Multifunctional intelligent control water quality treatment equipment

Abstract

The application discloses a multifunctional intelligent control water quality treatment equipment, and belongs to the technical field of industrial circulating water treatment. The equipment comprises a main water conveying pipeline, a filtering water conveying pipeline, a dosing water conveying pipeline and a controller. The main water conveying pipeline is provided with a water pump, a main path electric valve and a manual regulating valve. The filtering water conveying pipeline is connected with the main water conveying pipeline in parallel, and is provided with a filtering electric valve and an external pressure type ultrafiltration device. The dosing water conveying pipeline is connected with the main water conveying pipeline in parallel, and is provided with a dosing device. The controller is electrically connected with the electric valves and the water pump. The dosing device adopts a solid particle medicament filter core structure, and the medicament is slowly dissolved when water flows. The equipment is further integrated with conductivity, PH and turbidity sensors and a differential pressure switch, supports automatic backwashing, air washing and chemical cleaning functions, and is provided with a remote cloud control module. The application realizes automatic treatment of filtering first and then dosing, avoids blockage of the dosing device, and improves filtering precision and medicament dosing stability.

Description

Technical Field

[0001] This invention belongs to the field of industrial circulating water treatment technology, and in particular relates to a multifunctional intelligent control water quality treatment device. Background Technology

[0002] Circulating water systems are core public systems used in factory production and residential life. They maintain stable water quality through water treatment processes such as adding water treatment chemicals, water quality control, wastewater discharge management, and side-stream filtration purification. Existing circulating water treatment technologies mainly include makeup water treatment, circulating water filtration, chemical dosing, and wastewater discharge management.

[0003] Existing technologies have many shortcomings:

[0004] 1. Water replenishment treatment: Water softeners are used to remove calcium and magnesium ions from the replenishment water, but this requires frequent resin regeneration and maintenance, consumes a large amount of industrial salt, and has high operating costs; it also cannot solve problems such as bacterial growth, metal corrosion, and suspended solids; the high-chloride wastewater discharged during the regeneration process of water softeners can also cause irreversible ecological and environmental damage.

[0005] 2. Filtration process: Metal mesh filters, PP melt-blown filter cartridges, etc. are used, with a filtration accuracy of ≥1 micron, which cannot effectively remove bacteria and rust; while industrial ultrafiltration membranes / reverse osmosis membranes have high precision, but they are mostly internal pressure type, which are prone to clogging, require pre-filtration, and have high investment and operation and maintenance costs, making them difficult to promote.

[0006] 3. Chemical dosing process: The use of liquid scale inhibitors and corrosion inhibitors requires frequent manual handling and dosing, which is cumbersome and has poor stability; bactericides and algaecides are mostly oxidizing agents, which pose occupational health risks, and require a large amount of drainage to replace them after use, resulting in waste of water resources and chemicals.

[0007] 4. Implementation mode: The decentralized implementation mode is adopted, which requires contacting multiple manufacturers. The technical coordination is difficult and the labor cost is high. If any link is out of control, the effect of the entire water treatment equipment will be out of control. Summary of the Invention

[0008] In view of the problems existing in the prior art, the purpose of this invention is to provide a multifunctional intelligent control water treatment device.

[0009] To solve the above problems, the present invention adopts the following technical solution:

[0010] A multifunctional intelligent control water treatment device includes a main water supply pipeline, a filter water supply pipeline, a chemical dosing water supply pipeline, and a controller. The main water supply pipeline is connected at both ends to a circulating water pipeline requiring water treatment. A water pump, a main line electric valve, and a manual regulating valve are connected in series on the main water supply pipeline from its inlet to its outlet. The filter water supply pipeline is connected in parallel with the main water supply pipeline, with its inlet and outlet connected to the main water supply pipeline upstream and downstream of the main line electric valve, respectively. A filter electric valve and an external pressure ultrafiltration device are connected in series on the filter water supply pipeline from its inlet to its outlet. The chemical dosing water supply pipeline is connected in parallel with the main water supply pipeline, with its inlet and outlet connected to the main water supply pipeline upstream and downstream of the manual regulating valve, respectively. A chemical dosing device is installed on the chemical dosing water supply pipeline. The controller is electrically connected to the water pump, the main line electric valve, and the filter electric valve.

[0011] In the above structure, during normal operation, the controller keeps the main electric valve normally closed and the filter electric valve normally open. After the water pump starts, all circulating water enters the filter supply pipeline and is filtered by the external pressure ultrafiltration device to remove suspended solids, bacteria, rust, and other impurities from the water. The filtered clean water flows to the manual regulating valve, which is used to adjust the circulating water volume through the dosing supply pipeline: a portion of the clean water enters the dosing supply pipeline, flows through the dosing device, and comes into contact with the solid chemicals to dissolve the active ingredients, thus dosing the circulating water; the remaining clean water flows directly downstream of the main supply pipeline. Finally, all treated water returns to the circulation system, realizing the sequence of filtration before dosing, ensuring that the water entering the dosing device is clean water, and preventing impurities from clogging the gaps between solid chemical particles.

