Self-cleaning filter station and control method for self-cleaning filter station

Abstract

The invention provides a self-cleaning filtering station and a control method for the self-cleaning filtering station, the self-cleaning filtering station comprises at least one filtering unit, the filtering unit comprises a filter, the filter is connected with a liquid inlet pipeline, a liquid outlet pipeline, a flushing pipeline and a blow-off pipeline, the liquid inlet pipeline is provided with a liquid inlet valve, and the liquid outlet pipeline is provided with a liquid outlet valve. A flushing valve is arranged on the flushing pipeline, a blow-down valve is arranged on the blow-down pipeline, and the self-cleaning filtering station performs filtering or flushing operation by controlling the liquid inlet valve, the flushing valve and the blow-down valve. According to the embodiment of the invention, the automatic filtering and flushing operation of the filtering system can be realized, and the functions of automatic monitoring, automatic data uploading and the like can also be realized, so that the service life of the filter element can be effectively prolonged, and the optimal filtering effect of the filter element can be kept.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of filtering devices, and in particular, to a self-cleaning filtering station and a control method for the same. BACKGROUND

[0002] Emulsion filtering is a key link of integrated liquid supply system, and the filtering station is one of the important equipment for emulsion filtering, which is used to ensure the cleanliness of emulsion in the hydraulic system.

[0003] At present, the filtering station has the following problems, for example, the filtering station still needs to be manually cleaned, and the filtering station with automatic cleaning function cannot achieve good cleaning effect; the flushing valve in the filtering station is generally selected as an electromagnetic pilot valve, which requires flushing hydraulic pressure, relies on high-pressure liquid driving, and has limited use scenarios, and cannot be dynamically adjusted; the cleaning time of the filtering station cannot be dynamically adjusted, which may cause waste due to long-time flushing of the new filtering station, and the old filtering station cannot achieve flushing effect due to insufficient flushing time; the pressure difference flushing function of the filtering station is often triggered at the moment of starting and stopping of the filtering station, and when the filtering effect cannot be restored after pressure difference flushing, the pressure difference backflushing is triggered again, which causes frequent flushing, emulsion waste, and affects the use of liquid on the working surface. SUMMARY

[0004] Therefore, the present disclosure aims to provide a self-cleaning filtering station and a control method for the same to solve the technical problems of manual cleaning, inability to dynamically adjust flushing hydraulic pressure and flushing time in the prior art.

[0005] One purpose of an embodiment of the present disclosure is to provide a self-cleaning filtering station, which comprises at least one filtering unit, the filtering unit comprising a filter, the filter being connected to a liquid inlet pipeline, a liquid outlet pipeline, a flushing pipeline and a blowdown pipeline, respectively, a liquid inlet valve being arranged on the liquid inlet pipeline, a flushing valve being arranged on the flushing pipeline, and a blowdown valve being arranged on the blowdown pipeline, the self-cleaning filtering station performing filtering or flushing operation by controlling the liquid inlet valve, the flushing valve and the blowdown valve.

[0006] In some embodiments, the liquid inlet valve and the flushing valve are electric ball valves.

[0007] In some embodiments, the filtering unit is a plurality of filtering units, one of which is in a flushing state, and the others perform filtering operation.

[0008] In some embodiments, the control device is further connected with a remote host, the liquid inlet valve, the flushing valve and the blowdown valve are connected with the control device, a liquid inlet pressure sensor is arranged on the liquid inlet pipeline, a liquid outlet pressure sensor is arranged on the liquid outlet pipeline, and a flushing liquid pressure sensor is arranged on the flushing pipeline, and the control device is connected with the liquid inlet pressure sensor, the liquid outlet pressure sensor and the flushing pressure sensor.

[0009] In some embodiments, a first angle sensor and a second angle sensor are further connected, the first angle sensor is arranged in the liquid inlet valve, and the second angle sensor is arranged in the flushing valve.

[0010] An object of the embodiments of the present disclosure is to provide a control method for a self-cleaning filter station, the self-cleaning filter station being any one of the self-cleaning filter stations described above, comprising:

[0011] In response to a filter control signal, the flushing valve and the blowdown valve are closed and the liquid inlet valve is opened, and the opening value of the liquid inlet valve is adjusted for a filter operation.

[0012] In response to a flushing control signal, the liquid inlet valve is controlled to be closed and the blowdown valve and the flushing valve are controlled to be opened for a flushing operation.

