604results about How to "Improve dredging effect" patented technology

The invention provides a determining method for polluted water bed mud environmental protection dredging depth, comprising analyzing and evaluating the releasing risk and ecological hazard risk of the pollutant at different layer side of the mud based on the vertical distribution of the pollutant in the bed mud by researching the relation of the releasing of bed mud pollutant nitrogen, phosphor or the like and the corresponding pollutant content and the ecological hazard evaluation corresponding with the content of the bed mud pollutant containing heavy metal; and determining the bed mud dredging depth based on the divided corresponding risk grade. After dredging, the anticipated release rate of the key pollutant such as nitrogen, phosphor at the new surface layer of bed mud-hydrosphere achieves or exceeds a release intensity threshold and the latent ecological hazard index of the heavy metal at the new surface layer of bed mud achieves or exceeds a hazard threshold, therefore the basis of the dredging depth is determined.

The invention particularly relates to an urban underground round rainwater pipeline dredging device, solving the problem that cleaning of the existing rainwater pipeline wastes time and labor, and harms the bodies of constructors. The urban underground round rainwater pipeline dredging device is characterized in that flexible landing legs are arranged at the lower side of a rack, the upper end face of the rack is provided with a guiding slideway which is provided with a sliding trolley, hollow rotating shafts which are connected into a whole penetrate through the sliding trolley, the tail part of the connected hollow rotating shaft is provided with a high-pressure water supply pipe, a speed reducer and a motor are arranged on the sliding trolley, the middle part of the connected hollow rotating shaft is provided with a supporting disc, the circumferential surface of the supporting disc is provided with plastic idler wheels, the front end of the connected hollow rotating shaft is provided with a smashing device or a cleaning device, the side wall of the connected hollow rotating shaft is provided with a plurality of high pressure spraying heads, the smashing device comprises a smashing disc, the circumferential surface of the smashing disc is provided with plastic idler wheels I, the front end of the smashing disc is fixedly provided with smashing teeth, the cleaning device comprises a cleaning disc, and the circumferential surface of the cleaning disc is provided with plastic idler wheels II and cleaning hair brushes. The structure of the urban underground round rainwater pipeline dredging device has the advantages of simple structure, convenient operation and low cost.

The invention relates to a silt removing machine for channels, in particular relates to the silt removing machine for sewage-discharging channels, which is used for removing deposit of a closed sewage-discharging channel in the metallurgical enterprise. The silt removing machine comprises a traveling mechanism, an excavating mechanism and a conveying mechanism, wherein the traveling mechanism is the support of the whole device, and a chassis of the traveling mechanism is fixedly provided with a supporting plate; the excavating mechanism is obliquely arranged at the front part of the traveling mechanism, and is connected with the traveling mechanism by utilizing a bracket, and is liinked with an excavating power box distributed on the supporting plate by a driving chain; the driving chain transfers the power to an excavating chain by the excavating power box; and the excavating chain drives an excavating bucket to operate circularly; the conveying mechanism is arranged above the traveling mechanism and behind and below the excavating mechanism, and is obliquely arranged on the supporting plate by a supporting rod; and silt cleaned by the excavating mechanism is conveyed into a silt transport vehicle following behind the device. The silt removing machine has the advantages that manpower can be replaced for realizing the silt removal of the sewage discharging channels, so that the labor intensity of workers is low, the operating efficiency is high, and the silt removal can be implemented at any season and any weather. The silt removing machine is widely used for silt removing occasions such as channels and settling ponds.

The invention relates to a sewer desilting device, belonging to the technical field of municipal construction mechanical equipment. The sewer desilting device comprises a drive part, a control part, a storage part and an operation part, wherein the drive part and the control part are respectively connected with the operation part, the storage part communicates with a contaminant discharge device of the operation part, the operation part comprises a rack, a walking system, a mud-scraping system and a desilting system, and the walking system, the mud-scraping system and the desilting system are respectively arranged on the rack to form a whole. The sewer desilting device provided by the invention is safe and reliable, is high in desilting rate and strong in adaptability, is time-saving and labor-saving, has the advantages that the labor intensity of workers is alleviated, the desilting is thorough, the operation efficiency is high, etc, the mud-scraping system is arranged aiming at the silted hard mud, and therefore, the sewer desilting device also has the good desilting effect for seriously silted pipelines.

