Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

404results about "Irrigation ditches" patented technology

Paddy field gate anti-clogging intelligent monitoring control method

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.
Owner:SHANDONG OUBIAO INFORMATION TECH CO LTD

Water conservancy irrigation canal with sundry cleaning structure

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.
Owner:ZHEJIANG FENGYANG CONSTR CO LTD

Double-sided photovoltaic system combined with agriculture and animal husbandry greenhouse

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.
Owner:SHANGHAI GGSOLAR TECH

Water-flow-adjustable water-saving gate for water conservancy irrigation

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.
Owner:榆林市榆阳区三岔湾渠灌溉服务中心

Rice field canal mouth irrigation and drainage gate opening and closing control method based on motor pulse and torque

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.
Owner:HANGZHOU HAOTIAN MACHINERY TECH CO LTD

High-standard farmland intelligent irrigation and drainage pump gate cooperative remote control method and system

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.
Owner:JIANGSU WUBO ENVIRONMENTAL ENG CO LTD

Leakage detection device during flood irrigation of canal and construction repair method

The invention discloses a water channel flooding leakage detection device and a construction repair method, and belongs to the technical field of leakage repair construction. Comprising a detection leaking stoppage vehicle, the detection leaking stoppage vehicle is connected with a charging barrel and a feeding pipe, and the charging barrel is communicated with the feeding pipe; a grouting head is further included, a connecting cylinder is fixedly connected to the top of the grouting head, a first air bag is connected to the connecting cylinder, and a second air bag is fixedly connected to the grouting head; the material conveying pipe is fixedly connected into the connecting cylinder, and the material conveying pipe communicates with the grouting head; the shooting device is fixedly connected to the grouting head; the exhaust pipe is fixedly connected to the grouting head; according to the device, the humidity in the drill hole is detected in a layered manner, and the specific humidity condition in the drill hole can be analyzed and judged by comparing and analyzing the humidity signal, so that a worker can conveniently infiltrate repairing agents with different concentrations, and the leakage rate of the drill hole is improved by infiltrating the repairing agents with different concentrations into the drill holes at different leakage points. The plugging effect of the repairing agent on the leakage position in the drill hole can be guaranteed, and the cost is effectively controlled.
Owner:上海豫宏(金湖)防水科技有限公司

Comprehensive treatment method for salinized soil in semi-arid region

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.
Owner:INST OF LAND ENG & TECH SHAANXI PROVINCIAL LAND ENG CONSTR GRP CO LTD

Canal water-saving gate device based on buoyancy self-adjustment

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.
Owner:SOUTH TO NORTH WATER SHANDONG LINE CORP

Farmland irrigation drainage dike

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.
Owner:刘章喆

Paddy field water supply device

To achieve semi-automation with a simple and inexpensive structure in which water supply is performed manually and water cutoff is performed automatically, which reduces a burden on farmers, and to sufficiently supply water to a paddy field without increasing a flow rate of a water channel even in a place at a low water level of a water channel like a downstream part of a water channel 1.SOLUTION: A paddy field water supplying device in which an opening / closing plate 10 for opening / closing a gate port 4 of a water channel 1 is vertically movably provided in an upright posture includes: a handle 11 that is manually moved up together with the opening / closing plate 10; an engaged part 13 provided on the handle 11 and an engagement part 14 engaged therewith; a paddy field water level meter 26 for detecting that a paddy field water level A reaches a set water level; an electromagnetic solenoid 16 for moving the engagement part by energization based on the detection, and disengaging the engagement between the engagement part and the engaged part 13; and a block 30 for securing a water level of a water channel for raising and securing a water level B of a water channel in the gate port 4.SELECTED DRAWING: Figure 1
Owner:SHOWA CONCRETE IND

Cut-off material, aqueduct joint structure, and aqueduct joint construction method