[0013] In some embodiments, the flushing operation includes a timed flushing operation or a pressure differential flushing operation.

[0014] In some embodiments, the timed flushing includes:

[0015] The flushing frequency and the flushing time length of the timed flushing are determined according to the designed service life of the filter element, the accumulated total filter time length and the inlet and outlet liquid pressure difference.

[0016] In some embodiments, the pressure differential flushing includes:

[0017] Whether the self-cleaning filter station enters a stable filter state is determined by judging whether the opening value of the liquid inlet valve reaches a predetermined value and combining the inlet and outlet pressure values, if the self-cleaning filter station enters the stable filter state;

[0018] The inlet and outlet liquid pressure difference is obtained based on the inlet liquid pressure value and the outlet liquid pressure value.

[0019] When the inlet and outlet liquid pressure difference is greater than a preset threshold value, and the time interval from the last flushing is greater than a minimum time interval of the pressure differential flushing, the pressure differential flushing operation is controlled to be performed.

[0020] In some embodiments, the control method further comprises:

[0021] The effective inlet and outlet liquid pressure difference is obtained based on the inlet and outlet liquid pressure difference.

[0022] determining the differential pressure flushing minimum time interval according to the effective inlet-outlet hydraulic pressure difference.

[0023] The embodiments of the present disclosure can realize automatic filtering and flushing operation of the filtering system, and can also realize automatic monitoring and automatic data uploading, thereby effectively prolonging the service life of the filter element and maintaining the best filtering effect.

[0024] In order to make the above objectives, characteristics and advantages of the present disclosure more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0025] In the drawings, which are not necessarily drawn to scale, like numerals can describe similar components throughout the several views. Like numerals having different letter suffixes can represent different instances of similar components. The drawings illustrate generally, by way of example, various embodiments discussed herein, and are not intended to limit the disclosure to the embodiments depicted. The same or similar reference numerals can be used to denote the same or similar parts in all the drawings. Such embodiments are illustrative, and not intended to be exhaustive or limiting of the present devices and methods. The drawings herein are used to provide an understanding of the disclosure, and are not intended to limit the disclosure. In the drawings:

[0026] Figure 1 is a schematic diagram of the arrangement of a self-cleaning filtering station provided by the present disclosure;

[0027] Figure 2 is a schematic diagram of the arrangement of a self-cleaning filtering station provided by the present disclosure;

[0028] Figure 3 is a schematic diagram of the steps of a control method for a self-cleaning filtering station provided by the present disclosure;

[0029] Figure 4 is a schematic diagram of the steps of a control method for a self-cleaning filtering station provided by the present disclosure;

[0030] The above drawings include the following reference numerals:

[0031] 1 - filter; 2 - inlet valve; 3 - inlet pressure sensor; 4 - outlet pressure sensor; 5 - flushing pressure sensor; 6 - flushing valve; 7 - blowdown valve; 10 - control device; 20 - remote host; 11 - first angle sensor; 12 - second angle sensor. DETAILED DESCRIPTION

[0032] Hereinafter, specific embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The present disclosure may, however, be embodied in many different forms, and should not be construed as being limited to the embodiments set forth herein. All

[0033] It is to be understood that various modifications can be made to the embodiments disclosed herein. Therefore, the above description should not be construed as limiting, but merely as exemplification of the embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the present disclosure.

[0034] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above, and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0035] These and other characteristics of the present disclosure will become more apparent from the following detailed description and the accompanying drawings, wherein:

[0036] It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, unless the contrary is clear from the context.

[0037] The above and other aspects, features, and advantages of the present disclosure will be more apparent from the following detailed description in conjunction with the accompanying drawings, when taken in combination with the accompanying claims.

[0038] Hereinafter, specific embodiments of the present disclosure will be described with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely examples of the present disclosure, which can be implemented in various ways. Well-known and / or redundant functions and structures are not described in detail to avoid obscuring the present disclosure needlessly. Accordingly, specific structural and functional details disclosed herein are not intended to be limiting, but are merely to be used as a basis for the claims and a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.

