Multi-stage treatment equipment for water treatment

Abstract

The multi-stage treatment equipment comprises a communicating guide pipe, a first mounting cylinder, a second mounting cylinder, a copper fine metal filter screen, a quartz sand filling layer, an activated carbon filling layer and an ultrafiltration membrane filter element cylinder, the outer side of the communicating guide pipe is fixedly sleeved with a plurality of outer fixing rings, and supporting frames are installed at the bottoms of the two sides of the outer fixing rings; the bottom of the communicating guide pipe communicates with a plurality of mounting pipes; according to the scheme, a plurality of mounting pipes are arranged according to different specifications and use scenes, adaptation can be carried out under treatment of different scenes, according to actual needs, the purposes of adjusting the multi-stage treatment flow and adjusting part of the technology are achieved, the requirement for adjusting multi-stage water treatment under the scenes as many as possible within a certain range can be met, and the water treatment efficiency is improved. Different levels of treatment structures can be replaced, so that the water treatment requirements in different scenes within a certain range can be met, and a certain use effect is improved.

Description

[0001] This application is a divisional application of application filed on June 16, 2025, with application number 202510798308.3 and invention title "A Multi-stage Treatment Device for Water Treatment". Technical Field

[0002] This invention relates to the field of multi-stage water treatment equipment technology, specifically to a multi-stage treatment device for water treatment. Background Technology

[0003] Water treatment methods include physical, chemical, and biological treatment. Physical methods involve using filter media with different pore sizes to remove impurities from the water through adsorption or barrier methods. Activated carbon is a key adsorption method, while barrier methods pass water through the filter media, preventing larger impurities from passing through and thus obtaining cleaner water. Physical methods also include sedimentation, which allows lighter impurities to float to the surface and heavier impurities to settle. Chemical methods use various chemicals to transform impurities in the water into substances less harmful to humans or to concentrate the impurities. The oldest chemical treatment method is arguably adding alum to water; after the impurities aggregate and increase in size, they can be removed by filtration.

[0004] Multi-stage water treatment devices are equipment that purifies water step by step through multiple treatment stages. They are widely used in industrial wastewater treatment, drinking water purification, and sewage treatment and reuse. Their core principle is to combine different treatment processes (such as physical, chemical, and biological methods) according to water quality targets to achieve graded removal of pollutants. While multi-stage water treatment devices can effectively improve water quality in practical applications, they are affected by factors such as process complexity, operating conditions, and water quality fluctuations. For example, in industrial wastewater treatment, food processing plant wastewater exhibits significant variations in volume and quality due to the wide range of raw materials and products used in the food industry. Some projects simply copy mature processes without fully considering the characteristics of the raw water quality. They cannot adjust the structure and components of the water treatment system as needed, making it unsuitable for different scenarios and treatment conditions. This results in inconveniences in disassembly, maintenance, cleaning, and changes to the pre-filtration combination, leading to high operating costs. Therefore, a multi-stage water treatment device is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-stage water treatment device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage treatment device for water treatment, comprising a connecting conduit, a first installation cylinder, a second installation cylinder, a fine copper metal filter screen, a quartz sand filling layer, an activated carbon filling layer, and an ultrafiltration membrane filter cartridge. Several external fixing rings are fixedly sleeved on the outer side of the connecting conduit. Support frames are installed at the bottom of both sides of the external fixing rings. Several installation pipes are connected to the bottom of the connecting conduit. Limiting support rings are fixedly sleeved on the outer side of the installation pipes. A thread is provided on the outer side of the bottom end of the installation pipe. A positioning nut is threaded to the outer side of the installation pipe via the thread. A sealing soft cone ring is fixedly installed at the bottom end of the installation pipe via sealant. A spiral plate is fixedly installed inside the connecting conduit at the end away from the connector. One end of the connecting conduit is connected to the connector via a flange. The other end of the connecting conduit is connected to the connector via a flange. Several backwash pipes are connected to the top of the connecting conduit. A ventilation mechanism is provided inside one end of the connecting conduit.

[0007] The internal structure of the connecting conduit is provided with several flow guiding mechanisms, including a second flow guiding cone ring, a first U-shaped connecting pipe, an L-shaped connecting pipe, and a second U-shaped connecting pipe. An inner fixing ring is fixedly installed on one side of the second flow guiding cone ring. Several flow guiding holes are opened at the bottom of one end of the L-shaped connecting pipe and the second U-shaped connecting pipe. An oblique flow guiding spiral plate is fixedly sleeved on the outer side of one end of the first U-shaped connecting pipe. A threaded fourth thread is opened inside the bottom end of the first U-shaped connecting pipe. An anti-blocking mechanism is movably installed inside the bottom end of the first U-shaped connecting pipe.

[0008] Preferably, the support frame includes two threaded columns, and a connecting seat is movably inserted into the outer side of each of the two threaded columns. The connecting seats are symmetrically fixedly installed on the outer side of the outer fixing ring. Two fixing nuts are threadedly connected to the outer side of the top of each of the two threaded columns. The two fixing nuts are located at the top and bottom of the connecting seat, respectively. A bottom bracket is fixedly installed at the bottom end of each of the two threaded columns. Rubber shock-absorbing seats are fixedly installed at the bottom of both ends of the bottom bracket. The outer fixing ring is linearly and evenly distributed on the outer side of the connecting conduit.

[0009] Preferably, the mounting tubes are linearly and evenly distributed at the bottom of the connecting conduit, and the mounting tubes and the outer fixing rings are linearly and evenly distributed on the outside of the connecting conduit.

[0010] Preferably, the dimensions of connector one are compatible with those of connector two. Connector two is connected to an installation head at the end away from the connecting conduit. Valve two is movably installed on the inner side of the installation head. A bellows is connected to the end of the installation head away from connector two via a flange. A flange is installed on the outer side of the bellows at the end away from valve two.

[0011] Preferably, the backwash pipes are linearly and evenly distributed at the top of the connecting conduit, a valve is movably installed inside the backwash pipe, a connector is provided at the top of the backwash pipe, and the position of the backwash pipe corresponds to the position of the installation pipe.

