49results about How to "Make up for efficiency" patented technology

The present invention relates to a diabetic retinopathy sign detection method and device. The method comprises: receiving a fundus image to be detected; using a convolutional neural network (CNN) model to perform processing of the fundus image to be detected, and obtaining lesion area samples corresponding to the fundus image to be detected; according to the lesion area samples, constructing SIFT (Scale-Invariant Feature Transform) feature descriptors corresponding to the fundus image to be detected; and according to the SIFT feature descriptors, using an SVM (Support Vector Machine) classifier to determine the lesion type of the fundus image to be detected. The CNN model is employed to perform rough classification of the diabetic retinopathy to five out a lesion area, the SVM classifier is employed to perform fine classification of the lesion type of the lesion area to reduce interference generated by difference between the data size and the data when the neural network is directly configured to perform lesion classification and improve the classification precision.

The invention provides a correctness verifying method of a cache consistency protocol. After a computer enters an operating system, the complexity of a core and the application of the operating system is higher; the action of a processor is not easy to control accurately; therefore, in order to keep verification correctness, a verifying program for the cache consistency protocol is necessary to embed in a systematic procedure; the program is embedded in a BIOS (basic input/output system) code; after the initialization of a memory subsystem is completed at the initialization initial stage of the system, the verifying program is started to be executed; the verifying program needs to be capable of accurately controlling actions of each processor of the system, supports a user to select a verification item to be particularly executed, and feeds back a verification result to the user; by using the method, the verification of the correctness of the cache consistency protocol is realized at a system level; all application scenes of a real system can be completely covered; the disadvantages that a conventional verifying method based on an analog way is low in efficiency and poor in verification coverage rate are made up; the design period and the verifying period of an inter-domain cache consistency chip of the processor can be shortened; the one-time taping-out mission success rate of the chip can be guaranteed effectively; and therefore, the correctness verifying method has an extremely wide development prospect and an extremely high technical value.

The purpose of the invention is to provide a dual-shaft ship hybrid power system with a fuel cell. The system comprises a diesel engine, a gas machine, a fuel cell and a storage battery; the gas machine is connected to a first reversible shaft motor; the first reversible shaft motor is connected with a gear case; the diesel engine is connected with a second reversible shaft motor; the second reversible shaft motor is connected with the gear case; the gear case is connected with two propellers; a liquefied natural gas tank is connected with a gas supply device; the gas supply device is connected with the gas machine and the fuel cell; the fuel cell, the storage battery, a ship load, an inverter and a rectifier are all electrically connected with a distributing board; the inverter is connected to the first reversible shaft motor and the second reversible shaft motor through a frequency converter, and the first reversible shaft motor and the second reversible shaft motor are electricallyconnected to the rectifier. The invention can meet the requirements of the ship under various environments and working conditions, further improve the operating efficiency of the gas machine, the diesel engine and the reversible shaft motor, and effectively reduce the fuel consumption and emission of the engine.

The invention provides a method for preparing polyfluortetraethylene dispersion resin. In the method, ammonium persulfate-peroxysuccinic acid is taken as a composite initiator, and polymerized tetrafluoroethylene is dispersed in an aqueous medium; and the ratio of the ammonium persulfate to the peroxysuccinic acid in the composite initiator is 1:(10-200). By adopting the preparation method, under the synergic action of the ammonium persulfate-peroxysuccinic acid serving as the composite initiator, the decomposition rate of the initiator is effectively controlled and compensated, the number of produced free radicals is balanced, chain initiation speed and chain growth speed can be increased, a tetrafluoroethylene polymer with a high molecular weight and low molecular weight dispersity can be obtained, and the obtained resin has high pushing and extruding performance; the reaction speed is temperate, a small quantity of emulsion breaking materials is used in polymerization fluid, and the inner wall of a reaction kettle is clean after discharging at the end of a reaction; and a cleaning process is not required during aftertreatment, so that labor force and hydroelectric resources are saved, cost is saved, product performance is improved, and situations such as yellowing, cracking and the like of an extruding pipe do not exist.

