Blockage removal type filtering device and detection method

Abstract

The invention relates to the technical field of filtering devices, and particularly discloses a blockage removal type filtering device and a detection method. The filtering device comprises a filtering pipeline, a blockage removing assembly and a detection assembly; the blockage removing assembly is used for conducting blockage removing operation on the filtering pipeline, and the detection assembly is used for monitoring the pressure, the working duration and the liquid flow state of the filtering pipeline in real time. The filter screen covers the filter screen through the ultrasonic blockage removal unit, so that filter residues on the filter screen are removed through kinetic energy generated by bubble breakage. The detection method comprises the following steps: after the filtering device starts working, the detection assembly detects working information of the filtering pipeline; matching is conducted according to the filtering operation information and a preset blockage removal threshold value, and if matching succeeds, blockage removal operation is started; and if the matching fails, continuing the detection operation. By means of multiple monitoring means, it is ensured that stable operation is still achieved under the condition that part of assemblies are disabled, system shutdown caused by faults of a single detection assembly is avoided, and the efficiency of blockage removal operation is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of filter devices, and in particular to a blockage-removing filter device and a detection method. Background Art

[0002] In the current natural gas purification plant, wet desulfurization units, wet dehydration units and tail gas treatment units generally use chemical solvent absorption to purify process gases. In this process, the solution circulation system will inevitably be affected by various factors, resulting in solution contamination. Specifically, due to the erosion and corrosion of the pipeline during long-term use, the activated carbon particles may be pulverized, and the upstream raw gas may carry solid particles during transportation. These factors will affect the purity of the solution. As the degree of solution contamination increases, more foam will be generated in the solution. The increase in this foaming tendency will seriously affect the stable operation of the purification / filtration device. In order to ensure that the purification / filtration device can work continuously and stably, effective measures must be taken to reduce solution contamination, thereby reducing the foaming tendency and ensuring the smooth progress of the entire purification / filtration process. In actual application, especially in the operation of large-scale filtration plants, the manual replacement or cleaning of the filter is particularly arduous and time-consuming. This process not only requires a lot of manpower, but also the filtration system often needs to be temporarily stopped during these operations, resulting in a significant decrease in filtration efficiency. This inefficient working method not only wastes valuable labor resources, but also has a negative impact on the production efficiency and economic benefits of the entire filtration plant.

[0003] The patent "Filter Assembly and Method for Detecting Dirty and Blocked Filters" (publication number CN111111342B, hereinafter referred to as prior art 1) discloses a method for detecting dirty filters. The filter assembly in prior art 1 includes a filter, an induced draft fan and a current sensor. The current sensor is used to detect the current of the induced draft fan to determine whether the filter needs to be cleaned. The filter has a first end face and a second end face. The first end face is opposite to the induced draft fan, and the second end face is opposite to the air inlet of the air duct. In addition, the filter assembly also includes a first pressure sensor and a flow sensor. The method for detecting dirty and blocked filters of the filter assembly includes setting a preset current value of the induced draft fan, detecting the current of the induced draft fan, comparing the detected current value with the preset current value set in the control system, and cleaning the filter when the detected current value is greater than or equal to the preset current value.

[0004] Although the prior art 1 can identify whether the filter component is clogged by dirt through a specific detection component and detection method, this technology cannot perform effective blockage removal or unblocking operations based on the degree of dirt and blockage detected further. In addition, in the prior art 1, the detection method is relatively single, and when it is applied to a poor environmental condition, the detection component may fail due to the influence of environmental factors, resulting in the loss of its detection function. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides a blockage removal type filtering device and a detection method, so as to solve the problem in the prior art that an automatic blockage removal or unblocking operation cannot be performed according to the dirty blockage phenomenon detected by the detection component.

[0006] In the first aspect, an embodiment of the present invention provides a blockage-removing filter device, comprising a filter pipe and a blockage-removing component and a detection component arranged on the filter pipe; the blockage-removing component is used to perform blockage-removing operations on the filter pipe, and the detection component is used to detect the pressure, working time and liquid flow state of the filter pipe; the interior of the filter pipe is hollow to form a filter cavity; a filter screen is arranged in the filter cavity in the same direction as the flow direction of the filter pipe; a first pipe and a second pipe connected to the filter pipe are respectively arranged on the filter pipe; the blockage-removing component comprises an ultrasonic blockage-removing unit, the ultrasonic blockage-removing unit is arranged on the filter pipe, and covers the filter screen in the direction in which the filter screen is arranged in the filter pipe; when the ultrasonic blockage-removing unit is in operation, bubbles are generated in the liquid in the filter cavity, and the kinetic energy generated by the bursting of the bubbles causes the filter residue attached to the filter screen to fall off.

[0007] Preferably, the ultrasonic declogging unit comprises a control unit and a plurality of ultrasonic transmitters; the ultrasonic transmitter is connected to the control unit via a line; and the plurality of ultrasonic transmitters are arranged on the filter pipe at preset angles and intervals.

[0008] Preferably, the blocking removal assembly further comprises an adsorption blocking removal unit; the adsorption blocking removal unit delivers a conduit into the filter cavity via a coupling; the conduit is provided with a plurality of suction nozzles arranged at preset angles and intervals;

[0009] The coupling is connected to a driving device arranged outside the filter pipe. When the adsorption and declogging unit is in operation, the conduit performs reciprocating linear motion in the filter cavity, and the filter residue is adsorbed into the filter residue cavity arranged in the filter pipe through the suction nozzle.

[0010] Preferably, the blockage removal assembly further comprises a compressed air blockage removal unit; the compressed air blockage removal unit comprises an air compressor and a compressed air pipe for communicating with the filter chamber.

[0011] Preferably, a third pipe is also provided on the filter pipe; a control box is provided on the third pipe; a control circuit is provided in the control box; the ultrasonic deblocking unit, the adsorption deblocking unit and the compressed air deblocking unit are all connected to the control circuit, and the deblocking operation is performed according to the control of the control circuit.

[0012] In a second aspect, a detection method is provided, comprising: the detection component detecting filtering operation information of the filtering pipeline after the filtering device starts to operate;

[0013] The filtering operation information includes pipeline pressure information and / or pipeline working time information and / or liquid flow information;

[0014] Matching the detected filtering operation information with the corresponding blocking removal threshold;

[0015] If the filtering operation information successfully matches the corresponding blocking removal threshold, the blocking removal component performs blocking removal operation on the filtering pipeline;

[0016] If the filtering operation information fails to match the corresponding blocking removal threshold, the detection component continues to detect the filtering operation information;

[0017] When the blocking removal component performs blocking removal operation on the filter pipe, the detection component stops the detection operation;

[0018] When the unblocking operation is completed, the detection component restarts the detection operation.