The invention discloses an in-situ purifying dry powder preparation for polluted water sludge and belongs to the field of environmental pollution treatment. According to the invention, microbial bacterium powder and an enzyme preparation are compounded and attached to a carrier to form the dry powder preparation; the microbial bacterium powder is prepared by singly culturing different microbial strains in a graded way and then mixing, freezing and drying a fermentation liquor; the enzyme preparation is a mixture of cellulase, neutral protease, low-temperature amylase and lipase; and the carrier is a mixture of zeolite, kaolin and diatomite. Through putting the dry powder preparation into the polluted water, the sludge in a river channel can be degraded and the content of organic substances in the water can be reduced; meanwhile, a large amount of human, material and financial resources can be saved, the operation is simple and convenient and periodic dredging work is not needed; and the in-situ purifying dry powder preparation for the polluted water sludge, disclosed by the invention, can be suitable for various polluted water bodies, has the advantages of wide application range and obvious dredging effect and is an efficient, clean, pollution-free, safe and environment-friendly water environment purifying and sludge decomposing agent.

The invention relates to the technical field of silt clearing devices and discloses a pool bottom silt clearing device comprising a left frame. A top frame is fixedly connected to the top of the rightside of the left frame, and a right frame is fixedly connected to the right side of the top frame. A partition plate is fixedly connected between the two sides of the inner wall of the left frame, afirst motor is fixedly connected to the top of the partition plate, and one end of an output shaft of the first motor is fixedly connected with a first bevel gear. According to the pool bottom silt clearing device, the purpose that moving of silt sucking heads is facilitated is achieved, silt clearing work of the pool bottom of a large range is advantageously achieved, using by people is facilitated, rising and falling of the silt sucking heads are facilitated, silt at different height can be sucked, and thus silt clearing effect is improved; multi-time silt clearing is not needed, the work efficiency is improved, the silt sucking heads are prevented from being plugged, and the influence on silt clearing is avoided, and mounting of the device is facilitated; and the stability of the deviceis improved, and the service life of the device is prolonged.

The invention discloses a biological composite enzyme pipeline dredging agent, which contains the following ingredients: 5 to 30 percent of protease, 4 to 25 percent of cellulose enzyme, 2 to 20 percent of lipase, 0.05 to 2 percent of wetting agent and 0.05 to 2 percent of thickening and tackifying agent; the ratio of all the ingredients is counted by weight percentages, and the rest is water. The dredging agent is applicable to the pipelines of families, hotels, etc., which has the functions of wetting, infiltration and attachment, and can decompose the stoppage caused by hair, grease, fiber, etc., and the effect is good and the nature is mild; the invention is a green product which is in line with the requirements of environmental protection; furthermore, the invention overcomes the shortcomings that the existing dredging agent contains strong acid, strong alkali or strong oxidant, therefore the pipeline is easy to be corroded, etc., thus having better development and application values.

The invention discloses an integrated device for dredging a drainage pipeline based on high pressure rotating jet flow. The device is composed of three parts, namely, a control assembly, a washing assembly and a dredging assembly, wherein a magnetic valve and a central control unit in the control assembly are connected through necessary signal lines. A hollow stainless steel tube is sleeved with a high pressure nozzle and a screw rod in the washing assembly and fixed through a fixing support on a bearing, and the hollow stainless steel tube is connected to a high pressure rubber tube on a dredge car. A mud blocking trough in the dredging assembly is installed on the hollow stainless steel tube, and a sucker is installed in the mud blocking trough and connected to a mud sucking pipe which is connected with a mud storage trough through a mud pump. Compared with a traditional method for cleaning silt in a drainage pipeline, the integrated device has the advantages of being safer, more efficient and water-saving, the water flow of jet grouting can crush sediments and obstacles which are deposited at the bottom of the drainage pipeline, and the screw rod is used to stir fully; therefore, the purpose of complete dredging is achieved, and the integrated device is an effective silt cleaning device.