The invention belongs to the technical field of air pollution control and particularly relates to a load type low-temperature anti-ammonium bisulfate SCR denitration catalyst as well as a preparation method and application thereof. The anti-ammonium bisulfate SCR denitration catalyst has a general formula of MxV1-xOPO4/TiO2, wherein M is Mo or W; the sum of molar numbers of M and V is 1; and an active component is 1-10 parts by weight, and a carrier is 90-99 parts by weight. The denitration catalyst is prepared by adopting an impregnation method, so that the defects of high living temperature, narrower temperature window, low low-temperature denitrification efficiency, weak resistance to sulfur and water, and the like of traditional V2O5-WO3/TiO2 are effectively overcome. The catalyst provided by the invention can tolerate nitrogen oxide flue gas containing SO2 of 0-3000 mg/m<3> and water vapor of 0-20 percent by volume; under the conditions of 150-300 DEG C and 3000-100,000 h<-1> airspeed, the denitrification efficiency is greater than 90 percent and can be stabilized for above 80 h; and the catalyst can be used for the nitrogen oxide emission control for flue gas from glass, steels and irons, coking coke ovens and other stationary sources.

The invention provides a machine vision online detection system for an electric connector shell. The system comprises three parts, namely a conveying part, a regulating and locating part and a vision detection part; the conveying part is a production line; the regulating and locating part is used for gradually regulating the posture of a detected shell by virtue of four pairs of cam pairs and is used for detecting the position of the regulated detected shell by virtue of a photoelectric sensor so as to prepare for shooting; and the vision detection part is composed of cameras and a light source, and the vision detection part can regulate the positions and the quantity of the cameras according to the size of the detected shell so as to meet the high-precision measurement of the detected size. The online detection system disclosed by the invention is not restricted by the shape and the size of the electric connector shell and can be mounted on an electric connector shell production line; the online detection system is strong in operability, good in applicability and high in working efficiency, and is especially applicable to the rapid online measurement of various electric connector shells.

The invention relates to an internet medicine trading subject credit assessment system and method, belonging to the technical field of internet information. The system comprises a credit model management module, a credit index management module, a grade management module, a credit grade assessment module, a data storage module, a subject database capturing module, a credit assessment reference information acquisition and management module and a subject credit grade issuance module, wherein the credit grade assessment module is connected with the subject database capturing module, the data storage module, the credit assessment reference information acquisition and management module and the subject credit grade issuance module respectively; the data storage module is further connected with the credit index management module, the credit model management module and the grade management module respectively; and the credit index management module is further connected with the credit model management module. According to the system and the method disclosed by the invention, the automation of internet medicine trading subject credit assessment can be realized, a real-time on-line dynamic assessment function is provided, and manual operations are reduced.

The invention discloses a method for parallel downloading of single-board software, which is carried out according to the following steps: A. Connect a computer used to monitor the download process and as a download data source to a bus through its data interface, and wait for the download data Each veneer of each veneer is connected on this bus respectively, establishes the physical connection between veneer and computer; B. described computer transmits download data to described bus through data interface, and download data is transmitted to by described bus Each single board is used for performing batch data download on each single board. The method of the present invention utilizes multi-threading technology and a combination method of software and hardware to realize the parallel operation of the download process so as to achieve the purpose of improving production efficiency. Low.

The invention discloses a magnetic coupling resonant wireless energy transmission apparatus and method. The apparatus comprises an emission apparatus and a receiving apparatus. The emission apparatus comprises a high-frequency power supply, an impedance matching network, a detection system and an emission coil. The receiving apparatus comprises a receiving coil, a rectification filtering circuit, a cascading conversion circuit, a control system and a load. According to the invention, a real-time detection and automatic adjustment apparatus is added to a wireless energy transmission. When a transmission distance and the load are changed, transmission performance of the system is detected in real time, free automatic control adjustment can be realized according to requirements of people, and large-power and high-efficiency transmission of the system can be guaranteed. The magnetic coupling resonant wireless energy transmission apparatus and method have vital significance in giving full play to middle and long-term distance advantages of such a technology and enhancing practicality of the technology.

The invention discloses an arc detection and inhibition method for a magnetron sputtering process. The operation of sampling magnetron sputtering power load voltage and load current is implemented by virtue of a voltage Hall sensor and a current Hall sensor, a voltage and current common change threshold detection method serves as an arc detection judgment basis, and if the arc does not exist, the current state is maintained; when the arc is detected, inhibition is immediately performed by reducing the output voltage amplitude; when arcs which exceed a set number are generated through accumulation, a target (namely a cathode) is cleaned in a forced mode. According to the method, the arcs can be reliably, efficiently and comprehensively detected, and losses in process intervals can be reduced as much as possible, so that the efficiency of the magnetron sputtering coating process and the quality of the coating are improved.

