5730 results about "Material consumption" patented technology

The invention discloses a device and technique for producing cyclohexane by benzene hydrogenation. The device for producing cyclohexane by benzene hydrogenation comprises a reactor, a superfine bubble generator and a bubble breaker, wherein the reactor is provided with a first containing cavity; the wall of the first containing cavity is provided with a feed port, a circulation discharge port, a circulation return port and a gas phase outlet; the superfine bubble generator is provided with a second containing cavity; the wall of the second containing cavity is provided with a return port and a gas phase outlet; the return port of the superfine bubble generator communicates with the circulation return port of the reactor; the bubble breaker is arranged in the second containing cavity; the bubble breaker is provided with a gas phase inlet and a liquid phase inlet which communicates with the circulation discharge port of the reactor; and the gas phase inlet of the bubble breaker communicates with the gas phase outlet of the reactor. The device disclosed by the embodiment of the invention has the advantages of high mass transfer efficiency, high reaction rate, short reaction time, low material consumption and energy consumption, simple structure, low manufacturing cost and low maintenance cost.

The invention relates to a micro-interface enhanced reactor bubble scale structure-activity regulation and control model building method. The diameter dmax of the largest bubble of a micro-interface enhanced reactor and the diameter dmin of the smallest bubble of the micro-interface enhanced reactor serve as independent variables, the average diameter d32 of the bubble Sauter serve as a dependentvariable, and a numerical relationship is built; based on the Kolmogorov-Hinze theory, the relationship between the diameter dmax of the largest bubble of the micro-interface enhanced reactor, the diameter dmin of the smallest bubble and the parameters of the reactor is built. According to the method, the reactor bubble scale is associated with the structural parameter, the operation parameter andthe physical property parameter of the reactor by using specific numerical relationship, the numerical relationship has the guiding significance for the design of the reactor and can be applied to avariety of reactors, the versatility is good, by means of a bubble scale regulation and control model built through the method, by adjusting the structural parameter and the operation parameter of thereactor, and the maximization of energy efficiency and material efficiency in the reaction process can be achieved, or under the condition that reaction targets, energy consumption and material consumption are given, a high-efficiency reactor structure is designed.

The invention provides a method for producing aluminum oxide and co-producing active calcium silicate through high-alumina fly ash. The method comprises the following steps that: the high-alumina fly ash firstly reacts with a sodium hydroxide solution to carry out pre-desilication to obtain a liquid-phase desiliconized solution and a solid-phase desiliconized fly ash; lime cream is added to the liquid-phase desiliconized solution to carry out a causticization reaction, the resulting solid phase is active calcium silicate which is prepared through carrying out filter pressing, flash evaporation and drying to obtain the finished product; limestone and a sodium carbonate solution are added to the desiliconized fly ash to blend qualified raw slurry, then the blend qualified raw slurry is subjected to baking into the clinker, the liquid phase generated from dissolution of the clinker is a crude solution of sodium aluminate; the crude solution of the sodium aluminate is subjected to processes of first-stage deep desilication, second-stage deep desilication, carbonation, seed precipitation, baking and the like to obtain the metallurgical grade aluminum oxide meeting requirements. According to the present invention, the defects in the prior art are overcome; purposes of less material flow and small amount of slaggling are achieved; energy consumption, material consumption and production cost are relative low; extraction rate of the aluminum oxide is high; the calcium silicate with high added value is co-produced; the method provided by the present invention can be widely applicable for the field of chemical engineering.

The invention discloses a method for recovering cobalt, nickel and manganese from waste lithium cells. Most of the conventional recovery methods can hardly guarantee the product quality. The technical scheme adopted by the invention is as follows: (1) the anode materials of waste lithium cells are immerged in low-concentration alkali solution, and because the anode materials do not react with the alkali solution, the anode materials shed from aluminum sheets to become black powder; (2) for the black powder, dilute sulfuric acid is first adopted for low-acid dissolution, Na2SO5 or Na2SO3 or Fe powder added with concentrated sulfuric acid is then adopted for reduction and dissolution, and finally, 3 to 6mol / L of sulfuric acid is adopted for high-acid dissolution; (3) solid-liquid separation is carried out on the substance obtained in step 2; (4) reagent is adopted for precipitating and deeply removing alkaline earth impurities. The method has the advantages of simple operation, low auxiliary material consumption, high product purity, high metal yield and no environment pollution, and is an ideal method for recovering cobalt, nickel and manganese from waste lithium cells.

A powderfree medical film glove comprising an elastomer base layer having a sprayed, intermittent coating formed on the hand-contacting surface of the glove. The glove of the present invention improves donning by reducing intersurface tack, improves tactile sensory transmittance, and reduces unnecessary material consumption.

