92results about How to "Wide range of adaptability" patented technology

The invention relates to a one-step copper smelting technology and a device thereof. The interior of a furnace body is divided into three zones, namely a smelting zone, a blowing zone and a refining zone, by a retaining wall; and two rows of spray guns which are arranged in a staggered manner and have an included angle with a vertical line are arranged at the bottoms of the zones; return dust is mixed and then added into mixed copper concentrate and a solvent through a charging opening of the smelting zone, oxygen-enriched air is sprayed through the spray guns to carry out self-heating smelting, to generate copper matte; the spray guns in the blowing zone spray oxygen-enriched air so as to blow copper matte into crude copper and slag; the spray guns in the refining zone supply oxygen-enriched air for oxidization, and supply natural gas as a reductant for reduction, and the generated anode copper with high purity is interruptedly discharged form a copper discharging opening, so that the low-altitude pollution problem caused by SO2 can be solved, the operation environment can be greatly improved, the utilization rate of sulfur and heat can be obviously increased, and further the economic benefits can be increased further; in addition, the invention provides a one-step copper smelting technology which is more advanced, shorter in flow, lower in investment, lower in comprehensive energy consumption, higher in recovery rate, and better in comprehensive utilization in comparison with the existing continuous copper smelting technology.

The invention relates to a biological organic fertilizer adopting microbial fermentation and a preparation method thereof. The method comprises the following steps: firstly uniformly mixing pig manure, chicken manure, cow manure, grass carbon, vegetable cake, sawdust and bran according to weight proportion, then adding biological active water with certain concentration, stirring uniformly, and simultaneously regulating pH to be 6.9-8.9 to start fermentation, overturning every 2-7 days after stacking (when the temperature in the stack can reach 55 DEG C), then stacking in a concentrated way for fermentation again until fermentation maturing is finished (the total time is 7-15 days), namely, the temperature does not rise any more; and drying, smashing, screening and packing the obtained material when the water content is lower than 20 percent, thus obtaining the product. The organic fertilizer not only can improve soil, replace chemical fertilizers, cause yield of crops to be increased and improve crop quality, but also can reduce the content of harmful element, eliminate pesticide residue in soil, and can improve saline-alkali soil.

The invention discloses a camera array calibration method based on matrix decomposition, which comprises the following steps of 1) numbering a camera and taking photos of a calibration plate, and also numbering the obtained images according to the taking-photo sequence and the corresponding camera; 2) calculating homographic matrix of the camera by using the actual physic coordinate data of characteristics points on the calibration plate and the image data obtained from taking the photos; 3) constructing and measuring the matrix by using the calculated homographic matrix, the corresponding camera and the number of the calibration plate, and adjusting a proportional factor of the homographic matrix; 4) choosing a corresponding method to conduct matrix decomposition to measurement matrix W with data gap according to the arrangement condition of the camera array minus concentration or sparsity; 5) adding measurement restriction and calculating the internal and the external parameters of the camera; 6) conducting nonlinear optimization to the obtained data. The invention is suitable for camera array arranged in any way and can exactly obtain the internal and the external parameters of the camera.

The invention relates to the electricity field and discloses a bootstrap driving circuit. The circuit comprises an input filtering and protection circuit, a PWM signal generation circuit, an energy transmission circuit, a bootstrap voltage feedback circuit and a bootstrap voltage conversion and energy storage circuit. The input filtering and protection circuit realizes power supply ripple wave suppression, and overvoltage and undervoltage protection. The PWM signal generation circuit collects bootstrap output voltages, dynamically adjusts PWM signal oscillation and a duty ratio and adjusts switch open and close time. The energy transmission circuit generates an alternating current signal and transmits power supply input energy into the bootstrap driving circuit. The bootstrap voltage feedback circuit feeds back a bootstrap voltage signal level to the PWM signal generation circuit. The bootstrap voltage conversion and energy storage circuit carries out shaping conversion on an energy signal so as to realize power output of the bootstrap driving circuit. The circuit has advantages that a power supply application range is wide; the structure is easy to realized; a driving capability is high; a voltage-resistant value and reliability are high too; and the circuit is suitable for a large power and high efficiency switch application occasion in which a voltage is higher than a power supply input voltage.