[0012] Preferably, the second flow guide cone ring and the inner fixing ring are both fixedly sleeved on the inner wall of the connecting conduit. The position of the second flow guide cone ring corresponds to the position of the installation pipe. The first U-shaped connecting pipe, the first L-shaped connecting pipe, and the second U-shaped connecting pipe are all fixedly sleeved inside the second flow guide cone ring and the inner fixing ring. The first U-shaped connecting pipe, the first L-shaped connecting pipe, and the second U-shaped connecting pipe are all fixed inside the connecting conduit by the second flow guide cone ring and the inner fixing ring. The first U-shaped connecting pipe, the first L-shaped connecting pipe, and the second U-shaped connecting pipe are all concentric circles with the installation pipe. The first U-shaped connecting pipe, the first L-shaped connecting pipe, and the second U-shaped connecting pipe are linearly distributed inside the connecting conduit.

[0013] Preferably, the ventilation mechanism includes a venting pipe, a connector three is installed at the top of the venting pipe, a corrosion-resistant valve five is movably installed on the inner side of the connector three, the venting pipe is fixedly inserted through the connecting conduit and extends into the interior of the installation pipe, the venting pipe is located inside the connecting conduit at the end away from the connector one, the bottom end of the venting pipe is connected to a ring pipe, the top of the ring pipe is connected to several branch pipes, the branch pipes are evenly distributed circumferentially on the top of the ring pipe, the top of the branch pipes are connected to a flow guide plug, the outer wall of the flow guide plug is provided with several flow equalization holes, the flow equalization holes are evenly distributed circumferentially inside the flow guide plug, several support rods are fixedly installed on the outer side of the ring pipe, the support rods are evenly distributed circumferentially on the outer side of the ring pipe, the end of the support rod away from the ring pipe is fixedly installed on the inner wall of the installation pipe, the material of the flow guide plug is polytetrafluoroethylene, and the material of the venting pipe and the connector three is stainless steel.

[0014] Preferably, the anti-clogging mechanism includes a cross-shaped mounting bracket. The outer side of the cross-shaped mounting bracket is provided with a thread that matches the threaded four-phase, and the cross-shaped mounting bracket is installed inside the U-shaped connecting pipe through the threaded four-phase. A spring is fixedly installed at the bottom of the cross-shaped mounting bracket, and a hollow positioning post is fixedly installed at the bottom of the spring. A conical filter screen is fixedly installed at the bottom of the hollow positioning post, and a smooth limiting ring is fixedly sleeved on the outer side of the conical filter screen. The specifications and dimensions of the hollow positioning post and the smooth limiting ring are adapted to the specifications and dimensions of the U-shaped connecting pipe. The bottom of the conical filter screen is conical, and the outer edge of the inclined guide spiral plate is distributed inclined downward on the outer side of the U-shaped connecting pipe.

[0015] Preferably, a flow guide cone ring is fixedly installed at the bottom of the inner cavity of the first mounting cylinder, a discharge accumulation pipe is connected to the bottom of the first mounting cylinder, a valve is movably installed on the inner side of the discharge accumulation pipe, a thread is provided on the inner side of the top end of the first mounting cylinder, and the specifications and dimensions of the thread and the first mounting cylinder are adapted to the specifications and dimensions of the mounting pipe and the thread, and a thread is provided on the inner side of the top end of the second mounting cylinder, and the specifications and dimensions of the second mounting cylinder and the thread are adapted to the specifications and dimensions of the mounting pipe and the thread.

[0016] Preferably, four support pillars are fixedly installed at the bottom of the fine copper metal filter screen. The specifications and dimensions of the fine copper metal filter screen are adapted to the specifications and dimensions of the mounting cylinder one, mounting cylinder two, and U-shaped connecting pipe one. The fine copper metal filter screen is linearly stacked and evenly distributed inside the mounting cylinder two. A stainless steel mesh bag one is movably installed on the outside of the quartz sand filling layer. The specifications and dimensions of the stainless steel mesh bag one are adapted to the specifications and dimensions of the mounting cylinder one, mounting cylinder two, and U-shaped connecting pipe two. A stainless steel mesh bag two is movably sleeved on the outside of the activated carbon filling layer. The specifications and dimensions of the stainless steel mesh bag two are adapted to the specifications and dimensions of the mounting cylinder one, mounting cylinder two, and U-shaped connecting pipe two. A stainless steel support mesh base is movably installed at the bottom of the ultrafiltration membrane filter cartridge. Four support pillars are fixedly installed at the bottom of the stainless steel support mesh base. The ultrafiltration membrane filter cartridge is movably sleeved on the outside of the U-shaped connecting pipe two. The specifications and dimensions of the ultrafiltration membrane filter cartridge and the stainless steel support mesh base are adapted to the specifications and dimensions of the mounting cylinder two.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In use, the user connects connector one and connector two to the water pump and the downstream treatment equipment respectively. When water enters through connector one, it is first guided into the first installation pipe through the connecting conduit. Then, under the spiral guidance and tilting action of the inclined guide spiral plate, larger particulate matter in the water flow is gradually separated. Large particles in the water flow are blocked by the anti-blocking mechanism and fall into the interior of the first installation cylinder, while smaller impurities are filtered through the fine copper metal filter, resulting in multi-stage separation of impurities. Furthermore, the copper ion release process can inhibit microorganisms in the water flow to a certain extent. Water flows through a quartz sand-filled layer to filter fine particles, then through an activated carbon-filled layer to filter and adsorb impurities, and finally through an ultrafiltration membrane cartridge before being discharged through an installation pipe and connecting conduit. At this point, the aeration mechanism connects to a low-concentration chlorine gas supply device. As the water flows, chlorine gas enters the water flow and is evenly mixed with the water flow through the flow of the water and the spiral guidance of the spiral plate, thus entering the next treatment process. This scheme can effectively treat water in multiple stages and reduce the amount of impurities in the water. It can effectively treat and can be arranged into multi-stage treatment processes and schemes according to actual needs, increasing flexibility. This solution allows for the installation of multiple installation pipes, ranging from four to more, depending on specifications and usage scenarios. This adaptability allows for different treatment scenarios. Based on actual needs and the installation methods of the copper fine metal filter, quartz sand filling layer, activated carbon filling layer, and ultrafiltration membrane cartridge, installation pipes are combined with installation cylinder one and installation cylinder two and installed at the bottom of the corresponding installation pipe. This enables adjustment of multi-stage treatment processes and partial process adjustments, accommodating the needs of adjusting multi-stage water treatment in as many scenarios as possible within a certain range. It also allows for the replacement of different treatment stages or the addition of multiple treatment stages, adapting to different water treatment requirements within a certain range and enhancing the overall effectiveness. When gas needs to be introduced into the water, this solution connects the aeration device to connector three and opens the corrosion-resistant valve five, allowing the airflow to enter the ring pipe through the aeration pipe. The airflow then flows through the circumferential guides of the ring pipe and branch pipes into the guide plug, and finally exits evenly through the equalization orifice, thus uniformly discharging into the water flow. This promotes mixing of the airflow and water flow. The aeration device can be replaced, or liquid flow can be introduced through this pipeline, allowing for the addition of different fluids as needed. This assists in multi-stage water treatment and enhances the ability to integrate fluid introduction with multi-stage water treatment operations. Attached Figure Description