[0019] Preferably, the detection component detects the filtering operation information of the filtering pipeline after the filtering device starts to operate; including at least one of the following methods:

[0020] The detection component detects the flow difference between two adjacent moments of the second pipeline using a flow monitor after the filtering device starts to operate;

[0021] The detection component detects the flow difference between the first pipeline and the second pipeline using a flow monitor after the filter device starts to operate;

[0022] The detection component detects the pressure difference between the first pipeline and the second pipeline using a pressure sensor after the filter device starts to operate;

[0023] The detection component uses a timer to detect the working time of the filter pipeline after the filter device starts working.

[0024] Preferably, the detection component uses a flow monitor to detect the flow difference between two adjacent moments in the second pipeline after the filtering device starts to operate, including:

[0025] Using the flow monitor to detect the flow rate f1 of the second pipeline at time t1;

[0026] Using the flow monitor to detect the flow rate f2 of the second pipeline at time t2;

[0027] Compare the flow difference |f2-f1| between the two moments with the flow difference blocking removal threshold threshold1 corresponding to the flow difference;

[0028] If the flow difference |f2-f1| is greater than or equal to the flow difference blocking threshold threshold1, the match is successful.

[0029] Preferably, the detection component uses a pressure sensor to detect the pressure difference between the first pipeline and the second pipeline after the filter device starts to operate, including:

[0030] Using the pressure sensor to detect the pipe mouth pressure p1 of the first pipe;

[0031] Using the pressure sensor to detect the orifice pressure p2 of the second pipeline;

[0032] Compare the pressure difference |p2-p1| between the first pipeline and the second pipeline with a pressure difference blocking removal threshold threshod2 corresponding to the pressure difference;

[0033] If the pressure difference |p2-p1| between the first pipeline and the second pipeline is greater than the pressure difference blocking threshold threshod2, the match is successful.

[0034] Preferably, the detection component uses a timer to detect the working time of the filter pipeline after the filter device starts working, including:

[0035] The timer is used to record the time t when the filtering pipeline starts to operate. start The value of

[0036] The time t at which the operation starts start The value of plus the standard operation time h of the filter;

[0037] The time t at which the operation starts start The value after adding the standard operation time h of the filter is compared with the working time blocking threshold threshod3 corresponding to the working time;

[0038] If the time t at which the operation starts start If the value after adding the standard operation time h of the filter is greater than or equal to the working time blocking threshold threshod3, the match is successful;

[0039] The standard operation time h is updated by the blockage coefficient α after each unblocking operation on the filter pipe; when the operation starts at the time t start Add the updated filter standard operation time h new The value is less than the minimum standard working time h min After that, according to the minimum standard working time h min Carry out blockage removal operations at intervals.

[0040] The blockage-removing filter device provided by the present invention has the following beneficial effects:

[0041] The filtering device in the present invention cleans the filter screen through an ultrasonic deblocking unit, which can effectively remove the filter residue attached to the filter screen. This method uses the kinetic energy generated by the rupture of bubbles to clean the filter screen without direct contact, reduce mechanical loss, improve the efficiency of the deblocking operation, and complete the automatic deblocking operation. The device can also monitor the status of the filtering operation from different angles by setting up multiple detection components (such as flow monitors, pressure sensors, and timers, etc.). Even if some detection components are damaged due to environmental factors (such as high humidity and low temperature), other components can continue to work, thereby avoiding system shutdowns caused by single point failures. The detection component can monitor the pressure, working time and flow status of the filter pipeline in real time, and determine whether deblocking is needed by comparing with the preset deblocking threshold. This automated workflow reduces manual intervention and improves the accuracy and efficiency of operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following is a brief introduction to the drawings required for use in the embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the present invention.

[0043] Figure 1 It is a schematic diagram of the internal structure of a plugging-removing type filtering device;

[0044] Figure 2 It is a schematic diagram of the external structure of a plugging-removing type filtering device;

[0045] Figure 3 It is a schematic diagram of the structure of the detection component of a plugging-removing filter device;

[0046] Figure 4 is a flow chart of a detection method;

[0047] Parts and numbers in the picture:

[0048] 100- filtration device;

[0049] 110-filter pipe, 111-filter chamber, 112-filter screen, 113-first pipe, 114-second pipe, 115-filter residue chamber, 116-third pipe, 117-control box;

[0050] 121-ultrasonic blocking removal unit, 122-control unit, 123-ultrasonic transmitter;

[0051] 131-driving device, 132-adsorption and declogging unit, 133-coupling shaft, 134-conduit, 135-suction nozzle;

[0052] 150-detection component, 151-flow monitor, 152-pressure sensor;

[0053] 161-slag discharge pipe, 162-slag discharge pump;

[0054] 171 - first limiting member, 172 - second limiting member, 173 - blocking member. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described in conjunction with the drawings in the embodiment of the present invention. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. Moreover, the term "includes", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In the absence of further restrictions, the elements defined by the phrase "comprising..." do not exclude the existence of other identical elements in the process, method, article or device comprising the elements. If there is no conflict, the embodiments of the present invention and the various features in the embodiments can be combined with each other, all within the protection scope of the present invention.

[0056] Example 1

[0057] See also Figure 1, an embodiment of the present invention provides a blockage-removing filter device. During the use of the existing filter device, when its use time reaches a preset time or when blockage occurs, the filter element (filter screen) must be replaced to ensure that it achieves the expected filtering effect. In the process of replacing the filter element, it is necessary to open the filter device for operation, and at this time the filter medium (filter residue) may emit toxic and harmful gases, which not only increases the danger of operation, but also may threaten the health of the operator. In addition, the filter element needs to be replaced every time, which not only makes the operation process cumbersome, but also each replacement of the filter element will cause the filtering efficiency of the filter device to decrease, thereby affecting the overall work efficiency. Therefore, frequent replacement of the filter element not only increases the maintenance cost, but also may affect the stable operation of the equipment.

[0058] Therefore, in this embodiment, a blocking-removing filter device is provided. When the filter device 100 is in use, due to poor filtering quality or blockage of the filter screen 112, effective blocking-removing measures can be taken to remove the filter residue accumulated on the surface of the filter screen 112. This can not only avoid frequent replacement of the filter screen 112 and reduce maintenance workload, but also significantly extend the service life of the filter screen 112. In this way, the cost of replacing the filter screen 112 can be saved, the operating efficiency of the equipment can be improved, and the maintenance and operation costs can be reduced overall.

[0059] See also Figure 1 The present embodiment provides a blocking-removing filter device, which comprises a filter pipe 110 for liquid to pass through, and a blocking-removing assembly and a detection assembly 150 installed on the filter pipe 110. The main function of the blocking-removing assembly is to effectively remove the blocking of the filter pipe 110 to ensure the filtering effect of the filter screen 112. When the filter pipe 110 is blocked, the blocking-removing assembly can be quickly started to remove the filter residue through a series of blocking-removing means, thereby restoring the normal working state of the filter screen 112.

[0060] See also Figure 2 and Figure 3 , the detection component 150 is responsible for real-time monitoring of the working conditions of the filter pipe 110, including pressure, working time and liquid flow status. Through the pressure sensor 152, the detection component 150 can monitor the pressure changes in the filter pipe 110 in real time. Once the pressure abnormality is found, a signal can be sent to remind or control the filter pipe 110 to perform unblocking operations. At the same time, the detection component 150 can also record the working time of the filter pipe 110 to facilitate regular maintenance or unblocking operations on the filter screen 112. In addition, the detection component 150 also has a liquid flow monitoring function, which monitors the flow status of the liquid in real time through the flow monitor 151 to ensure that the filter device 100 operates in the best working state.

[0061] A hollow structure is formed inside the filter pipe 110, and this hollow part is a filter chamber 111. In this filter chamber 111, a filter screen 112 is arranged along the flow direction of the filter pipe 110. The function of this filter screen 112 is to intercept and filter out impurities and particles in the liquid flowing through the pipe, so as to ensure that the liquid or gas flowing out reaches the required cleanliness. In addition, two pipes are respectively arranged on the structure of the filter pipe 110, and these two pipes are respectively connected to the filter pipe 110. These two pipes are called the first pipe 113 and the second pipe 114, and both the first pipe 113 and the second pipe 114 can be used as a liquid inlet pipe and / or a liquid outlet pipe; in this embodiment, the first pipe 113 is used as a liquid inlet pipe, and the second pipe 114 is used as a liquid outlet pipe. During filtering, the liquid to be filtered enters the filter chamber 111 through the first pipe 113 for filtration, and the filtered liquid is discharged through the second pipe 114, while the filter residue remains on the filter screen 112. When a large amount of filter residue remains, the unblocking component is triggered to unblock the filter screen 112, thereby cleaning the filter residue on the filter screen 112 and restoring the filter screen 112 to a normal operating state.

[0062] See also Figure 2 In this embodiment, the deblocking component includes an ultrasonic deblocking unit 121. The ultrasonic deblocking unit 121 is installed at a specific position of the filter pipe 110, and its position is just able to cover the filter screen 112 arranged inside the filter pipe 110 in all directions. When the ultrasonic deblocking unit 121 starts working, it will emit ultrasonic signals to the liquid in the filter chamber 111. These ultrasonic signals propagate in the liquid in the filter chamber 111, causing a large number of bubbles to be generated inside the liquid. With the continuous action of ultrasonic waves, these bubbles will grow and eventually burst. When the bubbles burst, powerful kinetic energy will be generated, and this kinetic energy can effectively shake off the filter residue attached to the surface of the filter screen 112. In this way, the ultrasonic deblocking unit 121 can effectively make the blockage (filter residue) on the filter screen 112 fall off, thereby maintaining the efficient operation of the filtration system.

[0063] The ultrasonic unblocking unit 121 is composed of a control unit 122 and a plurality of ultrasonic transmitters 123. These ultrasonic transmitters 123 are connected to the control unit 122 through a line to ensure accurate signal transmission. A plurality of ultrasonic transmitters 123 are evenly distributed on the surface of the filter pipe 110 at a preset angle and interval. When the control unit 122 receives a specific signal, it immediately starts and directs these ultrasonic transmitters 123 to start unblocking operations. Through this layout, the ultrasonic transmitter 123 can cover most or all areas of the filter screen 112 on the filter pipe 110. When the ultrasonic transmitters 123 start working, they will emit high-frequency vibrations, which can effectively shake off the filter residue attached to the filter screen 112. As the filter residue falls off, the filter holes on the filter screen 112 are reopened, thereby ensuring that the filtering process can proceed smoothly and improving the filtering efficiency. This design not only improves the reliability of the filtering system, but also extends the service life of the filter screen 112, ensuring the efficient and stable operation of the entire filtering system.

[0064] When in use, the orifices of the first pipe 113 and the second pipe 114 are closed, and part of the solution is retained in the filter chamber 111. The control unit 122 activates the plurality of ultrasonic transmitters 123, so that the vibrations generated by the ultrasonic transmitters 123 propagate in the solution and arouse bubbles in the solution. When the bubbles are continuously generated and burst, greater energy is generated, so that the filter residue on the filter screen 112 is shaken off, and the filter holes of the filter screen 112 are reopened, so that normal filtering operations can be performed.

[0065] Example 2

[0066] See also Figure 1 , an embodiment of the present invention provides a blocking-removing filter device. In Example 1, an ultrasonic blocking-removing component is provided; however, this ultrasonic blocking-removing component can only vibrate the filter residue off the filter screen 112 through ultrasonic vibration, but cannot completely remove the filter residue. As time goes by, the filter residue will gradually accumulate and eventually block the filter holes on the filter screen 112, thereby greatly reducing the filtering effect. Therefore, in this embodiment, an adsorption blocking-removing unit 132 is also provided, whose main function is to effectively adsorb and discharge the filter residue from the filter chamber 111.

[0067] Specifically, the declogging assembly also includes an adsorption declogging unit 132. The adsorption declogging unit 132 is connected to a conduit 134 via a coupling 133, and the conduit 134 is sent into the filter chamber 111. In order to ensure the adsorption effect, a plurality of suction nozzles 135 are provided on the conduit 134, and these suction nozzles 135 are arranged at preset angles and intervals so as to more comprehensively cover various areas in the filter chamber 111. The coupling 133 is connected to a driving device 131 arranged outside the filter pipe 110, so that when the adsorption declogging unit 132 is in operation, the conduit 134 can make reciprocating linear motion in the filter chamber 111. In this way, the suction nozzle 135 can adsorb the filter residue into the filter residue chamber 115 arranged in the filter pipe 110.

[0068] In order to further ensure the stability and reliability of the adsorption and declogging unit 132, a first stopper 171 and a second stopper 172 are provided in the filter residue chamber 115 to limit the displacement path length of the coupling 133 or the suction nozzle 135. Blocks 173 are provided on the coupling 133, and when the coupling 133 is displaced, these blocks 173 will cooperate with the first stopper 171 and the second stopper 172 to ensure that the coupling 133 cannot exceed the preset displacement path length.

[0069] Furthermore, in order to better discharge the filter residue from the filter residue chamber 115, a slag discharge pipe 161 is also provided. A slag discharge pump 162 is provided through the slag discharge pipe 161, and the filter residue in the filter residue chamber 115 is discharged by the slag discharge pump 162, thereby avoiding excessive accumulation of filter residue in the filter residue chamber 115 and affecting the filtering effect.