The invention provides a distributed small-current grounding fault location method, and belongs to the electric power automation technology. The method is characterized in that the method comprises the following steps: a) a power distribution terminal carries out sampling and waveform recording on a zero-sequence current in a power distribution network; b) the power distribution terminal carries out detection on the zero-sequence current information, meanwhile, monitors broadcast messages sent by other power distribution terminals in the power distribution network and executes a zero-sequence current monitoring subprogram and a network broadcast monitoring subprogram; c) the power distribution terminal carries out zero-sequence current amplitude comparison; d) an adjacent detection power distribution terminal is determined; e) the adjacent detection power distribution terminal starts an adjacent detection flow; and f) fault sections or suspected fault sections are judged by utilizing the adjacent detection flow, and thus fault location is finished. The distributed small-current grounding fault location method does not need participation of a master station in the judging process of the fault sections, and is high in adaptation and higher in reliability.

The invention discloses a dark field defect detection device for a large-caliber ultra-precise surface and a measurement method thereof. According to the device and the method, the problems that the efficiency is low, and the integral surface defects cannot be automatically measured in an existing dark field imaging method are solved. The device comprises a light source, a sample fixing frame andan imaging microscope, wherein the imaging microscope is located above the sample fixing frame and is arranged vertical to a to-be-measured surface of a to-be-measured sample; a dome cover with an opening in the top end is arranged between the sample fixing frame and the imaging microscope; and the light source is fixed on the inner side wall of the dome cover, illumination light emitted by the light source is obliquely emitted to the to-be-measured sample, main reflection light on the to-be-measured sample is reflected to the outer side of the dome cover, and scattered light on the to-be-measured sample enters the imaging microscope through the opening in the top end of the dome cover. The dark field defect detection device has the advantages of simple structure, high image contrast, widematerial type adaptability and the like, and the full-field automatic measurement is realized.

The method includes steps: after carrying out flux shaping for received IP data packet, outputting write signal; based on write signal and read clock output from digital oscillator, determining buffered data quantity by FIFO; based on write signal and determined buffered data quantity, calculating filtering parameters; based on filtering parameters, determining recovered read clock. Coarse adjustment + fine adjustment in two stages to recover clock are adopted in flux shaping and in filer so as to solve jitter issue in recovering clock. Features are: simple, wide suitable range and good result.

The invention relates to a high-performance polycarboxylate based polyether water reducing agent, which is characterized by comprising the following components in percentage by weight: 13 to 16 percent of polyethylene glycol monomethyl ether, 5 to 8 percent of methacrylic acid, 0.6 to 0.9 percent of ammonium persulphate, 0.4 to 0.8 percent of sulfuric acid, 6 to 7 percent of ionic membrane alkali and 65 to 75 percent of deionized water. The polyethylene glycol monomethyl ether and the methacrylic acid are esterified at the temperature of 100 to 130 DEG C in the presence of a specific catalyst, namely the ammonium persulphate and then subjected to oxidation polymerization at the temperature of 80 to 90 DEG C in the presence of a specific oxidant, namely the sulfuric acid, to form a synthetic product of a specific structure. After a synthetic process is completed, the pH value of the synthetic product is adjusted at a normal temperature and the final product is formed. Apart from relatively high stability, the water reducing agent has the characteristics of low admixture, high water reducing rate, wide cement adaptability, high slump retaining capacity, good dispersion effect, high environmental friendliness, and the like when applied to concrete.

The invention discloses a hierarchical authority management component adaptive to a management information system of a multi-type organization. The component comprises: application program filtering condition configuration, used for defining the conditions which should be met by data which can be checked when a current login user enters an application program, the condition definition being in a parameterization mode, and the data table attribute value being expressed as the condition that the data line can be checked within a certain type of data permission range of the current login user orunder the condition that an intersection exists; and user data permission hierarchical configuration used for allocating users to specified roles and granting corresponding organizations, and the roles being associated with application program conditions and also associated with the users. And the user data authority control is used for controlling the current system login user to check the data range in the specific application program. Through the function module, filtering conditions configured by an application program where a current system login user is located and roles and organizations of user data permission hierarchical configuration can be obtained. According to the hierarchical authority management component, the overall construction cost of the management information system can be reduced, and the development efficiency and the construction quality are improved.

