445 results about "Drainage flow" patented technology

The invention discloses an intelligent discharge port dynamic regulation and control system and method based on multi-source time sequence fusion, and relates to the technical field of intelligent water affairs, and the system comprises a data collection module which is used for obtaining the multi-source data of a target area in real time; the space-time fusion module is used for mapping the meteorological radar data to the topological space of the drainage pipe network through a space-time alignment encoder, dynamically fusing the meteorological radar data, the surface runoff sensor data and the historical drainage data by adopting a multi-head attention mechanism, and generating a space-time fusion tensor; the prediction model module is used for constructing a TCN-LSTM hybrid model, taking the space-time fusion tensor as input and taking future drainage flow as output; and the dynamic regulation and control module is used for optimizing the gate opening degree and the pump station power control sequence in a rolling manner based on a model predictive control algorithm, and performing dual-target optimization by combining real-time electricity price data and overflow risks. According to the system, the prediction precision of the drainage flow can be improved, and double-target balance of the overflow risk and the energy consumption cost can be achieved.

The invention relates to the technical field of flood drainage machines, and discloses an intelligent flood drainage robot and a water pump assembly thereof, the water pump assembly comprises a water inlet section, one end of the water inlet section is provided with a water inlet, a drainage pump is arranged in the water inlet section, and a first pressure sensor is arranged between the water inlet and the drainage pump; the water outlet section is connected with the drainage section, a second pressure sensor is arranged on the water outlet section, and a water outlet is formed in the end, opposite to the water inlet section, of the water outlet section; and the first controller is electrically connected to the first pressure sensor, the second pressure sensor and the drainage pump. The first pressure sensor and the second pressure sensor are arranged on the water inlet side and the water outlet side of the drainage pump correspondingly, the water pressure in front of and behind the drainage pump can be accurately monitored in real time in the series use process of the flood drainage robots, and the drainage pump is accurately adjusted to adapt to the drainage flow of the front-section flood drainage robot; safety of fan blades and a motor of the drainage pump is protected, and the service life of the drainage assembly is guaranteed.

The invention relates to the technical field of sewage treatment intelligent monitoring, and particularly discloses a sewage treatment intelligent monitoring method based on multi-process treatment, and the method comprises the steps of pretreatment stage monitoring, precipitation effect evaluation, drainage flow rate adjustment and primary treatment stage effect evaluation. According to the invention, deep analysis is carried out on the influence of the deformation condition of the grating on blockage during interception of relatively large solid impurities, and real-time monitoring of the precipitation effect is carried out according to the change conditions of the concentration of suspended solids in a water body in the precipitation tank and the thickness of sludge at the bottom of the tank, so that the corresponding precipitation time of the precipitation tank is flexibly confirmed; meanwhile, whether the water flow speed is proper or not is judged by observing the turbidity change condition of the water outlet in the bottom of the sedimentation tank, the risk that follow-up treatment equipment is blocked or damaged is reduced, the interception efficiency of solid impurities in the pretreatment stage is improved, the stability of the sedimentation effect is ensured, and the turbidity of effluent is prevented from being increased and the sedimentation effect is greatly reduced.

The invention relates to an anti-deposition method and system for a sequencing batch storage and drainage sewage pipe network. The method comprises the following steps: determining the highest allowable storage water level and the lowest allowable discharge water level of each sewage pump station according to an unfavorable overflow point and a leakage point in an upstream service range of each sewage pump station; according to the historical change rule of the flow of each sewage pumping station, determining a corresponding upstream discharge water quantity increase abrupt change point; according to the drainage path of each sewage pump station and the upstream drainage amount increase abrupt change point, determining the sequence of the water storage-drainage mode of each sewage pump station; according to the drainage path and the operation mode of each sewage pump station, adjusting the operation mode and the pumping and drainage flow of other sewage pump stations; and when each sewage pump station is in the water storage-drainage mode, monitoring the liquid level change in real time, and controlling the operation state of the corresponding lift pump according to the liquid level change of each sewage pump station, the corresponding highest allowable water storage level and the corresponding lowest allowable water discharge level. According to the invention, the pollutant collection and transfer efficiency can be effectively improved.

