70 results about "Safety water" patented technology

This application provides an intelligent prediction method and early warning system for coal mine water hazards based on artificial intelligence, which relates to coal mine safety technology. In this solution, the computer device inputs the old kiln water monitoring data within the first preset time period before the current moment uploaded by the sensing layer device into the old kiln water hazard prediction model for prediction processing, and obtains the predicted data of the water inflow in the working face within the second preset time period after the current moment to determine whether an old kiln water hazard accident will occur. By applying this method, it is possible to achieve high-precision prediction of old kiln water hazard accidents in the coal mine area to be predicted, thereby improving the safety level of the coal mine.

The utility model relates to the technical field of water supply equipment, and provides an emergency safe water supply device which comprises a water storage tank and a filtering tank, a moving mechanism is arranged at the bottom of the water storage tank and the bottom of the filtering tank and used for moving the water storage tank and the filtering tank to a use site, and a cleaning mechanism is arranged at the top of the water storage tank and the top of the filtering tank. The cleaning mechanism is used for cleaning the interiors of the water storage tank and the filtering tank. A push handle is held and pushed by hand, under the action of universal wheels, the push handle is moved to a use site and is convenient for a user to carry, a motor drives a synchronous wheel I to rotate, a synchronous belt is linked with a synchronous wheel II to rotate, a U-shaped scraping plate I rotates in a water storage tank, and a U-shaped scraping plate II rotates in a filtering tank; the cleaning device is used for scraping and cleaning the inner walls of the water storage tank and the filtering tank, water dirt is effectively prevented from contaminating the inner side walls of the water storage tank and the filtering tank, and the storage efficiency of drinking water is effectively improved.

The invention discloses a mine drainage method based on a water-saving coefficient method, which comprises the following steps of: establishing an underground water numerical model according to related data of a coal mine, and identifying and verifying the underground water numerical model; determining the distribution of drill holes and constraint points by combining the water yield property of the aquifer and the influence radius of the hydrophobic drill holes; simulating a drawdown caused by a natural condition under a no-pumping condition, and calculating a safe water level drawdown sj in combination with the initial water level; solving parameters; establishing a mine drainage and drainage model based on a water-saving coefficient method according to actual conditions; and operating the mine drainage model to obtain a drainage scheme. The water-saving coefficient method provided by the invention is simple, convenient and flexible, and any node in the numerical model can also be selected as a constraint condition; compared with a response matrix method, the drainage scheme given by the water-saving coefficient method is more scientific and reasonable, the drainage amount and the drainage time are remarkably reduced, reference is provided for water resource saving and ecological protection, and the method has certain significance in research of water-preserved coal mining and development of an underground water management model.

The invention discloses an intelligent safety water cup, and relates to the technical field of water cups, a bottle cap can be detachably mounted at an opening of a bottle body, the bottle cap and the bottle body are locked through a first locking mechanism, one side of a dustproof cover is rotatably connected to the upper end of the bottle cap through a torsion elastic piece, and the other side of the dustproof cover is locked on the bottle cap through a second locking mechanism; a fingerprint unlocking button is arranged on the bottle cap, the second locking mechanism is electrically connected with the fingerprint unlocking button, when the fingerprint unlocking button cannot recognize correct fingerprints or is powered off, the first locking mechanism and the second locking mechanism are in a locking state, and when the fingerprint unlocking button recognizes correct fingerprints, the second locking mechanism is controlled to be unlocked. Or the first locking mechanism and the second locking mechanism are controlled to be unlocked, the dustproof cover is bounced off under the action of the torsion elastic piece, and a health monitoring module is installed on the bottle cap and used for collecting health information of the user when the user touches the bottle cap. According to the invention, the health data of the user can be monitored while the safe locking of the bottle body is realized.

The utility model belongs to the technical field of water supply and drainage engineering, and particularly relates to a double-water-tank type safe water tower which comprises a tank body, the tank body comprises an outer shell and an inner partition plate arranged in the outer shell, the outer shell comprises an upper shell part and a lower shell part, and the interior of the tank body is divided into an inner water tank and an outer water tank surrounding the periphery of the inner water tank through the inner partition plate. The inner water tank is connected with the outer water tank; an included angle between the inner partition plate and the side wall of the lower shell part is an acute angle; the supporting cylinder is located at the bottom of the box body and used for supporting the box body. According to the safe water tower with the two water tanks, continuity and stability of water supply can be effectively guaranteed, when the main water tank is repaired or breaks down, the standby water tank can supplement water in time, uninterrupted water supply is guaranteed, and water supply reliability, safety and maintenance convenience of the water tower are improved.

This invention discloses an auxiliary device for the maintenance of an electrically heated crossarm, relating to the field of safe operation assistance technology. It includes a first platform, a second platform, and a fixing device. The first platform has a lower surface adapted to the upper part of the electrically heated crossarm, allowing it to rest on the upper surface of the crossarm. The first platform includes a front, middle, and rear section extending sequentially. The fixing device is installed at the rear of the first platform to secure it to the electrically heated crossarm. The second platform is connected to the front of the first platform via a connecting assembly, ensuring that the second platform is at a lower horizontal height than the first platform and located at the end of the electrically heated crossarm. This invention solves the technical problems of high safety risks and low work efficiency during online maintenance and cable removal / installation of electrically heated water-cooled crossarms, reduces labor intensity, improves the inherent safety level of equipment maintenance, protects the lives and property of employees, and provides reliable equipment operation support for the stable production of high-end steel grades.

The invention discloses a boiler corrosion dynamic sensing and early warning method based on multi-source information fusion, and belongs to the field of industrial equipment health monitoring, and the early warning method specifically comprises the following steps: collecting and preprocessing multi-dimensional data of operation of each boiler, and integrating the processed multi-dimensional data to generate a corresponding state feature vector; according to the invention, refined expression of the corrosion risk can be realized, the capability of identifying the corrosion hidden danger in advance and the operation safety level are effectively improved, and the perspectiveness and accuracy of early warning are improved; meanwhile, real-time monitoring and early warning of boiler corrosion can be achieved, guarantee is provided for safe operation, it is guaranteed that the early warning effect is kept optimal along with changes of time and working conditions, and the accuracy of corrosion rate prediction is remarkably improved.

The invention relates to the field of coal mine safety mining and underground water control, and particularly discloses an intelligent drainage and pressure reduction comprehensive treatment method based on dynamic drainage density optimization, which comprises the following steps: S1, arranging a monitoring section fixed-distance grid array, and determining point location and hole sealing requirements; s2, adopting a structured mesh to subdivide the three-dimensional model; s3, describing spatial correlation between aquifer parameters and effective porosity by using a spherical variation function model, and performing universal Kriging interpolation in combination with covariables to generate a three-dimensional parameter field; s4, solving a Darwest equation based on a finite difference method to establish a three-dimensional water flow model; s5, correcting a traditional water inrush coefficient formula by using a rock mass integrity coefficient, and setting a third-level early warning threshold value; s6, determining double threshold values of the safe water level and the ecological water level; s7, well density calculation is carried out, and a function is constructed; and S8, establishing a staged drainage scheme to form an ecological regulation and control strategy. According to the method, the drainage amount can be accurately and dynamically regulated and controlled, the water inrush risk is reduced, and ecological disturbance is reduced.

The utility model discloses an unmanned ship for inland river shipping, and belongs to the technical field of unmanned ships. Comprising an unmanned ship, cleaning mechanisms are arranged on the two sides of the unmanned ship correspondingly, each cleaning mechanism comprises a collecting box arranged on the side wall of the unmanned ship, an opening of each collecting box is close to the bow of the unmanned ship, a material stirring roller used for stirring garbage into the corresponding collecting box is rotationally arranged at the corresponding opening, and a garbage conveying assembly is arranged in each collecting box; a garbage treatment structure is arranged at the end, away from the stirring roller, of the garbage conveying assembly. The unmanned ship is used for salvaging garbage, time and labor are saved, efficiency is high, meanwhile, the unmanned ship is suitable for all-weather operation, the risk of casualty accidents of workers falling into water cannot be caused when tasks are executed in unsafe water areas, and the unmanned ship is very convenient to use.

An automatic control device for ground far-end water taking belongs to the technical field of control equipment and comprises a power module, a voltmeter, a self-priming water pump, an electromagnetic valve, a water pressure sensor, a flow sensor, a water pressure switch, a water level switch and a control circuit. One end of the electromagnetic valve is connected with a tap water pipe, the first set of water pressure sensor and the water pressure switch are connected with the side end of the tap water pipe, the water inlet end of the first set of flow sensor is connected with the other end of the electromagnetic valve, and the second set of water pressure sensor and the water level switch are installed in a water pool. The third water pressure sensor is installed at the side end of a water outlet pipe of the self-priming water pump. According to the utility model, full-automatic control is realized, and a safe water level in the pool is ensured; water pressure, flow, water level depth of the pool and other data can be transmitted to a duty room, workers in the duty room can know working conditions of all equipment without arriving at the site, and stable and reliable water supply work of mining area underground water equipment and the like is guaranteed.

The quenching tank comprises a supporting plate and a quenching tank body, the supporting plate is arranged at an opening of the quenching tank body, a moving mechanism is arranged on the upper end face of the supporting plate, and moving plates are arranged at the two moving ends of the moving mechanism respectively. The bottoms of the two moving plates are connected with a groove plate through lifting assemblies correspondingly, a mounting frame is arranged on the upper end face of the groove plate, a plurality of open holes distributed at intervals are formed in the position, located in the mounting frame, of the middle of the groove plate in a penetrating mode, and sliding assemblies are arranged on the front end face and the rear end face of the mounting frame correspondingly. The moving ends of the sliding assemblies at the two ends are connected with the outer end face of a partition plate through connecting blocks, and the partition plate is located at the upper end of the mounting frame. According to the utility model, the opening of the quenching tank body can be blocked, so that foreign matters are prevented from falling into the opening, the purity and the stability of a quenching medium are maintained, the safety level of a working area is improved, and the safety accident risk caused by accidental falling or collision of the foreign matters is reduced.

The utility model discloses safe and efficient road maintenance equipment which comprises a platform trailer, a safe gas storage tank and a safe water tank, the tail of the platform trailer is fixedly connected with a fixed groove plate, the upper portion of the fixed groove plate is connected with a lifting adjusting component, and the lower portion of the lifting adjusting component is connected with a horizontal fine adjustment component. The lower end of the horizontal fine adjustment component is fixedly connected with a connecting plate, a plurality of second connecting rings and a plurality of first connecting rings are arranged on the lower portion of the connecting plate in the front-back direction, the second connecting rings and the first connecting rings are fixedly connected with an air outlet pipe and a water outlet pipe respectively, and the air outlet pipe is provided with a plurality of fire-jet heads controlled by an adjusting valve. The water outlet pipe is provided with a plurality of water spraying heads which are the same as the fire-jet heads in number and located on the same advancing straight line so that the water spraying heads can cool the ground melted by the fire-jet heads. The road surface heating area can be controlled, potential safety hazards to workers are reduced, road maintenance traces are reduced, and the road maintenance quality is improved.

This invention provides a method and apparatus for monitoring water leakage in a waste heat boiler used in copper smelting, comprising: acquiring the average value of water supply over multiple time periods; acquiring the average value of evaporation over multiple time periods; determining a monitoring value based on the average value of water supply, the average value of evaporation, the average value of wastewater discharge, and the average value of sampling; determining whether the boiler is leaking based on the monitoring value and an alarm threshold; and if so, issuing a water balance alarm signal; thereby enabling the timely detection of leaks in the waste heat boiler, improving the intrinsic safety level of the equipment, and reducing the maintenance difficulty for maintenance personnel.

This invention discloses an underground heavy oil spill lifting and conveying system and method, including an underground oil spill tank, an above-ground oil spill tank, a heavy oil spill pump, and a third line for conveying nitrogen. The above-ground oil spill tank is connected to the underground oil spill tank via a first line. The heavy oil spill pump is located on the ground, with its inlet and outlet connected to the underground oil spill tank and pump outlet pipeline, respectively. A self-priming return line is connected to the pump outlet pipeline and is also connected to the underground oil spill tank. The third line is connected to the underground oil spill tank and includes a nitrogen regulating valve assembly and a check valve. The nitrogen regulating valve assembly on the third line is used to pressurize the underground oil spill tank, assisting the heavy oil spill pump in achieving self-priming, avoiding confined space operations and explosion risks, solving the problem of poor flow of atmospheric pressure waste oil into the tank, ensuring reliable intake of high-viscosity oil, and significantly improving the intrinsic safety level of the device.

The invention relates to the technical field of alarming and automatic drainage, in particular to a ship cabin water inflow monitoring and alarming method and an automatic drainage system. The method comprises the steps that a target ship cabin is confirmed, the cabin volume is obtained, the upper limit safety water level and the lower limit safety water level are designed, and the target ship cabin and a pre-constructed drainage pipe are monitored in real time. Obtaining a water level height set and a drainage flow set; obtaining an identification water level height curve graph, an identification drainage flow curve graph, an upper limit safety water level reference line, a lower limit safety water level reference line and a drainage flow upper limit; obtaining a real-time water level height; obtaining a real-time drainage flow; the drainage capacity value is calculated according to the real-time drainage flow, a second-level alarm mode is given out, the first-level alarm mode or the early warning mode or the second-level alarm mode serves as an alarm mode, and automatic alarm of the ship cabin is achieved. The safety, the reliability and the emergency response capability of the ship cabin can be improved.

The invention discloses a hydro-fluctuation belt ecological restoration system and method, and relates to the technical field of ecological engineering, and the system comprises an intelligent sensing layer, a decision control layer and an execution layer; the intelligent sensing layer comprises a hydrological sensor array and an unmanned aerial vehicle remote sensing platform and is used for collecting environment monitoring data and vegetation coverage data of the hydro-fluctuation belt in real time; the decision control layer is used for predicting a water level prediction value of the hydro-fluctuation belt in a future preset time period according to the environment monitoring data acquired by the water level prediction model based on the hydrological sensor array; the execution layer is used for controlling the liftable floating island and the movable biomass treatment equipment according to vegetation coverage data acquired by the unmanned aerial vehicle remote sensing platform and a water level predicted value of the hydro-fluctuation belt, and the liftable floating island is controlled to enable plants, related to ecological restoration, on the liftable floating island to be within a corresponding safe water level range; the movable biomass treatment equipment is used for recycling plant residues. The ecological restoration effect of the hydro-fluctuation belt is improved, and the sustainability of ecological restoration is improved.

The invention relates to the field of water conservancy projects, and provides an air tank body type and installation position collaborative optimization method and system, a terminal and a medium, and the method comprises the following steps: deducing an air tank initial arrangement scheme; the method comprises the following steps: extracting initial values of air tank characteristic parameters, performing numerical simulation according to the initial values, obtaining corresponding response index values, constructing a training sample library, training a prediction model by using a neural network algorithm, and realizing nonlinear mapping from the air tank characteristic parameters to response indexes; and constructing a target function based on the output of the prediction model, performing global optimization by using the prediction model in combination with an optimization algorithm, and searching a global collaborative optimization scheme of the volume and the installation position of the air tank, which not only meets the pipeline pressure-bearing standard and the premise of safe water depth of the air tank, but also minimizes an original target item. The air tank design scheme generation efficiency can be improved, the construction cost is reduced, and the method adapts to various working conditions.

The application discloses a safe water cup based on fingerprint identification, and relates to the technical field of personal drinking water containers, which comprises a bottle body and a bottle cap assembly; the bottle cap assembly is provided with a fingerprint identification module, a control unit, a transmission execution mechanism, a lock catch mechanism and a dust cover; after the fingerprint verification is passed, the control unit drives the transmission execution mechanism to act, and simultaneously releases the locking of the dust cover by the lock catch mechanism and the locking of the bottle body connection by the movable bolt; specifically, the transmission execution mechanism drives the gear transmission limiting piece to rotate, so that the first protrusion thereon is separated from the jacking of the lock catch mechanism, and the user is allowed to operate to open the dust cover; at the same time, the second protrusion thereof releases the depression of the movable bolt, so that the movable bolt is retracted under the action of the elastic piece and is separated from the limiting blind hole on the bottle body, thereby allowing the whole bottle cap to be twisted and opened. The application releases the double mechanical locking through single biological authentication linkage, and realizes the integrated intelligent drinking water scheme with high safety, anti-misoperation and anti-disassembly.

1. The name of the design product: safety type water monitor. 2. The use of the design product: remote terminal unit in the field of smart water. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model discloses a safety water seal, which relates to the technical field of safety water seals and comprises three safety water seals and two communicating pipes, a water pipe connected with a water source end is arranged at the top of one safety water seal, and an automatic valve is arranged at one end, close to the safety water seal, of the water pipe. An electrode type liquid level meter is further arranged on the inner side of each safety water seal, a communicating mechanism is arranged between the three safety water seals and one communicating pipe, a sewage discharging mechanism is arranged between the three safety water seals and the other communicating pipe, the electrode type liquid level meter judges whether the safety water seals are lack of water or not, and the automatic valve is interlocked with the electrode type liquid level meter. When the upper limit of the liquid level is detected, the automatic valve is closed, when the lower limit of the liquid level is detected, the automatic valve is opened, the height of the upper limit of the liquid level is lower than that of an overflow port of the safety water seal, the liquid levels of the multiple safety water seals are automatically controlled at the same time under the condition that only one electrode type liquid level meter and the automatic valve are used, and the problems that the water amount of an existing safety water seal cannot be accurately controlled, and resources are wasted are solved.

This invention pertains to fuel elements for nuclear engineering and the VVER-1200 type water-hydrodynamic reactor, and relates to improvements in the structure of VVER-1000 type fuel elements. Essentially, it modifies the structure of the bottom plug, increases the length of the fuel elements, and the length and mass of the fuel column, thereby increasing the reactor's thermal power to 3300 MW. The reactor core, composed of fuel assemblies, is manufactured taking into account the increased thermal power of the reactor and the increased height of the fuel elements within the fuel assemblies, and can be used within a reactor vessel with a geometry similar to that of a typical VVER-1000 type reactor vessel. As a result, fuel burnup is increased, thereby increasing the reactor's thermal power to 3300 MW, while maintaining the size of the VVER-1000 type reactor vessel and previous safety levels, while simultaneously increasing the overall power generation of the reactor.

The invention relates to the technical field of sewage treatment, and discloses a high-safety water treatment agent adding flowmeter protection device which comprises two liquid conveying pipelines used for conveying sewage treatment agents and a float flowmeter communicated with the liquid outlet ends of the liquid conveying pipelines, and further comprises a protection box arranged on the outer side of the float flowmeter, the liquid outlet end of the float flowmeter extends out of the protection box; the leaked liquid collecting component is communicated with the protection box and is used for collecting the leaked medicament; the alarm component is arranged on the leaked liquid collecting assembly and used for sending out an alarm signal when leakage occurs; and the recycling assembly is communicated with the leaked liquid collecting assembly and is used for recycling the collected medicament. The high-safety protection device for the water treatment agent adding flowmeter aims at solving the problems that in the prior art, when a connector of a float flowmeter collapses and leaks liquid, an agent is directly exposed, monitoring, alarming and recycling cannot be conducted, and therefore safety accidents and environmental pollution are caused.

The utility model relates to the technical field of pipeline carrying, and discloses a high-safety water conservancy pipeline carrying device which comprises a pushing plate and a placing assembly arranged at the top of the pushing plate, and further comprises a protection plate arranged on one side of the placing assembly, a supporting shell is connected to the top of the pushing plate in a bolted mode, and a guide block is fixedly connected to the bottom of the supporting shell; a sliding groove is formed in the top of the pushing plate; through the cooperation of the protection plate, the supporting shell and the limiting mechanism, the protection plate can protect a pipeline, the situation that the pipeline is disengaged due to the uneven ground during transportation is effectively reduced, and therefore the quality of the pipeline is improved, and meanwhile under the cooperation of the transmission mechanism, the installation shell, the fixing shell and the threaded rod, the pipeline is prevented from falling off. The position of the handle can be adjusted according to the height of a worker, the back pressure of the worker is reduced, the worker can push the device conveniently, and therefore the comfort of the worker is improved.

The invention relates to a drinking water ordering method, system and device based on the AI technology and a medium, and relates to the technical field of intelligent water affairs, and the method comprises the steps: generating an initial order based on a historical purchase record according to the remaining water amount monitored in real time when the water amount reaches the triggered ordering water amount based on the change of the water drinking habit of a user; and if the current triggered order water quantity exceeds the allowable range compared with the previous change, triggering the AI telephone to confirm the order in the time period before the residual water quantity is higher than the safe water quantity. According to the application, the creation of the order can be quickly triggered based on the dynamic data of the user-side drinking water, and the behavior preference of the user can be synchronously adapted in response to sudden water consumption fluctuation caused by climate, so that the water supply continuity and the order circulation efficiency are improved.

The application discloses a kind of deep foundation pit underground water level three-dimensional visualization monitoring methods, comprising: generating the three-dimensional underground retaining wall of deep foundation pit;Automatic generation and update are located in the three-dimensional underground retaining wall of deep foundation pit in pit inside and outside water level fitting three-dimensional curved surface diagram;Automatic identification and mark the highest point and the lowest point of pit inside and outside water level;Mark the depth of underground safety water level of deep foundation pit;Automatic generation and update are in three-dimensional position of the relief well of opening state;According to pit inside and outside water level fitting three-dimensional curved surface diagram and its highest point and the lowest point of pit inside and outside water level, and three-dimensional position of pit inside relief well in opening state, three-dimensional visualization monitoring is carried out to deep foundation pit underground water level.The application can carry out visualization monitoring to deep foundation pit underground water level, improves the comprehensiveness, accuracy and timeliness of monitoring.

The invention provides a safe working condition design method for an offshore gas-liquid separator. The safe working condition design method comprises the following steps that different sloshing working conditions related to the gas-liquid separator are determined; establishing a geometric model of the gas-liquid separator, establishing a corresponding computational domain, and determining a complex flow area; finely simulating the liquid tank flow field of the gas-liquid separator in a rolling state according to the geometric model of the gas-liquid separator, and monitoring the water level change of each point to obtain the lowest safe water level position; according to the lowest safe water level position, the corresponding relation between different sloshing working conditions and the lowest safe water level is obtained, and according to the corresponding relation, safe water level working conditions under different sloshing conditions are designed; the method has the advantages that the lowest safe water level can be accurately calculated, so that the safe water level working condition is forecasted, a method and modeling technical support is provided for sloshing safe work and working condition design of a gas-liquid separation device of an offshore hydrogen production system, and the method has important guiding significance for efficient development of new energy hydrogen production.

The invention belongs to the technical field of chemical solution etching, and discloses a safe water supplementing device and a safe water supplementing method.The safe water supplementing device comprises a reaction tank, a liquid supplementing pipe and a cleaning pipe; wherein a reaction solution is contained in the reaction tank; one end of the liquid supplementing pipe is communicated with an external reaction water source, the other end of the liquid supplementing pipe is communicated into the reaction tank, and the liquid supplementing pipe is used for quantitatively supplementing reaction water into the reaction solution in the reaction process; one end of the cleaning pipe is communicated with an external cleaning water source, the other end of the cleaning pipe is communicated into the reaction tank, the cleaning pipe is used for introducing cleaning water into the reaction tank after the reaction is finished and all the reaction solution in the reaction tank is emptied, and the diameter of the liquid supplementing pipe is smaller than that of the cleaning pipe. According to the safe water supplementing device, a water supplementing pipeline and a flushing pipeline can be separated, so that the water supplementing amount is accurately controlled, and the safety problem caused by instant gasification of water in the reaction tank is avoided.

The application discloses a novel tunnel culvert automatic drainage early warning linkage system and relates to the technical field of municipal drainage. Water level sensing and a primary response end collect water depth. Three threshold values of early warning water level, drainage starting water level and dangerous water level are compared. When the drainage starting water level is reached, the automatic drainage pump is started. According to the water level drop rate, the drainage capacity abnormality is evaluated. On-site forced control and secondary alarm end switch the municipal traffic signal lamp to red light through the standard signal interface at the same time of starting drainage, and sound and light warning is carried out. Remote early warning and system reset end push the graded early warning to the remote platform through multi-mode communication, and link the IP camera to capture the on-site video. After the water accumulation is reduced to the safe water level, the system is automatically reset. If the water level rises during the reset process, the system is immediately interrupted. The application realizes the integrated linkage of water accumulation detection, forced traffic control, on-site secondary alarm and remote platform monitoring, and improves the traffic safety and emergency response capability under the tunnel culvert water accumulation scene.

The utility model relates to the field of water circulation equipment of a submerged chain conveyor, in particular to a filtering device for reflux water of the submerged chain conveyor, which comprises a reflux tank, a first filtration tank; a second filtration tank; one end of the shunting pipeline is connected with the return tank, and the other end of the shunting pipeline is respectively connected with the first filtering tank and the second filtering tank; the filtering inclined nets are obliquely arranged in the first filtering tank and the second filtering tank respectively; the discharging hand holes are respectively formed in the outer walls of the first filtering tank and the second filtering tank; the standing tank is respectively communicated with the first filtering tank and the second filtering tank, the standing tank is provided with an overflow port, and a precipitation conical hopper is arranged at the bottom of the standing tank; and the collecting tank is connected with the overflow port. Impurities in backflow water of the slag dredger are filtered, so that water flowing back into the water supplementing tank is clear, the sensitivity of the water supplementing detection switch is not affected, and it is guaranteed that water in the water supplementing tank is always at a safe water level.