Dust removal device

Abstract

The device, equipped with a screen and the like, removes sediment that accumulates on the seabed below it without dispersing the sediment. [Solution] The dust removal device 1 includes a dust removal screen 20 positioned in the waterway 11 to capture impurities in the flowing water, and a device body 2 that removes impurities from the waterway 11 while capturing them with the dust removal screen 20, and a sand removal device 4 that includes a perforated pipe 40 having a plurality of openings 42a and positioned below the device body 2 along the bottom wall surface 11b of the waterway 11, and performs sand removal processing by sucking up sediment accumulated on the bottom wall surface 11b through the openings 42a and removing it through the perforated pipe 40.

Description

Technical Field

[0001] The present invention relates to a dust removal device that separates impurities (such as sludge and garbage) from flowing water such as the discharged water in rivers and reservoirs and the inflowing water in sewer facilities.

Background Art

[0002] There is known a dust removal device that captures and removes impurities in flowing water while rotating an endless porous screen that is vertically elongated and installed in a water channel (hereinafter simply referred to as a screen). In this type of dust removal device, sediment accumulates between the screen and the bottom of the water channel.

[0003] The accumulated sediment may prevent the smooth movement of the screen. Therefore, a dust removal device equipped with a sediment prevention device as disclosed in Patent Document 1 has been proposed. This dust removal device includes a rotating water spray nozzle on the downstream side water stop wall provided on the downstream side of the screen, and water is periodically sprayed from the rotating water spray nozzle between the screen and the bottom of the water channel to disperse the sediment. This suppresses the accumulation of sediment.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in a conventional dust removal device that sprays water from a rotating water spray nozzle to disperse sediment, it is conceivable that the dispersed sediment may enter the mechanism part that drives the screen and cause trouble. It is also conceivable that the sediment and the minute impurities contained in the sediment may flow downstream and have an adverse effect on the operation of the downstream equipment. Furthermore, foreign matter may clog the water spray openings such as the rotating water spray nozzle, often hindering the suppression of sediment accumulation.

[0006] The present invention has been made in view of the above circumstances, and aims to provide a dust removal device that has the function of removing sediment accumulated on the seabed below the main body of the device equipped with a screen, etc., without dispersing the sediment. [Means for solving the problem]

[0007] (Aspect 1) To solve the above problems, an embodiment 1 of a dust removal device according to one aspect of the present invention comprises: a device body that is arranged in a waterway and includes a capturing member that captures impurities in the flowing water, and performs an impurity removal process that removes impurities from the waterway while capturing them with the capturing member; and a sand removal device that includes a perforated pipe having a plurality of openings and arranged below the device body along the bottom surface of the waterway, and performs a sand removal process that removes sediment accumulated on the bottom surface by sucking it up from the openings and removing it through the perforated pipe.

[0008] In this debris removal device, sediment accumulating on the bottom of the waterway is sucked in through a perforated pipe. This removes the sediment. Therefore, sediment accumulating on the bottom of the waterway below the device can be removed without dispersing the sediment.

[0009] (Aspect 2) In the dust removal device of embodiment 1, a plurality of the perforated pipes may be arranged in parallel along the bottom surface of the waterway.

[0010] This dust removal device makes it possible to remove soil and sand below the device body more evenly through multiple perforated pipes.

[0011] (Aspect 3) In the dust removal device of embodiment 1 or 2 described above, the sand removal device may be configured to include a sand removal pump that sucks up soil and sand through the perforated pipe, and a sand removal pipe that has the sand removal pump in the middle and guides the soil and sand sucked up through the perforated pipe out of the waterway.

[0012] This debris removal device allows for the removal of sediment from the waterway through a sediment discharge pipe while simultaneously sucking it up using a sediment discharge pump. Therefore, it is possible to remove sediment accumulated below the device body from the waterway without allowing it to flow downstream.

[0013] (Aspect 4) In any one of the above embodiments 1 to 3, the dust removal device may further include a washing pipe connected to the perforated pipe and a washing pump capable of supplying flowing water in the waterway to the perforated pipe through the washing pipe, and may be configured to perform a washing process in which the perforated pipe is washed by supplying the flowing water to the perforated pipe as washing water.

[0014] This debris removal device allows the perforated pipes to be cleaned using the water flowing through the waterway as washing water. This cleaning prevents sediment from clogging the perforated pipes, and if sediment is already clogging the pipes, it can clear the blockage. In other words, it makes it possible to loosen and remove compacted sediment with washing water before the sediment discharge process.

[0015] (Aspect 5) In the above embodiment 4, the main body of the device further comprises a spray device including a spray nozzle for spraying water onto the supplementary member and a trough for containing impurities removed from the supplementary member by the pressure of the water sprayed from the spray nozzle, the washing pipe is further connected to the spray nozzle, and the sand removal device further comprises a switching valve capable of switching the communication state between the pipes between a first communication state in which the perforated pipe and the washing pipe are in communication and a second communication state in which the spray nozzle and the washing pipe are in communication.

[0016] In this dust removal device, when the pipes are connected in the first connected state, the perforated pipe and the cleaning pipe are connected, and the inside of the perforated pipe is cleaned by cleaning water. On the other hand, when the pipes are connected in the second connected state, the spray nozzle and the cleaning pipe are connected, and cleaning water is sprayed from the spray nozzle onto the capture member. In other words, this dust removal device achieves a rational configuration in which the cleaning pipe and cleaning pump are shared as equipment for cleaning the perforated pipe and as equipment for removing foreign matter from the capture member in the main body of the device.