[0012] Furthermore, the dosing device includes a lower shell, an upper shell, a filter element, and a water inlet pipe. Both the lower and upper shells are cylindrical semi-enclosed bodies. The lower shell has an opening at the top, and the upper shell has an opening at the bottom. When the openings of the lower and upper shells are interlocked, they form a closed cylinder. The water inlet pipe extends through and connects to the bottom of the lower shell. The lower end of the water inlet pipe extends beyond the bottom of the lower shell and connects to the upstream water supply pipeline of the dosing device. The upper end of the water inlet pipe extends vertically upward inside the lower shell, and the outer wall of the water inlet pipe... The filter element is provided with an external thread at one end. A water outlet pipe is connected to the bottom of the side wall of the lower housing. The water outlet pipe is connected to the downstream water supply pipeline of the dosing device. The filter element is a cylindrical body with a closed top. The bottom of the filter element has an opening and a connecting pipe is connected above the opening. The lower end of the inner wall of the connecting pipe is provided with an internal thread. The top of the connecting pipe is sealed. A first water passage hole is opened at the upper end of the side wall of the connecting pipe. A second water passage hole is opened at the upper end of the side wall of the filter element. The filter element is filled with solid granular reagent.

[0013] In the above structure, the solid particulate reagent can be selected from corrosion and scale inhibitors, oxygen removers, feedwater alkalinity reducers, ion exchangers, regenerators, softeners, alkalinity adjusters, or scale removers, depending on the characteristics of the circulating water. Since all circulating water must first pass through an external pressure ultrafiltration device during normal operation, the water entering the dosing device is already clean water with impurities removed. The clean water enters the dosing device through the inlet pipe, passes through the first water passage, and enters the filter element, making full contact with the solid particulate reagent inside. The active components in the reagent slowly dissolve into the water. The water carrying the active components flows out through the second water passage at the top of the filter element into the inner cavity of the outer shell, and finally leaves through the outlet pipe. Because the water does not contain suspended impurities, it will not clog the gaps between the solid reagent particles, ensuring unobstructed water flow and preventing the dosing device from failing due to clogging. The sizes of the first and second water passages are smaller than the solid reagent particles, ensuring that the reagent particles are intercepted inside the filter element. This process enables the solid reagent to dissolve instantly and stably over a long period of time. After the reagent is consumed, only the filter element needs to be replaced as a whole, eliminating the need for frequent manual addition of the reagent.

[0014] Furthermore, the external pressure ultrafiltration device includes a housing and a tubular ultrafiltration membrane installed inside the housing. The housing has an inlet and an outlet. The inlet is connected to a filtration water supply pipeline downstream of the filter electric valve. The outlet is connected to a sewage discharge pipeline. The end of the sewage discharge pipeline is connected to an external sewage treatment device or a sewage ditch. A sewage discharge electric valve and a sewage discharge flow meter are sequentially installed on the sewage discharge pipeline from the outlet to the end of the sewage discharge pipeline. The tubular ultrafiltration membrane is connected to the filtration water supply pipeline downstream of the external pressure ultrafiltration device. A backwash electric valve is installed on the main water supply pipeline at a position between the downstream of the filtration water supply pipeline and the upstream of the dosing water supply pipeline. A water supply flow meter is installed on the main water supply pipeline before the filtration water supply pipeline. A makeup water pipeline is connected on the main water supply pipeline before the water supply flow meter. A makeup water electric valve is installed on the makeup water pipeline. The sewage discharge electric valve, sewage discharge flow meter, water supply flow meter, and makeup water electric valve are electrically connected to the controller.

[0015] In the above structure, during normal filtration, circulating water enters the outer shell through the inlet and, driven by pressure, permeates from the outside of the membrane fibers to the inside. Water molecules pass through the membrane wall and enter the inner cavity of the membrane fibers, flowing from the tubular ultrafiltration membrane to the filtration water supply pipeline as purified water. Suspended solids, bacteria, rust, and other contaminants in the water, due to their larger particle size than the membrane pores, are trapped on the outer surface of the membrane fibers. Because it is an external pressure type, contaminants only adhere to the outer side of the membrane fibers and do not clog the inner pores. When backwashing of the external pressure ultrafiltration device is required, the controller executes the backwashing procedure: the filter electric valve closes, the main line electric valve opens, the backwash electric valve closes, and the drain electric valve opens. At this time, the circulating water does not enter the filtration water supply pipeline or the chemical dosing water supply pipeline, but flows directly from the main water supply pipeline into the tubular ultrafiltration membrane of the external pressure ultrafiltration device, backwashing the membrane fibers and washing off the dirt adhering to the outer surface of the membrane fibers. The dirt is then discharged from the outlet through the drain pipeline. This backwashing mechanism uses reverse water flow to remove contaminants, restoring membrane filtration performance without disassembling the membrane module. A supply flow meter and a drain flow meter are used to detect the inlet water flow and the drain flow of the sewage pipe, respectively, and then replenish the circulating water system accordingly through a water replenishment pipe and a water replenishment electric valve. The water replenishment pipe is connected to an external purified water source.