The invention relates to the field of detection, in particular to a steam pipe network drainage monitoring and diagnosis system based on the Internet, and the system is provided with a data collection module which is provided with a plurality of collection units. The data acquisition module is used for respectively acquiring pipe network operation pressure in the steam pipe network, water quality hardness of inlet water, pipe network operation temperature, a water flow image of a drainage port and a scale image of the drainage port, and the data diagnosis module is connected with the data acquisition module and is used for predicting the drainage probability of the steam pipe network according to the pipe network operation pressure and the pipe network operation temperature. The data diagnosis module is connected with the data acquisition module and the data diagnosis module to judge whether the steam pipe network needs drainage or not and judge whether a drainage port of the steam pipe network needing drainage is blocked or not, and the early warning adjustment module is connected with the data acquisition module and the data diagnosis module and used for responding to blockage of the drainage port and adjusting pressure in the steam pipe network to flush the drainage port. Or the opening size of the drainage valve is adjusted to adapt to the drainage flow velocity, and the drainage monitoring and diagnosis accuracy is improved.

The invention provides a lake pre-discharge opportunity determination method and system based on short-term rainfall forecast, and relates to the technical field of urban flood control and drainage. The method comprises the following steps: acquiring short-term rainfall forecast data; calculating hourly production and confluence flow based on the short-term rainfall forecast data, and calculating the total amount of water entering the lake according to the hourly flow before a set moment; according to the designed drainage flow of the pump station, a water quantity balance equation and the total water quantity entering the lake, calculating the water quantity out of the lake, and determining the total water quantity out of the lake; the water balance equation, the total water entering the lake and the total water exiting the lake are used for combined calculation, and the starting moment of the pump station is obtained; the starting time of the pump station is used for determining the lake pre-discharge opportunity. The method can dynamically optimize the pumping and drainage mode of the pump station from time, determines the lake pre-drainage time, and improves the heavy rainfall coping capacity of a city.

To provide a drainage piping joint that has a sufficient drift function and can prevent clogging due to an object (solid matter) that obstructs a flow of drainage.SOLUTION: A drainage piping joint 100 has a side opening part 112 on a side surface of a cylindrical trunk part 110 having a vertical axis center. A lateral branch pipe connecting part 120 is provided in the side opening part 112, and an upper vertical connection part 140 and a lower vertical pipe connection part 160 are provided at upper and lower opening parts (upper opening part 114 and lower opening part 116) of a trunk part 110, respectively. The lateral branch pipe connection part 120 has a circular cross section centered on a lateral axis of the lateral branch pipe connection part 120 (without a swelling part), a drift plate 200 composed of a wall surface including a blocking part 210 and a clogging prevention part 220 for closing a part on a left side or a part on a right side of a circular cross section is provided in order to divert the drainage flowing from a lateral branch pipe to the side opening part 112 to either the left or right, and the wall surface does not project into the trunk part 110 (like a backflow prevention rib 300).SELECTED DRAWING: Figure 3

The invention discloses a cascade reservoir flood control water level combined application scheduling method and scheduling system, and relates to the technical field of cascade reservoir scheduling, and the method comprises the following steps: dividing into a plurality of sub-regions according to an administrative region, determining a sub-reservoir corresponding to each sub-region, and collecting the rainfall and historical flood discharge data; analyzing the water storage capacity of each sub-region at the moment corresponding to the historical data to form a training data set; constructing a flood season flood discharge prediction model, and obtaining the target flood discharge flowing into the sub-reservoir by using the prediction model; analyzing the water level change in the flood season according to the target flood discharge amount, and judging whether scheduling is needed; and if scheduling is needed, determining a drainage flow combination of each sub-reservoir, setting a constraint condition, and performing optimization through a multi-target genetic algorithm to obtain an optimal drainage flow scheme meeting constraints. According to the scheme, the scientificity, the accuracy and the intelligent level of combined dispatching of the cascade reservoirs are remarkably improved.

