47results about How to "Controlling the Mixing Ratio" patented technology

The invention discloses a microbial grouting test device and a test method for uniformly solidifying silty soil. The device comprises a cementing liquid supply device, a grouting device and a negative pressure liquid extraction device, wherein the grouting device consists of a grouting barrel body consisting of an inner barrel and an outer barrel; an interlayer cavity is formed between the inner barrel wall and the outer barrel wall; a grouting hole is formed in the inner barrel wall; the top of the barrel body is communicated with the cementing liquid supply device through a liquid supply pipe; the bottom of the barrel body is communicated with the negative pressure liquid extraction device through a liquid discharging pipe; cementing liquid vertically flows into an inner cavity of the inner barrel from the top of the inner barrel and transversely flows into the inner cavity of the inner barrel through the interlayer cavity and the grouting hole; a silty soil layer for grouting is arranged above the inner cavity of the inner barrel, and a coarse sand filtering layer is arranged below the inner cavity of the inner barrel. The test device disclosed by the invention can realize automatic supplying of the cementing liquid, so that a large number of sediments in a liquid supply measuring barrel can be reduced; meanwhile, migration of the cementing liquid in a whole soil sample is realized, so that local blockage of calcium carbonate is prevented; the uniformity of distribution of the calcium carbonate in the whole test sample is improved; the solidifying effect is enhanced.

The invention provides a laser light source module group comprising a laser diode, a light filter, a first focusing lens group, a second focusing lens group, a fluorescent layer and an LED. A first light beam emitted out of the laser diode is firstly reflected by the light filter and then converged and incident to the fluorescent layer through the first focusing lens group; the fluorescent layer absorbs the first light beam and emits a second light beam having different wavelength from that of the first light beam; and the LED is arranged at the other side of the light filter relative to the incident first light beam, and light emergent out of the LED is converged through the second focusing lens group and then reflected by the light filter so as to form a third light beam, wherein driving current the laser diode and the LED can be respectively controlled. The proportion of two types of light in the final output light can be controlled through circuit control so as to adjust color temperature of the output light.

The invention provides a method for synthesizing 3-fluoro-4-(4-morpholinyl)aniline by using a micro-channel reactor. The micro-channel reactor comprises a preheating module group composed of one or more parallely-connected preheating modules and a reaction module group composed of one or more tandemly-connected reaction modules, wherein the preheating module group is series connection with the reaction module group. The method comprises the following steps: separately preheating difluorobenzene, concentrated nitric acid and concentrated sulfuric acid, then subjecting the preheated difluorobenzene, concentrated nitric acid and concentrated sulfuric acid to a reaction in the reaction module group and carrying out treatment so as to obtain 3,4-difluoronitrobenzene; dissolving 3,4-difluoronitrobenzene in an organic solvent, adding organic base, dissolving morpholine in the organic solvent, carrying out preheating, allowing the obtained solution to enter the reaction module group for a reaction and carrying out treatment so as to obtain 4-(2-fluoro-4-nitrophenyl)morpholine; and dissolving 4-(2-fluoro-4-nitrophenyl)morpholine in ethyl acetate, adding a catalyst, carrying out preheating, allowing the obtained solution and hydrogen to enter the reaction module group for a reaction and carrying out treatment so as to obtain 3-fluoro-4-(4-morpholinyl)aniline. The method has the advantages of low energy consumption, high yield, high product purity, safety, flexibility, etc.

The invention relates to the technical field of cultivation of kiwi fruits and in particular relates to a fertilization device for red-pulp kiwi fruits. The fertilization device comprises a rack, wherein a fertilizer box, a water tank, a traction mechanism, a fertilizer mixing mechanism, a punching and discharging mechanism and a transmission mechanism are arranged on the rack; the fertilizer boxis provided with a plurality of fertilizer bins used for containing different fertilizers; the traction mechanism is connected with a traction machine and drags the rack to move forwards; the fertilizer mixing mechanism is used for mixing different fertilizers according to a ratio; and the punching and discharging mechanism is used for punching on the ground and releasing the mixed fertilizers into the holes. According to the fertilization device for red-pulp kiwi fruits provided by the invention, the problems existing in the conventional artificial fertilization of kiwi fruit cultivation thatthe fertilizer mixing ratio is inaccurate to control and the fertilizers are not mixed uniformly can be solved.

