44results about How to "Reduce settlement" patented technology

This invention discloses a thickener with a sealing mechanism, relating to the field of thickener technology. The invention includes a thickener body, a rotating shaft, a rake frame, and a movable box. The mixing mechanism includes a mixing rod with a spiral blade fixed to it, and a sealing mechanism also fixed to the mixing rod. A shifting mechanism is slidably disposed on the outer circumference of the rotating shaft. The rotating shaft drives the movable box to rotate, thereby causing the friction wheel to drive the mixing rod and spiral blade to rotate and mix the slurry, ensuring thorough mixing of the flocculant and slurry. The rotating shaft drives the dispersion disc to rotate, which can disperse the slurry to various positions within the thickener body, ensuring the flocculant is also evenly distributed within the thickener body. The shifting mechanism causes the dispersion disc to rise, reducing the opening of the discharge tank and thus decreasing the discharge speed. The movable box moves downwards, making the mixing rod parallel to the bottom of the thickener body. At this time, the rotating spiral blade stirs up the mud layer at the bottom of the thickener body, reducing the resistance on the rake frame and preventing deformation or jamming of the rake frame.

The present application relates to the technical field of concrete, and particularly relates to a method for preparing foam concrete by using carbon dioxide foam, which comprises the following steps: preparing super-stable carbon dioxide foam: uniformly dispersing nanoparticles in water to prepare a nanoparticle suspension; adding a surfactant to the nanoparticle suspension and uniformly stirring to prepare a nanoparticle foaming agent; sucking the nanoparticle foaming agent by a foaming machine, and introducing carbon dioxide to prepare stable carbon dioxide foam; uniformly stirring water and a water reducing agent in cement to obtain a cement slurry, introducing carbon dioxide gas into the cement slurry to obtain carbonated cement slurry; adding a foam stabilizer to the carbonated cement slurry and the prepared carbon dioxide foam, and continuously stirring until the carbon dioxide foam is completely introduced into the cement slurry. The foam concrete prepared by the method has a density which is at least one third lower than that of the existing method under the condition of unchanged strength, so that the application scenarios of the foam concrete are increased.

This invention relates to the field of carbon nanotube technology, specifically disclosing a high-viscosity carbon nanotube conductive paste and its preparation method. The raw materials for this high-viscosity carbon nanotube conductive paste include ultra-long single-walled carbon nanotubes, short-cut multi-walled carbon nanotubes, conductive carbon black, carboxyl-terminated hyperbranched polyester-polyethylene glycol block copolymer, polyacrylic acid, fluorinated silane coupling agent, γ-butyrolactone, and N-methylpyrrolidone. The high-viscosity carbon nanotube conductive paste provided by this invention achieves uniform dispersion, low volume resistivity, excellent anti-settling properties, and good coating processability of the carbon nanotube conductive paste under high solids content through the synergistic effect of the carboxyl-terminated hyperbranched polyester-polyethylene glycol block copolymer, the fluorinated silane coupling agent, and polyacrylic acid, combined with multi-stage grinding and high-pressure homogenization processes.

This invention discloses a gravity-type bridge abutment anti-settlement and cracking reinforcement device and its processing method, belonging to the field of bridge construction technology. The device includes a bridge abutment body and a bridge deck erected on the bridge abutment body. The bridge abutment body includes a base platform and several sub-platforms sequentially spliced ​​on the base platform along the vertical direction. A guide rod seat is provided on the vertical panel. A rack is connected to a guide rod through a connecting rod. The guide rod slides vertically through the guide rod seat and connects to a support, which is fixed on the base platform. After the base platform settles, the base platform can drive the rack to move vertically downward through the guide rod. After the rack moves, it drives the gear to rotate, thereby driving the inclined panel to rotate towards the side away from the bridge abutment body. A pre-tension force is applied to the bridge abutment body through anchor rods. In addition to reinforcing the bridge abutment by pouring concrete ring beams, this invention also excavates auxiliary pits in the ground, drills holes to install prestressed tie anchor cables, and simultaneously injects grout at the bottom of the bridge abutment to reinforce the bridge abutment, prevent cracking, and reduce bridge abutment settlement.