The invention provides an informatization intelligent drainage management method and system, and relates to the technical field of drainage management, and the method comprises the steps: obtaining water level data, first flow data and pump station flow control data, and obtaining a water level change function; determining a predicted rainwater inflow amount, predicting a water inlet pipeline inflow amount and determining predicted water inlet flow data; and determining predicted pump station flow control data according to the predicted water inlet flow data and the water level change function, and adjusting the pump station of the drainage pipeline at the beginning of the next monitoring period. According to the method and the device, the water level change function capable of describing the relation among the water level data, the first flow data and the pump station flow control data can be determined, then the predicted pump station flow control data of the pump stations of the drainage pipelines of the water storage areas are determined, the drainage flow of the water storage areas is optimized, the drainage flow of the areas can be coordinated, and the drainage efficiency is improved. The water level of each water storage area is in a reasonable range, and risks such as overflow of the reservoir in each area are reduced.

The invention provides a drilling gas extraction online metering control system, and relates to the technical field of coal mine informatization systems, and the system comprises a data acquisition unit which is used for acquiring extraction pump control time sequence data and pipeline gas sensing time sequence data; the flow prediction unit is used for predicting gas flow prediction time sequence data corresponding to a second time period in the future through a gas extraction flow prediction model; a backbone network of the gas extraction flow prediction model adopts an LSTM model; and the extraction control unit is used for determining extraction pump control parameter prediction time sequence data corresponding to a second time period through a gas extraction pressure control model, and the gas extraction pressure control model adopts a Transform model based on an attention mechanism. Therefore, through a comprehensive automatic on-line control system, gas data are monitored in real time and dynamically adjusted by means of a machine learning model, and the frequency of human intervention and the dependence on operators are reduced.

The invention discloses a water gushing tunnel section TBM construction method which comprises the following steps that an advanced geological forecast system is arranged in front of a TBM cutterhead and is transmitted to a central processing unit of a TBM main control room; according to rock mass fracture development degree data and real-time water pressure data obtained by an advanced geological forecast system, a water guide groove is formed in the top of a TBM shield; in the TBM propelling process, an advanced grouting system is started; after grouting operation is completed, the grouting effect is verified through a permeability coefficient detector arranged behind the cutterhead; and the drainage flow of the water guide groove is continuously monitored in the tunneling process. According to the method, accurate sensing of geological information, efficient discharge of gushing water, effective reinforcement of surrounding rock and automation of the construction process are realized through advanced geological forecast, targeted drainage system design, accurate grouting control and intelligent emergency response which are combined by multiple means, the risk of water gushing is reduced, and the construction safety and efficiency are guaranteed.

The invention relates to the technical field of data processing, in particular to a building water supply and drainage flow velocity abnormity monitoring method based on the Internet of Things technology, which comprises the following steps: collecting water flow velocity data in a pipeline in a building water supply and drainage system; according to the distribution condition of the water flow velocity values in the observation window and the clustering result of the difference elements between the water flow velocity values, obtaining a monitoring anomaly degree; dividing a feature value sequence obtained by monitoring anomaly degree sorting into a plurality of initial feature segments, and calculating an anomaly inclusion probability of the initial feature segments based on element distribution features and position information in the initial feature segments; and obtaining a neighborhood K value of the water flow velocity value according to the monitoring anomaly degree of the water flow velocity value and the inclusion anomaly probability of the initial feature section to which the water flow velocity value belongs, and determining an abnormal water flow velocity value. According to the method, feature analysis is carried out on the water flow velocity data, the neighborhood K value of the water flow velocity value in anomaly detection is adaptively obtained, and the accuracy of water flow velocity data anomaly monitoring is improved.

