83results about How to "Simplify labor intensity" patented technology

The invention discloses a method for fermented-producing bacteria cellulose with pineapple peel juice by a two-step method. In the method, two stages, including multiplication of acetobacter xylinum and fermented production of bacteria cellulose, are separated from each other, sterile air is ceaselessly fed in at 22 to 28 DEG C in the process of fermentation and acetobacter xylinum is cultivated for 24 to 72 hours under 100 to 200rpm stirring, at this moment, the viable count of acetobacter xylinum is 10<8> to 10<9>cfu / ml, cells are subject to multiplication culture of bacteria to be in a synchronous growth period as far as possible, and the cells are then subject to shallow tray static cultivation in a fermentation medium for fresh juice of the pineapple peel so as to result in bacteria cellulose with the yield more than 17.5g / L. The method greatly shortens the production period of bacteria cellulose, makes full use of the pineapple peel and protects environmental, and in addition, the produced bacteria cellulose is compact and uniform in texture.

The invention provides a reactive dye salt-free dyeing process for cotton fiber, which comprises the following steps of pre-treatment, modified treatment, dyeing, post-treatment and so on. The modified treatment is that a copolymer of poly epichlorohydrin and polyamine used for cotton fiber is pretreated and cleaned under high temperature and alkali conditions before a special reactive dye used for a leveling agent is added to dye the cotton fiber, and the dyeing process is completed under salt-free, alkali-free or low-alkali conditions, thereby improving dyeing and fixing rate of the dye. The reactive dye salt-free dyeing process simplifies the prior dyeing process, is simple and easy to understand for operators, reduces influences of human operation factors on dyeing process and dyeing quality, and lowers production cost and sewage treatment cost overall.

The invention relates to a processing method of salt-free dyeing through activated dye, which includes the steps of: (1), acid pickling and enzyme washing of cotton fabric after the pretreatment of scouring and bleaching; (2) mixing water with organic solvent at volume ratio of (1:4)-(1:9) to form a mixed solution, and then adjusting the pH value of the mixed solution; and (3)dyeing the pretreated cotton fabric in 20-30 DEG C activated dye by using the mixed solution, then carrying out water scrubbing, acid pickling, soaping, hot-water scrubbing, color fixing and softening on the dyed cotton fabric, and finally recovering the solvent. With the processing method, the adsorption rate and the equilibrium adsorption amount of the activated dye are improved, and environmental and ecological problems caused when large quantity of inorganic salt is used are completely solved. In the dyeing process, the input of inorganic salt is omitted, so the operational techniques and the labor intensity in the dyeing process are effectively simplified and the production cost is reduced. Through a solvent recovery system, the solvent contained in the dyeing residue of the hydrosolvent is recovered for cycle use. Therefore, the recovery and the recycling of the resource are realized, the production cost is saved and the pollution to the environment is alleviated.

The invention discloses connection structures between foundation pit support piles and outer walls of a basement and a construction method. Each structure comprises a top beam (2) and an outer wall (3) of a basement, wherein a concrete bracket (4) protrudes out of the outer surface of the outer wall (3) of the basement; a concrete ring beam (5) is arranged on the top surface of the top beam (2); and a cross beam (5.2) of the concrete ring beam (5) presses the top surface of the concrete bracket (4). The construction method is characterized by pouring the concrete bracket (4) after pouring the outer wall (3) of the basement and then pouring the concrete ring beam (5) on the top beam (2) so that the cross beam (5.2) of the concrete ring beam (5) presses the top surface of the concrete bracket (4). The connection structures and the construction method have the following beneficial effects: wastes of such accessory structures as the foundation pit support piles (1), the top beams, circuit purlins and the like after construction of the basement structure can be avoided and the number of anti-buoyancy piles can be reduced.

The invention relates to a press, in particular to an intaglio press based on a color management operation system, and solves the problems that labor strength is high, yield is low, printing cost is increased, and the like in the existing intaglio press. The intaglio press comprises an automatic ink feeding device, a scraper height adjusting mechanism, a scraper angle adjusting mechanism, a scraper longitudinal-position adjusting mechanism, a PLC (programmable logic controller) system and an electrical control system composed of a human machine interface and a data server. Ink strength controllers and ink temperature controllers are mounted on the automatic ink feeding device. The scraper height adjusting mechanism is achieved through a pinion and rack mechanism, the scraper angle is adjusted by a worm and gear mechanism, and the longitudinal position of a scraper is adjusted by a screw rod mechanism, so that labor strength of printing operators is simplified, waste of ink and printing stock caused in an initial printing adjusting procedure is reduced, printing cost is reduced, delivery cycle is shortened, speed and registering accuracy of the whole press are increased, and efficiency and yield are high.