This application relates to the field of wastewater treatment plant construction technology, and more particularly to a drainage outlet structure for green spaces in urban wastewater treatment plant construction. The structure includes a structural wall, a recessed green space, and drainage components. The structural wall is located on one side of the recessed green space, and multiple drainage components are installed along the central axis of the recessed green space. The filling section of the recessed green space has a first stabilizing component and a second stabilizing component. One end of the drainage component extends into the second stabilizing component and connects to the water-flowing component, while the other end extends out and is surrounded by reinforcing components. The drainage component includes drainage and filtration components. The drainage component has a soil-stabilizing section in the middle, a bend, and a supporting component and a foundation section at the bend. The second stabilizing component includes a planting section and a filling section. The planting section can be planted with vegetation. This application achieves the technical effects of effective drainage, filtration of debris, structural stabilization, and support for drainage components, and can meet the drainage needs of green spaces in urban wastewater treatment plant construction.

The utility model discloses a pump station high-bearing-capacity foundation structure, and belongs to the technical field of pump station foundations, the pump station high-bearing-capacity foundation structure comprises a concrete layer, a ground and prestressed pipe piles, the ground is located on the surface of the concrete layer, a plurality of prestressed pipe piles are pre-buried in the concrete layer, and each prestressed pipe pile comprises a first pipe pile section, a second pipe pile section and a welding point; each first section of pipe pile and each second section of pipe pile are welded through a welding point; the design is novel, the device is ingenious, the prestressed pipe pile foundation is arranged, due to the fact that a current pump station foundation soil is low in bearing capacity and cannot meet the design requirement, the prestressed pipe pile foundation needs to be adopted for treatment so as to improve the bearing capacity of the foundation soil, and the prestressed pipe pile foundation technology is an effective foundation treatment method; and the foundation bearing capacity can be improved, settlement is reduced, the structural stability is improved, important practical significance is achieved through research and development of the technology for improving the foundation soil bearing capacity of the prestressed pipe pile foundation, and the practicability of the device is greatly improved.

The utility model provides a kind of hydraulic engineering geological survey sampling device, it is related to hydrogeological engineering survey technical field, including cylinder, by coaxial setting upper sampling cavity, middle sampling cavity and lower sampling cavity constitute three-dimensional sampling space;Negative pressure source, it is communicated to each sampling cavity, directional negative pressure is formed when sampling.The utility model can realize high-precision stratified sampling without cross-contamination, by orthogonal distribution upper, middle and lower water inlet channel, make the water body of different depth in geological survey stationary surface water along independent path into corresponding sampling cavity, completely avoid interlayer mixing from physical structure, ensure stratified data authenticity;The utility model can optimize fluid flow, guarantee sample integrity and representativeness, the horn-shaped water inlet of anti-turbulence cover reduces flow velocity, combined with spiral guide flow channel, convert turbulent flow into stable laminar flow, reduce bubble disturbance and particulate matter settlement, significantly improve the originality of sample, meet high-precision water quality analysis demand.

The application discloses a sewage drain well with anti-settling structures and a construction method, which comprises a well body, a well cover, a well seat and a base, the well seat comprises an upper well seat and a lower well seat, the well cover is detachably connected with the upper well seat, a plurality of air holes are formed in the well cover in the circumferential direction, the base comprises an upper base and a lower base, a sewage pipe is arranged between the upper base and the lower base, the upper and lower ends of the well body are connected with the lower well seat and the upper base respectively, the well body is provided with a plurality of anti-settling structures, a plurality of cavities for placing the anti-settling structures are formed in the well body, the anti-settling structures are arranged in the corresponding cavities respectively, the well body is provided with driving members corresponding to the anti-settling structures, and the anti-settling structures are driven by the corresponding driving members. The application has the effects of increasing the anti-settling structures and slowing down the settlement of the well cover and the well body.