[0018] Figure 1 This is a front-view stereoscopic structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the three-dimensional appearance structure of the present invention from a rear-view or upward-view perspective.

[0020] Figure 3 This is a front sectional view of the three-dimensional structure of the present invention.

[0021] Figure 4 This is a front sectional view of the internal structure of the present invention.

[0022] Figure 5 This is a three-dimensional cross-sectional view of the mounting cylinder one and mounting cylinder two of the present invention.

[0023] Figure 6 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0024] Figure 7 For the present invention Figure 4 Enlarged structural diagram at point B.

[0025] Figure 8 For the present invention Figure 4 Enlarged structural diagram at point C.

[0026] Figure 9 For the present invention Figure 4 Enlarged structural diagram at point D.

[0027] Figure 10 For the present invention Figure 4 Enlarged structural diagram at point E in the middle.

[0028] In the diagram: 1. Connecting conduit; 101. External fixing ring; 102. Mounting pipe; 103. Limiting support ring; 104. Positioning nut; 105. Spiral plate one; 106. Thread one; 107. Sealing soft cone ring; 2. Support frame; 201. Threaded column; 202. Base bracket; 203. Rubber shock absorber seat; 204. Connecting seat; 205. Fixing nut; 3. Mounting cylinder one; 301. Flow guide cone ring one; 302. Valve one; 303. Thread two; 304. Discharge accumulation pipe; 4. Mounting cylinder two; 401. Thread three; 5. Connector one; 6. Connector two; 601. Mounting head; 602. Valve two; 603. Bellows; 7. Backwash pipe; 701. Valve four; 8. Ventilation mechanism; 801. Air guide pipe; 802. Connector three; 803. Corrosion-resistant valve five; 804. Ring pipe; 8 05. Branch pipe; 806. Flow guide plug; 807. Flow equalization hole; 808. Support rod; 9. Anti-clogging mechanism; 901. Thread four; 902. Cross mounting bracket; 903. Spring; 904. Hollowed-out positioning post; 905. Smooth limiting ring; 906. Conical filter screen; 10. Flow guide mechanism; 1001. Flow guide cone ring two; 1002. U-shaped connecting pipe one; 1003. L-shaped connecting pipe; 10 04. Inclined guide spiral plate; 1005. Guide hole; 1006. Inner fixing ring; 1007. U-shaped connecting pipe II; 11. Copper fine metal filter screen; 1101. Support column II; 12. Quartz sand filling layer; 1201. Stainless steel mesh bag I; 13. Activated carbon filling layer; 1301. Stainless steel mesh bag II; 14. Ultrafiltration membrane filter cartridge; 1401. Stainless steel support mesh base; 1402. Support column I. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-10This invention provides a technical solution: a multi-stage water treatment device, comprising a connecting conduit 1, a first installation cylinder 3, a second installation cylinder 4, a fine copper metal filter screen 11, a quartz sand filling layer 12, an activated carbon filling layer 13, and an ultrafiltration membrane filter cartridge 14. Several outer fixing rings 101 are fixedly sleeved on the outer side of the connecting conduit 1. Support frames 2 are installed at the bottom of both sides of the outer fixing rings 101. Several installation pipes 102 are connected to the bottom of the connecting conduit 1. Limiting support rings 103 are fixedly sleeved on the outer side of the installation pipes 102. The outer side of the bottom end of the installation pipes 102... The mounting tube 102 is threaded with thread 106, and a positioning nut 104 is threadedly connected to the outside of the mounting tube 102 via thread 106. A sealing soft cone ring 107 is fixedly installed at the bottom end of the mounting tube 1 with sealant. A spiral plate 105 is fixedly installed inside the end of the connecting conduit 1 away from the connector 5. One end of the connecting conduit 1 is connected to the connector 5 via a flange, and the other end of the connecting conduit 1 is connected to the connector 6 via a flange. Several backwash pipes 7 are connected to the top of the connecting conduit 1. A ventilation mechanism 8 is provided inside one end of the connecting conduit 1.

[0031] The internal part of the connecting conduit 1 is provided with several flow guiding mechanisms 10. The flow guiding mechanism 10 includes a second flow guiding cone ring 1001, a first U-shaped connecting pipe 1002, an L-shaped connecting pipe 1003, and a second U-shaped connecting pipe 1007. An inner fixing ring 1006 is fixedly installed on one side of the second flow guiding cone ring 1001. Several flow guiding holes 1005 are opened at the bottom of one end of the L-shaped connecting pipe 1003 and the second U-shaped connecting pipe 1007. An oblique flow guiding spiral plate 1004 is fixedly sleeved on the outer side of one end of the first U-shaped connecting pipe 1002. A thread 901 is opened inside the bottom end of the first U-shaped connecting pipe 1002. An anti-blocking mechanism 9 is movably installed inside the bottom end of the first U-shaped connecting pipe 1002.

