High-speed filtering device with intelligent cleaning function and method

Abstract

According to the high-speed filtering device and method with the intelligent cleaning function, operation parameters in the filter can be monitored in real time through the sensor, in combination with an intelligent algorithm of the PLC, a cleaning mode can be triggered according to monitoring data, and a conventional washing mode, a backwashing mode or a vibration enhancement mode can be flexibly selected; the dynamic adjusting mode effectively avoids the problem of excessive cleaning or insufficient cleaning possibly caused by a traditional timing cleaning method. Meanwhile, the device integrates a PLC (Programmable Logic Controller) and an HMI (Human Machine Interface), so that the real-time display of the running state of the filter, the automatic triggering of a cleaning mode and the efficient management of running records are realized, the manual intervention frequency is greatly reduced, and the automation level of the system is improved. Besides, the fiber bundles are adopted as the filtering medium, and a water-gas mixed cleaning technology is matched, so that the filtering precision is remarkably improved, the dirt removal efficiency is effectively enhanced, and the efficient and stable filtering requirements are fully met.

Description

Technical Field

[0001] The present application relates to the field of water treatment technology, and in particular to a high-speed filtering device and method with intelligent cleaning function. Background Art

[0002] Water pretreatment is an essential step in the deep desalination process. Its treatment effect directly affects the efficiency of the next step of deep water treatment and the normal operation of the ion exchange device. In the water pretreatment process, filtration is an extremely important link.

[0003] Traditional filtration technologies typically use granular materials, such as quartz sand, as filter media. Filters using this type of media offer simple structures, and after a filter layer fails, its filtration capacity can be easily restored through backwashing. However, due to the inherent limitations of granular filter media, traditional filters are significantly restricted in terms of pollutant interception capacity, filtration speed, and effluent quality.

[0004] In recent years, fiber bundles made from filaments have gradually replaced traditional granular filter media as a new type of filter media. Fiber bundles are arranged at a certain density in the filter. Due to their small fiber size and large specific surface area, they have strong interfacial adsorption capacity. The softness of the fiber bundles allows for density adjustment during the filtration process, making the minimum pores between the fibers much smaller than those in traditional granular filter media, significantly improving the dirt interception capacity and achieving deep filtration. Furthermore, compared with traditional filter media such as quartz sand, fiber bundle filters have a stronger operating capacity. For example, under the same conditions, the output of a quartz sand filter is approximately 60 t / h, while that of a fiber bundle filter can reach 95 t / h, overcoming the problem of insufficient filtration accuracy caused by particle size limitations of traditional granular filter media. Due to these advantages, fiber bundles have been widely used in filters.

[0005] However, with the popularity of fiber bundle filters, some problems have also been exposed in the operation of the equipment, mainly in the following aspects: (1) Sludge accumulation on filter media and movable orifice plates: During long-term use, sludge is easily accumulated on the fiber bundles and movable orifice plates, which directly affects the filtration effect and requires regular cleaning; (2) The cleaning mode relies on manual or timed control: Existing fiber filters mostly rely on operators to manually start the cleaning mode based on experience to judge the operating status, or automatically trigger cleaning at preset time intervals. This method is difficult to accurately match the actual working conditions and is prone to over-cleaning or under-cleaning; (3) Cleaning efficiency and resource consumption issues: Timed or fixed Constant flow cleaning may cause the cleaning process to last too long or be insufficient in intensity, which increases water and energy consumption and reduces cleaning efficiency; (4) Wear of fiber bundles and shortened equipment life: During frequent cleaning, the fiber bundles may be mechanically damaged or worn by hydraulic erosion, affecting the long-term stability and service life of the equipment; (5) Poor adaptability of cleaning modes: The existing cleaning methods are relatively simple and cannot select the optimal cleaning mode according to different pollutant types and load changes, which limits the cleaning effect; (6) High operating and maintenance costs: The operation and maintenance of filters are highly dependent on manual experience, and operators need to intervene frequently, which not only increases operating costs but also increases the difficulty of maintenance.

[0006] In summary, there is still much room for improvement in the existing fiber filters in terms of intelligent cleaning, resource utilization efficiency, and equipment maintenance. There is an urgent need for an intelligent cleaning solution that can achieve precise cleaning, reduce resource waste, and extend equipment life. Summary of the Invention

[0007] In response to the above problems, the present application provides a high-speed filtration device and method with intelligent cleaning function, which can achieve precise cleaning, reduce resource waste, and extend equipment life, ensuring that the filter can filter at high speed and high efficiency.

