are based on the accompanying drawings.

[0077] This application proposes a high-precision wastewater filtration system, as detailed below:

[0078] For reference Figures 1-6 This application describes a process where wastewater undergoes sedimentation, magnetic separation, and multi-stage filtration to remove impurities and meet the water quality requirements for recycling. Simultaneously, an oil skimming component is added to the filtration process to collect and remove oil floating on the surface during settling.

[0079] Through the synergistic effect of sedimentation, magnetic separation and multi-stage filtration, particulate impurities, metal debris and suspended solids in wastewater can be effectively removed; with the help of the oil skimming component, surface oil is specifically removed, preventing oil from entering subsequent filtration units or circulation systems with the water, thereby improving overall purification efficiency, reducing the filtration burden, ensuring stable quality of reclaimed water and extending the service life of the filtration structure.

[0080] For reference Figures 1-6 The first frame 1 is constructed entirely of cold-formed hollow square tubing welded together, with casters at the bottom for easy movement and positioning of the equipment. After welding, the first frame 1 is internally divided into three zones: A 101, B 102, and C 103, for the separate arrangement of various functional devices. Zones A 101 and B 102 are located vertically on the same side, while Zone C 103 is independently located on another side. This zoning ensures a clear and orderly layout of the entire machine, facilitating observation and subsequent inspection, maintenance, and pipeline troubleshooting.

[0081] Furthermore, the sedimentation component 2 and the magnetic separation component 3 are located in area A 101 on the upper right side of the first frame 1, and the oil skimming component 7 is also arranged in area A 101; the treatment component 4 is located in area B 102 on the lower right side of the first frame 1; and the filter tank 5 is independently located in area C 103. By rationally planning the spatial positions of each functional component, the length of the connecting pipelines between units can be effectively shortened, reducing pipeline crossings and bends, thereby reducing water flow resistance and the risk of blockage, while improving the overall structural compactness and operational stability.

[0082] For reference Figures 6-8 The first stage of filtration is completed through sedimentation component 2;

[0083] The sedimentation assembly 2 is used to settle large particles. Specifically, it includes a sedimentation tank 201, a first water-bumping plate 202, an inlet unit 203, an outlet unit 204, and a discharge unit 205, which are fixedly installed on the first frame 1 by support legs. There are multiple first water-bumping plates 202 with different heights, which are arranged in parallel inside the sedimentation tank 201. When sewage flows in from one side, it will be blocked by the first water-bumping plates 202 of different heights to reduce the flow rate, and the large particles will settle at the bottom first.

[0084] The inlet unit 203 is located on one side of the sedimentation tank 201 and is used to introduce wastewater into the sedimentation tank 201; the outlet unit 204 is located on the side of the sedimentation tank 201 opposite to the inlet unit 203. The inlet unit 203 and the outlet unit 204 are located at the same height on both sides of the sedimentation tank 201.

[0085] Wastewater enters the sedimentation tank 201 from the inlet unit 203 at the top of one side. Due to the obstruction of the first tipping plate 202, it is forced to change its flow direction and flow downwards slowly, thus extending the water's residence path within the tank and facilitating the settling and separation of impurities. The clearer upper layer of water after sedimentation is then discharged from the outlet unit 204 at the top of the other side.

[0086] further;

[0087] The water inlet unit 203 is equipped with at least two inlets for introducing wastewater, and the two inlets are controlled independently. When one side of the pipeline is blocked or the flow is abnormal, the other inlet can still supply water normally, thereby avoiding any impact on subsequent treatment processes and improving the continuity and reliability of system operation.

[0088] The water outlet unit 204 includes two outlets, one of which serves as the normal water outlet channel and the other as a backup water outlet channel. When the water flow rate increases instantaneously or the main outlet is overloaded, the water can be diverted through the backup outlet to prevent water overflow and ensure stable system operation. The discharge unit 205 is located at the bottom of the sedimentation tank 201.

[0089] There are multiple discharge units 205, which are located at the bottom of the sedimentation tank 201 and are used to discharge the dirt that has settled to the bottom.

