275results about "Irrigation ditches" patented technology

The invention relates to the technical field of data processing, in particular to a rice field gate anti-clogging intelligent monitoring control method, which comprises the following steps of: acquiring multi-dimensional monitoring data of a gate at each monitoring moment in real time, and forming a multi-dimensional monitoring data sequence by the multi-dimensional monitoring data of the gate at each monitoring moment in each operation process; one gate operation process corresponds to one multi-dimensional monitoring data sequence; for any gate operation process, obtaining an optimized gate clogging coefficient of any gate operation process according to the multi-dimensional monitoring data sequence corresponding to any gate operation process; the method comprises the steps of obtaining an optimized gate clogging coefficient of each gate operation process, obtaining a gate clogging trend index by using the optimized gate clogging coefficient of each gate operation process, and carrying out gate clogging prevention intelligent monitoring control according to the optimized gate clogging coefficient and the gate clogging trend index of the current gate operation process. And early-stage, quantitative and trend monitoring of the clogging state of the gate is realized.

The invention belongs to the field of agriculture, and particularly relates to a rice field canal mouth irrigation and drainage gate opening and closing control method based on motor pulse and torque. Increasing the pulse of the motor to continuously move the gate and reading the torque of the motor; and judging whether the torque of the motor exceeds a set resistance threshold value or not, and if so, entering the next step and the like. The pulse number of the motor is matched with the rotation torque of the gate, the state of the water gate is judged according to the obtained pulse state of the motor and the returned torque, so that the problems existing in the operation process of the rice field irrigation and drainage gate are solved, and the method has the advantages of being high in efficiency, saving time and labor and not prone to making mistakes.

The invention relates to the technical field of agricultural water conservancy control, in particular to a high-standard farmland intelligent irrigation and drainage pump gate cooperative remote control method and system, and the method comprises the steps: generating a cooperative control instruction which restrains the power of a water pump and the opening and closing of a gate at the same time based on farmland water level information; establishing a conflict relationship between the response delay time of the water pump and the action delay time of the gate, and disassembling the cooperative control instruction into control sub-instructions for the water pump and the gate; when the soil under-saturation signal is continuously detected, the distribution adjustment control sub-instruction adjusts the output power of a water pump and controls the opening degree of an irrigation gate; when the water level overrun signal is continuously detected, the control sub-instruction is adjusted to control the opening degree of the drainage gate, and the output power of the water pump is reversely adjusted based on a backwater shock wave model triggered by the gate opening degree; the farmland water level information is detected in real time, and a cooperative control instruction is reconstructed. According to the invention, the problem of water level oscillation caused by misalignment of cooperative control of the water pump and the gate due to response time delay difference is effectively solved.

This application discloses a comprehensive treatment method for salinized soil in semi-arid region, comprises: stripping and collecting the topsoil; spreading sandy soil and / or loess soil as a imported soil layer; spreading an anti-seepage layer, a salt barrier layer and a membrane layer successively on the imported soil layer; mixing clay into the topsoil to obtain mixed soil; blending saline-alkali land conditioner with the mixed soil to obtain planted soil; spreading the planted soil on the membrane layer to obtain a planting layer. The method combines physical, hydraulic, chemical and biological remediation methods to comprehensively manage saline-alkali soil in semi-arid areas. It consumes less water resources, has a shorter treatment cycle, shows quick results, is conducive to plant growth, and can effectively inhibit the return of salt.

The utility model relates to a channel water-saving gate device based on buoyancy self-adjustment, the channel water-saving gate device based on buoyancy self-adjustment comprises a gate groove, a gate and a buoyancy linkage structure, the buoyancy linkage structure comprises a fixing rod arranged on the backwater side of the gate, the fixing rod is rotatably connected with a plurality of levers, the top of the gate is provided with a connecting handle, and the connecting handle is connected with the gate. The first connecting end, close to the gate, of the lever movably penetrates through the connecting handle and then is connected with a first limiting block, and the second connecting end, away from the gate, of the lever is connected with a first floating ball through a connecting rod so that the first floating ball can drive the gate to ascend and descend along the gate groove along with ascending and descending of the water level of the backwater side of the gate. A plurality of second floating balls are connected to the bottom of the gate, and when the gate is completely closed, the second floating balls are higher than the first floating balls, so that when the water level of the upstream side of the gate rises to the second floating balls, the gate can be opened under the action of the second floating balls to drain water. The channel water-saving gate device not only can accurately control the irrigation water level, but also has the flood discharge capacity.

