Ultrafiltration and reverse osmosis staged water treatment device

Abstract

The utility model belongs to water treatment device technical field especially is a kind of ultrafiltration reverse osmosis grading water treatment device, including filtration system, two groups of filtration system are including an ultrafiltration filter core module and an reverse osmosis filter core module;Flow divider valve is set on the water inlet pipeline of filtration system;Water tank is connected with two filtration systems respectively through drain pipe;Backwash pipeline includes flushing pipe and blow-off pipe;Backwash control valve is set on flushing pipe, is used to control the opening and closing of backwash process;Detection and control system are used to detect the blockage of filtration system, and according to the detection result control flow divider valve and backwash control valve action, when one group of filtration system is blocked, detection and control system control flow divider valve switches water flow to enter another group of filtration system, backwash control valve is opened simultaneously, backwash is carried out to the filtration system of blockage, effectively avoid the water treatment interruption caused by filter core blockage, improve the efficiency of water treatment.

Description

Technical Field

[0001] This utility model belongs to the technical field of water treatment devices, specifically relating to an ultrafiltration reverse osmosis staged water treatment device. Background Technology

[0002] With rapid industrial development and continuous population growth, water scarcity and water pollution problems are becoming increasingly serious. People have higher and higher requirements for drinking water quality, hoping not only to remove large particulate impurities such as silt and rust, but also to effectively remove harmful substances such as bacteria, viruses, heavy metal ions, and organic matter to protect their health. Therefore, efficient and reliable water treatment technologies have become key to solving water resource problems.

[0003] Currently, there are many types of water treatment devices on the market, among which ultrafiltration and reverse osmosis technologies are widely used due to their excellent filtration performance. Ultrafiltration technology utilizes the microporous structure of ultrafiltration membranes to effectively remove suspended solids, colloids, bacteria, and other large molecules from the water, thus achieving preliminary water purification. Reverse osmosis technology, on the other hand, relies on the high-precision filtration capability of reverse osmosis membranes to further remove dissolved salts, organic matter, heavy metal ions, and other minute impurities from the water, producing high-purity purified water.

[0004] However, existing ultrafiltration and reverse osmosis water treatment devices still have some shortcomings in practical applications. On the one hand, most devices use a single filtration system. When the filter element becomes clogged, the entire water treatment process will be forced to stop, requiring manual shutdown for filter cleaning or replacement. This not only affects the continuity and stability of water treatment but also increases manual maintenance costs and downtime, failing to meet users' needs for uninterrupted water supply.

[0005] On the other hand, existing water treatment devices are often not accurate or timely enough in detecting filter clogging. Some devices rely solely on simple timed cleaning to maintain the filter, failing to make flexible adjustments based on the actual clogging status. This results in either untimely cleaning, leading to severe clogging and reduced filtration efficiency, or excessive cleaning, causing waste of water and energy. Utility Model Content

[0006] To address the above problems, the purpose of this utility model is to provide an ultrafiltration reverse osmosis staged water treatment device to solve the problems mentioned in the background art.

[0007] This utility model provides an ultrafiltration and reverse osmosis staged water treatment device, including a filtration system configured in two groups, each group comprising an ultrafiltration filter module and a reverse osmosis filter module; a diversion valve, installed on the inlet pipe of the filtration system, for controlling the water flow into one group of filtration systems; a water tank, connected to each of the two filtration systems via drain pipes, for storing treated water; a flushing pipe, including a flushing pipe and a drain pipe, the flushing pipe connecting the water tank and each filtration system for backwashing clogged filtration systems; the drain pipe discharging backwash wastewater from each filtration system; a backwash control valve, installed on the flushing pipe, for controlling the opening and closing of the backwashing process; and a detection and control system for detecting the clogging status of the filtration systems and controlling the operation of the diversion valve and the backwash control valve based on the detection results. When one group of filtration systems is clogged, the detection and control system controls the diversion valve to switch the water flow to the other group of filtration systems and simultaneously controls the backwash control valve to open, backwashing the clogged filtration system.

