39results about How to "Reduce direct washout" patented technology

The invention relates to an ecological environment-friendly permeable spur dam structure, which is composed of a bottom protection structure and a spur dam structure. The bottom protection structure consists of a geotechnical water-proof material layer, a slurry block stone layer, a block stone layer, and crushed stone in sequence from bottom to top. The crushed stone layer is only laid within the scope of the spur dike structure, and gabion cages are set on the outer edge of the bottom protection structure, and then the bottom protection structure is leveled, and the spur dike structure is installed on the leveled gravel layer. The spur dam structure is spliced ​​by dam root, dam body and dam head; the dam root is spliced ​​by several solid components, the bottom is a plane, and the upper part is a slope structure composed of a water-facing slope and a back-water slope. The dam body is spliced ​​by several permeable components. The upper part of the permeable components is a slope structure composed of a facing slope and a backwater slope, and a permeable hole is set in the middle. The permeable hole of the permeable component is in the form of an arch hole, which reduces the turbulence of the water flow at the permeable hole and the erosion of the dam body, and reduces the damage to the fish in the water body.

The invention discloses a high-efficiency baffling plate type demister which comprises baffling blades, water collecting tanks, a first supporting assembly and a second supporting assembly, wherein the two ends of the baffling blades are respectively connected with the first supporting assembly and the second supporting assembly, the baffling blades are arranged in parallel, the water collecting tanks are arranged on the baffling blades at intervals, and the water collecting tanks extend in the width direction of the baffling blades; each water collecting tank comprises an arc plate, the arc plate comprises a connecting end and a free end, and the connecting ends of the arc plates are connected with the surfaces of the baffling blades. Therefore, compared with the prior art, the high-efficiency baffling plate type demister disclosed by the invention has the advantages of high demisting efficiency and good demisting effect.

The invention discloses a regenerating device for an ineffective natural gas desulfurization solution. The regenerating device comprises an ineffective natural gas delivering pipeline of which the input end is connected to the output end of a solution regenerating pump; the output end of the ineffective natural gas delivering pipeline is connected to a liquid inlet of a solid impurity removing unit, a liquid inlet of a solution decolorizing unit, a liquid inlet of a thermostable salt removing unit and a liquid inlet of an organic impurity removing unit; for liquid outlets of the solid impurity removing unit, the solution decolorizing unit, the thermostable salt removing unit and the organic impurity removing unit, the liquid outlet of the former unit is communicated with the liquid inlet of the latter unit. According to the regenerating device disclosed by the invention, the problems that solid impurity particles cannot be thoroughly removed, decolorized activated carbon is easily broken to form new impurities, organic impurities in the solution cannot be removed and the like in the regenerating process of an existing ineffective natural gas desulfurization solution are solved; meanwhile, four units are connected in parallel by the ineffective natural gas delivering pipeline; corresponding treatment units can be selected according to actual conditions of the desulfurization solution, so that treatment materials are saved and the process progress is accelerated.

The invention discloses a method for conducting slope support and greening through specific hole-planted shrubs. The method comprises the following steps that (1), a material is selected; (2), a slopesurface is selected to be finished and measured; (3), shrub seeds are soaked or shrub seedlings cultivated into seedlings are prepared to manufacture nutritive vegetation soil; (4), a mold is adoptedto manufacture a vegetation concrete module containing the shrub seeds; (5), anchor rods are supported, iron wire bracing and iron wire net erecting are conducted among the anchor rods, and a layer of geotechnical cloth is laid; (6), the thick nutritive vegetation soil is laid, and seeds are planted in the soil; and (7), management after seeding and later-period regular watering and fertilizing protection are conducted. The method for conducting slope support and greening through the specific hole-planted shrubs is suitable for slope surfaces of various rock textures and soil textures and particularly suitable for rock and soil side slope surfaces which are high steep and unsmooth, are provided with multiple small rock gaps and are under bad weather conditions.

