517results about How to "Few steps" patented technology

The invention provides a structure capable of controlling a large-volume water gate crack and a construction method thereof, and belongs to the technical field of water gates. The structure comprises a gate bottom plate and a gate pier which are formed by pouring concrete, and the gate pier is arranged above the gate bottom plate; hole cavities are at least formed in the gate piers and reserved in the concrete pouring process. The hole cavity is used as a self-constrained stress hole; and the tough material is used for absorbing stress, is filled in the pore cavity and is connected with the inner wall of the pore cavity. The method comprises the steps of S1, construction preparation; s2, foundation treatment; s3, gate bottom plate construction; s4, gate pier construction: S41, construction lofting; s42, gate pier reinforcing steel bars are bound and installed; s43, a gate pier formwork is erected above the gate bottom plate; s44, a hole forming device is installed at the designed position; s45, concrete pouring, vibrating and curing are conducted; and S46, after initial setting of the concrete, the hole forming device is pulled out of the pipe, and a formed hole cavity is filled with a tough material. The sluice pier crack can be effectively controlled, and the use durability and safety of the sluice are improved.

The present invention discloses a polarizer mounting machine, comprising: a first conveying mechanism for transporting a substrate to be mounted; an adsorption device, arranged on the first conveying mechanism, for adsorbing a polarizer body and horizontally attaching the adsorbed polarizer body to the substrate to be mounted; a second conveying mechanism, arranged on the right side of the first conveying mechanism, for transporting the substrate to be mounted with the polarizer body attached; a rolling compacting mechanism, arranged on the second conveying mechanism, for rolling and compacting the substrate to be mounted with the polarizer body attached during the transmission process. The present invention integrates the functions of automatic transport, automatic adsorption, automatic bonding and automatic rolling, has a high degree of automation, can greatly reduce the steps of polarizer mounting, reduce the difficulty of polarizer mounting, and can flexibly control the holding force of the compacting roller, thereby improving the polarizer mounting effect and efficiency.

The invention relates to the technical field of infrared detectors, and discloses a packaging structure of an infrared detector, which comprises an optical window, a bracket, an infrared detection chip and a substrate, the substrate is of a flat plate structure; the support is of a frame-shaped structure. The infrared detection chip is connected to the upper surface of the substrate; and the optical window and the bracket as well as the bracket and the substrate are welded through welding flux to form a packaging structure. According to the packaging structure, the requirements of miniaturization, light weight, diversification and low cost of the infrared detector module can be met. Meanwhile, the invention further provides a packaging method of the infrared detector.

The invention relates to a pressurized water reactor MOX fuel powder preparation method, which comprises: preparing a mixed actinide eutectic melt from a mixed actinide salt and a urea solid, and carrying out deamination, denitrification / decarbonization and reduction on the mixed actinide eutectic melt to directly obtain MOX fuel powder, the mixed actinide salt is hexavalent actinide nitrate and tetravalent actinide oxalate; when the mixed actinide salt is a uranyl nitrate hexahydrate solid and a thorium oxalate hexahydrate solid, the MOX fuel powder is (UxTh1-x) O2; when the mixed actinide salt is a uranyl nitrate hexahydrate solid and a plutonium oxalate hexahydrate solid, the MOX fuel powder is (UxPu1-x) O2. According to the method provided by the invention, the raw materials are simple, the preparation process flow of the MOX fuel powder composed of UO2 and PuO2 (or ThO2) can be greatly simplified, the use of process reagents is reduced, and no process waste liquid is generated, so that the MOX fuel powder preparation method which is simple, convenient, high in production efficiency, free of waste liquid and more economical and green is provided.

The invention discloses a wave energy floater model time domain simulation method and a related device, and the method comprises the steps: carrying out the decomposition of a wave energy floater model, a gravity field model, a wave energy floater system model, a wave force calculation model, a buoyancy calculation model, an additional mass calculation model, a damping force calculation model, a still water restoring force calculation model and a viscous force calculation model are obtained; modeling is carried out on the sub-models obtained through decomposition through OpenModelica, a connection relation is established for the sub-models, and the model is solved through a solver. According to the method, the wave energy floater model is decomposed into a plurality of sub-models for modeling according to the potential flow theory, then the equation equation can be established after the physical relations of the sub-models are connected, the equation set is solved through the solver, the steps in the physical modeling process are greatly reduced, the difficulty of solving the equation set is reduced, and the modeling efficiency is improved. The reusability, the reconfigurability and the expandability of the wave energy floater model time domain simulation method are improved.

