Filter system

Abstract

The application discloses a filtering system, relates to the technical field of water treatment, and can be applied to an integrated pump station.The filtering system comprises a filtering water tank, a backwashing water tank, a communication pipe, a filtering membrane group, a driving piece, a fan and a blowdown structure.The filtering water tank is connected with the backwashing water tank through the communication pipe.The filtering membrane group is composed of multiple filtering membranes which are arranged at intervals and a water collecting pipe, and the water collecting pipe is communicated with the communication pipe.The backwashing water tank adopts a structure with water inlet at the bottom and water outlet at the top, the filtering water tank is provided with the blowdown structure at the bottom, and the filtering system is integrally installed on a support.In normal filtering, raw water enters the filtering water tank, is purified by the filtering membrane group and is collected into the backwashing water tank through the water collecting pipe.When the filtering membrane is blocked and the water production decreases, the system starts backwashing: the driving piece drives clean water in the backwashing water tank to flow back to wash the filtering membrane, and after backwashing is completed, sludge is discharged, and the system restores water production.The filtering system provided by the application has the advantages of compact structure, complete backwashing, difficulty in blocking, and effective improvement of filtering efficiency and operation stability.

Description

Technical Field

[0001] This application relates to the field of water treatment technology, and in particular to a filtration system. Background Technology

[0002] The filtration system of a rural single-village water plant is an infrastructure designed for the decentralized water supply needs of vast rural areas in my country. Its core function is to transform raw water from natural water sources into clean water that meets drinking water standards through physical filtration and disinfection.

[0003] Due to the dispersed terrain, low population density, and limited economic conditions in rural areas, traditional centralized water plants cannot cover all villages. Therefore, single-village water plants have become an important technical solution to the problem of safe drinking water in rural areas.

[0004] However, these filtration systems face multiple challenges in practical applications: Firstly, rural areas lack professional maintenance personnel, and the complexity of equipment operation directly affects the long-term reliability of the system. Secondly, rural land resources are scarce, and excessively large equipment footprints significantly increase construction costs and space requirements. Existing water plant filtration systems often employ a decentralized modular design, resulting in dispersed equipment layouts, lengthy pipelines, and difficult maintenance. Furthermore, if design flaws during equipment operation lead to a decline in product water quality, such as stagnant water residue or insufficient backwashing, it could jeopardize water safety.

[0005] Therefore, there is an urgent need for an integrated, intelligent filtration system technology solution that is adaptable to the complex rural environment, so as to meet the multiple requirements of efficient treatment, low maintenance costs and stable water quality. Summary of the Invention

[0006] This application provides a filtration system to overcome the shortcomings of related filtration systems, such as complex operation and maintenance, large footprint, scattered layout, long pipelines, and the tendency to generate stagnant water and insufficient backwashing leading to water quality degradation.

[0007] The filtration system provided in this application embodiment integrates a filter tank and a backwash tank into a dual-tank structure, and a drive component is installed in the backwash tank, allowing the same device to switch between filtration and cleaning states. This provides a compact, easy-to-maintain, and reliable filtration system with stable water quality.

[0008] This application provides a filtration system including a filter tank, a backwash tank, and a drive component; the first port of the filter tank is used to discharge water to be filtered, and the filter tank is used at least to filter water; the first end of the backwash tank is connected to the second port of the filter tank, and the second end of the backwash tank is used at least to discharge water filtered by the filter tank.

[0009] By integrating the filter tank and backwash tank, the equipment footprint is reduced, the pipeline layout is simplified, and the installation and construction costs are lowered. It is particularly suitable for scenarios such as rural single-village water plants with limited space.

[0010] The drive unit is located in the backwash water tank; the backwash water tank stores clean water as the backwash water source, and the drive unit directly completes the automatic cleaning of the filter water tank. No additional external water source is required, making the system structure simpler and the operation more reliable.

[0011] When the filtration system is in filtration mode, the filter tank can filter water and discharge the water through the second end of the backwash tank; when the filtration system is in cleaning mode, the drive unit can drive the water in the backwash tank to be transported into the filter tank to clean the filter tank.

[0012] The filtration system can switch between filtration and cleaning modes, eliminating the need for frequent manual operation and complex maintenance. This effectively solves the problem of a lack of professional maintenance personnel in rural areas, while ensuring the long-term stable operation of the filter membrane module.

[0013] In one possible implementation, a connecting pipe is provided between the filter water tank and the backwash water tank; the first end of the connecting pipe is connected to the second connecting port of the filter water tank, and the second end of the connecting pipe is connected to the first end of the backwash water tank.

[0014] By installing a connecting pipe between the filter water tank and the backwash water tank, a stable, closed, and directional water flow channel can be formed between the filter water tank and the backwash water tank.