The invention discloses a plaster stirring kettle feeding automatic conveying device, which comprises a bottom plate, wherein universal wheels are arranged at four corners of the bottom end of the bottom plate; the top end of the bottom plate is provided with a slide groove; a slide block is glidingly arranged in the slide groove; the top end of the side block is hinged to a connecting rod; the top end of the connecting rod is hinged to a material conveying tube; a first electric motor is arranged on the side wall of one side of the bottom plate through screws; an output shaft of the first electric motor is connected with a threaded rod; the threaded rod is rotationally connected in the slide groove; a support rod is welded at one side of the top end of the bottom plate; the top end of thesupport rod is hinged to a material conveying tube; a second electric motor is arranged on the side wall of one side of the material conveying tube through screws. The conveying height can be regulated according to requirements; carbonatite particles can be screened; the carbonatite particles with the proper size are screened to be stirred and mixed; the production and use effects of the plasterare improved; the carbonatite particles can be weighed; the mixed proportion of the carbonatite particles and additive powder is controlled; the functions are diversified.

The invention discloses a novel 3D printer. The novel 3D printer comprises a pedestal, a top cover, a printing head base, a printing head and a laser assembly, wherein the printing head is installed on the printing head base. The pedestal is connected with the top cover through a stand column in an assembled mode, the printing head base is connected with the stand column through a moving mechanism, the laser assembly is installed on the printing head base, and the focal point of a laser beam emitted by the laser assembly is located at a print material outlet in the printing head. According to the novel 3D printer, the novel 3D printer is used for achieving a FDM printer, the printing head and the laser assembly are installed together, so that the printing head and the laser assembly move together, and meanwhile the focal point of laser emitted by the laser assembly further needs to be aligned with a print material extruding end of the printing head; and an SLA printing technology can be achieved on the structure of an existing FDM printer, a complex optical system is not needed, meanwhile the printing precision and the price are guaranteed, and high cost performance is achieved.

The invention discloses a man-made lawn raw material mixing device comprising a weighting device, a raw material mixer and at least two storage silos. The material outlets of the storage silos are arranged above a material inlet of the weighting device, and a material outlet of the weighting device is arranged above the material inlet of the raw material mixer; the storage silos, the weighting device and the raw material mixer are arranged in a shell in sequence; and the material outlets of both the storage silos and the weighting device and the material inlets and the material outlets of the raw material mixer are respectively provided with a pneumatic valve. The invention controls raw material weighting, mixing, discharging, and the like through a computer, evenly mixes the raw material of a small quantity at low speed, weights the raw material at high precision, ensures the quality of a man-made lawn and saves the manpower and the electrical energy, and the like.

The invention provides a method for synthesizing 5-chlorin-2-formyl chloride thiofuran by a micro-channel reactor. The micro-channel reactor is formed by sequentially connecting preheating modules, a reaction module group and a temperature reducing module in series, wherein more than two preheating modules are respectively connected in series with the same reaction module group. The method comprises the reaction steps that raw materials of 5-chlorin-2-formic acid thiofuran are dissolved in a solvent to form a 5-chlorin-2-formic acid thiofuran solution; DMF (dimethyl fumarate) is added to be prepared into a material 1; triphosgene is dissolved in a solvent to be prepared into a triphosgene solution to obtain a material 2; the material 1 and the material 2 respectively enter different preheating modules; after being preheated, the materials enter the reaction module group for reaction, then enter the temperature reducing module and flow out of the reactor; reaction liquid is collected; after reduced pressure distillation, the 5-chlorin-2-formyl chloride thiofuran is obtained. The method provided by the invention has the advantages that the reaction temperature is accurate; the feeding proportion can be conveniently controlled; the reaction period is short; green and environment-friendly effects are achieved.

The invention discloses a ventilation device forming an airflow organization of an air pool, and a control method of the ventilation device. The ventilation device comprises a ventilation duct which is vertically mounted at the top of a room and close to a side wall of the room, wherein the ventilation duct communicates with the room, and the cross section of the ventilation duct is semicircular; the plane of the ventilation duct in the vertical direction is parallel to the side wall of the room, on which the ventilation duct is mounted, an air supply outlet in the top end of the ventilation duct is in external connection with an air supply device; an air exhaust device is also arranged at the top of the room, and communicates with the room. Through the adoption of the ventilation device disclosed by the invention, the mixing amount of the air in the ventilation device with indoor polluted air or hot air is reduced, and the air supply quality is improved; the coverage of a formed cold air pool is extensive, and the supplied airflow is applied to a whole working region at the greatest extent, so that the air freshness of the whole working region is guaranteed; therefore, the air quality of the working region and the temperature and humidity of the working region meet requirements for comfort.

