449results about How to "Play a regulatory role" patented technology

The invention relates to a blast furnace gas dry cloth-bag dust-removing device and technology, belonging to the metallurgy environmental protection dust removing technical field. The blast furnace gas dry cloth-bag dust-removing device and technology mainly comprise devices such as a dust-removing filtering device, an ash-clearing device, a dust-unloading and transporting device, an automatic control device, a gas dispersion device, and technologies such as large filtering wind speed, nitrogen or pure coal gas pulse current back-blowing and ash-clearing, pneumatic unloading and transporting ash and backup for nitrogen and pure coal gas, wherein, coal gas is filtered and purified by a filtering bag, the ash is back-blown by nitrogen or pure coal gas pulse current so as to control the resistance of the dust remover, thereby the filtering bag has the ideal dust removing effect, which is a dry dust-removing purification system having the advantages of high dust-removing efficiency, low dust content of the pure coal gas, low energy consumption of the dust-removing system, high heat efficiency of the pure coal gas and high automation degree; the filtering bag with over-long specification and a biserial pulse back-blowing system are adopted to meet the requirements of the dust-removing system upon a large filtering area and an excellent back-blowing efficiency; a crude gas bleeding valve group is increased to ensure that the coal gas with overproof temperature can not enter to a case of the dust remover, which protects the cloth-bag, controls effectively the high furnace roof pressure and operates the system more safer; the whole course waterless operation is realized so as to prevent the possibility of water containing coal gas dust to paste the filtering bag, thereby having the characteristics of less occupied area, short technology process, strong ability of clearing the ash, simple equipment and low labor intensity.

The invention relates to a diphasic porous three-dimensional cell culture scaffold which is formed by a coarse fiber phase and a fine fiber phase which are entirely different in diameter. The coarse fiber phase is larger than cultured cells in size while the fine fiber phase is smaller than the cultured cells in size, the coarse fiber phase comprises multilayer coarse fiber structures, each two adjacent coarse fiber structures are arranged according to a certain angle, and the fine fiber phase is individually combined on one side or multiple sides of the coarse fiber phase and is averagely or intensively distributed in hole structures of the three-dimensional cell culture scaffold formed by the coarse fiber phase. In the diphasic porous three-dimensional cell culture scaffold, the fine fiber phase is much smaller than the cells in diameter, so that the cells can attach to nanofibers quite easily, and differentiation of stem cells on the nanofibers can be effectively promoted. Therefore, by means of adding the fine fibers on the three-dimensional cell culture scaffold, cell vaccination efficiency can be improved, and the cells grown on the fine fibers, particularly growth and differentiation of the stem cells, can be promoted and regulated.

The invention discloses a fertilizer with biological ferment and a preparation method and a use method thereof. The fertilizer includes activator and nutrient, the activator is dry powder preparation of protein raw materials, water-soluble nitrogen, water-soluble phosphorus, water-soluble kalium and strain mixed fermentation products, and the nutrient is dry powder preparation of amino acid type raw materials, mineral composition type raw materials, trace element type raw materials and strain mixed fermentation products. The fertilizer can be applied by the step of primarily adding the activator into a simple fermenting container for fermentation and adding the nutrient for fermentation later. The invention can be suitable for various types of crops, can obtain the satisfactory effect after the application and has 10 times of the application effect of the traditional biological ferment fertilizer, and is beneficial to the massive popularization because the dry powder preparations with two components are suitable to long distance transportation and operations of post dry powder preparation mixing and fermentation are simple and easy.

The invention discloses a regulation and control method for improving diversity of nanocarbon to soil nematodes. The method comprises the steps of adopting plastic flowerpots of which the lengths are 25cm and the diameters are 2cm, cleaning and drying gauzes, fixing each gauze which is cut to a round shape with a proper size at the bottom of each flowerpot, and weighing matrix garden soil of 2kg in each container, wherein modified nanocarbon of which the weight is 1-5% that of the matrix garden soil is added into the garden soil respectively; respectively sowing festuca arundinacea seeds of 4.5g respectively; regularly quantitatively watering in the experiment period every day to meet the plant growth demands, culturing the plants in a laboratory, wherein during the cultivation period, the temperature is 25-34 DEG C, the relative humidity is 31-48%, the lighting condition is natural incident light, the experiment time is 120 days, the nematodes in the soil are separated to identify the type and number of the nematodes as the background data of the nematodes, and the type and number of the nematodes are processed after separation and identification after 4 months.