[0016] Furthermore, a differential pressure switch is installed on the filtered water supply pipeline to detect the pressure difference between the inlet and outlet water of the external pressure ultrafiltration device, and the differential pressure switch is electrically connected to the controller.

[0017] In the above structure, as contaminants accumulate on the surface of the ultrafiltration membrane, the pressure difference across the membrane gradually increases. A differential pressure switch monitors this pressure difference in real time. When the pressure difference reaches a preset threshold, the switch sends a signal to the controller, which then automatically initiates the backwashing procedure. This mechanism enables on-demand backwashing triggered by the actual degree of contamination, rather than blind backwashing at fixed time intervals, ensuring timely cleaning while avoiding unnecessary water waste.

[0018] Furthermore, one or more of a conductivity sensor, a pH sensor, and a turbidity sensor are installed on the main water supply pipeline before the filter water supply pipeline, and the conductivity sensor, pH sensor, and turbidity sensor are electrically connected to the controller.

[0019] In the above structure, a conductivity sensor detects the ion concentration in the water in real time to control wastewater discharge and water replenishment; a pH sensor detects the pH value of the water, and if it exceeds the set range, the controller immediately alarms to remind operators to adjust the chemicals or replenish water; a turbidity sensor detects the suspended solids content in the water to evaluate the filtration effect and assist in determining the timing of backwashing. These sensors convert water quality parameters into electrical signals that are input to the controller, forming a closed-loop feedback control system that achieves automation and precision in water quality management. Specifically, when the ion concentration of the circulating water increases due to evaporation, the controller automatically opens the wastewater discharge valve based on the signal from the conductivity sensor, discharging the concentrated water through the wastewater discharge pipeline while simultaneously replenishing fresh water through the water replenishment pipeline, thereby controlling the concentration ratio within a reasonable range.

[0020] Furthermore, the end of the tubular ultrafiltration membrane is connected to the filtered water supply pipeline via a union connector.

[0021] In the above structure, the tubular ultrafiltration membrane can be disassembled through a union joint, making it easy to replace the tubular ultrafiltration membrane.

[0022] Furthermore, a chemical cleaning pipeline is connected to the inlet of the outer shell of the external pressure ultrafiltration device. The other end of the chemical cleaning pipeline is connected to the outlet of the outer shell of the external pressure ultrafiltration device. From the inlet to the outlet, the chemical cleaning pipeline is sequentially equipped with a dispensing electric valve, a circulating water pump, a reagent tank, and a returning electric valve. The dispensing electric valve, the circulating water pump, and the returning electric valve are electrically connected to the controller. A manual reagent valve is provided upstream of the dispensing electric valve and downstream of the returning electric valve on the chemical cleaning pipeline.

[0023] In the above structure, when stubborn fouling forms on the ultrafiltration membrane surface that cannot be removed by backwashing, the cleaning agent is prepared into a solution according to a specific ratio and injected into the reagent tank. After activating the chemical cleaning mode, the controller automatically closes all valves connected to the circulating water system, opens the electric discharge valve and the electric return valve, and starts the circulation pump, allowing the cleaning solution to circulate in a closed loop between the external pressure ultrafiltration unit and the reagent tank. The cleaning solution reacts chemically with the contaminants on the membrane surface, dissolving or peeling them off, thereby restoring the membrane's filtration performance. The chemical cleaning pipeline can be manually opened and closed via the manual valve on the reagent line to determine whether the chemical cleaning mode is activated.

[0024] Furthermore, an air washing pipeline is connected to the water inlet of the outer shell of the external pressure ultrafiltration device. An air compressor is installed at the other end of the air washing pipeline. A manual air washing valve and an electric air washing valve are installed sequentially from the water inlet to the air compressor on the air washing pipeline. The electric air washing valve, the air compressor, and the controller are electrically connected.

[0025] In the above structure, during backwashing, the controller activates the air compressor and the electric air-wash valve, allowing compressed air to enter the inlet of the external pressure ultrafiltration unit. The compressed air creates irregular bubble disturbances and a scouring effect on the outside of the membrane fibers, effectively removing sticky contaminants (such as bacteria and algae) adhering to the membrane surface, allowing these contaminants to be discharged with the water flow through the drain pipe. The combined operation of air washing and hydraulic backwashing significantly improves cleaning efficiency, making it particularly suitable for circulating water systems with high organic content. The air washing manual valve allows manual opening and closing of the air washing pipeline, determining whether the air washing mode is activated.

[0026] Furthermore, the gas washing pipeline is equipped with a check valve, a gas-water separator, and a pressure regulating valve from the manual gas washing valve to the electric gas washing valve.

[0027] In the above structure, the pressure regulating valve adjusts the high-pressure air output from the air compressor to a safe and effective pressure range, preventing excessive pressure from damaging the membrane module; the air-water separator removes condensate from the compressed air, preventing moisture from entering the membrane module and affecting the air washing effect or causing secondary pollution; the one-way valve only allows compressed air to flow towards the external pressure ultrafiltration device, preventing circulating water from flowing back into the air compressor and protecting the air compressor's internal components from corrosion. These components work together to ensure the safe and stable operation of the air washing module.

