84results about How to "Short processing cycle" patented technology

The invention provides a processing method of a thin and long aluminium alloy thin-walled cylinder and belongs to a mechanical processing method of a slewing structure, and the processing method is used for carrying out friction stir welding on a shell blank so as to process and mold the shell blank into a bent generatrix thin-walled cylinder shell. The method provided by the invention can be used for solving the problems of poor shell generatrix displacement, poor shell roundness, uneven wall thickness, clearance at welding seams, unqualified performance detection and incapability of ensuring use requirements in the existing processing method. The method comprises a part manufacturing step, a matching step, a caustic washing step, a trial assembly step, a positioned welding step, a friction stir welding step, a welding seam polishing step, a stress-relief annealing step, an X-ray detection step, a shape processing step, a ultrasonic flaw detection step and an end face hole processingstep. The method provided by the invention can be used for solving the problems of poor shell roundness, uneven wall thickness, clearances at the welding seams and unqualified performance detection in the existing processing method, improving the shell processing precision and reliably ensuring the product quality.

The invention discloses an adjustable angle corner section material system for a curtain wall, which relates to a multi-corner section material system for a curtain wall, in particular to a corner section material system for a glass curtain wall. The section material system comprises a corner column, a corner cross beam, a connecting corner connector, an insulation spacer, a cross beam cover plate, a corner auxiliary frame, a common auxiliary frame, a curtain wall panel, a corner press piece and a side sealing gland. The corner column is used for installing the curtain wall; the connecting corner connector is arranged on one end part of the corner cross beam; the insulation spacer is arranged on the corner column together with the corner cross beam and the connecting corner connector through connecting bolts; the cross beam cover plate is arranged on the corner cross beam; the corner auxiliary frame and the common auxiliary frame adhere to a processed curtain wall panel through silicone structural adhesive; after the silicone structural adhesive is solidified, the common auxiliary frame on a horizontal edge of the curtain wall panel is hung onto the corner cross beam, and the corner auxiliary frame on a vertical edge of the curtain wall panel is arranged on the corner column through the corner press piece and a connecting screw; and after all parts are in position, the side sealing gland is installed to form the adjustable angle corner section material system.

The invention belongs to the technical field of environment protection, and relates to a facility agricultural non-point source pollutant on-site intercepting and absorptive method. By the aid of a triple intercepting and absorptive method of source control, process blocking and intercepting and destination absorption and fixation of facility agricultural pollutants, non-point source pollution sources-flow-convergence processes and water-fertilizer key factors determining forming of non-point source pollution are subjected to process key point control, and on-site reduction of facility agricultural non-point source pollution is achieved by means of reducing consumption of nitrogen and phosphorus, increasing nitrogen and phosphorus absorption, preventing nitrogen and phosphorus loss and recycling nitrogen and phosphorus. By the method, nitrogenous fertilizer input of facility farmlands is decreased by 35%, phosphate fertilizer input is decreased by 22%, chemical pesticide input is decreased by 41.4%, agricultural waste recycling and harmless treatment utilization rate reaches 91.7%, treatment cycle is shorted by 46.2%, nitrogen is reduced on site by 38.45%, and phosphorus is reduced by 25.42%. The method can be widely applied to interception and control of facility agricultural non-point source pollutants.

The invention discloses an automatic accurate adjustment system for an instrument movement clearance. The automatic accurate adjustment system comprises a work table, a handpiece module, an engine base module, a shifting module, a laser displacement sensor module and a controller. The handpiece module comprises a cutter head and a cutter head drive mechanism; the shifting module comprises a shifting plate and a shifting plate drive mechanism; the laser displacement sensor module comprises a probe, a laser displacement sensor and a probe drive mechanism; the signal output end of the laser displacement sensor is connected with the controller; and the control ends of drive elements in the cutter head drive mechanism, the shifting plate drive mechanism and the probe drive mechanism are connected with the controller. A clearance between a lower bearing and a shaft tip in a measurement mechanism of an electrical measuring instrument to be adjusted is detected by using the shifting plate, the probe and the laser displacement sensor, an adjustment quantity is output by using the controller according to a detection signal, and axial displacement is generated by driving the lower bearing through the cutter head, so that the accurate adjustment of the clearance between the lower bearing and the shaft tip is realized. The automatic accurate adjustment system is short in machining period, low in cost and high in efficiency; and moreover, the batch uniformity and the stability of the accuracy can be improved.