[0008] To achieve the purpose of this application, this application provides the following technical solutions:

[0009] First aspect:

[0010] The present application provides a high-speed filtering device with an intelligent cleaning function, comprising: a filter, a sensor, a PLC control cabinet, and a human-machine interface (HMI); the sensor is connected to the filter and is used to collect operating parameters in the filter; the PLC control cabinet is connected to the sensor and is used to process the sensor signal and trigger different cleaning modes according to set logic; the HMI is installed on the PLC control cabinet and is used to display the operating status and operation cleaning mode.

[0011] In one possible implementation, the filter includes: a tank body, an air compressor, and a water pump; the air compressor is connected to the PLC control cabinet and the air inlet pipe of the tank body to provide an air source for water-gas mixed cleaning; the water pump is connected to the tank body and the PLC control cabinet to provide the required water flow power.

[0012] In one possible implementation, the tank body includes: a water inlet pipe, a water outlet pipe, a forward wash pipe, a backwash pipe, an air intake pipe, an exhaust pipe, a fiber bundle, a fixed orifice plate, and a movable orifice plate; the air intake pipe is connected to the air compressor; a control valve is provided on the water inlet pipe, the forward wash pipe, the backwash pipe, and the air intake pipe, and the control valve is connected to the PLC control cabinet for controlling the opening and closing of the pipeline; a fixed orifice plate and a movable orifice plate are provided at the upper and lower parts of the tank body, and the inner wall of the tank body is sprayed with anti-corrosion material; a fiber bundle is connected between the fixed orifice plate and the movable orifice plate, and the fiber bundle is connected to the fixed orifice plate and the movable orifice plate through a hook; the water inlet pipe and the water outlet pipe are used for filtering water; the forward wash pipe is used for cleaning the fiber bundle; the backwash pipe is used for cleaning the fiber bundle; the air intake pipe and the exhaust pipe are used for inputting and discharging air; the fiber bundle is used for filtering impurities.

[0013] In one possible implementation, the tank body further includes: the fiber bundle is made of corrosion-resistant, highly wear-resistant material and coated with an anti-pollution coating on the surface; the movable orifice plate has a movable mechanism that can generate vibration; and the hook is a snap-on or rotary locking hook.

[0014] In one possible implementation, the sensor includes a pressure sensor and a flow sensor; the pressure sensor is located on the water inlet pipe and the water outlet pipe of the filter, and is used to collect the pressure inside the filter; the flow sensor is located on the water outlet pipe of the filter, and is used to collect the water output of the filter.

[0015] In one possible implementation, the PLC control cabinet provides two cleaning modes, including: a forward wash water-air mixed cleaning mode and a backwash water-air mixed cleaning mode, wherein the air-water ratio of the water-air mixed cleaning is 1:10 to 1:20;

[0016] The movable orifice plate of the filter tank body vibrates during the cleaning process, and cooperates with the water-gas mixture to clean the fiber bundles of the filter tank body.

[0017] In one possible implementation, the two cleaning modes include:

[0018] When the pressure difference collected by the sensor is less than 0.05 MPa or the collected water flow is less than 50-70% of the preset water flow, the forward wash water-air mixed cleaning mode is triggered, the control valve on the forward wash pipe is opened, the control valve on the intake pipe is opened, and water and air are injected;

[0019] When the pressure difference collected by the sensor is greater than 0.05MPa or the collected water flow is greater than 50-70% of the preset water flow, the backwash water-gas mixed cleaning mode is triggered, the control valve on the backwash pipe is opened, the control valve on the air intake pipe is opened, and water and air are injected.

[0020] In one possible implementation, the PLC control cabinet includes: a PLC controller, a signal interface device, and an HMI interface; the PLC controller includes a CPU module, an I / O module, and a communication module, which are used to receive the sensor signal, execute control logic, and output control signals; the signal interface device connects the signal of the external device to the PLC controller; and the HMI interface is used to connect the HMI signal.