[0015] In filtration mode, the water purified by the filter tank can smoothly and orderly enter the backwash tank for temporary storage through the connecting pipe, ensuring a continuous and reliable water production process. In cleaning mode, the water in the backwash tank can flow back to the filter tank in a directional manner along the connecting pipe under the action of the drive component, realizing reverse cleaning of the filter membrane module and improving backwashing efficiency and cleaning thoroughness.

[0016] The water flow path is clear and smooth, and the cleaning is thorough and complete, avoiding water quality degradation caused by the accumulation of pollutants and stagnant water, thus improving the stability of the output water quality and the safety of the water supply.

[0017] In one possible implementation, the height of the filter tank is higher than the height of the backwash tank; the drive unit is disposed on the connecting pipe; when the filtration system is in the filtration state, the drive unit is in the stopped state, and the water in the filter tank can be transferred to the tank by gravity.

[0018] No drive components are required during the filtration and water production stage. Water can be automatically transported by relying on the height difference between the filtration tank and the backwash tank, which reduces energy consumption, lowers operating costs, and improves system stability.

[0019] In one possible implementation, the driving element is disposed on the connecting pipe, and the driving element is configured as a bidirectional driving element; when the filtration system is in the filtration state, the driving element can drive the water in the filtration tank to be transported to the backwash tank to achieve stable water production.

[0020] When the filtration system is in the cleaning state, the bidirectional drive component rotates in reverse, which can pressurize the water in the backwash tank and transport it back to the filter tank to complete the reverse cleaning of the filter tank.

[0021] The system can quickly switch between filtration and cleaning modes simply by changing the direction of rotation of the bidirectional drive, making it easy to operate and reducing the professional skills required of maintenance personnel.

[0022] In one possible implementation, the water filter tank includes a tank body and a filter membrane assembly; the tank body is at least used to contain water; the filter membrane assembly is disposed within the tank body and is used to filter the water located within the tank body.

[0023] The filter membrane module is built into the tank, allowing the filtration process to be completed within a closed space. This effectively prevents external pollutants from entering the water, improving the stability and hygiene safety of the filtration process. The filter membrane module directly treats the water inside the tank, resulting in a short water flow path and sufficient contact, thus improving filtration efficiency and effluent water quality. The overall structure is compact and highly integrated, which helps reduce the system's footprint and is suitable for space-constrained applications such as rural single-village water plants.

[0024] In one possible implementation, the first end of the backwash water tank is located at the bottom of the backwash water tank, and the second end of the backwash water tank is located at the top of the backwash water tank.

[0025] By placing the first end of the backwash water tank at the bottom and the second end at the top, the filtered water flows from bottom to top and fills the backwash water tank, forming a stable flow state. This effectively eliminates dead zones and short-circuiting phenomena in the backwash water tank, prevents stagnant water from accumulating at the bottom of the backwash water tank, and improves water quality stability and effluent safety.

[0026] Meanwhile, the bottom inlet and top outlet arrangement facilitates the natural upward discharge of gas inside the tank, preventing the accumulation of air bubbles in the backwash water tank from affecting the operation of subsequent drive components and the supply of backwash water, thus ensuring a continuous and reliable water supply in both filtration and cleaning states.

[0027] The filter tank is provided with a third connection port, which is located at the top of the filter tank; when the filtration system is in the cleaning state, the third connection port is used to discharge the water in the tank.

[0028] When the filtration system is in the cleaning state, if the water level in the filter tank is too high, the excess water can overflow and be discharged through the third connection port to prevent the filter tank from overflowing and the pressure from being too high during backwashing. This avoids equipment damage or leakage due to excessive water level, improves system operation safety, and plays the role of overflow pressure relief and water level stabilization.

[0029] In one possible implementation, the filter membrane assembly includes multiple filter membranes and a water collection pipe, with the multiple filter membranes arranged sequentially at intervals. Using multiple filter membranes arranged at intervals increases the effective filtration area, thereby improving the water production and filtration efficiency per unit time. Furthermore, it facilitates the uniform flow of backwash water between the filter membranes, resulting in more thorough cleaning, reduced clogging, and extended membrane lifespan.

[0030] The water collection pipe is used to collect the water after it has been filtered by the filter membrane. The outlet of the water collection pipe is connected to the second connection port of the filter water tank. The filtered water is collected centrally through the water collection pipe, and the water flow path is clear and stable, avoiding mixing of the filtered water and the water to be filtered, thus ensuring the quality of the output water.

[0031] The water collection pipe works in conjunction with the filter membrane to collect and transport the purified water filtered by the filter membrane assembly. It has a high degree of integration, a compact structure, and is easy to install, maintain and replace, making it suitable for integrated and miniaturized filtration system layouts.

[0032] In one possible implementation, the filter tank is equipped with a fan, the outlet of which is connected to the bottom of the filter tank, and the fan is used at least to introduce clean gas into the water in the filter tank.