The invention relates to a formaldehyde waste gas high efficient membrane absorption technique, pertaining to the technical field of physical absorption or chemical absorption treatment and membrane separation. The ratio of diameter to height of a hollow fiber membrane contactor adopted by the technique is 0.1 to 0.3, the loading density is 0.1 to 0.6, the aperture of a membrane micropore is 0.1 to 0.3 Mum and the porosity is 0.1 to 0.6; formaldehyde in the waste gas is absorbed by adopting absorption liquid water or ammonia spirit with the content of 1 percent to 5 percent to generate the hydrates of the formaldehyde, namely, methylene glycol or hexamethylenetetramine, thus realizing the recycling treatment of the formaldehyde waste gas. The technique combines the traditional physical or chemical absorption treatment method and the high efficient membrane separation technique, can be operated under moderate conditions, namely, at normal temperature and normal pressure, has short treatment period and high treatment efficiency and can completely remove the formaldehyde in the waste gas. The technique can remove not only high-concentration formaldehyde but also low-concentration formaldehyde in the waste gas, with high efficiency, and the absorption liquid obtained during the treatment of the high-concentration formaldehyde waste gas can be further utilized, thereby realizing the recycling treatment of the formaldehyde waste gas.

The invention discloses a hot laminating flocking film used for being pasted on the surface of decorations, which comprises a base film, the upper surface of the base film is fixed with a villosity layer and the lower surface thereof is provided with a laminating layer for laminating with the surface of decorations, the villosity in the villosity layer is polyester fiber and/or polyamid fiber with fibre number of 1.5D or 3-4D, the base film is a PVC, a PP, a hot melt adhesive film or a multilayer complex film with thickness of 0.05-0.5mm, the invention also provides a manufacturing method of the hot laminating flocking film, in the method, the back surface of the base film after flocking is upward and subjected to corona treatment or glue spreading treatment, the hot laminating flocking film prepared by the method can carry out hot lamination with the decoration body between 140 DEG C and 220 DEG C, and has the advantages of simple technology, short process period, low scrappage, firmpasting, without viscosity at normal temperature, no flange forming or falling off.

The invention provides a single-cable structural point supporting type glass curtain wall out-of-plane deformation limiting device which is a safety protection device applicable to a unidirectional single-cable structural point supporting type glass curtain wall project. The single-cable structural point supporting type glass curtain wall out-of-plane deformation limiting device structurally comprises a pre-tightening nut, a locking nut, a spring protecting seat with scales, a spring guide rod, a compression spring and a movable steel claw. The spring protecting seat with scales is welded on a body steel structure or connected with the body steel structure. The movable steel claw is connected with the compression spring, the locking nut and the spring protecting seat through the spring guide rod and limit a glass out-of-plane displacement value through the compression spring. By reading the scale on the spring protecting seat, a working state of the limiting device can be read and monitored at any time, and a pressure value and a deformation value of the compression spring can be intuitively read.

The invention provides a method for removing heavy metals in soil through combination of bioleaching and a Fenton reaction. The method comprises the following steps that (1) polluted soil is mixed into a soil solution with water; (2) ferrous salt is added into the soil solution, an acidophilic thiobacilli bacterium solution is inoculated, and bioleaching is carried out; and (3) an H2O2 solution is added to conduct the Fenton reaction. Through combination of bioleaching and the Fenton reaction, the heavy metals in the soil can be effectively removed, and the treatment effect is remarkably better than the treatment effect obtained through H2SO4 acidification and the Fenton reaction; and meanwhile, the soil restoration cycle can be remarkably shortened, and the method is a heavy metal polluted soil restoration technology having wide application prospects.