The invention discloses a soft hand feel coating which comprises expandable microsphere pulp, styrene-acrylate emulsion, dispersant, wetting agent, film-forming additive, anti-freezing agent, defoaming agent, thickener, anti-mildew agent, preservative, titanium dioxide, kaolin, triple(concentrated) superphosphate and water, wherein, the expandable microsphere pulp consists of 10%-15% of expandable microspheres and 85%-90% of water by weight percent. The process comprises the steps of pre-mixing, grinding, dispersing, adding the emulsion, adding the additives and adding the expandable microsphere pulp. The expandable microspheres added in the coating change the structure and the texture of the surface of a paint film and soften the touch; additionally, the expandable microspheres in the paint film improve the porosity of the paint film and reduce the spread-ability of heat and sound in the paint film, pores of the paint film can play the regulating role on water in the air, the water is absorbed when the humidity is high, and the water is released when the humidity is low.

The invention relates to a cylindrical accessory machining method and system for a metal mold. The method comprises the steps that firstly, surface induction quenching pretreatment is carried out on a blank of a roughly-machined cylindrical accessory, and a hardening layer is formed on the surface of the blank; secondly, the pulse current is exerted on the blank, pulse current tempering treatment is carried out on the hardening layer on the surface of the blank, and meanwhile turning machining is carried out to form a semi-finished accessory; and thirdly, the semi-finished accessory rotates, the pulse current is further exerted on the semi-finished product, electroplastic treatment is carried out on the surface layer of the semi-finished accessory, and ultrasonic peening rolling is carried out on the surface of the semi-finished product through an ultrasonic rolling device. The system is formed through refitting on a lathe and is suitable for machining guide columns and various metal rotation body accessories through the method. Compared with a traditional technology, according to the method, the overall mechanical performance, the surface quality and the surface smoothness of the surface layers of the guide columns can be obviously improved, the production procedure is greatly simplified, the production efficiency is improved, and the production cost is reduced.

The invention relates to a thermoplastic composite material building template that comprises 8mm-30mm long glass fiber added in the thermoplastic, and invents a preparation process of the building template as well as special equipment used for implementing the preparation process, thus ensuring that the 8mm-30mm long glass fiber in the thermoplastic composite material building template accounts for 5 percent-60 percent of the weight of the building template. In the building template provided by the invention, the 8mm-30mm long glass fiber accounts for 5 percent-60 percent of the weight of the template, which obviously improves the rigidity / mass ratio and resistance to creep, as well as the stretching, bending and impact properties of the template. Simultaneously, the adoption of thermoplastic leads the building template to be capable of being recovered and renewedly manufactured and processed in damage or in need of other shapes, thus being more environment-friendly and saving more materials. Finally, the addition of inorganic filler can also improve the wearing resistance of the surface of the building template as well as the reuse rate of the template, thus reducing the cost.

The invention discloses a self-adaptive cruise control system and a self-adaptive cruise control system method for an electric automobile based on car networking. The system as shown in a figure comprises a car networking device for cars, a car networking road device and an electric automobile self-adaptive cruise controller, wherein the car networking device for cars is arranged in the electric automobile to acquire information of external roads and other vehicles by means of wireless communication; the car networking road device is arranged on the side of a road, is connected to a cloud server and is wirelessly connected to the car networking device for cars and transmits the information; and the electric automobile self-adaptive cruise controller is connected to the car networking device for cars to receive information acquired outside and control the self-adaptive cruise function of the electric automobile. According to the system and method, the transmission range and quantity ofinformation of traffic information are expanded, and wireless transmission delay is reduced. The invention also provides the self-adaptive cruise control method for the electric automobile based on car networking. A dynamic planing strategy is formulated to update the brake strategy of the automobile in real time according to the velocity of the front automobile by following the velocity of the front automobile by means of regenerative braking deceleration, so that the regenerative braking effect of the electric automobile is optimum.

The invention discloses a block chain private data protection method and device, equipment and a medium. The method comprises the steps that two transaction parties on a block chain carry out transaction to acquire generated transaction information, generate symmetric encryption keys, encrypt private data through the secret key, encrypt the symmetric encryption secret key through a public key of an access end of the private data, package and upload the encrypted private data and the symmetric encryption secret key, and decrypt the private data through respective private keys of the access endto obtain the private data when the private data needs to be checked. Wherein the access end comprises a transaction end and a supervision end, the method can play a role in protecting private data, and meanwhile, the supervision end can conveniently supervise the private data.