The invention relates to a magnetic composite algaecide and a usage method thereof, an adsorbent is uniformly dispersed in water and placed into a water bath reaction tank, FeCl3.6H2O and FeCl2.4H2O are put into the water bath reaction tank in the molar ratio of 2:1, rapid stirring is performed, the temperature is controlled to be 60DEG C to 90 DEG C, ammonia water is added after 15-30 min of stirring, the reaction is continued by 2-4 h, and unassembled magnetic nano materials and absorbent are removed by washing so as to prepare a magnetic composite absorbent; the magnetic composite absorbent and a photocatalyst precursor solution are added to the water bath reaction tank, the reaction is performed by 10-24 h at the temperature of 160 DEG C-220 DEG C, the temperature is cooled to the room temperature after reaction, and the absorbent and the photocatalyst are loaded on the magnetic nano materials after washing, magnetic separation and drying. The magnetic composite algaecide can effectively absorb flocculation algae and pollutants such as nitrogen and phosphorus in the water, toxin released by the algae is degraded by the photocatalysis, and the algae treatment efficiency is improved.

The invention discloses a filamentous fungi strain NAU-12 which is classified and named as Penicillium simplicissiumum and preserved in the China General Microbiological Culture Collection Center on June 25, 2015, and the preservation number is CGMCC NO.10990. The invention further discloses a composite filamentous fungal inoculant formed by mixing isometric Penicillium simplicissiumum NAU-12 bacterium (1*10<8> spores/mL-2*10<8> spores/mL) and aspergillus niger A80 bacterium (1*10<7> spores/mL-2*10<7> spores/mL). The invention further discloses a method for conducting bioleaching treatment on heavy metal contaminated soil through composite filamentous fungi which grow rapidly in soil, high in heavy metal resistance and capable of utilizing straw subjected to alkali-heat pretreatment as a growth carbon source and highly produce multiple small molecular organic acids. The method is adopted for treating the heavy metal contaminated soil, the removal efficiency of heavy metal is high , and the cost is low.

The invention discloses a reservoir dam soaking-out monitoring method based on a safety camera. The method sequentially comprises the following six steps: equipment is installed; a reference image isobtained; a target image is obtained; the images are compared; rainfall is obtained; and determination is carried out. The method is used for shooting the soaking-out condition of a reservoir dam in real time, replaces a manual patrol mode, and makes up for the defects of large working amount, low working efficiency and the like of traditional manual patrol.

The invention discloses a filtering material for high-temperature smoke and dust and a preparation method thereof. The filtering material is composed of five layers of symmetric composite structures and comprises high-temperature-resistant fiber nonwoven cloth on the outermost layers, high-temperature-resistant fiber woven cloth on the layers close to the outermost layers and superfine glass fiber nonwoven cloth on the middle layer. The preparation method includes: using the superfine glass fiber nonwoven cloth as a core filtering layer and composites of the high-temperature-resistant nonwoven cloth and the high-temperature-resistant woven cloth as upper and lower coating layers of the superfine glass fiber nonwoven cloth; reinforcing through ultrasonic binding or stitching with high-temperature-resistant stitching lines to prepare the filtering material. The filtering material can realize long-acting, low-resistance and high-accuracy filtering, so that energy consumption and raw material cost during use are lowered greatly.

The invention discloses an acceptance inspection tool for mounting dimension of a small-amount standalone product. The tool comprises a bottom plate, and measuring cylinders which are arranged on the bottom plate; each measuring cylinder comprises a cylinder section and a thread section; a plurality of threaded holes, which are screwed through the thread sections of the measuring cylinders, are arranged in the upper surface of the bottom plate; the arrangement mode of the threaded holes and the space between the threaded holes are consistent with those of mounting holes of the inspected standalone product; the measuring cylinders are in clearance fit with the mounting holes of the inspected standalone product. According to the acceptance inspection tool for the mounting dimension of the small-amount standalone product, the mounting dimension of the inspected standalone product can be judged to be qualified under the conditions that corresponding measuring cylinders can smoothly pass through all mounting holes of the inspected standalone product can smoothly and the mounting surface of the inspected standalone product is closely clung to the bottom plate of the tool.