The invention relates to the technical field of agricultural irrigation, in particular to a farmland irrigation drainage dike which comprises a drainage channel, dikes are installed on the inner bottom wall of the drainage channel in the water flow direction at intervals, the height of the dikes is 10 centimeters higher than the height of a water inlet of the drainage channel, drainage pipes are installed in the dikes in a penetrating mode, and gates are installed on the drainage channel. A filtering part is arranged at a water inlet of the drainage channel; the drainage channel is divided into a plurality of independent irrigation units through the arrangement of the multiple dams, each dam is 10 centimeters higher than the water inlet, when the water level reaches the height of the dam, redundant water automatically overflows, the water amount can be flexibly adjusted according to the water requirement of different crops, it is ensured that water enters each land evenly, and uneven drought and flood are avoided.

The utility model relates to the technical field of irrigation and water conservancy engineering, in particular to an irrigation and water conservancy diversion device which comprises a gate seat fixedly installed between the inner walls of the two sides of a canal, the gate seat is of a hollow structure, a filter plate is embedded in one side wall of the gate seat, and a collecting box is arranged on the side, away from the gate seat, of the filter plate in a sliding fit mode. Driving assemblies for driving the collecting box to ascend and descend are arranged on the inner walls of the two sides of the canal, at least two water outlets are formed in the other side wall of the gate base in a penetrating mode, and gate plates are arranged in the positions, corresponding to the water outlets, in the gate base in a sliding mode. The top of the gate seat is provided with a lifting assembly for driving each gate plate to ascend and descend to control the corresponding water outlet to be opened and closed. The filter plate cleaning device is reasonable in structural design, convenient to operate and capable of automatically cleaning the filter plate without dismounting the filter plate.

The utility model discloses a double-screw water gate, which comprises an outer frame, a storage battery, a photovoltaic panel and a controller, the storage battery, the photovoltaic panel and the controller are positioned on the outer frame, a gate plate is slidably arranged on the inner side of the outer frame, the vertical height of the gate plate is controlled by a lifting mechanism arranged on the outer frame, and an antenna is mounted at the top of the outer frame. An upper limiting sensor and a lower limiting sensor are installed on the inner side of the outer frame. Photovoltaic power supply is adopted, so that the dependence on commercial power is reduced, and the energy consumption and the operation cost are reduced; remote control: remote control is realized through a 4G network, the operation is simple and convenient, and the management efficiency is improved; a radar liquid level meter is connected, the height of the gate is automatically adjusted according to the water level, the irrigation efficiency is improved, and water resources are saved; the circuit board displays the gate height, the battery voltage and the photovoltaic voltage in real time, and monitoring and maintenance are facilitated.

The utility model discloses an intelligent gate integrating a rice field water level monitoring function, which comprises a gate body, a dredging groove, a plurality of groups of plugging components, a plurality of groups of opening and closing components, a water level sensor and a controller, the plugging components are arranged on one side of the gate body at equal intervals, and the opening and closing components are arranged on the other side of the gate body at equal intervals. The opening and closing assemblies are installed on the other side of the gate body at equal intervals, the opening and closing assemblies are connected with the plugging assemblies, the water level sensor is installed on one side of the gate body, the controller is installed on the other side of the gate body, the water level sensor is installed on one side of the gate body, and the controller is installed on the other side of the gate body. The water level of the rice field can be monitored in real time through the water level sensor, and when the water level sensor detects that the water level reaches the preset maximum value, the opening and closing assembly below the water level can be started to work, so that the corresponding blocking assembly is driven to be opened, water is discharged, water can be correspondingly discharged in the first time, and the rice field is prevented from being damaged.

The invention relates to the technical field of prefabricated water channels, in particular to a prefabricated water channel which comprises a left water channel body and a right water channel body, the left water channel body and the right water channel body are spliced and connected, a cover plate is fixed to the top ends of the left water channel body and the right water channel body, and observation holes are formed in the two sides of the cover plate in a penetrating mode; the left canal body is of a regular trapezoidal structure, the right canal body is of an inverted trapezoidal structure, the inner sides of the bottoms of the left canal body and the right canal body are each of an R-angle structure, and the inclination angle between the end face and the horizontal plane is 60 degrees. The end faces of the left canal and the right canal form the inclination angle of 60 degrees with the horizontal plane, construction can be completed only by assembling the prefabricated left canal, the prefabricated right canal and the prefabricated cover plate, and the construction period is greatly shortened; compared with a traditional prefabricated canal, the installation process does not need to depend on large hoisting equipment, the requirement for construction equipment is lowered, manpower and machine input is reduced, and the construction cost is remarkably reduced.

