151results about How to "Conserve non-renewable resources" patented technology

The invention relates to a bio-based 3D printing material and a preparation method thereof, and aims to solve the problems that a conventional 3D printing material of polylactic acid is relatively small in crystallization degree, small in bond energy of ester bonds in molecule chains and has high probability of cracking. The bio-based 3D printing material is prepared from the following raw materials in percentage by weight: 20-40% of polyactic acid, 35-60% of thermoplastic starch, 3-10% of a toughening agent, 5-10% of a cross-linking agent, 5-13.4% of a filling agent, 0.5-2% of a thermal stabilizing agent, 1-3% of a lubricating agent and 0.1-5% of a preservative. The preparation method comprises the following steps: mixing polyactic acid with the thermoplastic starch, the toughening agent, the cross-linking agent, the filling agent, the thermal stabilizing agent, the lubricating agent and the preservative, pelleting and performing injection molding to obtain a modified polylactic acid. Due to adoption of the polyactic acid and the thermoplastic starch, the bio-based 3D printing material is good in compatibility, the elongation at break, the strength, the flexibility and the thermal resistance of the modified polyactic acid are all improved, and the additional value of a starch material is also increased.

The invention discloses a high-modulus bituminous mixture additive and a preparation method thereof. The high-modulus bituminous mixture additive is composed of a modifying main agent, butadiene styrene rubber, polyethylene paraffin, a filling material, an anti-aging component, and a plasticizing component according to a mass percentage of 100:(10-30):(15-40):(40-80):(2-6):(5-20); wherein the modifying main agent consists of one or more components selected from waste PE, polypropylene, and EVA. The preparation method comprises the following steps: evenly mixing the modifying main agent, butadiene styrene rubber and polyethylene paraffin at a temperature of 160 to 190 DEG C, adding the filling material, anti-aging component and plasticizing component into the mixture, evenly mixing under a certain rotation speed, then extruding the mixture by a screw extruder, cooling at the room temperature, and finally cutting into particles. The high-modulus bituminous mixture additive is mainly applied to pavement projects such as new construction and reconstruction of high grade roads and heavy traffic roads, can improve the dynamic stability, static modulus, dynamic modulus and shearing resistant performance of bituminous mixture, thus prominently reduces the damages of rut, displacement, or the like, and can improve the low-temperature anti-cracking performance of high-modulus bituminous mixture at the same time.

The invention discloses an on-site construction method of a cold recycling asphalt pavement. The on-site construction method comprises the following process steps: digging out used materials of the asphalt pavement by a pavement milling and planing device; performing continuous circulating crushing and screening on the used materials of the asphalt pavement by a crushing and screening device; placing the crushed and screened used materials of the asphalt pavement into a finished product hopper, mixing emulsified asphalt with water in a proportion of 1: 1, blending with the used materials of the asphalt pavement in the finished product hopper, then adding a mixture of cement and ore powder to form an asphalt mixture; laying the asphalt mixture on a base layer of the pavement in a slow, uniform and continuous way, completing the compaction of a recycling asphalt mixture through three rolling stages, namely initial rolling, re-rolling and final rolling; and standing and curing the rolled base layer of the cold recycling asphalt mixture for 10-14 days. According to the method disclosed by the invention, the proportion of one-time cold recycling is high, the economic benefits are higher, the problem of secondary pollution is avoided, and the method is a green and environment-friendly preparation method.

The present invention relates to a multicomponent combined degradable foamed plastic material and its preparation method. Its composition includes (by weight portion) 70-100 portions of modified polylactic acid mother granules, 1-20 portions of carbon dioxide resin and / or fatty polycaprolactone, 0.5-1.5 portions of lubricant demoulding agent, 1-5 portions of foaming agent and foaming adjuvant and 1-5 portions of cross-linking agent. Its preparation method includes the following steps: (1). inorganic powder body modification; (2). starch modification; (3). polylactic acid modification; and (4). plasticization foaming so as to obtain the degradable foamed plastic sheet material.