[0017] (Aspect 6) In any one of the above embodiments 1 to 5, the dust removal device further comprises: a processing condition setting unit that sets sand removal processing conditions which are the operating conditions when performing the sand removal processing; a processing control unit that controls the sand removal device and performs the sand removal processing based on the sand removal processing conditions; an information acquisition unit that acquires sand removal processing information which includes at least the load of the sand removal pump when the sand removal processing is performed; and a learning unit that performs a learning process to optimize the sand removal processing conditions based on the sand removal processing information acquired by the information acquisition unit, wherein the processing condition setting unit may be configured to update the sand removal processing conditions based on the learning results of the learning unit.

[0018] In this dust removal device, sand removal is performed based on the sand removal conditions set by the processing condition setting unit. Then, the sand removal conditions are learned based on the sand removal information acquired by the information acquisition unit. As a result, it becomes possible to perform sand removal more appropriately based on more optimal sand removal conditions.

[0019] (Aspect 7) In the dust removal device of embodiment 6 described above, the sand removal treatment conditions include, for example, at least one of the disclosure time and execution time of the sand removal treatment.

[0020] In this dust removal device, the start time of the sand removal process and / or the execution time of the sand removal process are used as the sand removal process conditions, and the sand removal process is executed according to these conditions. Then, based on the sand removal process information acquired by the information acquisition unit, a learning process is executed, so that the start time of the sand removal process and / or the execution time of the sand removal process are optimized so that the sand removal process is executed more appropriately.

[0021] (Aspect 8) In the dust removal device according to the above Aspect 6 or 7, the processing condition setting unit further sets cleaning process conditions, which are the operating conditions when executing the cleaning process, and the processing control unit further executes the cleaning process based on the cleaning process conditions. The information acquisition unit further acquires cleaning process information including at least the load of the cleaning pump when the cleaning process is executed, and the learning unit further executes a learning process for optimizing the cleaning process conditions based on the cleaning process information acquired by the information acquisition unit. The processing condition setting unit may be configured to update the cleaning process conditions based on the learning result of the learning unit.

[0022] In this dust removal device, the cleaning process is executed based on the cleaning process conditions set by the processing condition setting unit. Then, the cleaning process conditions are learned based on the cleaning process information acquired by the information acquisition unit. Therefore, it becomes possible to execute the cleaning process more appropriately based on more optimal cleaning process conditions.

[0023] (Aspect 9) In the dust removal device according to the above Aspect 9, the cleaning process conditions include, for example, at least one of the start time and the execution time of the cleaning process.

[0024] In this dust removal device, the start time of the cleaning process and / or the execution time of the cleaning process are used as the cleaning process conditions, and the cleaning process is executed according to these conditions. Then, based on the cleaning process information acquired by the information acquisition unit, a learning process is executed, so that the start time of the cleaning process and / or the execution time of the cleaning process are optimized so that the cleaning process is executed more appropriately.

Advantages of the Invention

[0025] As described above, the dust removal device of the present invention makes it possible to suppress the accumulation of sediment on the seabed below the device body, such as a screen, without causing the sediment to disperse. [Brief explanation of the drawing]

[0026] [Figure 1] This is a block diagram of a dust removal device according to the present invention. [Figure 2] This is a perspective view showing the main body of the dust removal device. [Figure 3] This is a cross-sectional view of the dust removal device. [Figure 4] This is a plan view (partially a cross-sectional view) of the dust removal device. [Figure 5] This is a cross-sectional view of the dust removal device (during sand removal). [Figure 6] This is a cross-sectional view of the dust removal device (during the cleaning process). [Figure 7] This is a cross-sectional view of the dust removal device (when flowing water is supplied to the spray device). [Figure 8] This is a system configuration diagram of the dust removal device. [Figure 9] This flowchart shows an example of the operation control of the dust removal device. [Modes for carrying out the invention]

[0027] A preferred embodiment of the present invention will be described in detail below with reference to the attached drawings.

[0028] [Overall configuration of dust removal device 1] Figure 1 is a block diagram illustrating a dust removal device 1 according to the present invention. The dust removal device 1 comprises a device body 2 and a sand removal device 4 installed in a waterway 11 (shown in Figures 2 to 4), and a control unit 5 that comprehensively controls the device body 2 and the sand removal device 4.

[0029] (Configuration of the main unit 2 of the device) Figure 2 is a perspective view mainly showing the main body 2 of the dust removal device 1, Figure 3 is a cross-sectional view of the dust removal device 1, and Figure 4 is a plan view (partially a cross-sectional view) of the dust removal device 1.

[0030] The main body of the device 2 is the primary component of the dust removal device 1 and has the function of capturing impurities in the flowing water of the waterway 11 and moving them upwards in the waterway. The main body of the device 2 comprises a dust removal screen 20 for capturing impurities, a drive mechanism for driving the dust removal screen 20, and a spray device 30 for removing the captured impurities from the dust removal screen 20.

[0031] The dust removal screen 20 is an elongated, endless, and porous belt member configured to penetrate the longitudinal direction (water flow direction) of the water channel 11. The dust removal screen 20 is positioned between the upstream partition wall 13 provided in the water channel 11 and the downstream partition wall 14 provided downstream at a predetermined distance. The upstream and downstream sides are defined based on the water flow direction in the water channel 11.