The utility model relates to the technical field of water conservancy irrigation discloses a water conservancy irrigation channel with impurity removing function, including channel body, the buffer filter mechanism of setting in the channel body, channel body includes the side wall of canal bottom and canal bottom both sides, the buffer filter mechanism still includes the arc buffer baffle of setting in the buffer filter space and the opening with water flow direction is opposite, and the interval between buffer baffle end and side plate forms filter mouth, and is equipped with filter plate at filter mouth, through the setting of buffer filter mechanism, filter plate is located at both sides of channel body, avoids the direct action of water flow on filter plate, and reduces the impact load that filter plate receives from the root, on the other hand, under the action of buffer baffle, water flow carries out once buffering, then water flow enters the circuitous space and realizes secondary buffering, thereby reducing water flow kinetic energy, further reduces the impact of water flow on filter plate.

The utility model relates to the technical field of water conservancy irrigation, in particular to a water conservancy irrigation canal. Comprising a canal body assembly, a frame assembly and a flashboard assembly, the canal body assembly comprises an irrigation canal, bolts and a mesh cover plate, the frame assembly comprises a gate frame plate, the flashboard assembly comprises a flashboard, guide columns are symmetrically connected to the inner wall of the gate frame plate, and a water stop bottom plate is connected to the wall body of the lower bottom face of the gate frame plate. The lower end of the gate plate is connected with a water stop base plate, and the end, away from the gate plate, of the water stop base plate is connected with a water stop layer plate. Through arrangement of a guide column, a gate plate can be driven by a lead screw to ascend and descend, so that a filter screen is convenient to maintain and replace, a mesh cover plate is arranged at the top of the irrigation canal, the irrigation canal can have a certain protection effect, meanwhile, impurities are prevented from falling into the irrigation canal to influence water circulation, and the safety performance of the irrigation canal is also improved; and the accident that people fall into water is prevented.

The present application relates to a kind of open channel water distribution equalization control method and system, method includes: according to the maximum water inflow, the total water inflow of total water inflow range is pre-set;All biological treatment units are divided into the fixed water amount group of control water inflow and the free water amount group of not control water inflow;When the water inflow of free water amount group and the water inflow of fixed water amount group reach preset condition, judge the total water inflow range of current needs adjustment and adjust the total water inflow range of current, then adjust the water inflow of fixed water amount group.The setting of group, make part of filter's water inflow be controlled according to total water inflow, then by adjusting the total water inflow range, get the most suitable water distribution mode, when not set total water inflow flow metering equipment in the biological treatment unit in sewage treatment facility, can be realized by the control logic through open channel water distribution mode to each biological treatment unit for more balanced water distribution purpose, finally guarantee the load balance of each biological treatment unit when running.

The field irrigation and drainage gate comprises a gate plate installed in a drainage channel, the gate plate ascends and descends through a height adjusting mechanism, limiting blocks are installed on the inner walls of the two sides of the drainage channel, and the gate plate is arranged between the two limiting blocks in an inserted mode. A composite protection plate is detachably installed on the side, close to the water source, of the gate plate, and the bottom and the two sides of the composite protection plate are in sealed connection with the bottom face and the inner walls of the two sides of the drainage channel correspondingly. The detachable composite protection plate is installed on the side, close to the water source, of the flashboard, water in the drainage channel is blocked through sealing of the composite protection plate and the side wall of the drainage channel, the water and the flashboard are blocked through the composite protection plate, the flashboard is prevented from being damaged due to corrosion of substances in the water, the service life of the flashboard is prolonged, direct replacement of the flashboard is avoided, and cost is reduced. And by utilizing the composite protection function of the composite protection plate, the service life of the composite protection plate can be prolonged, so that the maintenance cost is reduced, and the market prospect is wide.