The invention discloses a bilateral ventilation device for forming air tank air distribution and a control method thereof. The bilateral ventilation device comprises two ventilating ducts which are vertically mounted on opposite-side wall corners or same-side wall corners on the top of a room, wherein the ventilating ducts communicate with the room; the cross section of each ventilating duct is in the shape of one fourth a circle; two planes, in the vertical direction, of the ventilating ducts are respectively parallel to two walls on the wall corners of the room in which the ventilating ducts are mounted; top-end air-supply outlets of the ventilating ducts are externally connected with air supply devices; and an air exhaust device which communicates with the room is further arranged on the top of the room. According to the bilateral ventilation device disclosed by the invention, mixing amount of air and indoor polluted air or hot air is reduced, and the quality of supplied air is improved; a formed cold air tank is relatively wide in coverage, and the whole working region is acted to the greatest extent by utilizing an air supply mode of forming double-faced wall attachment jet by virtue of the air supply outlets and two side walls on the wall corners, so that the freshness of the air in the whole working region is guaranteed, and the quality and the temperature and humidity of the air in the working region meet comfort requirements.

The invention relates to a multi-pipe air inlet air mixing cabin which comprises a shell, an indoor air inlet pipe set, an outdoor air inlet pipe set and down draught preventing valve plates. An air mixing region and a mixed air outlet are formed in the shell, holes allowing indoor air inlet pipes and outdoor air inlet pipes to be inserted are formed in the shell, the indoor air inlet pipe set comprises the indoor air inlet pipes, the outdoor air inlet pipe set comprises the outdoor air inlet pipes, one end of each indoor air inlet pipe and one end of each outdoor air inlet pipe are arranged in the air mixing region, the other end of the corresponding indoor air inlet pipe and the other end of the corresponding outdoor air inlet pipe are arranged outside the shell, all the ends, in the air mixing region, of the indoor air inlet pipes and all the ends, in the air mixing region, of the outdoor air inlet pipes are provided with the down draught preventing valve plates, the down draught preventing valve plates are connected and fixed to the indoor air inlet pipes and the outdoor air inlet pipes through hinges, and the hinges are located in the centers of openings of the indoor air inlet pipes and the centers of openings of the outdoor air inlet pipes. Air inlet amount is disintegrated through multi-pipe air inlet, and control over air mixing proportions and air mixing temperature is facilitated; the problems of air leakage and down draught can be solved through the tiny air inlets and the down draught preventing valve plates.

The invention discloses a production process of spun silk / PTT blended yarn. The process comprises the following steps of S1, pretreatment of the spun silk; S2, preparation for pre-drawing of the spunsilk; S3, preparation for pre-drawing of PTT fibers; S4, preparation of mixed drawn slivers; S5, preparation of the blended yarn; S6, dyeing of the blended yarn; S7, winding. According to the production process of the spun silk / PTT blended yarn, the spun silk and the PTT yarn are separately subjected to carding and sliver mixing during blending so that the carding process can be controlled more easily, and the blending proportion of the two fibers in the prepared blended yarn can be precisely controlled; the blended yarn has better properties and higher yarn evenness, and the quality of the blended yarn is improved.

The invention discloses a carbon fiber reinforced thermosetting resin-based composite material and a preparation method thereof, and belongs to the technical field of advanced composite materials. The preparation method comprises the following steps: sampling matrix resin, a low-shrinkage agent, a curing agent, a polymerization inhibitor, an internal release agent, a thickening agent and a dispersing aid according to the mass ratio, and conducting stirring and uniform mixing to prepare resin paste; preparing flaky carbon fiber prepreg from the resin paste and the carbon fiber non-woven fabric through a flaky molding compound process; flatly laying and overlaying the sheet-shaped carbon fiber prepreg, and conducting vacuum hot pressing and die assembly molding; and after the vacuum hot pressing die pressing is finished, and conducting cooling and demolding to obtain the carbon fiber reinforced thermosetting resin-based composite material. The preparation method has the characteristics of simple process, short production period, low energy consumption, designable strength and modulus, easiness in large-area forming, capability of meeting the forming requirements of products with complex shapes and structures and the like; and the prepared composite material has the excellent performances of high strength, high modulus, light weight, isotropy and the like.

