Water purification device, water purification system and water purification method

Abstract

The invention provides a water purification device, a water purification system and a water purification method, the device adopts a combined design of a filter roller, a storage roller, a filter layer and a spray flushing device, the filter roller is wrapped with the filter layer, and the wrapping thickness of the filter layer on the filter roller is adjusted as required so as to adapt to different filter precision requirements. When raw water passes through the filtering layer wrapped on the filtering roller, suspended matters are effectively intercepted, and filtered water enters the filtering roller and is discharged from the water outlet at the axial end part of the filtering roller. When the filtering layer needs to be cleaned, the storage roller and the filtering roller rotate synchronously, the filtering layer is unfolded between the storage roller and the filtering roller, and the filtering layer is cleaned through the spraying and flushing device, so that the filtering layer is always kept in an efficient filtering state. The novel water purification device, the water purification system and the water purification method have the advantages of efficient filtration, easiness in cleaning, large treatment capacity and good stability.

Description

Technical Field

[0001] The present invention relates to a water treatment device, a water treatment system and a water treatment method, and in particular to a water purification device, a water purification system and a water purification method for treating suspended matter in water, and belongs to the technical field of water treatment and purification equipment. Background Art

[0002] Both tap water and sewage need to be treated before they can be used or recycled. In the water treatment process, the first step is often to remove suspended matter in the water. The main reasons are as follows: 1. Protect subsequent treatment equipment: suspended matter (such as silt, organic matter, algae, etc.) will clog pipes, pumps and filters, increase equipment wear and maintenance costs. Removing suspended matter can extend the service life of equipment and reduce operating costs. 2. Improve the effect of subsequent treatment: suspended matter will interfere with the effect of subsequent treatment processes (such as disinfection, softening, reverse osmosis, etc.). For example, suspended matter will wrap bacteria or viruses and reduce the bactericidal efficiency of disinfectants. 3. Improve water quality sensory indicators: suspended matter will cause turbidity in water and affect the transparency and color of water. Removing suspended matter can improve the sensory quality of water, making it clearer and more acceptable. 4. Reduce harmful substances: suspended matter may adsorb pollutants such as heavy metals and organic matter. Removing suspended matter can reduce the content of these harmful substances. 5. Meet water quality standards: Drinking water and industrial water have strict restrictions on the content of suspended matter. Removing suspended matter is an indispensable key step to ensure that water quality meets standards. 6. Reduce treatment costs: Removing suspended solids in advance can reduce the burden of subsequent treatment processes, reduce the amount of reagents used and energy consumption. Therefore, removing suspended solids is a basic step in water treatment, which can protect equipment, improve treatment effects, improve water quality and reduce costs. It is the key to ensuring water quality safety and economic operation.

[0003] In the field of marine aquaculture, especially for the aquaculture of high economic value aquatic products, it is a common practice to use untreated seawater to construct the aquaculture environment. However, the suspended matter contained in seawater, such as silt, will have a negative impact on the survival and growth of aquatic organisms. Therefore, in order to ensure the suitability of the aquaculture environment, filtration technology must be used to effectively remove these suspended matter. In addition, in order to simulate the natural seawater environment, the pool water needs to be replaced regularly during the aquaculture process, which creates a huge demand for seawater.

[0004] In order to solve the problem of suspended matter (such as silt) in seawater, people have developed a variety of technologies, including processes such as precipitation and filtration. However, many of these technologies involve chemical treatment, and chemically treated water may have unknown negative effects on the cultivation of aquatic organisms. At the same time, the cost of this treatment method is relatively high. Although traditional filtration technology can effectively remove suspended matter (such as silt) in seawater, the filter medium is prone to clogging during long-term use, which leads to the need for frequent replacement of the filter medium. Frequent changes in breeding conditions not only increase the cost burden, but may also weaken the breeding efficiency. Taking grouper as an example, it needs to be cultivated in a flowing water environment. Insufficient water exchange or excessive breeding density will cause excrement to pollute the water body, thereby affecting the water quality. At present, many breeders use seabed sand filtration technology to treat seawater. Although it can remove some silt, the sand filtration system is prone to clogging, and a large amount of manpower and clean water are required for backwashing, which increases operating costs and labor intensity. In addition, the composition of seawater obtained by seabed sand filtration fluctuates greatly over time, and the stability is poor, which is not conducive to aquatic product breeding.

[0005] In the context of the current rapid development of science and technology, there are some significant limitations in the field of filtration technology. Take the microfiltration machine as an example. Although it provides high convenience in cleaning, its filtration accuracy is not ideal, and it is mainly suitable for removing larger impurities, such as sand or leaves. For finer sediment particles, its removal effect is quite limited; at the same time, its processing capacity is small and cannot meet the demand for return water in marine aquaculture. Furthermore, although ultrafiltration equipment has shown certain capabilities in treating a certain amount of filtered water, its filtration capacity is still significantly limited, and it is difficult to meet the high standards of large-scale water treatment. As a long-standing filtration method, the sand filter has an advantage in cost, but cleaning is complicated and time-consuming, and maintenance is difficult; and the filtration stability of seawater is poor, resulting in fluctuations in water quality components. Although the sedimentation tank can remove suspended matter, the treatment cycle is long and the efficiency is low, which makes it difficult to meet the high efficiency needs of aquaculture.

[0006] In summary, existing filtration technologies have defects in accuracy, water volume, cleaning convenience and processing time, and urgently need to be improved and innovated to achieve efficient, economical and environmentally friendly filtration. Especially in the field of marine aquaculture, these technical bottlenecks not only affect the stability of water quality, but also directly affect the healthy growth of aquaculture organisms, thereby affecting the sustainable development of the entire industry. Summary of the invention

[0007] In view of the problems existing in the prior art, the purpose of the present invention is to propose a new type of water purification device, water purification system and water purification method, which have the advantages of high efficiency filtration, easy cleaning, large processing capacity and good stability. The device adopts a combination design of a filter drum, a storage drum, a filter layer and a spray flushing device. By wrapping the filter layer on the filter drum, the wrapping thickness of the filter layer on the filter drum is adjusted as needed to meet different requirements of filtration accuracy. The raw water flows through the filter layer on the surface of the filter drum, and the suspended impurities are effectively intercepted, while the purified water body smoothly enters the inside of the drum and is finally discharged from the drain port at the axial end. When the filter layer needs to be cleaned, the storage drum rotates synchronously with the filter drum, the filter layer is unfolded between the storage drum and the filter drum, and the filter layer is regularly cleaned by the spray flushing device to ensure that the filter layer always maintains an efficient filtration state. The sewage generated during the cleaning process is discharged from the flushing sink, and no secondary pollution is generated to the raw water and the purified water. This system not only significantly enhances the filtration efficiency and water quality stability, but also has the ability to flexibly adjust the filtration accuracy as needed, successfully overcomes many challenges in traditional filtration technology, and brings solid technical support to marine aquaculture and a wide range of water treatment fields. At the same time, the water purification device and the water purification system provided by the present invention do not use any chemicals, thereby eliminating the interference of external factors on aquaculture caused by the water purification process.

[0008] According to a first embodiment provided by the present invention, a water purification device is provided.