[0032] The waterway 11 is composed of side walls 11a and a bottom wall 11b that face each other in the width direction. The upstream partition wall 13 is provided in the width direction of the waterway 11, extending across both side walls 11a of the waterway 11, and the downstream partition wall 14 (omitted from Figures 3 to 7 for convenience) is provided in the center of the waterway 11 in the width direction, with a gap between it and both side walls 11a. The dust removal screen 20 is positioned so that its upper part protrudes upward from the waterway 11 and is configured to rotate when the drive mechanism is operated.

[0033] More specifically, guides 22 are provided along the upstream partition wall 13 and the downstream partition wall 14 to guide the dust removal screen 20, and a rotating body 23 equipped with a pair of sprockets 24 is supported above these guides 22. The dust removal screen 20 is equipped with an endless chain 21 along its opening edge, and this endless chain 21 is stretched across the rotating body 23 and the guides 22. A motor 25 is positioned to the side of the rotating body 23, and a drive chain 28 is stretched between a sprocket 26 mounted on the output shaft of the motor 25 and a sprocket 27 mounted on the rotation shaft of the rotating body 23. In other words, the motor 25 rotates the rotating body 23, and as the rotating body 23 rotates, the dust removal screen 20 rotates and moves.

[0034] The spray device 30 comprises a spray nozzle 32 and a trough 33. As shown in Figure 2, the spray nozzle 32 is positioned directly above the rotating body 23. A branch pipe 47, which branches off from the cleaning pipe 48 of the sand removal device 4 (described later), is connected to the spray nozzle 32, and flowing water from the water channel 11 is supplied through the branch pipe 47. The spray nozzle 32 sprays the water supplied through the branch pipe 47 onto the dust removal screen 20 from the outside. As a result, the captured impurities are removed from the dust removal screen 20 by water pressure.

[0035] The trough 33 is a guide member for foreign matter and is positioned below the spray device 30, flanking the dust removal screen 20. The trough 33 is designed to collect foreign matter that falls off the dust removal screen 20 due to the water sprayed from the spray device 30 and guide it to the collection box 34.

[0036] In the apparatus body 2 described above, the water flowing through the water channel 11 is guided to the inside of the dust removal screen 20 through the opening 13a of the upstream partition wall 13, as shown by the white arrow in Figure 2, and flows downstream through the circumferential surface of the dust removal screen 20. When the water flows through the inner circumferential surface of the dust removal screen 20, impurities in the water are captured by the dust removal screen 20.

[0037] Meanwhile, the dust removal screen 20 rotates due to the driving force of the motor 25. As the dust removal screen 20 rotates, the captured debris is lifted out of the water and carried to the upper end of the screen (the position of the rotating body 23). Then, water is sprayed from the spray nozzle 32, removing the debris from the dust removal screen 20 and collecting it in the trough 33. The collected debris, along with the water sprayed from the spray nozzle 32, is guided along the trough 33 to the collection box 34, and then carried out of the waterway by an operator.

[0038] (Configuration of the sand removal device 4) The sediment removal device 4 is an auxiliary piece of equipment for the main body 2, specifically for removing sediment that accumulates on the bottom wall surface 11b (seabed) of the waterway 11 below the main body 2, and more precisely below the dust removal screen 20. As shown in Figures 3 and 4, the sediment removal device 4 includes a sediment removal system 4A and a cleaning system 4B. The sediment removal system 4A is equipment that removes sediment accumulated on the bottom wall surface 11b through piping, and the cleaning system 4B is equipment that cleans the inside of the piping that constitutes the sediment removal system 4A.

[0039] The sediment removal system 4A comprises a perforated pipe 40 arranged along the bottom wall surface 11b of the waterway 11, a sediment removal pipe 43 connected to the perforated pipe 40, and a sediment removal pump 44 installed in the middle of the sediment removal pipe 43. The perforated pipe 40 and the sediment removal pipe 43 are made of cylindrical pipes of resin or metal.

[0040] As shown in Figure 4, the perforated pipe 40 has, in a plan view, a non-perforated base pipe section 41 that extends in the longitudinal direction of the waterway 11 outside the main body of the device 2, and a perforated section 42 that extends in the width direction of the waterway 11 from the upstream end (left end in Figure 3) of the base pipe section.

[0041] The perforated section 42 is positioned to cross the width direction of the water channel 11, approximately in the center of the dust removal screen 20. The perforated section 42 is provided with a plurality of openings 42a that connect the inside and outside. Each opening 42a is provided in a position suitable for sucking up sediment and has a shape suitable for sucking up sediment. For example, the plurality of openings 42a are provided at regular intervals in the longitudinal direction of the perforated section 42. The plurality of openings 42a may be provided so that the spacing between them narrows towards the front of the perforated section 42. In addition, each opening 42a is provided in a position facing the bottom wall surface 11b of the water channel 11, and the shape of each opening 42a is either a round hole or an elongated hole that is elongated in the longitudinal direction of the perforated section 42.

[0042] Furthermore, multiple perforated pipes 40 may be arranged in parallel along the bottom wall surface 11b. In this case, the perforated pipe 40 may be configured to have multiple perforated sections 42 that branch off from a single base pipe section 41 and extend parallel to each other. Also, the perforated sections 42 may be provided to extend in the longitudinal direction of the waterway 11.

[0043] As shown in Figure 3, the sediment discharge pipe 43 is connected to the base section 41 of the perforated pipe 40 via a three-way pipe 38. The sediment discharge pipe 43 extends upward from the position of the three-way pipe 38 along the main body 2 of the device, bends downstream above the waterway 11, and is connected to the sediment separator 6. A sediment discharge pump 44 and an on-off valve 43a are located in the middle of this sediment discharge pipe 43. The sediment discharge pump 44 is an electrically operated wastewater pump capable of pumping sediment together with the flowing water. The sediment discharge pump 44 is located near the bottom of the water and is fixed to the main frame 12 of the main body 2 of the device 2 via a pump support base 45. The on-off valve 43a is located near the sediment separator 6 in the sediment discharge pipe 43.