The invention provides phosphaphenanthrene triazine double-radical compound attached fire-retardant fibers. The phosphaphenanthrene triazine double-radical compound attached fire-retardant fibers are mainly prepared from the following raw materials attached on surfaces of fibers in parts by mass: 5-30 parts of a phosphaphenanthrene triazine double-radical compound, 10-15 parts of an organic solvent, 50-80 parts of polyurethane resin and 0-30 parts of other fire-retardant compounds. A preparation method comprises the following steps of: mixing all the raw materials and uniformly stirring; controlling a stirring temeprature at 20-70 DEG C; coating a substance obtained by the step above on the surfaces of the fibers; and drying to obtain a product. The fire-retardant fibers of the phosphaphenanthrene triazine double-radical compound, provided by the embodiment of the invention, take the phosphaphenanthrene triazine double-radical compound as the main raw material; all the raw materials have good compatibility and the prepared fire-retardant fibers have high fire-retardant efficiency; a formed carbon layer is dense and has low poison in a combustion process.

The invention relates to the technical field of satellite navigation antennas and particularly discloses a micro-strip navigation antenna with an air back cavity. The inner part of the structural cavity in a navigation antenna package is of a groove structure, and the peripheral walls of the groove structure form a structural cavity enclosure structure, and a micro-strip printed board emitting layer radio-frequency substrate is installed on the structural cavity enclosure structure, so that the micro-strip printed board radiation layer radio-frequency substrate and the structural cavity form an air back cavity radiation layer; a micro-strip printed board radiation layer metal pattern is printed on the upper surface of the micro-strip printed board radiation layer radio-frequency substrate,a feed connector is arranged on the back of the structural cavity, so that a feed connector conductor in the feed connector penetrates through the structural cavity and is connected with the metal pattern. The air back cavity radiation layer additionally arranged in the structural cavity is used, so that the defects that a traditional micro-strip satellite navigation antenna is small in radiationbandwidth, low in radiation efficiency, poor in directionality and the like are overcome, and the engineering problem for the micro-strip antenna being installed in large temperature change and beingused for actual satellite navigation applications such as approaching multi-frequency points and the like is solved.

The invention discloses a preparation method of a novel wide-temperature high-efficiency non-toxic SCR (Selective Catalytic Reduction) catalyst and an application thereof. The general formula of the catalyst is AxFe(3-x)O4, wherein x is less than or equal to 1; and A is one or a combination of titanium, magnesium, manganese and nickel. The wide-temperature non-toxic iron-based denitration catalystis prepared by a coprecipitation method, the cost is reduced, and the defects that the traditional Fe-based SCR catalyst is low in denitration efficiency, narrow in temperature window, poor in stability performance and poor in selectivity can be effectively overcome. Under the conditions that the temperature is 200-450 DEG C, the air speed reaches 3000-200000h<-1> and nitric oxide flue gas contains 0-2700mg/m<3> of SO2 and 0-20% of water vapor, the denitration efficiency of the catalyst is stabilized at 90% or higher, and the N2 selectivity is stabilized at 95% or higher. The catalyst disclosed by the invention is applicable to nitric oxide emission control of fixed source flue gas in thermal power plants, coking plants and the like.

The invention discloses a method for synergistic treatment to improve the effect of oxygen-alkali pulping and belongs to the technical field of pulping and papermaking. The method comprises: pretreating raw materials through hot water at 30-60 DEG C, carrying out screw extrusion according to a compression ratio of 1: 1.5 to 1: 4, feeding the extruded materials into a digester, and adding a free radical controlling agent into the digester in digestion so that the oxygen-alkali pulping effect is improved. Compared with the conventional oxygen-alkali pulping method, the method utilizes combination of hot water pretreatment, spiral extrusion conveying and a free radical control agent to improve a fine pulp yield of oxygen-alkali pulping by 4-7%, reduce a Kappa number by 2.1 to 3.4 and improvewhiteness by 4% ISO to 6% ISO.

The invention relates to a three-dimensional annular braided composite material tube and mandrel separation system and a method thereof. The system and the method are used for separating a braided composite material tube and a mandrel, and the system comprises a fixed pedestal, a mandrel chucking headboard, a mandrel chucking backboard, a servo motor, a reducing transmission mechanism and a drawing stud; the mandrel chucking headboard and the mandrel chucking backboard are respectively arranged on the fixed pedestal; the mandrel is born on the mandrel chucking headboard and the mandrel chucking backboard; the braided composite material tube is butted between the mandrel chucking headboard and the mandrel chucking backboard; the servo motor is connected with and drives the reducing transmission mechanism; the reducing transmission mechanism is held to the fixed pedestal, and is connected with and drives the drawing stud; and the drawing stud can push the mandrel. The system and the method provide a high-efficiency separation scheme for the braided composite material tube and the mandrel, and have the advantages of simple operation, high reliability and good continuous workability.

