35results about How to "Easy to form holes" patented technology

The invention provides a method for preparing activated carbon and furfural by taking corncob as a raw material. The method for preparing the activated carbon and furfural by taking the corncob as the raw material comprises the following steps: 1) smashing the corncob until particle size is 15-20mm; 2) mixing the corncob with sulphuric acid solution; 3) carrying out steam stripping and hydrolysis, namely enabling steam to be contacted with the corncob for carrying out hydrolysis; 4) collecting gas during steam stripping, hydrolysis and pressure deslagging, condensing, and distilling, so as to obtain a furfural product; 5) impregnating furfural residue, namely mixing KOH solution with the furfural residue, and impregnating at room temperature; 6) drying to a free-water-less state; and 7) directly activating, namely activating the dried furfural in two stages. The method provided by the invention has the advantages that the corncob is taken as the raw material for cooperatively producing furfural and activated carbon products, so that economic benefit of furfural production can be greatly improved; high hydrolysis temperature and short hydrolysis time are adopted, so that furfural condensation is avoided during production, and yield of furfural is increased; and the furfural residue is adopted for preparing the activated carbon, so that waste residue in a furfural production process can be effectively utilized, and environmental pollution is reduced.

The invention relates to a preparation technique for heavy hollow ingots of all levels between 50 tons to 300 tons, in particular to a manufacturing method for heavy hollow ingots with a movable coreand low segregation. The manufacturing method is applicable to the preparation process of all heavy hollow ingots cast by adopting movable cores, including the casting of the hollow ingots of variousshapes, specifications and materials; besides utilizing simulation means of computers to reasonably design a mould and a casting system for ingots, the manufacturing method mainly adopts a pore-forming technology with a movable core, an intensive cooling technology for various media at different stages, a movable core protection technology, a technology for controlling the flow of a cooling mediumand the temperature of the movable core, an atomizing device for the cooling medium, an early electro slag protection and argon protection technology for molten metal and a technology for protectingthe chassis from big temperature variation, thereby guaranteeing the purity of the molten metal and the operability and the stability of the casting technique, mitigating the segregation, controllingthe segregation position, locating the segregation band of the hollow ingots in the middle position and increasing the utilization rate and the application range of the hollow ingots.

The invention relates to a supersonic wave technology-based hollow fiber film preparation method. The preparation method comprises the following steps of S1, dissolving a polymer resin, a hydrophilc agent, a thickener, an additive and a nonsolvent in a solvent to obtain a spinning stoste, S2, carrying out deaeration treatment on the spinning stoste to obtain a spinning material liquid, S3, pressing the spinning material liquid into a spinning jet, carrying out spraying, carrying out 20-200mm air bath treatment, and stepwise feeding the sprayed materials into all levels of ultrasonic coagulation bathes for curing molding of a primary hollow fiber film, S4, treating the primary hollow fiber film by a washing tank, carrying out glycerin hole-retaining treatment, and winding the primary hollow fiber film on a wire winding wheel, and S5, cutting off the primary hollow fiber film on the wire winding wheel, tidily binding the primary hollow fiber film, putting it into a drying room and carrying out drying. The invention provides the supersonic wave technology-based hollow fiber film preparation method. The supersonic wave technology-based hollow fiber film preparation method improves hollow fiber film pore-forming efficiency, shortens spinning time and improves generation efficiency.

The invention provides a hole-forming and deploying device for a water content sensor of a gravel soil slope, which includes a hole-forming mechanism and a deploying mechanism. The hole-forming and distributing device for the water content sensor of the crushed stone soil slope provided by the invention has a simple structure and is convenient to use, and can realize rapid forming of the hole body of the soil-rock mixture slope. The present invention also provides a hole forming method, which is easy to operate, can realize accurate and efficient deployment of monitoring sensors, and avoids the influence of auxiliary devices on the detection accuracy of sensors.

The invention discloses a cast-in-place pile sleeve tube and a construction method of the cast-in-place pile sleeve tube. The cast-in-place pile sleeve tube comprises a first tube body, a second tube body, a plurality of valve pieces and a rope body, wherein the first tube body is hollow, openings are formed in the two ends of the first tube body, the second tube body is sleeved with the first tube body, the valve pieces are in rotatable linkage at the lower end of the second tube body, one end of the rope body is in movable linkage to the valve pieces, and the other end of the rope body extends out of the upper end of the second tube body. The construction method comprises the steps of cleaning a place, injecting the cast-in-place pile sleeve tube, closing the valve pieces through the rope body, pulling out the second tube body, placing a reinforcement cage, pouring concrete, pulling out of the first tube body and the like. According to the cast-in-place pile sleeve tube and the construction method, the soil compaction effect of a traditional cast-in-place pile can be greatly reduced, and damage caused by the soil compaction effect is reduced. Meanwhile, due to the fact that the cast-in-place pile is a soil-taking pile, the cast-in-place pile sleeve tube has the advantages that the pile sinking resistance is small, and holes are easily formed.

The invention relates to a construction method for a pile foundation of an ultra-thick backfilling layer. The construction method comprises the following steps that a foundation pit for embedding of a steel pipe protective cylinder is excavated in the ultra-thick backfilling layer through a machine, and the depth of the foundation pit is more than five meters; backfilling materials contain block stone with the particle size being larger than 500 mm, and the thickness of the backfilling layer is 11 m or above; the bottom of the foundation pit is filled with a clay layer, then the steel pipe protective cylinder is arranged in the foundation pit in the vertical direction, the thickness of the clay layer is larger than 500 mm; the top end of the backfilled steel pipe protective cylinder is exposed out of the ground; clay and water are stirred to prepare slurry, and the proportion of the slurry is larger than 1.35; the prepared slurry is poured into the steel pipe protective cylinder, and the steep pipe protective cylinder is fully filled with the slurry; and the backfilling layer in the steel pipe protective cylinder is hammered through a hammering pile, and thus a hole is formed in a slurry protective wall. According to the construction method for the pile foundation of the ultra-thick backfilling layer, the hole forming quality of the pile foundation of the ultra-thick backfilling layer can be improved, hole forming of the pile foundation of the ultra-thick backfilling layer is more convenient, more efficient and rapider, accordingly the construction period can be shortened, and the construction cost is reduced.

The invention discloses a building foundation construction device, which comprises a base plate, supports are fixedly connected to both sides of the base plate, a hydraulic rod is arranged on the support, a fixing seat is arranged at the bottom of the hydraulic rod, and slide grooves are provided on the sides of the fixing seat , the inner cavity of the chute is provided with a slider, one side of the slider is provided with a bearing plate, the bottom of the bearing plate is provided with a first perforated pile, one side of the two bearing plates is provided with a slide bar, and two A bending rod is arranged between the sliding rods, a spring is arranged on one side inner wall of the sliding chamber of the bending rod, an extruding block is arranged on the spring, and a second perforated pile is arranged at the bottom of the fixing seat. The present invention utilizes the cooperation of the fixing seat, the chute, the sliding block, the connecting rod and the bearing plate to facilitate the control of the relative distance between the four first perforated piles, and utilizes the cooperation of the sliding rod, the bending rod, the spring and the extruding block , to facilitate the synchronous sliding of the four first perforated piles, improve the accuracy of the spacing, and use the cooperation of the second perforated piles and the fixing seat to socket the second perforated piles with different apertures.