The invention discloses an immersed nozzle of H-shaped leakproof steel and belongs to the technical field of steel continuous casting. The immersed nozzle of the H-shaped leakproof steel comprises a nozzle main body, upward blocking dams, upward inclined steel outlets, downward blocking dams and downward inclined steel outlets, the upper part of the nozzle main body is of a bowl opening structure,the lower part of the nozzle main body is of a hollow cylindrical structure with a smooth inner cavity, and the bottom end of the nozzle main body is of a closed structure; the upper part of the bowlopening structure is in a large-aperture hollow cylindrical shape, and the lower end of the bowl opening structure is of a conical structure; the middle lower part of the hollow cylindrical structureof the nozzle main body is symmetrically provided with the pair of upward inclined steel outlets, the lower parts of the upward inclined steel outlets are symmetrically provided with the pair of upward blocking dams, the lower parts of the upward blocking dams are symmetrically provided with the pair of downward blocking dams, and the lower parts of the downward blocking dams are symmetrically provided with the pair of downward inclined steel outlets. Direct flushing of molten steel on a solidified shell can be reduced, occurrence of steel leakage is avoided, the production efficiency is improved, and the production cost is reduced.

The invention relates to a subgrade scouring preventing and reinforcing structure, in particular to a subgrade scouring preventing and reinforcing structure for a gabion wall and groin system combination. The subgrade scouring preventing and reinforcing structure comprises groins, a road shoulder retaining wall and gabion walls, the multiple groins distributed at intervals are distributed on the portions, located on one side of a riverway, of the road shoulder retaining wall, the groin root ends of the groins are fixedly connected with the road shoulder retaining wall, and the groin head endsof the groins obliquely stretch into the riverway. According to the technical scheme, a groin system is arranged on the outer side of the road shoulder retaining wall of a road, the adjacent groins are connected into a whole through the gabion walls, and the gabion walls, the groin system and the road shoulder retaining wall are combined in a built-in mode to form a steady water damage preventionstructure; direct scouring of water flow scouring on the prevention structure and indirect destruction of water flow scouring on road slopes are reduced, the road water damage risk is reduced, and safety and unobstruction of the road are guaranteed; and meanwhile, it can be guaranteed that long-deflecting-flow groins are protected against water damage destruction, and the subgrade scouring preventing and reinforcing structure is mainly suitable for a deflecting-flow groin system with the long groin body and the river reach with the high water flow impact force.

The invention provides complete equipment for treating chromium wastewater. The complete equipment comprises a reaction tank, a pressure filter, a mechanical filter and an activated carbon absorber, wherein the reaction tank is provided with a water level meter, a float switch, a pH sensor, a chemical inlet and stirring equipment, the mechanical filter is provided with a high-pressure gas inlet pipe and a gas outlet pipe, and the interior of the mechanical filter is divided into an upper coarse filtering layer and a lower refined filtering layer. The complete equipment has the advantages that the complete equipment is simple in structure, reasonable in design, capable of lowering equipment operation cost, increasing chromium wastewater treatment efficiency and effect and effectively controlling feeding quantity, visual in liquid level, fast in wastewater filtering and high in safety; filtered water is quite clean after being absorbed by activated carbon and can be directly used by other working procedures or used for cleaning, environment pollution is avoided, water resource utilization rate is increased, and waste is avoided.

The invention discloses a road and bridge construction technology. A large-span bridge gantry crane comprises temporary track bridges arranged on the two sides of an existing river-crossing bridge, sliding tracks are arranged on the temporary track bridges, the large-span bridge gantry crane further comprises a gantry crane portal frame arranged above the existing river-crossing bridge, supportinglegs are connected to the lower portion of the gantry crane portal frame, and sliding groove bases corresponding to the sliding tracks are arranged at the lower ends of the supporting legs. The large-span bridge gantry crane ingeniously starts from the construction angle, gantry crane equipment is arranged above an existing river-crossing bridge, hoisting operation is easily achieved, precise hoisting equipment is provided for widening or dismantling or maintaining construction of the existing river-crossing bridge, and the wading construction precision of the equipment is guaranteed.