The invention discloses an industrial fermentation method of riboflavin, which comprises the following steps of: filling a seed culture medium into a 10m<3> seed tank, and performing oxic cultivation; and filling a fermentation medium into a 200m<3> fermentation tank for fermentation, mechanically stirring, adding sterilization starch glucose liquid, stopping fermenting till that the glucose is completely consumed or the dissolved oxygen is raised to be 60%, and extracting the riboflavin from the fermentation liquid. After the industrial fermentation method is used, the conventional riboflavin material-supplementing fermentation technology is changed, the low-concentration raw material cultivating bacteria is adopted, the material is quantificationally supplemented according to the changeof the dissolved oxygen of the fermentation solution, the excessive multiplication of the thallus can be effectively controlled, the deviation of the optimum control temperature caused by the excessive supersession can be avoided, the defects of the insufficient ventilation and oxygen supply can be remitted, and the thallus vigor can be kept, so that the indusial fermentation unit of the riboflavin is improved by more than 18g / L, and the yield is increased by 20% compared with the common fermentation.

The invention discloses a novel sulfamic acid after-treatment process, which comprises: carbamide is adopted to be sulfonated with oleum for preparing sulfamic acid; after the reaction the dilute sulphuric acid with the concentration of 5 to 30 percent is added to regulate the concentration of the sulphuric acid in an reaction kettle to be about 70 percent, and the sulphuric acid is isolated after holding; then the dilute sulphuric acid with the concentration of 1 to 10 percent or water is added into the reaction kettle for a second time acidity regulation to regulate the concentration of the sulphuric acid in the reaction kettle to be 5 to 20 percent; then the high pure product with the purity greater than 99.9 percent can be obtained after recrystallization, filtering and drying. The after-treatment process is easy for operation and the labor hardship is lower; and the purity of the product is high and the quality is better.

The invention discloses an upper jaw Le Fort I type osteotomy operation guide plate and a design method thereof; the operation guide plate is used for fixing 4 titanium plates on the front wall of the upper jaw so as to rectify cranio-jaw-facial deformity; the guide plate comprises a guide plate body and guide holes; the guide plate body comprises a left structure and a right structure mutually separated; the left and right structures are respectively used for operation of the left upper jaw and right upper jaw; the outer surface of each structure is provided with an osteotomy line and a plurality of guide holes; the osteotomy line is provided with a plurality of osteotomy line mark holes penetrating the structure; a positioning hole is arranged on each guide hole and the structure; one ends, close to the nose cavity, of the two structures are respectively provided with a piriform aperture edge limit composition; a spina nasalis anterior limit composition is arranged below the piriform aperture edge limit composition; the inner surface of the structure is provided with a water guide slot. The invention also provides a method designing the upper jaw Le Fort I type osteotomy operation guide plate.

The invention relates to a single cell algae cultivation device and provides a series connection type single cell algae photobiological reaction device to increase the production of the single cell algae and prolong the disinfection interval time of the device, the key points of the device are that: the device is formed a plurality of photobiological reaction units which are connected in series and have the same structure, each unit is provided with a water drain outlet, a sewage drain outlet and a base of an air inlet pipe, the edge of an opening at the lower end of a light transparent thin film cultivation cylinder is fixed by a lower fixed sleeve and the base which are connected by a bolt, the edge of the opening at the upper end of the light transparent thin film cultivation cylinder is fixed by an upper fixed sleeve and a top cover with water feed inlets which are connected by the bolts, a grid type shaping cover is inserted in the inner wall of the upper fixed sleeve and the lower fixed sleeve, the lower parts of the units are fixed on a support by the base, the upper parts of the units are suspended on a top frame by a pipe part and a connecting part which are connected with the water feed inlets, all the units are connected in series correspondingly by the own water feed inlet and the water drain outlet, a supply box which is arranged at the upper part of the top frame supplies an algal species and a culture liquid by a flowmeter, and the water feed inlet of the last unit is connected with a single cell algae collection box.