The utility model relates to the technical field of agricultural equipment, in particular to a detachable anti-blocking gate of a control box. Comprising an installation frame, a control box is assembled in the installation frame, an electric push rod with a downward telescopic end is installed between two steel frames, the electric push rod is electrically connected with the control box, the telescopic end of the electric push rod is connected with a gate plate in sliding fit with the two steel frames, and the two sides of a flow guide frame are each provided with a set of installation bases. Threaded rods are rotationally arranged between the mounting bases on the same side, and a shifting plate arranged in the flow guide frame is arranged between the two threaded rods in a threaded mode. Through the arrangement of the shifting plate, sediments and sundries accumulated on the flow guide frame and attached to the inner wall can be automatically removed along with flowing of water flow, the gate is prevented from being blocked, it is guaranteed that the water flow is unobstructed, meanwhile, the detachable design of the control box is adopted, and the control box can be rapidly disassembled under the low-temperature condition in winter; and the failure rate caused by environmental factors is reduced.

The invention discloses a rectangular channel rotary type water gate integrated flow control device, and belongs to the field of water conservancy projects and channel water transportation and distribution. The equipment comprises a water channel, a gate body, a rotary adjusting mechanism, a worm and turbine transmission pair, a driving motor, a clutch, a crank, a flow meter and a control cabinet. The gate body rotates to adjust the flow cross section, and the defects that a vertical lifting gate is large in turbulent flow and high in head loss are overcome. Large-torque low-speed opening and closing are achieved through worm and turbine transmission, and manual operation under power failure or faults is guaranteed through a clutch and a crank. The control cabinet combines flow and water level detection, and can execute modes of constant flow, proportional shunting, priority channels, seasonal time periods, low power consumption, sand flushing and sand discharging and the like to form closed-loop adjustment. And directional sand discharge can be achieved through the inserting grooves and the separating plates. The structure is modularized and installation and maintenance are simple. The intelligent water gate has the functions of intelligent regulation and emergency redundancy, is suitable for farmland irrigation, municipal channels and multi-branch water delivery, and solves the problems that an existing water gate is inflexible in regulation, difficult to maintain and poor in adaptability.

The invention relates to the technical field of pumps and gates, and discloses prefabricated integrated pump and gate equipment and a manufacturing method thereof.The prefabricated integrated pump and gate equipment comprises a concrete foundation body, a gate frame is pre-buried in the concrete foundation body to be poured together, a liftable gate plate is arranged in the gate frame, and lifting of the gate plate is driven by a hoist; a flashboard channel is formed in the flashboard, a water pump is installed on the water inlet side of the flashboard channel through a flange, a flow guide cover is installed at a water inlet of the water pump, and a flap valve is installed on the water outlet side of the flashboard channel. Flashboard rollers are mounted on two sides of the flashboard, and a gate seal is arranged on the flashboard. The gate embedded part and the gate frame are integrated together and formed at a time through concrete pouring, hoisting in place can be achieved at any time, the tedious embedded part in-place procedure on site is facilitated, and the construction period of a project is greatly shortened; the structure cost of civil engineering is saved, on-site debugging is convenient, the finished product delivery quality is high, the cost advantage is obvious, and application and popularization are convenient.

The invention discloses a construction method of a meadow-wetland composite system water-salt regulation ecological corridor, which comprises the following steps: step 1, landform reconstruction and communication gate construction: excavating a vertical micro-ditch in a meadow-wetland interlaced zone, and constructing an ecological communication gate in the middle section of the micro-ditch; 2, base modification and vegetation construction, namely base modification is carried out on a micro-ditch side slope and an adjacent mud flat, and a water replenishing plan is made according to the monitoring state of the Internet of Things; 3, water-salt coordinated regulation and control: selecting a seedling establishment stage, a jointing stage and a withered and yellow stage to carry out water-salt regulation and control operation; and step 4, salt resource utilization, namely reutilization of harvested vegetation.

The invention relates to the technical field of agricultural hydraulic engineering, and discloses an irrigation system and a maintenance method thereof, the irrigation system comprises a pump station, a water delivery main pipe, a reservoir and a water delivery channel, and the reservoir is preferably formed by transforming a waste desilting basin. The system is provided with a gate valve control system and a flow monitoring system, wherein the gate valve system comprises an access door well arranged along a pipeline and an access valve in the access door well; the flow monitoring system comprises a plurality of flow sensors arranged on the upstream of the access door well. The control module receives flow signals in real time, automatically diagnoses flow abnormity by comparing data of adjacent sensors, and controls upstream and downstream service valves of an abnormal section to be closed so as to achieve rapid isolation. The method comprises the steps of automatic positioning and isolation, stored water discharge, maintenance operation and system recovery. According to the invention, real-time monitoring, accurate positioning and rapid isolation maintenance of the irrigation system fault can be realized, and the maintenance efficiency and the water resource utilization rate are greatly improved.