The invention discloses a preparation method of an ecological plate, which comprises the following steps of: step 1, preparing melamine impregnated cellophane paper, wherein glue content is increased by 15-20% in the preparation process in comparison with a traditional formula; step 2, attaching the melamine impregnated cellophane paper on special-shaped veneers; step 3, preparing an intermediate substrate; step 4, respectively adhering the veneers attached with the melamine impregnated cellophane paper to two surfaces of the intermediate substrates, and pressing and heating the two surfaces of the intermediate substrate to get the ecological plate. In the preparation method provided by the invention, a grainy paper for printing substitutes a natural wood material to serve as a decorative finish of the plate, so that usage amount of wood is greatly reduced, and non-renewable resource is saved; oil paint is substituted after the surface of the plate is impregnated by melamine, so that cost on processing is greatly saved, processing time is greatly shortened, and environmental performance of the preparation method is far better than that of the conventional production method; and the prepared ecological plate is excellent in surface abrasive resistance, scratch resistance, stain resistance and fire resistance, and is fashionable in design and color expression, so that the prepared ecological plate can meet the requirements of different consumers.

The invention relates to a soilless culture medium and particularly relates to a soilless culture medium for vegetables. A preparation method of the soilless culture medium is characterized by comprising the following steps: uniformly mixing solid materials to obtain a solid medium; spraying a nutrient solution to the solid medium and uniformly mixing to obtain materials, placing the materials at 15-30 DEG C for 13-15 days, and naturally fermenting to obtain the soilless culture medium, wherein the solid materials comprise the following components in parts by weight: 2-3 parts of thoroughly decomposed furfural residues, 2-3 parts of thoroughly decomposed corn stalks, 0.5-1 part of perlite, 1-2 parts of vermiculite, 2-3 parts of furnace clinker, and a ratio of the nutrition solution to the substrate is (1-2) to 50. According to the soilless culture medium of the vegetables disclosed by the invention, the raw materials and the method are unique, the yield of the vegetables can be increased, the amount of pesticides can be reduced, the resource cyclic utilization is realized, and the production cost is lowered.

An automatic biofuel-combustion multipurpose furnace comprises a furnace body, wherein the furnace body consists of a combustion furnace, a fuel bucket, a feeding device and an automatic control device, the fuel bucket is positioned above the combustion furnace which is obliquely provided with a feeding pipe and internally provided with a combustion pool, the lower port of the feeding pipe is positioned above the combustion pool, the feeding device is arranged between the upper port of the feeding pipe and the combustion bucket, the furnace body is provided with an automatic igniter, the front end of the automatic igniter is contacted with the combustion bucket, a water drum wall is arranged on the side wall of the combustion furnace, a water inlet and a water outlet corresponding to the water drum wall are arranged on the combustion furnace, a water boiling port is arranged at the upper end of the combustion furnace and provided with a water boiling tray, a slag collection box is arranged under the combustion furnace, the combustion furnace is provided with an air inlet under the automatic igniter, an air outlet is arranged at the lower part of the furnace body and provided with an exhaust fan. The automatic biofuel-combustion multipurpose furnace can save non-renewable resources by combusting biofuel, and has the advantages of environment friendliness and safety.

The invention relates to a portland blast furnace slag cement and a preparation method thereof. The portland blast furnace slag cement is prepared from the following raw materials by weight percent: 12%-30% of at least one of slag, coal gangue, boiling slag, liquid slag, cinerite, kiln dust and crushed tile, 10%-42% of mineral waste residue, steel slag or silicomanganese slag, 0-12% of limestone, 2%-8% of gypsum, 0-10% of zeolite, 0-17% of boiling slag, 0-10% of coal ash, and 10%-50% of silicate series cement. The preparation method comprises steps of putting the slag, mineral waste residue, gypsum, zeolite, boiling slag, and coal ash into a pulverizer to be smashed, grinding by a ball mill to achieve the fineness of 0.08mm, sieving by a square hole sieve with 2% left, and then mixing with the silicate series cement. The portland blast furnace slag cement has the advantages of having a simple preparation method, needing no cement clinker, guaranteeing the strength and stability of the cement, fully using industrial residue resources like slag and mineral waste residue, lowering production cost, and reducing the pollution of industrial residue to the environment.