[0070] In actual use, it is only necessary to start the driving device 131, and the driving device 131 will drive the coupling 133 to rotate and perform reciprocating linear motion. In this way, the suction nozzle 135 can effectively absorb the filter residue on the filter screen 112 or in the filter cavity 111, and absorb the filter residue into the filter residue cavity 115 through the conduit 134 and the coupling 133. Through the coordinated use of the residue discharge pump 162, it can be ensured that the filter residue is discharged in time, thereby maintaining the efficient operation of the filtration system.

[0071] Example 3

[0072] See also Figure 1, an embodiment of the present invention provides a filter device of the plugging removal type. In this embodiment 1, a design scheme of an ultrasonic plugging removal component is introduced; this ultrasonic plugging removal component has the function of shaking off the filter residue attached to the filter screen 112 by means of ultrasonic vibration. However, when the filter residue is attached to the filter screen 112 for too long, the energy generated by the bubbles alone may not be able to effectively shake off the filter residue. Therefore, in this embodiment, an improved scheme is proposed, that is, the filter residue on the filter screen 112 is blown away by the plugging removal component of the compressed air plugging unit. In order to better cooperate with the work of the compressed air plugging unit, in this embodiment, the filter screen 112 is set to a rotatable structure.

[0073] In this embodiment, bearing seats are provided at least at both ends of the filter screen 112 to ensure that the filter screen 112 can rotate smoothly. In addition, bearing seats can also be provided in the middle part of the filter screen 112 as needed; these bearing seats are installed inside the filter residue pipeline so that the filter screen 112 can rotate flexibly. In this way, every part of the filter screen 112 can be evenly purged, thereby improving the efficiency of clearing blockage.

[0074] In this embodiment, the compressed air blockage removal unit includes an air compressor and a compressed air pipe for communicating with the filter chamber 111. In order to further optimize the blockage removal effect, a third pipe 116 is further provided on the filter pipe 110.

[0075] During actual use, the compressed air pipe is connected through the third pipe 116 so that the compressed air can directly purge the filter 112. Since the compressed air purge has a large force, the filter 112 can be rotated clockwise or counterclockwise based on the bearing seat, so that all parts of the filter 112 can be purged and unblocked by the compressed air unblocking unit. When the filter residue is blown into the filter chamber 111 or onto the filter 112, the filter residue is adsorbed and discharged by the adsorption and unblocking device mentioned in Example 2, thereby completing the entire unblocking operation. Through this comprehensive unblocking solution, the cleaning efficiency of the filter 112 can be significantly improved, ensuring the stable operation of the filtration system.

[0076] In Examples 1 to 3, a control box 117 is installed on the third pipe 116. The control box 117 is equipped with a control circuit for coordinating and managing the operation of the entire unblocking system. Specifically, the ultrasonic unblocking unit 121, the adsorption unblocking unit 132, and the compressed air unblocking unit are all connected to the control circuit. Through the control instructions issued by the control circuit, each unblocking unit can work together in an orderly manner, thereby efficiently completing the unblocking operation.

[0077] When the detection component 150 (such as a flow meter or a pressure sensor) detects that the blockage degree of the filter 112 exceeds the set threshold, the ultrasonic declogging unit 121 is activated. First, the ultrasonic declogging unit 121 uses high-frequency vibration to loosen and fall off the filter residue on the filter 112, and the vibrated filter residue falls into the internal space of the filter 112. Generally, the ultrasonic declogging unit 121 cannot completely separate the filter residue from the filter, and there is still residual filter residue that has not completely fallen off. Then, the compressed air declogging unit is activated, and its compressed air is sprayed along the surface of the filter 112 to further purge the residual filter residue. During the purging process, the residual filter residue is pushed away from the filter by the airflow and enters the active area of ​​the adsorption unit, and then the filter residue is sucked out by the suction nozzle 135 of the adsorption declogging unit 132, completing the declogging operation of the filter device 100.

[0078] Example 4

[0079] See also Figure 4 , an embodiment of the present invention provides a detection method; in order to ensure that the filter device 100 described in Examples 1 to 3 can operate normally, a detection mechanism is set up in this embodiment to detect in real time whether there is blockage inside the filter device 100 and whether it needs to be cleared. When the monitoring system detects that there is a blockage inside the device and it needs to be cleaned, the system will automatically issue corresponding instructions. These instructions are transmitted to each related unit through the control circuit to ensure that each unit can perform the clearing operation in an orderly manner according to the predetermined order and procedure. In this way, the operating efficiency of the entire filter device 100 is maintained, ensuring the stability and reliability of the filtering effect.

[0080] The blockage detection method in this embodiment includes:

[0081] The detection component 150 detects filtering operation information of the filtering pipeline 110 after the filtering device 100 starts to operate.

[0082] In this embodiment, the detection component 150 includes the flow meter, pressure sensor 152 and timer mentioned in Example 1. Specifically, the flow meter is further divided into two parts, namely the first flow meter and the second flow meter. Similarly, the pressure sensor 152 is also divided into two parts, namely the first pressure sensor 152 and the second pressure sensor 152. In order to ensure comprehensive monitoring of the entire system, these detection components 150 are installed at the pipe mouth of the first pipeline 113 and the pipe mouth of the second pipeline 114 respectively. Specifically, the pipe mouth of the first pipeline 113 is equipped with a first flow meter and a first pressure sensor 152, while the pipe mouth of the second pipeline 114 is equipped with a second flow meter and a second pressure sensor 152. Through these detection components 150, the pipe mouths of the first pipeline 113 and the second pipeline 114 can be respectively tested for detailed pressure and flow conditions.

[0083] According to the pre-set detection component 150, the filtering operation information at least covers a plurality of key parameters, including but not limited to pipeline pressure information, pipeline working time information and liquid flow information. Specifically, the pipeline pressure information is obtained by the first pressure sensor 152 and the second pressure sensor 152 working together, and these two sensors are responsible for monitoring and recording the pressure changes of the first pipeline 113 and the second pipeline 114 respectively. The pipeline working time information is obtained through a timer, which can accurately record the operation duration of the filtering pipeline 110, thereby providing an important reference for subsequent maintenance and operation. As for the liquid flow information, it is obtained by the first flow meter and the second flow meter, which are respectively installed at the nozzles of the first pipeline 113 and the second pipeline 114, and can monitor and record the liquid flow through the first pipeline 113 and the second pipeline 114 in real time, ensuring the efficient operation of the filtering operation. Through the collaborative work of these detection components 150, the real-time status of the filtering operation can be fully grasped, providing strong support for the unblocking operation.