The invention discloses a method for constructing an enclosure structure by adopting a hole pile method under a limited ground condition, which comprises the following steps of: constructing ground enclosure piles on the ground, arranging the ground enclosure piles along a first open excavation section and a second open excavation section, then constructing the first open excavation section and the second open excavation section, then constructing a pipe curtain support beam below a running track, and then constructing a pipe curtain, excavation is conducted from the first open excavation section and the second open excavation section to the direction, so that an underground excavation section is excavated, in-hole fender posts are constructed along the edge of the underground excavation section, in-hole piles are constructed at multiple positions of the ground of the underground excavation section, and steel pipe stand column piles are installed on the in-hole piles; and finally, a pile top beam is constructed on the steel pipe stand column pile, and a cover plate is installed on the pile top beam. According to the construction method, the ground fender posts are constructed firstly, then the in-hole fender posts are constructed when the underground excavation section is constructed, and the in-hole fender posts are connected with the ground fender posts to form a closed fender post structure, so that the safety of subsequent construction is guaranteed, the stability of a soil layer around the subway station is guaranteed, and meanwhile, the construction efficiency is guaranteed.

The utility model discloses an anchor rod static pressure pile pressing force locking structure which comprises an anchor rod static pressure pile and anchor rods pre-buried in a bearing foundation around an anchor rod static pressure pile hole, the anchor rods are symmetrically distributed with the anchor rod static pressure pile hole as the center, and the top of each anchor rod is sleeved with a first counter-force frame and a second counter-force frame which are arranged in parallel. The sides, deviating from the anchor rod static pressure pile, of the first reaction frame and the second reaction frame are jacked and limited through a fastening nut mounted on the anchor rod; the bottom of the first reaction frame abuts against the top of the anchor rod static pressure pile, a hydraulic jack is placed on the top of the first reaction frame, and the top of the hydraulic jack abuts against the bottom of the second reaction frame. According to the structure, the pile pressing force is permanently locked in the building foundation through the synergistic effect of the counter-force frame and the pile sealing concrete, an active reinforcing measure is adopted, and the effect of permanently reinforcing the foundation can be achieved.

The invention relates to the technical field of fluidized bed heat exchange, in particular to a solid-liquid mixture circulating method, a solid-liquid mixture circulating device and a fluidized bed heat exchange system. The solid-liquid mixture circulating method comprises the following steps: S1, stirring a solid-liquid mixture; and S2, the solid-liquid mixture is driven to circulate in the fluidized bed heat exchange system, so that the solid-liquid mixture outside a shell-and-tube heat exchanger of the fluidized bed heat exchange system flows into the shell-and-tube heat exchanger, and the solid-liquid mixture in the shell-and-tube heat exchanger flows out of the shell-and-tube heat exchanger. According to the invention, after the solid-liquid mixture is stirred, solid particles can be uniformly distributed in the liquid, and sedimentation and aggregation of the solid particles are reduced; and after the solid particles are uniformly distributed in the liquid, the solid-liquid mixture is driven to circulate in the fluidized bed heat exchange system, so that the solid particles can also circulate continuously.

This utility model discloses an immersion plating solution supply device, comprising: a transfer container for temporarily storing the immersion plating solution; a stirring motor and a liquid inlet located at the top of the transfer container; a stirring shaft located in the transfer container and driven by the stirring motor; a stirring rod located in the transfer container and driven by the stirring shaft; an ultrasonic transducer located at the bottom of the transfer container; a supply pipe externally connected to the bottom of the side wall of the transfer container for conveying the immersion plating solution to the immersion plating treatment container; and a supply valve and a supply pump located on the supply pipe. This immersion plating solution supply device can pre-stir and ultrasonically treat the immersion plating solution before adding it from the packaging container to the immersion plating treatment container, thereby eliminating or significantly reducing agglomeration and sedimentation of the immersion plating solution. Furthermore, when performing batch immersion plating treatment on aluminum tube substrates, it can avoid or significantly reduce adverse consequences caused by fluctuations in the quality of the immersion plating solution, ultimately improving product yield and reducing production costs.