[0028] Furthermore, the controller is electrically connected to a data remote transmission cloud control module and an industrial control touch screen.

[0029] In the above structure, a PLC (Programmable Logic Controller) can be used as the controller. The industrial control touchscreen serves as the local human-machine interface, exchanging data with the controller via a communication protocol, displaying real-time equipment operating parameters and alarm information, and receiving manual commands from the user to write to the controller. The remote data transmission cloud control module packages and uploads all operating data collected by the controller to a designated cloud server via a wireless network. Users can access the cloud through a mobile phone or computer client to remotely view equipment status, receive alarm push notifications, and issue commands such as start, stop, and parameter modification. These commands are forwarded to the local controller for execution via the cloud. This mechanism achieves seamless integration of local control and remote monitoring.

[0030] The beneficial effects of this invention are:

[0031] Compared with the prior art, the advantages of this invention are:

[0032] 1. This invention achieves an optimized treatment sequence of filtration followed by chemical dosing by arranging the main water supply pipeline, the filtered water supply pipeline, and the chemical dosing pipeline in parallel, combined with the automated control of the electric valves by a controller. Employing an external pressure ultrafiltration device, contaminants adhere to the outer side of the membrane fibers, reducing clogging. Simultaneously, the equipment integrates three modes—automatic backwashing, air washing, and chemical cleaning—triggered by pressure difference, time, or turbidity, which can efficiently restore membrane flux, significantly extend the service life of the membrane module, and reduce operation and maintenance costs.

[0033] 2. The dosing device adopts a replaceable filter cartridge structure, filled with solid granular chemicals. The chemicals slowly dissolve as water flows through, achieving on-demand dissolution and long-term stable dosing. It eliminates the need for frequent manual handling of liquid chemicals, simplifying operation. Furthermore, the equipment eliminates the need for traditional water softeners, resulting in no high-chloride wastewater discharge. Backwashing and sewage discharge are performed as needed, reducing water waste. The solid chemicals are non-oxidizing, reducing the need for wastewater replacement, resulting in significant overall environmental benefits.

[0034] 3. The equipment integrates conductivity sensors, pH sensors, turbidity sensors, and differential pressure switches to monitor water quality and membrane pressure changes in real time. The controller automatically controls operations such as sewage discharge, water replenishment, and backwashing based on preset thresholds, achieving closed-loop automatic control of concentration ratio, pH value, and turbidity. This significantly improves the accuracy and automation level of water quality management, ensuring long-term stable operation of the equipment.

[0035] 4. The controller connects to an industrial control touchscreen and a cloud-based data transmission control module, supporting both local operation and remote monitoring. Users can view equipment status in real time, receive alarm information, and issue control commands via mobile phone or computer, achieving unattended operation and intelligent maintenance. This overcomes the drawbacks of traditional distributed implementation models, such as high coordination difficulty and high labor costs. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the present invention;

[0037] Figure 2 This is a cross-sectional view of the dosing device of the present invention;

[0038] Figure 3 This is a sectional view showing the disassembled components of the dosing device of the present invention.

[0039] The markings in the attached diagram are as follows: 1. Lower housing; 2. Upper housing; 3. Filter element; 4. Inlet pipe; 5. External thread; 6. Outlet pipe; 8. Connecting pipe; 9. Internal thread; 10. First water passage hole; 11. Second water passage hole; 12-1. Main water supply pipeline; 12-2. Filter water supply pipeline; 12-3. Chemical dosing water supply pipeline; 12-4. Sewage discharge pipeline; 12-5. Water replenishment pipeline; 12-6. Chemical cleaning pipeline; 12-7. Air washing pipeline; 13. Water pump; 14-1. Water supply flow meter; 14-2. Sewage discharge flow meter; 15-1. Filter electric valve; 15-2. Main line electric valve; 15-3. Backflush electric valve; 15-4. Sewage discharge electric valve; 16. Differential pressure switch; 7. Union connector; 18. External pressure ultrafiltration device; 18-1. Inlet; 18-2. Outlet; 18-3. Tubular ultrafiltration membrane; 19. Manual regulating valve; 20. Dosing device; 21. Controller; 22. Industrial control touch screen; 23. Data remote transmission cloud control module; 24-1. Conductivity sensor; 24-2. pH sensor; 24-3. Turbidity sensor; 25. Air compressor; 26. Air washing electric valve; 27. Pressure regulating valve; 28. Air-water separator; 29. ​​Check valve; 30. Air washing manual valve; 31. Chemical tank; 32. Circulating water pump; 33-1. Chemical discharge electric valve; 33-2. Chemical return electric valve; 34. Chemical tubing manual valve; 36. Water replenishment electric valve. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] like Figure 1-3 As shown, the present invention provides a technical solution: a multifunctional intelligent control water treatment device.

[0042] The main hardware structure of the equipment includes the main water supply pipeline 12-1, the filter water supply pipeline 12-2, the chemical dosing water supply pipeline 12-3, and the controller 21.