The invention relates to electronic product, especially disclosing a control method and system for Li battery charging in an electronic product. And a charging control method comprises the steps of: A1. detecting Li battery capacity and starting charging the Li battery and executing step A2 when the capacity is equal to or less than a first lower limit value; and A2. real-time detecting the Li battery capacity in the charging course and stopping charging and returning to the step A1 when the capacity is equal to or more than a first upper limit value. And it can combine with the existing techniques, meeting different occasions. And the charging system comprises Li battery module, charging module, detection module and storage module, as well as two control modules and charging mode management module.

The invention discloses a production method of radiation-proof cement and sulfuric acid. The invention provides a kiln gas with the concentration of sulfur dioxide gas being 7.0-11.0% and a barium cement clinker by preheating, decomposing and calcining the main raw materials such as desulfurized gypsum, anhydrite and barite by adopting a five-stage cyclone preheating technology and a 'two-transformation and two-absorption' pickling and acid making technology. By adopting the 'two-transformation and two-absorption' pickling and acid making technology, the sulfur dioxide gas is made into industrial sulfuric acid with the mass fraction being 92.5% and 98.0% respectively; the obtained barium cement clinker is cooled by a cooling machine, and then sent to a cement grinding mill together with 2.0-4.5% of the gypsum to produce the barium cement with anti-radiation performance. The production method has the advantages that the raw material proportion is unique, which facilitates the production of the sulfuric acid; the waste resources of the desulfurized gypsum, fly ash, stone coal, and the like, are fully used without secondary pollution; the utility value of the barite resource is fully brought into play; and the five-stage cyclone preheating technology results in low energy consumption and high benefits.

The present invention is preparation process of composite polyacrylate emulsion for pressure sensitive adhesive, and relates to polyacrylate based adhesive. The composite emulsion in core-shell structure is prepared through compounding nanometer silica hydrosol and polyacrylate emulsion. Specifically, the preparation process includes the following steps: 1. preparing seed emulsion, of which the nanometer silica hydrosol is prepared through sodium silicate hydrolyzing process and has solid content of 42-45 %, particle size of 50-100nm and particle size dispersing index of 0.05-0.195; 2. pre-emulsifying of shell monomer; and 3. preparing nanometer silica polyacrylate composite emulsion. The composite polyacrylate emulsion coating is dried to obtain the pressure sensitive adhesive with high initial adhering performance and good long time adhering performance.

The invention discloses a method for producing an organic fertilizer by treating paper making sludge with microflora. In the method, sludge and auxiliary materials in a paper mill are taken as raw materials for serving as high-quality protein resources of the organic fertilizer, beneficial microbial bacteria are subjected to pure culturing, so that the organic fertilizer which can be absorbed more easily by plants and has quicker acting is produced. Due to the adoption of the method, the problem of environmental pollution caused by the paper mill is solved; and by applying the fertilizer, soil can be remarkably improved, the soil fertility is increased, the growth of plants is promoted, the crop quality is improved, and the absorption of other nutrients by crops is promoted.

The invention discloses a plate split mounting type road surface manufactured by utilizing waste plastics. The left sides and the right sides of road surface plates are provided with bulges and grooves in various shapes so that every two adjacent road surface plates can be inserted together in a bearing mode, drilling holes allowing steel strands to penetrate through are formed in the upper sidesand the lower sides of the road surface plates, the compactness and the stability of the road surface can be ensured when the steel strands are connected together. A plurality of grooves are formed inthe sides, close to the roadbed, of the road surface plates, and can be used by cooperating with the plate split mounting type roadbed, and a more stable effect can be achieved by inserting the bulges on a roadbed block into the grooves in the road surface plates; and the road surface plates can further be manufactured to be hollow so that various cables and pipelines can be placed conveniently.In addition, in order to conveniently place the pipelines, the road surface plates with the open lower portions further can be manufactured, and grooves can be additionally formed in the position, incontact with the roadbed, of the bottom face so as to improve the stability.