The utility model provides a kind of for the reboiling device of centrifugal mother liquor rectification of containing material, including rectifying column, several reboilers, circulating pump and external heater;The top of each reboiler is equipped with gas phase export, and gas phase export is linked with rectifying column, and the top of each reboiler is equipped with mother liquor import, and mother liquor import is linked with the bottom discharge port of rectifying column;Circulating pump is used to pump out liquid material in reboiler;The import of external heater is linked with the export of circulating pump, and the export of external heater is linked with reboiler.Circulating flow heating is driven by circulating pump between reboiler and external heater, and solid material is rapidly passed through external heater using the flow rate of material liquid, avoid solid material to settle and wall in external heater.

The invention discloses an active supporting structure for a shallow-buried tunnel portal pipe shed, relates to the field of tunnels, and aims to improve the rigidity and stability of the supporting structure through active stress of the pipe shed. According to the technical scheme, the active supporting structure for the shallow-buried tunnel portal pipe shed comprises a guide wall at the portal, a supporting pipe is inserted into the guide wall, the front end of the supporting pipe is inserted into a soil body on the inner side of the guide wall, and the rear end of the supporting pipe is located on the outer side of the guide wall; at least one connecting hole is formed between the earth surface above the supporting pipe and the supporting pipe, an anchoring plate is arranged at the opening position of the connecting hole, a tie bar is arranged in the connecting hole, the upper end of the tie bar is connected to the anchoring plate, and the lower end of the tie bar is connected with the supporting pipe. The tie bars apply upward force to the supporting pipes before the tunnel portal is excavated, namely, the tie bars are of a prestressed structure and can offset part of soil mass load, deformation and sedimentation of the soil mass after the tunnel portal is excavated are reduced, and the risk that a primary support occupies a permanent structural plane is reduced.

The invention discloses kaolin-graphene composite aqueous slurry and a preparation method thereof. The preparation method comprises the following steps: S1, proportioning and mixing: mixing kaolin and amorphous carbon powder to obtain a solid mixture; s2, conductive networking and forming: adding a conductive auxiliary agent into the solid mixture obtained in the step S1, uniformly mixing, and then tabletting or granulating the mixture to obtain a to-be-treated blank; s3, ultrafast carbon heat treatment: carrying out ultrafast carbon heat treatment on two ends of the to-be-treated blank obtained in the step S2 in a negative pressure environment to obtain a composite filler; and S4, wet dispersion pulping: adding the composite filler obtained in the step S3 into a water-phase dispersion medium, and carrying out high-speed shearing dispersion, so as to obtain the kaolin-graphene composite water-based slurry. The waterborne epoxy anticorrosive coating has the advantages that stable dispersion and constructability can be realized in a waterborne system, and a multi-scale layered shielding network is constructed in a coating film, so that the barrier property and durability of the waterborne epoxy anticorrosive coating are improved.

The invention relates to the technical field of coal mine construction, and discloses a protection device for coal seam extraction, which is characterized in that the protection device is arranged on the inner side of the bending part of the L-shaped pipe, and the filtering part comprises a gear ring rotationally connected in the L-shaped pipe and a filter screen fixedly connected to the inner ring of the gear ring and used for intercepting solid particles; the stirring rods are fixedly connected to the outer ring surface of the gear ring at equal intervals and face the incoming flow direction of fluid. Through the arrangement of the L-shaped pipe and the scraping plates, when fluid is input, the flow speed of the fluid is effectively reduced, meanwhile, guiding flowing of the fluid is provided, a better sedimentation environment is provided for the fluid, gas density is low, and gas floats upwards, meanwhile, when the filter screen rotates, the low-position scraping plate generates a scraping effect on the filter screen, and the high-position scraping plate generates effective deformation on the filter screen; and the particles attached in the holes can further fall off, and the fallen particles always fall to an upstream large-particle-size area, so that the degree of abrasion of coarse coal to a subsequent conveying pump body is reduced while effective separation is realized.