The invention relates to a bridge pier underwater surface attachment cleaning method and a underwater operation robot, and belongs to the underwater operation robot technology field. The cleaning method comprises the following steps of (1) putting a underwater cleaning robot into water, and then making a propeller drive the underwater cleaning robot to transversely move and adjust a posture till that a flexible crawler belt lands on a surface of a bridge pier along a vertical direction and abuts against the surface of the bridge pier; (2) starting negative pressure rotational flow adsorption devices arranged on two sides of a rack till that an adsorption force is used for driving the flexible crawler belt to abut against the surface of the bridge pier, and then closing the propeller; and (3) while the flexible crawler belt is controlled to drive the underwater cleaning robot to move along an axial direction of the bridge pier, making a cavitation jet flow cleaning nozzle installed on the rack carry out cleaning operation on attachments so as to wash strip-shaped cleaned areas arranged along the axial direction one by one in a target area. The cleaning method is suitable for cleaning a surface of a non-iron-and-steel structure and can be widely applied to the fields of bridge pier surface cleaning and the like.

The invention relates to biomass poly-generation equipment and method for integral pyrolysis-flue gas combined cycle. The biomass poly-generation equipment comprises a pretreatment system, a drying system, a temperature regulation system, an integral pyrolysis furnace, a comprehensive combustion furnace, a fuel gas purification system, a carbon forming system, a gas storage cabinet and a solar collector. In order to solve the problems that the controllability of three processes, namely pyrolysis-pyrolysis gas cracking-solid carbon decoking in the prior art is weak and the integrity is insufficient, the invention provides the biomass poly-generation equipment and method for integral pyrolysis, the three heat absorption processes, namely pyrolysis, pyrolysis gas cracking and solid carbon decoking are completed in regions and segments in the same high temperature environment; the pyrolysis-pyrolysis gas cracking-solid carbon decoking functions are integrated and integral, the reaction process is controllable, fuel gas with a high heat value and such products as high temperature carbon, wood tar, wood vinegar are produced continuously and efficiently. The biomass is fully cracked and the product quality is effectively controlled.

The invention discloses a silicon oxynitride combined carborundum high-temperature ceramic material which is made of raw materials of aggregate, power lot, admixture and binding agent, wherein the mass sum of the aggregate and the power lot is based on 100 percent, the content of the aggregate is 65-75 percent and the content of the power lot is 25-35 percent; the aggregate is carborundum aggregate; the power lot comprises carborundum powder, silica powder, silicon nitride powder, ball clay powder and fume silica; the admixture is vanadic oxide; and the bonding agent comprises sodium lignosulponate solution with concentration of 50 percent, polyvinyl alcohol solution with concentration of 6 percent and dextrine. The material ensures that the preparation process is more reasonable and economic by optimizing various component and the consumption thereof; during sintering, electric heating is not needed, N2 gas is not needed for protection and used as a reaction material, and the high-temperature ceramic material with favorable performance can be obtained by only heating a gas furnace in the oxidizing atmosphere. The invention also discloses a preparation method for the material, which adopts a ramming process and has the characteristics of little investment on equipment, short production flow, low energy consumption, wide application range and the like.

The invention discloses a method of cement kiln co-processing for calcium-added and passivated town sludge and solves the technical problems that the content of organic matters in the town sludge is lower while the content of heavy metals in the town sludge is higher, the nature of the sludge is not stable, the moisture content of the sludge is high and the sludge is difficult to transport. The implementation steps of the method are as follows: firstly, the constituents and the moisture content of the town sludge are tested, the pH value of the town sludge is usually between 6 and 8, and when the sludge meets leachate within the pH value range or in the landfilling state, the heavy metals are dissolved out easily, and the increasing of the pH value of the sludge is beneficial for passivation of the heavy metals and reduction of dissolution of the heavy metals; the town sludge is mixed with waste lime to ensure that the pH value of the mixture is between 9 and 10, and the mixture is kept stable at room temperature for 2-7 days; and the mixture enters a novel dry-process cement kiln from below a predecomposition furnace, silicon and calcium in the sludge and calcium in the lime can be used to produce silicate cement, and the organic matters in the sludge can be burnt so as to replace partial cement kiln fuel. The method of the cement kiln co-processing for the calcium-added and passivated town sludge is an economical, fuel-saving and low-pollution method for resource utilization of the town sludge.