The invention relates to a multi-pipe air inlet air mixing cabin which comprises a shell, an indoor air inlet pipe set, an outdoor air inlet pipe set and down draught preventing valve plates. An air mixing region and a mixed air outlet are formed in the shell, holes allowing indoor air inlet pipes and outdoor air inlet pipes to be inserted are formed in the shell, the indoor air inlet pipe set comprises the indoor air inlet pipes, the outdoor air inlet pipe set comprises the outdoor air inlet pipes, one end of each indoor air inlet pipe and one end of each outdoor air inlet pipe are arranged in the air mixing region, the other end of the corresponding indoor air inlet pipe and the other end of the corresponding outdoor air inlet pipe are arranged outside the shell, all the ends, in the air mixing region, of the indoor air inlet pipes and all the ends, in the air mixing region, of the outdoor air inlet pipes are provided with the down draught preventing valve plates, the down draught preventing valve plates are connected and fixed to the indoor air inlet pipes and the outdoor air inlet pipes through hinges, and the hinges are located in the centers of openings of the indoor air inlet pipes and the centers of openings of the outdoor air inlet pipes. Air inlet amount is disintegrated through multi-pipe air inlet, and control over air mixing proportions and air mixing temperature is facilitated; the problems of air leakage and down draught can be solved through the tiny air inlets and the down draught preventing valve plates.

The invention discloses a method for resource utilization of agricultural wastes, wherein the method comprises the following steps: the agricultural wastes are put into a digestion tank and fermented,and biogas is compressed by a compressor after passing through a purification system for standby application; biogas slurry enters a liquid storage tank for storage through a primary filtration device, a pump and a secondary filtration device; a water outlet pipeline of the liquid storage tank and a water outlet pipeline of agricultural irrigation are connected for coupled irrigation for crops; the water outlet pipelines are each equipped with a water flowmeter for controlling the mixing ratio of the biogas slurry and water; a small part of bottom sediments in the digestion tank are collectedas an inoculum in next fermentation broth, mixed in agar, and retained in an anaerobic environment; the remaining biogas residue is put in a stack retting tank, and a reagent is added in the stack retting tank, so that the biogas residue can form a humic acid fertilizer. The method not only produces biogas to provide energy, but also avoids the biogas slurry blocking pipelines and pumps, ensuresthe activity of the inoculum of the fermentation broth, and improves the fertilizer efficiency of the biogas residue.

The invention discloses piston ring manufacturing equipment, including: a raw material box, hinges, a box door, a piston ring output port, support feet, a manufacturing main machine and an operation panel. The raw material box is fixedly installed on the left-upper end of the manufacturing main machine. The box door is connected to the front surface of the manufacturing main machine through the hinges. The left end of the piston ring output port is embedded in the right-lower end of the manufacturing main machine. In the equipment, flow rate of the raw materials is controlled by means of an electromagnetic valve, thus accurately controlling mixing ratio of the raw materials; then the raw materials are filtered and screened by means of a screen mechanism, thus removing impurities, so that the raw materials are finer and the manufactured piston rings are finer too; by means of a stirring mechanism, the raw materials are heated and stirred more uniformly; finally, by means of a pushing mechanism, the raw materials are pushed into a thermo-shaping mechanism to shape the piston rings. Through the thermo-shaping, the shape stability of the piston rings is improved; therefore, the pistonrings are more robust and stable.

The invention provides a medical atomizer. The medical atomizer comprises an atomization box, an ultrasonic atomizer and a liquid medicine box, wherein the ultrasonic atomizer is fixed in the atomization box; the liquid medicine box is installed on the upper portion of the atomization box; a partition plate is fixed in the liquid medicine box; a fan box is fixed on the upper portion of the liquidmedicine box; a mist feeding groove is formed in the fan box; a fan is arranged in the mist feeding groove; a machine box is arranged on the upper portion of the fan box; an operating mechanism, a control mechanism and a connecting pipe are installed in the machine box; a cover plate is arranged on the upper portion of the machine box; the upper portion of the connecting pipe penetrates through the machine box and the cover plate; a mouthpiece base is installed at the upper end of the connecting pipe; and a mouthpiece is installed on the mouthpiece base. According to the invention, different kinds of liquid medicines can be separately stored in the atomizer, the liquid medicines do not need to be additionally carried, all the liquid medicines in the liquid medicine box are separately atomized directly when the atomizer is used, the liquid medicines are mixed after being atomized, and the atomizer is easy to operate and relatively convenient to carry outdoors.