The invention discloses a preparation method and application of a catalyst for preparing synthesis gas through methane dry reforming, and belongs to the technical field of preparation and application of a catalyst for methane dry reforming. The catalyst is composed of carriers (SiO2, Al2O3, MgO and the like), active metals (Ni, Co and the like), oxide assistants (CeO2, La2O3, ZrO2, MgO, CaO and the like) and alkali metal assistants (Na, K and the like). The oxide auxiliary agent is uniformly dispersed on the surface of the carrier in a nano island structure; the active metal component falls on the surface of the carrier modified by the oxide nano island in a nano particle form. The preparation method of the catalyst is simple, high conversion rates of methane and carbon dioxide, high hydrogen-carbon ratio (H2 / CO) and good catalytic stability can be achieved, in a 2000-hour long-period dry reforming reaction at 800 DEG C, the conversion rates of the carbon dioxide and the methane are up to about 96% and 92%, the hydrogen-carbon ratio is about 0.96, and obvious inactivation does not occur.

The utility model discloses an indoor unit and a heating and ventilation system. The indoor unit comprises a shell, a water pump assembly and a connecting pipe, a heat exchange air duct is defined in the shell, the shell comprises a water pan, at least part of the water pan forms the inner wall face of the heat exchange air duct, and the water pan is provided with a water receiving groove. The water pump assembly is arranged beside the water pan and comprises a water pump box and a water pump, the water pump box is provided with a water pumping cavity, and the water pump is arranged in the water pumping cavity and used for pumping water in the water pumping cavity. And the other end of the connecting pipe is connected with the water pump box, so that the water receiving tank is communicated with the water pumping cavity. According to the technical scheme, the water pump can be conveniently disassembled, assembled and overhauled, and working efficiency is improved.

The invention discloses a chemical regeneration method of waste polyester, which comprises the following steps: adding waste polyester into ethylene glycol, carrying out a depolymerization reaction, carrying out filtering impurity removal, decoloration, cooling crystallization and separation on the obtained depolymerization reaction liquid to obtain a solid product which is a mixture of BHET and BHET dimer, and directly carrying out a condensation polymerization reaction to prepare regenerated polyester. According to the method disclosed by the invention, the solid impurities filtered and removed when the BHET is purified by adding water are found to be BHET dimers for the first time, and the mixture of the BHET and the BHET dimers is directly used as a raw material to prepare the RPET through polymerization without removing the solid impurities, so that the process is simplified, and the cost is saved. The post-treatment steps are simple, a large amount of water does not need to be added to purify BHET, and the solvent ethylene glycol can be recycled through simple treatment. The steps from waste polyester depolymerization to polymerization for preparation of rPET are few, the process is short, the energy consumption is low, the yield is high, and the method has important significance for high-efficiency recovery of PET and green economic technology popularization.

The invention belongs to the technical field of environmental protection, and discloses a method for rapidly and efficiently removing and recycling polycyclic aromatic hydrocarbon in water and a carbon-based adsorbent, the method comprises the following steps: S1, preparing a modified carbon-based adsorbent; s2, treating the polycyclic aromatic hydrocarbon pollutant wastewater; and S3, recycling the polycyclic aromatic hydrocarbon. According to the preparation method, H3PO4 or ZnCl2 is taken as an activating agent, and an activated carbon base material and an activating process are controlled, so that nano-micron multi-scale modified carbon-based adsorbent particles which are mainly prepared from a large number of long-strip-shaped gap mesopores which are communicated with one another and are approximately distributed in parallel and are auxiliary from a small number of discrete irregular groove-shaped mesopores are obtained; the long and narrow long-strip-shaped gap mesopores of the particle are matched with the irregular groove-shaped mesoporous structure, so that large-size polycyclic aromatic hydrocarbon can be quickly adsorbed and desorbed, and the balance of adsorption and desorption efficiency can be realized; on one hand, the adsorption and desorption efficiency of pollutants is improved, and on the other hand, the dosage of the adsorbent is greatly reduced.