The invention belongs to the technical field of glucose production and particularly relates to a high-purity and high-polymerization-degree glucose production method. The method comprises the steps of material mixing, polymerization, reaction ending, decoloration, membrane separation, ion exchange, concentration and spray drying. By the aid of the method, the production program is simplified greatly, material are not in contact with the outside, secondary pollution and cross pollution of human factors to finished products are prevented or reduced, the product quality is good, and the production cost is low.

The invention discloses a storage rack for glass production, which comprises a fixed frame body, a support frame and a glass placement frame, hydraulic components are arranged in the fixed frame body, connecting rods are arranged on the front and rear sides of the fixed frame body, and the support frame Located between the two connecting rods, the support frame is located above the fixed frame body, the glass placement frame is located on the fixed frame body, and the glass placement frame includes a first glass placement frame, a second glass placement frame, a second glass placement frame, and a A third glass placement frame and a fourth glass placement frame. The present invention has strong practicability and reasonable structural design. The glass of different thicknesses is stored and stored in a differentiated manner through the first glass placement frame, the second glass placement frame, the third glass placement frame and the fourth glass placement frame, and the structural design is more reasonable. , It is also more convenient for unified management in the later stage. At the same time, by adjusting the length of the connecting shaft, different glass placement frames can be moved back and forth, so that the glass of specified specifications can be placed in the designated glass placement frame.

The invention discloses an automatic lofting calculation method used for a pipeline three-way computer. The method includes the following steps: a first step, a math model is firstly established; a second step, VB language is adopted for programming; a third step, the line outspread drawing of pipe three-way joints can be drawn in form2 after data is input into a form1window, and a template can be manufactured according to the drawing. The invention is established on the basis of relevant math models, and adopts the VB language programming and a lip-read operation interface to input relevant origin parameters, and after the automatic analysis of the computer, the line outspread drawing of pipe three-way joints is drawn finally. With the method, not only the technical requirement to workers can be reduced, the labor intensity of workers is simplified, work efficiency is enhanced, materials are saved and the resistance of pipeline flow is reduced, but also the manufactured three-way has an elegant appearance, which reaches the design requirement.

The invention provides a grounding short-circuiting apparatus of an urban mass transit power supply system and a grounding short-circuit method thereof. The apparatus comprises at least one grounding mechanism and a control terminal. The grounding mechanism includes an electric transmission pair provided with a shifting fork linked with a transmission shaft, an electroscope rod cranking arm, and a ground rod cranking arm, wherein the electroscope rod cranking arm and the ground rod cranking arm that are arranged coaxially are driven by the shifting fork to make rotation and a rotation angel difference exits between the electroscope rod cranking arm and the ground rod. The grounding mechanism also contains a knife switch type electroscope device containing a self checking module and an electroscope module. Besides, the control terminal includes an information processing and control module, a communication module, and a case. A centralized control center consists of a centralized control center case, a PLC processing module, a communication module, a disk surface operation indication module, and an industrial computer human computer interaction module. According to the invention, the apparatus is integrated with the self checking module, the electroscope module and the grounding module; and the self checking and electroscope share a knife switch type contact. The installation becomes flexible; a phenomenon that equipment is transported because of difference maintenance or repairing positions can be avoided and connection with a ground wire is not required; and the electric operation automation degree is high. And an enough safety distance is formed between a primary high voltage side and an operation component.

The invention discloses a rail-mounted water spraying device for municipal administration and relates to the technical field of water spraying equipment for municipal administration. The rail-mounted water spraying device for municipal administration comprises a main pipeline, a C-shaped supporting frame installed on the inner wall of the main pipeline, and a traveling mechanism installed on the outer wall of the main pipeline. Through holes are evenly formed in the positions, corresponding to the C-shaped supporting frame, of the pipe wall of the main pipeline in the length direction. In the main pipeline, each through hole is provided with a taper plug in a sealed fit mode. A rack is installed on the outer wall of the main pipeline in the length direction. The traveling mechanism comprises a supporting hoop, a power device installed on the left side of the supporting hoop, an ejecting device installed on the right side of the supporting hoop, and a control cabinet installed on the top of the supporting hoop. The ejecting device comprises a sliding sealing block installed at the lower right end of the supporting hoop. A water collection groove is formed in the middle of the concave arc face. A guide tube communicating with the water collection groove is formed in the outer side face of the sliding sealing block. According to the rail-mounted water spraying device for municipal administration, water is sprayed evenly, the stable water pressure can be maintained, and no area is left.