The utility model provides a high-standard farmland river concrete water-saving irrigation channel which comprises a U-shaped concrete channel, connecting lugs are arranged on the two sides of the top end of the concrete channel, a combined cover plate is arranged on the concrete channel, connecting rings are fixedly installed on the two sides of the combined cover plate, and the connecting lugs are connected with the connecting rings. A mounting bolt is movably inserted in the connecting ring, a connecting hole is vertically formed in the connecting lug, an internal thread sleeve is fixedly embedded in the connecting hole, and the mounting bolt is in threaded connection with the internal thread sleeve. The combined cover plate is arranged on the concrete channel, the two rectangular cover plates are combined together through matching of the inserting rods and the inserting holes, the rectangular cover plates can be fixed to the concrete channel through the connecting rings on the outer sides of the rectangular cover plates, and objects such as soil, leaves and stones are prevented from rolling into the channel to block the channel; and meanwhile, the connecting ring can be used for hoisting the rectangular cover plate to facilitate installation, maintenance and replacement.

The invention belongs to the technical field of irrigation canals, and particularly relates to an agricultural irrigation canal for hydraulic engineering, which comprises a canal body, a sealing strip, a desilting basin and a sand cleaning device, the silt carrying capacity is greatly improved through the U-shaped cross section and the spiral flow guide groove, so that the spacing distance of the desilting basins can be increased, the number of the desilting basins and the number of the sand cleaning devices used in the water channel with the same length are reduced, and the investment cost for constructing the water channel is saved to a certain extent; in addition, the spiral flow guide grooves guide water flow to rotate and enable silt and water to be layered at the same time, specifically, the silt is conveyed forwards close to the inner wall of the channel body under the action of centrifugal force, and the width and depth of the inner wall of the desilting basin are larger than those of the channel body; and therefore, silt carried in water flow flowing through the desilting basin is attached to the inner wall of the desilting basin under the action of centrifugal force, the silt is left in the desilting basin to the maximum extent, and the desilting efficiency is improved.

The invention discloses a lining water seepage prevention structure and a construction technology thereof. The structure comprises a substrate layer made of sugarcane fibers and Portland cement, and the substrate layer effectively resists cracking and dry shrinkage; the anti-seepage layer is compounded by nano graphdiyne and a calcium sulphoaluminate-calcium oxide expanding agent, so that super-strong anti-seepage and crack self-repairing are realized; the sealing layer is composed of butyl rubber and zinc citrate, joints are efficiently sealed, and calcium carbonate crystallization is inhibited. The construction technology comprises the steps of laying of the permeable geotextile, layered pouring, joint strengthening of the pre-compressed sugarcane fiber strips and triple curing. The concrete has the advantages of being high in impermeability, excellent in self-repairing performance, good in crack resistance, durable in seam sealing, environmentally friendly and the like, and is suitable for water conservancy projects such as channels.

According to the technical scheme, the water level rising device is constructed, and the device is composed of a water inlet, a water tank wall, a water outlet and a water tank bottom. The water inlet of the device is wide and low, and the water outlet is narrow and high. The water inlet is determined according to the water quantity and needs to be wide enough; the water tank wall is lowest at the water inlet and is higher at the position closer to the water outlet; the water outlet is determined according to the water quantity and needs to be narrow enough; and the water tank bottom is lower in the position closer to the water inlet and higher in the position closer to the water outlet.