[0021] Second aspect:

[0022] The present application provides a high-speed filtration method with intelligent cleaning function, comprising:

[0023] Filtration stage: Raw water is introduced through the filter's inlet pipe. The water flows through the fiber bundle filter material to remove suspended particles and impurities. The purified water is discharged from the outlet pipe. During the filtration process, sensors collect real-time operating parameters in the filter, including pressure difference and water flow rate.

[0024] Intelligent cleaning triggering stage: using the PLC controller to trigger the cleaning mode according to the internal operating parameters of the filter collected by the sensor;

[0025] Cleaning mode selection stage: When the pressure difference collected by the sensor is less than 0.05MPa or the collected water flow is less than 50-70% of the preset water flow, the forward wash water-air mixed cleaning mode is triggered, the control valve on the forward wash pipe is opened, the control valve on the intake pipe is opened, and water and air are injected; when the pressure difference collected by the sensor is greater than 0.05MPa or the collected water flow is greater than 50-70% of the preset water flow, the backwash water-air mixed cleaning mode is triggered, the control valve on the backwash pipe is opened, the control valve on the intake pipe is opened, and water and air are injected;

[0026] Cleaning process stage: Open the control valve of the corresponding cleaning mode, start the water pump and air compressor, and inject water and air into the filter to form a water-air mixture to flush the filter layer; use the PLC to monitor the cleaning process parameters in real time and adjust the cleaning intensity and duration;

[0027] Filtration recovery stage: After cleaning is completed, the control valve is closed and the filter resumes normal operation.

[0028] In one possible implementation, the PLC controller monitors the pressure difference change and flow recovery during the cleaning process in real time, and automatically ends the cleaning when the pressure difference recovers to below 0.02 MPa or the flow recovers to more than 85% of the normal flow.

[0029] Beneficial effects of this application:

[0030] The present application provides a high-speed filtration device and method with an intelligent cleaning function, which can monitor the operating parameters inside the filter in real time through sensors. Combined with the intelligent algorithm of the PLC controller, it can trigger the cleaning mode according to the monitoring data and flexibly select the forward wash, backwash or vibration enhancement mode. This dynamic adjustment method effectively avoids the problems of excessive cleaning or insufficient cleaning that may be caused by traditional timed cleaning methods. At the same time, the device integrates a PLC controller and an HMI (human-machine interface) to achieve real-time display of the filter's operating status, automatic triggering of the cleaning mode, and efficient management of operation records, which greatly reduces the frequency of manual intervention and improves the automation level of the system. In addition, the use of fiber bundles as filter media, combined with water-gas mixing cleaning technology, not only significantly improves the filtration accuracy, but also effectively enhances the dirt removal efficiency, fully meeting the needs of efficient and stable filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application.

[0032] Figure 1 A schematic structural diagram of a high-speed filtration device with intelligent cleaning function provided in an embodiment of the present application;

[0033] Figure 2 A front view schematic diagram of the filter tank structure provided in an embodiment of the present application;

[0034] Figure 3 A side view of the filter tank structure provided in an embodiment of the present application;

[0035] Figure 4 A flowchart of a high-speed filtration method with intelligent cleaning function provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] 1-Filter, 11-Tank, 111-Water inlet pipe, 112 Backwash pipe, 113-Forward wash pipe, 114-Inlet pipe, 115-Water outlet pipe, 116-Exhaust pipe, 117-Fiber bundle, 118-Fixed orifice plate, 119-Movable orifice plate, 120-Movable mechanism, 121-Control valve, 12-Water pump, 13-Air compressor, 2-Sensor, 3-PLC cabinet, 4-Human-machine interface HMI. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0039] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features indicated. Thus, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; and in the description of this application, unless otherwise specified, "plurality" means two or more.

[0040] The embodiments of the present application are further described below with reference to the accompanying drawings.

[0041] Example 1

[0042] Figure 1 A high-speed filtering device with intelligent cleaning function provided in an embodiment of the present application includes a filter 1, a sensor 2, a PLC control cabinet 3, and a human-machine interface HMI 4;

[0043] The sensor 1 is connected to the filter 2 and is used to collect operating parameters in the filter 1;

[0044] The PLC control cabinet 3 is connected to the sensor 2 and is used to process the signal of the sensor 2 and trigger different cleaning modes according to the set logic;

[0045] The HMI 4 is installed on the PLC control cabinet 3 and is used to display the operating status and operation cleaning mode.