The farmland drainage system comprises a hard drainage channel and an ecological purification section, the ecological purification section comprises a frame protection unit and an internal filling unit, a bottom liner layer and a partition layer are arranged in the hard drainage channel to form a filling lattice, and the filling lattice is filled with a first filling matrix and a second filling matrix. The first filling matrix can filter and purify the farmland drainage, intercept pollutants in the farmland drainage, slow down the drainage flow rate and prolong the hydraulic retention time; the second filling matrix is used for planting aquatic plants, inhabitation and reproduction spaces are provided for small animals such as frogs and other microorganisms and planktons, the ecological benefits of an original hard drainage channel are improved, and meanwhile the planted aquatic plants can absorb pollutants in water through root systems and cooperate with the microorganisms to purify water. The invention further provides a farmland hard drainage channel transformation method.

The invention relates to the technical field of water supply and drainage flow monitoring, and discloses a self-adaptive water supply and drainage pipeline flow adjusting method and system.The method comprises the steps that equipment positions related to flow monitoring and adjusting are recognized through a three-dimensional stereogram, and a flow monitoring equipment position set and a flow adjusting equipment position set are obtained; converting the collected flow analog signal into a digital signal, and outputting the digital signal; according to the historical flow data set of the water supply and drainage pipeline, the self-adaptive flow adjustment model is trained; inputting the real-time water flow data into a self-adaptive flow adjustment model to obtain the supply demand of the water flow of the main path and the branch path of the water supply and drainage pipeline; and adjusting the flow adjustment equipment according to the supply demand to obtain the operation parameters of the adjusted flow adjustment equipment. The system comprises a signal output module, a supply demand module and a parameter adjustment module. Dynamic adjustment and optimization of the water supply and drainage flow are achieved, and the self-adaptive capacity and controllability of the system are enhanced.

The invention relates to a flood prevention drainage method and device based on a digital intelligent scheduling algorithm, and relates to the technical field of flood prevention drainage. A relay; the number of the relays corresponds to that of the water pumps; the touch screen all-in-one machine is used for man-machine interaction and displaying the running state of the drainage device The liquid level sensor is used for detecting the water level height in real time; a control mainboard; the control mainboard is electrically connected with the touch screen all-in-one machine, the relay, the liquid level sensor, the variable frequency driver and the current sensor; the control mainboard obtains a weather condition sent by the external equipment; the control mainboard predicts the water level change trend through a water level prediction model based on the water level height, the weather condition and the geographic features of the drainage area and generates a drainage task. And the control main board determines the working sequence of all the water pumps performing the drainage task according to the drainage flow, the energy consumption and the current operation duration of each water pump, and controls the relays of the water pumps in the working state to be in the conduction state.

The utility model discloses a charging socket terminal drainage structure and a charging socket. The charging socket terminal drainage structure comprises a drainage flow channel; the charging socket insulating shell comprises an alternating current insulating seat and a direct current insulating seat; the bottom of a terminal cavity of the alternating current insulation seat is provided with a hole I communicated with a drainage channel, the drainage channel is arranged on the back face of the alternating current insulation seat, and the side wall of one side, close to the direct current insulation seat, of the alternating current insulation seat is provided with a middle drainage hole. And the middle drainage hole is used for communicating the drainage flow channel with peripheral flow channels of the alternating current insulating seat and the direct current insulating seat. After the drainage structure is reasonably arranged in the insulating shell of the charging socket, on the basis of ensuring the electrical isolation performance of the insulating shell, water in each terminal cavity can be drained out of the charging socket through the drainage hole in the bottom of the insulator after passing through the alternating current drainage structure and the direct current drainage structure.

The invention discloses a simulation forecasting method suitable for urban rainstorm waterlogging in areas lacking pipe network data, which is characterized in that for areas without pipe network data, rainwater inspection well information is acquired by calling a Baidu map, pipeline drainage flow is generalized based on a rainwater well equivalent drainage method, and for areas with pipe network data, pipeline drainage flow is generalized by calling a Baidu map. Constructing a drainage pipe network model based on a one-dimensional Saint-View equation by adopting a finite difference method; then, constructing a hydrodynamic model, coupling a rainwater well equivalent drainage method and a drainage pipe network model with an FVCOM model, simulating an earth surface ponding evolution process, and obtaining a rainstorm waterlogging data set; and training and establishing a water depth prediction model based on the obtained data, then predicting the water depth of each prediction point after a specific time in an actual rainfall event, and giving an alarm in advance when a waterlogging early warning range is reached. According to the method, the submerged water depth of a waterlogging-prone point can be predicted in advance, waterlogging forecasting of a city lacking pipe network data can be achieved, and rainstorm disaster loss is greatly reduced.