To provide a cut-off material, an aqueduct joint structure, and an aqueduct joint construction method capable of simplifying a process, shortening a construction period, reducing the number of parts, and reducing cost.SOLUTION: In a cut-off material 11 formed long, a sectional shape orthogonal to a longitudinal direction has a vertically long hollow part 21 and is formed into a tubular shape having side surfaces 25 on both left and right sides of the upper surface via a corner 23, the upper surface is formed by a recess 27, each side surface 25 has a bent projected side surface 29 and a constricted part 31 between the corner 23 and the projected side surface 29, a plurality of fin-like protrusions 33 are formed so as to be vertically spaced apart in the left and right projected side surfaces 29, and the fin-like protrusions 33 incline more upward on the upper side.SELECTED DRAWING: Figure 2
Owner:C I TAKIRON CORP +1

Flow dividing device for irrigation and water conservancy

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.
Owner:SHANDONG BENTAYGA MUNICIPAL GARDEN ENGINEERING CO LTD

Paddy field water withdrawal management system

To provide a paddy field water withdrawal management system that can easily manage the timing of water management work for paddy fields.SOLUTION: A system comprises: a blocking means that is arranged at multiple locations on a waterway leading to a rice paddy and blocks the waterway; a control device that controls the opening and closing of the waterway by the blocking means; and a terminal device having a display means, the terminal device being configured to be able to display multiple rice paddies based on previously input position information of the multiple rice paddies, and displaying the open / closed state of the waterway by each of the blocking means of the waterway leading to the selected rice paddy and the accumulated temperature since the crop was planted, when an arbitrary rice paddy is selected from the multiple displayed rice paddies.SELECTED DRAWING: Figure 4
Owner:ISEKI & CO LTD

Intelligent gate integrating rice field water level monitoring function

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.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY

Prefabricated canal

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.
Owner:CHINA THIRD METALLURGICAL GRP

Water conservancy irrigation channel with impurity removing function

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.
Owner:梁山县引黄灌区事务中心

Water conservancy irrigation canal

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.
Owner:山东省海河淮河小清河流域水利管理服务中心

A method and system for controlling the equalization of water distribution in an open channel

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.
Owner:HUAXIN QINGYU ENVIRONMENTAL TECH (BEIJING) CO LTD

Field irrigation and drainage gate for irrigation and water conservancy

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.
Owner:HEILONGJIANG WATER CONSERVANCY & HYDROPOWER GRP CO LTD

Detachable anti-blocking gate of control box

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.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY

U-shaped channel structure for irrigation and water conservancy irrigation

A supporting mechanism comprises a top plate, a vertical plate is fixedly installed in the middle of the bottom face of the top plate, the side, away from the top plate, of the vertical plate vertically extends downwards, a collecting barrel is fixedly installed at the bottom of the vertical plate, and a front net plate is fixedly installed on the front face of the collecting barrel; a collecting opening is formed in one end of the top of the front screen plate, a rear screen plate is rotationally connected to the back face of the collecting barrel, a connecting block is fixedly connected to the bottom end of the rear screen plate, an inserting opening is fixedly connected to the bottom end of the collecting barrel, an inserting block is slidably connected to the inner wall of the connecting block, and one end of the inserting block is movably connected with the inner wall of the inserting opening. The other end of the inserting block is fixedly connected with a spring, the side edge of the spring is fixedly connected with the inner wall of the connecting block, a motor in the supporting mechanism can drive a rotating frame in the transferring mechanism to rotate, a push plate pushes and shovels silt accumulated in the channel and puts the silt into a collecting barrel, and the channel is conveniently cleaned.
Owner:NANJIAN COUNTY WEIMEI AGRICULTURAL PRODUCTS PROCESSING CO LTD

Rectangular channel rotating type water gate integrated flow control equipment

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.
Owner:HAINAN WATER RESOURCES & HYDRO POWER CONSTR SURVEYING & MAPPING DESIGN INST