[0033] When the blower is working, it can continuously introduce clean gas into the water inside the filter tank, forming evenly rising bubbles. The bubbles disturb the water flow, which can not only scrub the surface of the filter membrane and enhance the backwashing effect, preventing pollutants from adhering and clogging, but also destroy the stagnant water area in the filter tank, preventing sludge deposition, and further improving filtration efficiency and the stability of the filtration system.

[0034] In one possible implementation, the filter tank is provided with a drainage structure for receiving sludge from the filter tank.

[0035] The drainage structure can collect and discharge pollutants trapped during filtration and sludge detached during backwashing, avoiding secondary pollution caused by long-term sludge deposition in the tank, reducing sludge accumulation in the tank, ensuring a clean working environment for the filter membrane module, and improving filtration efficiency and effluent water quality.

[0036] The sewage discharge structure, in conjunction with backwashing and air washing, enables sewage diversion and directional discharge, effectively reducing the probability of pipe and filter membrane blockage.

[0037] In one possible implementation, the filtration system includes a mounting bracket comprising a main body and a partition structure; the partition structure is disposed on the main body and forms multiple mounting areas with the main body, the multiple mounting areas being at least for accommodating the filter tank, the backwash tank, and the drive component.

[0038] By dividing the structure into multiple independent installation areas, components such as the filter tank, backwash tank, and drive unit can be integrated into the same mounting bracket, making the layout of each component neat and the positioning reliable, thus solving the problem of scattered layout in traditional equipment.

[0039] The centralized installation of all components effectively shortens the pipeline connection length and optimizes space utilization, making it particularly suitable for use scenarios such as rural water plants where land resources are scarce and installation space is limited.

[0040] The modular integrated support structure allows for pre-assembly in the factory, improving installation efficiency and facilitating overall transportation and rapid on-site placement. At the same time, the independently zoned layout makes it easier to inspect and replace individual components later, reducing maintenance difficulty.

[0041] All core components are fixed in place by mounting brackets, making them less prone to displacement or shaking during operation, thus improving the structural stability and operational reliability of the filtration system during long-term operation.

[0042] This application provides a filtration system including a filter tank, a backwash tank, a connecting pipe, a filter membrane assembly, a drive unit, a fan, and a drain structure. The filter tank and the backwash tank are connected via the connecting pipe. The filter membrane assembly consists of multiple spaced filter membranes and a water collection pipe, which is connected to the connecting pipe. The backwash tank has a bottom inlet and top outlet structure, and a drain structure is provided at the bottom of the filter tank. The entire system is integrated and mounted on a bracket. During normal filtration, raw water enters the filter tank, is purified by the filter membrane assembly, and then flows into the backwash tank through the water collection pipe. When the filter membrane becomes clogged and the water production decreases, the system initiates backwashing: the drive unit drives the clean water in the backwash tank to flow back and flush the filter membrane. After backwashing, sludge is discharged, and the system resumes water production. The filtration system provided by this application has a compact structure, thorough backwashing, and is not easily clogged, effectively improving filtration efficiency and operational stability. Attached Figure Description

[0043] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0044] Figure 1 Schematic diagram of the internal structure of the filtration system provided in the embodiments of this application Figure 1 ;

[0045] Figure 2 Schematic diagram of the internal structure of the filtration system provided in the embodiments of this application Figure 2 ;

[0046] Figure 3 A side view of the filtering system provided in an embodiment of this application;

[0047] Figure 4 A perspective view of the filtering system provided in an embodiment of this application.

[0048] Explanation of reference numerals in the attached figures:

[0049] 100-Filtered water tank; 101-First connecting port; 102-Second connecting port; 103-Third connecting port; 110-Filter membrane module; 111-Membrane frame; 112-Filter membrane; 120-Water collection pipe; 130-Connecting pipe; 131-Air vent valve; 132-Product water valve; 140-Maintenance hole; 150-Inlet pipe; 151-Inlet valve; 160-Product water pipe;

[0050] 200-backwash water tank;

[0051] 300-Driver;

[0052] 400 - Fan; 410 - Air duct; 411 - Air outlet;

[0053] 500 - Sewage discharge structure; 510 - Overflow pipe; 511 - Sludge discharge valve;

[0054] 600-Electrical control cabinet.

[0055] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0056] As described in the background section, related filtration systems face multiple challenges in practical applications: Firstly, rural areas lack professional operation and maintenance personnel, and the complexity of equipment operation directly affects the long-term reliability of the system. Secondly, rural land resources are scarce, and excessively large equipment footprints will significantly increase construction costs and space requirements. Furthermore, existing water plants often employ decentralized modular designs, resulting in dispersed equipment layouts, lengthy pipelines, and difficult maintenance. Additionally, if design flaws during equipment operation lead to a decline in product water quality, such as stagnant water residue or insufficient backwashing, it may jeopardize water safety.