[0009] A water purification device comprises a pool, a support, a filter drum, a storage drum, a filter layer, a flushing water tank, a first guide drum, and a spray device. The support is arranged in the pool. The filter drum is arranged below the support and in the pool. The storage drum is arranged above the support. A water inlet is arranged on the pool. The surface of the filter drum is provided with pores, and the interior is a hollow structure. An axial end of the filter drum is provided with a water outlet, and the water outlet is communicated with the hollow part inside the filter drum. The flushing water tank is arranged in the middle of the support and is located between the storage drum and the filter drum. The flushing water tank is a U-shaped structure with an open upper end. The first guide drum is arranged on the support or the flushing water tank and is located above one side edge of the flushing water tank. The spray device is arranged above the flushing water tank. A second guide drum is arranged in the flushing water tank. One end of the filter layer is connected to the storage drum, and the other end passes through the bottom of the second guide drum and the top of the first guide drum in sequence and then is connected to the filter drum. A sewage outlet is arranged on the flushing water tank.

[0010] Preferably, the device further comprises a third guide roller. The third guide roller is arranged above the edge of the other side of the flushing tank. One end of the filter layer is connected to the receiving roller, and the other end passes through the bottom of the third guide roller, the bottom of the second guide roller, and the top of the first guide roller in sequence, and then is connected to the filter roller.

[0011] Preferably, the device further comprises a fourth guide roller group. The fourth guide roller group is arranged above the edge of the other side of the flushing tank. The fourth guide roller group comprises two rollers arranged side by side. One end of the filter layer is connected to the receiving roller, and the other end passes through the gap between the two rollers in the fourth guide roller group, the bottom of the second guide roller, the top of the first guide roller, and then is connected to the filter roller.

[0012] Preferably, the device further comprises a first driving mechanism and a second driving mechanism. The first driving mechanism is connected to the storage drum and drives the storage drum to rotate. The second driving mechanism is connected to the filter drum and drives the filter drum to rotate.

[0013] Preferably, the first driving mechanism includes a driving motor and a transmission device. The storage drum is connected to the bracket via a bearing. The driving motor is connected to the storage drum via the transmission device and drives the storage drum to rotate, and the rotation of the storage drum drives the filter layer to move. The second driving mechanism includes a driving motor and a transmission device. The filter drum is connected to the bracket via a bearing. The driving motor is connected to the filter drum via the transmission device and drives the filter drum to rotate, and the rotation of the filter drum drives the filter layer to move.

[0014] Preferably, the transmission device includes gears and chains, the output ends of the first driving mechanism and the second driving mechanism are provided with gears, and the ends of the storage drum and the filter drum are provided with gears. The gear on the first driving mechanism is connected to the gear on the storage drum through a chain. The gear on the second driving mechanism is connected to the gear on the filter drum.

[0015] Preferably, the filter layer comprises a filter section and a traction section, wherein one end of the filter section is connected to one end of the traction section, the other end of the filter section is connected to the storage drum, and the other end of the traction section is connected to the filter drum.

[0016] Preferably, the filter layer comprises a filter section, a first traction section and a second traction section. The filter section is arranged between the first traction section and the second traction section, the other end of the first traction section is connected to the storage drum, and the other end of the second traction section is connected to the filter drum.

[0017] Preferably, the device further comprises a traction rope. One end of the filter layer is connected to the storage drum via the traction rope, and the other end of the filter layer is connected to the filter drum via the traction rope.

[0018] Preferably, the device further comprises a traction rope, the two ends of which are respectively connected to the filter drum and the storage drum, and the filter layer is fixed on the traction rope.

[0019] Preferably, a plurality of spray heads are provided on the spray device along the axial length direction of the second guide roller, and the water outlet direction of the spray heads is downward or sideways downward.

[0020] Preferably, a liquid level meter is provided in the water pool.

[0021] Preferably, the system further comprises a control system, which is connected to the liquid level meter, the first drive mechanism, the second drive mechanism, and the spray device.

[0022] In the present invention, the filter drum and / or the storage drum is a cylindrical structure or a square cylindrical structure.

[0023] Preferably, the outer diameter of the filter drum is 5-500 cm.

[0024] Preferably, the inner diameter of the pores on the surface of the filter drum is greater than 0.5 cm.

[0025] Preferably, the first guide roller, the second guide roller, the third guide roller and the fourth guide roller group are independently connected to the bracket via bearings.

[0026] Preferably, the first guide roller, the second guide roller, the third guide roller and the fourth guide roller group are respectively and independently fixedly connected to the bracket, and movable sleeves are provided on the outer sides of the rollers of the first guide roller, the second guide roller, the third guide roller and the fourth guide roller group.

[0027] In the present invention, the length of the traction section or the second traction section is not less than the distance between the filter drum and the first guide drum.

[0028] Preferably, the filter section on the filter layer is a filter cloth, preferably a filter cloth with fluff, and the pore size of the filter cloth is less than 50 μm, preferably less than 20 μm, more preferably 1-15 μm, such as 10 μm.

[0029] Preferably, the filter layer is composed of a filter cloth and fluff arranged on the filter cloth. The pore size of the filter cloth is 5-15 μm, and the length of the fluff is 0-50 mm; preferably, the pore size of the filter cloth is 8-12 μm, and the length of the fluff is 5-20 mm. The filter cloth has two functions: one is to fix the fluff, and the other is to intercept suspended matter with larger particle sizes. The fluff also has two functions: one is to intercept suspended matter with smaller particle sizes, and the other is to adsorb suspended matter.

[0030] Preferably, the traction section or the second traction section is a rope or a mesh cloth, and the pore size of the mesh cloth is greater than 2 mm, preferably greater than 5 mm.

[0031] According to a second embodiment provided by the present invention, a water purification system is provided.

[0032] A water purification system, characterized in that the system comprises n water purification devices described in the first embodiment. The n water purification devices are connected in parallel and / or in series to form a water purification system.

[0033] Preferably, when the water purification devices are connected in parallel, the water inlets of each water purification device are connected to the water inlet pipe after being merged through water pipes. The water outlets of each water purification device are connected to the water outlet pipe after being merged through water pipes.

[0034] Preferably, when the water purification devices are connected in series, the water outlet of the upper-stage water purification device is connected to the water inlet of the lower-stage water purification device to form a multi-stage water purification system.

[0035] Preferably, n is 2-20, preferably 3-10.

[0036] According to a third embodiment provided by the present invention, a use of a water purification system is provided.

[0037] According to the use of the water purification device according to the first embodiment or the water purification system according to the second embodiment, the device or system is used for water purification.

[0038] Preferably, the device or system is used to filter suspended matter in seawater or sewage.

[0039] According to a third embodiment provided by the present invention, a method for purifying water is provided.

[0040] A method for purifying water using the water purification device described in the first embodiment, the method comprising the following steps:

[0041] S1. Connect the filter layer between the receiving drum and the filter drum. The length of the filter layer is greater than the distance between the receiving drum and the filter drum. Wrap the filter layer on the filter drum.

[0042] S2. Pour raw water into the pool, and the filter drum and the filter layer on the filter drum are submerged in the raw water. The raw water passes through the filter layer on the filter drum and enters the hollow part of the filter drum. The filter layer filters the raw water to obtain treated water. The treated clean water is discharged from the water outlet at the axial end of the filter drum.

[0043] S3, cleaning: stop water intake, rotate the receiving drum, the receiving drum drives the filter layer to spread out the filter layer wrapped on the filter drum, and spray water in the flushing tank and the spray device to clean the filter layer for the filter section.

[0044] S4. After cleaning, rotate the filter drum, and the filter drum drives the filter layer to wrap around the outside of the filter drum, inject raw water into the pool, and continue the water purification work.