The invention discloses a voice interaction method. The voice interaction method includes the steps that a voice control instruction is acquired and converted into a digital audio signal; the digitalaudio signal is transmitted to a voice semanteme cloud platform; a scene recognition instruction returned by the voice semanteme cloud platform according to the digital audio signal is received, the scene recognition instruction includes a corresponding scene determined according to the digital audio signal and scene interaction information determined according to the scene; and the scene recognition instruction is converted into an analog audio signal and voice play is performed. The invention further provides a voice interaction device and system and a computer storage medium.

The invention relates to a technology for shaping a ceramic-based composite material, which is integrated with principles of pressure injection, gel-casting and impregnating for preparing the ceramic-based composite material blank in complicated shape, even density of structure compositions and high strength so as to obtain a high-tenacity ceramic-based composite material product through sintering. The technology provided by the invention is a novel technology for shaping the ceramic-based composite material with high performance, complicated shape and fiber reinforcement, low cost and approximate net dimension. Compared with the prior art for shaping the fiber-reinforced ceramic-based composited material, the technology has the advantages of obvious superiority, short shaping time and high production efficiency.

The invention relates to a polycarboxylic acid high-slump-retaining zero-bleeding high-performance water reducing agent. The polycarboxylic acid high-slump-retaining zero-bleeding high-performance water reducing agent comprises the following components in percentage by weight: 60.0 to 80.0 percent of polycarboxylic acid ester water reducer with solid content of 20 percent, 15.0 to 35.0 percent of polycarboxylic acid ether additive with solid content of 20 percent, 1.0 to 2.5 percent of sodium gluconate, 0.5 to 1.5 percent of sodium lignin sulfonate, 0.2 to 0.5 percent of ionic membrane caustic soda, 0.2 to 0.5 percent of isothiazolinone antiseptic and mould proof bactericide, and 1.0 to 3.0 percent of deionized water; a preparation method comprises the following steps of: performing chemical combination on the polycarboxylic acid ester additive, the polycarboxylic acid ether additive, and the deionized water in the ratio at the temperature of between 30 and 50 DEG C; keeping the temperature, and adding sodium gluconate, lignosulfonate exciting agent to form the synthetic product with a specific structure; and cooling to normal temperature, adding the ionic membrane caustic soda to regulate the pH value, and adding the isothiazolinone antiseptic and mould proof bactericide to form the final product. The polycarboxylic acid high slump retaining zero-bleeding high-performance water reducing agent has low doped content, high water reducing ratio, wide cement application range, and high slump retaining capacity, is zero-bleeding and is suitable for cement with different labels.

The invention provides an efficient low-foam refining agent, which is prepared from the following ingredients including alkyl polyglucoside, branched chain fatty alcohol polyoxypropylene polyethenoxy ether, sodium polyacrylate, alkyl diphenyl ether disulfonate and water. According to a preparation method of the efficient low-foam refining agent, firstly, the alkyl polyglucoside is added into the water; stirring is performed; after the complete dissolution, the temperature of the solution is raised to 40 to 60 DEG C; then, the branched chain fatty alcohol polyoxypropylene polyethenoxy ether is added; stirring is performed for 30 to 40 min; finally, the sodium polyacrylate and the alkyl diphenyl ether disulfonate are added; uniform stirring is performed; then, cooling is performed. The refining agent has good seepage, emulsification and dispersion effects. The efficient low-foam refining agent is applicable to high-temperature boiling and scold rolling piling process; whiteness and the hairy effect of the treated fabric are high; the subsequent processing requirements are met.

The invention relates to a combustor used for a gasifier and started and preheated by adopting combustible gas as fuel. The gasifier combustor is characterized in that a central tube, an inner tube, a middle tube and an outer tube are sequentially arranged at the center of the combustor from inside to outside, and medium channels are formed in the space among the ignition rod and the tubes and includes an ignition fuel gas channel, an ignition oxidant channel, a starting-up fuel gas channel and a starting-up oxidant channel. The gasifier combustor is characterized in that the central tube and the ignition rod are arranged inside the inner tube which is connected with a stable-combustion device; the ignition is arranged in the position capable of avoiding being combusted and eroded by high-temperature flame; the stable-combustion device forms a partial combustion chamber for ignition fuel gas, so that ignition flame can combust reliably, ignition of starting-up fuel gas can be ensured to be successful, and ignition reliability and starting-up flame stability can be guaranteed; shielding gas is replaced during starting up, so that internal and external pressure can be balanced, high-temperature flue gas cannot backflow to the channels of the combustor, and service life of the combustor is prolonged.

