829results about "Irrigation ditches" patented technology

The present invention relates to the technical field of land engineering, and relates to a water and soil resource comprehensive improvement method for loess hilly and gully region channels. The method comprises: (1) soil layer general survey: performing soil layer thickness survey and soil nutrition content measurement; (2) soil body reconstruction: on the basis of soil layer general survey data, selecting a soil body construction mode, and performing soil body profile reconstruction, soil body nutrition reconstruction and field parcel arrangement; and (3) constructing a water resource regulation and control system for the loess hilly and gully region channels. According to the present invention, investigation and survey are performed firstly, then treatment is performed, water and soil are treated simultaneously, and steps are coordinated, so that ecological treatment of the loess hilly and gully region channels is finally completed, and comprehensive improvement of water and soil resources is achieved. The present invention ensures mechanical cultivation of the region after the improvement, effectively increases the area of the irrigable land and the area of the non-irrigated land, effectively improves the farmland quality and the grain yield, and effectively reduces the soil erosion amount of the channels.

The invention belongs to the technical field of water conservancy projects, and particularly discloses a water conservancy irrigation gate device and a using method thereof.The water conservancy irrigation gate device comprises a frame installed in a water channel, a gate is slidably connected into the frame, and a filter plate is fixed to the inner wall of the bottom of the frame and used for filtering impurities and garbage in water; the top of the filter plate extends into the gate in a sliding manner; according to the invention, in the up-and-down movement process of the gate, excessive silt can be prevented from entering the collecting groove, silt and sludge in the triangular grooves and the collecting groove can be pumped out and discharged, the sealing performance between the gate and the frame body is ensured, and in addition, the sealing performance between the gate and the frame body is ensured. And the triangular strip, the filter plate and the inclined surface scraper blade are matched to filter sundries and garbage in the water flow.

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 utility model relates to the technical field of flood control, and discloses a water-saving irrigation flood control device which comprises a dam, a supporting frame is fixed to the top of the dam, a limiting frame is installed on the inner side wall of the dam, and a gate used for flood control or irrigation is seamlessly inserted into the inner wall of the limiting frame. A water level sensor and a mesh box are installed on one side of the dam, a water pump used for water saving and drainage is installed in the mesh box, and the water outlet end of the water pump communicates with a drainage pipe located on the other side of the gate. A motor output shaft drives a second gear to rotate, a gate drives a sliding rod to move upwards, water passes through the gate from one side of a collecting box, the farmland on one side of the gate is irrigated through the water, and when flood comes, the gate shields one side of a dam at the moment, and the flood is prevented from entering an irrigation canal on the other side of the gate; the influence of flood on the growth of crops is avoided, the gate is controlled by the motor to rise, water flows from the collecting box to the farmland for irrigation, and the gate can be quickly closed when the flood comes.

The invention provides a water conservancy irrigation canal with a sundry cleaning structure, and relates to the field of water conservancy irrigation canals, and the water conservancy irrigation canal comprises an irrigation canal main body, a leakage-proof water receiving film, a limiting guide plate, a sliding bearing plate, a power transmission rotating shaft, a position limiting push plate, a sliding mounting seat and a water leakage warning plate; the leakage-proof water receiving film is inserted into the inner side of the irrigation canal main body; the limiting guide plates are fixedly connected to the left and right sides of the irrigation canal main body; the sliding bearing plate is slidably connected to the inner side of the limiting guide plate. The power transmission rotating shafts are rotationally connected to the left and right sides of the irrigation canal body. The position limiting push plate is fixedly connected to the outer side of the power transmission rotating shaft; the sliding mounting base is slidably connected to the upper portion of the irrigation canal body. The water leakage warning plate is fixedly connected to the upper part of the sliding mounting seat; according to the invention, the inconvenience of regular inspection of the water conservancy irrigation canal is avoided, a lot of time is saved, and the inspection efficiency is improved; the problem that the inspection efficiency of the water conservancy irrigation canal is affected due to the fact that the water conservancy irrigation canal needs to be inspected for a long time is solved.