[0084] The detected filtering operation information is matched with the corresponding blocking removal threshold.

[0085] Furthermore, each filter operation information is equipped with a corresponding unblocking threshold. This means that whenever the system detects a filter operation information, it will automatically match this information with the corresponding unblocking threshold through the pre-set matching rules. In this way, the system can effectively identify and deal with the blockage problem, ensuring the smooth progress of the entire filtering or unblocking operation.

[0086] If the filtering operation information matches the corresponding unblocking threshold successfully, the unblocking component will perform unblocking operation on the filtering pipe 110. If the filtering operation information matches the corresponding unblocking threshold successfully, the system will perform unblocking operation on the filtering pipe 110 through the unblocking component. Specifically, the unblocking component will take corresponding unblocking measures to remove the blockage (filter residue) in the filtering pipe 110 according to the threshold of successful matching, so as to ensure the smooth progress of the filtering operation.

[0087] If the filtering operation information fails to match the corresponding blocking threshold, the detection component 150 continues to detect the filtering operation information. On the contrary, if the filtering operation information fails to match the corresponding blocking threshold, the detection component 150 will continue to monitor and detect the filtering operation information in real time until the filtering operation information successfully matches the corresponding blocking threshold.

[0088] When the unblocking component is unblocking the filter pipe 110 , the detection component 150 stops the detection operation; when the unblocking component is unblocking the filter pipe 110 , the detection component 150 will temporarily stop its detection operation.

[0089] When the unblocking operation is completed, the detection component 150 restarts the detection operation. When the unblocking operation is completed and the filter pipe 110 re-enters the filtering operation, the detection component 150 will restart and continue to perform the detection operation on the filter pipe 110.

[0090] For example, after the detection component 150 starts working, the flow monitor 151, the pressure sensor 152, and the timer are used to detect the filtering operation information, and the detection component 150 matches the detected filtering operation information with at least one corresponding blocking threshold through a preset rule. When the parameters of the filtering operation information meet the preset rules, it is considered that the match is successful, which may include one or more of the following methods:

[0091] Method P1:

[0092] After the filter device 100 starts to operate, the detection component 150 uses the flow monitor 151 to detect the flow difference between two adjacent moments of the second pipeline 114.

[0093] The flow rate monitor 151 is used to detect the flow rate f1 of the second pipeline 114 at time t1.

[0094] The flow rate monitor 151 is used to detect the flow rate f2 of the second pipeline 114 at time t2.

[0095] The flow difference |f2-f1| between the two moments is compared with a flow difference blocking removal threshold threshold1 corresponding to the flow difference.

[0096] If the flow difference |f2-f1| is greater than the flow difference blocking threshold threshold1, the match is successful.

[0097] Since the blockage of the filter screen 112 is a gradual process, the degree of blockage will gradually increase over time. Therefore, at the nozzle of the second pipe 114, the water flow rate will also slowly decrease. Specifically, when the flow rate of the second pipe 114 at time point t1 is f1, the difference between the flow rate f2 at the next adjacent time point t2 is not too large under normal circumstances. In order to ensure the normal operation of the system, we set a normal flow difference unblocking threshold threshold1. This threshold represents the normal range of the flow difference between two adjacent moments. However, when the actual measured flow difference |f2-f1| exceeds or equals this unblocking threshold threshold1, this indicates that the amount of solution discharged through the nozzle of the second pipe 114 suddenly decreases too fast, which is generally caused by the blockage of the filter screen 112 inside the filter pipe 110. In order to restore the normal flow difference and ensure the efficient operation of the system, it is necessary to perform unblocking operations inside the filter pipe 110. Through timely unblocking operations, the flow difference can be restored to normal values, thereby ensuring the stability and efficiency of the entire system.

[0098] Usually, it can be determined based on the stability of the system and the range of flow fluctuation. When the flow rate of the liquid outlet at two adjacent moments changes by 10% to 15%, it is possible to consider unblocking the filter 112. This is because a significant drop in flow rate usually means that the degree of blockage of the filter 112 has significantly affected the fluid flow performance of the system. The time interval between the two adjacent moments can be 1 minute, 5 minutes, 10 minutes, 15 minutes, etc.

[0099] In actual operation, it is necessary to monitor the changes in the outlet flow rate over a period of time and analyze the fluctuation range under normal working conditions. If the outlet flow rate fluctuates slightly during normal operation, a lower threshold value (such as 10%) can be used; if the fluctuation is large, the threshold value can be appropriately increased (such as 15%).

[0100] Therefore, when f2 at two adjacent moments is only 10%-15% of f1, unblocking operations are performed; therefore, the flow difference unblocking threshold threshold1 is taken as (85%-90%) f1. When the actually measured flow difference |f2-f1| exceeds or is equal to this unblocking threshold (85%-90%) f1, the match is successful and unblocking operations need to be performed on the filter pipe 110.

[0101] Method P2:

[0102] The detection component 150 detects the pressure difference between the first pipeline 113 and the second pipeline 114 using the pressure sensor 152 after the filter device 100 starts to work.

[0103] The pressure sensor 152 is used to detect the pipe mouth pressure p1 of the first pipe 113 .

[0104] The pressure sensor 152 is used to detect the pipe mouth pressure p2 of the second pipe 114 .

[0105] The pressure difference |p2-p1| between the first pipeline 113 and the second pipeline 114 is compared with a pressure difference blocking removal threshold threshold2 corresponding to the pressure difference.

[0106] If the pressure difference |p2-p1| between the first pipeline 113 and the second pipeline 114 is greater than the pressure difference blocking threshold threshod2, the match is successful.

[0107] Since the filter screen 112 will gradually be blocked during the filtration, different pressure values ​​will exist between the pipe opening of the first pipe 113 and the pipe opening of the second pipe 114. When the blocked area of ​​the filter screen 112 is small, the flow rate of the filtered liquid does not change much, and the pressure difference between the pipe opening of the first pipe 113 and the pipe opening of the second pipe 114 is still maintained within a normal range; as the filtration time increases, the pressure difference between the pipe opening of the first pipe 113 and the pipe opening of the second pipe 114 gradually increases. When the pressure difference between the pipe opening of the first pipe 113 and the pipe opening of the second pipe 114 exceeds the normal value, there may be risks of equipment damage, pipe rupture, etc.

[0108] Therefore, the normal value of the pressure difference between the first pipe 113 and the second pipe 114 is set to threshod2. When the pressure difference |p2-p1| between the first pipe 113 and the second pipe 114 is greater than or equal to the pressure difference unblocking threshold threshod2, the filter pipe 110 needs to be unblocked.