The invention discloses a pipeline dredging and guiding device for water conservancy construction. The pipeline dredging and guiding device comprises a rotating head, an outer cylinder, an inner cylinder, a core assembly and a rear end cover, wherein the rotating head comprises a conical shell-shaped main body, cutter teeth are arranged on the inner side wall of the main body, blades are arrangedon the outer side wall of the main body, and the blades are gradually shortened from the large end to the small end of the main body; an outlet of a water outlet pipeline is arranged by facing a cutting face of the rotating head; jet holes for ejecting water flow are formed nearby the bottoms of water injection cavities of the inner cylinder, and the water flow ejected from the jet holes just impacts the blades to drive the rotating head to perform rotary cutting; a mandrel is connected with a bullet structure through a connecting rod fixed on the inner wall of a core tube to be fixed in the core tube in a suspended manner, the rear end of a rotating shaft is mounted on the rear end cover, and a hollow cavity of the rear end cover is communicated with the water injection cavities of the inner cylinder; a discharge port penetrating through the inner cylinder and the outer cylinder is formed in the lower side wall, close to the rear end cover, of the core tube. The device is high in dredging capacity and quite high in dredging efficiency.

The invention discloses a municipal pipeline sediment removal device. The municipal pipeline sediment removal device includes a sediment removal box; a sediment removal pipe and a sediment removal shaft are arranged in the sediment removal box; a sediment removal motor for driving the sediment removal shaft to rotate is slidingly arranged in the sediment removal box; an inner gear and an outer gear are arranged on the sediment removal shaft, and the inner gear and the outer gear synchronously rotate with the sediment removal shaft; a driving gear is arranged on an output shaft of the sediment removal motor; the driving gear has a first state in which the driving gear is engaged with the inner gear, and a second state in which the driving gear is engaged with the outer gear; and a driving device for driving the driving gear to switch between the first state and the second state is arranged in the sediment removal box. In use, the driving gear of the sediment removal motor is engaged with the outer gear, the sediment removal motor drives the sediment removal shaft to rotate to clean a pipeline; when a sediment removal plate is blocked, the driving device drives the driving gear to move, the driving gear is switched into the second state, and in this time, the sediment removal shaft rotates reversely, the sediment removal shaft exits the blocking state, the sediment removal efficiency is improved, and the adaptability of the sediment removal device is improved.

The present invention relates to a solid chemical pipe cleaning agent and its preparation method. It is characterized by that it is formed from 52-68% of granular sodium hydroxide, 11-19% of sodium carbonate, 15-21% of high test bleaching powder, 4-10% of sodium dodecyl benzene sulfonate and 0.02% of essence. Said invention has no need of adding metal aluminium, can obtain good cleaning effect, and can be used for killing pathogenic bacteria and insect eggs. Said invention also provides its preparation method and production steps.

The invention discloses an underground pipeline dredging method. The underground pipeline dredging method is characterized in that sludge in a pipeline is gathered to a designated position through a pipeline dredging device and then removed out of the pipeline through external force. By means of the underground pipeline dredging method, the dredging effect of the pipeline can be effectively improved, the amount of sludge in the pipeline is greatly lowered, the occurrence ratio of sludge in the pipeline is controlled below 5%, smoothness of the pipeline is ensured, and drainage efficiency of an urban drainage system is improved.

A submersible dredging vehicle relates to an underwater dredging technology. The submersible dredging vehicle is provided with a vehicle body, wherein a submersible sewage pump is arranged on the vehicle body, a drain pipe is arranged on a liquid outlet of the submersible sewage pump, four spiral propeller type driving wheels are arranged on the two sides of the vehicle body, spiral directions of the adjacent two driving wheels are opposite, a water retaining cover plate is arranged on the vehicle body, the vehicle body is provided with four driving motors connected with the four driving wheels and is further provided with a water storehouse and a draining pump, the draining pump is provided with a check pump, the water storehouse is provided with a water inlet pipe and a gas identification rod, an electric valve is arranged on the water inlet pipe, and the electric valve, the submersible sewage pump and the four driving motors are connected with a controller. The submersible dredging vehicle can move forwards and backwards, carry out translation, turn around by taking any one driving wheel as a circle center and by taking the center of the vehicle body as the circle center, move and the like through the turning matching of the four driving wheels. The submersible dredging vehicle disclosed by the invention has the advantages of high locomotive maneuverability, simplicity and convenience in position change, easy handling, no dead corner during working, more thorough cleaning, high dredging efficiency and strong subsidence and sliding capabilities.