[0057] Therefore, there is an urgent need for an integrated, intelligent filtration system technology solution that is adaptable to the complex rural environment, so as to meet the multiple requirements of efficient treatment, low maintenance costs and stable water quality.

[0058] The filtration system of this application addresses the pain points of rural water purification through a structured integrated design. It adopts a fully integrated modular structure, utilizing the main body and partition structure of the mounting bracket to uniformly house the water tank, drive components, and filter membrane modules in multiple installation areas. This avoids the traditional dispersed layout and lengthy piping of water plants, condensing the entire system into a standardized whole. This reduces the footprint and construction costs, and the compact internal piping design allows for plug-and-play operation, greatly reducing the difficulty of on-site installation and maintenance.

[0059] The filtration system provided in this application has a clear and continuous filtration, backwashing, and sewage discharge process.

[0060] During normal filtration, the water to be filtered enters the tank through the first connection port, is purified by the filter membrane module, and is collected through the collection pipe to the second connection port. Then, it enters the backwash tank through the connecting pipe by gravity or siphon, and is finally discharged from the outlet on the backwash tank, thus completing the production of purified water.

[0061] When the filter membrane module becomes clogged and the water production decreases, the system enters the backwashing process: the water production valve is closed, the drive unit is activated, and the clean water in the backwash tank is reversed back to the filter water tank through the connecting pipe to perform high-pressure backwashing on the filter membrane module, removing contaminants attached to the surface of the filter membrane. During the backwashing process, the blower can be turned on simultaneously to generate bubble agitation through bottom aeration, further shaking off sludge and impurities.

[0062] After backwashing is completed, the system enters the sludge discharge stage: the bottom sludge discharge valve is opened, and the wastewater and settled sludge generated during backwashing are collected along the sludge discharge hopper and discharged through the sludge discharge pipe; after the sludge is discharged, the sludge discharge valve is closed, the system returns to its initial state, and the normal filtration and water production process is resumed.

[0063] This application optimizes the backwash water tank piping layout, designing the tank with a low-level inlet and a high-level outlet to effectively avoid stagnant water areas and ensure sufficient water circulation. Combined with connecting pipes, a fan, and drive components, it ensures the pressure and flow rate of the backwash water tank, achieving effective cleaning of the filter tank and resolving health problems caused by stagnant water residue.

[0064] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0065] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0066] In the description of this invention, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0067] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can be a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0068] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0069] Reference Figures 1-4This application provides a filtration system, including a filter tank 100, a backwash tank 200, and a drive unit 300; the first connection port 101 of the filter tank 100 is used to discharge water to be filtered, and the filter tank 100 is used at least for filtering water.

[0070] For example, an inlet pipe 150 is provided at the first connection port 101 of the filter water tank 100. One end of the inlet pipe 150 is sealed and connected to the first connection port 101, and the other end is used to connect to the water to be filtered. An inlet valve 151 is provided on the inlet pipe 150. The inlet valve 151 is connected in series in the inlet pipe 150 to control the on / off state and flow rate of the water to be filtered, thereby realizing the start and stop control of the water intake process of the filtration system.

[0071] Optionally, the inlet valve 151 can be configured as an electric inlet valve or a manual ball valve, and this application does not limit this.

[0072] The inlet electric valve can be used in conjunction with the control system to achieve automatic opening and closing, improving the system's automation level and ease of operation; based on the level change detected by the level gauge inside the filter tank 100, the opening degree of the inlet electric valve is controlled to keep the water inlet speed consistent with the water production consumption speed.

[0073] Manual ball valves can be used for on-site commissioning or emergency situations. They are simple in structure, highly reliable, and easy to maintain. All valve structures described in this application that can realize the functions of water circuit opening and closing and flow regulation are within the scope of protection of this application, and will not be described in detail here.

[0074] The first end of the backwash water tank 200 is connected to the second connection port 102 of the filter water tank 100. The second end of the backwash water tank 200 is used to discharge water that has been filtered by the filter water tank 100.

[0075] By integrating the filter tank 100 and the backwash tank 200, the equipment footprint is reduced, the pipeline layout is simplified, and the installation and construction costs are lowered. This design is particularly suitable for scenarios such as rural single-village water plants with limited space.

[0076] The drive unit 300 is installed in the backwash water tank 200; the backwash water tank 200 stores clean water as the backwash water source, and the drive unit 300 directly completes the automatic cleaning of the filter water tank 100 without the need for an external water source. The system structure is simpler and the operation is more reliable.

[0077] When the filtration system is in filtration mode, the filter tank 100 can filter water and discharge the water through the second end of the backwash tank 200; when the filtration system is in cleaning mode, the drive unit 300 can drive the water in the backwash tank 200 to be transported into the filter tank 100 to clean the filter tank 100.

