244results about How to "Effective dredging" patented technology

The invention belongs to the technical field of environmental geotechnics and discloses a river silt cleaning system. The river silt cleaning system comprises a carrier, a silt cleaning device, a mud making device and a mud storage device, wherein the silt cleaning device is fixed on the carrier and goes deep into a river silt seam to clean river silt; the mud making device is connected with the silt cleaning device, smashes the river silt and makes the river silt into mud; the mud storage device is connected with the mud making device and stores the mud. The river silt cleaning system is efficient, convenient, anti-clogging and low in pollution.

The invention discloses a marine gas hydrate and mortar replacement exploitation method and device. According to the exploitation method, the sand blocking accuracy of a mechanical screen pipe is properly lowered to enable stratum mud and sand fine particles to flow into a shaft production pipe column and be discharged under the controllable condition, in the meantime, coarse-particle mortar is injected into a hydrate reservoir continuously, and through matching of a hydrate reservoir sand outlet management technology and mortar injection technology, replacement of the coarse-particle mortar and the stratum fine particles as well as the coarse-particle mortar and a hydrate space is achieved. The exploitation device comprises a production sleeve pipe, a production oil pipe, a shaft water injection pipe and a mortar back-injection pipe, the lower end of the production sleeve pipe is connected with the mechanical screen pipe, and the upper end and the lower end in the mechanical screen pipe are further provided with an upper mechanical packer and a lower mechanical packer correspondingly. The inlet end of the production oil pipe is provided with a gas separating device, and the position, above the upper mechanical packer, of the shaft water injection pipe communicates with the production oil pipe. The mortar back-injection pipe penetrates through the upper mechanical packer and the lower mechanical packer, extends to the bottom border of the production layer section of the hydrate reservoir and is connected with a gravel filling tool. Through the method and the device, the purpose of continuous and efficient production is achieved.

The invention relates to a scale prevention blocking remover for a ternary composite water dependent well. The scale prevention blocking remover comprises the following components in percentage by weight: 40-60% of polyether type macromolecular chelating agent, 10-30% of organic amine scale dissolving agent, 2-10% of emulsifier, 3-9% of stabilizer, 5% of strengthening agent and 15% of deionized water. The scale prevention blocking remover for the ternary composite water dependent well is capable of effectively removing calcium, magnesium, barium and strontium scale and prolonging the scale removal working cycle, has no corrosion on steel and iron and ensures the normal production of scaling oil (water) wells, so that the capacity of the oil (water) wells is recovered.

The present invention discloses a fertilizer additive for improving acidified soil. The fertilizer additive is prepared from the following raw materials by weight: 3-5 parts of smectite powder, 1-2 parts of peat soil, 1-3 parts of peat soil, 3-6 parts of silt, 5-10 parts of smashed deciduous leaf, 6-15 parts of pomegranate rind, 0.3-0.5 part of dicyandiamide, 0.1-0.2 part of thiourea, 10-12 parts of activated carbon, 40-45 parts of pomace, 3-5 parts of shell powder, 3-5 parts of calcium silicon powder, 1-2 parts of lignin, 0.1-0.2 part of an EM microbial agent, 0.1-0.2 part of Bacillus subtilis microbial agent, and 2-4 parts of a complex deodorant.

The invention provides a combined-type dredge ship. The combined-type dredge ship comprises a bow part and a stern part which are connected with each other; the bow part is connected with the stern part in a detachable manner. According to the technical scheme disclosed by the invention, a ship body adopting the detachable connection and electrical drive are adopted, so as to improve defects in traditional small-sized cutter suction dredgers; shallow draft of the ship body can be ensured, and the overall strength of the ship body can be ensured; therefore, the maximum digging width is greatly increased, so that dredging in a coastal zone and shallow tidal flats of inland rivers becomes more efficient, energy- saving, environment friendly and economical.

The invention discloses an operating mechanism of a bucket-wheel dredger and belongs to the technical field of ships. A bow crane is arranged at one end of a ship body. The bottom of the bow crane is movably arranged in a slide way. A check block is arranged in the slide way. The other end of the ship body is provided with a positioning column trolley. A cockpit is arranged on the ship body. A yield meter is arranged on one side of the cockpit. A bucket bridge is arranged below the other side of the cockpit. A bucket wheel is arranged at the end of the bucket bridge. An underwater dredge pump is arranged on the bucket bridge, an environment-friendly reamer is arranged in the bucket wheel, and one end of the bucket bridge is connected with a pivot gearbox. The operating mechanism is simple in structure, easy to operate and good in flexibility, the bow crane can freely move, the operating range is enlarged, the positioning column trolley with the better stability is adopted for ship positioning, dredging accuracy is effectively improved, and meanwhile working efficiency is improved.