[0090] For reference Figure 6 The second stage of filtration is completed through the magnetic separation component 3;

[0091] The magnetic separation component 3 is used to adsorb and separate fine magnetic particles in wastewater. It is connected to the outlet of the sedimentation component 2 via a pipeline. After the wastewater has completed sedimentation treatment in the sedimentation component 2, it is transported through the pipeline into the magnetic separation component 3 for magnetic separation and filtration to further remove residual metal particles and magnetic impurities in the water.

[0092] Specifically, the magnetic separation component 3 includes a magnetic separator 301, a water tank 302, a float level switch 303, and a drain pipe 304. The water tank 302 is securely mounted on the first frame 1 via support legs and is used to receive and temporarily store the liquid processed by the magnetic separator 301. The magnetic separator 301 is connected to the water tank 302 via connecting pipes, allowing the magnetically separated liquid to be temporarily stored and its level regulated within the water tank 302.

[0093] The float level switch 303 is installed inside the water tank 302 and can float up and down with the rise and fall of the liquid level. When the liquid level in the water tank 302 rises to the preset height, the float level switch 303 moves upward and triggers the drainage control signal, causing the drain pipe 304 located at the bottom of the water tank 302 to open automatically and start the drainage operation; as the liquid level gradually drops, the float level switch 303 falls back to the initial position, and the drain pipe 304 closes, thus forming an automatic opening and closing drainage control process.

[0094] Through the above structural design, water tank 302 can automatically discharge based on liquid level changes when the magnetic separation process continues, without the need for additional electrical control intervention. This ensures the stability of the liquid level in the tank and avoids the risk of overflow due to excessively high liquid levels. Simultaneously, the use of a float-type mechanical linkage control for drainage improves the reliability and stability of the system operation, reduces the impact of electrical control failures on overall operation, and is suitable for liquid temporary storage and automatic discharge under continuous processing conditions.

[0095] For reference Figures 1-6 The third level of filtering is achieved through processing component 4;

[0096] The treatment component 4 has a micron-level non-woven fabric filter at the top and a wastewater collection point at the bottom. It is located at the bottom of the magnetic separator 3 and collects the wastewater discharged from the magnetic separator 3.

[0097] The treatment component 4 includes a central treatment water tank 401, an immersion heater 402, a filter unit 403, and a waste collection frame 404. The central treatment water tank 401 is located directly below the drain pipe 304 and is used to receive wastewater from upstream. The immersion heater 402 is arranged in the bottom area of ​​the central treatment water tank 401 and is used to heat and keep the water warm. The filter unit 403 is slidably installed at the top opening of the central treatment water tank 401. The waste collection frame 404 is located on one side of the central treatment water tank 401 and is used to collect the waste filter media and filter residue replaced by the filter unit 403.

[0098] When wastewater enters treatment component 4, it first undergoes primary fine filtration through the micron-sized non-woven fabric laid in filter unit 403, trapping fine suspended impurities. The filtered water then enters the central treatment tank 401 for temporary storage and treatment. During the treatment process, immersion heater 402 continuously heats the water, maintaining a suitable temperature in the tank. This prevents the water from freezing in low-temperature environments and facilitates the softening of oil and the settling of impurities, thereby improving the subsequent treatment effect.

[0099] Meanwhile, the filter unit 403 adopts a sliding and detachable structure, which facilitates quick removal for filter media replacement and maintenance. The waste collection box 404 is used to collect the used non-woven fabric and intercepted waste residue, avoiding secondary pollution and facilitating unified cleaning. Through the combination of the above structures, filtration, heating and waste collection are integrated into a single processing flow, improving maintenance convenience and overall processing efficiency.

[0100] Specific;

[0101] For reference Figures 1-6 , Figure 9The central treatment water tank 401 is equipped with a second water-turning plate 405, with a water passage opening in the lower middle part of the second water-turning plate 405. The second water-turning plate 405 divides the interior of the central treatment water tank 401 into chamber A and chamber B. The top of the two chambers is not sealed, and the top areas are interconnected, so there is no uncontrolled oil sludge floating on the top of chamber A. The volume of chamber B is larger than that of chamber A. Chamber A is connected to the suction end of a multi-stage centrifugal pump through a pipe, and is used to extract relatively stable and relatively clean water.