The present invention relates to a thermostatic gas supply device for liquid fuel cylinder, it is placed in the interior of liquid fuel cylinder, and it includes a switching valve, a gas intake tube, a level detector, a heating rod, an internal sleeve, a non-return valve, a control box, several tube lines and signal wire. Said invention provides their connection method, and can provide mixed gas with optimum fuel and air mixing ratio so as to raise the application efficiency of fuel.

The invention belongs to the field of engine control and provides an intelligent engine mixed gas adjusting system. The system comprises an engine state detection unit, an engine temperature detection unit, a controller unit and an air door adjusting unit. The control unit is used for comparing the engine temperature with a preset temperature when an engine is in a starting state, sending a first air door control instruction to the air door adjusting unit when the engine temperature is lower than the preset temperature so as to enable an air door to start to sweep from a full-closed state, and sending a second air door control instruction to the air door adjusting unit when the engine temperature is higher than or equal to the preset temperature to enable the air door to start to sweep from a full-open state. The intelligent engine mixed gas adjusting system can improve the starting efficiency of the engine.

The invention discloses a remote fluorescent powder performance test device and a test method, and relates to fluorescent powder. The remote fluorescent powder performance test device is provided with an integration ball, a cosine collector, a blue light LED (light emitting diode) source, a light reflection cup, a fluorescent powder sheet / silica gel sheet, a TEC (triethyl citrate) temperature control clamp, a constant-current source, a spectrometer, a computer and a base, wherein the integration ball is fixed on the base and is provided with a light inlet and a light outlet; the cosine collector is connected with the spectrometer through an optical fiber at the light outlet and is used for collecting incident light; the output end of the spectrometer is connected with the computer and is used for spectrum collection and data analysis; the blue light LED source is connected with the constant-current source, serves as an exciting light source and is fixed on the TEC temperature control clamp, so that the stability of the light source is guaranteed through temperature control; the light reflection cup is fixed on the blue light LED source and achieves a light focusing effect; the fluorescent powder sheet / silica gel sheet is attached to the light reflection cup; the blue light LED source excites fluorescent powder to generate yellow light, and the yellow light and penetrating blue light are blended to synthesize white light.

The invention relates to the field of processing of road asphalt concrete and discloses cold recycling equipment for road asphalt concrete. The cold recycling equipment comprises a storage mechanism of waste asphalt concrete, a water storage mechanism, a cement storage mechanism, a foamed asphalt storage mechanism, a mixing box and a collecting box, wherein the foamed asphalt storage mechanism comprises a heating tank and a foaming mechanism; the foaming mechanism comprises a pipe body which comprises an entering section, a mixing section and a discharging section from top to bottom; the mixing section comprises a water pipe communicated to the water storage mechanism, a water pump is mounted on the water pipe, the water pipe is of an L-shaped structure, the vertical section of the water pipe and the axis of a first liquid pipe are located on the same straight line, a mixing platform is slidably connected to the outer side of the water pipe, and the end part of the mixing platform is slidably connected to the side wall of the entering section. The constant temperature water enters the asphalt and the contact time of the constant temperature water and the asphalt is prolonged, so that the foaming rate of the asphalt is improved.

The invention provides a proportional feed mixing equipment for construction engineering, comprising: a base, a mixing tank and a water inlet; a group of mixing tanks is fixedly connected to the top of the base; a group of mixing tanks is fixedly connected to the inner central axis of the mixing tank The stirring shaft; the right end face of the mixing bucket is fixedly connected with a group of the gearbox; the power input shaft of the gearbox is fixedly connected with a group of the hybrid motor; the power output shaft of the gearbox A set of stirring shafts is fixedly connected coaxially; a set of mixing outlets is provided on the left lower end surface of the mixing barrel. The mixing effect and mixing efficiency are improved by adopting the spiral blade-like mixing blade and the fixed mixing paddle; by setting two sets of reclaiming wheels and adjusting the reclaiming speed through the speed of the retrieving wheels, the mixing ratio can be controlled accurately, and the mixing ratio can be precisely controlled and further improved. The material is uniform and prevents the uneven mixing caused by the accumulation of materials.

The invention belongs to the technical field of air conditioners, and particularly provides an induced air outlet device for an air conditioner and an air supply control method for the air conditioner. The problem that an air supply mode of an existing air conditioner easily causes discomfort to a user is solved. Therefore, the induced air outlet device comprises an induced component and an air storage component communicated with an air supply outlet, an induced air opening and an air outlet are formed in the induced component, an induced air panel is arranged at the induced air opening, a plurality of induced air holes are formed in the induced air panel, an air outlet panel is arranged at the air outlet, and a plurality of air outlet holes are formed in the air outlet panel; and an air acceleration structure is arranged between the air storage component and the induced component, and the air acceleration structure is arranged to enable negative pressure to be formed in the induced component, so that indoor air enters from the induced air hole, is mixed with air exhausted by the air acceleration structure and then enters a room through the air outlet holes, so that the temperatureof air blown out of the air outlet holes is closer to the room temperature, and the comfortable heat exchange experience of the user is effectively ensured.