The invention discloses a petrochemical engineering waste separating processing method. The petrochemical engineering waste separating processing method comprises the following steps of: adding petrochemical engineering waste and water into a processor based on a weight ratio of 1: 0.5 to 1.5; heating to reach 60 to 95 DEG C; adding 0.3 to 1.2% of cracking agent to the processor based on weight of the petrochemical engineering waste; fully agitating to obtain oil, the water and impurity; and standing and precipitating so as to completely separate the oil, the water and the impurity. With the adoption of the petrochemical engineering waste separating processing method disclosed by the invention, so that the petrochemical engineering waste can be effectively processed, impurities such as sand and stones, soil, metal filing and surface active agents can be completely separated from the oil; the oil can be recycled, wastewater can be recycled, and processed impurity can be used as fuel, waterproof materials, snow melting agents, cement additives or buried after reaching a standard, therefore, harmless resource comprehensive utilization of the petrochemical engineering waste can be achieved, a good processing effect can be achieved, a short processing period can be ensured, no secondary pollution occurred in a processing procedure, and processing is carried out with low cost.

The invention discloses a software incremental upgrade method, device and operation support system. When the software is changed, at least one data unit that has been updated is extracted, and the data unit is combined into an updated data set. When the updated data set When the update conditions are met, a corresponding patch upgrade package is generated for the update data set, and the update process is performed according to the patch update package; software changes can be detected quickly, and software products can be updated, and when the software is updated, there is no need to restart Install all the software and directly install the patch upgrade package to complete the update, and solve the impact of code changes on software products in a timely manner; shorten the processing cycle of software updates, improve the efficiency of software updates, and effectively reduce the risk of data updates.

The invention provides a rotary type dryer which is suitable for high moisture materials. The dryer comprises a cylinder body, a driving device and a riding wheel device; a preheating zone, a baking zone and a drying zone are successively divided in an inner cavity of the cylinder body from head to tail; a plurality of lifting blades I rearward inclined with the bus of the cylinder body, a lifting blade II perpendicular to the bus of the cylinder body, a lifting blade III frontward inclined with the bus of the cylinder body and a lifting blade IV rearward inclined with the bus of the cylinder body are respectively arranged on the inner walls of the cylinder bodies of the preheating zone, the front zone and rear zone of the baking zone and the drying zone, and a plurality of the gammadia lifting blades with crisscross brackets are arranged in the cylinder body of the drying zone; a plurality of arch breaking chains, the two ends of which are fixed with the inner wall of the cylinder body, are arranged on the inner wall of the cylinder body. The rotary type dryer has the advantages that the dry processing can be directly performed to the high moisture materials, the equipment investment and the occupied area are effectively reduced, the processing period is shortened, the secondary pollution is avoided, the energy consumption and the operating cost are decreased, the moisture content can be decreased to 3 to 5 percent after the dry processing, and the dry processing effect is good.

The invention relates to a treatment device for crop seeds, which greatly improves the screening efficiency and screening effect of the seeds, and improves a germination rate of the seeds. The top ofa screening cylinder is provided with a charging port, the middle of the screening cylinder is provided with a separating port, and the bottom of the screening cylinder is provided with a returning port and a discharging port; a filter net is arranged between the separating port and the charging port, and the aperture of the filter net is larger than the particle size of the seeds; the separatingport is communicated with a fan by a separating pipe, and the fan is further communicated with a cloth bag; the returning port is closer to the separating port than the discharging port, the discharging port is movably connected to a material baffle plate, and the material baffle plate is driven by a first power device to move horizontally; the bottom of a returning cylinder is communicated with the returning port of the screening cylinder by a first returning pipe, and the top of the returning cylinder is communicated with the charging port of the screening cylinder by a second returning pipe; a feeding screw rod is rotatably connected in a feeding channel in the returning cylinder, and the feeding screw rod can be driven by a second power device to rotate; a mounting rod is connected ina mixing cylinder along the axial direction, blades sleeve the periphery of the mounting rod, and the mounting rod is driven by a third power device to rotate.