The invention relates to the technical field of intelligent irrigation water level monitoring, and discloses a field water level monitoring method and system based on an intelligent irrigation gate, and the method comprises the steps: preprocessing field crop information and field water level information, calling a crop growth model according to the field crop information and the field water level information, and obtaining crop water demand data; judging whether the current field water level meets the requirements of the crop growth stage or not, generating a water level regulation and control decision, sending the water level regulation and control decision to an upstream reservoir, obtaining an irrigation plan and controlling the reservoir to open a gate and discharge water; the cooperative control of the field upstream water source and the field crop water demand is realized.

The utility model provides an intersection opening structure of a farmland ditch, which comprises two intersected ditch bodies, an intersection center and four intersection openings, the intersection center is provided with a multilateral flow guide column, the intersection openings are provided with flow guide blocks, the flow guide blocks are positioned on the center lines of the ditch bodies, two side ditch walls of the ditch bodies close to the intersection openings are provided with flow guide grooves, the flow guide grooves are communicated with the flow guide columns, and the flow guide columns are communicated with the flow guide grooves. And the diversion trench is communicated with the two intersected trench bodies. According to the intersection opening structure of the farmland ditch, the flow guide blocks arranged at the intersection opening are used for dividing water flow, impact of part of water can be absorbed, then the multilateral flow guide columns in the center of the intersection opening are used for guiding the water flow direction, and the flow guide grooves formed in front of the intersection opening can also guide part of the water flow. The round flow guide columns in the flow guide grooves and the filtering baffles at the intersection openings are matched, floating objects on the water surface are intercepted and directly drained into the other ditch body through the flow guide grooves, and accumulation of the floating objects at the intersection center is avoided.

The invention provides a farmland irrigation water body suspended matter capturing device and a using method, the farmland irrigation water body suspended matter capturing device comprises a hydroelectric generator and a capturing device which are arranged in a ditch in the water flow direction, the bottom of the capturing device is provided with a low-position water passing channel, the end of the low-position water passing channel is provided with a valve plate moving along with rising of the water level, and the valve plate is used for blocking the low-position water passing channel; a plurality of rotating capturing frames are arranged at the top of the capturing device, and the rotating unfolding direction of the capturing frames is the same as the water flow direction; a plurality of electrode plates are arranged on the two sides of the capturing device, and each electrode plate comprises a positive electrode and a negative electrode which are arranged on the two sides of the capturing device respectively and used for adsorbing suspended solids in water. Through comprehensive utilization of hydroelectric generation, electrode plate electrostatic adsorption, mechanical filtration and automatic adjustment technologies, the problem that existing irrigation water is high in sand content is effectively solved, cleanliness of the irrigation water is ensured, and the efficiency and quality of farmland irrigation are improved. The technical scheme is simple and convenient to operate, low in maintenance cost, environment-friendly, energy-saving and wide in application prospect.

The invention discloses an agricultural automatic irrigation system and method based on big data, and relates to the technical field of agricultural automatic irrigation and Internet of Things big data, and the system comprises a soil sensor module which detects the soil humidity of a farmland, obtains a real-time soil humidity value of the farmland, and sends the real-time soil humidity value to a cloud server; the detected real-time soil humidity value is transmitted to the big data cloud platform; the user terminal is used for determining a gate lifting instruction according to the real-time soil humidity value and a set humidity standard threshold value; after receiving the gate lifting instruction, the irrigation gate device lifts a gate to convey water to the farmland and irrigate the farmland, and when the real-time soil humidity value of the farmland is not smaller than a set humidity standard threshold value, the user terminal sends a gate closing instruction to the irrigation gate device to stop irrigation. Accurate control over the farm irrigation time, site and water amount is achieved.

The invention discloses a double-sided photovoltaic system combined with agriculture and animal husbandry greenhouses in the field of double-sided photovoltaic, which comprises a ground, a plurality of greenhouses distributed at equal intervals on the top of the ground, a water guide channel arranged on the ground and guiding to the direction of the greenhouses, a reflective component connected to the top of the ground, and a photovoltaic component connected to the top of the ground. According to the device, the efficiency of photovoltaic collection can be effectively improved, meanwhile, the blocking effect of a photovoltaic panel on rainwater is avoided, meanwhile, the reflecting plate with the adjustable inclination angle is arranged on the side face of the greenhouse, reflecting light supplementing can be conducted on the greenhouse according to the actual sunlight environment, and therefore normal growth of crops is ensured.

The utility model discloses a water conservancy irrigation water-saving gate capable of adjusting water flow, which comprises two mounting plates, the same gate is mounted between the two mounting plates in a sealing and sliding manner, the front side and the rear side of the gate are both fixedly connected with lifting mechanisms, the tops of the two mounting plates are fixedly connected with the same concentric-square-shaped frame, and the same concentric-square-shaped frame is fixedly connected with the lifting mechanisms. The front side and the rear side of the concentric-square-shaped frame are fixedly connected with first band-type brake motors, the ends of output shafts of the first band-type brake motors are fixedly connected with the corresponding lifting mechanisms, and the first band-type brake motors are matched with the lifting mechanisms. Through the arrangement of a series of structures, water flow can be accurately controlled and adjusted through electric drive in cooperation with the arrangement of the flow sensor, the situation that water conservancy irrigation is affected due to the fact that the water flow is large or small can be effectively reduced, floating objects in irrigated water can be filtered and shielded, and the water conservancy irrigation efficiency is improved. And meanwhile, the filtered and shielded floating objects can be scraped, collected, hoisted and cleaned, and the device is convenient to use by personnel.

The invention relates to an irrigation and drainage channel structure of irrigation and water conservancy engineering and a construction method thereof, and belongs to the technical field of irrigation and water conservancy engineering, the irrigation and drainage channel structure of the irrigation and water conservancy engineering comprises a channel body, a plurality of cleaning groups are arranged in the channel body, and the cleaning groups are arranged at intervals in the length direction of the channel body; the cleaning set comprises a scraping piece rotationally arranged in the ditch body, the rotating axis of the scraping piece is perpendicular to the bottom wall of the ditch body, the scraping piece abuts against the bottom wall of the ditch body, the distance between the two ends of the scraping piece and the rotating axis is larger than half of the width of the ditch body, and the ditch body is provided with a driving assembly used for driving the scraping piece of the cleaning set to swing in a reciprocating mode. The drainage ditch has the advantages that sediments are not prone to being accumulated in the ditch body, and the drainage effect is effectively guaranteed.

The utility model relates to the technical field of anti-seepage devices, in particular to a water conservancy channel anti-seepage device which comprises a first mounting plate and a second mounting plate arranged at the front end of the first mounting plate. Vertical plates are arranged at the front end of the second mounting plate and the rear end of the first mounting plate; mounting grooves are formed in the front side and the rear side of the first mounting plate and the front side of the second mounting plate; a mounting rod is arranged on the lower side of one end, close to the first mounting plate and the second mounting plate, of the vertical plate; a tensioning plate is arranged at one end, close to the first mounting plate and the second mounting plate, of the mounting rod; a fixing plate is arranged at the joint of the left end and the right end of the first mounting plate and the left end and the right end of the second mounting plate; according to the water conservancy channel anti-seepage device, through the arrangement of the first mounting plate, the second mounting plate and the vertical plate, the device can be adjusted according to the width of a water channel when the water channel anti-seepage project is carried out, rapid assembly can be achieved in the mode, and outdoor assembly and water channel anti-seepage by people are facilitated.

The invention relates to a water-sewage separation device capable of preventing sediment deposition, which comprises a fixed frame, a semicircular rubber air bag, a semi-arc-shaped sand separation column, a sand baffle, an air pump and a solar power supply system, the other surface of the fixed frame is fixed with the edge of the semicircular rubber air bag; an air outlet of the air pump is communicated with the semicircular rubber air bag, and the water inlet channel penetrates through the semicircular rubber air bag to be communicated with the gate. The exhaust valve is connected with an exhaust hose, and the exhaust hose is fixed to the surface of the semicircular rubber air bag. Sediment deposited on the semicircular rubber air bag can be effectively vibrated, the cleaning effect is achieved, in addition, water flow is caused by opening and closing of the gate, the sediment deposited on the two sides of the gate is disturbed, then the sediment is separated and deposited on the two sides of the gate or flows away along with water flow, and therefore the problem of sediment deposition in front of the gate is effectively solved.