[0102] An immersion heater 402 is located in the B chamber area to heat the water entering the water tank. The inner bottom surface of the central treatment water tank 401 is inclined from one end to the other by the second water-turning plate 405, forming a slope structure at the bottom. This facilitates the concentration of deposited impurities to the lower side under the action of gravity, thereby reducing the amount of impurities entering the A chamber, improving the stability and cleanliness of the extracted water, and facilitating subsequent treatment of dirt.

[0103] For reference Figure 6 , Figure 9 and Figure 10 The filter unit 403 includes a second frame 4031, a paper tape machine 4032, a roller 4033, and a baffle plate 4034;

[0104] The inner top wall of the second frame 4031 is grid-like, and its bottom grid-like area is snapped onto the second frame 4031. This grid area can be removed when cleaning is required later.

[0105] The paper tape machine 4032 is mounted on the second frame 4031. One end of the paper tape machine is located on the left side of the second frame 4031 for outputting clean filter paper; the other end is located on the right side of the second frame 4031, above the waste collection frame 404, for winding and recycling waste filter paper. During the winding process, some dirt may be carried away, preventing it from falling to the ground or other areas when stationary. The waste collection frame 404 is used to catch this dirt and can also catch used filter cloths that have been removed. It should be noted that, in one embodiment, the paper tape machine 4032 consists of two rollers controlled by servo motors. Micron-sized nonwoven fabric is arranged on the rollers, one for feeding and the other for winding. After feeding, the micron-sized nonwoven fabric is located on the top of a mesh, which supports its stable operation.

[0106] At least four rollers 4033 are provided, symmetrically arranged on both sides of the second frame 4031. The upper surface of the central treatment water tank 401 is provided with a matching slide rail. The rollers 4033 can move repeatedly in a straight line on the slide rail. When movement is required, they are moved by sliding. Because of the matching slide rail, the original movement trajectory will not be changed. When positioning, the rollers 4033 are fixed in the slide rail by a locking device to prevent them from changing position during operation.

[0107] A baffle plate 4034 is disposed on one side of the second frame 4031, and a gap is reserved in the middle of the connection between the baffle plate 4031 and the second frame 4031 for the filter paper to pass through. The filter paper is introduced from the bottom of the baffle plate 4034 and led out from the top of the baffle plate 4034 (see details). Figure 9 ).

[0108] This structural design allows the filter paper to pass through the baffle plate and scrape water during replacement and output, effectively blocking and carrying away the wastewater adhering to its surface. This prevents the filter paper from carrying too much liquid at the output end, which could cause dripping and contamination, thus keeping the external environment of the equipment clean and improving the convenience and hygiene of the replacement operation.

[0109] For reference Figures 1-6 The fourth stage of filtration is achieved through filter tank 5;

[0110] Two sets of filter tanks 5 are configured and connected to the treatment component 4 via a multi-stage centrifugal pump to form a filtration loop. The deeply filtered water is transported from the filter tanks 5 to external water-using equipment via pipelines, achieving wastewater recycling. The port of the treatment component 4 that delivers wastewater to the filter tanks 5 is located in the lower part of its surface near the filter tank 5.

[0111] The two sets of filter tanks 5 are switched via a pneumatic three-way ball valve, allowing them to operate alternately. This ensures continuous water supply while facilitating individual tank maintenance or filter media replacement without affecting the overall system operation. Alternating use not only improves the continuity and stability of system operation but also enhances overall filtration efficiency and filter media utilization.

[0112] For reference Figures 11-13 The fifth stage of filtration is achieved through the suction component 6 and the oil skimming component 7;

[0113] After filtration by treatment component 4, the water surface still contains oil sludge. This oil sludge can be sucked up and treated again by the oil skimming component 7. After treatment, the water is recycled back to treatment component 4, and then from treatment component 4 back to filter tank 5, and so on, completing all filtration processes in a cycle.