[0032] The working principle of the above technical solution is as follows: During use, the user connects connector 5 and connector 6 to the water pump and downstream treatment equipment, respectively. When water enters through connector 5, it is first guided into the first installation pipe 102 through the connecting conduit 1. Then, under the spiral guidance of the inclined guide spiral plate 1004 and the inclined action, larger particles in the water flow are gradually separated, settle, and guided to the bottom pipeline through installation cylinder 3. Then, the water flow is guided upward through the U-shaped connecting pipe 1002, while large particles in the water flow are blocked by the anti-blocking mechanism 9 and fall into the interior of installation cylinder 3. Smaller impurities and water flow are guided into the next installation pipe 102 and the inner side of installation cylinder 4 through the U-shaped connecting pipe 1002. Then, through the filtration of the fine copper metal filter 11, impurities are separated in multiple stages, and the copper ion release process can inhibit microorganisms in the water flow to a certain extent. Then, the water flow is guided from bottom to top to the next installation pipe 102 and... The water flows through the interior of the connecting conduit 1, and then through the quartz sand filling layer 12 to filter fine particles. Next, the water flows through the spiral plate 105 to the interior of the L-shaped connecting pipe 1003, and then through the L-shaped connecting pipe 1003 to the interior of the next installation pipe 102. There, it passes through the activated carbon filling layer 13 to filter and adsorb impurities in the water. Then, the water flows through the spiral plate 105 and the U-shaped connecting pipe 1007 to the interior of the final ultrafiltration membrane filter cartridge 14. After filtration, it is discharged through the installation pipe 102 and the connecting conduit 1. At this time, the aeration mechanism 8 connects to the low-concentration chlorine gas supply equipment. With the flow of water, chlorine enters the water flow and, through the flow of water and the spiral guidance of the spiral plate 105, mixes evenly with the water flow before entering the next treatment process. This scheme can effectively treat water in multiple stages and reduce the amount of impurities in the water. It can effectively treat and can be arranged into multi-stage treatment processes and schemes according to actual needs, increasing flexibility.

[0033] In another implementation scheme, such as Figures 1-6 As shown, the support frame 2 includes two threaded posts 201. A connecting seat 204 is movably inserted into the outer side of each of the two threaded posts 201. The connecting seats 204 are symmetrically fixedly installed on the outer side of the outer fixing ring 101. Two fixing nuts 205 are threadedly connected to the outer side of the top of each of the two threaded posts 201. The two fixing nuts 205 are located at the top and bottom of the connecting seat 204, respectively. A bottom bracket 202 is fixedly installed at the bottom of the two threaded posts 201. Rubber shock-absorbing seats 203 are fixedly installed at the bottom of both ends of the bottom bracket 202. The outer fixing ring 101 is linearly and evenly distributed on the outer side of the connecting conduit 1.

[0034] The support frame 2 provides support for the connecting conduit 1 and can adjust its height. When the connecting conduit 1 needs to adapt to different heights, rotating the two fixing nuts 205 causes the relative position of the threaded post 201 and the connecting seat 204 to change. Tightening the fixing nuts 205 fixes the connecting seat 204 to the outside of the relative position of the threaded post 201, thus achieving a certain degree of height adjustment and support. Furthermore, the vibration damping support of the rubber shock absorber 203, after being installed through the insertion hole of the smooth bolt, causes the rubber shock absorber 203 and the smooth part of the long bolt to have a limiting and displacement effect when the connecting conduit 1 is struck. This allows the connecting conduit 1 to transmit some displacement after being pressed and shaken, and indirectly reduces the possibility of blockage in the multi-stage separation components inside the connecting conduit 1. The rubber shock absorber 203 can help reduce vibration transmission during installation and normal use, and can be used for multi-stage water treatment in different scenarios under certain conditions, increasing its adaptability.

[0035] In another implementation scheme, such as Figures 1-4 As shown, the mounting tube 102 is linearly and evenly distributed at the bottom of the connecting conduit 1, and the mounting tube 102 and the outer fixing ring 101 are linearly and evenly distributed on the outside of the connecting conduit 1.

[0036] Multiple installation pipes 102 can be installed depending on specifications and usage scenarios, ranging from four to more, to adapt to different treatment scenarios, such as waterworks, rural drinking water projects, wastewater from food processing industries, some domestic sewage, and landscape water. Different filtration structures can be set according to actual needs, offering high flexibility. The process combination can be adjusted based on the raw water quality and target water quality to adapt to different scenario requirements, such as the pretreatment stage: material selection for removing large particulate impurities and suspended solids. Metal materials are used, including: 1) Stainless steel SS304 / 316 perforated mesh or woven mesh filter elements with pore sizes of 10~100μm, which are corrosion-resistant, high-strength, and reusable, suitable for high-turbidity water; 2) Copper alloy, golden brass sintered filter elements with pore sizes of 5~50μm, which have strong antibacterial properties, copper ions inhibit microbial growth, and are high-temperature resistant, suitable for pretreatment of water sources containing microorganisms. Then, high-molecular materials are used. One type is polypropylene (PP) melt-blown filter cartridges with pore sizes of 1-100μm and wound filter cartridges with pore sizes of 5-100μm. These are low-cost, chemically compatible, and can filter oils and organic matter. They are disposable and require no cleaning. Another type is nylon (PA) woven mesh filter cartridges with pore sizes of 20-200μm and filter bags. These are wear-resistant and impact-resistant, suitable for water with high suspended solids concentrations, such as mine wastewater. The second type is porous media materials. One type is quartz sand / manganese sand, with granular filter media particle sizes of 0.5-2mm, filled in filter beds or tanks. Quartz sand has a strong ability to adsorb suspended solids, while manganese sand can catalytically oxidize and remove iron and manganese ions. The second type is anthracite, with granular filter media particle sizes of 1-3mm. It is often combined with quartz sand to form a double-layer filter media, with low density, high porosity, and strong interception capacity, suitable for rapid filtration of high-turbidity water. The membrane materials are categorized into two types: microfiltration membranes (MF), made of polypropylene (PP), polyvinylidene fluoride (PVDF), ceramics, etc., with pore sizes ranging from 0.1 to 10 μm. These membranes come in various forms, including hollow fiber membranes and flat sheet membranes. PVDF membranes are chemically resistant and suitable for industrial wastewater; ceramic membranes are heat-resistant (≤300℃) and fouling-resistant, making them suitable for high-turbidity or oily wastewater. Ultrafiltration membranes (UF), made of polysulfone (PS), polyethersulfone (PES), PVDF, etc., have pore sizes ranging from 0.001 to 0.1 μm and a molecular weight cutoff of 10 to 100 kDa. They can remove bacteria, colloids, and large organic molecules and are commonly used for advanced drinking water treatment.The final stage of treatment uses activated carbon, such as coconut shell, fruit shell, or coal-based activated carbon, with a specific surface area of ​​500~1500m² / g. Granular activated carbon (GAC) and powdered activated carbon (PAC) are also used to adsorb organic matter and odors. PAC is often used for emergency treatment. Other filter materials are selected according to actual needs and the installation method of the copper fine metal filter screen 11, quartz sand filling layer 12, activated carbon filling layer 13, and ultrafiltration membrane filter cartridge 14. They are installed at the bottom of the corresponding installation pipe 102 in combination with installation cartridge 11 and installation cartridge 2 4. This allows for the adjustment of multi-stage treatment processes and some process adjustments. It can adapt to the needs of adjusting multi-stage water treatment in as many scenarios as possible within a certain range, and can replace different stages of treatment structures or add multiple treatments of the same stage. It can adapt to the water treatment needs of different scenarios within a certain range and improve the effectiveness of use.