The utility model relates to a mining area ecological restoration and foundation treatment structure based on microbial mineralization. The mining area ecological restoration and foundation treatment structure comprises a microbial macadam three-dimensional reinforcing structure of a middle-shallow layer, a microbial solution and a reaction solution are injected through a pre-buried grouting floral tube, calcium carbonate precipitates are generated and cemented with macadam to form a three-dimensional reinforcing layer, water is rapidly drained, and the bearing capacity of a foundation is improved; the deep layer is sealed by three layers of polyvinyl chloride films, and is combined with a horizontal drainage cushion layer and a drainage plate to form a vacuum combined surcharge preloading system to accelerate drainage of water in the deep layer; the backfill soil is formed by mixing mine tail mud with external soil, and recycling of the tail mud is achieved through layered paving and rolling; the disc pit tunnel is formed by spiral cutting along the mine pit wall, kerbs and stand columns are reserved to guarantee passing safety, and cut stones are recycled. And a horizontal / vertical observation marker post is used for monitoring the displacement and settlement of the foundation. The utility model solves the problems of tail mud stockpiling, low construction efficiency and low foundation stability, and has the advantages of environmental protection, economy and high efficiency.

The present application relates to the technical field of bed riprap leveling, and particularly relates to a floating type leveling ship for leveling layer riprap and a leveling process for covering sea area; the leveling ship is used to form a leveling layer by riprap on a bottom block stone layer; the height of a scraping head at the bottom of a riprap pipe is adjusted to be the height of the leveling layer, so that the height of the scraping head is the thickness of the leveling layer; the stone in the riprap pipe is maintained at a set height; a trolley on the leveling ship is started, and moves along a track at a set speed; the riprap pipe vibrates up and down in synchronization with the movement of the trolley; the stone in the riprap pipe falls from the scraping head onto the bottom block stone layer; the scraping head scrapes and vibrates the stone on the bottom block stone layer until the trolley moves to the other end of the track, and the first ship position is completed; the scraping head realizes synchronous construction of riprap and scraping, improves the operation efficiency, reduces the number of ships on site, and reduces the construction cost.

The present application relates to a kind of lime-soil compaction pile construction system for collapsible loess area, before construction, good technology, material, equipment and site preparation, such as familiar drawing, prepare soil and lime, debug hole and ramming equipment, level site and surveying and setting out etc..During construction, first carry out test pile to determine parameters, large-scale hole formation follows specific sequence and strictly controls pile diameter, perpendicularity etc.;Pile formation first clean bottom ram, then layered packing ramming, accurate operation by control system;After pile formation, do well maintenance.Quality detection uses low-strain dynamic penetration method to detect pile integrity, plate load test to detect composite foundation bearing capacity.The method is applied to a certain commercial complex project, construction is smooth, hole formation and pile formation quality meet the standards, efficiency is improved, construction period is shortened.

This invention provides a bridge pier foundation pit filling structure and construction method using L-shaped foamed concrete blocks, belonging to the field of road and bridge engineering construction technology. It includes: a foundation pit, at least one pile foundation, a pile cap, a bridge pier, and a filling structure; at least one pile foundation is located within the foundation pit; the bottom surface of the pile cap is connected to the top surface of the pile foundation; the bridge pier is connected to the top surface of the pile cap; this device fills the foundation pit by using an interlocking, layered, and overlapping method to fill the pit with L-shaped foamed concrete blocks, combined with a method of filling joints with cast-in-place foamed concrete. This strengthens the strength and integrity of the foundation pit filling material between the pile cap group and the bridge pier group, and utilizes the properties of foamed concrete to reduce the pressure of the backfill soil in the foundation pit, thus reducing the problems of bridge pier settlement and uneven settlement between bridge pier groups.

The utility model discloses a double-layer foundation shallow layer solidification structure, and relates to the technical field of foundation treatment. Comprising a foundation pit, the foundation pit further comprises a lower curing layer and an upper curing layer, a bonding interface layer is arranged between the lower curing layer and the upper curing layer, a soft soil layer is arranged at the bottom of the foundation pit, a plurality of piles are embedded in the foundation pit, and the piles are vertically and horizontally arranged and embedded in the soft soil layer. The lower curing layer is located above the soft soil layer, and the upper curing layer is located above the lower curing layer; a synergistic stress system is formed through the double-layer foundation with the high-strength impermeability of the upper curing layer and the flexible bearing of the lower curing layer, the bearing capacity and stability of the foundation are effectively improved, sedimentation is reduced, the utilization rate of waste residues is increased, the material cost is effectively reduced, the structure is more environmentally friendly and saves energy, and the structure is particularly suitable for treatment of soft foundations and has good application prospects. Such unfavorable geological conditions as sludge and mucky soil.