The invention provides a device and method for dredging a gas production pipeline blocked due to freezing and belongs to the technical field of natural gas production. The device for dredging the gas production pipeline blocked due to freezing comprises a steam generator, wherein the steam generator comprises a generator body and a water supply device which is communicated with the generator body, and a steam delivery pipe is communicated with the generator body. The method for dredging the gas production pipeline blocked due to freezing comprises the following steps that a Christmas tree needle valve at the end of the gas production pipeline is dismantled; the end, away from the generator body, of the steam delivery pipe stretches into the gas production pipeline and is close to the portion blocked due to freezing; the steam generator is started, high-temperature steam generated by the steam generator reaches the portion blocked due to freezing through the steam delivery pipe, so that dredging is conducted through heating. According to the device and method for dredging the gas production pipeline blocked due to freezing, the portion, blocked due to freezing, of the gas production pipeline is heated within a short range by means of the high-temperature steam generated by the steam generator, so that the portion blocked due to freezing is unfrozen, in this way, the gas production pipeline can be dredged rapidly and effectively, and it is guaranteed that natural gas can be delivered smoothly in the gas production pipeline.

The invention relates to a cleaning and dredging device for an SCR (Selective Catalytic Reduction) catalyst pore. A supporting mechanism comprises a frame and lower supporting beams fixed at the bottom of the frame, wherein a drive shaft and a driven shaft which are respectively connected with the frame are arranged on two lateral plates of a box body through bearings, a motor arranged on the boxbody is connected with the drive shaft through a speed reducer, a catalyst unit is vertically arranged in the frame, at least two connecting beams on a top cover are connected with more than two cross beams and more than two longitudinal beams, two sides of the connecting beams are detachably arranged at the top of the frame through fastening members, regulating and limiting mechanisms are arranged on the joints of the top cover and catalysts, regulating members of the regulating and limiting mechanisms are connected with lower supporting plates and upper supporting plates, the lower supporting plates correspond to the joints of all groups of catalysts, cross limiting grooves at the tops of the upper supporting plates are connected with the cross beams and the longitudinal beams, and the lower part of the box body is also provided with a bubbling mechanism. The device provided by the invention has the advantages of reasonable structure, convenience for installation, capability of integrally cleaning the catalyst unit without crushing the catalysts, and capability of improving the cleaning efficiency.

The invention provides a pipeline dredging device for a concrete pump truck, comprising: a device body, a power mechanism, a drilling rig, chains and electric wires; the power structure is arranged inside the device body, and the drilling rig is arranged in the Outside the device body, the power mechanism provides power support for the drilling machine. The technical problem to be solved by the present invention is to provide a pipeline dredging device for concrete pump trucks that can truly and effectively clear pipeline blockages and further improve work efficiency.

The invention discloses a sludge hopper anti-blocking device for sludge drying treatment. The device comprises a drying machine and a material hopper fixedly arranged at the upper end of the drying machine, wherein the upper end of the material hopper is fixedly connected with a U-shaped plate, a driving motor is fixedly arranged at the upper end of the U-shaped plate, the output end of the driving motor is rotationally connected with a rotating rod through a coupler, the lower end of the rotating rod penetrates through the U-shaped plate and extends downwards, the rod wall of the rotating rodis rotationally connected with the U-shaped plate through a rolling bearing, a reciprocating lead screw is arranged below the rotating rod, a groove matched with the rotating rod is formed in the upper end of the reciprocating lead screw, the lower end of the rotating rod extends into the groove, two symmetrically-arranged sliding blocks are fixedly connected to the lower end of the rod wall of the rotating rod, sliding grooves matched with the sliding blocks are formed in the side wall of the groove, and the reciprocating lead screw is movably sleeved with a bush. With the device of the invention, sludge in the material hopper can be effectively stirred and dredged, so that sludge bridging and blocking in the material hopper can be avoided, and people can use the device conveniently.