The invention provides a preparation method of a metal-doped sodium titanate negative electrode material, which comprises the following steps: S1, preparation of a hydrolysis solution: dissolving titanyl sulfate and metal A sulfate in water to serve as the hydrolysis solution, the molar ratio of A to Ti being (0.01-0.5): 1; s2, preheating a base solution, namely adding a proper amount of deionized water into a reaction kettle, and preheating to 80-110 DEG C; s3, hydrolysis: in a stirring state, adding a hydrolysis solution into the reaction kettle at a constant speed, and keeping the temperature of a system in the reaction kettle constant; s4, preparing metatitanic acid: cooling the hydrolyzed slurry to room temperature, washing with water, and drying to obtain metal-doped metatitanic acid; and S5, preparing sodium titanate: uniformly mixing a sodium source and the metal-doped metatitanic acid according to the molar ratio of sodium to titanium of 2: 3, calcining in an argon atmosphere, and naturally cooling to obtain the metal-doped sodium titanate. The metal-doped sodium titanate prepared by the method is low in cost, simple and feasible in process and excellent in product performance.

The invention relates to the technical field of biological medicines, in particular to a preparation method of 18F-DOPA and an F-18 labeled precursor of 18F-DOPA. The structural formula of the F-18 labeled phenolic precursor compound is as shown in a formula I: # imgabs0 #; wherein R1 and R2 are hydroxyl protecting groups; r3 is a leaving group; r4 and R5 are independently hydrogen or an amino protecting group; and R6 is a carboxyl protecting group. The invention provides a simple and efficient < 18 > F-DOPA preparation method, and particularly relates to preparation of < 18 > F-DOPA by constructing a key phenol precursor compound and performing a simple and efficient photocatalytic deoxidation fluorination reaction on aromatic hydrocarbon. The method has the advantages of few steps, high yield, simplicity and convenience in operation, good repeatability and good automatic production potential. The radioactive tracer agent 18F-DOPA synthesized by using the method has high specific activity, high chemical purity and high radioactive purity, and has an important value for clinical popularization of 18F-DOPA.

The invention provides a semiconductor power module and a preparation method of the semiconductor power module, and relates to the technical field of semiconductors. The semiconductor power module comprises a bearing substrate, a double-sided metal substrate, a chip, a conductive connecting layer and a connecting wire, the double-sided metal substrate is arranged on the bearing substrate, and the double-sided metal substrate comprises a bearing insulating layer, a first metal layer, a second metal layer and a third metal layer; the chip is arranged on the second metal layer; the conductive connecting layer is sintered and fixed on the surface of one side, deviating from the second metal layer, of the chip and covers an electrode of the chip; the connecting wire is bonded between the conductive connecting layer and the third metal layer. Compared with the prior art, the method has the advantages that the conductive connecting layer fixed through sintering does not need to be additionally welded with copper foil during actual lead bonding, the copper foil preparation and welding steps in the conventional technology are omitted, the lead bonding process can be simplified, the process difficulty is low, and the process cost is reduced.

The invention relates to a preparation method of AnO2 type MOX fuel powder, which comprises the following steps: preparing a mixed actinide eutectic melt from a mixed actinide salt and a urea solid, and carrying out deamination and denitrification / decarbonization on the mixed actinide eutectic melt to directly obtain the AnO2 type MOX fuel powder, the mixed actinide salt consists of tetravalent actinide nitrate and tetravalent actinide oxalate; when the tetravalent actinide nitrate is a plutonium nitrate pentahydrate solid, a thorium nitrate hexahydrate solid or a U (NO3) 4.3-4H2O solid, and the tetravalent actinide oxalate is a thorium oxalate hexahydrate solid, a plutonium oxalate hexahydrate solid or an oxalic acid U (IV) solid, the AnO2 type MOX fuel powder is (ThxPu1-x) O2, (UxTh1-x) O2 or (UxPu1-x) O2 powder. According to the preparation method, plutonium nitrate / thorium nitrate / U (NO3) 4. 3-4H2O and thorium oxalate / plutonium oxalate / oxalic acid U (IV) are directly adopted as raw materials, the preparation process flow of the AnO2 type MOX fuel powder can be simplified, the use of process reagents is reduced, and no process waste liquid is generated, so that the preparation method of the MOX fuel powder, which is simple, convenient, high in production efficiency, free of waste liquid and more economical and green, is provided.