[0043] The inlet and outlet of the main water supply pipeline 12-1 are connected to the main pipeline of the circulating water system's circulating pump outlet (i.e., bypassed from the main circulating pipeline of the circulating water system, treated, and then reinjected into the main circulating pipeline). A water pump 13, a main electric valve 15-2, and a manual regulating valve 19 are connected in series from the inlet to the outlet on the main water supply pipeline 12-1. The water pump 13 is a vertical or multi-stage centrifugal pump, and its flow rate is selected according to the design flow rate of the external pressure ultrafiltration device 18, providing stable water supply pressure and flow. The start and stop of the water pump 13 are controlled by the controller 21 via an AC contactor. The main electric valve 15-2 is an electric ball valve with a diameter matching the water pump outlet pipe diameter. This valve has a slow-opening and slow-closing function to avoid water hammer impact. Its actuator power supply is AC 220V, and the control signal is a switching signal. The manual regulating valve 19 is a stainless steel or copper ball valve used for manually adjusting the water distribution entering the chemical dosing pipeline 12-3.

[0044] The filtration water supply pipeline 12-2 is connected in parallel with the main water supply pipeline 12-1. Its inlet end connects to the water pump 13 and the main electric valve 15-2, and its outlet end connects to the main electric valve 15-2 and the manual regulating valve 19. The filtration water supply pipeline 12-2 is connected in series from its inlet end to its outlet end with the filtration electric valve 15-1 and the external pressure ultrafiltration device 18. The filtration electric valve 15-1 is also an electric ball valve, with the same specifications as the main electric valve 15-2, and its opening and closing are controlled by the controller 21. The external pressure ultrafiltration device 18 uses one or more sets of parallel PVDF external pressure ultrafiltration membrane modules. Each module includes a stainless steel or fiberglass shell, internally encapsulating a PVDF hollow fiber ultrafiltration membrane with an outer diameter of approximately 1.2 mm and a filtration pore size of 0.03 microns. The shell has an inlet 18-1 and an outlet 18-2, and the effective filtration area of ​​a single membrane module is approximately 50 square meters. The number of membrane modules is determined based on the total circulating water volume of the system. For open circulating water systems (in contact with air), the total design filtration flow rate must meet the following requirement: 24-hour total filtration flow rate ≥ 60% of the total circulating water volume; for closed circulating water systems (not in contact with air), the total design filtration flow rate must meet the following requirement: 24-hour total filtration flow rate ≥ 20% of the total circulating water volume.

[0045] A backwash electric valve 15-3 is installed on the main water supply pipeline 12-1, located downstream of the filter water supply pipeline 12-2 and upstream of the chemical dosing water supply pipeline 12-3. This valve remains open during normal operation and is closed by a controller during backwashing. The chemical dosing water supply pipeline 12-3 is connected in parallel with the main water supply pipeline 12-1, with its inlet connected upstream of the manual regulating valve 19 and its outlet connected downstream of the manual regulating valve 19. Dosing devices 20 are connected in series on the pipeline. The number of dosing devices 20 is determined based on the total system water volume and the dissolution rate of the solid chemical. When multiple dosing devices 20 are combined, they are installed in series. The specific structure of the dosing device 20 is as follows... Figure 2 , Figure 3 As shown. The lower housing 1 and upper housing 2 are made of stainless steel, and their pressure rating is consistent with the pressure rating of the circulation system. The lower housing 1 is cylindrical, and the upper housing 2 is connected to the lower housing 1 via a quick-release chuck or flange. The bottom of the lower housing 1 is provided with a water inlet pipe 4, the upper end of which extends into the interior of the lower housing 1, and the end is machined with an external thread 5. The bottom of the side wall of the lower housing 1 is provided with a water outlet pipe 6. The filter element 3 is a cylindrical body with a closed top. The top of the side wall has a second water passage hole 11, and the bottom is provided with a connecting pipe 8. The inner wall of the connecting pipe 8 is machined with an internal thread 9 that matches the external thread 5 of the water inlet pipe 4, and the upper end of the side wall of the connecting pipe 8 has a first water passage hole 10. The filter element 3 is filled with a solid granular agent. The solid granular agent can be one or more of the following, depending on the characteristics of the circulating water: corrosion and scale inhibitor, deoxygenator, feedwater alkalinity reducer, ion exchanger, regenerator, softener, alkalinity regulator, or descaling agent. The working principle of the dosing device is as follows: water enters from the inlet pipe 4, enters the filter element 3 through the first water passage hole 10 on the side wall of the connecting pipe 8, comes into contact with the solid agent and dissolves the effective ingredients, and then the water carrying the effective ingredients flows out through the second water passage hole 11 on the top of the filter element 3 and finally flows out from the outlet pipe 6. The first water passage hole 10 and the second water passage hole 11 effectively intercept the agent particles to prevent them from entering the circulation system.