The invention discloses a mud-water amphibious plate-inserting device for a soft foundation, which comprises a plate-inserting machine, wherein the plate-inserting machine is arranged on a track, and the track is arranged on a floating body; and the plate-inserting machine comprises a bracket, a plastic drain board conveying device, an inserting tube and a bidirectional driving device thereof. By using the mud-water amphibious plate-inserting device to carry out soft foundation treatment, the invention cancels the phase of paving geotextiles and wattles or the phase of temporarily consolidating the superficial layer of a manually-inserted drain board in the traditional process, and omits a fine sand bedding layer and a coarse sand filtering layer, thereby saving the temporary consolidation treatment phase in the treatment procedure and saving a great quantity of nonrenewable resources and a lot of money; after mud is subjected to hydraulic reclamation, the plate inserting operation can be performed under the condition that water is adhered to the mud, thereby greatly shortening the construction period; and meanwhile, because the plate-inserting depth can reach more than 20 meters, plates can be inserted in place in one-step operation. Thus, a lot of money can be saved by only omitting the fine sand bedding layer and the coarse sand filtering layer; and compared with the traditional process, the construction time is greatly shortened.

The invention provides a large casting lost-foam resin sand casting process which comprises steps of mould manufacturing, mould assembling, paint spraying and drying, resin sand vibration-filling, bottom-injection type semi-closed casting system applying, a casting clearing process and the like. A large casting lost-foam model is processed in a programmed and digital manner; the mould material replace rare korean pine wood with reproducible low-cost EPS foam, so that a great deal of non-renewable resources are saved; meanwhile, the processing performance and efficiency are greatly improved. A pouring system is designed with a gas exhaust channel, so that complex operations such as operation of eliminating a mould cavity lost mould by adopting methods such as combustion, and the like are avoided, limit in aspect of a metal material of a lost-foam casting process is further broken through, and therefore, the application field is wider.

The invention discloses an acer rubrum cuttage medium and a preparation method thereof. The medium is prepared from the following materials in parts by weight: 30 to 50 parts of an organic fermented material, 5 to 10 parts of peat soil, 15 to 20 parts of vermiculite, 5 to 8 parts of perlite, 2 to 5 parts of rice husk powder, 2 to 5 parts of pine barks, 4 to 9 parts of pine needle soil and 3 to 6 parts of Rixiang stones. The medium provided by the invention has a plurality of good physiochemical properties including better air permeability, porosity, moisture and fertilizer retaining capabilities and the like; a lower-layer medium for growth and an upper-layer medium with heat-insulation, moisture-keeping and antibacterial performances, which are separately arranged, meet a growth principle of cuttage strips, so that the survival rate is improved. The acer rubrum cuttage medium has the advantages that components are easy to obtain, the preparation is convenient and the cost is low; non-renewable resources are saved, the environment is protected and the sustainable development is realized; the survival rate of cultivated cutting slips is high, root systems are developed, and seedlings are ordered and strong and have stable properties, so that the acer rubrum cuttage medium has higher economic values.

The invention discloses a solar boiler soft water preheating system. The solar boiler soft water preheating system comprises a boiler (1), deoxidizing equipment (2), a soft water box (3) and a solar thermal collector (4), and the solar boiler soft water preheating system is characterized in that the solar thermal collector (4) is connected with a heat storing water box (6) through a hot water pipe (5); and the heat storing water box (6) is connected with the solar thermal collector (4) through a water supplying pipe (7) which is provided with a water supplying pump (8), the hot water pipe (5) and the water supplying pipe (7) are respectively provided with a hot water temperature controller (9) and a water supplying temperature controller (10) which are respectively connected with a central control system, the heat storing water box (6) is connected with the soft water box (3) respectively through a water outlet pump (11) and a water supplementary pump (12), and the soft water box (3) is connected with the deoxidizing equipment (2) and the boiler (1) in sequence through a pipeline. The solar boiler soft water preheating system provided by the invention increases the initial temperature of soft water by utilizing renewable solar energy, is energy-saving and emission-reducing, saves non-renewable resources and reduces environmental pollution.

The present invention relates to the technical field of new energy, and discloses a pellet fuel prepared by use of crops straw, the pellet fuel comprises the following raw materials by weight: 10-15 parts of cotton stalk, 10-15 parts of corn straw, 10-15 parts of peanut shell, 5-10 parts of dahurian larch sawdust, 5-10 parts of rice husk, 5-10 parts of soybean hulls, 3-5 parts of alumina, 3-5 parts of magnesium carbonate, 3-5 parts of calcium carbonate and 3-5 parts of pine oil. The pellet fuel utilizes the abandoned crops as the raw materials, and uses local materials, the product has the characteristics of being energy saving, environmentally-friendly, non renewable resource-saving, and the like, and eases the contradiction of the shortage of electric power and petroleum; the pellet fuel utilizes the crop straw as the main ingredient, is added with suitable amount of additives, is clean and environmentally-friendly, fully uses energy, and makes full use of waste biomass fuels, the raw material source range is wide, combustion rate is high, the pellet fuel is safe to use, and sustainable to use, bottom ash slagging rate is low, and the combustion pollution is less.