[0037] In another implementation scheme, such as Figures 1-4 As shown, the dimensions of connector 5 are compatible with those of connector 6. The end of connector 6 away from the connecting conduit 1 is connected to mounting head 601. Valve 602 is movably mounted on the inner side of mounting head 601. The end of mounting head 601 away from connector 6 is connected to bellows 603 via a flange. A flange is mounted on the outer side of the end of bellows 603 away from valve 602.

[0038] The installation of connector 5 and connector 6 facilitates the use of corresponding booster pumps and suction pumps. This allows the structure to be configured for different stages of treatment, such as positive or negative pressure, according to actual needs. Furthermore, it allows for the interchange of connector 5 and connector 6, as well as the replacement of the same connector 6. This enables flexible adjustment to different water treatment requirements, effectively guiding flow and cooperating with other water treatment operations, thus increasing the flexibility of use.

[0039] In another implementation scheme, such as Figures 1-4 As shown, the backwash pipes 7 are linearly and evenly distributed at the top of the connecting conduit 1. A valve 701 is movably installed inside the backwash pipes 7. A connector is provided at the top of the backwash pipes 7. The position of the backwash pipes 7 corresponds to the position of the installation pipe 102.

[0040] The function of the backwash pipe 7 is to flush the multi-stage filter structure connected to the connecting conduit 1 and the installation pipe 102 by opening valve 701 after a certain operating time through the connection flushing equipment, thereby reducing the maintenance cycle. When deep maintenance is required, if both ends of the connecting conduit 1 are connected to connector 6, valve 602 can be closed to remove the installation cylinder 3 and installation cylinder 4 and flush them through the backwash pipe 7 for cleaning. This achieves better maintenance and cleaning results, increases the convenience of overall structure maintenance, promotes structural stability, and indirectly increases the service life of the device.

[0041] In another implementation scheme, such as Figures 1-10 As shown, the second guide cone ring 1001 and the inner fixing ring 1006 are both fixedly sleeved on the inner wall of the connecting conduit 1. The position of the second guide cone ring 1001 corresponds to the position of the installation pipe 102. The first U-shaped connecting pipe 1002, the first L-shaped connecting pipe 1003, and the second U-shaped connecting pipe 1007 are all fixedly sleeved inside the second guide cone ring 1001 and the inner fixing ring 1006. The first U-shaped connecting pipe 1002, the first L-shaped connecting pipe 1003, and the second U-shaped connecting pipe 1007 are all fixed inside the connecting conduit 1 by the second guide cone ring 1001 and the inner fixing ring 1006. The first U-shaped connecting pipe 1002, the first L-shaped connecting pipe 1003, and the second U-shaped connecting pipe 1007 are all concentric circles with the installation pipe 102. The first U-shaped connecting pipe 1002, the first L-shaped connecting pipe 1003, and the second U-shaped connecting pipe 1007 are linearly distributed inside the connecting conduit 1.

[0042] The second guide cone ring 1001 inside the connecting pipe 1 serves to guide the water flow. If some impurities detach from the water flow due to closure and inertia, they can be guided by the second guide cone ring 1001 to the first U-shaped connecting pipe 1002 and then fall back into the multi-stage treatment structure, thus achieving relatively stable flow guidance and reducing impurity accumulation. The inner fixing ring 1006 supports the first U-shaped connecting pipe 1002, the L-shaped connecting pipe 1003, and the second U-shaped connecting pipe 1007. The first U-shaped connecting pipe 1002, the L-shaped connecting pipe 1003, and the second U-shaped connecting pipe 1007 serve different functions of diversion and guidance. The three structures represent different... With the same structure and function, in actual production, by replacing and adding multiple U-shaped connecting pipes 1002, L-shaped connecting pipes 1003 and U-shaped connecting pipes 1007, it is possible to add or reduce the required water treatment scenarios under customized conditions, so that the overall structure meets the actual needs and can be used and produced stably in various specifications. In other words, U-shaped connecting pipes 1002, L-shaped connecting pipes 1003 and U-shaped connecting pipes 1007 are the basic structure of this application, which can be customized and combined as needed, and used in conjunction with installation pipe 102, installation cylinder 13 and installation cylinder 24, which increases the relatively stable use effect and further increases the flexibility.

[0043] In another implementation scheme, such as Figures 1-9As shown, the ventilation mechanism 8 includes an air guide pipe 801. A connector 802 is installed at the top of the air guide pipe 801. A corrosion-resistant valve 803 is movably installed inside the connector 802. The air guide pipe 801 is fixedly inserted through the connecting conduit 1 and extends into the interior of the mounting pipe 102. The air guide pipe 801 is located inside the connecting conduit 1 at the end away from the connector 802. The bottom end of the air guide pipe 801 is connected to a ring pipe 804. The top of the ring pipe 804 is connected to several branch pipes 805, which are evenly distributed circumferentially on the top of the ring pipe 804. The top is connected to a flow guide plug 806. The outer wall of the flow guide plug 806 is provided with several flow equalization holes 807. The flow equalization holes 807 are evenly distributed in a circular pattern inside the flow guide plug 806. Several support rods 808 are fixedly installed on the outside of the ring tube 804. The support rods 808 are evenly distributed in a circular pattern on the outside of the ring tube 804. The end of the support rod 808 away from the ring tube 804 is fixedly installed on the inner wall of the installation tube 102. The flow guide plug 806 is made of polytetrafluoroethylene. The air guide tube 801 and the connector 802 are made of 316L stainless steel.

[0044] When gas needs to be introduced into the water, such as low-concentration chlorine gas which has a certain disinfection and sterilization effect, the aeration equipment is connected to connector 802 and the corrosion-resistant valve 803 is opened. This allows the airflow to enter the ring pipe 804 through the air guide pipe 801, and then enter the flow guide plug 806 through the circumferential guidance of the ring pipe 804 and the branch pipe 805. Finally, it is evenly discharged into the water flow through the equalization hole 807, thereby promoting the mixing of airflow and water flow. The aeration system can be replaced, or liquid flow can be introduced through this pipeline, allowing different fluids to be added as needed to assist in multi-stage water treatment. The aeration mechanism 8 is made of corrosion-resistant materials such as polytetrafluoroethylene, polypropylene, ceramic, 316L stainless steel, and 2205 duplex steel, which assists in the operation and increases the ability of fluid introduction to cooperate with multi-stage water treatment.

[0045] In another implementation scheme, such as Figures 1-8As shown, the anti-blocking mechanism 9 includes a cross mounting bracket 902. The outer side of the cross mounting bracket 902 is provided with a thread that matches the threaded fourth 901. The cross mounting bracket 902 is screwed into the U-shaped connecting pipe 1002 through the threaded fourth 901. A spring 903 is fixedly installed at the bottom of the cross mounting bracket 902. A hollow positioning post 904 is fixedly installed at the bottom end of the spring 903. A cone-shaped filter screen 906 is fixedly installed at the bottom of the hollow positioning post 904. A smooth limiting ring 905 is fixedly sleeved on the outer side of the cone-shaped filter screen 906. The specifications and dimensions of the hollow positioning post 904 and the smooth limiting ring 905 are adapted to the specifications and dimensions of the U-shaped connecting pipe 1002. The bottom of the cone-shaped filter screen 906 is cone-shaped. The outer edge of the inclined guide spiral plate 1004 is distributed in an inclined downward direction on the outer side of the U-shaped connecting pipe 1002.

[0046] When the water flow enters the inner side of the U-shaped connecting pipe 1002 through the water flow tube 102 and the installation cylinder 3, some impurities in the water flow are intercepted by the cone-shaped filter screen 906, which helps to intercept large-pore materials that meet the screening conditions. The cone-shaped flow of the cone-shaped filter screen 906 and gravity reduce clogging. In addition, the smooth limiting ring 905 causes the water flow to make a bend at the smooth limiting ring 905 and the cone-shaped filter screen 906. The inclined guide spiral plate 1004 guides the water flow downward, and there is a small gap between the outer edge of the inclined guide spiral plate 1004 and the inner wall of the installation cylinder 3. Thus, the combination of multiple structures promotes the separation of large particles of impurities from the water flow as much as possible, further reducing clogging. In addition, the spring 903, under the impact and shaking of the water flow, provides displacement support for the hollow positioning post 904 and the cone-shaped filter screen 906 at the bottom, thereby making the smooth limiting ring 905... 05 and the hollow positioning column 904 move and shake on the inner and outer walls of the U-shaped connecting pipe 1002, thereby reducing the clogging of the cone filter screen 906. When the turbidity is high, pre-filtration is required. The linear velocity of the water flow through the material is controlled at 0.1~0.5m / s to avoid high-speed impact causing impurity deposition. A honeycomb, stepped pore design is adopted, such as a large-pore-micro-pore graded structure, to reduce the clogging of micropores by large particles at the front end. Regular backwashing is performed, such as once a week, to remove adsorbed impurities by reverse flushing with water flow, thereby reducing clogging to a certain extent. Large particles of impurities filtered by the anti-clogging mechanism 9 are guided into the discharge accumulation pipe 304 through the installation cylinder 3 and the guide cone ring 301. By opening the valve 302, the large particles of impurities accumulated inside are discharged, thereby achieving dynamic separation, reducing the frequency of maintenance and cleaning, and increasing the effect of primary treatment and initial separation.

[0047] In another implementation scheme, such as Figures 1-5As shown, a flow guide cone ring 301 is fixedly installed at the bottom of the inner cavity of the mounting cylinder 3. The bottom of the mounting cylinder 3 is connected to a discharge accumulation pipe 304. A valve 302 is movably installed on the inner side of the discharge accumulation pipe 304. A thread 303 is provided on the inner side of the top of the mounting cylinder 3. The specifications and dimensions of the thread 303 and the mounting cylinder 3 are compatible with the specifications and dimensions of the mounting pipe 102 and the thread 106. A thread 401 is provided on the inner side of the top of the mounting cylinder 4. The specifications and dimensions of the mounting cylinder 4 and the thread 401 are compatible with the specifications and dimensions of the mounting pipe 102 and the thread 106.

[0048] Installation cylinder 1 (3) and installation cylinder 2 (4) are two specifications under the same structure, used to accommodate different levels of filter media. For example, the main structure of installation cylinder 1 (3) is outlet-type, while the main structure of installation cylinder 2 (4) is closed, thus accommodating different water treatments. Installation cylinder 1 (3) and installation cylinder 2 (4) can be expanded into other different configurations to assist different treatment processes. With the detachable installation pipe 102 and thread 106, different installation and usage effects are increased.