[0046] Among them, the sensor 2 includes a pressure sensor and a water flow sensor. The pressure sensor is installed on the water inlet pipe 111 and the water outlet pipe 115 of the filter 1 to collect the internal pressure of the filter 1; the water flow sensor is installed on the water outlet pipe to collect the water flow during water outlet.

[0047] In one possible implementation, pressure collection points are respectively set on the water inlet pipe 111 and the water outlet pipe 115 of the filter 1 (near the filter inlet and outlet), and a pressure-resistant hose or metal pipe is used to connect the pressure point on the water inlet pipe to the positive pressure end of the differential pressure sensor and to connect the pressure point on the water outlet pipe 115 to the negative pressure end.

[0048] In one possible embodiment, a straight pipe section is selected on the water outlet pipe 115 of the filter 1, and any one of the three connection methods, flange connection, threaded connection, and clamp-type connection, is used to connect the water flow sensor to the straight pipe section to ensure that the installation direction of the sensor is consistent with the water flow direction.

[0049] Figure 2 、 Figure 3 A filter tank structure provided in an embodiment of the present application includes: a tank body 11, an air compressor 13, and a water pump 12;

[0050] The air compressor 13 is connected to the PLC control cabinet 3 and the air inlet pipe 111 of the tank body 11, and is used to provide an air source for water-gas mixed cleaning;

[0051] The water pump 12 is connected to the tank 11 and the PLC control cabinet 3 to provide required water flow power.

[0052] Optionally, the tank body includes: a water inlet pipe 111, a water outlet pipe 115, a forward wash pipe 113, a backwash pipe 112, an air inlet pipe 114, an exhaust pipe 116, a fiber bundle 117, a fixed orifice plate 118, and a movable orifice plate 119;

[0053] The air intake pipe 111 is connected to the air compressor 13;

[0054] The water inlet pipe 111, the forward wash pipe 113, the backwash pipe 112, and the air inlet pipe 114 are provided with a control valve 121, which is connected to the PLC control cabinet 3 and is used to control the opening and closing of the pipeline;

[0055] The upper and lower parts of the tank body 11 are provided with a fixed orifice plate 118 and a movable orifice plate 119, and the inner wall of the tank body is sprayed with anti-corrosion material;

[0056] A fiber bundle 117 is connected between the fixed orifice plate 118 and the movable orifice plate 119, and the fiber bundle 117 is connected to the fixed orifice plate 118 and the movable orifice plate 119 via a hook;

[0057] The water inlet pipe 111 and the water outlet pipe 115 are used for filtering water; the forward wash pipe 113 is used for cleaning the fiber bundle 117; the backwash pipe 112 is used for cleaning the fiber bundle 117; the air inlet pipe 114 and the exhaust pipe 116 are used for inputting and exhausting air; the fiber bundle 117 is used for filtering impurities.

[0058] In one possible embodiment, the air compressor 13 is connected to the air inlet pipe of the filter tank through any one of three pipes: a steel pipe, a rubber high-pressure hose, and a stainless steel bellows, and the connection method is any one of a quick connector connection, a threaded connection, and a flange connection.

[0059] In one possible embodiment, the operating status signal of the air compressor 13 (such as the start / stop signal, the operating status feedback signal, etc.) is connected to the digital input (DI) interface of the PLC via a cable, and the PLC output control signal is connected to the start or stop control loop of the air compressor via a cable.

[0060] In one possible embodiment, a filter screen or coarse filter is installed in front of the water inlet of the water pump 12 to prevent impurities from entering the water pump and causing damage. The water pump is connected to the water inlet 111 of the tank body 11 through any one of flange connection, threaded connection, and flange connection.

[0061] In one possible implementation, the water pump 12 is started and stopped through a contactor or relay, and the PLC transmits the start / stop signal to the water pump's electronic control system through a digital output (DO) interface. The water pump's operating status (such as running / fault shutdown) is fed back to the PLC through a digital input (DI) interface.

[0062] Optionally, the tank body 11 also includes: the fiber bundle 117 is made of corrosion-resistant and highly wear-resistant material, and the surface is coated with an anti-pollution coating; the movable orifice plate 119 has a movable mechanism 120 that can generate vibration; the hook is a snap-on or rotary locking hook.