[0046] The controller 21 is a PLC programmable logic controller, equipped with necessary input / output modules. The controller 21 controls the water pump contactor and various electric valves via relays. The controller 21 has pre-installed control programs for equipment operation, backwashing, sewage discharge, and alarms. The controller 21 is also electrically connected to a data transmission cloud control module 23 and an industrial control touchscreen 22. The industrial control touchscreen 22 serves as a local human-machine interface, displaying real-time equipment operating parameters, historical data, and alarm information, and supports parameter modification and manual operation. The data transmission cloud control module 23 uploads all operating data collected by the controller 21 to a cloud platform in real-time via a wireless network. Users can remotely monitor the equipment's operating status, receive alarm notifications, and remotely issue operation commands via mobile phones, computers, and other terminals.

[0047] The operating procedure of the equipment in normal filtration and dosing modes is as follows: After the user presses the "Equipment Start" button on the industrial control touch screen 22, the controller 21 first checks whether the status of each valve is normal. The controller 21 issues the following commands: open the filter electric valve 15-1, keep the main line electric valve 15-2 in the closed state, open the backwash electric valve 15-3, and close the drain electric valve 15-4, the air scrubbing electric valve 26, the chemical discharge electric valve 33-1, and the chemical return electric valve 33-2. Then the controller 21 starts the water pump 13. The water flow path is as follows: after the circulating water is drawn out by the water pump 13, it all enters the external pressure ultrafiltration device 18 through the filter electric valve 15-1 for high-precision filtration. The filtered clean water flows to the manual regulating valve 19 through the backwash electric valve 15-3. The manual regulating valve 19 is used to adjust the water flow through the dosing water supply line 12-3: a portion of the purified water flows into the dosing device 20 through the dosing water supply line 12-3, where it comes into contact with the solid reagent to dissolve the active components before returning to the main line; the remaining purified water flows directly to the equipment outlet through the main passage of the manual regulating valve 19. Finally, all treated water is returned to the circulating water system. This process achieves continuous treatment by first filtering and then adding chemicals, and the entire equipment replaces the traditional water softener, avoiding the discharge of high-chlorinated wastewater.

[0048] The equipment features automatic concentration ratio control. An online conductivity sensor 24-1 is installed at the inlet of the main water supply pipeline 12-1. The controller 21 reads the conductivity value in real time and compares it with a preset threshold. When the measured value reaches the preset threshold, the controller 21 determines that the concentration ratio of the circulating water is too high and immediately opens the drain electric valve 15-4 (installed on the drain pipeline 12-4 connected to the outlet of the external pressure ultrafiltration device 18), while simultaneously opening the water supply electric valve 36 on the water supply pipeline 12-5 to replenish fresh water. As concentrated water is discharged and fresh water is added, the conductivity value gradually decreases. When the measured value returns to the preset controllable range, the controller 21 closes the drain electric valve 15-4 and the water supply electric valve 36. The entire process is fully automatic, stabilizing the concentration ratio within the set range. The sewage flow meter 14-2 monitors the sewage flow in real time. Its function is as follows: when the sewage electric valve 15-4 is closed, if the sewage flow meter 14-2 detects that the instantaneous flow is not zero, the controller 21 determines that there is internal leakage or malfunction in the valve and immediately issues an alarm on the touch screen 22 and the cloud module 23. At the same time, the sewage flow meter 14-2 is used to detect the drainage flow of the sewage pipe 12-4 to replenish the circulating water system accordingly.

[0049] The equipment also features online monitoring of pH and turbidity. The pH sensor 24-2 collects the pH value of the circulating water in real time. When the detected value exceeds a preset reasonable range, the controller 21 immediately generates an alarm signal and pushes it to the touchscreen 22 and cloud module 23, reminding the user to take timely action to prevent corrosion or scaling of pipes, ultrafiltration membranes, and other components due to excessively acidic or alkaline water. The turbidity sensor 24-3 monitors the turbidity of the circulating water. When the turbidity value is too high, it can be linked to adjust the backwashing frequency or used as one of the conditions to trigger backwashing.

[0050] The equipment features intelligent backwashing to clean contaminants adhering to the surface of the ultrafiltration membrane. Backwashing triggering conditions include time-controlled, differential pressure-controlled, and turbidity-controlled modes, which can be flexibly selected or combined according to actual operating conditions. Differential pressure switch 16 detects the pressure difference between the inlet and outlet water of the external pressure ultrafiltration unit 18; backwashing is triggered when the pressure difference reaches a set threshold. The specific backwashing steps are as follows: When the triggering conditions are met, controller 21 closes the filter electric valve 15-1, closes the backwash electric valve 15-3, then opens the drain electric valve 15-4, and opens the main line electric valve 15-2. Water flows into the main water supply pipeline through the main line electric valve 15-2. Since the backwash electric valve 15-3 is closed, the water flow will not continue forward or enter the chemical dosing branch. Instead, it enters in reverse from inside the tubular ultrafiltration membrane 18-3 of the external pressure ultrafiltration device 18, flushing away contaminants adhering to the outer surface of the membrane fibers from the inside out. The flushing water flows out from the outlet 18-2 and is discharged through the drain pipe 12-4. Pulse control can be used during backwashing: the backwash water flow is activated for 30-60 seconds, then closed, and reopened after a 30-60 second interval, repeated 3-5 times. After backwashing, the controller 21 closes the drain electric valve 15-4, closes the main line electric valve 15-2, opens the filter electric valve 15-1, and opens the backwash electric valve 15-3, restoring normal filtration. The entire backwashing process is automatically controlled by the controller 21 without manual intervention.