The invention discloses an active supporting method for a shallow-buried tunnel portal pipe shed, relates to the field of tunnels, and aims to improve the rigidity and stability of a supporting structure through active stress of the pipe shed. According to the technical scheme, the active supporting method for the shallow-buried tunnel portal pipe shed comprises the steps that a guide wall is constructed at a tunnel portal, a guide hole is reserved in the guide wall, then a supporting pipe is drilled or driven into a soil body on the inner side of the guide wall through the guide hole, and the front end of the supporting pipe is inserted into the soil body on the inner side of the guide wall; the rear end of the supporting pipe is located on the outer side of the guide wall. Connecting holes are constructed in the earth surface of the inner side of the guide wall, tie bars are put into the connecting holes, and the lower ends of the tie bars are connected with the supporting pipes; an anchoring plate is constructed at the orifice position of the connecting hole, and the upper end of the tie bar is tensioned; and finally, the tunnel opening is excavated and supported. The tie bars can counteract part of soil body load, deformation and sedimentation of the soil body after the tunnel portal is excavated are reduced, and the risk that a primary support occupies a permanent structural plane is reduced.

This utility model relates to the field of deep foundation pit construction technology, specifically a grouting device for deep foundation pit construction. It includes a base plate, a storage tank mounted on the base plate, a water pipe connected to the bottom of the storage tank, a water pump connected to one side of the water pipe, and a first screw installed within a fixed frame. This utility model, through the cooperation of the base plate, storage tank, water pipe, water pump, inlet, fixed frame, first screw, first drive motor, moving plate, nozzle, fixed frame, second screw, second drive motor, moving block, first electric telescopic rod, and clamping block, allows the grouting device to grout from the bottom of the deep foundation pit, simultaneously and evenly grouting the interior, ensuring effective reinforcement of the deep foundation pit, enhancing the bearing capacity of the foundation, and increasing the cohesion and shear strength of the foundation soil. This helps reduce foundation deformation and settlement, improving the overall stability of the foundation. In deep foundation pit engineering, the stability of the foundation is directly related to the safety and stability of the project.

The utility model discloses a surveying and mapping support leveling mechanism, which belongs to the technical field of support adjustment, and comprises a support frame, the support frame is fixedly connected with three positioning rods, the outer surfaces of the positioning rods are rotatably connected with support legs, a movable sleeve plate is slidably connected outside the support frame, and three connecting plates are rotatably connected outside the movable sleeve plate. An auxiliary plate is arranged above the supporting legs, and a first adsorption plate and a second adsorption plate are slidably connected to the upper portion of the auxiliary plate. The auxiliary plate, the adjusting structure, the first adsorption plate and the second adsorption plate are arranged, the first bevel gear, the second bevel gear and the third bevel gear are matched, the positions of the first adsorption plate and the second adsorption plate can be adjusted on the surface of the auxiliary plate, and the stress area can be conveniently adjusted according to the actual situation; by adjusting the position of the adsorption plate, the stress area can be increased, the pressure on the ground is reduced, and the stability of the support is enhanced.

This invention relates to the field of geotechnical engineering, specifically to a method for reinforcing calcareous sand based on a biomimetic tortoise-shell pattern geomembrane using layered embedding. This invention combines the biomimetic principles of tortoise-shell structures with modern geosynthetic material technology to construct a scientifically sound integrated "material-structure-process" solution, which is expected to provide a new technical approach for calcareous sand foundation treatment and promote the progress and development of marine geotechnical engineering technology.