The invention discloses a pipeline dredging robot in the technical field of pipeline cleaning. The robot is provided with a shell, rolling wheels, a driving shaft, a motor and a connecting flange; themotor is fixedly connected to the outer wall of the shell, the side wall of the shell is embedded into the connecting flange, an output end of the motor is connected with the driving shaft, the two ends of the driving shaft are connected with the rolling wheels, one end of a sleeve shell is fixedly connected with one end of a connecting column, a first stepping motor is installed at the other endof the sleeve shell, a lighting torch parallel to the sleeve shell is fixedly connected to a mounting base, a camera is installed on the lower portion of one end of the lighting torch, the other endof the connecting columns is fixedly connected with a dredging box, and a sewage pump is installed in an inner cavity of the dredging box. Accordingly, blockages are broken and discharged, secondary blocking of the blockages is prevented, and meanwhile the stability of a robot body can be kept in the dredging process; the dredging effect is good, and the practicability is high.

The invention discloses a cleaning agent and application thereof to cleaning of ceramic filter plates. The cleaning agent mainly comprises the following components: metal ion complexing agent, organicpenetrant, main agent A and main agent B, the main agent A is at least one of water-soluble organic acid, and the main agent B is soluble salt corresponding to the main agent A. The main agent B in the cleaning agent can promote the insoluble metal salt of the main agent A to be dissolved into aqueous solution, so that the cleaning effect is enhanced, the metal ion complexing agent and the organic penetrant can generate a synergistic effect, so that fine particle-sized metallic minerals blocking filter holes can be dissolved and insoluble attachments and organic chemicals can be cleaned off,consequently, a ceramic plate can be fully and thoroughly cleaned, the production efficiency of a ceramic filter is improved, the service life of the filter plate is prolonged, and the production costis reduced.

The invention discloses a simple hydrological-hole dredging device. The simple hydrological-hole dredging device comprises a first dieselized pumping machine, a second dieselized pumping machine and a stirrer. The first dieselized pumping machine is connected with hard plastic pipes and used for pumping out underground water at the bottom of a hydrological hole. The second dieselized pumping machine is connected with soft plastic pipes and used for injecting water into the hydrological hole. The stirrer comprises a thin rope and a metal rod. The thin rope is connected with one end of the metal rod. A cloth strip or a sponge is arranged at the other end of the metal rod and used for stirring the underground water in the hydrological hole. According to the simple hydrological-hole dredging device, circulating of the water in the hydrological hole is achieved through the two dieselized pumping machines; and as the underground water in the hydrological hole is stirred through the stirrer, the hole dredging efficiency is greatly improved, and the hole dredging time is shortened. The simple hydrological-hole dredging device is simple in structure and convenient to install, and can be repeatedly used.

The invention discloses a robot applied to underground sewage pipeline silt removing. The robot comprises a robot framework, a hydraulic pump, a control box, a walking mechanism, underwater cameras, light supplementing lamps, a silt recycling device and a main silt discharge pipe; the walking mechanism comprises a walking motor and walking wheels; the silt recycling device is movably arranged at one side of the robot framework and comprises a packing auger mounting support, a connecting frame, a rotary shaft, a dirt suction port, a packing auger motor and a packing auger device, one end of themain silt discharge pipe is fixedly embedded in the inner side of the dirt suction port, and the end, away from the packing auger mounting support, of the main silt discharge pipe is fixedly connected with a water inlet of the hydraulic pump. By means of the robot, a pipeline which is severe in silting and makes it impossible for people to enter is subjected to desilting; meanwhile, a breakage part of the inner wall of the pipeline is detected through the underwater cameras controlled by the control box, the silt recycling device and the main silt discharge pipe are applied to removing siltedgarbage, removing can be completed comprehensively within a short time, and the desilting effect is obvious.