[0078] The filtration system can switch between filtration and cleaning modes, eliminating the need for frequent manual operation and complex maintenance. This effectively solves the problem of a lack of professional maintenance personnel in rural areas, while ensuring the long-term stable operation of the 110 filter membrane module.

[0079] Optionally, a maintenance hole 140 is installed on the top of the water filter tank 100. The maintenance hole 140 is connected to the inside of the water filter tank 100 and is equipped with a sealing cover. This allows staff to regularly open the sealing cover to inspect, maintain, clean, and replace the filter membrane assembly 110 and other components inside the water filter tank 100. It also facilitates the cleaning of debris and blockages inside the water filter tank 100, preventing system operation from being affected by internal component failures or blockages, improving the convenience of equipment operation and maintenance, and reducing maintenance costs.

[0080] In one possible implementation, a connecting pipe 130 is provided between the filter tank 100 and the backwash tank 200; the first end of the connecting pipe 130 is connected to the second connecting port 102 of the filter tank 100, and the second end of the connecting pipe 130 is connected to the first end of the backwash tank 200. By providing the connecting pipe 130 between the filter tank 100 and the backwash tank 200, a stable, closed, and directional water flow channel can be formed between the filter tank 100 and the backwash tank 200.

[0081] For example, an exhaust valve 131 and a water production valve 132 are provided at intervals on the connecting pipe 130. Both are sealed and connected to the inside of the connecting pipe 130 to work together to control the exhaust and water production of the pipeline.

[0082] Before the filtration system enters the filtration working state, first close the water production valve 132 to interrupt the water production process in the connecting pipe 130, and then open the air vent valve 131 to completely expel the air accumulated inside the connecting pipe 130, so as to avoid air occupying the space inside the pipe and forming air blockage, and prevent air blockage from affecting the smooth water flow, reducing water production efficiency or damaging pipeline components.

[0083] Then close the exhaust valve 131 to keep the connecting pipe 130 and the entire water circuit in a closed state, forming a stable siphon flow channel between the filter water tank 100 and the backwash water tank 200; after the siphon flow channel is established, open the product water valve 132, and the siphon effect is officially formed.

[0084] The filtered water in the filter tank 100 can flow continuously and smoothly into the backwash tank 200 under the action of siphon, which not only significantly improves the stability of water delivery and water production efficiency, but also effectively reduces driving energy consumption, reduces equipment operating costs, and ensures long-term efficient and stable operation of the filtration system.

[0085] In the cleaning state, the water in the backwash tank 200 can flow back to the filter tank 100 in a directional manner along the connecting pipe 130 under the action of the driving component 300, thereby achieving reverse cleaning of the filter membrane module 110 and improving backwashing efficiency and cleaning adequacy.

[0086] Optionally, a dosing port is provided on the connecting pipe 130, through which backwashing agents such as cleaning agents, bactericides or surfactants can be added to enhance the cleaning power of the filter membrane module 110 and improve the filtration performance of the filter membrane.

[0087] For example, the drive unit 300 can be configured as a backwash pump, which can provide stable reverse water flow pressure and flow rate to ensure sufficient and efficient backwashing of the filter membrane module 110; the drive unit 300 can also be a self-priming pump, which facilitates pipeline venting and stable establishment of reverse water flow, improving the reliability of system operation. This application does not limit the specific type of the drive unit 300.

[0088] The water flow path is clear and smooth, and the cleaning is thorough and complete, avoiding water quality degradation caused by the accumulation of pollutants and stagnant water, thus improving the stability of the output water quality and the safety of the water supply.

[0089] In one possible implementation, the height of the filter tank 100 is higher than the height of the backwash tank 200; the drive unit 300 is disposed in the connecting pipe 130; when the filtration system is in the filtration state, the drive unit 300 is in the stopped state, and the water in the filter tank 100 can be transferred to the cleaning tank by gravity.

[0090] During the filtration and water production stage, the drive component 300 does not need to operate. The water can be automatically transported by relying on the height difference between the filter water tank 100 and the backwash water tank 200, which reduces energy consumption, reduces operating costs, and improves system stability.

[0091] In another possible implementation, the drive unit 300 is disposed in the connecting pipe 130 and is configured as a bidirectional drive unit; when the filtration system is in the filtration state, the drive unit 300 can drive the water in the filtration tank 100 to be transported to the backwash tank 200 to achieve stable water production.

[0092] When the filtration system is in cleaning mode, the bidirectional drive rotates in reverse, pressurizing the water in the backwash tank 200 and sending it back to the filter tank 100, completing the reverse cleaning of the filter tank 100. The system can quickly switch between filtration and cleaning modes simply by changing the direction of rotation of the bidirectional drive, simplifying operation and reducing the professional skills required of maintenance personnel.