[0063] In a possible implementation, the corrosion-resistant and highly wear-resistant material may be a composite material made of one or more of polypropylene fiber, polyester fiber, polytetrafluoroethylene fiber, and aramid fiber.

[0064] In one possible embodiment, the anti-pollution coating can be selected from one or more composite coatings of polytetrafluoroethylene (PTFE) coating, silicone rubber coating, alumina nano coating, and self-cleaning coating (photocatalytic TiO2 coating), and any one of the three methods of spraying, dipping, and sintering can be selected for coating processing.

[0065] In one possible embodiment, the movable mechanism 120 can be a spring, and the movable orifice plate 119 is connected to the fixed orifice plate 118 through the spring. The spring provides a certain elastic reset force, so that the movable orifice plate 118 can produce up and down vibration or displacement during the filtration or cleaning process. It can also be a hydraulic cylinder or hydraulic rod, and the movable orifice plate 118 is connected to the hydraulic cylinder or hydraulic rod. The hydraulic system controls the displacement amplitude and frequency of the orifice plate by adjusting the oil pressure; the movable orifice plate 118 can also be connected to a stepper motor or a servo motor, and the motor transmits power to the movable orifice plate through a mechanical rod, and the driving rod controls the periodic up and down movement or swing of the orifice plate.

[0066] Optionally, the sensor 2 includes a pressure sensor and a flow sensor;

[0067] The pressure sensor is located on the water inlet pipe and the water outlet pipe of the filter and is used to collect the pressure inside the filter;

[0068] The flow sensor is located on the water outlet pipe of the filter and is used to collect the water output of the filter.

[0069] Optionally, the PLC control cabinet 3 provides two cleaning modes, including: a forward washing water-gas mixed cleaning mode and a backwash water-gas mixed cleaning mode, wherein the air-water ratio of the water-gas mixed cleaning is 1:10 to 1:20;

[0070] The movable orifice plate 118 of the filter tank body 11 vibrates during the cleaning process, and cooperates with the water-gas mixture to clean the fiber bundle 117 of the filter tank body.

[0071] Among them, the two cleaning modes include:

[0072] When the pressure difference detected by the sensor 2 is less than 0.05 MPa or the water flow rate detected is less than 50-70% of the preset water flow rate, the forward wash water-air mixed cleaning mode is triggered, the control valve 120 on the forward wash pipe 113 is opened, and the control valve 120 on the air intake pipe 114 is opened to inject water and air;

[0073] When the pressure difference collected by the sensor 2 is greater than 0.05 MPa or the collected water flow rate is greater than 50-70% of the preset water flow rate, the backwash water-gas mixed cleaning mode is triggered, the control valve 120 on the backwash pipe 112 is opened, and the control valve 120 on the air intake pipe 114 is opened to inject water and air.

[0074] In a possible implementation, the preset water flow rate may be a rated flow rate provided by the filter manufacturer.

[0075] In a possible embodiment, the working process of the forward washing water-gas mixed cleaning mode is as follows: a pressure sensor is installed on the water inlet pipe 111 and the water outlet pipe 115 of the filter to collect the inlet and outlet water pressure difference of the filter 1 in real time, and a flow sensor is installed on the water outlet pipe 115 of the filter 1 to collect the outlet flow of the filter 1 in real time, and the collected pressure difference value and flow value are sent to the PLC controller 3; the PLC sends a control signal according to the pressure difference value being lower than 0.05MPa or the water flow value being lower than 50% to 70% of the preset normal value, if any one of the conditions is met, the PLC sends a control signal to open the electric control valve on the forward washing pipeline 113, open the electric control valve on the air intake pipeline 112, start the water pump 12, inject water into the forward washing pipe 113, start the air compressor 13, and inject air into the air intake pipe 113; water and air enter the filter from the forward washing pipe 113 and the air intake pipe 114 respectively 1. Water flows through the surface of the fiber bundle 117 to form a scouring effect. Air bubbles adhere to the fiber surface, producing a stripping effect. The water-gas mixed fluid further enters the interior of the fiber bundle 117, accelerating the desorption and scouring of particulate matter. At the same time, the PLC controller controls the vibration mechanism of the movable orifice plate 119 to start. Through hydraulic drive or spring loading, the orifice plate generates a vibration with a frequency of 1 to 3 Hz to enhance the cleaning effect. During this process, the flow rate of the water pump 12 and the air pressure of the air compressor 13 are adjusted to ensure that the water-gas mixing ratio is between 1:10 and 1:20; the water-gas flow rate is monitored by the flow meter and the air pressure sensor, and real-time feedback is sent to the PLC for adjustment; when the cleaning is completed, the PLC issues a command to close the electric control valve on the forward washing pipeline 113, close the electric control valve on the air intake pipeline 114, stop the operation of the water pump 12 and the air compressor 13, and the filter switches back to normal filtration mode.