[0051] The equipment can be equipped with an air-washing module. If the equipment is equipped with an air-washing module, during the backwashing process described above, the controller 21 simultaneously performs the air-washing operation: the controller 21 turns on the air compressor 25 and opens the air-washing electric valve 26. The compressed air is pressure-regulated by the pressure regulating valve 27 (the air supply pressure is greater than 1.2 times the water supply pressure of the water pump 13, and less than the rated pressure of the external pressure ultrafiltration device 18), then passes through the air-water separator 28 to remove water, and the one-way valve 29 to prevent backflow, and finally enters the inlet 18-1 of the external pressure ultrafiltration device 18. The compressed air forms bubbles on the outside of the membrane fibers to flush away the contaminants, working together with the backwashing water flow to efficiently remove sticky pollutants. The duration of air circulation is the same as the duration of backwashing. After flushing, the controller 21 closes the air-washing electric valve 26 and the air compressor 25. If the air-washing module is not needed for a long time, the air-washing pipeline 12-7 can be closed through the air-washing manual valve 30.

[0052] The equipment can also be equipped with a chemical cleaning module. Chemical cleaning is performed when the ultrafiltration membrane requires deep cleaning. The operation steps are as follows: First, fill water into the reagent tank 31, add cleaning agent at a rate of 500 to 1000 grams per ton of water, and stir evenly. Then, start the "chemical cleaning mode" via the touch screen 22. The controller 21 automatically executes: shut off the water pump 13, and close all valves connected to the circulating water system (filter electric valve 15-1, main line electric valve 15-2, backwash electric valve 15-3, drain electric valve 15-4, etc.). Open the chemical discharge electric valve 33-1 and the chemical return electric valve 33-2 (the manual valve 34 of the chemical pipeline is pre-opened). Start the circulating water pump 32, so that the cleaning solution enters the inlet 18-1 of the external pressure ultrafiltration device 18 from the reagent tank 31 through the chemical discharge electric valve 33-1. After flowing over the outer surface of the membrane, the cleaning solution flows out from the outlet 18-2 and returns to the reagent tank 31 through the chemical return electric valve 33-2, forming a closed loop. Controller 21 controls the circulating cleaning (default circulation time is 1 hour, which can be modified on-site according to actual needs via industrial control touchscreen 22 or data remote transmission cloud control module 23). After cleaning, the circulating pump 32 is turned off, and the discharge electric valve 33-1 and return electric valve 33-2 are closed. After chemical cleaning is completed, the equipment returns to filtration mode. If the chemical cleaning module is not needed for a long time, the chemical cleaning pipeline 12-6 can be closed via manual valve 34.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional intelligent control water treatment device, characterized in that, include: The main water supply pipeline (12-1) is connected at both ends to the circulating water pipeline that needs to be treated. A water pump (13), a main electric valve (15-2) and a manual regulating valve (19) are connected in series from the inlet end to the outlet end on the main water supply pipeline (12-1). The filtered water supply pipeline (12-2) is connected in parallel with the main water supply pipeline (12-1). Its inlet and outlet are connected to the main water supply pipeline (12-1) upstream and downstream of the main electric valve (15-2), respectively. The filtered water supply pipeline (12-2) is equipped with a filtered electric valve (15-1) and an external pressure ultrafiltration device (18) in series from its inlet to its outlet. The chemical dosing water supply pipeline (12-3) is connected in parallel with the main water supply pipeline (12-1). Its inlet and outlet ends are respectively connected to the main water supply pipeline (12-1) upstream and downstream of the manual regulating valve (19). A dosing device (20) is installed on the chemical dosing water supply pipeline (12-3). and controller (21), which is electrically connected to water pump (13), main electric valve (15-2), and filter electric valve (15-1); The dosing device (20) includes a lower shell (1), an upper shell (2), a filter element (3), and an inlet pipe (4). The lower shell (1) and the upper shell (2) are both cylindrical semi-closed cylinders. The lower shell (1) has an opening at the top, and the upper shell (2) has an opening at the bottom. When the openings of the lower shell (1) and the upper shell (2) are interlocked, they form a closed cylinder. The inlet pipe (4) is connected through the bottom of the lower shell (1). The lower end of the inlet pipe (4) extends out of the bottom of the lower shell (1) and is connected to the dosing water supply pipeline (12-3) upstream of the dosing device (20). The upper end of the inlet pipe (4) extends vertically upward inside the lower shell (1). The upper end of the outer wall of the inlet pipe (4) is provided with an external thread (5). The bottom of the side wall of the lower shell (1) is connected to an outlet pipe (6). The outlet pipe (6) is connected to the dosing water supply pipeline downstream of the dosing device (20). (12-3) Connected, the filter element (3) is a cylindrical body, the top of the filter element (3) is closed, the bottom of the filter element (3) is provided with an opening and a connecting pipe (8) is connected above the opening, the lower end of the inner wall of the connecting pipe (8) is provided with an internal thread (9), the top of the connecting pipe (8) is sealed, the upper end of the side wall of the connecting pipe (8) is provided with a first water passage hole (10), the upper end of the side wall of the filter element (3) is provided with a second water passage hole (11), the filter element (3) is filled with solid granular agent; the water flow direction in the dosing device (20) is as follows: the water flows in from the inlet pipe (4), enters the filter element (3) through the first water passage hole (10) on the side wall of the connecting pipe (8), comes into contact with the solid agent and dissolves the effective ingredients, and then the water carrying the effective ingredients flows out through the second water passage hole (11) at the top of the filter element (3), and finally flows out from the outlet pipe (6).