[0114] The removal of oil sludge from the water surface is accomplished by a suction assembly 6, which includes a suspended suction head 601 and a conveying structure 602. The suspended suction head 601 floats within the central treatment tank 401. One end of the conveying structure 602 is connected to the suspended suction head 601, and the other end is connected to the oil skimming assembly 7 via a pneumatic pump. The suspended suction head 601, floating on top of the central treatment tank 401, consists of three floats arranged in a triangular shape. A suction port is located in the center of the triangle, and an output port at the top connects to the conveying structure 602. During suction, the pneumatic pump operates, drawing the wastewater from the top into the oil skimming assembly 7.

[0115] The pneumatic pump is located at the bottom of the skimming assembly 7, where the surrounding area is relatively open during maintenance, preventing parts from piling up and causing inconvenience during maintenance.

[0116] It should be noted that the conveying structure 602 is a combination of existing common pipes and valve bodies, which will not be described in detail in this application.

[0117] For reference Figures 10-13 The oil skimming assembly 7 includes a support frame 701, a drain shaft 702, an oil filtering unit 703, and a slag separating unit 704. The support frame 701 is located in area A 101, and its inner cavity is equipped with a partition plate, dividing the support frame 701 into a first cavity and a second cavity. The drain shaft 702 is arranged at the top of the first cavity to control the inflow of water. When the water level is high, the excess water is sucked out and discharged directly into the treatment assembly 4. During operation, the drain shaft 702 is opened synchronously, and the water will be extracted as long as the water level reaches the extractable range of the drain shaft 702. There are at least two sets of oil filtering units 703, symmetrically arranged in the first cavity. The slag separating unit 704 is located at the end of the first cavity away from the drain shaft 702.

[0118] The support frame 701 is used to receive the mixed oily wastewater conveyed by the conveying structure 602. The drain shaft 702 is adjusted during wastewater input to prevent excessive water volume from affecting the internal filtration efficiency. The wastewater first undergoes oil-water separation through the oil filtration unit 703, and then larger particles or sludge are removed through the sludge separation unit 704. The treated water flows to the first chamber or the second chamber for discharge, achieving efficient separation and discharge of oil, water, and solid impurities.

[0119] It should be noted that the oil filter unit 703 has a fixed frame, inside which dozens of stainless steel oil-absorbing plates are arranged at an angle. The oil-absorbing plates are evenly spaced on the fixed frame to form the oil filter unit 703. The function of the oil-absorbing plates is to adhere to the oil stains when the liquid flows through.

[0120] The slag separation unit 704 includes a partition frame 7041 and a guide frame 7042. The partition frame 7041 is located at the top of one side of the first cavity and has an overall U-shaped structure. A slot is opened in the middle of the side facing the oil filtration unit 703, and the other side is vertically arranged along the cavity direction. The guide frame 7042 is also arranged at the top of the first cavity and maintains a certain distance from the partition frame 7041. The guide frame 7042 has a through hole corresponding to the size of the slot on the side facing the partition frame 7041, and the other side has a downward sloping structure.

[0121] Impurities floating on the surface are guided into the second chamber through the partition frame 7041, while wastewater enters the guide frame 7042 through the partition. The guide frame 7042 is connected to a drain port, which is connected to the treatment component 4, and the wastewater after oil skimming is discharged back into the treatment component 4 and then into the filter tank 5.

[0122] The oil content detector 8 is located in the middle of the suction assembly 6 and is used to monitor the oil content in the wastewater in real time, so as to facilitate timely adjustment and control of the oil-water separation and oil skimming process.

[0123] It should be noted that after heating by the immersion heater 402, the water and oil separation of the wastewater can be promoted more effectively, which facilitates subsequent process operations. Secondly, the structures are interconnected and move through pipes, and the upper part of the pipes is equipped with corresponding valves to control the switch and the flow direction. The arrangement of the valves is a common existing technology, and will not be described in detail in this application.

[0124] The specific operating steps of the device are as follows:

[0125] First, the equipment is started and the wastewater to be treated is introduced into the sedimentation component 2 through the inlet unit 203. In the sedimentation tank 201, the wastewater is blocked by the first water-turning plates 202 at different heights, which reduces the flow rate and changes the flow direction. Large particles of impurities settle at the bottom and are periodically discharged through the discharge unit 205. The clearer water in the upper layer is discharged through the outlet unit 204 to enter the next treatment stage.