The utility model relates to the technical field of mammary gland puncture, and discloses a positioning device for mammary gland puncture, which comprises a fixing structure arranged above a device shell, a connecting column is inserted into the top end of the inner wall of the device shell in a sliding manner, a spring is fixedly connected to the bottom end of the surface of the device shell, and the other end of the spring is fixedly connected with a cover plate. The bottom end of the cover plate is slidably sleeved with a containing bin through threads, the bottom end of the device shell communicates with a guide needle, the bottom end of a connecting column is fixedly connected with a moving block, the bottom end of the inner wall of the device shell is fixedly connected with a round rod, and the bottom end of a fixing structure is fixedly connected with a puncture needle. Through the cooperative arrangement of the connecting column, the guide needle, the moving block and the reset spring, a doctor can be helped to more accurately determine the target position in the mammary gland, the puncture needle can accurately enter an area needing to be examined or sampled, personal errors are reduced, and the puncture accuracy is improved.

The invention discloses a bathtub cleaning device and a cleaning control method.The bathtub cleaning device comprises an overturning body, an overturning driving mechanism, a water outlet piece and a liquid supply system, one end of the overturning body is rotatably installed on one side of a bathtub, the overturning driving mechanism is in transmission connection with the overturning body to drive the overturning body to rotate, and the water outlet piece is installed on the overturning body; the overturning body can rotate to a horizontal state, when the overturning body is in the horizontal state, the water outlet piece is located above the bathtub, the water outlet piece is connected with the liquid supply system through a hose, the water outlet piece is provided with a plurality of water outlet flow channels, and the water outlet flow channels are distributed in a radial shape from the center to the outside. The effect of cleaning the whole bathtub can be achieved only by using one 360-degree scattering water outlet piece, and after cleaning is finished, the overturning body rotates upwards to return to the position of one side of the bathtub and is vertically stored, so that entering and exiting of the bathtub are facilitated, and volume water is prevented from being overturned.

The invention relates to a battery liquid cooling temperature prediction method based on a thermal resistance network, and the method comprises the following steps: analyzing the heat dissipation condition of a geometric model, and mastering the overall heat flow direction; node division is carried out on the whole model, and preparation is made for constructing a thermal resistance network; thermal resistance value calculation, wherein a thermal resistance network is divided into battery heat conduction thermal resistance, liquid cooling plate heat conduction thermal resistance, cooling liquid convection thermal resistance and enthalpy change thermal resistance; combing the series-parallel connection relation of the thermal resistance between the network units to form a complete thermal resistance network model; the transient temperature of all nodes can be calculated through a calculation formula by calculating the thermal resistance value between the nodes. According to the method, the temperature distribution of the battery under the liquid cooling effect is rapidly and accurately predicted, a reliable basis is provided for real-time temperature monitoring, the problem that the thermal resistance calculation of the liquid cooling plate is complex is solved, and meanwhile the technical problem that the complex calculation problem caused by follow-up structure and parameter optimization can be rapidly solved through the universality of the method is needed to be solved at present. Compared with the prior art, the device has good market prospect and development space.

The embodiment of the invention discloses a text rendering method and device, equipment, a medium and a product, and the method is applied to a server side and comprises the steps that a rendering request for a to-be-rendered text is acquired, and the rendering request comprises a text demand and an effect demand; generating rendering parameters of the to-be-rendered text based on the text demand and the effect demand; obtaining a target canvas for displaying the to-be-rendered text, and determining the layout of the to-be-rendered text in the target canvas according to the rendering parameters; and rendering the to-be-rendered text by using at least one rendering mode in the target canvas according to the layout. According to the technical scheme provided by the embodiment of the invention, the rendering time consumption is reduced while ensuring that the presentation of the rendering text in the canvas is consistent with the expectation.