The invention discloses a method for preparing a biomass conductive charcoal electromagnetic shielding material. The method comprises the following steps of: firstly, using a nickel-based or iron-based compound as a main catalyst and using a calcium-based compound as a cocatalyst to prepare a catalyst, then low-temperature carbonizing biomass conductive charcoal under 480-520 DEG C, cooling and taking out the catalyst and the biomass conductive charcoal, fully mixing the catalyst and the biomass conductive charcoal, high-temperature carbonizing the biomass conductive charcoal under 800-1000 DEG C, and further pretreating the biomass conductive charcoal, to obtain final biomass conductive charcoal. After the biomass conductive charcoal, a resin and a solvent are uniformly mixed according to a mass ratio of 4-10: 1:1-3, a mixture liquid is poured into a stainless steel die with thickness being 1-15mm, the mixture liquid is cured and formed under a constant pressure of 1-20MPa for 0.5-5h, and then the biomass electromagnetic shielding material is obtained after demolded. The method for preparing the electromagnetic shielding material has advantages of good adaptability on raw materials, stable quality and large potential.

The invention discloses a bag-controlled sustained release fertilizer for a mango tree and an application method thereof. The bag-controlled sustained release fertilizer for the mango tree specifically involves preparation of a fertilizer bag, compositions of a fertilizer, and a fertilizer application method. According to the bag-controlled sustained release fertilizer for the mango tree and the application method thereof, a package bag is made of paper; the package bag is started to decompose spontaneously two years after the fertilizer is applied; soil and air are not polluted, and a soil loosening effect is achieved. Meanwhile, the fertilizer efficiency of the bag-controlled sustained release fertilizer is long; the nutrient utilization rate is high. The effects of improving crop yieldand improving crop quality can be achieved. The manpower and material resources used for applying the fertilizer can also be saved effectively; the fertilizer is really applied quantitatively and accurately according to the requirement of the mango tree; meanwhile, the concentration of quick effective nutrients of the soil can be kept stable; the defect that the nutrient concentration of fertilizer applied soil fluctuates greatly is overcome; the nitrogen utilization rate is improved by 10 percent. In addition, the effects of protecting oil and reducing environment pollution are also achieved.By promoting and applying the bag-controlled sustained release fertilizer, safety and environment friendliness can be achieved; the bag-controlled sustained release fertilizer has long-term ecological benefits and remarkable social and ecological benefits, benefits the nation and the people, and has a very broad prospect.

The invention provides an automatic industrial furnace by burning biofuels. The furnace comprises a furnace body, a fuel hopper and an automatic feeding mechanism, wherein a combustion chamber, an air inlet, an air outlet, a water tank and a flue gas channel are arranged in the furnace body, the combustion chamber is provided with a conveyor belt device, the conveying tail end of the automatic feeding mechanism extends into the combustion chamber and is positioned above the conveying initial end of the conveyor belt device, the side of the conveying initial end of the conveyer belt device is provided with an automatic igniter, a slag collection box is arranged below the conveyor belt device, the air inlet is provided with an air inlet fan, the air outlet is provided with an air outlet fan, the shell of the air exhaust fan is provided with a flue temperature sensor and a flue pressure sensor, the water tank is provided with an water inlet and a water outlet, the water inlet and the water outlet are arranged on the furnace body and are respectively provided with a water circulation controller and a water temperature sensor, and the outside of the furnace body is provided with a circuit control system. According to the invention, the automatic industrial furnace by burning the biofuels has the advantages of environmental friendliness and safety.