[0039] It is to be noted that the terms "first", "second", and the like, used in the description and the claims of the present disclosure, are used to differentiate between similar objects, and do not necessarily have to be used in the description in a particular order or sequence. It is to be understood that the terms used in this way can be interchanged, where appropriate, to allow the embodiments of the present disclosure described herein to be implemented in a sequence other than those illustrated or described herein. Also, the terms "comprise" and "have" and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or apparatus that comprises a list of steps or units is not necessarily limited to those steps or units that are clearly listed, but can include other steps or units not clearly listed or inherent to such processes, methods, products, or apparatuses.

[0040] The specification can use phrases such as, “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in at least one embodiment” to

[0041] one or more of the same or different embodiments.

[0042] A first embodiment of the present disclosure relates to a self-cleaning filter station with a control system, where the control system is suitable for the automatic control of various self-cleaning filter stations. As shown in the drawings, the self-cleaning filter station in this embodiment includes at least one filter unit, which includes a filter 1 connected to an inlet pipe, an outlet pipe, a flushing pipe, and a blowdown pipe, respectively. Here, the filter 1 is provided with a filter core, which has a predetermined design life. An inlet valve 2 and an inlet pressure sensor 3 are provided on the inlet pipe, an outlet pressure sensor 4 is provided on the outlet pipe, a flushing liquid pressure sensor 5 and a flushing valve 6 are provided on the flushing pipe, and a blowdown valve 7 is provided on the blowdown pipe. Figure 1 The inlet valve 2 and the flushing valve 6 here realize opening degree feedback through the self-provided angle sensor, to accurately control the opening degree of the inlet valve 2 and the flushing valve 6. The inlet valve 2 and the flushing valve 6 here can for example adopt an electric ball valve, which can flexibly control the water production, filtration efficiency, and flushing liquid inlet pressure and flow rate of the self-cleaning filter station by adjusting the opening degree, to achieve the best flushing effect. In particular, the flushing valve 6 here can adopt a dynamic adaptive control method, which can automatically adjust the opening degree of the flushing valve 6 according to different flushing pressures, to ensure that the flushing liquid has the best flushing pressure and flow rate.

[0043] In this embodiment, the combination of the three valve groups, i.e., the inlet valve 2, the flushing valve 6, and the blowdown valve 7, is used to realize the switching of the pipes to adapt to more types of filtration systems. Specifically, when the self-cleaning filter station is filtering emulsion, the inlet valve 2 is opened, and the flushing valve 6 and the blowdown valve 7 are closed; when the self-cleaning filter station is flushing, the inlet valve 2 is closed, and the flushing valve 6 and the blowdown valve 7 are opened.

[0044] The path of the self-cleaning filter station in this embodiment when normally filtering emulsion is inlet liquid → the inlet valve 2 → the inlet pressure sensor 3 → the filter 1 → the outlet pressure sensor 4 → outlet liquid; and the path when flushing is flushing liquid → the flushing liquid pressure sensor 5 → the flushing valve 6 → the filter 1 → the blowdown valve 7 → blowdown.

[0045]

[0046] ​The above embodiments illustrate the arrangement of individual filter units. The self-cleaning filter station generally includes multiple filter units, and while one of the filter units is in the rinsing state, the other filter units continue to perform filtration operations.

[0047] The embodiments disclosed herein can realize automatic filtration and rinsing operations of the filtration system, as well as automatic monitoring and automatic data uploading functions, thereby effectively improving the service life of the filter element and maintaining its optimal filtration effect.

[0048] The second embodiment of this disclosure provides a self-cleaning filter station, such as Figure 2 As shown, the difference from the above embodiment is that it also includes a control device 10. The liquid inlet valve 2, the flushing valve 6 and the drain valve 7 in the above embodiment are all connected to the control device 10. Here, the control device 10 is connected to the remote host 20.

[0049] In the above embodiments, the inlet pressure sensor 3, the outlet pressure sensor 4, and the flushing fluid pressure sensor 5 are all connected to the control device 10. The control device 10 is also connected to the first angle sensor 11 and the second angle sensor 12. Here, the first angle sensor 11 is located inside the inlet valve 2, and the second angle sensor 12 is located inside the flushing valve 6.

[0050] The control system described in this embodiment can collect data on inlet pressure, outlet pressure, flushing fluid pressure, and the opening degree of the inlet valve 2 and the flushing valve 6. Based on the collected data and the operation and maintenance data of the self-cleaning filter station, it controls the inlet valve 2, the flushing valve 6, and the drain valve 7 to perform actions, thereby realizing the self-cleaning control of the self-cleaning filter station. The system also uploads the operation data to the remote host 20, and the control parameters can be modified through the remote host 20 to remotely control the self-cleaning filter station to perform filtration or flushing operations.