[0045] In the present invention, a support is arranged in a water pool, a filter drum and a receiving drum are arranged on the support, a filter layer is connected between the two, the filter drum is wrapped with the filter layer, the pore structure of the filter drum is used to support the filter layer, the hollow design of the filter drum is used to discharge water, and water is filtered through the filter layer on the filter drum. At the same time, by setting the receiving drum, the filter layer can be pulled out for replacement or cleaning after being clogged, thereby solving the problem that the filter material is prone to clogging during long-term use.

[0046] The water pool of the device is used to hold the water to be treated, and the bracket is used to support the filter drum, the storage drum, the flushing sink and other components. The filter layer is wrapped around the outside of the filter drum, and the water is filtered through the filter layer when the water flows through, and the suspended matter in the raw water is filtered out. The hollow structure of the filter drum is used to discharge the filtered water (clean water). One end of the filter layer is fixed to the filter drum, and the other end is fixed to the storage drum. The filter layer is wrapped on the filter drum to filter the water to be treated. Depending on the different uses of purified water, the number of layers of the filter layer wrapped on the filter drum can be 1-20 layers, preferably 2-10 layers. Increasing the number of filter layers can indeed improve the filtering effect, but at the same time, it is also necessary to carefully weigh the relationship between the filtering efficiency and the load that the equipment can withstand. The filter layer material can be selected from polypropylene, nylon, etc. to ensure durability and filtering accuracy.

[0047] When the filter layer needs to be cleaned, the storage drum rotates, driving the filter drum to rotate, thereby unfolding the filter layer from the filter drum. The unfolded part of the filter layer passes through the flushing sink position in turn, and the part that previously played a filtering role is unfolded in the flushing sink between the storage drum and the filter drum. Water is sprayed through the spray device to clean the filter layer. When the cleaning is completed, the filter drum rotates, thereby driving the filter layer to move. The movement of the filter layer drives the rotation of the storage drum, and the filter layer is rewrapped on the filter drum to start a new round of filtration. After the filter layer is rewrapped, the equipment resumes water intake, and the raw water is purified again through the filter layer to ensure that the water quality is stable and meets the standards. This cycle effectively extends the service life of the filter layer, improves the overall purification efficiency, and ensures the continuous and efficient operation of the equipment. By optimizing the number of filter layers and material selection, the device not only improves the filtration effect, but also reduces the maintenance frequency, ensuring long-term stable water quality output. It has a clever design and is easy to operate, suitable for a variety of water quality treatment scenarios.

[0048] In the present invention, different filter layer materials, filter layers with different pore sizes and porosities can be selected according to the requirements of the treated water, and the number of filter layers wrapped on the filter drum can also be adjusted.

[0049] The innovation of the present invention lies in that the filter layer is driven to move between the filter drum and the storage drum by a mechanical transmission device. When the amount of suspended matter accumulated on the surface of the filter layer reaches a certain amount, the drive device will start, drive the storage drum to rotate, and transfer the filter layer to the flushing tank. Then the spray device will clean or replace the key filter area of ​​the filter layer. In this way, the clogging problem of the filter layer is solved, and the continuous and stable filtering effect is guaranteed.

[0050] In the technical solution of the present invention, the device further includes a flushing water tank, a first guide roller, and a spray device. By configuring the flushing water tank, the first guide roller and the spray device, the device can effectively clean the filter layer. The flushing water tank is arranged between the storage drum and the filter drum, and has a U-shaped structure, which is convenient for concentrating and discharging water containing suspended matter when flushing the filter layer. The configuration of the first guide roller and the second guide roller ensures that the filter layer moves smoothly in the flushing water tank. The spray device is located above the flushing water tank, and the filter layer is sprayed and cleaned through multiple spray heads, and the water outlet direction of the spray head points downward or sideward to ensure the cleaning effect. The mutual cooperation of these technical features can effectively prevent the filter layer from being blocked and maintain the filtering efficiency. In addition, the drainage port is cleverly designed at the bottom of the flushing water tank to ensure that the cleaning wastewater can be discharged in time, effectively avoiding the risk of secondary pollution. The spray device flexibly adjusts the water volume and pressure according to the accumulation of suspended matter, so as to ensure that the cleaning effect is optimal. The surface of the guide roller is covered with wear-resistant material, which effectively extends its service life and further improves the operation stability of the overall equipment. These detailed optimization measures have significantly improved the reliability and ease of operation of the device, and fully met the diverse water quality treatment needs.

[0051] In addition, the arrangement of the first guide roller and the second guide roller can not only guide the movement of the filter layer, but also prevent the filter layer from being offset or knotted during the movement, thereby ensuring the smooth progress of the cleaning process. The spray heads of the spray device are distributed along the length direction of the second guide roller, which can ensure that the filter layer can be cleaned evenly over the entire width to avoid incomplete cleaning. The water outlet direction of the spray head is downward or sideways. This design enables the cleaning water flow to act directly on the filter layer to improve the cleaning efficiency. At the same time, the water pressure and water volume of the spray device can be adjusted according to actual needs to ensure efficient cleaning under different water quality conditions. The surface coating of the guide roller is not only wear-resistant, but also has a certain self-cleaning function, which reduces the maintenance frequency. The modular design of the overall device makes it easy to replace each component, prolongs the service life of the equipment, and ensures the stability of water purification treatment.

[0052] In a preferred embodiment of the present invention, the third guide roller is arranged above the edge of the other side of the flushing water tank, which increases the number of guide rollers of the filter layer, so that the filter layer has better guiding performance and stability when passing through the flushing water tank. One end of the filter layer is connected to the storage roller, and the other end passes through the bottom of the third guide roller, the bottom of the second guide roller, the top of the first guide roller, and finally connected to the filter roller. This type of design ensures that the filter layer can maintain a stable state during the movement, and reduces the risk of adverse effects on the cleaning effect due to the displacement or relaxation of the filter layer. By adding the third guide roller, the movement of the filter layer when passing through the flushing water tank is more stable, effectively avoiding the displacement and relaxation problems that may occur in the filter layer during the movement, thereby improving the filtration efficiency and the overall operation stability of the device. In addition, the setting of the third guide roller further optimizes the guide path of the filter layer, ensuring that it can still maintain uniform tension during high-speed movement, reducing the wear caused by friction, and extending the service life of the filter layer. At the same time, this design significantly improves the adaptability of the mechanical filter to complex water quality, ensuring that efficient and stable filtration effects can be maintained under various working conditions. For example, mechanical filters can effectively remove suspended matter, solids, organic matter and other impurities in water, and can reduce the turbidity of the outlet water to a low level even when the turbidity of the inlet water is high. In addition, the filter has high filtration accuracy, fast filtration speed, small footprint, low water consumption, and can adjust the filtration parameters according to actual needs, thus providing reliable guarantee for water purification. Through this multi-roller guide system, the movement trajectory of the filter layer at each stage is accurately controlled, ensuring the simultaneous and efficient cleaning and filtration. The synergy between the rollers further improves the overall coordination and operational flexibility of the device, making the water treatment process smoother and significantly improving the comprehensive performance of the equipment and the stability of long-term operation.

[0053] Furthermore, the third guide roller can be connected to the bracket through a bearing so that it can rotate freely, reducing the friction resistance of the filter layer during movement. As a preferred solution, the outer surface of the third guide roller is additionally provided with an anti-skid pattern design, aiming to enhance the friction of the filter layer and effectively prevent it from sliding during movement. In addition, the third guide roller is made of corrosion-resistant and wear-resistant high-performance materials to ensure its extended service life.