[0109] The standard pressure difference between the two nozzles is calculated by the following formula:

[0110]

[0111] Wherein, Δp is the standard pressure difference between the two nozzles, in Pa; μ is the dynamic viscosity of the flow, in Pa·s; L is the thickness of the filter 112, in m; Q is the flow rate of the fluid, in m 3 / s; φ is the opening rate of the filter 112 (i.e., the ratio of the filter hole area to the total area of ​​the filter 112); A is the total area of ​​the filter 112, in m 2 ; k is the permeability coefficient of the filter 112 material, unit: m 2 The formula for the standard pressure difference between two nozzles is based on Darcy's law and the principles of fluid mechanics, and is used to describe the flow resistance of a fluid through a porous medium. Darcy's law is often used to describe filtration and permeation processes. It states that when a liquid flows through a filter layer, the flow resistance (i.e., the pressure difference) is related to the fluid properties, material structure, and flow rate.

[0112] The liquid to be filtered is a solution with filtration granular residue, and the residue is powdered activated carbon particles and / or other solid particles. Since the filtered solution is wastewater containing similar activated carbon particles, the viscosity can be initially selected to be in the range of 1cP-10cP, and then adjusted according to specific working conditions and practical results, and its dynamic viscosity μ=10cP=0.01Pa·s.

[0113] For the cylindrical filter 112 used for particle filtration, the thickness depends on the specific application requirements and the properties of the filtered particles. When processing high-concentration suspended particles (such as solutions containing activated carbon particles), the thickness of the filter is usually between 0.5mm and 5mm; according to the specific working conditions and practical results, the thickness of the filter 112 is set to 5mm = 0.005m, and the total area of ​​the filter 112 is set to 2m 2 , the opening rate is 25%, so the effective filtration area of ​​the filter hole is φ·A=2m 2 ×25%=0.5m 2 The filter 112 is a PP filter element, that is, a filter element made of polypropylene as raw material, and its permeability coefficient is generally 1×10 -10 -1×10 - 14 m 2 Since the filtered residue in this embodiment is granular, its permeability coefficient is taken as the larger 1×10 -10 m 2 .

[0114] In this embodiment, the cross-sectional diameter of the filtration pipe 110 used is 500 mm, and the flow rate of the fluid during filtration is about 0.5 m / s, so the flow rate of the fluid at this time is about 0.1 m 3 / s.

[0115] Substitute into the formula:

[0116]

[0117] Therefore, the standard pressure difference between the two pipe openings is 0.1MPa; in practical applications, determining when to perform the unblocking operation usually depends on the safety of the equipment operation and the requirements of the filtering effect. In order to ensure the normal operation and filtering effect of the equipment, an additional pressure difference tolerance range is usually set. This range is generally set to 5%-15% of the standard pressure difference Δp. Taking the standard pressure difference of 0.1MPa as an example, the pressure difference unblocking threshold is set to threshod2=Δp+(0.005MPa-0.015MPa). This means that the unblocking operation will only be triggered when the pressure difference between the two pipe openings exceeds 0.105MPa-0.115MPa. Of course, this pressure difference tolerance range is not fixed and can be appropriately adjusted and optimized according to the design pressure resistance performance of the filter device 100 and actual operating experience.

[0118] Therefore, in order to ensure the efficient operation, safety performance and sufficient filtering time of the filter device 100, the pressure difference unblocking threshold threshod2 is set to 0.115MPa. This means that the standard force that can be borne by each square centimeter of the area on the filter screen 112 is 1.02kgf. When the force borne by each square centimeter of the area on the filter screen 112 exceeds 1.17kgf, it is considered to exceed the range that the filter screen 112 can withstand, and it needs to be unblocked to avoid damage to the filter screen 112. In other words, when the detection component 150 detects that the pressure difference between the first pipeline 113 and the second pipeline 114 is greater than or equal to the pressure difference unblocking threshold 0.115MPa, it is considered that the conditions for the unblocking operation have been met and the match is considered successful. At this time, the unblocking operation will be started, and the filter pipeline 110 will be unblocked to ensure that the filter device 100 can continue to operate efficiently and safely. In this way, equipment failures caused by excessive pressure differences can be effectively avoided, while the filtering effect can also be guaranteed, ensuring the stability and reliability of the entire system.

[0119] Method P3:

[0120] The detection component 150 detects the flow difference between the first pipeline 113 and the second pipeline 114 using the flow monitor 151 after the filter device 100 starts to work.

[0121] The first flow rate monitoring meter 151 is used to detect the flow rate f of the first pipeline 113 at time t. t1 .

[0122] The second flow rate monitoring meter 151 is used to detect the flow rate f of the second pipeline 114 at time t. t2 .

[0123] The flow difference between the two pipes at time t |f t2 -f t1|Compare with the flow difference blocking threshold threshold4 corresponding to the flow difference.

[0124] If the flow difference |f t2 -f t1 |The match is successful when it is greater than or equal to the flow difference blocking threshold threshold4.

[0125] During the filtering process of the filtering device 100, the filtering effect of the filter screen 112 in the initial stage is usually quite outstanding, and the filtering speed is relatively fast. In this stage, the difference between the liquid inlet flow rate at the orifice of the first pipe 113 and the liquid outlet flow rate at the orifice of the first pipe 113 is generally not too large, and usually, these two flow values ​​are quite close. However, as time goes by, the filter screen 112 is gradually blocked, resulting in a gradual increase in the difference between the liquid inlet flow rate at the orifice of the first pipe 113 and the liquid outlet flow rate at the orifice of the first pipe 113. As time goes by, this flow difference will become more and more obvious. When the flow difference between the liquid inlet flow rate at the orifice of the first pipe 113 and the liquid outlet flow rate at the orifice of the first pipe 113 is |f t2 -f t1 When the difference between | exceeds a specific flow difference blocking threshold threshold4, it indicates that the filter screen 112 has been blocked to a considerable extent, and blocking removal is required to restore the filter device 100 to a normal working state.

[0126] According to practical engineering projects and industry standards, through long-term experiments and actual applications, it is concluded that when the flow rate at the outlet is 15% to 20% of the flow rate at the inlet, the blockage removal operation can be carried out. This flow difference is established as a reliable time for blockage removal and cleaning. For example, in the fields of petrochemicals and water treatment, there are relevant standards and recommendations to ensure that the filtration system operates efficiently and economically.

[0127] Therefore, threshold4 takes (80%-85%) f1, that is, when the actually measured flow difference |f2-f1| exceeds or is equal to the blockage removal threshold value (80%-85%) f1, the blockage removal operation can be performed.

[0128] Method P4:

[0129] The detection component 150 uses a timer to detect the working time of the filter pipe 110 after the filter device 100 starts working.

[0130] The timer is used to record the time t when the filtering pipeline 110 starts to operate. start The value of .