[0044] On the other hand, as shown in Figure 3, the cleaning system 4B includes a cleaning pump 46 installed on the bottom wall surface 11b of the waterway 11 via a pump support base 49, a cleaning pipe 48 with one end connected to the cleaning pump 46, and a branch pipe 47 branching off from the cleaning pipe 48.

[0045] The cleaning pipe 48 is connected to the three-way pipe 38. This allows the cleaning pipe 48, the sand discharge pipe 43, and the perforated pipe 40 (base section 41) to communicate with each other via the three-way pipe 38. Reference numeral 48a in the figure indicates an on / off valve interposed in the cleaning pipe 48 near the branching portion of the branch pipe 47.

[0046] The branch pipe 47 is connected to the spray nozzle 32 of the spray device 30. An on / off valve 47a is interposed near the connection point between the branch pipe 47 and the spray device 30.

[0047] With the above configuration, the sand removal device 4 can selectively perform a sand removal process to remove sediment accumulated on the bottom of the waterway 11 and a cleaning process to clean the perforated pipe 40 or the sand removal pipe 43, in accordance with the switching of the on / off valves 43a, 47a, and 48a and the switching of the operation of the pumps 44 and 46, and can also supply flowing water to the spray device 30.

[0048] Figure 5 is a cross-sectional view showing the dust removal device 1 during sediment removal. During sediment removal, the on-off valve 43a is opened while the on-off valve 48a is closed, and in this state, only the sediment removal pump 44 operates. As a result, the sediment accumulated on the bottom of the water is sucked into the perforated pipe 40 along with the flowing water through the opening 42a and sent to the sediment separator 6 located outside the waterway 11 through the sediment removal pipe 43. The sediment separator 6 is a so-called solid-liquid separator, and the muddy water sucked from the waterway 11 through the sediment removal pipe 43 is separated into sediment and water in the sediment separator 6. As a result, the sediment is recovered and the water is returned to the waterway 11.

[0049] Figure 6 is a cross-sectional view showing the dust removal device 1 during the cleaning process. During the cleaning process, the on-off valve 48a is opened while the on-off valves 43a and 47a are closed, and in this state only the cleaning pump 46 operates. As a result, the water flowing in the water channel 11 is supplied to the perforated pipe 40 through the cleaning pipe 48, and the inside of the perforated pipe 40 is cleaned. In other words, the water flowing in the water channel 11 is used as cleaning water to clean the inside of the perforated pipe 40. In some cases, the inside of the perforated pipe 40 may be clogged with compacted sediment sucked in through the opening 42a. When water is pumped into the perforated pipe 40 by the cleaning process, such blockages inside the perforated pipe 40 are cleared.

[0050] Here, the cleaning process for the perforated pipe 40 has been described, but the cleaning process for the sand discharge pipe 43 is also possible. Although not shown in the diagram, in this case, the on-off valves 43a and 48a are opened while the on-off valve 47a is closed, and in this state, both the sand discharge pump 44 and the cleaning pump 46 operate simultaneously. As a result, the water flowing in the waterway 11 is pressurized and sent to the sand discharge pipe 43 through the cleaning pipe 48, and the inside of the sand discharge pipe 43 is cleaned. In this case, the output balance between the sand discharge pump 44 and the cleaning pump 46 is adjusted so that the water flowing is introduced into the sand discharge pipe 43 through the cleaning pipe 48 and the three-way pipe 38. For example, the output of the cleaning pump 46 is adjusted so that it is greater than the output of the sand discharge pump 44. In the following description, when "cleaning process" is mentioned, it refers to the process of cleaning the perforated pipe 40 (see Figure 6), unless otherwise specified.

[0051] Figure 7 is a cross-sectional view showing the dust removal device 1 when flowing water is supplied to the spray device 30. When flowing water is supplied, the on-off valve 47a is opened while the on-off valve 48a is closed, and in this state only the cleaning pump 46 operates. As a result, the flowing water in the water channel 11 is supplied to the spray device 30 through the cleaning pipe 48 and branch pipe 47 and sprayed from the spray nozzle 32 onto the dust removal screen 20. As a result, as described above, the captured impurities are removed from the dust removal screen 20 by water pressure.

[0052] In this example, the cleaning pipe 48 and the branch pipe 47 correspond to the "cleaning pipe" of the present invention, and the on-off valves 47a and 48a correspond to the "switching valve" of the present invention. The state in which the perforated pipe 40 and the cleaning pipe 48 are in communication (shown in Figure 6) corresponds to the "first communication state" of the present invention, and the state in which the spray device 30 (injection nozzle 32) and the branch pipe 47 are in communication (shown in Figure 7) corresponds to the "second communication state" of the present invention.

[0053] (Configuration of the control unit 5) The control unit 5 comprehensively controls the operation of the main unit 2 and the sand removal device 4 as described above. The control unit 5 is composed of one or more ICs and other memory such as a CPU, ROM, RAM, etc., which act as a processor. The processor may be configured to perform processing using multiple CPUs or hardware circuits such as ASICs in addition to a single CPU, or it may be configured so that the CPU and hardware circuits cooperate to perform processing.