The invention discloses a water purification method for a water conservancy project gate, and belongs to the technical field of sewage treatment. A water conservancy project gate water purification method comprises a front-back through guide channel and an interception net, the interception net is fixedly connected in a channel of the guide channel, the side wall of the guide channel is fixedly connected with a collection box, the guide channel is provided with a cleaning sliding groove, the cleaning sliding groove communicates with the collection box through a notch, and a lifting supporting plate mechanism is arranged in the cleaning sliding groove; the fixed box is fixedly connected to the inner wall of the guide channel; the cleaning roller can drive the cleaning brush to rotationally brush and sweep impurities on the intercepting net, accumulation of the impurities on the intercepting net is reduced, smoothness of the intercepting net is kept, the back flushing box is matched for flushing the water outlet face of the intercepting net, the impurities and sediments attached to the intercepting net can be effectively flushed away, and the cleaning effect is good. The accumulation phenomenon of the impurities is reduced, then the impurities are filtered through the collecting box and then collected, and the filtered water source can be conveyed into the guiding channel again.

The invention relates to irrigation and water conservancy engineering, and discloses a platform paddy field permeation water catchment and anti-seepage bank protection linkage system and method, and the system comprises a water catchment system, a water collection system and a bank anti-seepage system; water catchment systems are uniformly distributed at the bottom of the plow pan of each layer of field except for the lowermost layer of field, and the water catchment systems are used for collecting infiltration water infiltrated from the plow pan; the water collection system is provided with a water collection pipe and a water collection pool, and the water collection pipe is connected with each layer of water catchment system and used for discharging collected seepage water into the water collection pool beside the lowermost layer of field parcel; the field ridge anti-seepage system is composed of an anti-seepage layer arranged in each layer of field ridge and used for isolating the field ridge from being soaked by water in the field steeping process. Irrigation water and underground water are effectively prevented from diffusing into the field ridge, and meanwhile secondary utilization of seepage water is achieved.

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 utility model relates to a channel anti-seepage structure which comprises a bottom plate, a vertical plate and an anti-seepage piece. The left end and the right end of the top face of the bottom plate are fixedly connected with vertical plates to form a groove body, first U-shaped grooves are formed between the two vertical plates and in the front portion and the rear portion of the top face of the bottom plate in a downwards-sunken mode, and the front end of the first U-shaped groove in the front side penetrates through the front side face of the bottom plate. A plurality of groove bodies are connected to form a channel, an anti-seepage piece is arranged at the connecting position of every two adjacent groove bodies and comprises a first plate body and a second plate body, every two first U-shaped grooves at the connecting position of every two adjacent groove bodies are connected to form a containing groove, the first plate bodies are arranged in the containing grooves, a first sealing gasket is arranged on the bottom face of each first plate body, and the second plate bodies are arranged on the left side and the right side of each first plate body. A second sealing gasket is arranged on the left side face of the second plate body on the left side, a top plate is fixed to the lower portion of the right side face of the second plate body on the left side, and the lower end of the top plate abuts against and makes contact with the first plate body. According to the utility model, the problem that water is easy to leak outwards from a gap at the joint of the channel is solved.

A water level control unit (1) comprises a housing (2) having a flow channel (3). A valve element (7) is positioned so as to be rotatable inside the flow channel about the hinge axis (5) to close a lower section (LS) of the flow channel while dividing the flow channel into a first upstream side (FS) and a second downstream side (SS). The hinge shaft (5) is arranged at a height (y1) above the bottom of the flow channel. The valve element comprises a lower valve plate portion (7lo) depending from the hinge shaft in the closed position. A floating body (14) is provided on and connected to one side of the lower valve plate portion for moving the valve element from the closed position toward the open position according to an increase in water level (Lw) on a first upstream side in the flow passage.

The invention relates to the field of trash rack cleaning, in particular to a trash rack self-cleaning device for a high-standard farmland irrigation channel, which comprises two side plates, a grating, a scraping frame and a non-return stroke assembly, the two side plates are symmetrically arranged and are respectively arranged at the two ends of the grating, and the two ends of the grating are fixedly connected with side rods; the scraping frame is slidably connected to one side of the grating, connecting blocks are installed on the adjacent sides of the two side plates through installation bolts, arc-shaped flat springs are fixedly connected to the tops of the connecting blocks, and the other ends of the arc-shaped flat springs abut against the side rods; a first stroke groove is formed in the outer wall of the side rod in a penetrating mode, and a stroke bolt is inserted into the first stroke groove. When the through holes in the grating are blocked by impurities and normal water guide irrigation of the grating is affected, the grating moves under the impact force of water flow, the grating can drive the sliding connection scraping frame to move along the second stroke groove which inclines upwards during moving, and the scraping frame can scrape away the impurities on the grating in the moving process.