[0051] When the self-cleaning filter station is filtering, its working process is as follows: the control device 10 controls the flushing valve 6 and the drain valve 7 to be in the closed state, then opens the liquid inlet valve 2 and controls the valve core of the liquid inlet valve 2 to rotate, and obtains the opening information of the liquid inlet valve 2 through the first angle sensor 11; it can also combine the collected liquid inlet pressure value to adaptively control the opening value of the liquid inlet valve 2 to ensure the filtration efficiency of the self-cleaning filter station.

[0052] When the self-cleaning filter station is flushed, the working process is as follows: the control device 10 sends a closing instruction of the liquid inlet valve 2, and after judging that the liquid inlet valve 2 is completely closed through the first angle sensor 11, the blowdown valve 7 is opened, a predetermined time is delayed, and after waiting for the liquid to be emptied, the control device 10 sends an opening instruction of the flushing valve 6, controls the flushing valve 6 to open to a specified position according to the flushing liquid inlet pressure value and the opening value of the flushing valve 6 obtained through the second angle sensor 12, and then completes the flushing operation based on the obtained flushing time, finally, the flushing valve 6 is closed and the blowdown valve 7 is closed after a predetermined time is delayed.

[0053] Further, the flushing operation herein, for example, includes the operation of timed flushing and pressure differential flushing, and the control signal of the timed flushing or the pressure differential flushing can be triggered manually by the user or automatically triggered by meeting the preset condition.

[0054] In addition, after the flushing is completed, the running state of the self-cleaning filter station can also be self-checked. If the filter element 2 reaches the predetermined design service life or the minimum time interval of the pressure differential flushing reaches the set value, the control device 10 alarms and prompts “please replace the filter element” and enters the standby state; if the above two conditions are not triggered, the control device 10 directly enters the standby state and waits to receive the next filtering or flushing instruction.

[0055] The embodiments of the present disclosure can realize automatic filtering and flushing operation of the filtering system, and can also realize automatic monitoring and automatic data uploading functions, so as to effectively improve the service life of the filter element and keep the best filtering effect.

[0056] A third embodiment of the present disclosure provides a control method for a self-cleaning filter station, which can be realized by the control device 10 of the above-mentioned embodiments, as shown in Figure 3 The control method comprises the following steps:

[0057] S101, in response to a filtering control signal, closing the flushing valve and the blowdown valve and opening the liquid inlet valve, and adjusting the opening value of the liquid inlet valve to perform filtering operation.

[0058] In this step, in response to a filtering control signal, the flushing valve and the blowdown valve are closed and the liquid inlet valve is opened, and the opening value of the liquid inlet valve is adjusted to perform filtering operation. Specifically, when the control device 10 sends a filtering control signal to perform filtering operation, the control device 10 controls the flushing valve 6 and the blowdown valve 7 to be in a closed state, and then controls the liquid inlet valve 2 to be opened and controls the valve core in the liquid inlet valve 2 to rotate.

[0059] Further, the real-time opening value of the liquid inlet valve 2 is acquired by the first angle sensor 11, and the feedback liquid inlet pressure value is acquired by the liquid inlet pressure sensor 11, so as to adaptively control and adjust the opening value of the liquid inlet valve 2, thereby ensuring the filtering efficiency of the self-cleaning filtering station.

[0060] S102, in response to the flushing control signal, the liquid inlet valve is controlled to be closed, and the blowdown valve and the flushing valve are controlled to be opened for flushing operation.

[0061] After the liquid inlet valve is opened and the opening value of the liquid inlet valve is adjusted for filtering operation in response to the filtering control signal in the above step S101, in this step, in response to the flushing control signal, the liquid inlet valve is controlled to be closed, and the blowdown valve and the flushing valve are controlled to be opened for flushing operation.

[0062] After the liquid inlet valve is opened and the opening value of the liquid inlet valve is adjusted for filtering operation in response to the filtering control signal in the above step S101, in this step, in response to the flushing control signal, the liquid inlet valve is controlled to be closed, and the blowdown valve and the flushing valve are controlled to be opened for flushing operation.