The invention discloses a method for removing heavy metals Zn and Cu in dredged river sediment, which comprises the following steps: mixing dredged river sediment and water according to a mass ratio of 1:(2-10) to obtain sediment slurry; acidizing and oxidizing the sediment slurry, performing microwave heating on the obtained reaction product to 60-120 DEG C, and keeping the temperature for 5-10 minutes; after the heating reaction is finished, filtering to obtain sediment slag and a filtrate containing Zn and Cu; and chemically depositing the filtrate, and regulating the pH value to 7.5-8.5, thus obtaining a clear solution and heavy metal slag containing Zn and Cu. The method disclosed by the invention is simple in process, convenient to operate, low in investment and cost, short in treatment period and good in treatment effect, and can realize the reutilization of sediment, thereby having certain economic and social benefits.

The invention provides an automatic velocity spectrum interpretation method based on a model and global optimization, and belongs to the field of oil gas and coal-bed gas seismic exploration and development. The method comprises the following steps: (1) preprocessing original seismic data, namely, a common-shot gather; (2) taking the CMP gather obtained in step (1) as input data, arbitrarily giving a reference velocity as an initial reference velocity, and using the initial reference velocity to carry out NMO correction on the CMP gather; (3) for a time moment t, generating a random number by taking the reference velocity as a seed point, taking the random number as a stacking velocity VrmsO, solving VrmsO to obtain the optimal VrmsO, and solving VrmsO at next time moment until VrmsO of all moments t on the CMP gather is solved; and (4) inputting next CMP gather, and repeating the steps (2) and (3) until VrmsO of all input CMP points is solved.

The invention discloses a solvent sorting and pre-processing method of a waste lithium ion battery. The solvent sorting and pre-processing method comprises the following steps of 1, performing discharging; 2, performing dismantling and cutting; 3, performing solvent sorting; and 4, performing water screening: putting the filtering residue obtained in the step 3 into a screening net, and taking pure water washing as power for screening, wherein the oversize products are aluminum foil and copper foil while the undersize products are positive and negative electrode active materials. The solvent sorting and pre-processing method of the waste lithium ion battery has the characteristics of going green and environmental protection, short treatment period, high separation efficiency and low cost.

A process for purifying recombinant human interferon alpha 16 includes such steps as breaking the engineered bacteria able to express human interferon alpha 16 in buffering Tris-HCl solution, adsorbing on expanding bed by use of anionic gel, buffering Tris-HCl solution and the eluting liquid containing NaCl and Tris-HCl, affinity chromatography by use of the gel coupled by its monoclonal antibody, PBS as balancing liquid and washing liquid, Gly-HCl as eluting liquid, Tris-HCl as regeneration liquid and NaAc-Hac as buffering liquid, and gel filtering by use of Sephacryl gel and PBS as buffering system.

The invention relates to a half-module pivoted window mechanism applied to a sub transonic speed wind tunnel. The half-module pivoted window mechanism comprises a driving transmission module, a feedback and measurement module and a rotating module, wherein the driving transmission module consists of a support seat, a large cylindrical straight gear, an alternating current servo motor, a speed reducer, a gear press cover, a small cylindrical straight gear, a compression cover and a compression screw, the feedback and measurement module consists of a potentiometer support seat, a potentiometer, a press sheet, a shaft coupler, a small shaft and a connecting cover, and the rotating module consists of a right bearing cover, a bearing seat, a pair of precise conical roller bearings, a left bearing cover and a main shaft. Through the adoption of a cylindrical straight gear group, the half-module pivoted window mechanism can realize the movement for positive 360 degrees and negative 360 degrees, in addition, the integral hosting of the mechanism can be realized, a measurement part adopting the potentiometer as the core is adopted for the transmission matching of the cylindrical straight gear group, and the attack angle control precision being +/-3' can be realized.