The utility model relates to the technical field of diversion gates for irrigation canals, in particular to a diversion gate device for irrigation canals, which comprises a fixing frame, a first sleeve block is fixedly connected to the outer wall of the front side of the left end of the fixing frame, a rotating shaft body is arranged at the upper end of the first sleeve block, and a second rotating block is arranged at the right end of the rotating shaft body. A sealing block is arranged at the front end of the fixing frame, and a clamping block is fixedly connected to the outer wall of the sealing block. The sealing block can stably move towards the right end of the fixing frame through the first sliding mechanism, two sets of supporting points are arranged in the device, so that the sealing block in the device is more stable during unfolding, the problem that a gate is damaged due to large impact force of water is effectively solved, and the service life of the gate is prolonged. And a baffle can move along with a second sliding block through a second sliding mechanism, so that floating objects of accessories of the fixing frame are blocked and fished by the baffle, and the problem that the floating objects flow into the next water area and are difficult to collect and clean is effectively prevented.

The invention relates to the technical field of hydroelectric dam slope protection, and discloses a hydroelectric dam slope protection structure applied to water and soil loss prevention, which comprises side edge beams, a bottom plate is arranged between the two side edge beams, the top surface of the bottom plate is lower than the top surfaces of the side edge beams, and the upper side of the bottom plate is covered with soil. The upper surface of the soil is flush with the upper surfaces of the side edge beams, green plants are planted on the surface of the soil, root system holes are evenly formed in the bottom plate, root systems of the green plants are inserted into the root system holes in a penetrating and winding mode, water collecting structures are arranged above and below the side edge beams, and water baffles are arranged below the side edge beams. In the invention, the bottom plate is divided into a plurality of transverse strips and vertical strips through root system holes, and the transverse strips and the vertical strips are wound through root systems of green plants, so that the problem that the bottom foundation of the dam slope protection is unstable due to the fact that soil at the bottom of the dam slope protection is possibly washed away by rainwater due to large rainfall in rainy seasons of a traditional hydroelectric dam is solved.

The utility model discloses a water diversion channel based on irrigation and water conservancy engineering, which relates to the technical field of water diversion devices of water conservancy engineering and comprises a U-shaped base, a group of quick connection bottom grooves are fixedly arranged at two ends of the U-shaped base, a group of symmetrical side beams are fixedly arranged at two ends of the U-shaped base, and a group of longitudinal quick connection grooves are fixedly arranged at two ends of each side beam. The quick-connection bottom grooves correspond to the longitudinal quick-connection grooves in position, a leakage plate is movably installed between the quick-connection bottom groove at one end and the longitudinal quick-connection groove, an installation groove is fixedly formed in one side of the leakage plate, a water stop plate is movably clamped in the installation groove, and a filtering baffle is movably installed between the quick-connection bottom groove at the other end and the longitudinal quick-connection groove. The device is simple in structure, the water diversion function of the device is improved, meanwhile, the practicability of the device is improved, water diversion of a farmland can be achieved, automatic water drainage of the device can be achieved when water in the farmland is too much, and meanwhile the transportation and installation difficulty of the device is reduced through a detachable assembly installation structure.

The invention discloses a farmland irrigation area open channel water volume management system, and relates to the field of farmland water conservancy, the farmland irrigation area open channel water volume management system comprises a cloud control platform, a water level detection sensor and a gate mechanism, the cloud control platform controls the flashboard assembly to open the corresponding opening degree according to transmitted surge data and the water level difference between the upstream and the downstream of the gate mechanism after water drainage is finished, water is supplemented under the condition of minimum water energy loss, the total water drainage reduction amount caused by surge is supplemented, sufficient irrigation and drainage water is achieved, and the irrigation and drainage efficiency is improved. The water flow is divided during water drainage, so that the water flow is drained to two sides, the concentrated water flow is divided into two strands, the local impact force to the downstream is reduced, the loss of the total water amount in the water drainage process can be effectively avoided, the water used in an irrigation area keeps the optimal water amount and is not too much or too little, the water drainage efficiency is high, and the water drainage effect is good. And some emergencies can be effectively handled.