[0063] In combination with Figure 4 In this step, the operation of the timed flushing or the pressure differential flushing is performed after the filtering operation, and the control signal of the timed flushing or the pressure differential flushing can be triggered by manual operation of the user or automatically triggered by meeting the preset condition.

[0064] Specifically, in addition to the manual operation of the user, the flushing control signal can also be triggered by counting the cumulative filtering time of the self-cleaning filtering station after the last cleaning, and if the cumulative filtering time after the last cleaning is greater than a predetermined time interval, the flushing program is controlled to be entered, such as the timed flushing or the pressure differential flushing program.

[0065] On the one hand, specifically, in response to the timed flushing control signal, the flushing frequency and the flushing time for the timed flushing are calculated and determined according to the predetermined design life of the filter element in the filter 1 of the self-cleaning filtering station, the cumulative filtering total time, and the liquid inlet and outlet pressure difference after the timed flushing function is started.

[0066] Specifically, the control algorithm for the timed cleaning can automatically determine and adjust the flushing frequency and the flushing time according to the working and maintenance conditions of the self-cleaning filtering station. For example, the flushing frequency and the flushing time herein will increase with the use time of the filter element 1, and in addition, when the filter element reaches the design life, the control system needs to be reset after the filter element is replaced, and the flushing frequency and the flushing time for the timed flushing need to be recalculated. The determination method of the flushing time herein is also applicable to the pressure differential flushing.

[0067] On the other hand, the pressure differential backwash is performed in response to the pressure differential backwash control signal. When the pressure differential backwash is performed, it is first determined whether the self-cleaning filter station is in a stable filtration state. Specifically, it is determined whether the self-cleaning filter station is in a stable filtration state by determining whether the opening degree of the inlet valve 2 reaches a predetermined value and in combination with the inlet and outlet pressure values.

[0068] If the self-cleaning filter station is in a stable filtration state, the inlet and outlet pressure values are further collected, and the inlet and outlet pressure difference is obtained based on the inlet and outlet pressure values. When the inlet and outlet pressure difference is greater than a predetermined threshold value and the time interval from the last backwash is greater than the pressure differential backwash minimum time interval, the pressure differential backwash operation is controlled to be performed.

[0069] Further, the effective inlet and outlet pressure difference is obtained based on the inlet and outlet pressure difference. Here, the effective inlet and outlet pressure difference is obtained by filtering out abnormal pressure difference caused by fluctuations in the inlet pressure value, and the pressure differential backwash minimum time interval is calculated according to the effective inlet and outlet pressure difference. The pressure differential backwash minimum time interval decreases as the inlet and outlet pressure difference increases. The control algorithm of the pressure differential backwash is used to solve the problems of false triggering and frequent backwashing.

[0070] After the backwash control signal is received, the closing instruction of the inlet valve 2 is first sent, and the blowdown valve 6 is opened after the inlet valve 2 is completely closed, which can be determined by the first angle sensor 11.

[0071] The blowdown valve 6 is opened for a predetermined time and the liquid in the self-cleaning filter station is emptied, and the controller 10 sends a backwash valve opening instruction. Specifically, the backwash valve 7 is controlled to open to a predetermined position according to the backwash liquid pressure value and the backwash valve opening degree value obtained by the second angle sensor 12. The backwash time is obtained to complete the backwash of the self-cleaning filter station, and the backwash time is associated with the cumulative working time of the self-cleaning filter station, the inlet pressure of the backwash liquid, etc., so that real-time dynamic adjustment can be performed. Then the backwash valve 7 is closed and the blowdown valve 7 is closed after a predetermined time.

[0072] In addition, after the backwash is completed, the running state of the self-cleaning filter station can also be self-checked. If the filter element 2 reaches a predetermined design life or the pressure differential backwash minimum time interval reaches a set value, the control device 10 alarms and prompts "please replace the filter element" and enters a standby state. If the above two conditions are not triggered, the control device 10 directly enters a standby state and waits for the next filtering or backwash instruction.

[0073] Compared with the prior art, the control method of the self-cleaning filter station has the following advantages:

[0074] (1) The flush control valve and the double block valve used for pipeline switching are both pilot valves; in the embodiment, the combination of the liquid inlet valve, the flush valve and the blowdown valve is used to realize pipeline switching, wherein the liquid inlet valve and the flush valve are electric ball valves, and the blowdown valve is a direct-acting electromagnetic valve, so that accurate control can be realized for different steps;

[0075] (2) The flushing or stopping of flushing is performed based on the open or closed state of the flush valve during flushing; the flush valve in the embodiment is an electric ball valve, and the flushing liquid inlet pressure and the flushing liquid flow rate can be controlled by adjusting the ball valve opening degree to achieve the best flushing effect.