The invention discloses a gravity inertial bag type composite dust remover, comprising at least a dust collector box. Each dust collector box is divided into at least two columns of independent filter chamber, each column of filter chamber comprises a gravity inertia pre-dedusting chamber with an air inlet and a filter bag filter chamber; each column of the filter chamber is divided by board hanging with a filter bag into an upper clean gas chamber, and a lower flue gas chamber communicated with the gravity inertial pre-dedusting chamber; the upper clean gas chamber is provided with a low pressure pulse blowing mechanism; the gravity inertial dedust chamber is provided with a flue gas pre-dedusting allocation mechanism; all gravity inertial pre-dedusting chambers are communicated with a smoke inlet pipe provided with an inlet baffle door; the smoke inlet pipe is provided inside with a flue gas cooling mechanism; the smoke inlet pipe at the inlet of the gravity inertial pre-dedusting chamber is equipped with a three-dimensional smoke distribution mechanism; each upper clean gas chamber is respectively communicated with a smoke outlet branch pipe provided with outlet baffle door; and all smoke outlet branch pipes are communicated with all the smoke outlet header pipe. The filter bag provided by invention has the advantage of long service life.

The invention provides a cyclone melting furnace which comprises a furnace body and a fuel inlet, wherein the fuel inlet is tangentially arranged in the furnace body and is configured to introduce reaction fuel; and the furnace body is also provided with a guide gas inlet, and the guide gas inlet is arranged on a target area part, directly impacted by the reaction fuel, in the furnace body. According to the cyclone melting furnace, the reaction strength of the oxygen-enriched air and coke particles in high-temperature solid-containing gas is enhanced through arrangement of the guide gas inlet.

The invention discloses a filter bag for flue gas treatment of a coke oven coal-charging vehicle, which includes an outer bag body, an inner bag body and a skeleton. There is an air outlet connected to the secondary air channel, and a cylinder is installed between the bottom of the inner bag and the bottom of the outer bag. The open end of the cylinder communicates with the inside of the inner bag, and openings There is an air hole communicating with the secondary air flow channel, the slider is slidably arranged in the barrel, and a spring is installed at the bottom of the slider. The stress generated by the second expansion of the outer bag is much greater than the stress generated by the first expansion, that is, the dust attached to the outer bag is completely ejected. Compared with the single-layer dust bag, the dust removal efficiency is greatly improved. , and the expansion of the outer bag is driven by the expansion of the inner bag, which reduces the direct erosion of the outer bag by the air flow, thereby reducing the loss of the outer bag.

The invention discloses a dry dust removal filter bag for a coke oven. The dry dust removal filter bag, which comprises an outer bag body, an inner bag body and a skeleton, wherein a secondary air flow path is annularly arranged between the outer bag body and the inner bag body, and an air outlet connected with the secondary air flow path is formed in the upper end of the outer bag body; a barrel is arranged between the bottom of the inner bag body and the bottom of the outer bag body, and the open end of the barrel is communicated with the inside of the inner bag body; pores communicated with the secondary air flow path are formed in the two side walls of the barrel, and a sliding block is arranged in the barrel in a sliding way; a spring is arranged at the bottom of the sliding block. The acting stress generated by secondary expansion of the outer bag body is much larger than the acting stress generated by primary expansion thereof, i.e., dust attached to the outer bag body is completely ejected; compared with a dust removal cloth bag with a single-layer structure, the dust removal efficiency is greatly improved, and the expansion of the outer bag body is driven by the expansion of the inner bag body, so that the direct sweeping of air flow on the outer bag body is reduced, and thus the loss of the outer bag body is reduced.