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 relates to a live working method for changing a double-circuit line triangularly-arranged linear pole into a strain pole. Comprising the following steps of S1, performing electricity testing on an insulator and a cross arm, S2, performing insulation shielding on an electrified body and a grounding body, S3, removing a binding wire, S4, lifting a three-phase wire, S5, fixing an insulation drainage wire bracket, S6, fixing the three-phase wire on a strain cross arm shielding cover, S7, performing breaking work on a near-side phase wire, S8, performing connection work on a near-side phase wire lead, and S6, performing connection work on a near-side phase wire lead. S9, connecting and disconnecting a far-side-phase wire and a middle-phase wire and connecting a lead wire; S10, dismounting a tension-resistant cross arm shielding cover; S11, dismounting an insulating drainage bracket; S12, dismounting an insulating shield; the wire lifting device has the advantages that due to the fact that lifting of the three-phase wire is achieved in the S4, the air gap and the safety distance between the wire and the cross arm can be effectively controlled, the safety performance during operation is greatly improved, the wire lifting device is remotely controlled by a ground electrician, the labor intensity of operators can be lowered, and the labor burden is relieved.

The invention relates to a bulk material loading uniform material distribution self-adaptive adjusting method. The method comprises the steps: recognizing sideboards; determining three-dimensional space coordinates of a point cloud; obtaining a material pile top end point cloud passing through a compartment center line; scaling two-dimensional data; analyzing material stack height data; calculating the material height of the middle section of a current carriage; calculating the scraping adjustment amount of a next carriage; and adjusting and loading. Multi-point positioning height data of the material form is obtained through point cloud calculation, qualitative and quantitative evaluation is carried out on the loaded material form through the data, qualitative evaluation is mainly carried out by comparing the front 'deficit' and the rear 'interference' with the loading height value of an expert database and preliminarily judging the reason causing the 'deficit ' or the excessive 'interference', the scraping set quantity of the next carriage is obtained through big data analysis and comparison, and the scraping height of the next carriage needs to be adjusted is decided. According to the method, a traditional loading mode needing experience can be converted into an automatic calculation process, the labor intensity of operators is reduced, and the loading efficiency is improved.

The invention relates to the technical field of integrated circuit board processing, in particular to a welding device for integrated circuit processing. An auxiliary fixing mechanism is arranged above an operating table for fixing an integrated circuit board. The auxiliary fixing mechanism slides transversely on an upper surface of the operating table through an X-axis linear track, and a mounting plate is arranged above the integrated circuit board. The welding device is novel in design, and can fix integrated circuit boards different in size and thickness by the auxiliary fixing mechanism without replacing a tool halfway, so that the labor intensity is reduced, the work efficiency is improved and the practicality is improved. By feeding wires by four wheels, the welding device is higherin efficiency and more stable. Meanwhile, a limiting ring further can limit a scroll, so that the problem of wire skip due to deviation in a rotating process of the scroll is avoided. A flue gas purification box can filter flue gas generated during welding effectively, so that damage to working environment and operating staff by flue gas is avoided, and the welding device is higher in environmental protection.

The present invention relates to a simple fluid circulation apparatus, which comprises a flange disc, a monitor and a rigid connection structure, wherein the flange disc and a fuel tank value of high voltage electrical equipment are detachably connected, both ends of the rigid connection structure are respectively and detachably connected with the flange disc and the monitor, two rapid connectors are respectively communicated with an oil inlet and an oil outlet, an oil pump and a monitoring component are arranged inside the monitor, the two rapid connectors are connected with the oil pump through pipelines, the oil pump can drive insulating oil to enter the pipeline from the oil inlet and be discharged from the oil outlet, and the monitoring component is provided for monitoring fault gas in the insulating oil in the pipeline. According to the simple fluid circulation apparatus, the valve, the flange disc, the rigid connection structure and the monitor are sequentially and detachably connected, and the rapid connector is introduced to achieve the pipeline communication so as to achieve modular design, simplify labor intensity, reduce cost and improve efficiency.