A heavy packaging composite film is characterized by comprising an outer layer, a core layer and an inner layer. The formula of components of the heavy packaging composite film by weight includes that the ratio of the outer layer to the core layer to the inner layer is 5-20wt%:60-90wt%:5-20wt%, preferably, the ratio is 5-10wt%:80-90wt%:5-10wt%, and more preferably, the ratio is 10wt%:80wt%:10wt%.The outer layer is made of metallocene linear polyethylene and low-density polyethylene, the core layer is made of EVA (ethylene vinyl acetate) and low-density polyethylene, and the inner layer is made of medium-density polyethylene and low-density polyethylene. By means of coordination of the metallocene linear polyethylene of the outer layer, the EVA of the core layer and the low-density polyethylene of the inner layer, the three-layer heavy packaging composite film is ensured to simultaneously have better puncture resistance and tensile strength.

The invention relates to a preparation method of a nontoxic cotton dreg animal feed, and aims to provide a preparation method of a nontoxic cotton dreg animal feed, which can be used for solving the problem of detoxication of cotton dregs and increasing nutritional substances in cotton dregs. According to technical key points, the method comprises the following steps of: (1) preparing a primary strain; (2) preparing a secondary strain; (3) preparing a fermentation substrate; and (4) inoculating the fermentation substrate, adjusting the water content to 45-50 percent, mixing uniformly, fermenting for 3-6 days, and drying. The nontoxic cotton dreg animal feed can be taken as a feed for livestock and aquatic livestock, and belongs to the technical field of preparation of feeds.

The invention relates to the technical field of preparation of double-metal composite boards, and specifically relates to a rolling method for improving combination intensity of a double-metal composite boards. The rolling method for improving the combination intensity of the double-metal composite board aims at solving the technical problem of low combination intensity of a double-metal composition board prepared by an existing rolling method. According to the technical scheme, the method is characterized in that a base plate and the composite board are vertically subjected to wave flat rolling and then are subjected to flat rolling. Compared with a traditional rolling method, the method has the advantages that two double-metal sheets of different types are subjected to non-uniform local intensity deformation in three times in the abovementioned manner, thus broken, fresh and activated metal atoms in an oxidizing layer of a combination interface are extremely promoted to be extruded out, and as a result, the diffusion probability of two metal atoms is increased; the metallurgical bonding scope of the two metals is expanded; and the combination intensity is effectively improved.

The invention discloses a movable radiation heat exchange device. The movable radiation heat exchange device comprises a compressor (1), a first heat exchanger (2) and a second heat exchanger (3) which are sequentially connected and located on the same space, and further comprises an energy storage device (4) corresponding to the first heat exchanger (2) and carrying out heat exchange with the first heat exchanger (2). According to the movable radiation heat exchange device, the problem that in the prior art, the effect becomes poorer and poorer when a movable air conditioner conducts refrigeration or heating for a long time can be solved.

The invention belongs to the field of preparation of SiC ceramic-based parts, and discloses a preparation method of SiC fiber-reinforced SiC ceramic-based parts and a product. The preparation method comprises the following steps: (a) mixing a thermoplastic phenolic resin, silica powder and silicon carbide fibers to form a mixed solution; (b) treating the mixed solution to obtain composite powder;performing incremental material manufacturing on the composite powder to form a primary body, and performing pyrolysis carbonization on the primary body to obtain preform; (c) infiltrating the preformin a thermosetting phenolic resin solution, curing, and performing pyrolysis carbonization again to form a novel preform; (d) repeating the step (c) again and again to obtain the final preform, reacting and sintering the final preform, reacting carbon in the preform with silicon to produce silicon carbide, thereby obtaining the SiC ceramic-based parts containing silicon carbide fibers. Accordingto the preparation method disclosed by the invention, the SiC fiber-reinforced SiC ceramic-based parts of complicated structures are obtained by near-net forming, the density is high, and the bindingforce is strong.

A liftable external awning blind with double control arms belongs to the field of external sunshade equipment of buildings, and particularly relates to a movable external awning blind. The liftable external awning blind with the double control arms is characterized in that fixing adjusting devices are vertically mounted at two ends of each blade (4), a control arm (11) and a torsion beam (7) are connected in an encircled manner to form each fixing adjusting device which is a parallelogram frame, two ends of each blade (4) are H-shaped, the blades (4) are horizontally mounted between the two fixing adjusting devices via the H-shaped ends of the blades (4) and T-shaped grooves (5) arranged on the inner sides of the control arms (11), and one side of each fixing adjusting device is mounted outside a window of a building via a center shaft (10). The liftable external awning blind with the double control arms has the advantages of convenience in lifting and falling, high wind resistance and stability and flexibility in adjustment, is applicable to external sunshade of a plurality of buildings, and can guarantee a good sunshade effect on the premise of not affecting transmission of light.