[0054] In a preferred embodiment of the present invention, a fourth guide roller group is added, which is composed of two rollers arranged in parallel and arranged above the edge of the other side of the flushing tank. By introducing the fourth guide roller group, the filter layer can pass through the gap between the two rollers during movement, thereby enhancing the guiding stability of the filter layer and preventing the filter layer from being offset or unstable during movement. In this way, the stable operation of the filter layer in the water purification device is ensured, and the filtering effect and reliability of the device are improved. The roller surface of the fourth guide roller group can also be designed as an anti-skid pattern to enhance friction and ensure that the filter layer does not slip during high-speed movement. At the same time, the roller group is made of high-strength material, has strong durability, effectively copes with complex water quality environments, and further ensures the stability of the filter layer in long-term operation and the overall efficiency of the device. Through the synergistic effect of this multi-stage guide roller system, the moving trajectory of the filter layer is accurately controlled, ensuring the synchronization and efficiency of the cleaning and filtering processes, and significantly improving the water purification effect. The optimized configuration between the drums further enhances the stability and adaptability of the device, enabling the equipment to perform well in complex water treatment, prolonging its service life and providing a more reliable guarantee for water purification.

[0055] The fourth guide roller group can be arranged in a variety of ways. For example, the roller can be connected to the bracket through a bearing to ensure that the roller can rotate freely and reduce the wear of the filter layer. Furthermore, the surface of the roller can be made of anti-slip material to improve the guiding effect of the filter layer. In addition, the gap between the rollers can be adjusted according to the thickness of the filter layer to adapt to different types of filter layers.

[0056] In a preferred embodiment of the present invention, the configuration of the first drive mechanism and the second drive mechanism enables the storage drum and the filter drum to rotate independently. By driving the rotation of the storage drum and the filter drum, the filter layer can be moved, so that the filter layer is wrapped on the filter drum, or the filter layer is located between the filter drum and the storage drum, and the position of the filter layer is adjusted to achieve filtering, automatic cleaning or renewal of the filter layer, thereby preventing the clogging problem caused by long-term use of the filter material. This design not only greatly improves the filtration efficiency, but also effectively reduces the number of manual maintenance and reduces maintenance costs. Through this independent drive mechanism, the replacement and cleaning process of the filter layer is more convenient and efficient, ensuring the continuous and stable operation of the water purification device. At the same time, the optimized design of each component further improves the overall performance of the device, so that it can show excellent filtering effects under various water quality environments, providing users with more reliable water quality assurance. In addition, the independent drive mechanism also allows the working state of the filter layer to be adjusted in real time according to water quality changes, ensuring that high-efficiency filtration can be maintained under different water quality conditions. The coordinated work of various components not only effectively extends the service life of the equipment, but also significantly enhances the environmental adaptability and operational convenience of the water purification device, ensuring that users can continue to obtain a stable and high-quality water source. When the filter layer needs to be wrapped on the filter drum, the second drive mechanism starts to drive the filter drum to rotate, and the storage drum is in a driven state, so that the filter layer fits tightly to the surface of the filter drum, and the filter layer is wrapped on the outside of the filter drum. When the filter layer needs to be cleaned, the first drive mechanism starts to drive the storage drum to rotate, and the filter drum is in a driven state, so that the filter layer unfolds and enters the cleaning area, achieving efficient automatic cleaning and ensuring that the filter layer restores the best filtering performance. This flexible drive switching mechanism not only improves the utilization efficiency of the filter layer, but also greatly improves the automation level of the equipment, reduces the reliance on manual operation, and further enhances the intelligence level and reliability of the water purification device.

[0057] In the present invention, the driving mechanism may adopt a motor or other forms of power drive devices. The transmission device may include a chain, a belt, a gear or a screw. When driven by a motor, the speed can be adjusted by a frequency converter to achieve precise control; the use of gear transmission can provide higher transmission efficiency and stability, ensuring the coordinated operation of various components. Screw transmission is suitable for scenarios that require precise positioning, improving the accuracy of the overall operation. Through this variety of transmission options, it can be flexibly configured according to actual needs to further optimize equipment performance. The precise coordination of various components ensures the stable operation of the device under different working conditions and improves the user experience.

[0058] In this invention, the filter drum and the storage drum can be cylindrical or square, which meets the diverse needs of water purification devices and adapts to different application scenarios. The cylindrical structure is easy to produce and maintain, while the square structure is suitable for specific space layouts.

[0059] In the present invention, the cylinder can be designed in a circular or oval shape. The square cylinder can be designed in a rectangular, square, pentagonal, hexagonal, or other shapes with irregular / regular polygonal cross-sections. This diversified design not only improves the aesthetics and practicality of the device, but also enables it to flexibly adapt to various installation environments and space constraints, further enhancing the usability and market competitiveness of the equipment. The carefully designed structural optimization allows users to choose the best configuration according to their needs, maximize the purification effect, reduce costs, and improve the experience.

[0060] In the present invention, a liquid level meter is configured in the water pool, which can monitor the water level in real time, ensure the water volume control during the water purification process, prevent water overflow or shortage, and ensure the stability and continuity of the treatment effect. At the same time, the configuration of the liquid level meter can monitor whether the filter layer needs to be cleaned. Once the filter layer is clogged after a period of use, affecting the filtering effect, the liquid level in the water pool will rise, and the liquid level meter is used to monitor whether the filter layer needs to be flushed. The liquid level meter is linked to the control system to automatically start the cleaning program to ensure that the filter layer resumes function in time. In addition, the device is equipped with advanced water quality monitoring sensors, such as dissolved oxygen (DO) sensors, ORP sensors, PH sensors and conductivity sensors, which can monitor water quality changes in real time, automatically adjust purification parameters, ensure the continuous improvement of water purification effects, and ensure that the water quality is stable and up to standard.

[0061] In the present invention, different materials and manufacturing processes can be used for the filter drum and the storage drum to meet different use environments and needs. For example, the cylindrical filter drum can be made of stainless steel through welding or casting, and has the characteristics of corrosion resistance and easy cleaning. The square cylindrical filter drum can be made of high-strength plastic through injection molding, which has the advantages of lightness and high cost-effectiveness. There are many types of liquid level gauges, including float type, ultrasonic type and capacitive type, each of which realizes water level monitoring based on different working principles. For example, the float type liquid level gauge uses the principle of buoyancy and is suitable for intuitive reading and rapid monitoring; the ultrasonic liquid level gauge measures the water level by transmitting and receiving ultrasonic pulses, which is suitable for non-contact measurement and long-distance monitoring; the capacitive liquid level gauge determines the liquid level by measuring the change in capacitance value, which is suitable for corrosive media and high-pressure environments. Selecting the appropriate type of liquid level gauge and installation location can ensure accurate water level monitoring and control.

[0062] In the present invention, the first guide roller, the second guide roller, the third guide roller, and the fourth guide roller group are independently connected to the bracket through bearings. This connection method can make the roller rotate freely, reduce friction, and extend the service life; or the first guide roller, the second guide roller, the third guide roller, and the fourth guide roller group are independently fixedly connected to the bracket. This connection method can ensure the stability of the roller, and a movable sleeve is provided on the outside of the roller. The movable sleeve can rotate freely when the roller is fixed, further reducing friction and facilitating maintenance and replacement. Through these technical means, the multiple problems of the connection method between the guide roller and the bracket can be solved. At the same time, the setting of the movable sleeve can reduce friction, facilitate maintenance and replacement, thereby improving the overall efficiency and service life of the water purification device. For example, the bearing connection method can adopt ball bearings or sliding bearings, which can provide good rotation performance and durability. For the fixed connection method, welding or bolt connection can be adopted to ensure the firmness of the connection. The movable sleeve can be made of wear-resistant materials, such as polytetrafluoroethylene or nylon, to reduce friction and extend service life. The design of the movable sleeve incorporates a built-in lubrication system to further reduce friction and reduce the frequency of maintenance.