[0093] For example, the drive unit 300 is configured as a bidirectional diaphragm pump, which delivers water forward in the filtration state and quickly switches to reverse direction to achieve backwashing in the cleaning state, simplifying the pipeline structure and improving system integration. This application does not limit the specific type, structure, or installation method of the drive unit 300. Any power structure that can achieve the switching between forward water delivery and backwashing functions is within the protection scope of this application.

[0094] In one possible implementation, the water filter tank 100 includes a tank body and a filter membrane assembly 110; the tank body is at least used to contain water; the filter membrane assembly 110 is disposed in the tank body and is used to filter the water located in the tank body.

[0095] For example, the filter membrane assembly 110 is configured as a combination structure of membrane frame 111 and filter membrane 112. The membrane frame 111 is located at the bottom of the filter water tank 100 to support and fix the filter membrane 112, ensuring that the filter membrane 112 is stable in position and evenly stressed during filtration and backwashing, and avoiding shaking or displacement.

[0096] The filter membrane 112 is used for precision filtration of water, intercepting suspended solids, colloids, and impurities in the water to achieve solid-liquid separation and ensure the quality of the effluent. The above structure has a high degree of integration and is easy to install, which not only improves the filtration effect but also facilitates later maintenance and replacement.

[0097] The filter membrane module 110 is built into the housing, allowing the filtration process to be completed within a closed space. This effectively prevents external pollutants from entering the water, improving the stability and hygiene safety of the filtration process. The filter membrane module 110 directly treats the water inside the housing, resulting in a short water flow path and sufficient contact, thus improving filtration efficiency and effluent water quality. The overall structure is compact and highly integrated, which helps reduce the system's footprint and makes it suitable for space-constrained applications such as those in rural areas.

[0098] In one possible implementation, the first end of the backwash water tank 200 is located at the bottom of the backwash water tank 200, and the second end of the backwash water tank 200 is located at the top of the backwash water tank 200.

[0099] By setting the first end of the backwash water tank 200 at the bottom and the second end at the top, the filtered water flows from bottom to top and fills the backwash water tank 200, forming a stable flow state. This effectively eliminates dead zones and short-circuiting phenomena in the backwash water tank 200, avoids stagnant water accumulation at the bottom of the backwash water tank 200, and improves water quality stability and effluent safety.

[0100] Meanwhile, the bottom inlet and top outlet arrangement facilitates the natural upward discharge of gas from the backwash water tank 200, preventing the accumulation of air bubbles in the backwash water tank 200 from affecting the operation of the subsequent drive unit 300 and the backwash water supply, thus ensuring a continuous and reliable water supply in both filtration and cleaning states.

[0101] Optionally, a product water pipe 160 is connected to the second end of the backwash water tank 200, and the other end of the product water pipe 160 is connected to a nearby clean water tank. Preferably, a pagoda connector is provided on the product water pipe 160 for adding chemicals to disinfect the filtered clean water.

[0102] The filter tank 100 is provided with a third connection port 103, which is located at the top of the filter tank 100; when the filtration system is in the cleaning state, the third connection port 103 is used to discharge water from the tank.

[0103] For example, an overflow pipe 510 is provided in the third connection port 103, with one end of the overflow pipe 510 sealed to the third connection port 103 and the other end connected to an external sewage tank.

[0104] When the filtration system is in the cleaning state, if the water level in the filter tank 100 is too high, the excess water can overflow through the third connecting port 103 to prevent the tank from overflowing and the pressure from being too high during backwashing. This avoids equipment damage or leakage due to excessive water level, improves the safety of system operation, and plays the role of overflow pressure relief and water level stabilization.

[0105] In one possible implementation, the filter membrane assembly 110 includes multiple filter membranes 112 and a water collection pipe 120, with the multiple filter membranes 112 arranged sequentially at intervals. Using multiple filter membranes 112 arranged at intervals increases the effective filtration area, improving water production and filtration efficiency per unit time. Furthermore, it facilitates the uniform flow of backwash water between the filter membranes 112, resulting in more thorough cleaning, reduced clogging, and extended service life of the filter membranes 112.

[0106] like Figure 1 As shown, the water collection pipe 120 is fixedly installed on the top of the filter water tank 100. The water inlet end of the water collection pipe 120 is connected to the clean water outlet of each filter membrane 112. The water collection pipe 120 is used to obtain the water after it has been filtered by the filter membrane 112.

[0107] The outlet of the water collection pipe 120 is connected to the second connection port 102 of the filter water tank 100. The filtered water is collected centrally through the water collection pipe 120. The water flow path is clear and stable, avoiding mixing of the purified water and the water to be filtered, and ensuring the quality of the output water.