The invention relates to a water conservancy project pipeline dredging method, and belongs to the technical field of water conservancy projects. The invention aims to solve the problem of sludge accumulation and blockage of the pipeline due to accumulation of sludge inside the water conservancy project pipeline. The method comprises the following steps of 1, placing a water conservancy project pipeline dredging device into a pipeline to be cleaned; step 2, flushing the interior of the water pipe into high-pressure water, so that the water in the water pipe is filled into the water storage tankand is filled with the flushing pipe; step 3, starting the driving motor, driving the motor to drive the pipeline sludge flushing device, and scattering the sludge in the pipeline; step 4, starting an electric push rod to carry out scrubbing operation on the pipeline; step 5, repeating the step 2 to the step 5 until the whole pipeline is subjected to dredging operation, closing the power source of the dredging device, and evacuating the dredging device from the pipeline. By means of the method, the scrubbing operation can be carried out in the pipeline, so that the silt inside the pipeline can be cleaned up, the dredging effect is good, and the reliability is high when using.

The invention discloses a water conservancy project water supply and drainage pipeline internal wall dredging device. The water conservancy project water supply and drainage pipeline internal wall dredging device comprises a pipeline and a mounting seat; a U-shaped frame is connected to the right side wall of the mounting seat; a first motor is connected to the right end of the U-shaped frame; a lead screw is connected to the left side output end of the first motor; a nut seat is screwed to the external wall of the lead screw; fixing rods are symmetrically connected to the upper and lower endsof the nut seat; guide sleeves are connected to the end parts of the fixing rods; the guide sleeves are movably arranged at the cross ends of the U-shaped frame in a sleeving manner; horizontal supporting rods are connected to the middle parts of the left ends of the fixing rods; the horizontal supporting rods run through the mounting seat; and a dredging shell is connected to one ends, extendinginto the cavity of the pipeline, of the horizontal supporting rods. The water conservancy project water supply and drainage pipeline internal wall dredging device has the advantages that the structural design is reasonable, the device is convenient for dredging works, the dredging efficiency is enhanced, the device is convenient for cleaning impurities out of the pipeline in a flowing manner, andthe dredging effect of the internal wall of the pipeline is further improved.

The invention discloses a compound remediation agent for clearing soil contaminated by petroleum and a remediation method of the compound remediation agent. The compound remediation agent is preparedfrom the following components in parts by weight: 10-20 parts of biochar, 3-5 parts of monopotassium phosphate, 4-6 parts of calcium nitrate, 3-6 parts of perlite, 3-8 parts of ceramsite, 2-5 parts ofwood chips, 5-10 parts of vermiculite, 2-6 parts of magnesium sulfate, 3-6 parts of pine needle, 5-8 parts of chicken manure and 15-30 parts of microbial preparation, wherein the microbial preparation is prepared from the following bacterium suspension in parts by weight: 10-15 parts of bacillus thermophiles, 5-8 parts of bacillus natto, 6-10 parts of aspergillus niger, 2-6 parts of bacillus subtilis, 2-5 parts of sulfur bacteria, 3-7 parts of photosynthetic bacteria and 2-5 parts of saccharomycetes; the bacterium suspension is obtained by performing fermentation and culturing on various microorganisms and has the concentration being larger than or equal to 10<5>cfu / mL. The invention discloses a remediation device for performing soil remediation by using the compound remediation agent forclearing the soil contaminated by the petroleum. Through the method for remediating the soil with the compound remediation agent provided by the invention and the remediation device, the compound remediation agent can be fully contacted to the contaminated soil, so that the remediation effect is remarkably improved to 96.5 percent, and secondary pollution to the soil cannot be caused.

The invention relates to the field of sewer pipe dredging devices, and provides an air pressure type sewer pipe dredging device, which is characterized by comprising an air outlet end, a compressed air storage tank, an inflator, a plunger and a trigger and also comprising a balloon, two air pipes, a two way valve, a quick plug and a dredging tool, wherein on end of one air pipe penetrates the balloon; one end of the other air pipe is connected with the balloon, and the other end of the other air pipe is connected with the inlet end of the two way valve; and the other end of the air pipe penetrating the balloon and the other end of the air pipe connected with the inlet end of the two way valve are connected with an air outlet end of the dredging tool through the quick plug. The balloon is inflated by the dredging tool, so that the balloon is expanded to block the opening of the sewer pipe; the air is compressed and stored in the compressed air storage tank, and after a certain pressure is reached, the trigger is triggered to instantly release the compressed air from the air pipe penetrating the balloon to the sewer pipe, so that obstruction in the sewer pipe is dispersed under the instant pressure impact to dredge the sewer pipe.