The invention provides a multi-target segmentation optimization method for grey green blue measures by coupling a wild dog optimization algorithm with an SWMM, and relates to the technical field of urban inland inundation treatment. According to the method, an optimization model taking the minimization of the total investment cost and the maximization of the runoff reduction rate as targets is constructed by analyzing the accumulated water distribution and determining the measure type, scale and cost. Decision variables comprise pump station drainage flow and the like, the flow is analyzed by adopting a period-by-period water regulation and storage method, and a variable relation is established through multiple regression. In the first round, a Pareto solution set is generated by using a wild dog algorithm, and optimization is carried out by combining an SWMM model, so that a Pareto leading solution set suitable for a data-lacking region is obtained. The urban toughness can be improved.

The invention provides a sewage treatment plant drainage scheduling method and system based on a fluid dynamic model, and relates to the technical field of sewage treatment and drainage scheduling. According to water quality and water quantity coupling historical data of a water inlet, water inlet load levels are divided, and a matching model of the water inlet load levels and drainage flow and frequency is built; collecting interception quantity and pipeline flow data at a water inlet grid, and performing association processing to obtain an interception influence coefficient reflecting the influence of grid interception on pipe network drainage; calculating an allowable drainage range of the pipe network by using a fluid dynamic model, calculating an optimal drainage parameter in the allowable range by combining a current load matching model and an interception influence coefficient, and identifying a hydraulic unbalance road section at the same time; and finally, the optimal parameter serves as a target, the valve opening degree of the unbalanced road section is adjusted, actual drainage of the pipe network can approach the target parameter, overall hydraulic balance is maintained, and drainage scheduling accuracy and pipe network stability are improved.

The utility model discloses a self-drainage flow switcher which comprises valves, an upper cover and a shell, the switcher is specially provided with a drainage station, the drainage station is provided with two valves, a drainage branch pipe where one valve is located is used for drainage, and an air inlet branch pipe where the other valve is located is used for air inlet. And the phenomenon of icing in the device can be effectively avoided.

The utility model discloses a concrete drain pipe with automatic cleaning and anti-blocking functions, which comprises a drain pipe main body, a first positioning ring is arranged on the left side in the drain pipe main body, a second positioning ring is arranged on the right side in the drain pipe main body, and a scraper is arranged between the first positioning ring and the second positioning ring. A transmission shaft penetrates through the middles of the first positioning ring and the second positioning ring, an impeller is installed at the left side end of the transmission shaft, a positioning plate is arranged in the middle of the right side of the drainage pipe body, and a positioning connecting rod is connected to the outer wall of the positioning plate. According to the concrete drainage pipe with the automatic cleaning and anti-blocking functions, the impeller and the transmission shaft structure can be driven to rotate by utilizing the power of water flow flowing in the drainage pipe body, and the speed reduction structure provides rotating power for the cleaning structure, so that mud on the inner wall of the drainage pipe body is cleaned; and clogging or influence on drainage flow caused by accumulation of mud on the inner wall of the pipeline is prevented.

The invention provides a river network regulation and control method under a rainstorm condition. The method comprises the following steps: acquiring pollutant data at key water quality sections of a main river channel and a secondary river channel of a target river network; and constructing a hydrodynamic model of the target river network based on the pollutant data, the water passing area data of the river network, the hydraulic radius data, the section flow data, the water level data and the flow distance data. Acquiring climate data of the urban area where the river network is located, the pollutant concentration of rainstorm runoff, the actual position of the rainwater pump station and the influence range of the rainwater pump station; and determining the drainage flow, the urban area in the drainage area and the runoff water depth generated by the rainstorm. Obtaining the amount of rainwater entering the river. And setting a removal rate parameter for the hydrodynamic model. And simulating the water quality of the river network under the rainstorm condition by using the amount of rainwater entering the river based on the hydrodynamic model after the removal rate parameter is set to obtain a simulation result. According to the method provided by the invention, the river network regulation and control result under the rainstorm condition can be accurately evaluated.