The utility model provides an assembly type arch aqueduct supporting frame which comprises an arch rib, buttresses are installed at the bottom of the arch rib, a plurality of framed bent columns are arranged at the top of the arch rib, the tops of the framed bent columns are connected with an aqueduct body through an installation mechanism, and the installation mechanism comprises a connecting base and a slope installation column. A limiting groove is formed in the side edge of the inclined surface mounting column, the connecting seat is mounted at the top of the framed bent column, a mounting seat is mounted at the top of the connecting seat, a clamping assembly matched with the limiting groove is arranged in the mounting seat, and a pedal assembly matched with the clamping assembly is arranged on the outer surface of the mounting seat. Compared with the prior art, the aqueduct has the advantages that the aqueduct structure is formed by splicing the plurality of aqueduct bodies in a modularized mode, so that when a certain section of aqueduct body of the aqueduct is damaged, the aqueduct body at the damaged position can be replaced, and the maintenance cost of the aqueduct body is reduced.

The invention relates to the technical field of irrigation ditches, in particular to an irrigation anti-leakage groove auxiliary reinforcing device and method. The covering mechanism comprises a cross beam, an inner covering assembly and two outer covering assemblies, the two outer covering assemblies are arranged at the two ends of the inner covering assembly correspondingly, and the inner covering assembly and the two outer covering assemblies are all connected with the cross beam; the pressing mechanism comprises two fixing structures and two downward pressing structures, the two fixing structures are arranged at the two ends of the cross beam correspondingly, the fixing structures are used for connecting the cross beam with the two channel bodies, the two downward pressing structures are arranged at the two ends of the cross beam correspondingly, and the two downward pressing structures apply downward pressing force towards the channel bodies to the two ends of the cross beam correspondingly; the covering mechanism and the pressing mechanism are arranged, so that the splicing seam between the two channel main bodies is prevented from cracking in the using process, and water is prevented from leaking to the lower ends of the channel main bodies.

The application discloses a ditch dredging and irrigation integrated robot, which comprises a mounting frame, support wheels are arranged at four corners of the mounting frame, the support wheels are supported to two sides of a water channel, and characterized in that a walking mechanism, a cleaning mechanism and an irrigation opening opening and closing mechanism are installed on the mounting frame, wherein the walking mechanism comprises driving wheels and a driving motor, the driving motor drives the driving wheels to rotate, and the driving wheels drive the mounting frame to move; the cleaning mechanism comprises a water pump and a spray pipe, the water pump is connected to the spray pipe, a plurality of nozzles facing the inner wall of the water channel are arranged on the spray pipe; the irrigation opening opening and closing mechanism comprises a baffle and a baffle driver, the baffle is slidably connected into an irrigation opening of the ditch, and the baffle driver is installed on the mounting frame and used for driving the baffle to move to open or close the irrigation opening. The device can complete automatic dredging and irrigation control operations of a traditional ditch.

The utility model relates to the technical field of water gates, and discloses an automatically adjustable water gate device which comprises a water channel, a first sliding groove is formed in the water channel, a support is fixedly installed above the water channel, and a first lead screw is meshed with a first connecting block. A fixing shaft is fixedly installed at the bottom of a second fixing plate, when the water level is too high, a floating block can be driven to rise upwards, meanwhile, when the water level continues to rise, the upper portion of the floating block can extrude the bottom of a button, the button is shrunk under the telescopic action of a spring and a telescopic rod, and therefore the button is triggered, and the water level is controlled to be adjusted. At the moment, a connecting table is connected with a first motor through a connecting line, so that the first motor is started, a first lead screw is meshed with a first connecting block, meanwhile, the first connecting block is fixedly connected with the gate through a first fixing plate, the gate is lifted upwards, and the purposes of timely draining water and preventing the situation that the farmland is submerged due to water level overflow are achieved.

The utility model relates to the technical field of agricultural water and soil engineering, and discloses an agricultural water recession buffer structure which comprises a ditch, square short blocks are fixedly connected to the left side and the right side of the top of the ditch, a bidirectional threaded rod is rotationally connected to the middle of each square short block, and a plurality of cleaning brushes are in threaded connection to the outer wall of each bidirectional threaded rod at equal intervals. A square filter screen is fixedly connected to the interior of the ditch, a second gear is fixedly connected to the left end of the outer wall of the two-way threaded rod, a chain is installed on the outer wall of the second gear, a motor is fixedly connected to the left side of the outer wall of the ditch, a first gear is fixedly connected to the output end of the motor, and the first gear is in transmission connection with the second gear through the chain. According to the utility model, large impurities in water flow are cut and crushed through the blade long rod, so that the problem that irrigation and water return of crops are affected after the filter screen is blocked due to the fact that the impurities are continuously accumulated on the filter screen after the filter screen is used for a long time is solved.