The utility model belongs to the technical field of hydraulic engineering, and particularly relates to a simple field water control device which comprises a fixed base, and a water level detection mechanism, a water control mechanism and a power mechanism are arranged above the fixed base. The water level detection mechanism and the power mechanism are located on the two sides of the water control mechanism respectively. The water level detection mechanism comprises a scale, and the water level detection mechanism achieves the action that the scale detects the water level height; the water control mechanism comprises a disconnecting link, and the water control mechanism achieves the action that the disconnecting link controls water drainage. The power mechanism comprises a storage battery, and the power mechanism achieves the action that the storage battery supplies power to the device. According to the simple field water control device, the water level detection mechanism is arranged, when the water level rises and falls to drive a scale to reach the set height, an inductor controls a hydraulic cylinder to open or close a disconnecting link, and the problem that the existing water injection and drainage amount is not easy to accurately control is solved.

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.

A lifting gate is driven by a driving assembly to ascend and descend to be opened, river water flows into the sluice, garbage and sundries in the river water are intercepted and fished through a filter screen sliding plate on the other side, impurities such as suspended solids and silt in the water can be removed, the water quality is improved, and the cleanliness of the water body is guaranteed. The digging plates on the two sides are driven to fish sundries intercepted in front of the filter screen sliding plate through cooperation of the electric push rod and the material shaking assembly, normal work of the filter screen sliding plate can be ensured by cleaning the filter screen sliding plate, the filtering efficiency is improved, the reduction of the filtering effect caused by blockage is reduced, and smooth water flow can be ensured. Comprising a culvert gate base, a salvage cleaning structure is arranged below the culvert gate base, the salvage cleaning structure comprises a lifting gate slidably connected into the culvert gate base, a driving assembly in the culvert gate base can drive the lifting gate to ascend and descend, and a filter screen sliding plate is fixedly installed on the side, away from the lifting gate, of the culvert gate base; mounting covers are fixedly mounted on the two sides of the culvert gate machine base.

The invention relates to a saline-alkali soil water collection irrigation and drainage dual-purpose ditch which comprises a plurality of water collection ditches. The bracket is detachably connected to the top of the water collecting ditch and is formed by splicing a plurality of sections; the rainwater collecting irrigation mechanism comprises a rainwater collecting assembly, a first-stage irrigation assembly and a second-stage irrigation assembly, and the rainwater collecting irrigation mechanism has a rainwater collecting mode, a natural irrigation mode and a strong irrigation mode; in rainy days, the rainwater collecting irrigation mechanism is in a rainwater collecting mode, and the rainwater collecting assembly is started to collect rainwater into the water collecting ditch; when the water in the water collecting ditch is sufficient, the rainwater collecting irrigation mechanism can be in a natural irrigation mode, and the first-stage irrigation assembly is started; when the rainwater collecting irrigation mechanism is in a strong irrigation mode, the secondary irrigation assembly is started, anti-seepage cloth is laid on the inner wall of the water collecting ditch, concealed pipes are buried below the bottom wall of the water collecting ditch, and the anti-seepage cloth is located above the concealed pipes. The system can realize collection, storage and utilization of rainwater, provides necessary fresh water resources for improvement of the saline-alkali soil, is combined with the concealed pipes, does not affect drainage, and has double effects of water collection irrigation and salt drainage.

The utility model relates to the technical field of irrigation and water conservancy, and discloses a farmland irrigation and drainage channel which comprises a main drainage channel and secondary drainage channels longitudinally and transversely formed in a farmland and further comprises a base, a water pumping pipe, a water suction pump, a drainage pipe, a telescopic adjusting pipe and an adjusting device. The other end of the water suction pipe extends above the secondary drainage channel, the water suction pump is arranged on the base, and the water suction pump is connected with the water suction pipe; one end of the drainage pipe extends into the main drainage channel, the other end of the drainage pipe extends to the bottom of the secondary drainage channel, the end, extending to the bottom of the secondary drainage channel, of the drainage pipe is connected with the telescopic adjusting pipe, and the adjusting device is used for adjusting the height of a pipe opening in the upper end of the telescopic adjusting pipe. The device has the effect of conveniently irrigating and draining the farmland.