A turning, closing-up and rib rolling device for tube parts relates to closing-up and rib rolling devices for tube parts and solves the problem that a die used for closing up tube parts is complicated in structure, long in processing cycle, high in cost and poor in universality. Stepped holes are arranged at an axial center of a roller, the outer surface of the roller is an outwardly protruded arc surface, a bearing is arranged in a bearing mounting hole, a pressing section on a press ring is disposed in the bearing mounting hole, the end surface of the pressing section presses an outer ring of the bearing tightly, the press ring is connected with the roller through screws, a roller rack is of a shifting fork structure, an assembly consisting of the roller, the bearing and the press ring is disposed in a groove, a threaded end of a shaft sequentially penetrates through a lateral shaft mounting hole, a roller inner hole, an inner hole of the bearing, a through hole and another lateral shaft mounting hole, a limiting sleeve is sleeved on the shaft and presses an inner ring of the bearing tightly, a gasket is sleeved at the threaded end of the shaft, and a nut is connected with the threaded end of the shaft in a threaded manner. The turning, closing-up and rib rolling device of the invention is used for realizing turning, closing-up and rib rolling on serial tube parts with identical shapes and different outer diameters.

The invention relates to the field of sludge treatment, in particular to a recycling and emission reduction method of gaseous substances in sludge aerobic treatment. The international patent classification (IPC) number of the invention is C02F1/74. The sludge aerobic treatment is divided into two stages, namely a main gas production stage and a microbiological gas production stage, wherein the gaseous substances generated in the main gas production stage are utilized to improve the active environment of microorganisms in the microbiological gas production stage, thus the microorganisms in the microbiological gas production stage can be used for further completing the oxygenolysis of organic substances and removing main smelly substances in the aerobic treatment; and finally the gases generated in the microbiological gas production stage are collected and discharged when meeting the related standard. By adopting the method provided by the invention in the sludge oxidation treatment process, according to the relation between the activity of microorganisms in sludge and the environment, the gases generated in the high temperature oxidation stage are recycled to improve and regulate the microbiological environment in the low temperature stage; in the entire process, no foreign microbial agent is used, and no biological deodorization equipment is required; and the investment cost and the operating cost are low, no smelly gases is discharged in the whole process, the production cycle is shortened, and the fertilizer efficiency of the product is greatly increased.

The invention discloses an agricultural waste treatment system. The agricultural waste treatment system comprises a crushing device, fermentation tank and an earthworm processing bed, wherein the crushing device is used for crushing materials, the fermentation tank is used for fermenting the crushed materials, and the earthworm processing bed is used for processing fermented biogas residues. The crushing device comprises a crushing chamber and two crushing rollers, wherein the two crushing rollers are arranged in the crushing chamber and are internally and separately provided with gas channels, and air outlets communicating with the gas channels are separately arranged on the surfaces of the two crushing rollers. The earthworm treatment bed comprises a pool body, a processingchamber and aliquid collecting chamber, wherein the liquid collecting chamber is used for collecting excess biogas slurry in the processing chamber and is arranged below the processing chamber and can move up anddown relative to the processing chamber. The agricultural waste treatment system effectively shortens the processing period and improves the working efficiency by arranging the gas channels and the air outlets on the crushing rollers.

The invention provides a sludge treatment method and system, and belongs to the technical field of environment protection. The sludge treatment method comprises the following steps: firstly, removing impurities in sludge; secondly, applying high pressure and low pressure to the sludge in an alternate change manner; thirdly, adding a chemical agent into sludge to enable heavy metal to be precipitated; finally, performing solid-liquid separation on sludge, and treating to obtain treated sludge. The sludge treatment method system comprises a sludge pre-treatment unit, a sludge reaction unit and a sludge post-treatment unit which are connected with one another to form a treatment channel in which the chemical agent is placed; the sludge reaction unit comprises a pressure regulator used for applying high pressure and low pressure to the sludge in an alternate change manner; through the adoption of the pressure regulator, biologically-adsorbed heavy metal can be separated out. Through the sludge treatment method and system provided by the invention, energy consumption in the sludge treatment process can be reduced, and the sludge treatment procedures can be simplified, so that the treatment cycle of the sludge can be shortened.