The utility model belongs to the technical field of pipeline drainage / drainage, and particularly discloses a sand washing drainage device which comprises a main drainage pipe and a throttling drainage pipe. The main water drainage pipe is used for being communicated with a low-concave node of a water conveying and distributing pipeline to form a main water drainage channel, and a water drainage opening of the main water drainage pipe is provided with a tail end switching device used for opening and closing the water drainage opening; the throttling water drainage pipe is connected to the periphery of the downstream of the main water drainage pipe in a bypass mode to form a branch water drainage channel, the pipe diameter of the throttling water drainage pipe is smaller than that of the main water drainage pipe, and the throttling water drainage pipe is connected with an adjusting valve used for adjusting the water drainage flow of the branch water drainage channel in series. And a filter is connected in series in the main water drain pipe or the throttling water drain pipe and is positioned at the upstream of the regulating valve. According to the sand washing drainage device, pipeline drainage / drainage can be safely and stably carried out under the condition of high pressure difference.

The surface mine ecological restoration drainage structure comprises a drainage part and reinforcing parts at the two ends of the drainage part, the drainage part comprises a drainage channel and a gate body, the gate body is clamped in the drainage channel, a portal frame is arranged above the drainage channel, and a hoisting assembly on the portal frame is connected with the gate body; the reinforcing part comprises a plurality of reinforcing assemblies which are symmetrically distributed and linearly arranged, each reinforcing assembly comprises a reinforcing base and a supporting plate, the supporting plates are rotationally connected with the reinforcing bases, the reinforcing bases are provided with a plurality of ground nails, and reinforcing nets are arranged between the reinforcing assemblies and the adjacent reinforcing assemblies. The two ends of the reinforcing net are connected with the supporting plates in the two reinforcing assemblies correspondingly. According to the drainage structure, collapse of the surface mine drainage area is effectively prevented through the arrangement of the reinforcing part, and stable operation of a drainage system is guaranteed; and the gate body is matched with the hoisting assembly to control the drainage flow, so that the drainage efficiency and safety in the ecological restoration process of the surface mine are improved.

To disclose a rainfall-induced landslide monitoring and early warning method and system based on the dynamic characteristics of groundwater.SOLUTION: According to one embodiment, rainfall-induced landslide monitoring and early warning is realized based on monitoring the surface drainage flow rate, and monitoring evaluation of slope safety and stability is transferred to monitoring the flow rate at a surface drainage outlet, thereby disclosing a completely new groundwater-monitoring-based rainfall-induced landslide monitoring and early warning technology. This technology can be used for slide surfaces of any shape, and takes into account real-time data on pore water pressure at the bottom of a slide surface, resulting in short calculation times, high calculation efficiency, and simplified monitoring means, as well as higher monitoring accuracy than that of concurrent rainfall-monitoring-based technologies.SELECTED DRAWING: Figure 1

The thermal management assembly comprises a bottom cold plate, a side cold plate, a connecting piece, a collecting piece and a detecting piece, a drainage flow channel is formed in the bottom cold plate, and the side cold plate comprises a current collecting part located at the end of the side cold plate. The connecting piece communicates with the flow collecting part and is used for enabling the heat exchange medium to flow into and / or flow out of the flow collecting part. The collecting piece and the side cooling plate are both arranged above the bottom cooling plate, the collecting piece comprises a collecting cavity, and the position of the collecting cavity corresponds to the position of the flow collecting part and the position of the connecting piece. The detection piece comprises a detection cavity and a detection part, the drainage runner is communicated with the collection cavity and the detection cavity, and the detection part extends into the detection cavity and is used for detecting whether liquid exists in the detection cavity or not. According to the technical scheme, the liquid leakage problem of the heat management assembly can be effectively found in time, the drainage flow channel is arranged in the bottom cooling plate, the structure is simplified, the bottom cooling plate can conduct heat exchange with the outside through heat of leaked liquid, and the heat utilization rate of a heat exchange medium is increased.