[0008] Preferably, the detection and control system includes pressure sensors respectively installed at the inlet and outlet ends of the two sets of filtration systems to detect the water pressure at the inlet and outlet ends; and a controller electrically connected to the pressure sensors, the diversion valve, and the backwash control valve. The controller receives the water pressure signal detected by the pressure sensors. When the water pressure difference between the inlet and outlet ends of the same set of filtration systems reaches a preset threshold, it determines that the set of filtration systems is blocked and sends a control signal to control the diversion valve to switch the water flow to another set of filtration systems, while simultaneously controlling the backwash control valve to open for backwashing.

[0009] Preferably, the ultrafiltration filter module includes an ultrafiltration filter element and an ultrafiltration filter element housing. The ultrafiltration filter element is disposed inside the ultrafiltration filter element housing. The ultrafiltration filter element housing is provided with an inlet and an outlet. The inlet is connected to the inlet pipe. One side of the pipe at the outlet is connected to the inlet end of the reverse osmosis filter module, and the other side is connected to the flushing pipe.

[0010] Preferably, the reverse osmosis filter module includes a reverse osmosis filter element and a reverse osmosis filter element housing. The reverse osmosis filter element is disposed inside the reverse osmosis filter element housing. The reverse osmosis filter element housing is provided with an inlet and an outlet. The inlet is connected to the inlet pipe, and one side of the pipe at the outlet is connected to the water tank, and the other side is connected to the flushing pipe.

[0011] Preferably, the flushing pipe is also equipped with a backwash pump, which is electrically connected to the detection and control system. The controller controls the operating parameters of the backwash pump based on the pressure data detected by the pressure sensor.

[0012] Preferably, the sewage pipe is connected to the water inlet pipe through a return pipe. A return valve is installed on the return pipe, and a water quality sensor and a return pump are provided on the sewage pipe. When the water quality sensor detects that the TDS value of the sewage is lower than a preset threshold, the controller controls the return valve and the return pump to open so that the sewage is returned to the water inlet pipe for further treatment.

[0013] Preferably, the controller further includes a timing module, which is used to set the backwashing cycle. When the preset cycle is reached and no blockage of the filtration system is detected, the controller controls the diversion valve to switch the water flow to another set of filtration systems, and at the same time controls the backwashing control valve to open, so as to perform periodic backwashing on the filtration systems that are not currently performing filtration work.

[0014] The beneficial effects of this invention are as follows: This ultrafiltration and reverse osmosis staged water treatment device is equipped with two sets of filtration systems, each containing an ultrafiltration filter module and a reverse osmosis filter module. Water flow is controlled to enter one set of filtration systems via a diversion valve, achieving continuity and stability in water treatment. When one set of filtration systems becomes clogged, the detection and control system can promptly control the diversion valve to switch the water flow to the other set of filtration systems and activate the backwash control valve to backwash the clogged system. This effectively avoids water treatment interruptions caused by filter blockage, improves the overall operating efficiency and reliability of the device, ensures uninterrupted water treatment, and enhances water treatment efficiency.

[0015] By installing pressure sensors at the inlet and outlet of each of the two filtration systems, the water pressure at both ends can be accurately detected. The controller receives the water pressure signals detected by the pressure sensors. When the water pressure difference between the inlet and outlet of the same filtration system reaches a preset threshold, it determines that the filtration system is clogged and automatically controls the diversion valve to switch the water flow and opens the backwash control valve for backwashing. This automatic control method based on pressure difference detection can quickly and accurately determine the clogging status of the filtration system and take corresponding measures in a timely manner, improving the intelligence and automation level of the device, reducing manual intervention, and lowering maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the first side cross-sectional structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the second side cross-sectional structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the first three-dimensional structure of the present invention with the outer shell removed;

[0020] Figure 5 This is a schematic diagram of the second three-dimensional structure of the present invention with the outer shell removed.