The invention provides a fertilizer distributor capable of spraying solid particles. The fertilizer distributor capable of spraying the solid particles comprises a medicine powder box, a motor, a blower device, a discharge device, a spray device and a fixed frame, wherein the motor and the blower device are arranged on the fixed frame; the medicine powder box is fixed on the motor and the blower device; the discharge device is arranged at the bottom of the medicine powder box; the spray device is connected with the blower device. The fertilizer distributor can effectively lower the labor intensity of workers, increase the discharge speed, and improve the labor efficiency; through the design of a spray mouth, the spray range can also be increased, the spray efficiency is improved, the spray effect is well, and the improvement of the production efficiency is facilitated.

A treatment method of organic waste water with high calcium and a high pH value belongs to the technical field of organic waste water treatment. The treatment method particularly comprises the following steps: (1) pretreating the waste water to control the fluctuation range of the calcium chloride concentration within a day to be not more than 10%, and to control the calcium hydroxide / BOD5 ratio to be not more than 1.2; (2) allowing the pretreated waste water to enter a first section for traditional aeration biological treatment; (3) allowing the effluent from biological treatment in the first section to enter a second section for oxidation biological treatment; (4) adopting the total effluent after biological treatment as water for adjustment. The invention provides the treatment method which needs no dilution by adding water, and no pH value reduction by adding acids; taking annual treatment of 2,500,000 tons of waste water with high calcium and a high pH value for example, at least 100% of dilution water is reduced, and acid adding cost of 3,700,000 yuan is reduced annually.

The invention discloses an intelligent fodder discharging system with a function of preventing dust from drifting away. The system comprises a baseboard, a U-shaped board is fixedly connected to the upper surface of the baseboard through two supporting boards, a motor is fixedly connected to the lower surface of the U-shaped board and located between the two supporting boards, a coil is fixedly connected to the output shaft of the motor, clamping devices are fixedly connected to both side surfaces of the coil, and the clamping devices comprise pull roes. According to the intelligent fodder discharging system with the function of preventing the dust from drifting away, the motor is controlled to rotate in the backward direction to make the pull ropes loose, so that a rectangular clamping block is connected into a first sliding groove in a clamping mode, and then an opening of a fodder bag is closely attached to the outer surface of a fodder discharging cylinder; a sliding board is pulled forward through a handle, so that fodder falls into the fodder bag through the fodder discharging cylinder; due to the fact that the fodder discharging cylinder is wrapped and closed by the openingof the fodder bag, it is avoided that the dust drifts away everywhere in the falling process of the fodder, so that damage to a worker of the dust is avoided, and work of the worker is promoted.

The invention relates to a calcium carbide crushing method. The method includes: A. material selection: selecting calcium carbide with a particle size of less than or equal to 30mm and a moisture content of less than or equal to 3%; B. impurity removal: removing iron impurities contained in the calcium carbide by iron removal equipment, with the iron impurity content being not greater than 1% after impurity removal; and C. crushing: crushing the impurity removed calcium carbide with a toothed roll crusher. The diameter of crushing rolls is 1000-1400mm, the length of the crushing rolls is 300-500mm, the rotation speed of the crushing rolls is 38-48r / min, the gap between the two rolls is 8-20mm, and the flow of calcium carbide passing through the two crushing rolls is 90-150 t / h. The method provided by the invention can crush calcium carbide to a particle size of less than 3mm, and provides calcium carbide with finer granularity to the downstream production process, thus being beneficial to fast proceeding of the downstream production process.

The invention discloses a liquid food detection sampling and collecting container. The liquid food detection sampling and collecting container comprises a constant temperature tank and test tube grooves. The test tube grooves are formed in the constant temperature tank. A separation wall is arranged at the central position of the constant temperature tank. The separation wall divides the test tube grooves into two parts according to the proportion of 2:3. Heat preservation cotton is arranged inside the separation wall. The two sides of each test tube groove are connected with supporting frames. A closed region is enclosed by the supporting frames and the corresponding test tube grooves. An electric heating wire and electronic refrigeration sheets are arranged beside the test tube grooves. The electric heating wire and the electronic refrigeration sheets are installed in the two closed regions of the constant temperature tank correspondingly. Test tubes are placed in the corresponding test tube grooves. The test tubes communicate with a steam generator through a steam pipeline. The steam generator is fixed to one side of the constant temperature tank. The steam pipeline is provided with an opening valve. The liquid food detection sampling and collecting container can achieve multiple purposes, the temperature requirements of different samples are met, hand-cranking power generation is realized, and therefore energy saving and environmental protection are achieved, and carrying is made convenient.