The invention relates to an axial-flow type pressure reduction assembly and an axial-flow type gradual change pressure reduction valve internal part structure. A valve element hole is formed in the middle of the assembly, a drainage groove is formed in the lower portion of the center of the assembly and communicated with the valve element hole, pressure reduction holes and pressure reduction grooves are sequentially formed in the upper portion of the drainage groove at intervals, and a liquid outlet is formed in the upper portion of the assembly and communicated with the pressure reduction hole or the pressure reduction groove in the uppermost layer. The axial-flow type pressure reduction assembly and the axial-flow type gradual change pressure reduction valve internal part structure have the advantages of effectively reducing pressure, preventing cavitation corrosion, reducing valve noise, reducing vibration, being convenient, reliable, easy to maintain, long in service life and the like, and are suitable for a special high-pressure-difference process control process. The axial-flow type pressure reduction assembly and the axial-flow type gradual change pressure reduction valve internal part structure are convenient to disassemble, assemble and maintain, a special disassembly tool does not need to be designed, a special pneumatic or hydraulic auxiliary tool does not need to be provided for disassembly and assembly of the axial-flow type pressure reduction assembly, meanwhile, compared with complex labyrinth flow channel machining, the pressure reduction holes distributed in the axial direction can be achieved only through simple turning and drilling, a machining center is not needed, the machining cost is low, the equipment utilization rate is high, and the harsh delivery cycle can be met.

The invention discloses a split type self-protection sealing surface structure of a regulating valve. The structure comprises a valve rod, a sleeve, a valve core, a valve seat, a valve cover and a valve body, wherein the valve core is arranged in the valve body, the lower end of the valve rod penetrate through the valve cover so as to extend into the valve body and be connected with the valve core, a valve core protection device is arranged on the outer side of the valve core, and the sleeve is arranged on the outer side of the valve core protection device. The structure is characterized in that the upper end of the valve core protection device is connected with the valve cover through a spring, and the inner space height of the valve core protection device is larger than the height of thevalve core. According to the split type self-protection sealing surface structure of the regulating valve, the direct flushing effect of an medium on the sealing surface of the valve core is reduced,erosion and abrasion of the medium to the sealing surface are effectively reduced, the repairing or replacement frequency for the sealing surface of the valve core is reduced, the service period is prolonged, and the maintenance cost is also reduced economically.

The invention discloses a refractory masonry structure of a ring cold machine feed hopper. The refractory masonry structure comprises a feed hopper, the bottom of an inner cavity of the feed hopper isfixedly connected with an air cooling wall, the top of the air cooling wall is fixedly connected with a second anchoring nail through a steel plate, the surface of the second anchoring nail is sleeved with a steel fiber corundum castable, and a heat-resistant and wear-resistant stainless steel plate is arranged at the top of the steel fiber corundum castable. The second anchoring nail is welded to the upper portion of the air cooling wall of the inner cavity of the feed hopper, firmness is guaranteed through continuous welding, the first anchoring nails are welded to the bottom of the heat-resisting and wear-resisting stainless steel plate, and the firmness is guaranteed through continuous welding; the formwork is erected before construction, and the formwork guarantees that castable is inclined by at least 30 degrees; the heat-resisting and wear-resisting stainless steel plate is buckled on the steel fiber corundum castable in a pressing mode, the heat-resisting and wear-resisting stainless steel plate and the steel fiber corundum castable form a combined structure, materials fall onto the heat-resisting and wear-resisting stainless steel plate which is obliquely arranged, scouring of the materials is weakened, and the wear-resisting performance is improved.

The invention relates to an elbow connecting pipe which comprises a straight pipe (5). The elbow connecting pipe is characterized in that one end of the straight pipe (5) is provided with a first flange (1), the other end of the straight pipe (5) is an arc sealing end (22), a bent pipe (3) which is arranged perpendicular to the straight pipe and is communicated with the straight pipe is arranged on the pipe wall in the middle of the straight pipe (5), a second flange (4) is arranged on the end portion of the bent pipe (3), and a rubber connecting pipe (5) is connected on the second flange of the end portion of the bent pipe (3). The elbow connecting pipe has the advantages that the diameter of the straight pipe is larger than that of the straight pipe flange, so that flow speed of water thick liquid is slowed, the top portion of a buffer pipe is in an arc shape, erosion resistance is strong, direct erosion on a pipeline elbow by water thick liquid materials is lowered, the service life of the pipeline elbow is prolonged, the rubber connecting pipe and the flanges are added, and maintaining and replacing of the elbow are convenient.