[0076] In a possible embodiment, the working process of the backwash water-gas mixed cleaning mode is as follows: a pressure sensor is installed on the water inlet pipe 111 and the water outlet pipe 115 of the filter to collect the inlet and outlet water pressure difference of the filter 1 in real time, and a flow sensor is installed on the water outlet pipe 111 of the filter to collect the outlet flow of the filter in real time, and the collected pressure difference value and flow value are sent to the PLC controller; the PLC sends a control signal according to the pressure difference value being higher than 0.05MPa or the water flow value being higher than 50% to 70% of the preset normal value, if any one of the conditions is met, the PLC sends a control signal to open the electric control valve on the backwash pipe 112, open the electric control valve on the air intake pipe 114, start the water pump 12, inject water into the backwash pipe 112, start the air compressor 13, and inject air into the air intake pipe 114; water and air enter the filter from the backwash pipe 112 and the air intake pipe 114 respectively The water flows through the surface of the fiber bundle 117 to form a scouring effect, and the air bubbles adhere to the fiber surface, producing a stripping effect. The water-gas mixed fluid further enters the interior of the fiber bundle, accelerating the desorption and scouring of particulate matter. At the same time, the PLC controller controls the vibration mechanism of the movable orifice plate 119 to start, and through hydraulic drive or spring loading, the orifice plate generates a vibration with a frequency of 1 to 3 Hz to enhance the cleaning effect. In this process, the flow rate of the water pump 12 and the air pressure of the air compressor 13 are adjusted to ensure that the water-gas mixing ratio is between 1:10 and 1:20; the water-gas flow rate is monitored by the flow meter and the air pressure sensor, and real-time feedback is sent to the PLC for adjustment; when the cleaning is completed, the PLC issues a command to close the electric control valve on the backwash pipeline 112, close the electric control valve on the air intake pipeline 114, stop the operation of the water pump 12 and the air compressor 13, and the filter switches back to normal filtration mode.

[0077] Optionally, the PLC control cabinet 3 includes: a PLC controller, a signal interface device, and an HMI interface;

[0078] The PLC controller includes a CPU module, an I / O module, and a communication module, which are used to receive the sensor signal, execute the control logic, and output the control signal;

[0079] The signal interface device connects the signal of the external device to the PLC controller;

[0080] The HMI interface is used to access the HMI signal.

[0081] In one possible implementation, the CPU module communicates with the I / O module via an internal bus, collects input signals and sends output signals, and interacts with the communication module via an internal interface to achieve data communication with external devices.

[0082] Example 2

[0083] Figure 4 A flowchart of a high-speed filtration method with intelligent cleaning function provided in an embodiment of the present application includes:

[0084] S1 filtration stage: Raw water is introduced through the filter's inlet pipe. The water flows through the fiber bundle filter material to remove suspended particles and impurities. The purified water is discharged from the outlet pipe. During the filtration process, sensors collect real-time operating parameters in the filter, including pressure difference and water flow rate.

[0085] S2 intelligent cleaning triggering stage: using the PLC controller to trigger the cleaning mode according to the internal operating parameters of the filter collected by the sensor;

[0086] S3 cleaning mode selection stage: When the pressure difference collected by the sensor is less than 0.05MPa or the collected water flow is less than 50-70% of the preset water flow, the forward wash water-air mixed cleaning mode is triggered, the control valve on the forward wash pipe is opened, the control valve on the intake pipe is opened, and water and air are injected; when the pressure difference collected by the sensor is greater than 0.05MPa or the collected water flow is greater than 50-70% of the preset water flow, the backwash water-air mixed cleaning mode is triggered, the control valve on the backwash pipe is opened, the control valve on the intake pipe is opened, and water and air are injected;

[0087] S4 cleaning process stage: Open the control valve of the corresponding cleaning mode, start the water pump and air compressor, and inject water and air into the filter to form a water-air mixture to flush the filter layer; use the PLC to monitor the cleaning process parameters in real time and adjust the cleaning intensity and duration;

[0088] S5 filtration recovery stage: After cleaning is completed, the control valve is closed and the filter resumes normal operation.