[0021] In the diagram: 1. Filtration system; 2. Ultrafiltration filter module; 3. Reverse osmosis filter module; 4. Diverter valve; 5. Inlet pipe; 6. Water tank; 7. Drain pipe; 8. Flushing pipe; 9. Sewage pipe; 10. Backwash control valve; 11. Pressure sensor; 12. Controller; 13. Ultrafiltration filter; 14. Ultrafiltration filter housing; 15. Reverse osmosis filter; 16. Reverse osmosis filter housing; 17. Backwash pump; 18. Return pipe; 19. Water quality sensor; 20. Return pump. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0023] In order to solve the technical problems mentioned in the background art, such as Figure 1-5 As shown, this utility model provides an ultrafiltration and reverse osmosis staged water treatment device. Unlike existing technologies, this solution incorporates two filtration systems 1, each including an ultrafiltration filter module 2 and a reverse osmosis filter module 3. A diversion valve 4 is installed on the inlet pipe 5 of each filtration system 1 to control the water flow into one of the filtration systems 1. The filtered water flows along the drain pipe 7 into a water tank 6 for storage. When a filtration system 1 becomes clogged, backwashing is performed through a flushing pipe, which includes a flushing pipe 8 and a drain pipe 9. The flushing pipe 8 connects the water tank 6 to each filtration system 1. A backwashing control valve 10 is also installed on the flushing pipe 8 to control the opening and closing of the backwashing process. Furthermore, the timing of backwashing is determined by a detection and control system capable of detecting the filtration system 1. In the event of blockage, the system controls the operation of the diversion valve 4 and the backwash control valve 10 based on the detection results. Specifically, the system includes a pressure sensor 11 and a controller 12, respectively installed at the inlet and outlet ends of the two filtration systems 1 to detect water pressure at these ends. The controller 12 is electrically connected to the pressure sensor 11, the diversion valve 4, and the backwash control valve 10. The controller 12 receives the water pressure signal detected by the pressure sensor 11. When the water pressure difference between the inlet and outlet ends of the same filtration system 1 reaches a preset threshold, it determines that the filtration system 1 is blocked and sends a control signal to control the diversion valve 4 to switch the water flow to the other filtration system 1. Simultaneously, it controls the backwash control valve 10 to open for backwashing. The drain pipe 9 is used to discharge the backwash wastewater from each filtration system 1. Furthermore, a backwash pump 17 is installed on the flushing pipe 8. Figure 5As shown, the backwash pump 17 is located at one end near the water tank 6 and is electrically connected to the controller 12. The controller 12 controls the operating parameters of the backwash pump 17 based on the pressure data detected by the pressure sensor 11. The operating parameters include the speed, flow rate and pressure of the backwash pump 17. When the filter system 1 is detected to be severely clogged, the controller 12 automatically increases the speed and pressure of the backwash pump 17 to enhance the backwashing effect. Wastewater generated by the backwash filter cartridge is discharged through the drain pipe 9, which is connected to the inlet pipe 5 via the return pipe 18. The return pipe 18 is equipped with a return valve, a water quality sensor 19, and a return pump 20. When the water quality sensor 19 detects that the TDS value of the wastewater is lower than a preset threshold, the controller 12 controls the return valve and return pump 20 to open, returning the wastewater to the inlet pipe 5 for further treatment. This design achieves rational utilization of backwash wastewater. When the wastewater quality is good, it is returned for further treatment, reducing water waste, improving water utilization efficiency, meeting environmental protection and energy-saving requirements, and reducing the operating cost of the device. Furthermore, to improve the quality and stability of water treatment, the controller 12 also includes a timing module for setting the backwash cycle. When the preset cycle is reached and no blockage is detected in the filtration system 1, the controller 12 controls the diversion valve 4 to switch the water flow to another filtration system 1, and simultaneously controls the backwash control valve 10 to open, periodically backwashing the filtration system 1 that is not currently performing filtration. This regular backwashing mechanism prevents filter cartridge clogging, maintains good filtration performance, and extends the filter cartridge's lifespan. Even without obvious signs of clogging, regular backwashing promptly removes impurities and contaminants from the filter cartridge surface, ensuring the device always operates at high efficiency.