[0054] As shown in Figure 1, the control unit 5 comprises a processing control unit 50, a storage unit 51, a processing condition setting unit 52, a data acquisition unit 53 (corresponding to the "information acquisition unit" of the present invention), and a learning unit 54.

[0055] The processing control unit 50 controls the main body of the device 2 to perform a debris removal process in which debris is captured by the dust removal screen 20 and removed from the waterway 11, and also controls the sand discharge device 4 to perform the sand discharge and washing processes described above based on the processing conditions set by the processing condition setting unit 52. Specifically, the processing control unit 50 controls the pumps 44, 46 and on-off valves 43a, 47a, 48a of the sand discharge device 4 according to the processing conditions to perform the suction operation of soil and sand by the perforated pipe 40 and the supply operation of flowing water (washing water) to the perforated pipe 40 or the sand discharge pipe 43.

[0056] The processing condition setting unit 52 sets the processing conditions, which are the operating conditions for executing the sand removal and washing processes. Specifically, it sets the start time of the process and the duration of the process (referred to as the execution time) as processing conditions for each of the sand removal and washing processes. These processing conditions may be taught by the operator via an input unit (not shown in the diagram) or may be obtained as a result of machine learning, as described later. The initial values ​​of the processing conditions are usually taught by the operator via an input unit (not shown in the diagram).

[0057] The storage unit 51 updates and stores the processing conditions set by the processing condition setting unit 52. The storage unit 51 stores the sand removal processing conditions (start time / execution time), which are the conditions for sand removal processing, and the washing processing conditions (start time / execution time), which are the conditions for washing processing. For example, the storage unit 51 stores the sand removal processing conditions, which stipulate that sand removal processing will be performed for 20 minutes at 9:00 and 15:00 each day, and the washing processing conditions, which stipulate that washing processing will be performed for 10 minutes at 10:00 and 16:00 each day. Unless otherwise specified, the term "processing conditions" in the following description includes both the sand removal processing conditions and the washing processing conditions.

[0058] The data acquisition unit 53 acquires the information necessary for machine learning by the learning unit 54. Figure 8 is a system configuration diagram of the dust removal device 1. As shown in the figure, the dust removal device 1 is equipped with multiple sensors, etc., that acquire the information necessary for machine learning by the learning unit 54. Specifically, it is equipped with a flow rate sensor SE1, a water level sensor SE2, a sediment sensor SE3, and ammeters SE4 and SE5. The flow rate sensor SE1 is located on the upstream side of the device body 2 and detects the amount of flowing water. The water level sensors SE2 are located on the upstream and downstream sides of the device body 2, respectively, and detect the water level of the flowing water. The sediment sensor SE3 detects the amount of sediment accumulated at the bottom of the waterway 11. The ammeter SE4 detects the drive current value of the sediment removal pump 44, and the ammeter SE5 detects the drive current value of the washing pump 46. The data acquisition unit 53 acquires the information input from these sensors, etc. SE1 to SE5, namely the flow rate of the waterway 11, the water level, the amount of sediment accumulated, and the drive current value.

[0059] Furthermore, the specific configuration of each sensor SE1 to SE5 is not limited as long as it is capable of detecting the data described above. For example, the sediment sensor SE3 may be an ultrasonic sensor that detects the amount of sediment by emitting ultrasonic waves toward the bottom wall surface 11b of the waterway 11 and reading the reflected signal, or it may be a camera that images the accumulated sediment.

[0060] The data acquired via the data acquisition unit 53 is stored cumulatively in the storage unit 51. At this time, data on the flow rate, water level, and amount of sediment accumulated in the waterway 11 are acquired at predetermined time intervals and stored in the storage unit 51, regardless of whether the main unit 2 or the sediment removal device 4 is operating or not. In contrast, data on the drive current value of the sediment removal pump 44 is acquired only when the sediment removal process is being performed, and data on the drive current value of the washing pump 46 is acquired only when the washing process is being performed, and each is stored in the storage unit 51.

[0061] The dust removal device 1 is further equipped with a clock SE6, and the data acquisition unit 53 acquires time information input from the clock SE6. The time information is information that serves as a trigger when the processing control unit 50 executes sand removal and washing processes based on the processing conditions.

[0062] The learning unit 54 performs a learning process to learn the operation of the sand removal device 4. When setting the processing conditions by machine learning, the learning unit 54 takes into consideration the information (data) acquired via the data acquisition unit 53 and stored in the storage unit 51, and learns the optimal processing conditions for operating the sand removal device 4. That is, it learns when and for how long the sand removal process should be performed, and when and for how long the washing process should be performed.

[0063] [Operation control of dust removal device 1] Figure 9 is a flowchart showing an example of the operation control of the dust removal device 1. First, the processing control unit 50 reads the processing conditions (step S1) and determines whether the current time is the sand removal processing time, that is, whether it is the start time of the sand removal processing as defined in the sand removal processing conditions (step S3). If the answer is Yes, the processing control unit 50 controls the sand removal device 4 to start the sand removal processing, and the data acquisition unit 53 acquires the drive current value data input from the ammeter SE4 and stores it in the storage unit 51 (step S5). If the answer in step S3 is No, the process proceeds to step S11.

[0064] When the processing time has elapsed, that is, when the execution time regulated as a condition for sand removal processing has elapsed (Yes in step S7), the processing control unit 50 terminates the sand removal processing (step S9).