[0089] Optionally, the PLC controller monitors the pressure difference change and flow recovery during the cleaning process in real time, and automatically ends the cleaning when the pressure difference recovers to below 0.02 MPa or the flow recovers to more than 85% of the normal flow.

[0090] The beneficial effects of the embodiments of the present application are as follows:

[0091] The present application provides a high-speed filtration device and method with an intelligent cleaning function, which can monitor the operating parameters inside the filter in real time through sensors. Combined with the intelligent algorithm of the PLC controller, it can trigger the cleaning mode according to the monitoring data and flexibly select the forward wash, backwash or vibration enhancement mode. This dynamic adjustment method effectively avoids the problems of excessive cleaning or insufficient cleaning that may be caused by traditional timed cleaning methods. At the same time, the device integrates a PLC controller and an HMI (human-machine interface) to achieve real-time display of the filter's operating status, automatic triggering of the cleaning mode, and efficient management of operation records, which greatly reduces the frequency of manual intervention and improves the automation level of the system. In addition, the use of fiber bundles as filter media, combined with water-gas mixing cleaning technology, not only significantly improves the filtration accuracy, but also effectively enhances the dirt removal efficiency, fully meeting the needs of efficient and stable filtration.

[0092] In the several embodiments provided in this application, it should be understood that the disclosed systems, modules and methods can be implemented in other ways. For example, the module embodiments described above are merely illustrative. For example, the division of units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of modules or units, which can be electrical, mechanical or other forms.

[0093] The above embodiments are intended only to illustrate the technical solutions of the present application and are not intended to limit them. The present application is not limited to the precise structures described above and illustrated in the accompanying drawings, and it cannot be assumed that the specific implementation of the present application is limited to these descriptions. For those skilled in the art of the present application, any changes and modifications made without departing from the concept of the present application should be deemed to fall within the scope of protection of the present application.

Claims

1. A high-speed filtering device with intelligent cleaning function, characterized in that: include: Filter (1), sensor (2), PLC control cabinet (3), human-machine interface HMI (4); The sensor (2) is connected to the filter (1) and is used to collect operating parameters in the filter (1); The PLC control cabinet (3) is connected to the sensor (2) and is used to process the signal of the sensor (2) and trigger different cleaning modes according to set logic; The HMI (4) is installed on the PLC control cabinet (3) and is used to display the operating status and operation cleaning mode.

2. The high-speed filtering device according to claim 1, characterized in that: The filter comprises: a tank (11), an air compressor (13), and a water pump (12); The air compressor (13) is connected to the PLC control cabinet (3) and the air inlet pipe (114) of the tank body (11) to provide an air source for water-gas mixed cleaning; The water pump (12) is connected to the tank body (11) and the PLC control cabinet (3) to provide required water flow power.

3. The high-speed filtering device according to claim 2, characterized in that: The tank body (11) comprises: a water inlet pipe (111), a water outlet pipe (115), a forward wash pipe (113), a backwash pipe (112), an air inlet pipe (114), an air outlet pipe (116), a fiber bundle (117), a fixed orifice plate (118), and a movable orifice plate (119); The air intake pipe (114) is connected to the air compressor (13); The water inlet pipe (111), the forward wash pipe (113), the backwash pipe (112), and the air inlet pipe (114) are provided with a control valve (121), and the control valve is connected to the PLC control cabinet (3) and is used to control the opening and closing of the pipeline; The upper and lower parts of the tank body (11) are provided with a fixed orifice plate (118) and a movable orifice plate (119), and the inner wall of the tank body is sprayed with an anti-corrosion material; A fiber bundle (117) is connected between the fixed orifice plate (118) and the movable orifice plate (119), and the fiber bundle (117) is connected to the fixed orifice plate (118) and the movable orifice plate (119) via a hook; The water inlet pipe (111) and the water outlet pipe (115) are used for filtering water; the forward wash pipe (111) is used for cleaning the fiber bundle (117); the backwash pipe (112) is used for cleaning the fiber bundle (117); the air inlet pipe (114) and the air outlet pipe (116) are used for inputting and exhausting air; and the fiber bundle (117) is used for filtering impurities.