[0024] like Figure 3-4As shown, the ultrafiltration filter module 2 includes an ultrafiltration filter element 13 and an ultrafiltration filter element housing 14. The ultrafiltration filter element 13 is disposed inside the ultrafiltration filter element housing 14 and is made of high-performance ultrafiltration membrane material, which can effectively remove suspended solids, colloids, bacteria and other impurities from the water. The ultrafiltration filter element housing 14 is made of high-strength and corrosion-resistant material to protect the ultrafiltration filter element 13. The ultrafiltration filter element housing 14 is provided with an inlet and an outlet. The inlet is connected to the inlet pipe 5, and the pipe side at the outlet is connected to the reverse osmosis filter element. The inlet end of module 3 is connected to the flushing pipe, and the other end is connected to the flushing pipe (when the ultrafiltration filter element 13 filters water, water enters the ultrafiltration filter element 13 from the inlet pipe 5 along the inlet of the ultrafiltration filter element housing 14; when backwashing the ultrafiltration filter element 13, water enters the ultrafiltration filter element 13 from the flushing pipe along the outlet to backwash it); the reverse osmosis filter module 3 includes a reverse osmosis filter element 15 and a reverse osmosis filter element housing 16. The reverse osmosis filter element 15 is installed inside the reverse osmosis filter element housing 16 and uses high-quality reverse osmosis membrane material. Made of high-purity materials, the reverse osmosis filter cartridge 15 can further remove dissolved salts, organic matter, heavy metal ions and other minute impurities from the water to produce high-purity pure water. The reverse osmosis filter cartridge housing 16 is made of high-pressure resistant and corrosion-resistant materials to ensure stable operation of the reverse osmosis filter cartridge 15 under high-pressure environment. The reverse osmosis filter cartridge housing 16 is equipped with an inlet and a pure water outlet. The inlet is connected to the outlet of the ultrafiltration filter cartridge module 2. One side of the pipe at the pure water outlet is connected to the water tank 6, and the other side is connected to the flushing pipe (when the reverse osmosis filter cartridge 15 filters water, water enters the ultrafiltration filter cartridge 13 from the inlet pipe 5 along the inlet of the ultrafiltration filter cartridge housing 14. When backwashing the reverse osmosis filter cartridge 15, water enters the reverse osmosis filter cartridge 15 from the flushing pipe along the outlet for backwashing). This design allows the ultrafiltration filter cartridge module 2 and the reverse osmosis filter cartridge module 3 to not only perform normal water filtration, but also receive backwash water for cleaning when clogged, extending the service life of the ultrafiltration filter cartridge 13, reducing the frequency of filter cartridge replacement and reducing the cost of use.

[0025] To facilitate users' understanding of the real-time status of the treatment device, a display screen is installed on the outside of the device's casing. This display screen is connected to the controller 12 and is used to display the current status of the treatment device in real time, such as water production, backwashing, standby, etc. It can also display the water pressure difference between the inlet and outlet of each filtration system 1, and the water level in the water tank 6 (e.g., water production, backwashing, standby). Figure 3As shown, the water level is determined by the water level monitor installed on the top of the water tank 6 (this water level monitor is existing technology and will not be described in detail here) and the backwashing progress, such as the filter system 1 being flushed and the estimated remaining backwashing time. In order to facilitate user operation and use, the display screen is designed with a simple and easy-to-understand operating interface. Users can use the touch screen or buttons to query the historical operating data of the equipment, set system parameters, etc. At the same time, the display screen will also prompt the user in a prominent manner when a fault or abnormal situation occurs, and display the corresponding fault code and solution suggestions.

[0026] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of this utility model. The above examples are merely to aid in understanding the method and core ideas of this utility model. The above descriptions are only preferred embodiments of this utility model. It should be pointed out that, due to the limitations of written expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or variations can be made without departing from the principles of this utility model, and the above technical features can be combined in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this utility model.