The diet fiber is produced with bagasse or head chop as main material and other agricultural product as fittings and through fermenting treatment with edible fungi strain. The production process includes crushing bagasse or head chop; mixing with crushed wheat bran, soybean residue, trace element and water; bagging the wet material in heat resisting plastic bag and sterilizing in sterilizing pot; inoculating edible fungi strain to the sterilized culture medium under bacteria-free condition and culturing under certain condition for 35-45 days; drying and crushing to 100 mesh to obtain the product. The diet fiber has the physiological functions of lowering blood fat, lowering blood sugar, relaxing the bowels, slimming, etc. and has nutritious components essential for human body. The present invention has simple production process and high product quality.

The invention discloses a cloud platform system for monitoring and managing production process data, and belongs to the field of Internet data acquisition. The cloud platform system for monitoring andmanaging production process data is a manufacturing industry intelligent application product project based on Internet +. A cloud platform, a mobile internet, a WeChat applet and a two-dimensional code are used for manufacturing an intelligent manufacturing cloud platform product conforming to small and medium-sized enterprises; a computer and a mobile phone are mainly used for operation. The whole production process can be integrally controlled by utilizing the cloud platform system; departments serving as different roles are tightly connected; therefore, the functions of the departments canbe performed respectively; compared with the prior art in which different production departments are separated from each other, the system has the avantages that the whole production process is associated, so that the whole production process is clearer, and the system has originality in domestic similar products, is easy to popularize and apply, helps enterprises to quickly apply a cloud platform system, and realizes enterprise information digitization and transformation upgrading.

The invention relates to a preparation method of eggembryosin. According to the invention, chicken fertilized eggs are selected and are subjected to surface sterilization; eggshells, yolks and embryoid bodies are removed; rest substances which are chick embryo components are frozen and crushed; pre-cooled normal saline is added for pulping; the obtained material is filtered by using raw-silk cloth with a specification of 20 meshes and a filter with a specification of 3mum; and an obtained filtrate is an eggembryosin solution. The eggembryosin comprises various biologically active substances such as amino acids, small-molecular peptides, growth regulatory factors, nucleic acid derivatives, and the like. The eggembryosin has relatively high nutritional value, beautification value and medicinal value. With the method, high-bioactivity eggembryosin large-scale extraction can be realized easily and fast.

The present invention discloses an external temperature field device for assisting the growth of two-dimensional black phosphorus crystals (hereinafter referred to as "external temperature field device"). The device includes a power supply, a switching power supply, a relay, a temperature control module, a thermocouple, and a heating wire. The device can control the heating of the heating wire andperform temperature programming and cooling by setting parameters of the temperature control module, and an external temperature field generated by the device can well assist the growth of the blackphosphorus crystals. The invention also discloses a using method and an application of the device. Compared with conventional tubular furnace heating modes without the "external warm field device", the method of the invention has the advantages of compensation of the temperature loss in the furnace, improvement of the distribution uniformity of the temperature field in the furnace, control of thetemperature field distribution and temperature change in a specific region, and facilitation of accurate control of the volatilization and transportation process of reaction raw materials, the nucleation and growth process of black the phosphorus crystals and the generation process of byproducts.

The invention provides a crude oil water-content metering analysis system which includes a sampling controller, a sampler, a sample barrel and a water-content analyzer, the sampler is connected to the sampling controller and a pipeline, is controlled by the sampling controller to take out samples for a plurality times from the pipeline, and conveys the samples to the sample barrel, the sample barrel is connected to the sampler, and is used for the storage of the samples, the water-content analyzer is connected to the sample barrel, and is used for water-content analysis of the samples in the sample barrel to detect the water content of the samples. The crude oil water-content metering analysis system has the advantages of the plurality times of sampling, multi-layer sampling, limit of a liquid to flow back to the pipeline, and outlet antisplash function during the sampling, and also has the advantages of short measuring time, high measuring precision, whole sample analysis, simple operation, reducing of energy consumption and air pollution and the like during the sample analysis.