4. The high-speed filtering device according to claim 3, characterized in that: The tank body (11) further comprises: The fiber bundle (117) is made of corrosion-resistant and highly wear-resistant material, and is coated with an anti-pollution coating on the surface; the movable orifice plate (119) has a movable mechanism (120) that can generate vibration; and the hook is a snap-on type or a rotation locking type hook.

5. The high-speed filtering device according to claim 1, characterized in that: The sensor (2) includes a pressure sensor and a flow sensor; The pressure sensor is located on the water inlet pipe (111) and the water outlet pipe (115) of the filter and is used to collect the pressure in the filter (1); The flow sensor is located on the water outlet pipe (115) of the filter and is used to collect the water output of the filter (1).

6. The high-speed filtering device according to claim 1, characterized in that: The PLC control cabinet provides two cleaning modes, including: forward washing water-gas mixed cleaning mode and backwashing water-gas mixed cleaning mode, wherein the air-water ratio of the water-gas mixed cleaning is 1:10-1:20; The movable orifice plate (119) of the filter tank body vibrates during the cleaning process, and cooperates with the water-gas mixture to clean the fiber bundle (117) of the filter tank body.

7. The high-speed filtering device according to claim 6, characterized in that: The two cleaning modes include: When the pressure difference collected by the sensor (2) is less than 0.05 MPa or the collected water flow rate is less than 50-70% of the preset water flow rate, the forward wash water-air mixed cleaning mode is triggered, the control valve (121) on the forward wash pipe (111) is opened, the control valve (121) on the air intake pipe (114) is opened, and water and air are injected; When the pressure difference collected by the sensor (2) is greater than 0.05 MPa or the collected water flow rate is greater than 50-70% of the preset water flow rate, the backwash water-gas mixed cleaning mode is triggered, the control valve (121) on the backwash pipe (112) is opened, the control valve (121) on the air intake pipe (114) is opened, and water and air are injected.

8. The high-speed filtering device according to claim 1, characterized in that: The PLC control cabinet 3 includes: a PLC controller, a signal interface device, and an HMI interface; The PLC controller includes a CPU module, an I / O module, and a communication module, which are used to receive the sensor signal, execute the control logic, and output the control signal; The signal interface device connects the signal of the external device to the PLC controller; The HMI interface is used to access the HMI signal.

9. A high-speed filtering method with intelligent cleaning function, using the high-speed filtering device according to any one of claims 1 to 8, characterized in that: include: Filtration stage: raw water is introduced through the filter’s water inlet pipe, the water flows through the fiber bundle filter material to remove suspended particles and impurities, and the purified water is discharged from the water outlet pipe; During the filtration process, the operating parameters in the filter, including the pressure difference and the water flow rate, are collected in real time through sensors; Intelligent cleaning triggering stage: using the PLC controller to trigger the cleaning mode according to the internal operating parameters of the filter collected by the sensor; Cleaning mode selection stage: when the pressure difference collected by the sensor is less than 0.05MPa or the collected water flow is less than 50-70% of the preset water flow, the forward wash water-gas mixed cleaning mode is triggered, the control valve on the forward wash pipe is opened, the control valve on the intake pipe is opened, and water and air are injected; when the pressure difference collected by the sensor is greater than 0.05MPa or the collected water flow is greater than 50-70% of the preset water flow, the backwash water-gas mixed cleaning mode is triggered, the control valve on the backwash pipe is opened, the control valve on the intake pipe is opened, and water and air are injected; Cleaning process stage: open the control valve of the corresponding cleaning mode, start the water pump and air compressor, inject water and air into the filter to form a water-air mixture to flush the filter layer; monitor the cleaning process parameters in real time through PLC, and adjust the cleaning intensity and duration; Filtration recovery phase: After cleaning is completed, close the control valve and the filter resumes normal operation.

10. The high-speed filtering method according to claim 9, characterized in that: The PLC controller monitors the pressure difference change and flow recovery during the cleaning process in real time, and automatically ends the cleaning when the pressure difference recovers to below 0.02MPa or the flow recovers to more than 85% of the normal flow.

Images