The invention discloses a piston ring manufacturing equipment, the structure of which comprises a raw material box, a hinge, a box door, a ring outlet, a supporting foot, a manufacturing host, and an operation panel. The front surface is connected, and the left end of the ring outlet is installed on the lower right end of the manufacturing machine by embedding. The flow of raw materials is controlled by a solenoid valve, and the mixing ratio of raw materials can be accurately controlled, and then the raw materials are filtered and screened by the screening mechanism. The materials are excluded to make the raw materials more delicate, so that the manufactured piston rings are more detailed, and then the raw materials are heated and stirred by the stirring mechanism to make the stirring more sufficient, and then the materials are pushed into the heat setting mechanism by the booster mechanism to shape the piston ring , the shape stability of the piston ring can be improved by heat setting, and the piston ring will then be stronger and more stable.

The present invention relates to a mixing equipment, more specifically a compound fertilizer mixing equipment, including a mixer, an opening and closing control mechanism, a fertilizer box and an opening and closing door. The method of different areas of the falling holes, so as to realize the control of the mixing ratio of the two fertilizer raw materials. The opening and closing control mechanism is fixedly connected to the upper end of the mixer, the rear end of the opening and closing control mechanism is engaged with the mixer for transmission, the fertilizer box is fixedly connected to the upper end of the mixer, the opening and closing control mechanism is located at the lower end of the fertilizer box, and the opening and closing door Two opening and closing doors are arranged on the left and the right, and both opening and closing doors are slidingly connected with the fertilizer box, and the two opening and closing doors are respectively slidingly connected with the left and right ends of the fertilizer box.

The invention discloses activated-carbon V-type sound absorption cotton and production manufacturing equipment thereof. The equipment comprises a base, an equipment cabinet is welded to the top of thebase through supports, and an activated-carbon storage box and a quantitative pipe are welded to the inner wall of one side of the equipment cabinet; the quantitative pipe is located below the activated-carbon storage box, and a motor and a guide groove are fixedly connected into the quantitative pipe through bolts. According to the equipment, through arrangement of the guide groove, the quantitative pipe, the motor, screen cloth, the activated-carbon storage box, a spring, a cover plate, a feeding hole, a push plate, a spiral rod and a nut base, when activated carbon needs to be conveyed, the motor drives the spiral rod to rotate through a rotation shaft, the spiral rod is screwed with the nut base during rotation, the nut base horizontally moves along the spiral rod, when the push plateat one side of the nut base is moved to the portion where the cover plate is located, the push plate is clamped to a clamping groove in one side of the cover plate, the nut base continues to move, the push plate pushes the cover plate to move, and the feeding hole is in a communicated state.

The invention provides a method for synthesizing 3-fluoro-4-(4-morpholinyl)aniline by using a micro-channel reactor. The micro-channel reactor comprises a preheating module group composed of one or more parallely-connected preheating modules and a reaction module group composed of one or more tandemly-connected reaction modules, wherein the preheating module group is series connection with the reaction module group. The method comprises the following steps: separately preheating difluorobenzene, concentrated nitric acid and concentrated sulfuric acid, then subjecting the preheated difluorobenzene, concentrated nitric acid and concentrated sulfuric acid to a reaction in the reaction module group and carrying out treatment so as to obtain 3,4-difluoronitrobenzene; dissolving 3,4-difluoronitrobenzene in an organic solvent, adding organic base, dissolving morpholine in the organic solvent, carrying out preheating, allowing the obtained solution to enter the reaction module group for a reaction and carrying out treatment so as to obtain 4-(2-fluoro-4-nitrophenyl)morpholine; and dissolving 4-(2-fluoro-4-nitrophenyl)morpholine in ethyl acetate, adding a catalyst, carrying out preheating, allowing the obtained solution and hydrogen to enter the reaction module group for a reaction and carrying out treatment so as to obtain 3-fluoro-4-(4-morpholinyl)aniline. The method has the advantages of low energy consumption, high yield, high product purity, safety, flexibility, etc.