The invention discloses a preparation method of a humic acid suspended liquid fertilizer and belongs to the technical field of fertilizer preparation. The preparation method disclosed by the inventionhas the benefits that mixed suspended sludge liquid of sweet potato starch wastewater and secondary sedimentation activated sludge is used as a raw material and is changed from wastes into valuablesthrough pyrolysis; in addition, sodium humate in the humic acid fertilizer and a mixed carboxylic acid monomer in a liquefaction dispersant are subjected to graft copolymerization reaction, the non-polar end is combined with the hydrophobic surfaces of humic acid solid particles, and a polar carboxylic group is outward, so that the liquefaction dispersant is prevented from producing the hard precipitation in the liquid fertilizer; in the invention, glycine is added as a nitrogen element carrier, so that nitrogen requirements can be provided for crops; carboxyl groups in amino acids have chelating abilities and can also play a role in regulating the growth of the crops; side reaction can be generated between acrylic acids in the liquefaction dispersant in the liquid fertilizer and maleic anhydride to form acrylate, so that the liquid fertilizer is semi-oily and is more easily adhered onto the leaf surfaces of the crops, the transpiration is effectively inhibited, and the absorption efficiency of nutrient elements by the crops is improved, therefore, the application prospect is wide.

The invention relates to a gridding atmospheric pollution emergency mobile monitoring system. The system comprises a plurality of fixed monitoring systems and a plurality of mobile monitoring systems,the mobile monitoring systems comprise unmanned aerial vehicles, each unmanned aerial vehicle is in communication connection with a ground control station, and each unmanned aerial vehicle is provided with an environment monitoring sensor, a video monitoring terminal, a communication module, an air megaphone module and a data transmission module; the ground control station is in communication connection with a cloud platform, and the cloud platform is in communication connection with a mobile terminal, a large control screen and a command center. Gridding emergency mobile monitoring is carried out by utilizing an unmanned aerial vehicle group, a skynet for monitoring air can be formed, acquired data and data acquired by an existing fixed monitoring station can be superposed, compared andanalyzed to generate a space-time dynamic trend chart, a pollution source is supervised to a great extent, early warning and analysis can be performed, and reasonable and effective emergency plans andresponse measures can be taken in time.

The invention discloses a parking supply-demand regulate and control coefficient based parking facility supply level prediction method. When in urban parking facility planning, according to parking supply-demand regulate and control coefficients of different parking policy zones, the supply levels of the parking facilities of different middle traffic zones are determined. The method specifically comprises following steps of proposing parking supply-demand regulate and control coefficients according to the parking policy zones; computing parking facility total demand level of a planning area; computing the parking facility demand level of each middle traffic zone; balancing the parking facility total demand-supply level in the planning area layer according to the parking supply-demand regulate and control coefficients, and determining the parking facility supply level of each middle traffic zone; and computing the supply level of different types of parking facilities of different middle traffic zones. Through adoption of the method, the purposes of land utilization and traffic flow space-time distribution regulate and control by the parking facilities can be realized. The method is simple and practical, and has strong operability and effectiveness.

The invention relates to a collecting and monitoring system for chemical industrial park enterprise wastewater. The collecting and monitoring system comprises a wastewater collecting part and a real-time online monitoring part, wherein the wastewater collecting part includes a wastewater collection pool, and collection is carried out by a conveying mode of one pipe for one enterprise, and the real-time online monitoring part performs online monitoring and control through an online monitoring instrument, an electromagnetic valve and a PLC control system. The system provided by the invention solves the problems of great fluctuation of quality and quantity of inflow water received by a sewage treatment plant in a chemical industry concentrated area and difficult control, is also convenient for implementation of source searching according to pipes and dynamic monitoring, thereby strengthening management to sewage discharge of all the enterprises in the chemical industrial park and ensuring the sewage treatment plant source water quality.

The invention discloses multi-flavor instant nutritional crispy food and a preparation method thereof. Raw materials of the instant food are rich in variety and comprise fungi, vegetables, fruits and beans. The method comprises the steps of harvesting, sorting material, refrigerating, washing, refining, flavoring, cooking, carrying out quick freezing, frying, deoiling, cooling, checking and packaging and the like, thereby finally preparing the multi-flavor instant nutritional crispy food. According to the multi-flavor instant nutritional crispy food and the preparation method thereof, the raw materials are dehydrated and dried by adopting a low-temperature vacuum frying process, and the whole frying process is carried out under the condition of vacuum low temperature, so that free moisture and bound moisture in the raw materials will be subjected to sudden gasification, swelling, evaporation and blowoff, rapid drying and dehydrating can be achieved, and meanwhile, nutrients in the raw materials are reserved to the maximum; in addition, the multi-flavor instant nutritional crispy food disclosed by the invention is free of any food additive and is healthy food applicable to various consumer groups.