[0131] The time t at which the operation starts start The value of plus the standard operating time hj of the filter 112.

[0132] The time t at which the operation starts start The value after adding the standard operation time h of the filter 112 is compared with the working time blocking threshold threshod3 corresponding to the working time.

[0133] If the time t at which the operation starts start The match is successful when the value after adding the standard operating time h of the filter 112 is greater than or equal to the working time blocking threshold threshod3.

[0134] The standard operation time h is updated by the blockage coefficient α after each unblocking operation is performed on the filter pipe 110; when the operation starts at the time t start Add the updated filter 112 standard operation time h new The value is less than the minimum standard working time h mib After that, according to the minimum standard working time h min Carry out blockage removal operations at intervals.

[0135] During the filtering process, a standard working time is usually preset based on factors such as the material of the filter screen 112, the properties of the filtered solution, and the composition of the filter residue. This standard working time refers to the time that the filter screen 112 can maintain high-efficiency filtering performance under ideal conditions. As the working time of the filter screen 112 accumulates, its filtering effect will gradually decrease. When the working time of the filter screen 112 is close to this preset standard working time, the filtering effect will be significantly reduced. At this time, the filter screen 112 needs to be unblocked to ensure that its working efficiency and filtering quality are not affected.

[0136] Specifically, this standard working time is set to a certain time value h, which represents the expected use time of the filter 112 under normal working conditions. As time goes by and the number of times the filter 112 is used increases, each time the standard working time or the unblocking operation is completed, the performance of the filter 112 will gradually decline, and the standard working time when it is used again will be shortened accordingly. In order to adapt to this change, a blocking coefficient α is introduced to dynamically adjust and update the standard working time h. new In this way, the standard working time h will gradually decrease as the number of operations increases until it reaches a minimum standard working time h min This minimum standard working time means that after the filter 112 has been used and unblocked for many times, its performance has dropped to a critical point, and even if the unblocking operation is continued, its working time cannot be further extended. The purpose of this is to prevent the unblocking time interval of the filter 112 from becoming too short, thereby ensuring the stability and reliability of the filter 112 in actual applications.

[0137] The clogging coefficient α is an attenuation factor between (0,1); when α is close to 0, it represents rapid attenuation, and the cleaning effect weakens rapidly, which is suitable for systems with large short-term impacts. When α is close to 1, it represents slow attenuation, and the cleaning effect exists for a long time, which is suitable for systems with obvious long-term effects. For example, in a scenario where high-concentration particulate matter will quickly clog the filter 112, a smaller α value (such as 0.3-0.5) can be selected; if the filter 112 is blocked slowly, or the cleaning effect can be maintained for a long time, a larger α value (such as 0.7-0.9) is selected.

[0138] After the filtering operation is officially started, a timer system will be activated and start recording the initial time point of the operation. This initial time point is t start to record. Then, the timer will start at this initial time t start Based on , a preset standard working time h is added to calculate an estimated time for unblocking. This time represents the time from the start of the filtering operation to the time when the unblocking operation is expected to be performed. When the actual running time of the filtering device 100 reaches this estimated time period, the system will perform a matching test. Once the match is successful, it means that the scheduled unblocking operation time has arrived. At this time, the system will automatically start the unblocking operation process to ensure the smooth progress of the filtering operation.

[0139] The updated value of the standard operation duration is obtained by the following formula:

[0140] h new =Max(h old ×α,h min )

[0141] In most cases, the unblocking cycle of the filter screen 112 of this type of filter device 100 is usually between 8 and 24 hours, which mainly depends on the specific load conditions and operating conditions. Specifically, if the concentration of the filter residue is high or the requirement for filtration efficiency is high, the frequency of unblocking needs to be increased accordingly, and it may be necessary to perform an unblocking operation every 4 to 8 hours. On the contrary, if the load is light or the flow rate of the solution is relatively stable, the unblocking cycle can be appropriately extended, even to once every 24 hours, or longer. However, these conditions are prerequisites and need to be set and adjusted according to the actual filtering situation to ensure that the filter device 100 can operate efficiently and stably.

[0142] In the actual detection process, the detection component 150 will use multiple detection methods at the same time, including method P1, method P2, method P3 and method P4. These detection methods will be matched and evaluated according to their respective specific conditions. Specifically, when the detection component 150 is performing a detection task, it will check each method at the same time to determine whether it meets the corresponding conditions. Once the detection component finds that one of the methods, whether it is method P1, method P2, method P3 or method P4, meets its set conditions and successfully matches, then the detection component 150 will immediately stop further detection of other methods; the detection component 150 will quickly execute the unblocking instructions corresponding to the successfully matched method, so as to quickly and effectively perform unblocking operations to ensure the smooth operation of the system. This method not only improves the efficiency of detection, but also ensures that action can be taken quickly when potential problems are discovered, thereby minimizing the downtime of the device.

[0143] After the unblocking operation, the filtering device 100 will restart the filtering operation. At this time, the detection component 150 will restart the detection of the filtering operation information. When the detected filtering operation information is not successfully matched, the filtering operation will continue; otherwise, the next unblocking operation will be started.

[0144] In this embodiment, the filter device 100 is equipped with at least three detection components 150, including at least a flow monitor 151, a pressure sensor 152 and a timer. These detection components 150 can monitor the operating status of the filter device 100 in real time to ensure its normal operation.

[0145] For example, these filter devices 100 are usually used in a special filter plant, and the filter plant is equipped with a large number of similar filter devices 100. Each filter device 100 will perform a blockage removal operation based on the information provided by its own detection component 150 to maintain the filtering efficiency.

[0146] However, due to the environmental characteristics of the filtration plant, such as high humidity and low temperature, the flow monitor 151, the pressure sensor 152, the timer and other detection components 150 are more likely to be damaged. In this case, the maintenance personnel are often unable to perform maintenance and repair on all the detection components 150 at the same time. Therefore, a variety of different detection components 150 are set on each filter device 100 to prevent all the detection components 150 from being damaged at the same time, thereby causing filtering failure of the filter device 100.

[0147] When some detection components 150 are damaged, other undamaged detection components 150 can still continue to work and provide necessary filtering operation information. Through this information, the blockage of the filter screen 112 can be determined, and corresponding unblocking operations can be performed according to the actual situation. In this way, even if some detection components 150 fail, the filter device 100 can still maintain a certain operating efficiency, ensuring the stability and reliability of the entire filtering system.