[0076] (3) The timing flushing function is realized by setting a flushing time interval; in the embodiment,

[0077] The timing flushing function is realized by setting an effective filtration working time for timing flushing, so that the operation is more reasonable and convenient.

[0078] (4) The cleaning time for cleaning is a preset time length; in the embodiment, a fixed parameter is not used, and the cleaning time is associated with the cumulative working time of the self-cleaning filtration station, the flushing liquid inlet pressure and other parameters, and is dynamically adjusted in real time.

[0079] The embodiment of the disclosure can realize automatic filtration and flushing operation of the filtration system, and can also realize automatic monitoring and data automatic uploading functions, so that the service life of the filter core can be effectively improved, and the best filtration effect can be maintained.

[0080] Based on the same inventive concept, a fourth embodiment of the disclosure provides a control device for a self-cleaning filtration station, the control device comprising a filtration control module and a flushing control module coupled to each other, wherein:

[0081] The filtration control module is configured to close the flush valve and the blowdown valve and open the liquid inlet valve in response to a filtration control signal, and adjust the opening degree value of the liquid inlet valve to perform filtration operation.

[0082] The flushing control module is configured to control the liquid inlet valve to be closed and the blowdown valve and the flush valve to be opened to perform flushing operation in response to a flushing control signal.

[0083] The embodiment of the disclosure can realize automatic filtration and flushing operation of the filtration system, and can also realize automatic monitoring and data automatic uploading functions, so that the service life of the filter core can be effectively improved, and the best filtration effect can be maintained.

[0084] The fifth embodiment of the present disclosure provides a storage medium, which is a computer readable medium, and stores a computer program. The computer program is executed by a processor to implement the method provided by the third embodiment of the present disclosure, and includes the following steps S11-S12:

[0085] S11, in response to a filter control signal, closing a flushing valve and a blowdown valve and opening an inlet valve, and adjusting an opening degree value of the inlet valve to perform a filtering operation;

[0086] S12, in response to a flushing control signal, controlling the inlet valve to be closed and opening the blowdown valve and the flushing valve to perform a flushing operation.

[0087] Further, the computer program is executed by the processor to implement other methods provided by the third embodiment of the present disclosure.

[0088] The embodiments of the present disclosure can realize automatic filtering and flushing operations of the filtering system, and can also realize automatic monitoring and automatic uploading of data, thereby effectively improving the service life of the filter element and keeping the best filtering effect.

[0089] The sixth embodiment of the present disclosure provides an electronic device, which includes at least a memory and a processor. The memory stores a computer program, and the processor implements the method provided by any embodiment of the present disclosure when executing the computer program on the memory. For example, the computer program of the electronic device includes the following steps S21-S22:

[0090] S11, in response to a filter control signal, closing a flushing valve and a blowdown valve and opening an inlet valve, and adjusting an opening degree value of the inlet valve to perform a filtering operation;

[0091] S12, in response to a flushing control signal, controlling the inlet valve to be closed and opening the blowdown valve and the flushing valve to perform a flushing operation.

[0092] Further, the processor also executes the computer program in the fourth embodiment.

[0093] The embodiments of the present disclosure can realize automatic filtering and flushing operations of the filtering system, and can also realize automatic monitoring and automatic uploading of data, thereby effectively improving the service life of the filter element and keeping the best filtering effect.

[0094] The storage medium can be included in the electronic device, or can exist separately and not be assembled into the electronic device.

[0095] It should be noted that the storage medium in the present disclosure can be a computer readable signal medium or a computer readable storage medium or any combination of the above two. The computer readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination of the above. More specific examples of the computer readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or apparatus. In the present disclosure, the computer readable signal medium can include a data signal carried in a baseband or as a part of a carrier wave, which carries computer readable program code. Such a propagated data signal can take various forms, including but not limited to an electromagnetic signal, an optical signal or any suitable combination of the above. The computer readable signal medium can also be any storage medium other than the computer readable storage medium, which can send, propagate or transmit a program for use by or in conjunction with an instruction execution system, device or apparatus. The program code contained in the storage medium can be transmitted by any suitable medium, including but not limited to a wire, a cable, a RF (radio frequency) or the like, or any suitable combination of the above.