The invention discloses a manufacturing method of electrolytic copper foil for a lithium ion secondary battery, and belongs to the technical field of the electrolytic copper foil. The manufacturing method of the electrolytic copper foil for the lithium ion secondary battery is used for solving the problem that an existing manufacturing method of the electrolytic copper foil cannot achieve copper foil property adjustment through simple adjustment of addition agents. The manufacturing method comprises the steps that a main electrolytic solution is manufactured; an electrolytic solution is manufactured; raw foil is manufactured through electrolysis; and anti-oxidation treatment is conducted. According to the manufacturing method of the electrolytic copper foil for the lithium ion secondary battery, the ratio of the four addition agents is adjusted, and therefore the growth process of electro-deposition crystal grains can be flexibly controlled, and the purpose that the electrolytic copperfoil with different tensile strength values is manufactured can be achieved. The selection of the range of the content of the addition agents follows the principle that physical property parameters and appearance indexes are unified and controlled, and the copper foil which has the advantages that the control is easy, and the performance meets the requirement can be manufactured only within the control range of the manufacturing method. By means of the control in the way, the purpose that adjustment of the tensile strength of the electrolytic copper foil can be achieved through the control over the range of the viscosity of hydroxyethyl cellulose can be easily achieved.

The invention discloses a Chinese medicament additive for improving the liver function of a Clarias lazera. The additive comprises the following Chinese medicaments in percentage by weight: 15 percent of astragalus, 25 percent of white paeony root, 20 percent of rhubarb, 15 percent of liquoric root, 15 percent of Himalayan teasel root and 10 percent of gardenia. The Chinese medicaments are dried crude medicaments and are mixed together and crushed into particles having a particle size by which the particles can pass through a 30-mesh standard screen. A method for using the Chinese medicament additive for improving the liver function of the Clarias lazera comprises the following steps of: mixing the prepared Chinese herbal medicament powder into a compound feed in a proportion of 5 percent; preparing the mixture into a granulated feed; and performing mixed feeding in a weight ratio of the compound feed to fresh chicken and duck internal organs of 1:5. The Chinese medicament additive has the following advantages that: the average value of glutamic alanine amino transferase of 5 percent of feed-fed experimental groups using the Chinese medicament additive for improving the liver function of the Clarias lazera has a stationary trend, while the glutamic alanine amino transferase of the groups which do not use the medicament additive increases exponentially, so the Chinese herbal medicament additive has certain repairing function to liver injuries.

The invention discloses an electric spark wire cutting machine. According to the technical scheme, the electric spark wire cutting machine is characterized by comprising a workpiece installing base for installing a workpiece, a base, a sliding base which is in horizontal sliding connection with the base, and a cutting wire arranged on the sliding base and used for cutting the workpiece. The sliding base is provided with a drive mechanism for driving a cutting wire to move and achieving cutting of the workpiece, and a bevel cutting mechanism for enabling the cutting wire to be in the inclined state and achieving bevel cutting. The purpose that the cutting wire is inclined within the space range and the workpeice is cut obliquely is achieved. Meanwhile, the problem that equipment is abradeddue to the fact that the cutting wire is pulled hard is effectively avoided.

The invention relates to a sodium alginate-hydroxyapatite hybridization nano particle. The sodium alginate-hydroxyapatite hybridization nano particle comprises, by mass, 65%-99.5% of hydroxyapatite and 0.5%-35% of sodium alginate, the sodium alginate-hydroxyapatite hybridization nano particle is in a needle shape, the length of the needle ranges from 10 nm to 70 nm, and the width of the needle ranges from 3 nm to 20 nm. A preparing method includes the steps that alginic acid polysaccharide is dissolved into deionized water to obtain an alginic acid polysaccharide solution with the mass concentration ranging from 0.2% to 0.8%, a calcium salt aqueous solution and a phosphate aqueous solution are added into alginic acid polysaccharide solution under stirring, and the adding amount of the calcium salt aqueous solution and the phosphate aqueous solution is determined with the molar ratio of Ca / P in a reaction system being (1-2.0):1 as a limit; and in addition, the volume ratio of the calcium salt aqueous solution to the phosphate aqueous solution is 1:(20-40), then the pH value of the reaction system is adjusted to be 10-12, stirring is stopped, standing ageing is carried out for at least 5 days, and a reaction product is collected after standing ageing is carried out and is dried. The sodium alginate-hydroxyapatite hybridization nano particle is particularly suitable for serving as an anti-cancer drug carrier.