The invention provides ditch dredging equipment applied to hydraulic engineering. The ditch dredging equipment comprises an automatic advancing device and a self-adaptive dredging device installed onthe automatic advancing device, the automatic advancing device is used for dragging the dredging equipment to advance in the ditch extending direction, and the width of the automatic advancing devicecan be adjusted according to the actual width of a ditch; the self-adaptive dredging device is used for removing silt in the ditch in the process of advancing along with the automatic advancing device, and the width of the self-adaptive dredging device can be adjusted according to the actual width of the bottom of the ditch; the slit at the bottom of the ditch can be automatically removed, the width of a frame of the automatic advancing device can be adjusted according to the actual width of the ditch, and the height of the self-adaptive dredging device can be adjusted according to the actualheight of the ditch; and the opening angles of two sets of guide plates, playing a role in guiding and gathering the slit, of the self-adaptive dredging device can be adjusted according to the actualwidth of the ditch. The ditch dredging equipment can adapt to different ditches, and the dredging effect on the slit in the ditches is better.

The invention discloses a traffic jam prediction control system based on big data. The system comprises a central processing unit, a big data processing center, a traffic flow monitoring system, a GPS navigation system, a road condition acquisition module, a route acquisition module, a route congestion time calling module, a route congestion analysis module, a replacement route planning module, a control system, a wireless transmission module and a display terminal. Road conditions of an original route are comprehensively mastered through the GPS navigation system, the traffic flow monitoring system and the road condition acquisition module, the road condition information is acquired through the road condition acquisition module, and whether a road section is congested or not is analyzed. According to the comparison between the predicted congestion duration of the congested road section and the time required for the vehicle to arrive at the congested road section, whether the vehicle encounters a traffic jam condition when arriving at the congested road section is predicted, so that a replacement route is selected according to a prediction result, and the time wasted when the vehicle encounters the traffic jam during driving is reduced; and dredging efficiency and the dredging effect of the congested road section are improved to a certain extent.

The invention belongs to the field of portable medical instruments, particularly provides a medical instrument capable of achieving negative pressure flushing, and relates to a negative pressure flusher. The negative pressure flusher aims to solve the problem that an existing flusher cannot flush a guide pipe smoothly when blocky materials are mixed in flowing liquid. The negative pressure flusher comprises a syringe, a piston arranged in the syringe, a piston rod connected to the piston from one side and a breaking component connected to the piston from the other side. A connector is arranged on the syringe and can be connected with a guide pipe. When the syringe is full of flushing liquid, the piston rod is pushed, the guide pipe is flushed by the flushing liquid, and meanwhile a breaking device smashes blocky secreta flowing in the guide pipe; and in addition, the negative pressure flusher can be used in cooperation with a flushing bag and a drainage bag, repeated flushing on the guide pipe is achieved, the flushing effect of the negative pressure flusher is improved, and a good dredging function is achieved on the guide pipe.

The invention belongs to the technical field of agricultural water-saving irrigation and particularly relates to an economical anti-blocking gravity type underground drip irrigation system. The economical anti-blocking gravity type underground drip irrigation system comprises direct-current micro pump water lifting, water transportation and distribution, interval water supply and a pressure control irrigation device. The interval water supply device starts the pressure control irrigation device to conduct irrigation in cycles, and in each round of an irrigation process, mechanical dredging is conducted on a water outlet of the pressure control irrigation device, and therefore blocking of the water outlet of the irrigation device is effectively prevented. By means of the economical anti-blocking gravity type underground drip irrigation system, water feeding can use small water flow, an economical scheme for achieving anti-blocking gravity type drip irrigation for peasants poor in economic condition and small in operation scale in scattered non-electricity small-scale greenhouses, and water lifting and irrigation cost is low.