The invention discloses a method for predicting road congestion based on taxi positioning, and belongs to the field of transportation. The technical problem to be solved by the invention is how to usethe taxi congestion to provide traffic management departments with vehicle congestion in the future road section so as to more reasonably arrange personnel and optimize the transportation plan. The technical scheme adopted is that the method comprises the steps of S1, constructing a taxi road operation record; S2, establishing a statistical database of the running speed of taxis at different times and different sections; S3, establishing a classification prediction model, that is to establish a decision tree model based on the database; and S4, forecasting and testing: predicting the congestion of the road at a specific moment through the decision tree model by using the taxi running record of a certain section of the road for one week, comparing with the actual congestion situation in the future, and optimizing the decision tree model according to the actual congestion situation to meet the acceptance criteria.

A portable detection device for blockage of an exposed filling pipeline comprises a C-shaped split ring, wherein the split ring is provided with a plurality of threaded mounting holes, and ultrasonicreceiving probes and ultrasonic resonance contacts are inserted into the mounting holes, are in sliding cooperation with the outer wall of the pipeline, and are respectively connected to an integratedcontroller. A dredging method for blockage of an exposed filling pipeline comprises the following steps of collecting reference data; determining the location of the blockage; and dredging the blockage: for the location of the blockage, using the resonance frequency of the corresponding filling material after curing, turning on the ultrasonic variable frequency vibration component and the ultrasonic vibration test component to continuously scan the outer wall of the pipeline at the blocked position, and breaking the solids in the pipeline until the pipeline is dredged. Requiring no other changes on the original pipeline system, the device and method can easily detect and dredge the blockage in the pipeline.

The invention discloses a fertilizer application shovel and belongs to the technical field of agricultural machinery. The fertilizer application shovel comprises a deep loosening shovel and a fertilizer application device, wherein the fertilizer application device comprises a fertilizer guide box and a uniform fertilizer application structure; an outer top wall of the fertilizer guide box is fixedat the lower side of a shovel edge part; an inner cavity of the fertilizer guide box is a fertilizer containing cavity; a fertilizer feeding opening, communicated with the fertilizer containing cavity, is formed in the rear end of the fertilizer guide box; more than one fertilizer application opening is formed in a part, close to a front end part, of the fertilizer containing cavity; the uniformfertilizer application structure comprises a scraping plate and a reciprocating motion mechanism; the scraping plate comprises at least one group of scraping teeth acting on fertilizer in the fertilizer containing cavity; the scraping plate is connected with an inner top wall of the fertilizer containing cavity through a sliding connection structure; the reciprocating motion mechanism comprises adriving motor, a speed reducer and an eccentric shaft; the driving motor is in transmission connection with the eccentric shaft through the speed reducer; the eccentric shaft is in transmission connection with a front end of a connection rod and the rear end of the connection rod is hinged to the front end of the scraping plate. The fertilizer application shovel disclosed by the invention can be used for effectively dredging the fertilizer containing cavity, preventing the fertilizer feeding opening from being blocked and ensuring uniform fertilizer application on soil.

The invention discloses a self-dredging closestool comprising a stool body, a lid arranged over the stool body and a water tank arranged on the back side of the stool body. a urinal and a drain pipe communicating the urinal and a drain port are disposed in the stool body; a dredging mechanism is further disposed in the stool body; the dredging mechanism has a vibrating motor arranged on a bend part of the drain pipe, an eccentric wheel fixedly connected with an output shaft of the vibrating motor and at least one connection rod, two ends of which are fixedly connected with the eccentric wheel and the outer wall of the drain pipe; and the drain pipe is a corrugated pipe. With collaboration and cooperation between the dredging mechanism, a cleaning mechanism and a disinfecting mechanism and a controller, the closestool can be unblocked, cleaned and disinfected in time; and the self-dredging closestool has great application value and promotion value.

A cutter head for dredging soil, which is mountable to the ladder of a suction dredger for dredging soil, and connectable on a suction pipe for removing loosened soil, the cutter head comprising a cage-shaped support construction which is mountable to a drivable rotation shaft extending mainly in extension of the ladder and which has a circumferential surface provided with a number of cutting tools for penetrating the soil, the cutting tools comprising a number of disc-shaped penetration bodies of which the disc planes extend substantially perpendicular to the rotation shaft, so that they can transfer forces to the soil via their peripheral edges.