[0063] In the present invention, since the filter layer needs to be replaced or cleaned regularly, but the flushing water tank is located above the filter drum, after the filter layer is unfolded from the filter drum, the filter layer located between the flushing water tank and the filter drum cannot be cleaned in the flushing water tank; therefore, after the filter layer is unfolded, the part located between the flushing water tank and the filter drum is designed to be a detachable structure, which is convenient for separate disassembly and cleaning. Alternatively, on the filter layer, the part located between the flushing water tank and the filter drum after the filter layer is unfolded is designed as a traction section with a larger pore spacing or is directly connected by a traction rope. The material of the traction section or traction rope must have high strength and corrosion resistance, such as polyester fiber or stainless steel wire, to ensure that it is not easy to break during repeated use. This design simplifies the cleaning process and extends the service life of the filter layer, thereby ensuring the stability and efficiency of water purification.

[0064] In the present invention, the design of the filter layer consists of two parts: a filter section and a traction section. The filter section is responsible for performing the actual filtering operation, while the traction section ensures that the filter layer can move smoothly between the storage drum and the filter drum. This type of design allows the filter layer to transition stably between the two drums, ensuring the continuity and efficiency of the filtering process. The filter layer may also include a filter section, a first traction section, and a second traction section, ensuring that the filter section is firmly placed between the two traction sections to achieve a more stable filtering effect. In addition, the use of a traction rope further improves the stability and positioning accuracy of the filter layer movement, thereby improving the filtering efficiency and overall reliability.

[0065] One end of the filter section is connected to one end of the traction section, the other end of the filter section is connected to the storage drum, and the other end of the traction section is connected to the filter drum. The design can realize the movement of the filter layer by the rotation of the drum. The filter layer includes a filter section, a first traction section and a second traction section, so that the filter section can be stably located between the two traction sections, thereby achieving a more stable filtering effect. The use of traction ropes further ensures the stable movement and precise positioning of the filter layer, and improves the filtration efficiency and reliability. Specifically, the traction rope can be made of high-strength, corrosion-resistant materials, such as stainless steel wire ropes or polymer material ropes. These materials are resistant to seawater corrosion and can maintain the stability and durability of the filter layer after long-term use.

[0066] In the present invention, a water purification system is formed by connecting multiple water purification devices in parallel and / or in series, which solves the problems of existing filtering technology in multiple aspects such as filtering accuracy, filtered water volume, cleaning convenience and processing time. The parallel connection merges the water inlet and outlet of each device, thereby increasing the water volume processed by the system. The series connection forms multi-stage purification, which significantly improves the filtering accuracy. By adopting the method of connecting multiple water purification devices in parallel and / or in series, the technical solution of the present application can effectively solve the problems of existing filtering technology in multiple aspects such as filtering accuracy, filtered water volume, cleaning convenience and processing time. The parallel connection increases the system's processed water volume, the series connection improves the system's filtering accuracy, and the combined use of multiple sets of water purification devices improves the overall efficiency and stability of the system, ensuring that it can operate efficiently under different water quality conditions, and further improving the adaptability and stability of the water purification system.

[0067] Further, the water purification system of the present application can be realized in many ways. For example, the water purification device can be connected by standardized water pipes and joints for ease of installation and maintenance. For the mode of parallel connection, multiple water pipes can be used to be connected to the water inlet and water outlet of each water purification device respectively, and then merged into the main water inlet pipe and the main water outlet pipe. For the mode of series connection, the water outlet of the upper level water purification device can be connected to the water inlet of the next level water purification device by directly connecting or connecting by short water pipes. As a preferred embodiment, the water purification system can be equipped with an automatic control system for monitoring and adjusting the operating state of each water purification device to ensure the best operating effect of the system.

[0068] When seawater containing suspended particles is introduced into the pool through the water inlet, it will be purified by the filter layer, and the clean water will flow into the filter drum and be discharged through the outlet. As the filter layer is used continuously, suspended particles and other impurities will gradually accumulate on its surface, thus affecting the filtration efficiency. In this case, the drive mechanism will be activated to cause the storage drum and the filter drum to rotate. Driven by the drum, the filter layer moves to the flushing tank, and the spray device then thoroughly cleans the filter layer to remove the accumulated suspended particles and other impurities. The cleaned filter layer can restore its performance, thus achieving the goal of recycling. During the cleaning process, the system automatically adjusts the spray intensity and flushing time to ensure that the filter layer is thoroughly cleaned and avoid secondary pollution. The cleaned filter layer re-enters the working state, maintaining the efficient operation of the system and extending its service life.

[0069] In addition, the water purification device of the present invention can also guide the moving path of the filter layer by setting a plurality of guide rollers, so as to ensure that the filter layer can move steadily and smoothly between the storage roller and the filter roller. At the same time, by using advanced monitoring equipment such as a liquid level gauge, the dynamics of the water level in the pool can be grasped in real time, thereby ensuring that the device is always in normal operation. The guide roller has been precisely designed to effectively optimize the travel path of the filter layer and significantly reduce friction loss. The real-time data feedback of the liquid level gauge provides the system with a precise basis for water level control, ensuring a constant amount of water in the pool and avoiding a decrease in filtration efficiency due to water level fluctuations. This series of refined designs not only improves the operating stability of the device, but also significantly extends the service life of the equipment, reflecting the outstanding ingenuity of the present invention in detail processing.

[0070] In the process of constructing a water purification system, multiple water purification devices of the present invention can be connected in parallel and / or in series to form a multi-stage water purification system. This can not only improve the processing efficiency, but also flexibly adjust the processing capacity and processing effect of the system according to actual needs. Through parallel or series combination, the system can adapt to different water quality and flow requirements to achieve efficient purification. The automatic control system monitors the status of each device in real time to ensure the overall stable operation. The multi-stage purification system can automatically adjust the processing intensity according to the changes in water quality, further improve the water purification effect, and ensure that the water quality meets the standards.

[0071] In the present invention, the length of a single water purification device is 50-5000cm, preferably 100-2000cm. The width is 20-2000cm, preferably 50-1000cm. The length of the filter drum is 60-4000cm, preferably 100-3000cm. The width is 30-1500cm, preferably 60-800cm. The diameter of the filter drum is 10-500cm, preferably 20-300cm. Through scientific and reasonable size design, it is ensured that the device can operate efficiently in different application scenarios, taking into account both space utilization and purification effect.

[0072] Compared with the prior art, the water purification device and water purification system provided by the present invention have the following beneficial technical effects:

[0073] 1. The present application uses a filter layer to filter seawater. The number of filter layers on the filter drum can be set according to actual needs. It can effectively remove large particles and small pollutants such as mud. The turbidity of the filtered water basically reaches 0-5mg / L; the treatment effect on seawater is good, the incoming raw water SS (turbidity) is 61mg / L, the first-level effluent is 21mg / L, the second-level effluent is 1-4.5mg / L, and the suspended solids in the third-level effluent are less than 1mg / L. In addition, the present invention reduces the water turbidity step by step through multi-stage filtration to ensure that the effluent quality is stable and meets the standards.

[0074] 2. The filter layer in the present application is arranged between the storage drum and the filter drum. When cleaning, the position of the filter layer can be adjusted by simply rotating the storage and filter drums, which is convenient for cleaning the filter area. The operation is simple, the filter layer can be recycled, and the filtering effect and efficiency can be ensured.