Claims

1. A staged water treatment device for ultrafiltration and reverse osmosis, characterized in that, include: The filtration system (1) is configured in two groups, each group of which includes an ultrafiltration filter module (2) and a reverse osmosis filter module (3). A diversion valve (4) is installed on the inlet pipe (5) of the filtration system (1) to control the flow of water into one of the filtration systems (1). The water tank (6), connected to the two filtration systems (1) via drain pipes (7), is used to store treated water; The flushing pipe includes a flushing pipe (8) and a drain pipe (9). The flushing pipe (8) is used to connect the water tank (6) and each filter system (1) for backwashing the clogged filter system (1). The drain pipe (9) is used to discharge the wastewater from the backwashing of each filter system (1). A backwash control valve (10) is provided on the flushing pipe (8) for controlling the opening and closing of the backwashing process; The detection and control system is used to detect the blockage of the filtration system (1) and control the operation of the diversion valve (4) and the backwash control valve (10) according to the detection results. When one of the filtration systems (1) is blocked, the detection and control system controls the diversion valve (4) to switch the water flow to another filtration system (1) and controls the backwash control valve (10) to open to backwash the blocked filtration system (1). The detection and control system includes: Pressure sensors (11) are respectively installed at the inlet and outlet of the two sets of filtration systems (1) to detect the water pressure at the inlet and outlet. The controller (12) is electrically connected to the pressure sensor (11), the diversion valve (4) and the backwash control valve (10). The controller (12) receives the water pressure signal detected by the pressure sensor (11). When the water pressure difference between the inlet and outlet of the same group of filtration systems (1) reaches a preset threshold, it determines that the group of filtration systems (1) is blocked and sends a control signal to control the diversion valve (4) to switch the water flow into another group of filtration systems (1). At the same time, it controls the backwash control valve (10) to open for backwashing.

2. The ultrafiltration reverse osmosis staged water treatment device according to claim 1, characterized in that: The ultrafiltration filter module (2) includes an ultrafiltration filter element (13) and an ultrafiltration filter element housing (14). The ultrafiltration filter element (13) is disposed inside the ultrafiltration filter element housing (14). The ultrafiltration filter element housing (14) is provided with an inlet and an outlet. The inlet is connected to the inlet pipe (5). One side of the pipe at the outlet is connected to the inlet end of the reverse osmosis filter module (3), and the other side is connected to the flushing pipe.

3. The ultrafiltration reverse osmosis staged water treatment device according to claim 1, characterized in that: The reverse osmosis filter module (3) includes a reverse osmosis filter element (15) and a reverse osmosis filter element housing (16). The reverse osmosis filter element (15) is disposed inside the reverse osmosis filter element housing (16). The reverse osmosis filter element housing (16) is provided with an inlet and an outlet. The inlet is connected to the inlet pipe (5). One side of the pipe at the outlet is connected to the water tank (6), and the other side is connected to the flushing pipe.

4. The ultrafiltration reverse osmosis staged water treatment device according to claim 1, characterized in that: The flushing pipe (8) is also equipped with a backwash pump (17), which is electrically connected to the detection and control system. The controller (12) controls the operating parameters of the backwash pump (17) based on the pressure data detected by the pressure sensor (11).

5. The ultrafiltration reverse osmosis staged water treatment device according to claim 1, characterized in that: The sewage pipe (9) is connected to the water inlet pipe (5) through the return pipe (18). The return pipe (18) is equipped with a return valve, and the sewage pipe (9) is equipped with a water quality sensor (19) and a return pump (20). When the water quality sensor (19) detects that the TDS value of the sewage is lower than the preset threshold, the controller (12) controls the return valve and the return pump (20) to open so that the sewage is returned to the water inlet pipe (5) for reprocessing.

6. The ultrafiltration reverse osmosis staged water treatment device according to claim 1, characterized in that: The controller (12) is also provided with a timing module. The timing module is used to set the backwashing cycle. When the preset cycle is reached and no blockage is detected in the filtration system (1), the controller (12) controls the diversion valve (4) to switch the water flow into another set of filtration systems (1), and at the same time controls the backwashing control valve (10) to open, so as to perform periodic backwashing on the filtration system (1) that is not currently performing filtration work.

Images