[0065] Next, the processing control unit 50 determines whether the current time is the cleaning time, that is, whether it is the start time of the cleaning process as defined in the cleaning conditions (step S11). If the answer is Yes, the processing control unit 50 controls the sand removal device 4 to start the cleaning process, and the data acquisition unit 53 acquires the drive current value data input from the ammeter SE5 and stores it in the storage unit 51 (step S13). If the answer in step S11 is No, the process proceeds to step S3.

[0066] When the processing time has elapsed, that is, when the execution time specified as a cleaning process condition has elapsed (Yes in step S15), the processing control unit 50 terminates the cleaning process (step S17).

[0067] When the washing process is completed, the processing control unit 50 determines whether all processes specified as processing conditions have been completed, that is, whether the final processing of the sand removal process and the washing process has been completed (step S19). If the answer is No, the process proceeds to step S3. On the other hand, if the answer is Yes, the learning unit 54 refers to the information obtained from the ammeter SE4 during the sand removal process, i.e., the drive current value data of the sand removal pump 44, the information obtained from the ammeter SE5 during the washing process, i.e., the drive current value data of the washing pump 46, and the information obtained from the flow sensor SE1, water level sensor SE2, and sediment accumulation sensor SE3, respectively, i.e., the flow rate, water level, and sediment accumulation data of the waterway 11, and based on this data, performs a learning process to optimize the processing conditions (step S21). The learning method is not particularly limited, and for example, "supervised learning," "unsupervised learning," and "reinforcement learning" can be employed.

[0068] Specifically, the learning unit 54 learns the optimal start time and execution time for sediment removal by estimating the amount of sediment accumulated from the drive current value data of the washing pump 46. For example, if the amount of sediment accumulated is relatively large, the learning unit 54 shortens the interval between sediment removal treatments and / or lengthens the execution time of the sediment removal treatments compared to when the amount is small. In this way, it learns the optimal start time and execution time for sediment removal treatments so that the amount of sediment accumulated does not exceed a predetermined amount.

[0069] In this case, the learning unit 54 determines the change in the amount of sediment due to the sediment removal treatment based on the sediment amount data obtained from the sediment sensor SE3. The change in the amount of sediment due to the sediment removal treatment is information that can be used to evaluate the effectiveness of the sediment removal treatment, and the learning unit 54 takes this change in sediment amount into consideration when learning.

[0070] Furthermore, the amount of sediment accumulating below the main body of the device 2 tends to increase as the water volume in the waterway 11 increases and as the amount of impurities captured by the dust removal screen 20 increases. For this reason, the learning unit 54 takes into consideration the flow rate data obtained from the flow rate sensor SE1 during the sediment removal process when learning. In addition, the learning unit 54 determines the water level difference between the upstream and downstream sides of the main body of the device 2 based on the water level data obtained from each water level sensor SE2 during the sediment removal process. Since the water level difference between the upstream and downstream sides of the main body of the device 2 changes according to the amount of impurities captured by the dust removal screen 20, the learning unit 54 takes this water level difference into consideration when learning.

[0071] Similarly, the learning unit 54 learns the optimal start time and execution time for the cleaning process by estimating the degree of clogging (dirtiness) of the sediment in the perforated pipe 40 from the drive current value data of the cleaning pump 46. For example, if the degree of clogging of the perforated pipe 40 is relatively high, the learning unit 54 shortens the interval between the start times of the cleaning process and / or lengthens the execution time of the cleaning process compared to when the degree of clogging is relatively low. In this way, the learning unit 54 learns the optimal start time and execution time for the sediment removal process so that the degree of clogging of the sediment in the perforated pipe 40 falls below a certain level.

[0072] When the learning process of the learning unit 54 is completed, the processing condition setting unit 52 stores the learning results, i.e., the final obtained processing conditions, in the storage unit 51 (step S23), and then the process proceeds to step S1.

[0073] [effect] As described above, the dust removal device 1 of this embodiment includes a device body 2 that performs a debris removal process to capture debris in the flowing water of the waterway 11 and remove it to the outside of the waterway 11, and a sand removal device 4 that performs a sand removal process to remove sediment accumulated on the bottom wall surface 11b of the waterway 11. The sand removal device 4 includes a perforated pipe 40 arranged along the bottom wall surface 11b of the waterway 11, and is configured to remove the sediment accumulated on the bottom wall surface 11b by sucking it up and passing it through the perforated pipe 40. Therefore, the dust removal device 1 of this embodiment can remove sediment accumulated on the bottom of the waterway below the device body 2 without dispersing it. Accordingly, it is possible to remove sediment accumulated below the device body 2 without the inconveniences of conventional devices, such as dispersed sediment entering the mechanism of the dust removal screen and causing trouble, or sediment and minute debris contained in the sediment flowing downstream and adversely affecting downstream facilities.

[0074] In particular, the sediment removal device 4 includes a sediment removal pump 44 that sucks up sediment through a perforated pipe 40, and a sediment removal pipe 43 that guides the sediment sucked up through the perforated pipe 40 by the operation of the sediment removal pump 44 to the outside of the waterway 11. Therefore, the sediment sucked up through the perforated pipe 40 can be reliably removed to the outside of the waterway 11.

[0075] Furthermore, the sand removal device 4 further includes a cleaning pipe 48 connected to the perforated pipe 40 and the sand removal pipe 43, and a cleaning pump 46 capable of supplying the flowing water from the waterway 11 to the perforated pipe 40 and the sand removal pipe 43 through the cleaning pipe 48. The device is configured to perform a cleaning process by supplying the flowing water to the perforated pipe 40 and the sand removal pipe 43 as cleaning water. Therefore, according to the dust removal device 1 of this embodiment, it is possible to eliminate clogging of sediment in the perforated pipe 40 and the sand removal pipe 43, or to suppress the clogging of sediment in the perforated pipe 40 and the sand removal pipe 43. In other words, before the next sand removal process, the compacted sediment clogging the perforated pipe 40 or the sand removal pipe 43 can be loosened and removed with cleaning water, so that the sand removal process can be performed continuously and stably.