The invention relates to a synthesized recovery method for waste positive plates of iron phosphate lithium batteries. The method comprises the following steps: collected waste positive plate material is mechanically crashed into fragments; the fragments are positioned in a welding furnace which is protected by vacuum atmosphere, inert gases and / or reducing gases and / or nitrogen and are heat processed in the temperature of 150-750 DEG C; aluminum foil basal bodies are separated from the fragments after heat process by adopting mechanical separation or ultrasonic concussion to obtain a mixture of iron phosphate lithium positive material, conduction agent and caking agent giblets; the mixture of iron phosphate lithium anode material, conduction agent and caking agent giblets is roasted for 8-24 hrs in 80-150 DRG C; the mixture after roasting is classified to control the grain diameter of the powder material to be not more than 20 microns, and the D50 is controlled to be 3-10 microns so as to obtain iron phosphate lithium positive recovery material. The method has simple technique, takes effect fast and reduces the material consumption and production cost of a manufacturer.

In solid freeform fabrication processes that make use of a removable support material, pre-calculation of the amount of support material needed for a build is difficult (inaccurate or slow) because the digital data for generating the support material is often not generated until the build is in progress. A method is proposed that has been shown to generate rapid and accurate estimates of the amount of both build and support material needed before a build begins, to accurately predict before a build begins when replenishment materials are needed, and to track material consumptions over time.

The invention discloses a method for cultivating wood-rotting fungi. The raw materials for cultivating the wood-rotting fungi comprise the following components of: 45-55 parts of cotton stalk crumb, 8-20 parts of fine sawdust, 8-20 parts of corncob, 5-20 parts of bran coat, 4-7 parts of bean dregs, 5-11 parts of pure chicken manure, 0.5-1.5 parts of phosphate fertilizer, 0.5-1.5 parts of plaster, 1-5 parts of lime and 8-20 parts of cotton seed hull. The raw materials in weigh ratio are cultivated to generate the wood-rotting fungi according to the steps of adding water in the raw materials and uniformly stirring, building pile and fermenting, producing an inoculation bacterial bag and generating mushroom. According to the method disclosed by the invention, the consumption of the cotton seed hull is reduced; and cotton straws are used to replace the cotton seed hulls and are simultaneously matched with the fine sawdust and the corncob to produce a cultivation raw material of the wood-rotting fungi. The method has the characteristics of ensuring quick material consumption by hypha during fingi fermentation, robust growth and white and density, compact produced fruiting body and rounding mushroom shape. According to the method, the labor and time are saved, the cost is reduced and the yield is increased.

The invention relates to preparation methods of bis(fluorosulfonyl)imide and alkali metal salts thereof. The bis(fluorosulfonyl)imide is prepared by subjecting bis(chlorosulfonyl)imide to react with a fluorinating agent namely hydrogen fluoride. The alkaline metal salts of bis(fluorosulfonyl)imide is prepared by subjecting bis(chlorosulfonyl)imide and alkali metal halides to react with hydrogen fluoride taken as the fluorinating agent and the solvent. The preparation methods can reduce the raw material costs, reduce the material consumption and generation of wastes, improve the raw material utilization rate, product yield, and product purity; moreover, the product purification is easier, the preparation technology process is more concise and more efficient, and the preparation methods provides a very good technical foundation for massive industrial production of bis(fluorosulfonyl)imide and alkali metal salts thereof.

The invention discloses an integrated motor starting and protecting device with an improved structure, and belongs to the technical field of single-phase alternating current motor starting and protecting devices. The device comprises a shell, a shell cover, an overload protector module, a power consumption-free starter module and an external terminal mechanism, wherein the shell is provided with an overload protector module cavity, a power consumption-free starter module cavity, an external terminal mechanism cavity and a starting controller cavity. The device is characterized in that: the external terminal mechanism cavity comprises a first insert cavity, a second insert cavity, a third insert cavity and a fourth insert cavity; the first, second and third insert cavities are positioned on the same side of the shell; the external terminal mechanism comprises a first insert, a second insert, a third insert and a fourth insert; the first insert is inserted into the first insert cavity; the second insert is inserted into the second insert cavity; the third insert is inserted into the third insert cavity; and the fourth insert is inserted into the fourth insert cavity. The device has the advantages of reducing the material consumption of the external terminal mechanism, meeting industrial production requirements and reflecting resource saving, along with compact structure, convenience for assembly and high assembly efficiency.

In the pneumatic radial tire of the present invention, a total strength K0 of a belt layer 20 in a circumferential direction of the tire per unit of width at a tire equator surface position P0 is set greater than a total strength of the belt layer 20 in the circumferential direction of the tire per unit of width at a width position P2 corresponding to ⅔ of a maximum width of the belt layer having the tire equator surface CL as a center. In this way, it is possible to suppress the quantity consume of material in the belt layer 20, and to suppress the amount of expansion of tread rubber in a tread central region in the circumferential direction thereof when a standard internal pressure is charged and when the tire is rotated at high speed, thereby suppressing the growth of tire diameter. Since the expansion amount of the tread rubber in the circumferential direction is suppressed, the tension of the rubber is reduced. Therefore, it is possible to increase the resistance of the tread against the sticking of foreign matter, and even when foreign matter sticks in the tread, it is possible to suppress the growth of the crack.