The technical scheme adopted by the invention is a two-stage aging method for improving the intercrystalline corrosion resistance of 6000 series of aluminium alloy. The two-stage aging method comprises the following steps: after carrying out solid-dissolving treatment and quenching on the 6000 series of aluminium alloy, respectively carrying out (1) high-temperature preaging and (2) low-temperature reaging. The two-stage aging method has the beneficial effects that the purposes of improving the intercrystalline corrosion resistance of 6000 series of Al-Mg-Si-Cu aluminium alloy and maintaining the strength are realized; simultaneously, the method is simple in process step and short in treating period and is suitable for industrial production.

The invention relates to a high-temperature measuring section for a fuel gas turbine combustor test, and aims to solve the technical problems of high price and easy damage of the existing high-temperature measuring section for the fuel turbine combustor test. The high-temperature measuring section comprises a shield shell, a front flange, a rear flange and a high-temperature fuel gas channel; and the shield shell is provided with the front flange at the front end and is provided with the rear flange at the rear end. The high-temperature measuring section for the fuel gas turbine combustor test is characterized by further comprising a central heat-resistant pouring material, and the central pouring material is fixedly filled in the inner face of the shield shell by an inversed T-shaped nail. The high-temperature measuring section is applied to the field of high-temperature measuring.

The invention discloses a fault constraint chromatography inversion method and inversion system. The method comprises the following steps: step 1, calculating an underground geological inclination angle and a fault attribute of a migration profile based on a seismic migration image; step 2, based on the underground geological inclination angle and the fault attribute, constructing a structure constraint precondition chromatography equation set; and step 3, solving and constructing a constraint precondition chromatography equation set to obtain an underground speed model and an offset profile.Automation of the whole tomography inversion iteration process is achieved, manual intervention is not needed, the manual workload is reduced, the processing period is shortened, and the working efficiency is improved; the underground geological dip angle and the fault attribute are introduced to constrain the speed model, so that the speed model obtained through inversion has high precision in acomplex structure area, especially a fault development area, and the requirement of subsequent migration imaging is met.

The invention discloses a wheat straw drying box. The wheat straw drying box comprises a box body, and is characterized in that a box door is arranged on the front face of the box body, and a touch control display is arranged below the box door; a control circuit board is arranged at the bottom in the box body; a partition board is arranged above the control circuit board; a plurality of drying trays are arranged above the partition board; a draught fan is arranged on one side of each drying tray; infrared heat wave pipes are arranged on the top in the box body; a plurality of air circulation pipes are arranged on the top of the box body; and the touch control display, the draught fan and the infrared heat wave pipes are all connected with the control circuit board. A plurality of through holes are formed in the bottom face of each drying tray. The wheat straw drying box has the beneficial effects that the wheat straw can be effectively and rapidly dried, the processing period of the wheat straw is shortened, and the manufacturing efficiency of wheat straw pictures is improved, the drying time and the drying temperature are convenient to set, and using is convenient.

The invention discloses a stator machining method and device and a rotor machining method and device. The relative movement principle of a stator and a rotor is utilized, during stator machining, the rotor is manufactured to a stator tool which is used for cutting an inner cavity of the stator, and a driving device of the stator tool is a rotation-revolution driving device with a feeding function, so that the stator tool rotates around the axis of the stator tool and does revolution movement around the axis of the stator in the tool feeding movement process; and during rotor machining, the stator is manufactured to a rotor tool which is used for cutting the periphery of the rotor, and a driving device of the rotor is a rotation-revolution driving device with a feeding function, so that the rotor rotates around the axis of the rotor and does revolution movement around the axis of the rotor tool in the feeding movement process. By means of the stator machining method and device and the rotor machining method and device, the problems that traditional machining processes are complex, the machining difficulty is high, the cycle is long, and the cost is high are effectively solved.