[0126] Secondly, the wastewater enters the magnetic separation component 3, where the magnetic separator 301 adsorbs and separates fine magnetic particles and metal debris from the water. The treated liquid is then temporarily stored in the water tank 302. When the liquid level rises to the set height, the float level switch 303 triggers the drain pipe 304 to automatically open, allowing the liquid to be discharged to the treatment component 4 below. When the liquid level drops, the drain is automatically shut off, achieving a continuous and stable transition.

[0127] Then, the wastewater enters treatment component 4, where it undergoes fine filtration through the micron-sized non-woven fabric laid in filter unit 403, trapping fine suspended solids. The filtered water then enters the central treatment tank 401. Immersion heater 402 heats and insulates the water, promoting the softening of oil and the settling of impurities. The water flows slowly through chambers A and B, separated by the second tipping plate 405. Deposited impurities concentrate along the inclined bottom, while the relatively clean water in chamber A is pumped out by a multi-stage centrifugal pump into filter tank 5.

[0128] Subsequently, the water enters two sets of alternating filter tanks 5 for deep filtration. The filtered water is then transported through pipelines to external water-using equipment for recycling. At the same time, some water flows back to the central treatment tank 401 for further settling, forming a circulating filtration path.

[0129] Finally, for the oil sludge floating on the water surface during the settling process, the suspended suction head 601, under the action of a pneumatic pump, draws the oily water into the oil skimming assembly 7. The mixed oily wastewater then passes sequentially through the oil filtration unit 703 and the sludge separation unit 704 to separate oil, water, and solid impurities. The treated water is then returned to the treatment assembly 4 and re-enters the filtration process. The oil content detector 8 monitors the oil content in the water in real time to adjust the oil skimming rhythm in a timely manner, ensuring that the overall water quality remains stable and meets standards.

[0130] The above description is only for illustrating the present invention and should be understood as not being limited to the above embodiments. Various modifications that conform to the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A high-precision wastewater filtration system, characterized in that, include: The first frame (1) is divided into area A (101), area B (102) and area C (103) after being welded as a whole. A sedimentation component (2) for sedimenting large particles is located in area A (101) on the upper right side of the first frame (1); The magnetic separation component (3) is used to adsorb fine magnetic substances. It is connected to the outlet end of the sedimentation component (2) through a pipe and is located in zone A (101). The processing component (4) is filtered by micron-level non-woven fabric at the top and receives filtered wastewater at the bottom. It is located in area B (102) and at the bottom of the magnetic separation component (3) to receive the wastewater discharged by the magnetic separation component (3). The filter tank (5) has two sets, located in zone C (103), and is connected to the treatment assembly (4) via a multi-stage centrifugal pump; The suction component (6) is floating inside the processing component (4); The oil skimming component (7) receives the oil sludge sucked out by the suction component (6) and filters it. The wastewater after filtration is discharged back into the treatment component (4), which is located in area A (101). An oil-containing detector (8) is located in the middle of the suction assembly (6); The processing component (4) includes a central processing water tank (401), an immersion heater (402), a filter unit (403), and a waste collection frame (404); the central processing water tank (401) is located directly below the drain pipe (304) and is used to receive wastewater; the immersion heater (402) is located in the bottom area of ​​the central processing water tank (401) and is used to heat the wastewater; the filter unit (403) is slidably located on the top of the central processing water tank (401); the waste collection frame (404) is located on one side of the central processing water tank (401) and is used to receive the waste residue filtered by the filter unit (403); The central treatment water tank (401) is equipped with a second water-turning plate (405) with an opening on its lower side. The second water-turning plate (405) divides the central treatment water tank (401) into chamber A and chamber B, with chamber B being larger than chamber A. Chamber A is connected to the suction end of a multi-stage centrifugal pump via a pipe. The immersion heater (402) is located in the chamber B area. The bottom of the central treatment water tank (401) is inclined from one end of the second water-turning plate (405) to the other end, causing the inner bottom to be sloped. The filter unit (403) includes a second frame (4031), a paper tape machine (4032), rollers (4033), and a baffle plate. (4034); the inner top wall of the second frame (4031) is gridded; the paper tape machine (4032) is installed on the second frame (4031), one end of which is located on the left side of the second frame (4031) for outputting clean filter paper; the other end is located on the right side of the second frame (4031) and above the waste collection box (404) for winding and recycling waste filter paper; at least four rollers (4033) are provided, symmetrically arranged on both sides of the second frame (4031), and the upper surface of the central treatment water tank (401) is provided with a matching slide, and the rollers (4033) can move repeatedly in a straight line on the slide; the baffle plate (4032) is installed on the second frame (4031) for outputting clean filter paper; the other end of which is located on the right side of the second frame (4031) and above the waste collection box (404) for winding and recycling waste filter paper; at least four rollers (4033) are provided, symmetrically arranged on both sides of the second frame (4031), and the upper surface of the central treatment water tank (401) is provided with a matching slide, and the rollers (4033) can move repeatedly in a straight line on the slide; the baffle plate (4032) is installed on the second frame (4031) for outputting clean filter paper; the paper tape machine ... 34) Located on one side of the second frame (4031), a gap is reserved in the middle of the connection between the filter paper and the second frame (4031) for the filter paper to pass through; the filter paper is introduced from the bottom of the baffle plate (4034) and led out from the top of the baffle plate (4034); the oil skimming assembly (7) includes a support frame (701), a drain shaft (702), an oil filtering unit (703), and a slag separating unit (704); the support frame (701) is located in area A (101), and a partition plate is provided in its inner cavity, which divides the support frame (701) into a first cavity and a second cavity; the drain shaft (702) is located at the top of the first cavity; the oil filtering unit (703) has at least There are two sets, symmetrically arranged inside the first cavity; the slag separation unit (704) is located at one end of the first cavity away from the drainage shaft (702); the slag separation unit (704) includes a partition frame (7041) and a guide frame (7042); the partition frame (7041) is located at the top of one side of the first cavity, and is arranged in a U-shape. It has a slot in the middle of the side facing the oil filter unit (703), and is arranged vertically on the other side; the guide frame (7042) is located at the top of one side of the first cavity, and is spaced apart from the partition frame (7041). The guide frame (7042) has an opening of the same size as the slot on the side facing the partition frame (7041), and is arranged with a downward slope on the other side.