The embodiment of the invention provides a method and a device for identifying interference in an LTE network, equipment and a medium. The method comprises the following steps: acquiring telephone traffic data of each cell in a network, and screening out interference cells of which the noise intensity is greater than a preset threshold value in the telephone traffic data; selecting at least threeselected interference cells from the interference cells, wherein the distance between any two selected interference cells is less than or equal to a preset distance; calculating an interference area covering all the selected interference cells according to the coordinates of the selected interference cells; acquiring MR data of all user equipment in the interference area, and defining the user equipment of which the MR data meets a preset condition as an interference point location; calculating the interference coefficient of each interference point position through the MR data of the interference point positions, calculating the coordinates of the interference source according to the interference coefficient of each interference point position and the coordinates of each interference point position, calculating the position of the interference source by collecting the speech system data and the MR data, and achieving interference checking intellectualization.

The invention relates to a closed full-degree-of-freedom wave power generation device and a working method thereof, and belongs to the technical field of wave power generation. The device comprises anupper shell, a lower shell, a hydraulic system, a first energy capturing unit, a second energy capturing unit and a third energy capturing unit. The first energy capturing unit, the second energy capturing unit and the third energy capturing unit are the same in structure and different in mounting orientations, the first energy capturing unit can achieve two degrees of freedom including first movement in an OXZ plane and first rotation in the Y-axis direction. The second energy capturing unit can achieve two degrees of freedom including second movement in the OXY plane and second rotation inthe Z-axis direction, and the third energy capturing unit can achieve two degrees of freedom including third movement in the OYZ plane and third rotation in the X-axis direction. The six-degree-of-freedom energy capturing mechanism is thus integrated, it is guaranteed that the device has high operation reliability, and it can also be guaranteed that the wave energy power generation device has highenergy capturing efficiency.

The invention relates to a purification method and device for short-process coal gasification black water. The purification method for the short-process coal gasification black water comprises the following steps: (i) allowing the short-process coal gasification black water to enter a jet flash separator for flash evaporation treatment; (ii) feeding the short-process coal gasification black water having been subjected to jet flash evaporation treatment to a micro-cyclone separator for preliminary centrifugal separation; (iii) sending the short-process coal gasification black water primarily purified by the micro-cyclone separator to a fluidized-bed separator for secondary purification; (iv) sending the short-process coal gasification black water deeply purified by the fluidized-bed separator to a deaerator for deoxygenation; and (v) after the fluidized-bed separator operates for a period of time and a pressure difference is 0.3 MPa, mixing the recycled short-process coal gasification black water and nitrogen and reversely feeding the obtained mixture to regenerate the separation medium of the fluidized-bed separator. The invention further provides the purification device for the short-process coal gasification black water .

The invention relates to a PbS/SiO2 co-doped nano integrated conical optical fiber amplifier and a preparation method thereof, and belongs to the technical field of optical fiber technologies and nanomaterial preparation. The nano-integrated tapered optical fiber amplifier is composed of a tapered optical fiber and a PbS/SiO2 co-doped nano-film prepared on the surface of the optical fiber by using an atomic layer deposition technology, and an optical fiber amplification effect is realized through an evanescent wave principle. The nano-film is composed of PbS and SiO2 nano-materials which arealternately deposited, and the thickness of the film can reach the micron level. The SiO2 can effectively improve the surface defect structure of the PbS particles and improve the stability and dispersity, so that the luminous efficiency is improved, and the refractive index of the nano semiconductor film can be reduced. The prepared PbS/SiO2 co-doped nano film has the advantages of high dispersity, high doping concentration, low loss, high luminous efficiency, high stability and the like. The high-gain optical fiber amplifier is simple in structure, low in price and easy for industrial production.

The invention provides an elevator car door pushing behavior recognition method based on machine vision. The elevator car door pushing behavior recognition method comprises the steps of: 1, collecting video samples, containing a plurality of scenes in an elevator car, of a network camera; 2, extracting image frames from the video samples at intervals to make a target detection data set; 3, performing YOLOV5 network training on the target detection data set, extracting a personnel target in the elevator car, and storing a target frame identification area of the personnel target as a picture; 4, labeling 18 key points of a human body pose according to the stored picture, and making a human body pose key point data set; 5, conducting Openpose network training on the human body pose key point data set, and extracting 18 key points of the pose of each person target in the elevator car; and 6, judging whether a door pushing behavior exists or not by utilizing the extracted 18 key points of the pose of each person target in the elevator car.