The application relates to the field of bridge construction, in particular to an assembly type steel tower assembling jig system, which comprises a plurality of jig bodies for supporting a steel tower, the jig body comprises at least two groups of fixed frames arranged side by side and adjusting frames for adjusting the distance between the fixed frames and the steel tower, a plurality of connecting assemblies for connecting the fixed frames and the adjusting frames are arranged between the adjusting frames and the fixed frames, a supporting frame for connecting the top ends of the plurality of adjusting frames is arranged between the adjusting frames, and the supporting frame is in abutment with the surface of the steel tower through the adjusting frames. The application has the effects of reducing the number of height measurements of the jig, simplifying the adjusting process between the jig and the steel tower, and improving the supporting precision of the jig on the steel tower.

This invention discloses a highly efficient plant protection machine for controlling major pests of cowpeas, belonging to the field of plant protection equipment technology. It includes a housing; the top of the housing is equipped with a blower assembly for blowing off diseased, withered leaves and insect-infested flowers from cowpeas; one end of the housing is equipped with a sweeping assembly for cleaning diseased and withered leaves from furrows and ridges; and the interior of the housing is equipped with a suction and crushing assembly for collecting the diseased and withered leaves after sweeping. In this invention, the blower can blow diseased and withered leaves attached to cowpea plants into furrows and ridges. Because the blower is fixedly connected to a vertical plate by a second spring, it generates a certain vibration amplitude during startup, causing it to swing. When the swinging blower touches the first springs on both sides, a reaction force is generated, causing it to return to its original position. This cyclical change in the blower's angle allows the airflow to cover a wider area of ​​the cowpea plant.

This invention relates to the field of homogenization equipment technology, and discloses a pretreatment device for emulsifying and homogenizing raw materials for dairy beverages. The device includes an emulsification tank and a lid on top of the tank. A bottom rotating rod is inserted into and rotatably mounted on the inner wall of the emulsification tank facing the lid. Four sets of L-shaped scrapers are uniformly fixedly connected along the circumference of the bottom rotating rod facing the inner wall of the emulsification tank. The outer walls of the L-shaped scrapers slide against the inner wall of the emulsification tank. Four sets of central rotating blades are uniformly fixed along the length of the bottom rotating rod facing the outer wall of the L-shaped scrapers. In this invention, during the emulsification and homogenization process, large particles in the system tend to settle to the bottom of the emulsification tank due to gravity, resulting in insufficient emulsification and homogenization of the material at the bottom. The L-shaped scrapers rotate synchronously with the bottom rotating rod, continuously scraping the inner wall and bottom of the emulsification tank, thus re-stirring the settled large particles back into the system.

The application belongs to the technical field of geotechnical engineering construction, and specifically provides a disordered high fill site pre-ramming and humidification and dynamic compaction combined construction method, which comprises the following steps: 1) detecting cracks and cavities in the target site; 2) pre-ramming to eliminate cracks and cavities in the target site; 3) water injection and humidification of the target site after pre-ramming; and 4) dynamic compaction construction of the humidified target site until the requirements are met. The application solves the problems of uneven humidification and poor reinforcement effect in the existing dynamic compaction foundation treatment of disordered high fill soil sites, avoids the problem of uneven water injection and humidification caused by uneven upper and lower strata, and has the characteristics of good treatment effect, fast construction speed and small residual settlement.

This invention relates to the field of railway subgrade construction technology, and discloses a process and method for closed construction of railway subgrade bed, including the following steps: Step 1: Close off and protect the construction section to prevent unauthorized personnel and animals from entering, while simultaneously coordinating with the station, railway operations, signaling, and other units and delivering cooperation notices, and simultaneously repairing ditches and slopes within the construction area; Step 2: Conduct on-site exploration of the subgrade. This invention replaces the expansive soil in the construction section and performs dynamic compaction on the entire section, compacting the cohesive soil and original soil to increase their load-bearing capacity and reduce settlement. Then, the subgrade is subjected to prolonged vibration to further compact the soil, and after laying the ballast, continuous vibration is applied again to reduce and compact the spacing between the ballast sections. This prevents subsidence of the subgrade and ballast caused by vibration after train passage, ensuring the reliability of the subgrade and rails after installation.