The invention relates to a cutting seedling raising culture method. The cutting seedling raising culture method comprises eight steps, i.e., container preparing, culture substrate preparing, cutting preparing, cutting pretreatment, cutting, subsequent management, seedling hardening and seedling transplanting. According to the method, the raw materials are low in cost and are readily available, the processing technology is relatively simple, and the processing cost is low; on one hand, the uniformity and sufficiency of nutrient elements in a fertilizer can be effectively improved, the increase of fusion among nutrients and absorption utilization ratio of young seedlings to nutritional ingredients is facilitated, the quality of a vegetation young seedling culture substrate is effectively improved from the young seedlings, the rate of development of the plant young seedlings is greatly increased, and the resistance of the plant young seedlings to severe environments and plant diseases and insect pests is improved; and on the other hand, the labor intensity and operation flow of young seedling fertilizer management operation can be effectively simplified, so that the aims of reducing young seedling management cost and increasing efficiency of young seedling culture operation are achieved.

The invention provides a method for automatically distributing inspection and analysis steel samples, belonging to the technology of sample automatic distribution in an inspection and analysis environment of a steel production process. The method comprises an inspection and analysis sample distribution system, wherein the inspection and analysis distribution system consists of a delegated receiving system, a sample generation system and a sample distribution system. The method is characterized by comprising the following steps: i, a service unit of a delegation part sends out a delegation identification to a delegated receiving system to generated inspection delegation; ii, the sample generation system generates an inspection sample identification according to a preset sample distribution rule; and iii, the sample distribution system sends inspection delegation information and inspection item information to a professional inspection and analysis laboratory for inspection according to an organization identification contained in the inspection sample identification. By the method, inspection and analysis sample distribution to different detecting instruments and inspection and analysis result collection are realized by designing a standard inspection and analysis process and consistent interfaces, so that the method has important significance for the realization of all-process automation and informatization of laboratory inspection.

The invention discloses a fodder falling intelligent system with the dust wafting prevention function. The system comprises a bottom plate, a U-shaped plate is fixedly connected to the upper surface of the bottom plate through two supporting plates, the lower surface of the U-shaped plate is fixedly connected with a motor, the motor is located between the two supporting plates, a rope disc is fixedly connected to an output shaft of the motor, clamping devices are fixedly connected with the two side faces of the rope disc, and the clamping devices comprise traction ropes. According to the fodder falling intelligent system with the dust wafting prevention function, the motor is controlled to reversely rotate to enable the traction ropes to be loosened, a square clamping block is clamped in a first sliding groove, an opening of a fodder bag is tightly attached to the outer surface of a discharging cylinder, a handle can pull a sliding plate forwards, the fodder falls in the fodder bag through the discharging cylinder, due to the fact that the opening of the fodder bag wraps and seals the discharging cylinder, the phenomenon that in the falling process of fodder, dust wafts is avoided, the injury of the dust to a worker is avoided, and worker work is facilitated.

The invention discloses an easy-to-clean metal coating of an electron-beam melting furnace wall, a spraying method thereof and a spraying device thereof. According to the spraying method, the metal coating is prepared by taking kerosene and pure oxygen as fuel and burning the fuel in a combustion chamber of the spraying device; at the same time pouring ion water into the combustion chamber for cooling and increasing pressure and adjusting a laval spray nozzle to control the constant pressure; taking nitrogen as powder carrying air source and spraying at a shorter spraying distance by using a short spray pipe with an internally installed flow dividing head. The metal coating has a certain thickness and the metal coating is low in bonding strength between furnace wall matrix, loose in internal microstructure, large in porosity, high in surface roughness, not free to fall off under the vacuum melting condition of 10<-2> Pa and prone to crust at a certain temperature, so that the coating can be easier to clean, the labor intensity of furnace cleaning operators can be greatly reduced, the damage and harm can be reduced and the content of the high-melting-point impurities in the cleanedshell-shaped coating can be less at the same time; the coating can be taken as a smelting recovery material and used as a spraying raw material, so that the economy of metal electron-beam melting machining can be significantly improved.