An irrigation channel flow measurement device

The present invention discloses an irrigation channel flow measurement device, which relates to the field of flow measurement technology. The present invention comprises a mounting base, a Parshall flume, and an ultrasonic flowmeter. The Parshall flume is fixedly mounted in the mounting base, and the ultrasonic flowmeter is mounted on the Parshall flume via a mounting rod. The present invention also comprises an interception plate, which is rotatably mounted on the Parshall flume via a rotating rod, and the interception plate is tilted backward from the upstream contraction section of the Parshall flume to the short straight throat section. An impact detection assembly is installed between the rotating rod and the Parshall flume, and the impact detection assembly is used to detect the impact force of the water flow on the interception plate. The advantage is that the present invention can automatically complete the dredging of the interception plate and the Parshall flume according to changes in the water flow rate and the changes in the water impact force on the interception plate, which can effectively improve the accuracy of water flow measurement. At the same time, it can also ensure the water discharge speed when the water flow rate is large, ensuring the stability of the device during flood discharge.
Owner:SUZHOU XINDE MASCH CO LTD

Irrigation water tank not easy to block

The utility model relates to the technical field of irrigation equipment, in particular to an irrigation water tank not prone to being blocked. The irrigation water tank not prone to being blocked solves the technical problems that in the prior art, crops are prone to being washed out by irrigation equipment, and a water gate is not prone to being maintained. An irrigation water tank not prone to being blocked comprises a water tank body and a water drain valve arranged in the water tank body, and the water tank body is further provided with a water guide tank. According to the irrigation water tank, the buffer water cavity is arranged, water discharged by the water drain valve enters the buffer water cavity firstly, the water discharged by the water drain valve is subjected to pressure relief in the buffer water cavity and then is output through the water guide groove, so that crops can be prevented from being destroyed by water in the water guide groove due to overhigh pressure or overhigh flow speed, and the performance of the irrigation water tank is optimized. By arranging the scraping plate, when the water drain valve is rotated, the scraping plate is static relative to the cylinder part, so that the scraping plate can scrape stains on the inner side wall of the cylinder part, the stains are prevented from blocking the water drain hole, and the irrigation water tank is easy to maintain.
Owner:HANGZHOU RIVER MANAGEMENT STATION

Anti-seepage ditch for irrigation and water conservancy

The utility model relates to the technical field of ditches, and discloses a farmland water conservancy anti-seepage ditch which comprises a body, two mounting grooves are formed in the body, the body is provided with an anti-seepage plate through the mounting grooves, four positioning boxes are fixedly connected to the upper surface of the body, a control rod is rotationally inserted into each positioning box, and the control rods are fixedly connected to the upper surface of the body. And the outer circumferential surface of the control rod is in threaded connection with a threaded pipe. According to the irrigation and water conservancy anti-seepage ditch, by arranging a sealing strip and an anti-seepage groove, the anti-seepage effect of the ditch is promoted to be optimized, a control rod drives a threaded pipe to move in the rotating process, the inclined face of a positioning block can be promoted to extrude and position the arc face of a positioning plate, and the anti-seepage effect of the ditch is optimized; the anti-seepage plate is convenient to install, position or disassemble and maintain, the ditch is convenient to lay, the workload of workers is relieved, and the problems that an existing ditch structure is strenuous to lay or disassemble and maintain, and the workload of the workers is increased are solved.
Owner:ANHUI JIAXIN URBAN CONSTR GRP CO LTD

A method for conserving water and raising water storage capacity in cultivated land in dry and hot river valley areas

The present invention discloses a method for conserving water and raising the water reservoir capacity of cultivated land in arid and hot river valleys, belonging to the technical field of farmland water conservancy projects; the method comprises digging furrows and ridges along the contour lines of a plot to form W-shaped furrows and ridges; laying a degradable film, a crop straw layer and a soil cover layer in sequence at the furrow bottom; arranging water guide mechanisms at equal intervals on the soil cover layer; covering the furrow and ridge surfaces with a ground film; and establishing an evaluation standard for soil water reservoir capacity and raising capacity based on the average annual precipitation by quantitatively evaluating the treatment effect; the present invention realizes efficient utilization of soil moisture through the design of a multi-layer water-retention structure and the reasonable layout of the water guide mechanism, can effectively improve the water-retention capacity of cultivated land in arid and hot river valleys, and has good promotion and application value.
Owner:INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI