613results about "Sewer systems" patented technology

The invention discloses a municipal pipeline desilting device, and relates to the technical field of pipeline desilting, and the municipal pipeline desilting device is technically characterized by comprising a main body, mounting brackets are symmetrically mounted on the inner wall of the main body, a desilting mechanism is arranged on the mounting brackets, a walking mechanism is arranged on the outer circular surface of the main body, and the desilting mechanism comprises a sludge crushing assembly, a pipeline inner wall cleaning assembly and a power assembly; and the sludge crushing assembly comprises a linkage column which is rotationally connected to the inner side of one of the mounting supports and penetrates through the mounting supports, and a drill bit is fixedly mounted at the end, located on the outer side of the main body, of the linkage column. The efficient and comprehensive cleaning of the sludge on the inner wall of the pipeline is achieved, the problems of a traditional dredging device in the aspects of sludge caking treatment and incomplete cleaning are solved, and a powerful guarantee is provided for long-term smoothness of municipal pipelines and healthy operation of cities.

The invention relates to a continuous-navigation tide gate chamber constructed on a soft soil foundation and a construction technology of the tide gate chamber. The tide gate chamber comprises a gate chamber bottom plate, a gate, gate piers and prefabricated pile foundations. The precast pile foundation is fixed below the lock chamber bottom plate, the lock chamber bottom plate comprises a bottom sill, and a gate and a gate pier are installed above the lock chamber bottom plate; the gate is positioned between the bottom sills; the gate piers are located on the two sides of the gate. The construction technology of the large-scale floating type steel box door comprises the steps of early-stage calculation, prefabrication of a single prefabricated bottom plate, installation of the prefabricated pile foundation, installation of the lock chamber bottom plate and the gate piers and installation of the gate, the prefabricated pile foundation, the prefabricated formwork and the cast-in-place bottom plate of large-size underwater cast-in-place concrete form an integral structure, and the large-scale floating type steel box door is placed on the lock chamber bottom plate; the cofferdam-free overwater construction is realized, the construction time is shortened, and the cofferdam-free overwater tide gate chamber structure is suitable for constructing tide gates in large estuary regions in a continuous navigation manner.

A downspout end cover protects and closes a lower end of a cylindrical rain gutter downspout assembly. The cover includes a body that forms a continuous hollow channel for passage of collected rainwater. An aperture at the back of the body is sized to attach to the downspout, and a front cylindrical or oval aperture emits collected rainwater. A door is rotatably attached to the front of the body at a top of the front of the body by a hinge and when closed, prevents entry of animals, insects or blown debris. The front of the body may be sloped and the door may rest against an inset ledge that protects the door and seals the downspout end cover against entry of insects and preventing detachment of the door from the body. The hinge may be offset from the back surface of the door by an arm.

The invention provides a low-interference drainage pipeline defect and state automatic detection device and method, and relates to the technical field of defect detection.The low-interference drainage pipeline defect and state automatic detection device comprises an inspection detection system and two fixed detection systems, and each fixed detection system comprises a semicircular-arc-shaped pipe wall fixing structure, a fixed detection transmission control system and a plurality of first laser probes; the fixed detection transmission control system is installed on the pipe wall fixing structure, the multiple first laser probes are installed at different positions of the pipe wall fixing structure respectively, and the multiple first laser probes are connected with the fixed detection transmission control system; the inspection detection system comprises an inspection track and an inspection robot, the inspection robot comprises an inspection robot carrier, a robot controller and a plurality of second laser probes, the plurality of second laser probes are respectively mounted at the top and the bottom of the inspection robot carrier, and the inspection robot carrier moves along the lower surface of the inspection track in a hoisting manner. According to the invention, various defects can be detected when the drainage pipeline is in normal operation and drainage.

The invention belongs to the related technical field of pipe network leakage detection, and provides a comprehensive detection method and system for leakage of an underground sewage pipe network in an industrial park in order to solve the problems that existing pipe network leakage detection is inaccurate, large-area detection is difficult and the like. Performing inversion on the acquired data by adopting prior constraint, and judging a detection section of suspected leakage abnormity according to a resistivity profile; further detecting the detection section with the suspected leakage abnormity by using a high-density resistivity method and an induced polarization method, refining a grid based on an electromagnetic method result and prior information, introducing directional smooth constraint and minimum gradient support to perform inversion constraint on acquired data, and positioning a leakage area; sampling to judge the authenticity of the leakage of the detected area, and peeping, measuring and positioning the leakage area through the pipeline robot; and rapid identification and delineation of the pipe network leakage risk area of the industrial park are realized through cooperation of multiple methods.

To suppress danger in construction work and deterioration in workability by reducing flow passage obstruction in a sewer and an influence of a large pipe diameter with respect to a fixing jig for a sensor which measures information from the pipe bottom of the sewer.SOLUTION: A fixing jig 20 for a sensor comprises an arcuate jig body 21 fitted with a water level sensor 22, guide holes 25a, 25b formed on both sides of the jig body 21, and fixtures 23a, 23b and 24a, 24b for fitting both sides to an inner wall 3a of a sewer 3. Anchor bolts 28 embedded in the inner wall 3a of the sewer 3 are inserted into through holes 27 and guide holes 25a, 25b of the fixtures 23a, 24a and fastened with nuts to fix the fixing jig 20 to the inner wall 3a.SELECTED DRAWING: Figure 2

The utility model relates to the field of cleaning tools, and discloses a rainwater gutter garbage cleaning device which can be matched with the shape of the bottom of any arc-shaped rainwater gutter to ensure that garbage at the bottom of the gutter can be efficiently and thoroughly removed, so that the cleaning efficiency is improved, the sanitation and safety of a production environment are ensured, and finally the production quality and the working efficiency of a whole pharmaceutical enterprise are improved. The device comprises a handheld part and a collecting part, the handheld part is in a vertical stick shape, one end of the handheld part is connected with the collecting part, the collecting part comprises an arc-shaped bottom plate and a back plate, the rear end of the arc-shaped bottom plate is connected with the back plate to form a collecting cavity used for containing garbage in the rainwater gutter, and the arc-shaped bottom plate is configured to be attached to the arc-shaped bottom of the rainwater gutter. The radian from the front end to the rear end of the arc-shaped bottom plate is gradually increased, the arc-shaped bottom plate is flexible, an inclined plane is arranged at the front end of the arc-shaped bottom plate, and the inclined plane is configured to assist in shoveling garbage in the rainwater gutter when the collecting part moves in the axis direction of the rainwater gutter.

A multifunctional construction site cleaning robot and a cleaning method using the same are provided. The robot includes a chassis part; a bottom rotatable function part, including a sweeper unit, an iron remover unit, a leaf remover unit and a cutter unit; a debris treatment part, including a compression unit, a debris container and a pulverizing unit; a container exchange part, including a movable gripper unit and openable containers, the openable containers being configured to contain sundries collected by the sweeper unit and the iron remover unit; a spray part, configured to prewet or dedust a construction site; and a water transfer part, including an extensible water discharging unit and an extensible water pumping unit, the extensible water discharging unit being configured to pump accumulated water, and the extensible water pumping unit being configured to pump accumulated water from a bottom of a pit to the ground.

The utility model discloses an algae suction device for a sedimentation tank, which comprises a track arranged in the sedimentation tank and a sludge discharge vehicle advancing along the track, and further comprises a collecting assembly, a water tank, a water pump, a water pump and an algae suction device, and the collecting assembly is suitable for collecting floating objects in the sedimentation tank; the lifting assembly is arranged on the sludge discharging vehicle, and the output end of the lifting assembly is connected with the collecting assembly so as to drive the collecting assembly to move in the vertical direction; one end of the algae discharging pipe is communicated with the collecting assembly, and the other end of the algae discharging pipe is communicated with the outside so that the floating objects collected by the collecting assembly can be discharged outwards. The sedimentation tank is simple in structure, and floating objects in the sedimentation tank are cleaned by additionally arranging the collecting assembly moving along the surface layer of the water surface, so that the burden of tank surface cleaning workers is relieved, and the phenomenon that the filter tank is blocked can be avoided.

The present invention discloses a mud discharge device for a water tank used for mining, comprising a water tank body, a dilution mechanism for diluting sludge is arranged at the top of the water tank body, a first motor is fixedly arranged at one side of the water tank body, a first fixed block is fixedly arranged inside the water tank body, and a first chute is opened at the lower end of the first fixed block. The first motor of the present invention drives the first screw to rotate, so that the first slider moves along the inside of the first chute through the first screw, drives the second fixed block to move, and thus drives the sludge pump to move, and starts the second motor, the second motor drives the second screw to rotate, so that the second slider moves along the inside of the second chute through the second screw, drives the sludge pump to move, and facilitates the comprehensive cleaning of the sludge at the bottom of the water tank body, so that no manual cleaning is required during cleaning, and the mechanical cleaning efficiency is higher than the manual cleaning efficiency, thereby improving the cleaning efficiency and facilitating the rapid use of the water tank body.

The invention provides an underground pollution discharge traceability device, and belongs to the technical field of underground pollution discharge. Comprising a ball body, driving mechanisms are arranged at the inner bottom of the ball body at equal intervals, a buoyancy adjusting mechanism is arranged at the inner upper end of the ball body, and the bottom of the buoyancy adjusting mechanism penetrates through the ball body. A first motor is started to drive a gear to be meshed with an arc-shaped rack, a shielding arc plate is promoted to slide in an empty groove and an arc-shaped groove, opening and closing of the empty groove are flexibly controlled, a ball floats in an underground drainage channel, and the gravity center of the ball is stabilized at the bottom through a load sensor so as to be kept stable; the first motor is started to open the empty groove and drive the adjusting assembly, then the second motor drives the lead screw, the sliding plate drives the miniature spiral propeller to extend out of the empty groove, the flowing direction of the ball can be changed, the ball can be pushed during stranding, and when adjustment is not needed, the driving mechanism is contained in the empty groove, the surface of the ball is smooth, and the ball can drift back in the underground drainage channel conveniently.

The invention relates to the technical field of municipal engineering, in particular to a sewer plugging device. According to the technical scheme, the sewer plugging device comprises an inflatable air bag, a sliding cylinder structure capable of relatively sliding front and back, an umbrella-shaped supporting frame and a fixed supporting piece, the inflatable air bag is fixedly arranged at the front end of the sliding cylinder structure, and the umbrella-shaped supporting frame is in driving connection with the sliding cylinder structure; the fixed supporting piece is fixedly arranged at the tail end of an outer supporting rod of the umbrella-shaped supporting frame. The device has the beneficial effects that the whole structure does not need to utilize power mechanisms such as electric power or hydraulic power mechanisms and can effectively adapt to the underwater operation environment.

A system and method for measuring or for estimating flow or flowrate of a fluid, including wastewater inflow or infiltration, using non-contact depth-based flow measurement, including: receiving a depth sensor signal from an ultrasonic depth sensor positionable over a manhole channel above an outgoing pipe's crown; receiving a temperature signal from a temperature sensor positionable within the manhole channel; receiving one or more data input signals; calculating a distance to a surface of the fluid based on the received depth sensor signal; and determining a depth of the fluid in the manhole channel based on the calculated distance. Flow velocity may be calculated using Manning's equation or the Hazen-Williams equation, with flow rate subsequently determined using the continuity equation. Alternatively, flow velocity and flow rate may be estimated using a machine learning model trained on simulated or historical time-series data of flow rate, flow velocity, and flow depth, along with pipe attributes, to generate real-time flow estimates based on current and prior flow depth measurements.

The pipe network pump station desilting robot of the double-flow-channel suction pump structure comprises a robot shell body, a mounting support is fixedly mounted at the bottom of the robot shell body, a variable-frequency speed regulator is fixedly mounted on the outer side of the mounting support, crawler wheels are arranged on the inner side of the variable-frequency speed regulator, and the crawler wheels are fixedly mounted on the outer side of the mounting support. A double-flow-channel suction pump assembly is arranged on the outer side of the robot shell body, and a self-adaptive adjusting assembly is arranged on the outer side of the robot shell body. According to the pipe network pump station dredging robot of the double-flow-channel suction pump structure, by arranging the double-flow-channel suction pump assembly, a strong negative pressure suction environment can be formed, the sludge adhesion amount can be reduced, efficiency reduction caused by reduction of the cross section of the flow channel is avoided, the negative pressure strength of the main suction flow channel is supplemented, the air suction phenomenon is avoided, the self-adaptive adjusting assembly is arranged, and a pressure sensor monitors the main suction flow channel in real time; closed-loop control of blocking early warning, active intervention and risk elimination is achieved, a visual monitoring assembly is arranged, the equipment fault maintenance frequency is reduced, and the operation efficiency is improved.

According to the pilot valve, the vacuum valve, the vacuum valve system and the method for recovering the initial condition of the vacuum valve, different from an existing pilot valve which is only used for controlling negative pressure to enter a main valve so that the main valve can open or close a drainage channel, after improvement, related cavities of the pilot valve are communicated, the negative pressure is introduced into the main valve, and meanwhile the negative pressure enters the main valve; the liquid level difference is also introduced into the related cavity of the pilot valve, so that the pilot valve can still keep the state in the water pumping process of the vacuum valve even if the liquid level difference is lower than a preset value, and the vacuum valve continuously pumps water until the liquid level in the facility is lower than the bottom of the water suction pipe, and air is sucked into the related cavity of the pilot valve to dilute the negative pressure amount of the related cavity; therefore, the pilot valve can restore to the initial position, the vacuum valve is triggered again, and the initial liquid level of the vacuum valve can restore to be consistent.

A trenchless, rodent-blocking apparatus for creating a one-way check valve, or gate, within for a sewer cleanout operable to permit through flow of sewer down the sewer pipe but prevent rodent entry up the sewer pipe. The disclosed assembly inserts vertically into a sewer cleanout without requiring excavation or demolition.

This invention relates to the diagnosis of sedimentation in drainage networks, specifically providing an unmanned underwater vehicle (UUV) based maintenance decision-making method for drainage pipeline sedimentation diagnosis and waterlogging warning. The UUV of this invention consists of an integrated hull inside the pipeline and a manhole box. The integrated hull inside the pipeline includes a Doppler ultrasound module, a three-axis gyroscope, a high-definition infrared camera, a main controller, a deep learning development board, baffles, a cabin cover, a cabin, fins, towing rings, and a navigation interface. The Doppler ultrasound module, three-axis gyroscope, high-definition infrared camera, navigation interface, and deep learning development board are each connected to the main controller. The fins, towing rings, cabin cover, and baffles are connected to the cabin.

The utility model discloses a sewage suction purification vehicle which comprises a vehicle head and a vehicle plate, one end of the vehicle plate along the length direction is fixed with the vehicle head, a water pumping mechanism, a crushing mechanism, a separating mechanism and a sewage tank are sequentially arranged on the vehicle plate, the two adjacent mechanisms are communicated with each other, and the sewage tank is fixedly arranged on the vehicle plate; the smashing mechanism comprises a smashing box, a stirring motor, a stirring shaft and stirring blades, the stirring motor drives the stirring shaft to rotate, fixing rods are symmetrically and fixedly arranged at the bottom end of the stirring shaft, the ends, away from the stirring shaft, of the two fixing rods are obliquely arranged in the direction of the stirring motor, and a plurality of friction protrusions are fixedly arranged on the bottom faces of the two fixing rods. One end of the fixing disc is fixed to the smashing box, the end, close to the stirring shaft, of the fixing disc inclines downwards, an opening is formed in the position, close to the stirring shaft, of the fixing disc, and friction tooth marks meshed with the friction protrusions are fixedly arranged on the fixing disc. The sewage treatment device is used for solving the technical problems of pipeline blockage and low sewage treatment efficiency.

The utility model relates to the technical field of road engineering drainage, in particular to a pavement drainage pipe and a pavement drainage structure. The pavement drainage pipe comprises an outer pipe; the outer pipe is arranged on a permeable layer of a highway pavement, one end of the outer pipe is a closed end, the other end of the outer pipe is an open end, the closed end is located in a highway and is higher than the open end, and permeable holes are formed in the pipe wall of the upper portion of the outer pipe in the radial direction. The utility model solves the problem of insufficient drainage capacity.

The invention discloses a water quality concentration acquisition and real-time detection system and method, and relates to the field of environmental monitoring, the system comprises a sampling scheduling module, an analysis detection module, a trigger judgment module, an interpolation modeling module and a linkage control module. According to the method, the historical concentration data and the environmental factors are modeled by introducing the machine learning algorithm, the migration trend of the pollutants in the water body can be predicted, the acquisition nodes are scheduled in advance to sample a high-concentration area possibly occurring, missing detection and delayed response are effectively avoided, and the early warning capability of pollution emergencies is improved. By fusing remote sensing images, ground sampling data and hydrodynamic information and utilizing an improved geographically weighted regression model and a graph neural network algorithm, concentration interpolation prediction is carried out on a non-point distribution area, and the problem that traditional point location type monitoring space coverage is insufficient is solved.

The utility model relates to an electro-hydraulic quick-closing gate device which comprises an electro-hydraulic actuator, a guide rod and a gate which are sequentially connected. The electro-hydraulic actuator comprises a hydraulic oil cylinder, a hydraulic oil tank, an electric control box, an energy storage device, a power mechanism, a first reversing mechanism and a fixing support. The first end of the power mechanism is connected with the hydraulic oil tank, the second end of the power mechanism can communicate with the first end of the hydraulic oil cylinder and the second end of the hydraulic oil cylinder, the energy accumulator can communicate with the second end of the hydraulic oil cylinder, and the first reversing mechanism is configured to switch the second end of the hydraulic oil cylinder between communicating the second end of the power mechanism and communicating the energy accumulator. The hydraulic oil cylinder is arranged in the middle of the fixing support, the hydraulic oil tank and the power mechanism are arranged at the first side end of the fixing support, and the accumulator is arranged at the second side end of the fixing support. The electro-hydraulic quick-closing gate device can meet the condition that a gate needs to be closed quickly when rear-end equipment breaks down, meanwhile, the gate can be closed quickly when a system is in a power failure state, and the safety of rear-end process equipment and personnel is ensured.

To efficiently monitor a sewerage network.SOLUTION: A sewerage network environment monitoring device monitors an environment of a sewerage network provided within a prescribed area. The sewerage network environment monitoring device comprises: a first acquisition part to acquire first sensor data indicating environment of main pipes near a position at which a first sensor is fitted from the first sensor fitted to at least one manhole among a plurality of manholes disposed on the main pipes of the sewerage network; a detection part to detect change of the environment in the main pipes by monitoring variation in the first sensor data in real time; a second acquisition part to acquire second sensor data, which is continuously measured by a second sensor fitted to a manhole on a branch pipe around the position at which the first sensor is fitted among branch pipes connected to the main pipes, from a storage medium for storing the second data for a prescribed period in the manhole of the branch pipe, when the change of the environment is detected by the detection part; and a specification part to specify cause of the detected change of the environment in the main pipes by analyzing the acquired second sensor data.SELECTED DRAWING: Figure 2A

The utility model discloses a cleaning device for silt garbage in a grit chamber of a drip irrigation pump room, which belongs to the technical field of silt cleaning and comprises a vehicle body, a collecting shovel is rotatably connected to the front of the vehicle body, an adjusting component is fixedly connected to one end of the upper surface of the vehicle body, and a first filter frame is fixedly connected to the inside of the vehicle body. A second filter frame is fixedly connected to the interior of the first filter frame, a sludge pump is fixedly connected to the upper surface of the second filter frame, a telescopic pipe is fixedly connected to the outlet end of the sludge pump, and a separation assembly is fixedly connected to the middle end of the upper surface of the vehicle body. By arranging the adjusting assembly and the collecting shovel, the angle can be adjusted, the collecting shovel can be tightly attached to the bottom face of the grit chamber, large-area and high-efficiency cleaning operation is achieved in combination with driving of the crawler wheels, automatic pushing of garbage is achieved by moving the moving plate and the pushing plate in the vehicle body, garbage is prevented from being accumulated in the vehicle body, and the working efficiency is improved. Effective separation of the sludge and the garbage is ensured, and subsequent treatment is facilitated.

The utility model provides a rain sewage separator which comprises a shell, the top of the inner wall of the shell is fixedly sleeved with a circular barrel, a water filtering frame is fixedly welded to the lower surface of the circular barrel, an extrusion assembly is arranged in the circular barrel, and the extrusion assembly is fixedly welded to the lower surface of the circular barrel. The extrusion assembly comprises a rotating rod, an auger piece, a supporting plate, a movable plug, a connecting rod, a rectangular plate, a guide hole, a spring and a limiting plate, the rotating rod is rotationally installed at the top of the inner wall of the circular barrel through a bearing, the top end of the rotating rod extends to the position above the circular barrel, and a first handle is fixedly installed on the upper surface of the rotating rod. Leaves and silt impurities contained in rainwater or sewage can be conveniently filtered, so that blockage of a sewage pipe or a rainwater pipe due to excessive leaves or silt impurities is effectively avoided, the rectangular frame can be conveniently taken out under the action of the rectangular frame and the rectangular holes, and the leaves and silt impurities in the rectangular frame can be cleaned.

The utility model relates to a positive and negative pressure switching unloading protection system for a vacuum pump, which is applied to a tank body of a suction-type sewer scavenger and comprises the vacuum pump and a four-way valve, the four-way valve is provided with a first connecting port communicated with the tank body, a second connecting port communicated with the air inlet end of the vacuum pump, a third connecting port communicated with the air outlet end of the vacuum pump and a fourth connecting port, and the four-way valve has a first state, a second state and a third state; when the sewage suction truck carries out sewage suction operation, the four-way valve is in a first state, the vacuum pump generates suction force to the tank body of the sewage suction truck, when the sewage suction truck needs to discharge sewage, the four-way valve is in a third state, the vacuum pump supplies air into the tank body of the sewage suction truck, and when the four-way valve is switched between the first state and the third state, the four-way valve is switched to the third state firstly, and the vacuum pump supplies air into the tank body of the sewage suction truck. The air inlet end and the air outlet end of the vacuum pump are communicated, switching is carried out until unloading of the vacuum pump is completed, and the internal pressure conversion process is gentle in the positive and negative pressure switching process of the vacuum pump.

The present invention provides an intelligent dredging robot and a dredging management method for an elevated bridge deck drainage system, which belongs to the technical field of robots, and specifically comprises: based on the sequence of dredging treatment of drainage systems at different potential danger locations, a plurality of dredging treatment schemes are generated; the treatment time of different potential danger locations under different dredging treatment schemes is determined based on the distribution data of different potential danger locations; the treatment time effectiveness of different dredging treatment schemes and the available treatment schemes under the dredging treatment schemes are determined in combination with the water accumulation risks at different potential danger locations; based on the historical traffic flow data, the treatment time effectiveness and the treatment time effectiveness of the available treatment schemes at different potential danger locations, the dredging treatment schemes among the available treatment schemes are determined; and the dredging treatment schemes and the dredging robots are used to dredge the drainage system at the potential danger location, thereby avoiding the impact of water on the elevated bridge surface on traffic.

The invention relates to a sewer pipe inspection system with an inspection unit (2) attached to a push rod (6) and which can be advanced via the push rod (6), comprising an angle detection system (26) which is designed such that, when the inspection unit (2) is advanced by means of the push rod (6), it adds up the angles of the changes in direction (18, 20, 22) occurring during the advancement.

The utility model provides a cleaning sewage suction truck with a vacuum intercommunication function, which comprises a tank body, a partition plate is arranged in the tank body and divides the tank body into a clean water tank and a sewage tank, a vacuum pump is arranged below the tank body, and a vacuum intercommunication ball valve for connecting the clean water tank and the sewage tank is arranged at the top of the tank body. And vacuum is formed in the two tank bodies through the vacuum intercommunication ball valves. According to the cleaning suction-type sewer scavenger with the vacuum intercommunication function, the two independent tank bodies of the clear water tank and the sewage tank are connected through the straight-through ball valve, and vacuum can be formed in the two tank bodies. Therefore, the function that the two tank bodies of the suction-type sewer scavenger are communicated in a vacuum mode can be achieved, storage selection is increased, the clean water tank can achieve self-water-sucking operation through the function, and the environmental adaptability of the suction-type sewer scavenger is improved.

The utility model discloses a sewer anti-mosquito gate convenient for cleaning impurities, and relates to the technical field of anti-mosquito gates. According to the technical scheme, the anti-mosquito gate is characterized by comprising an anti-mosquito gate body, a first flow guide plate is obliquely arranged in the anti-mosquito gate body, a second flow guide plate is arranged at the position, located above the first flow guide plate, of the other end in the anti-mosquito gate body, and a water falling opening is formed between the first flow guide plate and the second flow guide plate; a movable gate plate is arranged at the position, located at the water falling opening, of the anti-mosquito gate body, rotating shafts rotationally connected to the anti-mosquito gate body are arranged at the tops of the two sides of the movable gate plate, and a filtering assembly is arranged on the surface of the first flow guide plate. The utility model aims to provide a sewer mosquito-proof gate which is convenient for cleaning impurities.

The invention belongs to the technical field of drainage robots, and particularly relates to a crawler-type drainage robot for cleaning urban drainage crossings, an engine is fixedly mounted on the inner wall of a machine body, a suspension is fixedly connected to the outer wall of the bottom of the machine body, a water suction pump is fixedly mounted on the outer wall of the top of the suspension, and the water suction pump is driven by stretching adjustment of a spring hose. The water pumping position can extend to a low-lying position for water pumping, so that self-adaption of the water pumping height is achieved, meanwhile, the water pumping opening of the spring hose is aligned with a sewer opening, high-pressure water pumping suction force can suck up part of light garbage blocking the sewer opening, the light garbage is separated from the sewer opening, and the blocking condition of a sewer is relieved. Therefore, the drainage efficiency is improved, and the drainage mode is improved.