[0096] The flow diagrams and block diagrams in the drawings are schematic illustrations of possible architectures, functions and operations of systems, methods and computer program products in accordance with various embodiments of the present disclosure. In this regard, each block in the flow diagrams and block diagrams can represent a module, a segment, or a portion of code, which comprises one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or the blocks may, in fact, be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and / or flow diagrams, and combinations of blocks in the block diagrams and / or flow diagrams, can be implemented by special purpose hardware-based systems that perform the specified functions or operations, or combinations of special purpose hardware and computer instructions.

[0097] The units described in the embodiments of this disclosure can be implemented in software or hardware. The names of the units are not, in some cases, intended to limit the specific unit.

[0098] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0099] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0100] The above description is merely a preferred embodiment of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features disclosed in this disclosure that have similar functions.

[0101] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. In certain environments, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this disclosure. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0102] Although the subject matter has been described in language specific to structural features and / or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

[0103] The above detailed description sets forth numerous specific details of the present disclosure. However, it is contemplated that not all of these specific details are disclosed in order to provide a thorough understanding of the present disclosure. Rather, the present disclosure can be practiced with or without the specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail since it is well understood that persons of ordinary skill in the art are already very familiar with same.

Claims

1. A self-cleaning filter station, characterized in that, The system includes at least one filtration unit, which includes a filter. The filter is connected to an inlet pipe, an outlet pipe, a flushing pipe, and a drain pipe. An inlet valve is installed on the inlet pipe, a flushing valve is installed on the flushing pipe, and a drain valve is installed on the drain pipe. The self-cleaning filtration station performs filtration or flushing operations by controlling the inlet valve, the flushing valve, and the drain valve.

2. The self-cleaning filter station according to claim 1, characterized in that, The inlet valve and the flushing valve are electric ball valves.

3. The self-cleaning filter station according to claim 1, characterized in that, There are multiple filter units, and when one of the filter units is in the rinsing state, the other filter units perform the filtration operation.

4. The self-cleaning filter station according to claim 1, characterized in that, It also includes a control device, which is connected to a remote host. The inlet valve, the flushing valve, and the drain valve are all connected to the control device. An inlet pressure sensor is installed on the inlet pipe, an outlet pressure sensor is installed on the outlet pipe, and a flushing pressure sensor is installed on the flushing pipe. The control device is connected to the inlet pressure sensor, the outlet pressure sensor, and the flushing pressure sensor.

5. The self-cleaning filter station according to claim 4, characterized in that, It also includes a first angle sensor and a second angle sensor connected together, with the first angle sensor located inside the liquid inlet valve and the second angle sensor located inside the flushing valve.

6. A control method for a self-cleaning filter station, wherein the self-cleaning filter station is any one of claims 1-5, characterized in that, include: In response to the filtration control signal, the flushing valve and drain valve are closed and the inlet valve is opened, and the opening value of the inlet valve is adjusted to perform the filtration operation; In response to the flushing control signal, the inlet valve is closed and the drain valve and flushing valve are opened to perform the flushing operation.

7. The control method according to claim 6, characterized in that, The rinsing operation includes timed rinsing or differential pressure rinsing.

8. The control method according to claim 7, characterized in that, The timed flushing includes: The flushing frequency and flushing duration are determined based on the design life of the filter element, the total cumulative filtration time, and the pressure difference between the inlet and outlet liquids.

9. The control method according to claim 7, characterized in that, The differential pressure flushing includes: The self-cleaning filter station is judged to have entered a stable filtration state by checking whether the opening value of the inlet valve reaches a predetermined value and combining the inlet and outlet pressure values. If the self-cleaning filter station enters a stable filtration state. The pressure difference between inlet and outlet liquids is obtained based on the inlet and outlet pressure values. When the pressure difference between the inlet and outlet liquids is greater than a preset threshold, and the time interval between the last flush and the last flush is greater than the minimum time interval for differential pressure flushing, differential pressure flushing operation is controlled to be performed.

10. The control method according to claim 9, characterized in that, Also includes: The effective inlet and outlet pressure difference is obtained based on the inlet and outlet pressure difference. The minimum time interval for differential flushing is determined based on the effective inlet and outlet liquid pressure difference.

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