The invention relates to a CD44 receptor and scavenger receptor-A (SR-A) dual-targeting pharmaceutical composition as well as a preparation method and application thereof. According to the invention, a certain proportion of carrier material with CD44 receptor targeting capability is adsorbed on the fatty acid albumin nanoparticles, and the albumin nanoparticles with CD44 receptor and SR-A dual-targeting capability are successfully prepared. The albumin nanoparticles can simultaneously deliver drugs to activated macrophages with high SR-A specificity expression and fibroblasts or tumor cells with high CD44 receptor specificity expression, provide new treatment schemes and ideas for various diseases including tissue fibrosis and tumors, and have great application value in the field of biological medicine.

The invention relates to the technical field of anti-radiation materials, and particularly discloses an anti-radiation non-woven fabric fiber for shielding and filtering radiation substances and a preparation method of the anti-radiation non-woven fabric fiber. The invention relates to an anti-radiation non-woven fabric fiber for shielding and filtering radiation substances. The anti-radiation non-woven fabric fiber is prepared from the following raw materials in parts by weight: 10 parts of polymer; 4-5 parts of modified rare earth salt; a preparation method of the modified rare earth salt comprises the following steps: adding unsaturated carboxylic acid and rare earth hydroxide into water, carrying out heating reaction and rotary evaporation, then adding 1-ethyl acetate group-3-methylimidazolium tetrafluoroborate, mixing, carrying out suction filtration to remove filtrate, and drying to obtain the modified rare earth salt. The weight ratio of the unsaturated carboxylic acid to the rare earth hydroxide is (1.3-1.5): 1. The anti-radiation non-woven fabric fiber for shielding and filtering radiation substances can be used for preparing anti-radiation materials, and has the advantages that the lead equivalent reaches 0.19 mmPb or above, and the anti-radiation effect is good.

The invention provides a universal data management system and method based on a multi-modal agent, electronic equipment, a storage medium and a program product. The universal data management method based on the multi-modal intelligent agent comprises the following steps: S1, defining and realizing data acquisition, data cleaning, data labeling and a data storage tool set; s2, designing a task Prompt and inputting the task Prompt into the multi-mode intelligent agent; and S3, the multi-modal agent generates a treatment plan according to the treatment task and requirements and comprehensively uses the tool chain to complete the data treatment task. Through the data governance system and the data governance method, the working process is simplified; each team only needs to pay attention to development and maintenance of own tools and does not need to pay attention to the complexity of the whole process, so that task decoupling is realized; the multi-modal intelligent agent can flexibly select and switch different tools, and the more the tools are, the stronger the problem solving capability of the system is; the method is suitable for various data governance scenes, is not limited by specific industries and applications, and has high universality.

The invention relates to a preparation method and application of a composite catalyst for catalyzing toluene oxidation. The method comprises the following steps: step 1, dissolving K2FeO4 in water, adding a manganese salt compound, and stirring evenly to obtain a solid-liquid mixture 1; step 2, transferring the solid-liquid mixture 1 obtained in step 1 to a closed container and performing a heating treatment; step 3, filtering the product after the heating treatment in step 2, and washing (repeatedly washing with deionized water or ethanol) to obtain a Mn3O4-Fe2O3 solid; step 4, drying the Mn3O4-Fe2O3 primary solid obtained in step 3 to obtain a Mn3O4-Fe2O3 solid; and step 5, calcining the Mn3O4-Fe2O3 solid obtained in step 4 to obtain the Mn3O4-Fe2O3 catalyst.