The invention relates to the field of intelligent scheduling of drainage systems, in particular to an intelligent scheduling method and system for a tunnel drainage system based on multi-source data fusion, and the method comprises the steps: obtaining a final rainfall model after space-time calibration through obtaining data and carrying out space-time alignment; acquiring a seepage field and a surface runoff field of the tunnel to obtain a nonlinear mapping relation between rainfall intensity and tunnel catchment flow; obtaining tunnel predicted catchment flow through a nonlinear mapping relation, collecting water-collecting well liquid level data of a tunnel drainage system and operation output data of a drainage pump group, and generating drainage pump group control reference parameters; and when it is detected that the difference between the predicted catchment flow and the actually measured drainage flow of the adjacent tunnel is smaller than a preset difference threshold value, a frequency adjustment instruction and a start-stop control sequence are output in combination with the drainage pump set control reference parameters. The space-time precision of rainfall prediction is improved, the interference influence of catchment flow among tunnels is fully considered, and the accurate scheduling of a tunnel drainage system is improved.

The utility model provides a chute for highway engineering, and relates to the technical field of highway chutes. A torrent groove for highway engineering comprises a drainage groove, the drainage groove is fixedly communicated with a torrent groove, the other end of the torrent groove is fixedly communicated with a slow flow groove, a drainage mechanism is arranged between the drainage groove and the torrent groove, and the drainage mechanism comprises a fixing frame fixed between the drainage groove and the torrent groove. According to the device, the drainage flow is controlled by controlling the opening and closing height of the bottom of the flashboard, water flow drives rotating blades to turn over and rotate when flowing through the inside of the torrent groove through the arranged flow slowing mechanism, so that a rotating rod is driven to rotate to reduce the speed of the water flow in the torrent groove, and the impact force of the water flow to one end of the torrent groove is reduced; and when the drainage load is large, diversion is carried out through the arranged diversion channel, so that water in the drainage tank flows into the torrent tank through the diversion channel, and overflow caused by excessive water storage is avoided.

The utility model discloses a lifting type rainwater grating for an urban flood drainage channel, the lower part of the rainwater grating is immersed at the bottom of the flood drainage channel, the middle part of the rainwater grating is positioned and erected on the side bank of the flood drainage channel, the top of the rainwater grating is provided with lifting and hoisting power by a gantry crane, and automatic deslagging units are arranged on the two sides of the rainwater grating; the upper portion of the rainwater grating is of a balance weight solid structure extending to the position above the flood drainage channel, the lower portion of the rainwater grating is of a grid hollow structure extending to the bottom of the flood drainage channel, and the grid hollow structure cleans dirt through circulating motion of an automatic deslagging unit chain wheel. The rainwater grid is automatically lifted / dropped by the gantry crane, rainwater (mountain spring water) in the flood drainage channel is automatically filtered and automatically deslagged on the premise that the flood drainage flow is guaranteed, the deslagging efficiency of the rainwater grid is improved, and the problem that the rainwater grid is difficult to effectively arrange under the condition that urban environment construction conditions are limited is solved.

The application belongs to the technical field of drain valves, and discloses a time-delay valve core, a time-delay drain valve applying the same and a sanitary ware, wherein the time-delay valve core comprises: a body provided with a water inlet area, a water control flow channel and a water passing area, the water control flow channel being communicated between the water inlet area and the water passing area; a first adjusting member rotatably installed on the body, the water control flow channel being configured to change the water discharge flow to the water passing area with the rotation of the first adjusting member; and according to the water discharge requirement of a product, the water discharge flow of the water control flow channel is adjusted by using the first adjusting member, so that the adjustment of multiple water efficiency is realized, and the time-delay valve core is suitable for different water products. The whole structure is simple, the adjustment is convenient, and the applicability is wide.