[0049] In another implementation scheme, such as Figures 1-4 As shown, four support pillars 1101 are fixedly installed at the bottom of the fine copper metal filter 11. The specifications and dimensions of the fine copper metal filter 11 are compatible with those of the mounting cylinder 3, mounting cylinder 4, and U-shaped connecting pipe 1002. The fine copper metal filter 11 is linearly stacked and evenly distributed inside the mounting cylinder 4. A stainless steel mesh bag 1201 is movably installed on the outside of the quartz sand filling layer 12. The specifications and dimensions of the stainless steel mesh bag 1201 are compatible with those of the mounting cylinder 3, mounting cylinder 4, and L-shaped connecting pipe 1003. The activated carbon filling layer 13 is... A stainless steel mesh bag 1301 is movably sleeved on the side. The specifications and dimensions of the stainless steel mesh bag 1301 are compatible with those of the mounting cylinder 3, the mounting cylinder 4, and the U-shaped connecting pipe 1007. A stainless steel support mesh base 1401 is movably installed at the bottom of the ultrafiltration membrane filter cartridge 14. Four pillars 1402 are fixedly installed at the bottom of the stainless steel support mesh base 1401. The ultrafiltration membrane filter cartridge 14 is movably sleeved on the outside of the U-shaped connecting pipe 1007. The specifications and dimensions of the ultrafiltration membrane filter cartridge 14 and the stainless steel support mesh base 1401 are compatible with those of the mounting cylinder 4.

[0050] The copper fine metal filter 11 serves as a primary coarse filter, intercepting large particles such as sediment and rust. The mesh size must be larger than that of quartz sand, such as 200 microns, to reduce the load on the subsequent quartz sand filter layer and extend the backwash cycle. Long-term contact with neutral / alkaline water may cause the copper filter to slowly release copper ions. The copper limit in drinking water is 1.0 mg / L. If the system is used for drinking water, the copper filter material should be food-grade, such as 99% pure copper or copper alloy. The copper ion concentration in the water should be regularly monitored, and the number of filter layers should be adjusted as needed to avoid exceeding the limit. Copper's antibacterial ability gradually weakens with use. With reduced release, the filter screen needs to be cleaned or replaced regularly, and checked every 3-6 months. If the water quality is poor, the cycle should be shortened. If the pore size of the copper filter screen is larger than the precision of the subsequent physical filter media, such as quartz sand with a particle size of 0.5-1.2mm, then the pore size of the copper filter screen can be selected as 100-200 microns to avoid clogging caused by "fine at the beginning and coarse at the end". The multi-stage treatment solution demonstrated in this application is as follows: removal of large particles → removal of fine particles and colloids → adsorption of organic matter / odors → finer filtration → sterilization and disinfection. The solution can be extended to meet different filter layer requirements according to needs, which can be adjusted to match different stages of water treatment and increase the effectiveness of use.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage water treatment device, comprising a connecting conduit (1), a first installation cylinder (3), a second installation cylinder (4), a fine copper metal filter screen (11), a quartz sand filling layer (12), an activated carbon filling layer (13), and an ultrafiltration membrane filter cartridge (14), characterized in that: The outer side of the connecting conduit (1) is fixedly sleeved with several outer fixing rings (101). Support frames (2) are installed at the bottom of both sides of the outer fixing rings (101). The bottom of the connecting conduit (1) is connected to several installation tubes (102). The outer side of the installation tube (102) is fixedly sleeved with a limit support ring (103). The outer side of the bottom end of the installation tube (102) is provided with a thread (106). The outer side of the installation tube (102) is threaded with a positioning nut (104) through the thread (106). A sealing soft cone ring (107) is fixedly installed at the bottom end of the pipe (102) with sealant. A spiral plate (105) is fixedly installed inside the end of the connecting pipe (1) away from the connector (5). One end of the connecting pipe (1) is connected to the connector (5) through a flange. The other end of the connecting pipe (1) is connected to the connector (6) through a flange. Several backwash pipes (7) are connected to the top of the connecting pipe (1). A ventilation mechanism (8) is provided inside one end of the connecting pipe (1). The internal conduit (1) is provided with several flow guiding mechanisms (10). The flow guiding mechanism (10) includes a second flow guiding cone ring (1001), a first U-shaped connecting pipe (1002), an L-shaped connecting pipe (1003), and a second U-shaped connecting pipe (1007). An inner fixing ring (1006) is fixedly installed on one side of the second flow guiding cone ring (1001). Several flow guiding holes (1005) are opened at the bottom of one end of the L-shaped connecting pipe (1003) and the second U-shaped connecting pipe (1007). An oblique flow guiding spiral plate (1004) is fixedly sleeved on the outer side of one end of the first U-shaped connecting pipe (1002). A thread four (901) is opened inside the bottom end of the first U-shaped connecting pipe (1002). An anti-blocking mechanism (9) is movably installed inside the bottom end of the first U-shaped connecting pipe (1002). The mounting tube (102) is linearly and evenly distributed at the bottom of the connecting conduit (1), and the mounting tube (102) and the outer fixing ring (101) are linearly and evenly distributed on the outside of the connecting conduit (1). The second guide cone ring (1001) and the inner fixing ring (1006) are both fixedly sleeved on the inner wall of the connecting conduit (1). The position of the second guide cone ring (1001) corresponds to the position of the installation pipe (102). The first U-shaped connecting pipe (1002), the L-shaped connecting pipe (1003), and the second U-shaped connecting pipe (1007) are all fixedly sleeved inside the second guide cone ring (1001) and the inner fixing ring (1006). Both U-shaped connecting pipe 1 (1003) and U-shaped connecting pipe 2 (1007) are fixed inside the connecting conduit (1) by the flow guide cone ring 2 (1001) and the inner fixing ring (1006), and U-shaped connecting pipe 1 (1002), L-shaped connecting pipe 1003 and U-shaped connecting pipe 2 (1007) are concentric with the installation pipe (102). The U-shaped connecting pipe 1 (1002), L-shaped connecting pipe 1003 and U-shaped connecting pipe 2 (1007) are linearly distributed inside the connecting conduit (1); The ventilation mechanism (8) includes an air guide pipe (801), with a connector three (802) installed at the top of the air guide pipe (801). A corrosion-resistant valve five (803) is movably installed on the inner side of the connector three (802). The air guide pipe (801) is fixedly inserted through the connecting conduit (1) and extends into the interior of the mounting pipe (102). The air guide pipe (801) is located inside the connecting conduit (1) at the end away from the connector one (5). The bottom end of the air guide pipe (801) is connected to a ring pipe (804). The top of the ring pipe (804) is connected to several branch pipes (805). The branch pipes (805) are evenly distributed circumferentially on the top of the ring pipe (804). The top of the 05) is connected to a flow guide plug (806). The outer wall of the flow guide plug (806) is provided with several flow equalization holes (807). The flow equalization holes (807) are evenly distributed in a circular pattern inside the flow guide plug (806). Several support rods (808) are fixedly installed on the outside of the ring tube (804). The support rods (808) are evenly distributed in a circular pattern on the outside of the ring tube (804). The end of the support rod (808) away from the ring tube (804) is fixedly installed on the inner wall of the installation tube (102). The material of the flow guide plug (806) is polytetrafluoroethylene. The material of the gas guide tube (801) and the connector (802) is 316L stainless steel. The support frame (2) includes two threaded columns (201), and a connecting seat (204) is movably inserted into the outer side of each of the two threaded columns (201). The connecting seats (204) are symmetrically fixedly installed on the outer side of the outer fixing ring (101). Two fixing nuts (205) are threadedly connected to the outer side of the top of each of the two threaded columns (201). The two fixing nuts (205) are located at the top and bottom of the connecting seat (204) respectively. A bottom bracket (202) is fixedly installed at the bottom end of each of the two threaded columns (201). Rubber shock absorber seats (203) are fixedly installed at the bottom of both ends of the bottom bracket (202). The outer fixing ring (101) is linearly and evenly distributed on the outer side of the connecting conduit (1). The dimensions of connector one (5) are compatible with those of connector two (6). Connector two (6) is connected to a mounting head (601) at the end away from the connecting conduit (1). Valve two (602) is movably installed on the inner side of mounting head (601). Bellows (603) is installed at the end of mounting head (601) away from connector two (6) via a flange. Flange is installed on the outer side of the bellows (603) away from valve two (602).