The invention discloses a method for preparing 5-hydroxymethylfurfural by rapidly converting high-concentration biomass derived sugar, and belongs to the field of biomass catalytic conversion. The method comprises the following steps: mixing biomass derived sugar with a deep eutectic solvent, and carrying out closed reaction to obtain 5-hydroxymethylfurfural; the eutectic solvent comprises benzyl quaternary ammonium salt, organic acid and a cosolvent, and the organic acid is benzenesulfonic acid or organic dicarboxylic acid with 2-5 carbon atoms; the molar ratio of the benzyl quaternary ammonium salt to the organic acid to the cosolvent is (1-3): (0.5-1.5): (0-5); the concentration of the biomass derived sugar is 5 to 50 weight percent. The benzyl quaternary ammonium salt with a benzene ring is used as a hydrogen bond acceptor, the organic acid and the cosolvent are used as hydrogen bond donors to form the eutectic solvent, and a hydrogen bond network and an acid environment around the biomass derived sugar can be properly regulated and controlled by adjusting the proportion of the benzyl quaternary ammonium salt, the organic acid and the cosolvent, so that high-substrate sugar is efficiently and quickly converted into 5-hydroxymethylfurfural.

The invention discloses a rubber filler, a rubber composite material containing the same, and a preparation method and application of the rubber filler. The rubber filler disclosed by the invention is prepared from polydivinylbenzene microspheres and polydopamine modified white carbon black loaded on the polydivinylbenzene microspheres, wherein the mass ratio of the polydivinylbenzene microspheres to the polydopamine modified white carbon black is 1: (0.5-20). The rubber composite material provided by the invention comprises solution polymerized raw rubber and the rubber filler, wherein the addition amount of the rubber filler is 10-60wt% of the dry basis mass of the solution polymerized raw rubber. According to the invention, the polydopamine modified white carbon black loaded polydivinylbenzene microspheres are used as a filler, so that the problems that white carbon black is easy to agglomerate and the binding force between the white carbon black and rubber is poor are solved. The obtained rubber composite material can be suitable for manufacturing green tires.

The present application relates to a semiconductor laser aging test system and method, the system includes: a power supply; at least two laser test stations for installing lasers to be tested for aging; a laser test device for collecting the optoelectronic parameters of the laser on each laser test station; a mobile device for moving the laser test device to the corresponding laser test station; a switch device, one end of which is connected to the power supply and the other end of which is connected to the laser on each laser test station, and which is used to control the power-on state between the power supply and the laser on each laser test station; a control device, which is connected to the laser test device, the mobile device, and the switch device. During the test, the control device controls the power supply through the switch device to power on the lasers on the laser test station one by one, and controls the laser test device to test the powered lasers; during aging, the control device controls the power supply through the switch device to power on the lasers on the laser test station.

The utility model relates to the field of ice makers, in particular to a positioning structure of an ice maker evaporator distributive pipe, an ice maker comprises an ice cube tray, an evaporating pipe, a shell and a distributive pipe, the evaporating pipe is arranged on the back of the ice cube tray, the ice cube tray is fixed in the shell, and the distributive pipe is arranged above the shell. The positioning structure comprises a first opening and a second opening which are formed in the two sides of the top of the shell respectively, the first opening and the second opening are matched with the water distribution pipe in shape, and the water distribution pipe is erected on the first opening and the second opening. A bulge is arranged in the second opening, a positioning hole is correspondingly formed in the water distribution pipe, and the positioning hole is matched with the bulge; water distribution holes are formed in the water distribution pipes, and the water distribution holes and the positioning holes are all located below the water distribution pipes. According to the positioning structure of the water distribution pipe of the ice maker evaporator, the direction of the water distribution holes does not need to be additionally adjusted when the water distribution pipe is installed through the structure, installation is completed in one step, installation steps of the water distribution pipe are simplified, installation of the water distribution pipe is simpler, and installation efficiency is improved.