The invention discloses a microbial fermentation method for drilling cuttings of an oil and gas field. The method comprises the following steps: (1) screening and stirring drilling cuttings, (2) laying an air supply pipeline, (3) carrying out layered stacking, and (4) carrying out biological ventilation fermentation. The method has the advantages that the drilling cuttings are converted into general solid wastes I from general industrial solid wastes II by the fermentation method, so that the drilling cuttings reach the general industrial solid waste storage and disposal site pollution controlstandard (GB18599-2001) and the modification list standard thereof; the method can be used for waste pit mine treatment, ecological restoration, vegetation soil, roadbed soil manufacturing and the like, so that the purpose of centralized, recycling and harmless treatment of the drilling cuttings is achieved, and the purposes of resource reutilization and ecological environment protection are achieved. The method has the advantages of wide application range, low production cost, simple construction process, good repair effect and the like.

The invention relates to a polycarboxylic acid-type high-water reducing and slump resistant early strength pumping aid which is composed of the following substances: 60-80wt% of polycarboxylic acid ester additive with concentration of 20%, 5-7wt% of polycarboxylate additive with concentration of 20%, 0.5-1.0wt% of sodium thiosulfate, 1-2wt% of sodium gluconate, 1-2wt% of sodium lignin sulfonate, 0.2-0.4wt% of ionic membrane alkali, 0.1-0.2wt% of lauryl sodium sulfate, 0.2-0.4wt% of isothiazolinone type antiseptic and mould proof fungicide and 12-27wt% of deionized water. The preparation method comprises the following steps: chemically combining the polycarboxylic acid ester additive, the polycarboxylate additive and the sodium thiosulfate in water of 40-50 DEG C, and adding sodium gluconate and sodium lignin sulfonate for compounding; cooling to the room temperature, adding the ionic membrane alkali to regulate the pH to 6-8, adding the lauryl sodium sulfate and the isothiazolinone type antiseptic and mould proof fungicide to prepare a product. The product can improve the water-reducing rate, the concrete peaceability and the slump protection at early construction stage and enhance the early strength and long durability of concrete. The product is especially suitable for concrete with early slump protection and early strength demands and self-compaction concrete with large volume and high performance.

The invention provides a heat metering method based on a household radiator heat distribution meter method realization heating system and a heat metering system thereof, relating to the technical field of heat metering. According to the method and the system, a problem that the metering can not be carried out by using an existing heat metering method when a heating user radiator model, installation and use conditions or a radiator area in a total heating meter management range is different from the design is solved. The heat metering method comprises the steps of measuring the total heat supply quantity of the whole heating system, the actual room temperature of each heating user and temperature of supply and return water, determining integrated thermal characteristic parameters bi and Ai of all radiators in each heating user, and determining the heat allocation of each heating user finally. A unit temperature collection device in the heat metering system collects the temperature of supply and return water pipes and indoor temperature of all heating users on a heat supply branch, and the total heating meter and all unit temperature collection units send temperature information to a computer. The metering system is simple, the range of adaptability is wide, the accuracy is better compared with an existing heat metering method, and the method and the system are suitable for a single user horizontal heating system.

The invention discloses a cutter-workpiece contact surface droplet dynamic wetting characteristic detection method and device. It is necessary to detect the dynamic wetting characteristics of the cutting fluid droplets to select the cutting fluid with better performance. The device comprises a micro-droplet preparation device, a cutter block feeding device, a workpiece block, a visual detection system and a rack, wherein the micro-droplet preparation device and the cutter block feeding device are arranged side by side, the micro-droplet preparation device comprises a micro-droplet dipping module and a liquid container, the micro-droplet dipping device is mounted on a bottom plate through a door-shaped micro-droplet preparation support, the micro-droplet dipping module comprises an XZ driving table and a carbon fiber bundle, and the tool block feeding device comprises a tool block, a pressure air cylinder, a second connecting plate and a Y-direction moving platform. The device is advantaged in that an analytic hierarchy process model is established through a droplet wetting angle, the droplet spreading area and the droplet adhesion trace length, and the optimal wettability droplet selection method suitable for different tools and workpiece materials is provided through weight vector calculation.