The invention discloses a method for softening woven bamboo. The method is simple, the processing period is shortened to be 9-10 hours, working efficiency is improved by 11.7%, production cost is reduced by 13.4%, and the natural color and luster of the bamboo cannot be influenced. The method includes the steps that a bamboo billet is soaked in saline water, sterilization and high-temperature dehydration can be achieved at the same time, the cellular structure is changed, and treating fluid can better permeate in the later period; the bamboo billet is subjected to high-temperature sand bath, wet leaves are used for spacing, the bamboo billet is wetted at first and then dried, the fiber structure is softened primarily, and permeability is enhanced; permeability of a softener solution is good, bamboo fibers can be softened quickly, and the bamboo is made pliable, tough, soft, smooth and free of cracking; bamboo filaments can be processed conveniently, the softened bamboo cannot mildew, cannot breed insects and is resistant to high temperatures for a long time, and thus storage and use are facilitated; and at last, by means of medium-temperature drying, moisture is evaporated slowly, moisture again can be avoided, energy is saved, and the environment is protected.

The invention belongs to the technical field of high polymer materials and specifically relates to a thermoplastic elastic material for producing a non-pneumatic tire and a preparation method of the thermoplastic elastic material. The thermoplastic elastic material comprises a hydrogenated styrene-ethylene-butadiene-styrene polymer, paraffin oil, polypropylene, a polyolefin elastomer, ethylene-propylene-diene monomer rubber and auxiliaries. The thermoplastic elastic material prepared by compounding the raw materials is small in specific gravity, excellent in surface elasticity, wear-resistant,high-temperature-resistant and low in cost; the preparation method of the thermoplastic elastic material for producing the non-pneumatic tire comprises the following steps: mixing the raw materials according to a certain proportion, and uniformly stirring the raw materials at room temperature to obtain a mixed material; delivering the mixed material into an extruder at constant speed to carry outextrusion; and carrying out pelletization after extrusion. The method is simple in process and high in production efficiency, and the prepared elastomer is good in consistency.

The invention discloses a small combined spring type unfolding mechanism which comprises a rudder surface, a compression spring, a rudder seat and a rotating unit. The compression spring is arranged on the rudder surface, the rudder surface is in the shape of a right trapezoid, and the compression spring, the rudder seat and the rotating unit are sequentially arranged at the trapezoidal bottom of the rudder surface from bottom to top. The rotating unit comprises a rotary shaft, a rudder surface cylindrical pin, a first torsion spring, a second torsion spring, a screw pin and a spring seat, the middle of the rotary shaft is fixed to the rudder surface by the aid of the rudder surface cylindrical pin, the first torsion spring and the second torsion spring are respectively arranged on two sides of the rudder surface cylindrical pin and are disposed in the rotary shaft, the other side of the first torsion spring is connected with the rudder seat, and the other side of the second torsion spring is connected with the spring seat. The small combined spring type unfolding mechanism has the advantages that a combined spring mode is adopted, the maximum thickness of the integral mechanism is only 10mm, accordingly, the small combined spring type unfolding mechanism can be applied to mechanisms with small space, and is low in cost.

The invention discloses a polycyclic aromatic hydrocarbon-heavy metal contaminated soil leaching device and restoration system, and belongs to the technical field of contaminated soil restoration. Thepolycyclic aromatic hydrocarbon-heavy metal contaminated soil restoration system comprises a crushing and sorting device, the leaching device, a vacuum dehydration device, a primary treatment tank and a secondary treatment tank, wherein a feed inlet of the leaching device is connected with the crushing and sorting device, and a discharge hole of the leaching device is connected with the vacuum dehydration device. The polycyclic aromatic hydrocarbon-heavy metal contaminated soil restoration system adopts ectopic soil leaching, wherein ectopic soil leaching specifically comprises the steps of digging out contaminated soil, then transferring pollutants in a soil solid phase to a liquid phase through ion exchange, precipitation, adsorption, chelation and the like by using an eluting agent, and then treating a leaching solution containing the pollutants. The polycyclic aromatic hydrocarbon-heavy metal contaminated soil restoration system has the characteristics of short treatment period, good effect, low cost, no hidden danger of heavy metal migration and the like.