The invention belongs to the technical field of organic synthesis and drug intermediate preparation, and relates to a resolution preparation method of a monepantel key intermediate. In the first aspect, the invention provides a preparation method of a compound shown as a formula 3, which comprises the following steps: # imgabs0 #, in which R1 is selected from TMS, TES, TBDMS, TIPS, TBDPS or # imgabs1 #, the reaction is as follows: # imgabs2 # comprises the following steps: step 2, reacting a compound shown as a formula 2 with an ammonia source and a cyaniding reagent to obtain the compound shown as the formula 3; according to the method 2, the reaction is as follows: # imgabs3 # comprises the following steps: step 5, a compound shown in a formula 7 is subjected to the action of ammonia gas to obtain a compound shown in a formula 3; on the second aspect, the invention provides a preparation method of a compound shown as a formula 5, and the reaction is as follows: # imgabs4, in which R1 is as described in the first aspect; the method comprises the following steps: step 3, obtaining a compound shown as a formula 5 from a compound shown as a formula 3 under the action of a resolving agent. The method disclosed by the invention is higher in yield, simpler in post-treatment and simple and convenient to operate, and has a good industrial production prospect.

The invention belongs to the field of chemical industry, and discloses a high-performance monoammonium phosphate production method, which comprises: S1, raw material pretreatment: carrying out pretreatment on phosphate ore and ammonia gas to remove impurities; the pretreated phosphate ore reacts with sulfuric acid to generate phosphoric acid, then the phosphoric acid reacts with ammonia gas to generate monoammonium phosphate, the reaction temperature of the phosphate ore and the sulfuric acid is 80-100 DEG C, the reaction time is 2-6 hours, and the concentration of the phosphoric acid is 0.2 mol.L <-1 >-2 mol.L <-1 >; s3, crystallization: cooling and crystallizing to obtain monoammonium phosphate crystals; s4, separation: separating the monoammonium phosphate crystals from the mother liquor; s5, drying: carrying out drying treatment on the separated monoammonium phosphate crystals; and S6, packaging: packaging the dried monoammonium phosphate to obtain a finished product. According to the invention, the purity and production efficiency of monoammonium phosphate are greatly improved, the production process flow is reduced, and the energy consumption and environmental pollution are reduced.

The utility model provides a computer CPU radiator, and belongs to the technical field of computers. Comprising a heat dissipation fan and a heat pipe radiator fixedly connected with the heat dissipation fan, the heat pipe radiator comprises heat dissipation fins and a heat dissipation guide pipe, a heat conduction base penetrates through the middle of the heat dissipation guide pipe, a fixing fastener is connected to the top of the heat conduction base, the bottom of the heat conduction base is sleeved with a dust cover, and the dust cover is clamped to the heat conduction base; the upper end of the silicone grease coating mechanism is linked with the fixing fastener, and the lower end of the silicone grease coating mechanism is linked with the dustproof cover. The dustproof cover is arranged to cover the heat conduction seat, the dustproof effect is achieved, meanwhile, the dustproof cover is connected with the heat conduction seat in a clamped mode, it is avoided that the dustproof cover easily falls off from the heat conduction seat to affect the dustproof effect, the silicone grease coating mechanism is arranged, and the situation that an operator smears improper amount of heat conduction silicone grease is avoided; and meanwhile, quantitative heat-conducting silicone grease can be conveniently coated at the bottom of the heat-conducting seat, and the mounting efficiency is improved.

The utility model discloses a stroke-increasing type cylinder cover three-groove clamping clack press-fitting tool, and belongs to the technical field of range extender assemblies for new energy automobiles. The problems that compared with a single-groove valve clamping flap, a three-groove valve clamping flap of a new energy range extender is difficult to press and cannot be manually pressed are solved, meanwhile, eccentric wear of a valve and a valve seat can be effectively avoided, the installation quality is guaranteed, and the performance of a range extender assembly is improved. The pressing head is arranged above the cylinder cover overturning and positioning mechanism, the pressing head is installed on the pressing mechanism, the pressing mechanism is horizontally installed at the upper end of the pressing table in a sliding mode through a sliding rail, and the pressing head is driven by the pressing mechanism to press the valve clamping flap on the valve rod. According to the utility model, the top surface of the spring is pressed below the valve clamping groove by manually operating the press-fitting device, the valve clamping flap is released by manually pushing the clamping flap shifting sheet, the pressure head is reset upwards, the clamping flap moves into the valve clamping groove along with the valve spring seat under the action of the elastic force of the valve spring, and the press-fitting of the clamping flap is completed.