The invention discloses a multifunctional riverway treatment robot. The robot comprises a hull, electric push rods are arranged on the two sides of the hull, the electric push rods are vertically arranged, the movable ends of the electric push rods are downwards arranged, the movable ends at the lower ends of the electric push rods are provided with silt pulling wheels, wherein the silt pulling wheels comprise silt pulling wheel blades, and the silt pulling wheels are arranged at the bottom of the hull; material sucking pipes are arranged at the head end of the hull, wherein a plurality of material sucking pipes are vertically distributed side by side, and the material sucking pipes are fixed through a fixing frame; and the fixing frame is connected with a limiting sliding block, the limiting sliding block is connected with a driving support, the driving support is arranged on a hydraulic cylinder, the upper ends of the material sucking pipes are connected with a negative pressure box,the negative pressure box is connected with a fixed pipeline through a telescopic negative pressure pipe, the fixed pipeline is connected with a liquid pumping pump, and the liquid pumping pump is connected with a silt dewatering device. According to the robot, the structure is stable, the operation is stable, the riverway silt removal treatment function can be realized, the riverway silt can bedredged, the riverway slit which is difficult to flush away can be pumped-off and transferred, the desilting effect is good, the desilting efficiency is high, and the existing use requirements are met.

The invention discloses a canal desilting device for an agricultural water conservancy project. The canal desilting device comprises a desilting device body, a water filtering ring net is welded to one end of the desilting device body, the outer wall of the water filtering ring net is sleeved with a fixed clamping ring, an installing plate is welded to the top of the fixed clamping ring, a pump machine is fixed to the other end of the desilting device body through a fixing support, the outer wall of the desilting device body is sleeved with a fixed clamping plate, the fixed clamping plate is connected with the top of the installing plate through an installing rod, and a fixing plate is welded to the center of the upper portion of the installing rod. The device is fixed to the bottom of a desilting ship through an installing pin shaft, when the installing pin shaft rotates, the angle of the desilting device body is changed, and the desilting effect of the device can be improved; and according to the device, the pump machine is fixed to one end of the desilting device body through the fixing support, the water filtering speed of the device during running can be improved through the attraction effect of the pump machine, and the desilting speed is increased.

The invention discloses a movable river sludge dredging device, and belongs to the technical field of river sludge dredging. The problem that an existing river sludge dredging device is poor in sludgedredging effect is solved. The movable river sludge dredging device is characterized by comprising a movable ship body, wherein the movable ship body moves above a river, an air cylinder is started,shrinkage is not limited any more, a first motor is started, a protective cover falls, a second double-shaft motor is started, a drill bit and a second crushing cutter move left and right to carry outdredging operation, a first double-shaft motor is started, the second crushing cutter on a third rotating shaft is driven to rotate to carry out dredging operation, the first double-shaft motor drives a spline sleeve on a spline shaft to rotate, an incomplete gear rotates, reciprocating dredging operation of the drill bit and the second crushing cutter in the vertical direction is achieved, a second pump is started, sludge is pumped into a stirring box, a second motor is started, a first crushing cutter is driven to carry out stirring and crushing, the sludge is pumped by a first pump to be subjected to subsequent collection and treatment, and the advantage of being good in sludge dredging effect is achieved.

The invention relates to a dredging system of a sewage pipeline with large-pipe diameter and a method thereof. The dredging system comprises a small downhole dredger, an overground operation system, an air-charged rubber gate and an overground charging-discharging device. The small downhole dredger comprises a dredger body and an underwater stirring device arranged on the dredger body; the small downhole dredger is connected with a ground operation control system through a rope and a control line; when in operation, the underwater stirring device stirs up sludge at the bottom of a pipeline. Before small downhole dredger works, the air-charged rubber gate is placed in a downstream pipeline of a dredged pipe section and charged with air so as to lead water level in the dredged pipe section to rise up, thus facilitating the operation of the small downhole dredger. On the ground, an operation system is arranged so as to control the operation of the small downhole dredger in the pipeline. After accomplishing the operation in one pipe section, the small downhole dredger is lifted out from the pipeline, simultaneously the air in the air-charged rubber gate is discharged and the rubber gate is taken out from the pipeline. Former sewage accumulated in a working pipeline flows away fast and the sludge stirred up is also washed away together, thus removing the sludge in the pipeline. The dredging system can realize dredging of the sewage pipeline with large-pipe diameter; and the diameter of the dredged pipeline is over 1meter, in addition, the operation done by workers in the pipe is not needed, and the device has strong processing capability, small volume, flexibility, low cost and operation expense, and simple technology.