2. The multifunctional intelligent control water treatment equipment according to claim 1, characterized in that, The external pressure ultrafiltration device (18) includes a housing and a tubular ultrafiltration membrane (18-3) installed inside the housing. The housing has an inlet (18-1) and an outlet (18-2). The inlet (18-1) is connected to a filter water supply pipeline (12-2) downstream of the filter electric valve (15-1). A sewage discharge pipeline (12-4) is connected to the outlet (18-2). The end of the sewage discharge pipeline (12-4) is connected to an external sewage treatment device or a sewage ditch. A sewage discharge electric valve (15-4) and a sewage discharge flow meter (14-2) are sequentially installed on the sewage discharge pipeline (12-4) from the outlet (18-2) to the end of the sewage discharge pipeline (12-4). The tubular ultrafiltration membrane (18-3) is connected to the filter water supply pipeline downstream of the external pressure ultrafiltration device (18). The pipeline (12-2) is connected. A backwash electric valve (15-3) is installed on the main water supply pipeline (12-1) at a position between the downstream of the filter water supply pipeline (12-2) and the upstream of the dosing water supply pipeline (12-3). A water supply flow meter (14-1) is installed on the main water supply pipeline (12-1) at a position before the filter water supply pipeline (12-2). A water replenishment pipeline (12-5) is connected on the main water supply pipeline (12-1) at a position before the water supply flow meter (14-1). A water replenishment electric valve (36) is installed on the water replenishment pipeline (12-5). The sewage discharge electric valve (15-4), sewage discharge flow meter (14-2), water supply flow meter (14-1), water replenishment electric valve (36) are electrically connected to the controller (21).

3. The multifunctional intelligent control water treatment equipment according to claim 2, characterized in that, A differential pressure switch (16) is installed on the water supply pipeline (12-2) to detect the pressure difference between the inlet and outlet water of the external pressure ultrafiltration device (18). The differential pressure switch (16) is electrically connected to the controller (21).

4. The multifunctional intelligent control water treatment equipment according to claim 2, characterized in that, One or more of the following sensors are installed on the main water supply pipeline (12-1) before the filter water supply pipeline (12-2): conductivity sensor (24-1), pH sensor (24-2), and turbidity sensor (24-3). The conductivity sensor (24-1), pH sensor (24-2), and turbidity sensor (24-3) are electrically connected to the controller (21).

5. A multifunctional intelligent control water treatment device according to claim 2, characterized in that, The end of the tubular ultrafiltration membrane (18-3) is connected to the filtered water supply pipeline (12-2) via a union (17).

6. A multifunctional intelligent control water treatment device according to claim 2, characterized in that, The inlet (18-1) of the outer shell of the external pressure ultrafiltration device (18) is connected to a chemical cleaning pipeline (12-6). The other end of the chemical cleaning pipeline (12-6) is connected to the outlet (18-2) of the outer shell of the external pressure ultrafiltration device (18). The chemical cleaning pipeline (12-6) is provided with a drug dispensing electric valve (33-1), a circulating water pump (32), a drug tank (31), and a drug return electric valve (33-2) in sequence from the inlet (18-1) to the outlet (18-2). The drug dispensing electric valve (33-1), the circulating water pump (32), and the drug return electric valve (33-2) are electrically connected to the controller (21). The chemical cleaning pipeline (12-6) is provided with a manual drug pipe valve (34) upstream of the drug dispensing electric valve (33-1) and downstream of the drug return electric valve (33-2).

7. A multifunctional intelligent control water treatment device according to claim 2, characterized in that, The inlet (18-1) of the outer shell of the external pressure ultrafiltration device (18) is connected to an air washing pipeline (12-7). An air compressor (25) is installed at the other end of the air washing pipeline (12-7). A manual air washing valve (30) and an electric air washing valve (26) are installed sequentially from the inlet (18-1) to the air compressor (25) on the air washing pipeline (12-7). The electric air washing valve (26), the air compressor (25) and the controller (21) are electrically connected.

8. A multifunctional intelligent control water treatment device according to claim 7, characterized in that, The gas washing pipeline (12-7) is equipped with a check valve (29), a gas-water separator (28) and a pressure regulating valve (27) from the gas washing manual valve (30) to the gas washing electric valve (26).

9. A multifunctional intelligent control water treatment device according to claim 1, characterized in that, The controller (21) is electrically connected to a data remote transmission cloud control module (23) and an industrial control touch screen (22).

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