2. The multi-stage treatment equipment for water treatment according to claim 1, characterized in that: The backwash pipe (7) is linearly and evenly distributed on the top of the connecting conduit (1). A valve (701) is movably installed inside the backwash pipe (7). A connector is provided on the top of the backwash pipe (7). The position of the backwash pipe (7) corresponds to the position of the installation pipe (102).

3. A multi-stage treatment device for water treatment according to claim 1, characterized in that: The anti-blocking mechanism (9) includes a cross mounting bracket (902). The outer side of the cross mounting bracket (902) is provided with a thread that matches the threaded section (901). The cross mounting bracket (902) is screwed into the interior of the U-shaped connecting pipe (1002) via the threaded section (901). A spring (903) is fixedly mounted at the bottom of the cross mounting bracket (902). A hollow positioning post (904) is fixedly mounted at the bottom end of the spring (903). 4) A cone-shaped filter screen (906) is fixedly installed at the bottom. A smooth limiting ring (905) is fixedly sleeved on the outside of the cone-shaped filter screen (906). The specifications and dimensions of the hollow positioning post (904) and the smooth limiting ring (905) are adapted to the specifications and dimensions of the U-shaped connecting pipe (1002). The bottom of the cone-shaped filter screen (906) is cone-shaped. The outer edge of the inclined guide spiral plate (1004) is distributed on the outside of the U-shaped connecting pipe (1002) in an inclined downward direction.

4. A multi-stage treatment device for water treatment according to claim 1, characterized in that: A flow guide cone ring (301) is fixedly installed at the bottom of the inner cavity of the first mounting cylinder (3). The bottom of the first mounting cylinder (3) is connected to a discharge accumulation pipe (304). A valve (302) is movably installed on the inner side of the discharge accumulation pipe (304). A thread (303) is opened on the inner side of the top of the first mounting cylinder (3). The specifications and dimensions of the thread (303) and the first mounting cylinder (3) are compatible with the specifications and dimensions of the mounting pipe (102) and the thread (106). A thread (401) is opened on the inner side of the top of the second mounting cylinder (4). The specifications and dimensions of the second mounting cylinder (4) and the thread (401) are compatible with the specifications and dimensions of the mounting pipe (102) and the thread (106).

5. A multi-stage treatment device for water treatment according to claim 1, characterized in that: The bottom of the fine copper metal filter (11) is fixedly installed with four support pillars (1101). The size of the fine copper metal filter (11) is compatible with the size of the mounting cylinder (3), the mounting cylinder (4), and the U-shaped connecting pipe (1002). The fine copper metal filter (11) is linearly stacked and evenly distributed inside the mounting cylinder (4). A stainless steel mesh bag (1201) is movably installed on the outside of the quartz sand filling layer (12). The size of the stainless steel mesh bag (1201) is compatible with the size of the mounting cylinder (3), the mounting cylinder (4), and the L-shaped connecting pipe (1003). The activated carbon filling layer (13) is... A stainless steel mesh bag (1301) is movably sleeved on the side. The size of the stainless steel mesh bag (1301) is compatible with the size of the mounting cylinder (3), the mounting cylinder (4), and the U-shaped connecting pipe (1007). A stainless steel support mesh seat (1401) is movably installed at the bottom of the ultrafiltration membrane filter cartridge (14). Four pillars (1402) are fixedly installed at the bottom of the stainless steel support mesh seat (1401). The ultrafiltration membrane filter cartridge (14) is movably sleeved on the outside of the U-shaped connecting pipe (1007). The size of the ultrafiltration membrane filter cartridge (14) and the stainless steel support mesh seat (1401) is compatible with the size of the mounting cylinder (4).

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