The invention provides a plate spliced pervious roadbed made by utilizing waste plastics. The waste plastics comprise propylene, polyethylene, polypropylene, polyvinyl chloride and the like. Accordingto the current market conditions, the polyethylene plastics account for 50% of the waste plastics and belong to thermoplastic resin polymers. Therefore, the thermoplastic waste plastic products can be selected to produce and make the plate spliced pervious roadbed. Bulges and grooves of multiple shapes are formed in the left and right sides of the pervious roadbed plate, so that two adjacent pervious roadbed plates are inserted together. Drill holes through which steel strands penetrate are formed in the upper and lower sides, and the pavement can be tight and stable when the steel strands are connected together. A plurality of bulges are arranged on one side, which is close to the pavement, of the roadbed plates and can be matched with the plate spliced pavement, so that the bulges on the roadbed blocks are inserted into the grooves in the pavement panel so as to achieve an excellent stabilizing effect.

The invention discloses a radio frequency coaxial connector, and relates to a radio frequency coaxial connector for connecting between a transmission cable and a printed circuit board. Aiming at the problem that the conventional similar radio frequency coaxial connector only has two contact points for electrical connection and too small elastic holding and seizing force. The radio frequency coaxial connector is characterized in that: annular protrusions are designed at the outer periphery of a rear neck of an inner conductor pin head; an inner conductor pin tail consists of two tail plates which are bent into arc shapes and matched up and down and of which the opening ends have duckbill shapes, and the cross sections of the two tail plates are matched crescents; a connecting sleeve is designed between the non-opening end of the inner conductor pin tail and the rear neck of the pin head; and an insulating inner sleeve is designed between the outer periphery of the inner conductor pin tail and an insulating sleeve, and is provided with annular protruding reinforcing ribs corresponding to the surface of the outer periphery of the middle part of the maximally spaced bent arc part of the two tail plates and corresponding to the end part of the connecting sleeve. Through trial, the radio frequency coaxial connector has the advantages of obviously reducing signal attenuation, having more reliability of elastic holding, reducing manufacturing cost, and reducing the consumption of copper alloy, gold and silver resources.

The invention discloses an aerated concrete preparation method based on solid waste resource utilization, which comprises the following steps: (1) sequentially adding dry materials silicon tailing mud, iron tailing sand, sludge, waste slurry and titanium dioxide into a dispersion cylinder according to a certain proportion, dispersing at a high speed, sequentially adding cement, lime and desulfurized gypsum, adding aluminum powder paste, quickly stirring uniformly, and pouring; (2) after pouring is completed, performing gas-forming static-stop maintenance and (3) demoulding and carrying out high-temperature steam curing. According to the aerated concrete disclosed by the invention, the silicon tailing mud and the iron tailing sand are used as main siliceous materials, the sludge and the waste slurry are used as secondary siliceous materials, the lime and the cement are used as calcareous materials, the aluminum powder paste is used as a gas-forming agent, and the desulfurized gypsum isused as a regulator of a coagulation process. Compared with the prior art, the autoclaved aerated concrete is prepared by taking industrial by-products such as the silicon tailing mud, the iron tailing sand, desulfurized gypsum and the like as main materials, meanwhile, the comprehensive utilization way of the industrial by-products is expanded, and the circular economy and sustainable developmentconcept of the material is enhanced.

The invention discloses a lightweight ceramsite concrete assembly type prefabricated hollow staircase and a preparation method thereof. The hollow staircase is molded by pouring lightweight ceramsiteconcrete, and comprises hollow-column steps, steel bars and hoisting rings, wherein the insides of the hollow-column steps are poured into circular hollow holes; the steel bars are pre-embedded in thelightweight ceramsite concrete; the hoisting rings are arranged on the steps; the lightweight ceramsite concrete is prepared from cement, mineral powder, fly ash, fly ash ceramsite, water-quenched slag, pearlite sand, water and an admixture. According to the lightweight ceramsite concrete assembly type prefabricated hollow staircase, the fly ash ceramsite is taken as aggregate of concrete insteadof natural stones, so that non-renewable resources are saved; the lightweight ceramsite concrete assembly type prefabricated hollow staircase is a green, ecological and environment-friendly buildingmaterial, and has significant significance for solving of the problem of shortage of building material production resources and environmental protection.