[0075] 3. In the present application, the present application cleverly sets up a flushing tank and accurately configures the flushing position inside the flushing tank, while ensuring that the filter position on the filter layer is properly placed in the flushing tank. The filter layer is flushed at this fixed position, and the flushing tank is responsible for collecting the sewage generated during the flushing process. This design effectively prevents the potential contamination of the treated water by the flushing water, thereby ensuring the high stability of the filtering effect. The sewage after flushing is discharged through a special pipe for further treatment to ensure no secondary pollution.

[0076] 4. The device of the present invention is applicable to the field of aquaculture and can purify the water quality of natural water bodies to meet the water quality standards required for aquaculture. In addition, the device can also be used for sewage treatment to effectively remove suspended solids (SS) in sewage, and is suitable for purification of lakes, rivers and other water bodies;

[0077] 5. The device involved in the present invention has the capacity to treat 2,000 to 4,000 tons of water per day, and the purification cost per ton of water only includes electricity costs, which is less than 0.1 yuan. The device does not require the use of any chemical agents, and no substances are added to the water during the treatment process. It is suitable for tap water, aquaculture water and sewage treatment. Through optimized design and material selection, the device can still maintain high efficiency and stability in long-term operation, significantly reduce maintenance costs, and improve overall economic benefits. Its wide applicability and environmental protection characteristics provide a strong guarantee for the sustainable use of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Figure 1 It is a three-dimensional structural diagram of a water purification device of the present invention;

[0079] Figure 2 This is a structural diagram of a support system in a water purification device of the present invention;

[0080] Figure 3 It is a front view of a water purification device of the present invention;

[0081] Figure 4 A schematic diagram and a cross-sectional diagram of a filter drum having a cylindrical structure in a water purification device of the present invention;

[0082] Figure 5 It is a schematic diagram and a cross-sectional diagram of a filter drum having a square cylinder structure in a water purification device of the present invention;

[0083] Figure 6 This is a transverse cross-sectional view of a first structure of a water purification device of the present invention;

[0084] Figure 7 It is a transverse cross-sectional view of a second structure of a water purification device of the present invention;

[0085] Figure 8 A third structural transverse cross-sectional view of a water purification device of the present invention;

[0086] Fig. 9 It is a schematic diagram of a first structure of a filter layer in a water purification device of the present invention;

[0087] Fig.10 It is a schematic diagram of a second structure of a filter layer in a water purification device of the present invention;

[0088] Fig.11 It is a schematic diagram of a third structure of a filter layer in a water purification device of the present invention;

[0089] Fig.12 It is a schematic diagram of the fourth structure of the filter layer in a water purification device of the present invention.

[0090] Reference numerals:

[0091] 1: pool; 101: water inlet; 2: bracket; 3: filter drum; 301: water outlet; 4: storage drum; 5: filter layer; 6: flushing sink; 601: second guide drum; 7: first guide drum; 8: spray device; 9: third guide drum; 10: fourth guide drum group; 11: first drive mechanism; 12: second drive mechanism; 13: sewage outlet. DETAILED DESCRIPTION

[0092] The technical solutions in the present application will be clearly and completely described below in conjunction with the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0093] In the description of the present application, the terms “first”, “second”, etc. are only used to distinguish the descriptions and should not be understood as indicating or implying relative importance.

[0094] Example 1

[0095] like Figure 1 and Figure 6 As shown, a water purification device comprises a pool 1, a bracket 2, a filter drum 3, a storage drum 4, a filter layer 5, a flushing water tank 6, a first guide drum 7, and a spray device 8. The bracket 2 is arranged in the pool 1. The filter drum 3 is arranged below the bracket 2 and located in the pool 1. The storage drum 4 is arranged above the bracket 2. A water inlet 101 is arranged on the pool 1. The surface of the filter drum 3 is provided with pores, and the interior is a hollow structure. An axial end of the filter drum 3 is provided with a water outlet 301, and the water outlet 301 is connected to the hollow part inside the filter drum 3. The flushing water tank 6 is arranged in the middle of the bracket 2 and is located between the storage drum 4 and the filter drum 3. The flushing water tank 6 is a U-shaped structure with an open upper end. The first guide drum 7 is arranged on the bracket 2 or the flushing water tank 6 and is located above the edge of one side of the flushing water tank 6. The spray device 8 is arranged above the flushing water tank 6. A second guide drum 601 is arranged in the flushing water tank 6. One end of the filter layer 5 is connected to the storage drum 4, and the other end passes through the bottom of the second guide drum 601 and the top of the first guide drum 7 in sequence and then is connected to the filter drum 3. The flushing tank 6 is provided with a sewage outlet 13.

[0096] Example 2

[0097] like Figure 7As shown, the embodiment 1 is repeated, except that the device further includes a third guide roller 9. The third guide roller 9 is arranged above the edge of the other side of the flushing tank 6. One end of the filter layer 5 is connected to the storage roller 4, and the other end passes through the bottom of the third guide roller 9, the bottom of the second guide roller 601, and the top of the first guide roller 7 in sequence, and then is connected to the filter roller 3.

[0098] Example 3

[0099] like Figure 8 As shown, the embodiment 1 is repeated, except that the device further includes a fourth guide roller group 10. The fourth guide roller group 10 is arranged above the edge of the other side of the flushing tank 6. The fourth guide roller group 10 includes two rollers arranged side by side. One end of the filter layer 5 is connected to the storage roller 4, and the other end passes through the gap between the two rollers in the fourth guide roller group 10, the bottom of the second guide roller 601, and the top of the first guide roller 7 in sequence, and then is connected to the filter roller 3.

[0100] Example 4

[0101] like Figure 2 and Figure 3 As shown, the embodiment 3 is repeated, except that the device further comprises a first driving mechanism 11 and a second driving mechanism 12. The first driving mechanism 11 is connected to the receiving drum 4 and drives the receiving drum 4 to rotate. The second driving mechanism 12 is connected to the filter drum 3 and drives the filter drum 3 to rotate.

[0102] The first driving mechanism 11 includes a driving motor and a transmission device. The storage drum 4 is connected to the bracket through a bearing. The driving motor is connected to the storage drum 4 through the transmission device and drives the storage drum 4 to rotate, and the rotation of the storage drum 4 drives the filter layer 5 to move. The second driving mechanism 12 includes a driving motor and a transmission device. The filter drum 3 is connected to the bracket through a bearing. The driving motor is connected to the filter drum 3 through the transmission device and drives the filter drum 3 to rotate, and the rotation of the filter drum 3 drives the filter layer 5 to move.

[0103] Example 5

[0104] Example 4 is repeated, except that the transmission device includes gears and chains, the output ends of the first driving mechanism 11 and the second driving mechanism 12 are provided with gears, and the ends of the storage drum 4 and the filter drum 3 are provided with gears. The gear on the first driving mechanism 11 is connected to the gear on the storage drum 4 through a chain. The gear on the second driving mechanism 12 is connected to the gear on the filter drum 3.

[0105] Example 6

[0106] like Fig. 9As shown, Example 5 is repeated, except that the filter layer 5 includes a filter section and a traction section. One end of the filter section is connected to one end of the traction section, the other end of the filter section is connected to the storage drum 4, and the other end of the traction section is connected to the filter drum 3. The length of the traction section is not less than the distance between the filter drum 3 and the first guide drum 7. The filter section is a filter cloth with fluff. The pore size of the filter cloth is 10μm, and the length of the fluff on the filter cloth is 12mm. The traction section is a mesh cloth, and the pore size of the mesh cloth is 10mm.