[0076] Furthermore, the cleaning pipe 48 is connected to the spray device 30 (injection nozzle 32) of the main body of the device 2 via a branch pipe 47, and the sand removal device 4 is further equipped with on-off valves 47a and 48a that switch the communication state between the pipes between a state in which the perforated pipe 40 (or sand removal pipe 43) and the cleaning pipe 48 are in communication, and a state in which the spray device 30 and the cleaning pipe 48 are in communication. In other words, the sand removal device 4 can switch between a state in which cleaning water pumped by the cleaning pump 46 is supplied to the perforated pipe 40 (or sand removal pipe 43) and a state in which it is supplied to the spray device 30 (injection nozzle 32). As a result, a rational configuration is achieved in which the cleaning pipe 48 and the cleaning pump 46 are shared as equipment for cleaning the perforated pipe 40, etc., and as equipment for removing foreign matter from the dust removal screen 20 in the main body of the device 2.

[0077] Furthermore, the dust removal device 1 of the embodiment further comprises a processing condition setting unit 52 for setting processing conditions (sand removal processing conditions) for sand removal, a processing control unit 50 for controlling the sand removal device 4 and executing sand removal processing based on the sand removal processing conditions, a data acquisition unit 53 (information acquisition unit) for acquiring data on the drive current value input from the ammeter SE4 when sand removal processing is performed (information indicating the load of the sand removal pump 44), and a learning unit 54 for executing a learning process to optimize the sand removal processing conditions based on the data acquired by the data acquisition unit 53. The processing condition setting unit 52 is configured to update the sand removal processing conditions based on the learning results of the learning unit 54.

[0078] Therefore, according to the dust removal device 1 of this embodiment, the sand removal treatment conditions can be optimized, specifically, the start time of sand removal treatment and the execution time of sand removal treatment per day can be optimized. As a result, it becomes possible to perform sand removal treatment more efficiently and effectively so that a specified amount of sediment does not accumulate below the device body 2. In this case, the learning unit 54 takes into consideration not only the drive current value data input from the ammeter SE45, but also the flow rate data obtained from the flow rate sensor SE1. Furthermore, the learning unit 54 determines the water level difference between the upstream and downstream sides of the device body 2 based on the water level data obtained from each water level sensor SE2, and takes into consideration the data of this water level difference. Therefore, the reliability of learning the sand removal treatment conditions is higher compared to when this information is not taken into consideration.

[0079] Furthermore, in the dust removal device 1 of this embodiment, the processing condition setting unit 52 further sets the processing conditions (washing processing conditions) for the washing process, the processing control unit 50 further executes the washing process based on the washing processing conditions, the data acquisition unit 53 acquires data of the drive current value input from the ammeter SE5 (information indicating the load of the washing pump 46), the learning unit 54 executes a learning process to optimize the sand removal processing conditions based on the data acquired by the data acquisition unit 53, and the processing condition setting unit 52 is configured to update the washing processing conditions based on the learning results of the learning unit 54.

[0080] Therefore, according to the dust removal device 1 of this embodiment, the cleaning treatment conditions can be optimized, specifically, the start time of the cleaning treatment and the execution time of the cleaning treatment per day can be optimized. As a result, the sand removal treatment can be carried out more efficiently and effectively so that the degree of clogging of sediment in the perforated pipe 40 does not exceed a certain level.

[0081] [Differentiation] The dust removal device 1 described above is an example of a preferred embodiment of the dust removal device according to the present invention, and the specific configuration of the dust removal device 1 (device body 2 and sand removal device 4) can be modified as appropriate without departing from the spirit of the present invention. For example, configurations such as (1) to (6) below, or configurations that combine the configurations of (1) to (6) as appropriate, can be adopted.

[0082] (1) In this embodiment, the data acquisition unit 53 acquires measurement data from the flow rate sensor SE1, water level sensor SE2, sediment accumulation sensor SE3, and ammeters SE4 and SE5 as sediment removal processing information and washing processing information of the present invention, namely the flow rate of the waterway 11, the water level, the amount of sediment accumulated, and the drive current values ​​of the pumps 44 and 46. The learning unit 54 then performs a learning process to optimize the "start time" and "execution time" of the sediment removal processing and washing processing, respectively, based on this information. However, the information acquired by the data acquisition unit 53, i.e., the information used in the learning process, is not limited to the information disclosed in this embodiment and can be changed as appropriate.

[0083] (2) In the embodiment, the processing conditions (sand removal processing conditions and washing processing conditions) are "time" and "execution time," but may also include the month and day. That is, the processing conditions may be "execution timing (month, day, time)." In this case, the data acquisition unit 53 may acquire information on at least one of the season (calendar) and weather in addition to the information disclosed in the embodiment, and the learning unit 54 may learn the "execution timing" and "execution time" based on this information. In other words, since the flow rate and water level of the waterway 11 change depending on the season and weather, by taking this information into consideration, it becomes possible to learn the optimal "execution timing" and "execution time," and to perform sand removal processing and washing processing in appropriate amounts at appropriate times.