Provided is an induction motor slot type design and calculation method. A horizontal line is drawn while end points of line segments forming a slot type and the widest transverse portion of an arc are taken as nodes. A slot is divided into a plurality of sections, and subdivided into four basic slot type elements, namely a trapezoid, a rectangle, an upper half-round with a flat top and a lower half-round with a flat bottom for solution or a newly self-defined slot type is directly designed through combination of the four slot type elements, and slot leakage reactance parameters of basic type slot type elements are obtained through combination calculation. Slot leakage permeance of a whole slot is a function sequentially accumulating slot leakage permeance parameters of element slot types. The method has the advantages that the slot type is divided into the four basic elements for calculation or is newly designed through the combination of the four slot type elements, a traditional slot type is not limited, and design flexibility is enhanced. The method can be applied to an induction motor, especially on a special motor having special requirements for motor performance, promisingly greatly lowers use of effective materials of the motor, and can save copper, iron, aluminum and other non-renewable sources.

A heat pump system is provided for heating water by using waste heat from an elevator machine room, comprising an air source heat pump 1, a pump 2 and a water tank 3, wherein the input of the pump 2 is connected with the outlet of the water tank 3 via a pipeline, the output of the pump 2 is connected with the inlet of the air source heat pump 1 via a pipeline, and the output of the air source heat pump 1 is connected with the inlet of the water tank 3 via a pipeline. The heat pump system is arranged inside the elevator machine room when in operation, to heat water by using the water heat of the elevator machine room. The invention has the advantages of reduced energy consumption (by 70% above), no frost formation in winter, stable yield, multiple functions in one machine, wide application range, resource utilization and good market prospect.

The invention discloses a desulfurized reclaimed rubber recycled asphalt mixture and a preparation method thereof, and belongs to the technical field of road engineering materials. The desulfurized reclaimed rubber recycled asphalt mixture is prepared from the following raw materials in parts by weight: 25-45 parts of an old asphalt pavement reclaimed material, 2-8 parts of matrix asphalt, 0.5-4 part of desulfurized rubber powder, 45-60 parts of a new aggregate and 3-8 parts of a component solubilizer. The preparation method comprises the following steps: heating and mixing the recycled asphalt pavement material of an old road and the matrix asphalt, adding the new aggregate, and finally adding the desulfurized rubber powder and the component solubilizer for modification. According to thedesulfurized reclaimed rubber recycled asphalt mixture, environmental pollution can be reduced, and the road maintenance and reconstruction cost can be reduced; and meanwhile, good anti-cracking performance is achieved, and emission of harmful gas can be reduced.

The invention discloses a soil conditioner for preventing and treating tobacco bacterial wilt and an application thereof. The soil conditioner is prepared by the following processes: 1) drying residual activated sludge and then crushing the residual activated sludge by a screen, so as to obtain fine powder; and 2) compressing and pelletizing the fine powder obtained in the step 1), carrying out pyrolysis on the fine powder under an anoxic condition, and then cooling the fine powder, so as to obtain the soil conditioner. The soil conditioner for preventing and treating the tobacco bacterial wilt disclosed by the invention contains abundant activated carbon and mineral substances, the content of an organic matter of the soil can be replenished, the moisture and nutrients are effectively stored, the soil fertility is improved, the physical and chemical properties of the soil are improved by virtue of the soil conditioner, the fertilizer and nitrogen can be protected, crop growth is promoted, soil-borne diseases can be effectively prevented and treated, particularly, the tobacco bacterial wilt can be significantly prevented and treated, heavy metals can be passivated, plant nutrients can be replenished, the continuous cropping obstacle can be removed, the micro-ecological environment of the soil is regulated, the disease resistance of the crop can be improved, the problem of disposal of the residual activated sludge is solved, waste is changed into treasures, and the sludge resource is utilized to the maximal extent.

The invention discloses a two-way turbine ocean current power generator which belongs to the field of energy power generation and main solves the problem of the waste of tide, tidal current and other renewable resources. The two-way turbine ocean current power generator comprises a casing, and is characterized in that a friction resistance fixed plate is arranged below the casing; two power generators are arranged in the casing; the two power generators share the same wiring terminal; each power generator is provided with a turbine; two turbines are respectively arranged on both ends of the casing; ratchet mechanisms are arranged between the casing and the turbines; and the pawls of the two ratchet mechanisms are respectively arranged on the casing fixedly. According to the two-way turbine ocean current power generator, the kinetic energy which is produced by the tide and the tidal current is fully utilized, and non-renewable resources can be saved.