[0107] Example 7

[0108] like Fig.10 As shown, Example 5 is repeated, except that the filter layer 5 includes a filter section, a first traction section and a second traction section. The filter section is arranged in the middle of the first traction section and the second traction section, the other end of the first traction section is connected to the storage drum 4, and the other end of the second traction section is connected to the filter drum 3. The length of the second traction section is not less than the distance between the filter drum 3 and the first guide drum 7. The filter section is a filter cloth with fluff. The pore size of the filter cloth is 10μm, and the length of the fluff on the filter cloth is 12mm. The second traction section is a mesh cloth, and the pore size of the mesh cloth is 10mm.

[0109] Example 8

[0110] like Fig.11 As shown, Example 5 is repeated, except that the device further includes a traction rope. One end of the filter layer 5 is connected to the storage drum 4 through the traction rope, and the other end of the filter layer 5 is connected to the filter drum 3 through the traction rope. The filter layer is a filter cloth with fluff. The pore size of the filter cloth is 10 μm, and the length of the fluff on the filter cloth is 12 mm.

[0111] Example 9

[0112] like Fig.12 As shown, the embodiment 5 is repeated, except that the device further includes a traction rope. The two ends of the traction rope are respectively connected to the filter drum 3 and the storage drum 4, and the filter layer 5 is fixed on the traction rope. The filter layer is a filter cloth with fluff. The pore size of the filter cloth is 10 μm, and the length of the fluff on the filter cloth is 12 mm.

[0113] Example 10

[0114] Repeat Example 6, except that a plurality of spray heads are provided on the spray device 8 along the axial length direction of the second guide roller 601, and the water outlet direction of the spray heads is downward or sideward.

[0115] Embodiment 11

[0116] The embodiment 6 is repeated, except that a liquid level meter is provided in the water pool 1. The system further comprises a control system, which is connected with the liquid level meter, the first drive mechanism 11, the second drive mechanism 12, and the spray device 8.

[0117] Example 12

[0118] Example 10 was repeated, except that the filter drum 3 and the storage drum 4 were cylindrical structures. The outer diameter of the filter drum 3 was 50 cm. The inner diameter of the pores on the surface of the filter drum 3 was 1 cm.

[0119] Embodiment 13

[0120] Example 10 is repeated, except that the filter drum 3 and the storage drum 4 are square cylinder structures.

[0121] Embodiment 14

[0122] Example 12 is repeated, except that the first guide roller 7, the second guide roller 601, the third guide roller 9, and the fourth guide roller group 10 are independently connected to the bracket 2 via bearings.

[0123] Embodiment 15

[0124] Repeat Example 12, except that the first guide roller 7, the second guide roller 601, the third guide roller 9 and the fourth guide roller group 10 are respectively and independently fixedly connected to the bracket 2, and movable sleeves are provided on the outer sides of the rollers of the first guide roller 7, the second guide roller 601, the third guide roller 9 and the fourth guide roller group 10.

[0125] Example 16

[0126] A water purification system comprises two water purification devices described in Example 14. The two water purification devices are connected in parallel to form a water purification system.

[0127] Embodiment 17

[0128] A water purification system comprises two water purification devices described in Example 14. The two water purification devices are connected in series to form a two-stage water purification system.

[0129] Embodiment 18

[0130] A water purification system comprises eight water purification devices described in Example 14. The eight water purification devices are divided into two groups, each with four devices, and the four devices in each group are connected in parallel. The two groups of water purification systems are connected in series to form a two-stage water purification system.

[0131] Embodiment 19

[0132] A water purification system, comprising 9 water purification devices described in Example 14. The 9 water purification devices are divided into two groups: one group of 4 and the other group of 5, all connected in parallel. The 5 water purification devices connected in parallel constitute a primary water purification system. The 4 water purification devices connected in parallel constitute a secondary water purification system.

[0133] Embodiment 20

[0134] A water purification system comprises 9 water purification devices described in Example 14. The 9 water purification devices are divided into three groups, each with 3 devices, and the 3 devices in each group are connected in parallel. The three groups of water purification systems are connected in series to form a three-stage water purification system.

[0135] Embodiment 21

[0136] Example 18 is repeated, except that the water inlet 101 of each water purification device is connected to the water inlet pipe after being merged through a water pipe. The water outlet 301 of each water purification device is connected to the water outlet pipe after being merged through a water pipe.

[0137] Embodiment 22

[0138] Example 17 is repeated, except that the water outlet 301 of the upper-stage water purification device is connected to the water inlet 101 of the lower-stage water purification device to form a multi-stage water purification system.

[0139] Embodiment 23

[0140] A method for water purification, the method comprising the following steps:

[0141] S1. Connect the filter layer 5 between the storage drum 4 and the filter drum 3 . The length of the filter layer 5 is greater than the distance between the storage drum and the filter drum. Wrap the filter layer 5 on the filter drum 3 .

[0142] S2. Raw water is injected into the water pool 1, and the filter drum and the filter layer on the filter drum are submerged in the raw water. The raw water passes through the filter layer on the filter drum and enters the hollow part of the filter drum. The raw water is filtered by the filter layer to obtain treated water. The treated clean water is discharged from the water outlet at the axial end of the filter drum.

[0143] S3, cleaning: stop water intake, rotate the receiving drum, the receiving drum drives the filter layer so that the filter layer coated on the filter drum is unfolded, and water is sprayed in the flushing tank 6 and the spray device 8 to clean the filter layer for the filter section.

[0144] S4. After cleaning, the filter drum is rotated, and the filter drum drives the filter layer to wrap around the outside of the filter drum, and raw water is injected into the pool 1 to continue the water purification work.

[0145] According to the method described in Example 23, the water purification device or system of different embodiments is used to treat seawater (raw water), and the number of filter layers wrapped on the filter drum is 8; the experimental results are as follows:

[0146]

[0147] Note: The determination standard of suspended solids is based on the national standard GB / T 11901-1989 "Gravimetric method for determination of suspended solids in water quality".

[0148] At the same time, the water purification device provided by the present invention can process seawater. Compared with the raw water (seawater), the contents of chloride ions, sodium ions, magnesium ions, calcium ions, sulfate ions, and potassium ions in the treated clean water have not changed, and the original characteristics and chemical composition of seawater are maintained. The experimental results show that the water purification device of the present invention is effective in removing suspended matter, and can keep the chemical composition of seawater stable, and is suitable for a variety of water purification needs. At the same time, the device has low energy consumption, simple operation, low maintenance cost, and wide application value during the treatment process. The experimental data fully verify its high efficiency and reliability in practical applications, and provide a new technical solution for water resource purification. The experimental data show that Examples 14, 17, and 20 reduce the suspended matter (SS) in raw water from 61 mg / L to 21 mg / L, 2.4 mg / L, and 0.2 mg / L, respectively, which meets the national standard GB / T11901-1989. This device not only has the ability to efficiently remove suspended solids, but also ensures the stability of the chemical composition of seawater. It is widely applicable to a variety of water purification scenarios. In addition, its low energy consumption, convenient operation, and low maintenance cost make its promotion prospects extremely broad. After repeated experimental verification, the device has demonstrated excellent purification performance under various water quality conditions, once again confirming its high stability and wide applicability in practical applications. Its innovative design not only improves purification efficiency, but also provides reliable technical support for the environmental protection field and promotes the sustainable development of water resources.