[0084] (3) In this embodiment, the learning unit 54 performs learning processing for both the sand removal processing conditions and the washing processing conditions. However, the learning unit 54 may be configured to learn only one of the processing conditions, the sand removal processing conditions or the washing processing conditions.

[0085] (4) Although not specifically mentioned in the embodiment, the learning unit 54 may be configured to learn the "start time" and "execution time" based on the control information of the device body 2 by the processing control unit 50. For example, if the device body 2 is operated intermittently, the amount of sediment deposited changes during or after the operation of the device body 2. Therefore, by learning the "start time" and "execution time" in consideration of the operation timing of the device body 2, it becomes possible to learn a more optimal "start time" and "execution time".

[0086] (5) The cleaning process (steps S12, S3) in the operation control shown in Figure 9 is the cleaning process of the perforated pipe 40 (see Figure 6), and does not apply to the cleaning process of the sand discharge pipe 43. However, the same cleaning conditions as for the cleaning process of the perforated pipe 40 may be defined for the cleaning process of the sand discharge pipe 43, and the processing condition setting unit 52 may execute the cleaning process based on these cleaning conditions, while the learning unit 54 may execute a learning process to optimize the cleaning conditions for the sand discharge pipe 43.

[0087] (6) The main body 2 of the embodiment is equipped with an endless dust removal screen 20 (capture member) that captures impurities, and removes impurities from the water channel 11 as the dust removal screen 20 rotates. However, the main body 2 may also be configured to have a plate-shaped screen (capture member) positioned to obstruct the water channel 11, and to remove impurities captured by the screen by scraping them up along the screen with a rake-like member called a rake. In other words, the main body 2 is equipped with a supplement member that captures impurities in the flowing water of the water channel 11, and is configured to perform an impurity removal process in which impurities are captured by the supplement member and removed from the water channel, so the specific configuration is not limited to the configuration of the embodiment. [Explanation of Symbols]

[0088] 1 Dust removal device 2. Main unit of the device 4 Sand removal device 4A Sand removal system 4B Cleaning System 5. Control Unit 11 Waterways 20. Dust removal screen (capture component) 30 Spray device 32 spray nozzles 40 Perforated pipe 42a opening 43 Sand discharge pipe 47 Branch pipe (washing pipe) 48. Cleaning piping (cleaning pipe) 50 Processing Control Unit 52 Processing Condition Setting Unit 53 Data Acquisition Unit (Information Acquisition Unit) 54 Learning Department

Claims

1. The device body is equipped with a capturing member that is placed in a waterway to capture impurities in the flowing water, and performs an impurity removal process that captures impurities with the capturing member and removes them from the waterway. A dust removal device comprising a sand removal device that includes a perforated pipe having multiple openings and positioned below the main body of the device along the bottom surface of the waterway, and which performs a sand removal process that removes sediment accumulated on the bottom surface by sucking it up from the openings and removing it through the perforated pipe.

2. In the dust removal device according to claim 1, A dust removal device characterized in that a plurality of perforated pipes are arranged in parallel along the bottom surface of the waterway.

3. In the dust removal device according to claim 1 or 2, The aforementioned sand removal device is A sand removal pump that sucks up soil and sand through the perforated pipe, A dust removal device characterized by comprising a sand removal pump in the middle, and a sand removal pipe that guides the sediment sucked in through the perforated pipe out of the waterway.

4. In the dust removal device according to claim 3, The dust removal device further comprises a washing pipe connected to the perforated pipe and a washing pump capable of supplying flowing water in the waterway to the perforated pipe through the washing pipe, and is configured to perform a washing process in which the perforated pipe is washed by supplying the flowing water to the perforated pipe as washing water.

5. In the dust removal device according to claim 4, The apparatus body further comprises a spray device including a spray nozzle for spraying water onto the supplementary member and a trough for containing impurities removed from the supplementary member by the pressure of the water sprayed from the spray nozzle, The cleaning pipe is further connected to the spray nozzle, The dust removal device is characterized by further comprising a switching valve that can switch the communication state between the pipes between a first communication state in which the perforated pipe and the washing pipe are in communication and a second communication state in which the injection nozzle and the washing pipe are in communication.

6. In the dust removal device according to claim 4, A processing condition setting unit sets the sand removal processing conditions, which are the operating conditions when performing the aforementioned sand removal processing, A processing control unit that controls the sand removal device and executes the sand removal process based on the sand removal processing conditions, An information acquisition unit that acquires sand removal processing information, which includes at least the load of the sand removal pump when the sand removal processing is performed, The system further comprises a learning unit that performs a learning process to optimize the sand removal conditions based on the sand removal information acquired by the information acquisition unit, The dust removal device is characterized in that the processing condition setting unit updates the sand removal processing conditions based on the learning results of the learning unit.

7. In the dust removal device according to claim 6, The dust removal device is characterized in that the sand removal treatment conditions include at least one of the timing and duration of the sand removal treatment.

8. In the dust removal device according to claim 6, The processing condition setting unit further sets the cleaning processing conditions, which are the operating conditions when executing the cleaning process. The processing control unit further executes the cleaning process based on the cleaning process conditions. The information acquisition unit further acquires cleaning process information, which includes at least the load of the cleaning pump when the cleaning process is performed. The learning unit further performs a learning process to optimize the cleaning conditions based on the cleaning process information acquired by the information acquisition unit. The dust removal device is characterized in that the processing condition setting unit updates the cleaning processing conditions based on the learning results of the learning unit.

9. In the dust removal device according to claim 8, The dust removal device is characterized in that the cleaning treatment conditions include at least one of the timing and duration of the cleaning treatment.

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