The invention discloses a new energy motor rotor core intermediate frequency internal and external simultaneous heating device, which comprises a box body, a heating extension inverter is arranged at the upper part in the box body, a touch screen control box is fixedly mounted at the upper end of the outer side wall of the box body, and the touch screen control box is in electric control connection with the heating extension inverter through a wire. A heating power source is arranged on the lower portion in the box body, a bearing plate is arranged outside the box body, a hydraulic cylinder is installed at the upper end of the bearing plate, a set frame is fixedly installed at the lower end of the bearing plate, a bottom plate is fixedly installed at the lower end of the set frame, and a rotor heating inductor is fixedly installed at the lower end of the bottom plate. The efficiency is greatly improved by internal and external simultaneous heating, and the external heating coil not only directly conveys heat to the outer circle of the rotor iron core, but also reduces heat source leakage from the aspect of heat dissipation, so that the problem of low efficiency or chip explosion caused by only heating the inner hole traditionally is greatly met and compensated, and the process is improved.

The invention discloses a heterogeneous multi-core processor for a tabu search scheduling algorithm. The heterogeneous multi-core processor with at least eight cores is applied to an upper-layer framework for thread scheduling, resource synergy management and performance statistics, and used for recording a tabu list of an optimal scheduling scheme of two threads on two processors, enhancing the system performance of the heterogeneous multi-core processor and saving energy. Through adoption of the heterogeneous multi-core processor for the tabu search scheduling algorithm, the thread migration times and sampling times are reduced effectively; the problem that only time and energy effective rate are considered in a conventional design is solved; the overall performance of a processor chip is improved effectively; and the energy consumption is lowered.

The invention provides an instrument integrated debugging and overhauling system and method. The system comprises a detection basic unit, a change-over switch, an instrument and an interface end; theinterface end is connected with an external control loop; the change-over switch is provided with four gears; when the change-over switch is in the debugging gear, the detection basic unit is connected with the instrument; when the change-over switch is in the maintenance gear, the detection basic unit is connected with the interface end, so that the detection basic unit is connected with the external control loop; when the change-over switch is in a normal use gear, the interface end is connected with the instrument; when the change-over switch is in a neutral gear, the change-over switch isdisconnected with the detection basic unit, the instrument and the interface end. The detection system is designed on the basis of a traditional instrument, so that the instrument has related functions required by debugging and overhauling; external operation is simple; and the problems of long construction time, low efficiency, inconvenience in use and the like of instrument debugging and overhauling in a traditional mode are solved.

The invention discloses a pulverized coal purging and separating device of a medium-speed coal mill. The pulverized coal purging and separating device comprises a plurality of purging and separating units arranged between two adjacent milling rollers. At least one purging and separating unit is arranged between every two adjacent milling rollers. Each purging and separating unit comprises a pulverized coal stirrer and a static ring wind guide ring. The top end of each pulverized coal stirrer is fixedly connected with a separator outer powder cone of the medium-speed coal mill. One end of eachstatic ring wind guide ring is fixedly connected with the top of a static ring of the medium-speed coal mill. The other end of each static ring wind guide ring is provided with a downwards-inclining protruding part facing the mill rollers. A nozzle blade ring is fixedly arranged on a millstone tray of the medium-speed coal mill. The nozzle blade rings can rotate along with the rotation of a millstone. By means of the pulverized coal purging and separating device of the medium-speed coal mill, the safety and economic benefits of the medium-speed coal mill are improved.

The invention discloses a no-wash disinfectant and a preparation method thereof. The no-wash disinfectant comprises the following components in percentage by weight: 60-80% of ethanol, 0.05-0.1% of polyhexamethylene biguanidine hydrochloride, 1-5% of a humectant, 1-5% of a skin care agent, 5-10% of plant extracts, 0.5-2% of a fatting agent, 0.01-0.5% of a pH regulator, 0.5-2% of a stabilizer and the balance deionized water. The no-wash disinfectant disclosed by the invention has the following advantages: (1) the no-wash disinfectant has good antibacterial and sterilizing effects; (2) multiple moisturizing and skin care components are added, so that the harm of alcohol to hands can be counteracted, a protective film can be formed, and the long-term moisturizing and skin care effects are achieved; and (3) a certain amount of plant extracts are added, part of the plant extracts have natural plant aroma and have synergistic antibacterial and skin care effects, and the components are natural, safe and non-irritating.