[0108] The water collection pipe 120 works in conjunction with the filter membrane 112 to collect and transport the pure water filtered by the filter membrane module 110. It has a high degree of integration, a compact structure, and is easy to install, maintain and replace, and is suitable for integrated and miniaturized filtration system layouts.

[0109] In one possible implementation, for example, a fan 400 is disposed on the outer side of the bottom of the filter water tank 100, and the air outlet of the fan 400 is connected to an air duct 410, with the air outlet 411 of the air duct 410 being sealed and connected to the bottom of the filter water tank 100.

[0110] On the one hand, the blower 400 blows air upward from the bottom of the filter tank 100, forming a large number of bubbles that rise and disturb in the water. This, combined with the reverse water flow, performs air and water combined cleaning on the filter membrane assembly 110, which can more efficiently remove pollutants attached to the filter membrane 112, significantly improve the thoroughness of cleaning, and prevent the filter membrane 112 from clogging.

[0111] On the other hand, gas disturbance can break the stillness of the water, avoid dead water areas in the tank, and reduce the deposition of impurities at the bottom of the filter tank 100, further ensuring the stability of the output water quality.

[0112] In addition, the blower 400 is directly arranged outside the filter water tank 100 and connected to the bottom of the filter water tank 100. The whole system does not require complicated piping and control logic, has stable operation, low failure rate, and is suitable for use scenarios with limited operation and maintenance conditions.

[0113] In one possible implementation, the filter tank 100 is provided with a sewage discharge structure 500. Optionally, the sewage discharge structure 500 is a sludge discharge hopper structure that is larger at the top and smaller at the bottom, with a sewage discharge pipe connected to the bottom, installed at the bottom of the filter tank 100, and directly connected to the inside of the filter tank 100.

[0114] During filtration and backwashing, sludge, suspended solids, and other pollutants detached from the tank settle to the bottom under gravity and are collected in the drain structure 500. This effectively prevents pollutants from depositing and caking at the bottom of the filter tank 100, thus avoiding secondary pollution. This ensures the cleanliness of the filter tank 100 and improves the long-term stability of the system and the quality of the effluent. Optionally, the overflow pipe 510 is connected to an external wastewater tank via the drain structure 500.

[0115] After the system has been running for a long time, the water production will decrease significantly. The main reason is that a large amount of impurities and sludge from the raw water adhere to the surface of the filter membrane 112, which clogs the membrane pores of the filter membrane 112 and prevents water from entering the filter membrane 112 to complete the filtration.

[0116] At this point, the backwashing process needs to be started: First, close the water production valve 132 to interrupt the water production process; at the same time, turn on the backwashing drive unit 300 to transport the clean water in the backwash water tank 200 to the inside of the filter membrane module 110 through the connecting pipe 130, and backwash the surface of the filter membrane module 110 to remove the attached pollutants.

[0117] During backwashing, the blower 400 is simultaneously activated, and clean gas is sent to the bottom of the filter tank 100 via the blower 400, generating a large number of uniformly rising bubbles in the water. The bubbles rise and burst on the surface of the filter membrane module 110, creating disturbances that cause the filter membrane 112 to vibrate slightly. This allows the contaminants attached to the surface of the filter membrane 112 to be fully detached and settled to the bottom of the tank, where they are then discharged through the drain structure 500, thereby restoring the permeability and water production efficiency of the filter membrane module 110.

[0118] For example, a sludge discharge valve 511 is installed at the bottom of the sewage discharge structure 500. After the backwashing process is completed, the sludge discharge valve 511 is opened, and the wastewater generated during backwashing and the sludge settled in the sewage discharge structure 500 are discharged in a concentrated manner along the sewage discharge pipe under the action of gravity. After the sludge is discharged, the sludge discharge valve 511 is closed, so that the entire system returns to the initial filtration state and resumes normal water production operation.

[0119] In one possible implementation, the filtration system includes a mounting bracket, which comprises a body and a partition structure.

[0120] For example, a partition structure is set in the main body, and the partition structure and the main body enclose multiple independent and regular installation areas. The multiple installation areas are used to install and fix the filter water tank 100, the backwash water tank 200, the drive component 300 and auxiliary components, respectively. This achieves integrated assembly of various components.

[0121] Optionally, the control system consists of an electrical control cabinet 600 and multiple sensors, providing the control foundation for the operation of the entire system. The electrical control cabinet 600 adopts an integrated design, effectively reducing the difficulty of on-site wiring, and the wiring of all equipment can be completed before leaving the factory.

[0122] Please refer to Figure 4 In this embodiment, the filter tank 100 is centrally located, and the sewage discharge structure 500 is installed at the bottom of the filter tank 100 and connected to the bottom of the filter tank 100 to facilitate the direct collection and discharge of deposited sludge. In front of the sewage discharge structure 500, the electrical control cabinet 600 and the backwash tank 200 are arranged in sequence along the horizontal direction. Each component is installed in the corresponding area of ​​the mounting bracket and separated by a partition structure.