Claims

1. A water purification device, characterized in that: The device comprises a water pool (1), a support (2), a filter drum (3), a storage drum (4), a filter layer (5), a flushing water tank (6), a first guide drum (7), and a spray device (8); the support (2) is arranged in the water pool (1); the filter drum (3) is arranged below the support (2) and located in the water pool (1); the storage drum (4) is arranged above the support (2); a water inlet (101) is arranged on the water pool (1); the surface of the filter drum (3) is provided with pores, and the interior is a hollow structure; a water outlet (301) is arranged at one axial end of the filter drum (3), and the water outlet (301) is communicated with the hollow part inside the filter drum (3); the flushing water tank (6) The washing trough (6) is arranged in the middle of the support (2) and between the storage drum (4) and the filter drum (3); the washing trough (6) is a U-shaped structure with an open upper end; the first guide roller (7) is arranged on the support (2) or the washing trough (6) and is located above one side edge of the washing trough (6); the spray device (8) is arranged above the washing trough (6); a second guide roller (601) is arranged in the washing trough (6); one end of the filter layer (5) is connected to the storage drum (4), and the other end passes through the bottom of the second guide roller (601), the top of the first guide roller (7) in sequence, and is connected to the filter drum (3); and a sewage outlet (13) is arranged on the washing trough (6).

2. The water purification device according to claim 1, characterized in that: The device further comprises a third guide roller (9); the third guide roller (9) is arranged above the other side edge of the flushing water tank (6); one end of the filter layer (5) is connected to the storage roller (4), and the other end passes through the bottom of the third guide roller (9), the bottom of the second guide roller (601), and the top of the first guide roller (7) in sequence before being connected to the filter roller (3); or The device further comprises a fourth guide roller group (10); the fourth guide roller group (10) is arranged above the other side edge of the flushing water tank (6); the fourth guide roller group (10) comprises two rollers arranged side by side; one end of the filter layer (5) is connected to the storage roller (4), and the other end passes through the gap between the two rollers in the fourth guide roller group (10), the bottom of the second guide roller (601), the top of the first guide roller (7), and then is connected to the filter roller (3).

3. The water purification device according to claim 1 or 2, characterized in that: The device further comprises a first driving mechanism (11) and a second driving mechanism (12); the first driving mechanism (11) is connected to the storage drum (4) and drives the storage drum (4) to rotate; the second driving mechanism (12) is connected to the filter drum (3) and drives the filter drum (3) to rotate; Preferably, the first driving mechanism (11) comprises a driving motor and a transmission device; the storage drum (4) is connected to the bracket via a bearing; the driving motor is connected to the storage drum (4) via the transmission device and drives the storage drum (4) to rotate, and the rotation of the storage drum (4) drives the filter layer (5) to move; the second driving mechanism (12) comprises a driving motor and a transmission device; the filter drum (3) is connected to the bracket via a bearing; the driving motor is connected to the filter drum (3) via the transmission device and drives the filter drum (3) to rotate, and the rotation of the filter drum (3) drives the filter layer (5) to move; Preferably, the transmission device comprises gears and chains, the output ends of the first driving mechanism (11) and the second driving mechanism (12) are provided with gears, and the ends of the storage drum (4) and the filter drum (3) are provided with gears; the gears on the first driving mechanism (11) are connected to the gears on the storage drum (4) via a chain; and the gears on the second driving mechanism (12) are connected to the gears on the filter drum (3).

4. The water purification device according to any one of claims 1 to 3, characterized in that: The filtering layer (5) comprises a filtering section and a traction section; one end of the filtering section is connected to one end of the traction section, the other end of the filtering section is connected to the storage drum (4), and the other end of the traction section is connected to the filtering drum (3); or The filter layer (5) comprises a filter section, a first traction section and a second traction section; the filter section is arranged between the first traction section and the second traction section, the other end of the first traction section is connected to the storage drum (4), and the other end of the second traction section is connected to the filter drum (3); or The device also includes a traction rope; one end of the filter layer (5) is connected to the storage drum (4) via the traction rope, and the other end of the filter layer (5) is connected to the filter drum (3) via the traction rope; or The device also includes a traction rope; the two ends of the traction rope are respectively connected to the filter drum (3) and the storage drum (4), and the filter layer (5) is fixed on the traction rope.

5. The water purification device according to any one of claims 1 to 4, characterized in that: Along the axial length direction of the second guide roller (601), a plurality of spray heads are provided on the spray device (8), and the water outlet direction of the spray heads is downward or sideways downward; and / or A liquid level meter is provided in the water pool (1); the system also includes a control system, which is connected to the liquid level meter, the first drive mechanism (11), the second drive mechanism (12), and the spray device (8).

6. The water purification device according to any one of claims 1 to 5, characterized in that: The filter drum (3) and / or the storage drum (4) are of cylindrical structure or square cylindrical structure; preferably, the outer diameter of the filter drum (3) is 5-500 cm; the inner diameter of the pores on the surface of the filter drum (3) is greater than 0.5 cm; and / or The first guide roller (7), the second guide roller (601), the third guide roller (9), and the fourth guide roller group (10) are independently connected to the bracket (2) via bearings; or the first guide roller (7), the second guide roller (601), the third guide roller (9), and the fourth guide roller group (10) are independently fixedly connected to the bracket (2), and movable sleeves are provided on the outer sides of the rollers of the first guide roller (7), the second guide roller (601), the third guide roller (9), and the fourth guide roller group (10).

7. The water purification device according to claim 4, characterized in that: The length of the traction section or the second traction section is not less than the distance between the filter drum (3) and the first guide drum (7); and / or The filter section on the filter layer is a filter cloth, preferably a filter cloth with fluff; the pore size of the filter cloth is less than 50 μm, preferably less than 20 μm; and / or The traction section or the second traction section is a rope or a mesh cloth, and the pore size of the mesh cloth is greater than 2 mm, preferably greater than 5 mm.

8. A water purification system, characterized in that: The system comprises n water purification devices according to any one of claims 1 to 7; the n water purification devices are connected in parallel and / or in series to form a water purification system; When the water purification devices are connected in parallel, the water inlets (101) of each water purification device are connected through a water pipe and then connected to the water inlet pipe; the water outlets (301) of each water purification device are connected through a water pipe and then connected to the water outlet pipe; When the water purification devices are connected in series, the water outlet (301) of the upper-stage water purification device is connected to the water inlet (101) of the lower-stage water purification device to form a multi-stage water purification system; Preferably, n is 2-20, preferably 3-10.

9. Use of the water purification device according to any one of claims 1 to 7 or the water purification system according to claim 8, characterized in that: using the device or system for water purification; Preferably, the device or system is used to filter suspended matter in seawater or sewage.

10. A method for purifying water using a water purification device according to any one of claims 1 to 8, the method comprising the following steps: S1, connecting the filter layer (5) between the storage drum (4) and the filter drum (3), wherein the length of the filter layer (5) is greater than the distance between the storage drum and the filter drum, and wrapping the filter layer (5) on the filter drum (3); S2, injecting raw water into the water pool (1), and the filter drum and the filter layer on the filter drum are submerged in the raw water; The raw water passes through the filter layer on the filter drum and enters the hollow part of the filter drum. The filter layer filters the raw water to obtain treated water. The treated clean water is discharged from the water outlet at the axial end of the filter drum. S3, cleaning: stop the water supply, rotate the receiving drum, the receiving drum drives the filter layer so that the filter layer wrapped on the filter drum is unfolded, and water is sprayed in the flushing tank (6) and the spray device (8) to clean the filter layer for the filter section; S4. After cleaning, the filter drum is rotated, and the filter drum drives the filter layer to wrap around the outside of the filter drum, and raw water is injected into the pool (1) to continue the water purification work.

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