[0148] It is understandable that the examples cited above are only partial implementation methods based on the flow monitor 151, the pressure sensor 152 and the timer as the detection component 150 to detect the filtering operation information and perform matching. In fact, in addition to these specific detection components 150, there are many other possible implementation methods that can be operated using similar principles. The specific details of these implementations will not be discussed in detail here. Similarly, for those situations where other types of detection components 150 are used to monitor the filtering operation information, such as power consumption monitors, solution concentration monitors, acoustic sensors and resistance sensors, similar methods can also be used to perform corresponding information matching. These implementation methods are also feasible, but for the sake of brevity, they will not be elaborated here.

[0149] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A plugging-removing filter device, characterized in that: It comprises a filter pipe (110), and a blockage removal component and a detection component (150) arranged on the filter pipe (110); the blockage removal component is used to remove blockage from the filter pipe (110), and the detection component (150) is used to detect the pressure, working time and liquid flow state of the filter pipe (110); The interior of the filter pipe (110) is hollow to form a filter chamber (111); a filter screen (112) is provided in the filter chamber (111) in the same direction as the flow direction of the filter pipe (110); the filter pipe (110) is provided with a first pipe (113) and a second pipe (114) which are in communication with the filter pipe (110); The blockage removal component comprises an ultrasonic blockage removal unit (121), which is arranged on the filter pipe (110) and covers the filter screen (112) in the direction in which the filter screen (112) is arranged in the filter pipe (110); when the ultrasonic blockage removal unit (121) is in operation, bubbles are generated in the liquid in the filter cavity (111), and the kinetic energy generated by the bursting of the bubbles causes the filter residue attached to the filter screen (112) to fall off.

2. A plugging-removing filter device according to claim 1, characterized in that: The ultrasonic blockage removal unit (121) comprises a control unit (122) and a plurality of ultrasonic transmitters (123); the ultrasonic transmitters (123) are connected to the control unit (122) via a line; and the plurality of ultrasonic transmitters (123) are arranged on the filter pipe (110) at a preset angle and interval.

3. A plugging-removing filter device according to claim 1, characterized in that: The blockage removal component further comprises an adsorption blockage removal unit (132); the adsorption blockage removal unit (132) delivers a conduit (134) into the filter cavity (111) via a coupling shaft (133); a plurality of suction nozzles (135) arranged at preset angles and intervals are provided on the conduit (134); The coupling shaft (133) is connected to a driving device (131) disposed outside the filter pipe (110); when the adsorption and declogging unit (132) is in operation, the guide tube (134) performs reciprocating linear motion in the filter cavity (111), and the filter residue is adsorbed into a filter residue cavity (115) disposed in the filter pipe (110) through the suction nozzle (135).

4. A plugging-removing filter device according to claim 1, characterized in that: The blockage removal assembly further comprises a compressed air blockage removal unit; the compressed air blockage removal unit comprises an air compressor and a compressed air pipe for communicating with the filter chamber (111).

5. A plugging-removing filter device according to any one of claims 1 to 4, characterized in that: The filtering pipe (110) is also provided with a third pipe (116); the third pipe (116) is provided with a control box (117); a control circuit is provided in the control box (117); the ultrasonic blockage removal unit (121), the adsorption blockage removal unit (132) and the compressed air blockage removal unit are all connected to the control circuit and perform blockage removal operations according to the control of the control circuit.

6. A detection method, characterized in that: include: The detection component (150) detects filtering operation information of the filtering pipeline (110) after the filtering device (100) starts operating; The filtering operation information includes pipeline pressure information and / or pipeline working time information and / or liquid flow information; Matching the detected filtering operation information with the corresponding blocking removal threshold; If the filtering operation information successfully matches the corresponding blocking removal threshold, the blocking removal component performs a blocking removal operation on the filtering pipeline (110); If the filtering operation information fails to match the corresponding blocking removal threshold, the detection component (150) continues to detect the filtering operation information; When the unblocking component is performing an unblocking operation on the filter pipe (110), the detection component (150) stops the detection operation; When the unblocking operation is completed, the detection component (150) restarts the detection operation.

7. A detection method according to claim 6, characterized in that: The detection component (150) detects the filtering operation information of the filtering pipeline (110) after the filtering device (100) starts operating, including at least one of the following methods: The detection component (150) detects the flow difference between two adjacent moments of the second pipeline (114) using a flow monitor (151) after the filtering device (100) starts operating; The detection component (150) detects the flow difference between the first pipeline (113) and the second pipeline (114) using a flow monitor (151) after the filtering device (100) starts to operate; The detection component (150) detects the pressure difference between the first pipeline (113) and the second pipeline (114) using the pressure sensor (152) after the filtering device (100) starts to operate; The detection component (150) uses a timer to detect the working time of the filtering pipeline (110) after the filtering device (100) starts working.

8. A detection method according to claim 7, characterized in that: The detection component (150) detects the flow difference between two adjacent moments of the second pipeline (114) using a flow monitor (151) after the filtering device (100) starts operating, including: Using the flow monitor (151) to detect the flow rate f1 of the second pipeline (114) at time t1; Using the flow monitor (151) to detect the flow rate f2 of the second pipeline (114) at time t2; Compare the flow difference |f2-f1| between the two moments with the flow difference blocking removal threshold threshold1 corresponding to the flow difference; If the flow difference |f2-f1| is greater than or equal to the flow difference blocking threshold threshold1, the match is successful.

9. A detection method according to claim 7, characterized in that: The detection component (150) detects the pressure difference between the first pipeline (113) and the second pipeline (114) using the pressure sensor (152) after the filter device (100) starts to operate, including: Using the pressure sensor (152) to detect the pipe mouth pressure p1 of the first pipe (113); Using the pressure sensor (152) to detect the pipe mouth pressure p2 of the second pipe (114); comparing the pressure difference |p2-p1| between the first pipeline (113) and the second pipeline (114) with a pressure difference blocking removal threshold threshold2 corresponding to the pressure difference; If the pressure difference |p2-p1| between the first pipeline (113) and the second pipeline (114) is greater than the pressure difference blocking threshold threshod2, the match is successful.

10. A detection method according to claim 7, characterized in that: The detection component (150) detects the working time of the filtering pipeline (110) using a timer after the filtering device (100) starts working, including: The timer is used to record the time t when the filtering pipeline (110) starts to operate. start The value of The time t at which the operation starts start The value of plus the standard operation time h of the filter (112); The time t at which the operation starts start The value after adding the standard operation time h of the filter (112) is compared with the working time blocking threshold threshod3 corresponding to the working time; If the time t at which the operation starts start The match is successful when the value after adding the standard operation time h of the filter (112) is greater than or equal to the operation time blocking threshold threshod3; The standard operation time h is updated by the blockage coefficient α after each unblocking operation is performed on the filter pipe (110); when the operation starts at the time t start Add the updated filter (112) standard operation time h new The value is less than the minimum standard working time h min After that, according to the minimum standard working time h min Carry out blockage removal operations at intervals.

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