The invention discloses a quick boarding system used for a port passenger ship. The quick boarding system comprises a lifting platform. Movable gallery bridges are arranged between the lifting platform and a wharf platform; boarding galleries are arranged between the lifting platform and passenger ship cabin doors; the lifting platform is arranged in an embedded mode and fixed by positioning piles or longitudinal slides; a main structure of the lifting platform is composed of concrete buoyancy tanks or steel buoyancy tanks; the movable gallery bridges are hinged to the wharf platform and erected on the lifting platform through a left limiting slide support and a right limiting slide support; each boarding gallery comprises multiple telescopic joints; every two adjacent telescopic joints are universally and rotatably connected; one end of each boarding gallery is fixed to the lifting platform and the other end of the boarding gallery is connected with the corresponding cabin door; each boarding gallery and the corresponding cabin door are connected through a cable; the telescopic joints are fixed to the corresponding cables; the cables serve as the fixing cables of the passenger ship; full-closed structures are arranged between the movable gallery bridges and the lifting platform and between the lifting platform and the boarding galleries. In the water areas such as inland rivers, coastal areas and lakes, when a ship fluctuates along with the water lever and fluctuates and swings due to the effect of waves, the quick boarding system can flexibly adapt, passengers get on and off the ship comfortably, and reliable berthing is kept.

The invention discloses a plane fixture and method for machining a box fault isolator. The plane fixture comprises a fixture bottom plate (4-1), a positioning and clamping mechanism (6), an indexing mechanism (8), a transmission mechanism (7) and a profiling mechanism (9), one portion of the positioning and clamping mechanism (6) is mounted at the right end of the fixture bottom plate (4-1), the other portion of the positioning and clamping mechanism (6) is mounted on the right side of the indexing mechanism (8) and corresponds to the portion mounted at the right end of the fixture bottom plate (4-1), the indexing mechanism (8) is mounted at the left end of the fixture bottom plate (4-1), the transmission mechanism (7) is positioned between the positioning and clamping mechanism (6) and the indexing mechanism (8) and mounted on the fixture bottom plate (4-1), and the profiling mechanism (9) is positioned outside the left side of the indexing mechanism (8). The method includes the steps: turning box fault isolation rings on a horizontal lathe; planing box fault isolation notches in a planer by the aid of the plane fixture. The plane fixture and method for machining the box fault isolator have the advantages that positioning is accurate, and quality is ensured.

The invention discloses a multipath centralized monitoring meter which comprises a power supply unit, a GPRS (General Packet Radio Service) monitoring unit, an RS485 monitoring unit, an ESAM (Embedded Secure Access Module) monitoring unit and a carrier monitoring unit. Concentrated design for a circuit of a multipath collecting unit is adopted by the multipath centralized monitoring meter; input and output interfaces are unified; the switching and coordination of the concentrator in a power grid system and the signals, such as a TTL signal, a RS232 signal, a RS485 signal and the like of the meter, are realized; and the transmission for different signals is realized. A general chip in the market is taken as the chip of the multipath centralized monitoring meter and a male mould is taken as an outer shell, so that the cost is low; the concentration degree is high, so that a user is convenient to wire and mount; all interfaces are subjected to isolating treatment, so that the tested equipment is effectively protected and the use is safe; and the system is stable, the function is strong and the application scope is wide. The invention effectively solves the problems that different monitors are configured for different signals, the wire is complex, the potential safety hazards are more, and the like. An important firm basis is established for realizing a 'full-collecting, full-covering and full-fee-control' intelligent electric usage information collecting system for a power grid.

The invention discloses an installation device and method for a corrugated steel web. The installation device is used for installing the corrugated steel web in a bridge in a mountainous area and comprises a tower crane, and a transport vehicle and a hoisting assembly; the tower crane is installed on a pier of the bridge, the hoisting assembly is arranged on a hanging basket located at the end of the bridge, the transport vehicle is arranged on the bridge deck of the bridge and moves back and forth between the tower crane and the hanging basket to convey the corrugated steel web. According to the installation device and method for the corrugated steel web, by utilizing the devices of the tower crane, the horizontal transport vehicle located on the bridge deck, the hoisting assembly and the like, the corrugated steel web is not limited by topographies of gorges and the like, the corrugated steel web can be installed on the right position conveniently and smoothly, and therefore the application range of a long span corrugated steel web continuous box bridge is wider.