[0123] Each component is integrated and positioned by mounting brackets, with compact positions and short pipeline connection distances, effectively reducing the overall system footprint, simplifying external pipeline layout, reducing pipeline losses and installation difficulty, while facilitating centralized operation, maintenance and repair, and greatly improving the integration, space utilization and on-site applicability of the filtration system.

[0124] By dividing the structure into multiple independent installation areas, components such as the filter water tank 100, backwash water tank 200, electrical control cabinet 600, and drive unit 300 can be integrated into the same mounting bracket, making the layout of each component neat and the positioning reliable, thus solving the problem of scattered layout in traditional equipment.

[0125] The centralized installation of all components effectively shortens the pipeline connection length and optimizes space utilization, making it particularly suitable for use scenarios such as rural water plants where land resources are scarce and installation space is limited.

[0126] The modular integrated support structure allows for pre-assembly in the factory, improving installation efficiency and facilitating overall transportation and rapid on-site placement. At the same time, the independently zoned layout makes it easier to inspect and replace individual components later, reducing maintenance difficulty.

[0127] All core components are fixed in place by mounting brackets, making them less prone to displacement or shaking during operation, thus improving the structural stability and operational reliability of the filtration system during long-term operation.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A filtration system, characterized in that, Includes a filter water tank (100), a backwash water tank (200), and a drive unit (300); The first connection port (101) of the filter tank (100) is used to discharge water to be filtered, and the filter tank (100) is used at least for filtering water. The first end of the backwash water tank (200) is connected to the second communication port (102) of the filter water tank (100), and the second end of the backwash water tank (200) is used at least to discharge the water filtered by the filter water tank (100); The drive unit (300) is disposed in the backwash water tank (200); When the filtration system is in filtration mode, the filter tank (100) can filter water and discharge the water through the second end of the backwash tank (200). When the filtration system is in the cleaning state, the drive unit (300) can drive the water in the backwash water tank (200) to be transported into the filter water tank (100) to clean the filter water tank (100).

2. The filtration system according to claim 1, characterized in that, A connecting pipe (130) is provided between the filter water tank (100) and the backwash water tank (200); The first end of the connecting pipe (130) is connected to the second connecting port (102) of the filter water tank (100), and the second end of the connecting pipe (130) is connected to the first end of the backwash water tank (200).

3. The filtration system according to claim 2, characterized in that, The height of the filter water tank (100) is higher than the height of the backwash water tank (200); The drive unit (300) is disposed on the connecting pipe (130); when the filtration system is in the filtration state, the drive unit (300) is in the stop state, and the water in the filtration tank (100) can be transferred to the backwash tank (200) by gravity.

4. The filtration system according to claim 2, characterized in that, The driving element (300) is disposed on the connecting pipe (130), and the driving element (300) is configured as a bidirectional driving element (300); When the filtration system is in filtration mode, the drive unit (300) can drive the water in the filter water tank (100) to be transported to the backwash water tank (200).

5. The filtration system according to any one of claims 1-4, characterized in that, The water filtration tank (100) includes a tank body and a filter membrane assembly (110); The tank is used to contain water; the filter membrane assembly (110) is disposed in the tank and is used to filter the water located in the tank.

6. The filtration system according to claim 5, characterized in that, The first end of the backwash water tank (200) is located at the bottom of the backwash water tank (200), and the second end of the backwash water tank (200) is located at the top of the backwash water tank (200); The filter tank (100) is provided with a third connection port (103), which is located at the top of the filter tank (100). When the filtration system is in the cleaning state, the third connection port (103) is used to discharge the water in the tank.

7. The filtration system according to claim 5, characterized in that, The filter membrane assembly (110) includes a plurality of filter membranes (112) and a water collection pipe (120), wherein the plurality of filter membranes (112) are arranged sequentially at intervals; The water collection pipe (120) is used to obtain water that has been filtered by the filter membrane (112), and the outlet end of the water collection pipe (120) is connected to the second communication port (102) of the filter water tank (100).

8. The filtration system according to claim 5, characterized in that, The filter tank (100) is equipped with a fan (400), the air outlet (411) of the fan (400) is connected to the bottom of the filter tank (100), and the fan (400) is used at least to input clean gas into the water body of the filter tank (100).

9. The filtration system according to claim 5, characterized in that, The filter tank (100) is provided with a sewage discharge structure (500) for receiving sludge from the filter tank (100).

10. The filtration system according to claim 1, characterized in that, The filtration system includes a mounting bracket, which includes a main body and a partition structure; The partition structure is disposed on the main body, and the partition structure and the main body form multiple installation areas, the multiple installation areas being used to accommodate at least the filter water tank (100), the backwash water tank (200) and the drive component (300).

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