2. The high-precision wastewater filtration system according to claim 1, characterized in that, The sedimentation assembly (2) includes a sedimentation tank (201), a first water-bumping plate (202), a water inlet unit (203), a water outlet unit (204), and a discharge unit (205), which are fixedly installed on the first frame (1) by support legs; There are multiple first water-bumping plates (202) with different heights, which are arranged in parallel inside the sedimentation tank (201); The water inlet unit (203) is located on one side of the sedimentation tank (201), and wastewater is introduced into the sedimentation tank (201) through the water inlet unit (203). The water outlet unit (204) is located on the sedimentation tank (201) on the symmetrical side of the water inlet unit (203); The discharge unit (205) is located at the bottom of the sedimentation tank (201).

3. The high-precision wastewater filtration system according to claim 1, characterized in that, The magnetic separation component (3) includes a magnetic separator (301), a water tank (302), a float level switch (303), and a drain pipe (304). The water tank (302) is fixedly installed on the first frame (1) by the support legs. The magnetic separator (301) is connected to the water tank (302) through the pipeline to obtain magnetic liquid separation. The float level switch (303) is installed in the water tank (302) and moves up and down with the liquid level. The float level switch (303) moves as the liquid level rises and triggers the drainage control, so that the drain pipe (304) at the bottom of the water tank (302) is automatically opened to complete the drainage operation. After the liquid level drops, the float resets and closes the drainage channel.

4. The high-precision wastewater filtration system according to claim 1, characterized in that, The filter tank (5) transports the deeply filtered water to external water-using equipment through pipelines to realize the recycling of wastewater; the flow path is switched between the two filter tanks (5) through a pneumatic three-way ball valve.

5. The high-precision wastewater filtration system according to claim 1, characterized in that, The suction assembly (6) includes a suspended suction head (601) and a delivery structure (602). The suspended suction head (601) is floating inside the central treatment water tank (401); One end of the conveying structure (602) is connected to the suspended suction head (601), and the other end is connected to the skimming component (7) via a pneumatic pump.

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