The invention discloses environment-friendly pollution-free plastic waste crushing equipment which comprises a housing. The left upper portion of the housing is provided with a plastic inlet. The inclined portion of the left lower portion of the housing is provided with a first discharge outlet, and a storage tank is arranged below the first discharge outlet in a matched mode. The shell is internally divided into two parts, the left area is a preprocessing part and the right area is a crushing part. The lower end of the plastic inlet is connected with the preprocessing part, and the right end of the preprocessing part is connected with the left end of the crushing part through a scraper conveyor. The preprocessing part comprises a high-magnetic electromagnet device, a lifter, a soaking pool, a water inlet, a water outlet, a conveyor belt and a hammer grinder. The crushing part comprises a rotary crusher. The environment-friendly pollution-free plastic waste crushing equipment provided by the invention can crush plastics of different hardnesses, is wide in application range, simple in structure and compact in layout, and has the advantages of stable operation, low energy consumption, high plastic crushing efficiency, low machining cost and the like.

The invention relates to a polycarboxylic acid high-slump-retaining zero-bleeding high-performance water reducing agent. The polycarboxylic acid high-slump-retaining zero-bleeding high-performance water reducing agent comprises the following components in percentage by weight: 60.0 to 80.0 percent of polycarboxylic acid ester additive with solid content of 20 percent, 15.0 to 35.0 percent of polycarboxylic acid ether additive with solid content of 20 percent, 1.0 to 2.5 percent of sodium gluconate (polyhydroxy carboxylate), 0.5 to 1.5 percent of sodium lignin sulfonate (lignosulfonate), 0.2 to 0.5 percent of ionic membrane caustic soda, 0.2 to 0.5 percent of isothiazolinone antiseptic and mould proof bactericide, and 1.0 to 3.0 percent of deionized water; a preparation method comprises the following steps of: performing chemical combination on the polycarboxylic acid ester additive, the polycarboxylic acid ether additive, and the deionized water in the ratio at the temperature of between 30 and 50 DEG C; keeping the temperature, and adding polyhydroxy carboxylate, lignosulfonate and other exciting agents to form the synthetic product with a specific structure; and cooling to normal temperature, adding the ionic membrane caustic soda to regulate the pH value, and adding the isothiazolinone antiseptic and mould proof bactericide to form the final product. The polycarboxylic acid high slump retaining zero-bleeding high-performance water reducing agent has low doped content, high water reducing ratio, wide cement application range, and high slump retaining capacity, is zero-bleeding and is suitable for cement with different labels.

The invention discloses a method for extracting L-lysine from a molasses fermentation liquor. The method is characterized by comprising solid-liquid separation, film filtration, solid recovery, chemical extraction and reverse extraction. The method specifically comprises the following steps: removing solid substances such as thallus and colloid out of molasses fermentation liquor, and then fully mixing with an extracting solution; oscillating at room temperature, extracting to reach balance, and then separating the extracting solution from raffinate; carrying out reverse extraction on the raffinate by using hydrochloric acid and then recovering an organic solvent; directly recovering the raffinate as a component of a fermentation medium, wherein filter residues separated from the fermentation liquor can be used as a substrate for methane fermentation. L-lysine is extracted at room temperature, so that the distribution ratio of high-concentration L-lysine is increased. A molasses pigment is completely separated from L-lysine, so that subsequent purification and rectification of L-lysine are facilitated. An organic solvent for extracting is completely recovered, and all the raffinate is recovered as a culture medium component, so that the process is environment-friendly and free of pollutant emission; the production cost is effectively reduced; the economical efficiency is improved; and good social benefits can also be brought about.

The invention discloses a water source heat pump system. A first level evaporator and a second level evaporator are arranged between a heat source side water inlet and a heat source side water outlet,a first level condenser and a second level condenser are arranged between a user side water inlet and a user side water outlet, and a first compressor is communicated with a first expansion valve through a pipeline to form a first heat pump circulatory system between the first level evaporator and the second level condenser; a second compressor is communicated with a second expansion valve through a pipeline to form a second heat pump circulatory system between the second level evaporator and the first level condenser. Compared with a single circulating heat pump system, the water source heatpump system is high in energy efficiency, capable of achieving running of a heat source side with a big temperature difference more easily and reducing the energy consumption of an transmission and distribution system, and wide in application range of high-temperature heat sources.