The invention discloses a steel plate-tube post combined cofferdam and relative method, which is characterized in that: at least one steel plate post is arranged between two steel tube posts; and nearby steel plate and tube posts are connected by grooves; the depths of steel tube and plate posts are the same. The invention can combine the properties of steel plate and tube posts, to solve the waterproof problem. It can reduce the material consumption and the working time, with better economic benefits.

The invention discloses a foamed ceramics energy saving and heat preservation decorative wall brick and a manufacture method thereof, including the steps of conducting ball milling on 15-65 percent wt of industrial residues, 10-45 percent wt of plastic clay, 15-60 percent wt of solvent, 10-45 percent wt of pore-forming agent with the fineness being 1-100mum and proper amount of water to form slurry; spray drying or dehydration and clay preparation, and forming powder material or clay segment through staleness; and implementing pressure forming to make billet which is burned under heat preservation at temperature of 1140-1240 DEG C to finally form the foamed ceramics wall brick. The wall brick can be used not only for the heat preservation and decoration of external walls, but also for indoor heat preservation and decoration, and the external wall and the indoor space can realize the organic combination of uniform heat preservation and decoration, which agrees with the development direction of heat preservation material industry of external walls. The wall brick has the advantages of: I. high temperature resistance, acid and alkali-resistance, good chemical stability, no ageing, strong durability, long service life, no generation of heat channel and good adhesive fixity; and II. difficult water seepage and crack, strong anti-corrosion capacity, uneasy deformation and damage, simplification of mounting, laying and sticking procedures, convenience for construction, relief of labor intensity and decrease of material consumption quantity.

A method for manufacturing an LED light source is characterized by sequentially comprising the following steps that (a) a substrate is made of transparent materials, wherein a groove is formed in the surface of the substrate; (b) the bottom of the groove is coated with fluorescent gum; (c) an LED chip is fixed to the fluorescent gum at the bottom of the groove; (d) electrodes of the LED chip are connected in series by a metal wire; (e) the LED chip and the metal wire are coated with fluorescent gum. According to the method for manufacturing the LED light source, a traditional manufacturing process of an LED light source is simplified and material consumption is reduced.

The invention relates to a micro-interface enhanced reactor bubble scale structure-activity regulation and control model building method. The diameter dmax of the largest bubble of a micro-interface enhanced reactor and the diameter dmin of the smallest bubble of the micro-interface enhanced reactor serve as independent variables, the average diameter d32 of the bubble Sauter serve as a dependentvariable, and a numerical relationship is built; based on the Kolmogorov-Hinze theory, the relationship between the diameter dmax of the largest bubble of the micro-interface enhanced reactor, the diameter dmin of the smallest bubble and the parameters of the reactor is built. According to the method, the reactor bubble scale is associated with the structural parameter, the operation parameter andthe physical property parameter of the reactor by using specific numerical relationship, the numerical relationship has the guiding significance for the design of the reactor and can be applied to avariety of reactors, the versatility is good, by means of a bubble scale regulation and control model built through the method, by adjusting the structural parameter and the operation parameter of thereactor, and the maximization of energy efficiency and material efficiency in the reaction process can be achieved, or under the condition that reaction targets, energy consumption and material consumption are given, a high-efficiency reactor structure is designed.

The invention discloses a Brazilian split method for measuring an elastic parameter of a rock under an extension condition, which comprises the steps of: A. horizontally putting a machined disc-shaped sample between the load bearing plates of a press machine by using a Brazilian disc split method, placing a hard steel wire respectively between the upper load bearing plate and the sample and between the lower load bearing plate and the sample, arranging a filler strip perpendicular to the symmetrical surfaces of the sample, and applying pressure on the upper load bearing plate and the lower load bearing plate to make the sample generate tension perpendicular to the action directions of an upper load and a lower load; B. carrying out analysis by using the Hooke's law in classical elasticity mechanics by combining specific conditions of the Brazilian split method; C. analyzing the stress condition of the rock and the measurement principle in the Brazilian disc split method; and D. obtaining the strain in the stress direction according to the Hooke's law from the stress condition sigma3=0, measuring epsilon1 and epsilon2, obtaining the elastic parameter of the rock sample, and arranging a strain gauge in the center position of the rock sample for measurement of epsilon1 and epsilon2. The method has the advantages of easiness for operation and use, clear principle, low material consumption, and the like. The method is suitable for wide popularization and application.

A method for constructing pipe piles while drilling for building or bridge foundations. The construction steps are to cover high-strength prestressed concrete pipes or steel pipes with drill pipes on the ground first, and install impactors and reaming retractable drill bits at the front ends of the drill pipes. , Follow the pipe while drilling, follow the pipe retaining wall, drill to the design elevation, stop drilling, withdraw from the reaming to shrink the drill bit, use the mud pump to clean the mud and sediment, pour concrete into the pipe, and simultaneously inject pressure grout to the outside of the pipe wall , stop when concrete and grout reach the ground; the object of the invention is to propose a construction method with fast construction speed, reliable quality, less material consumption, high bearing capacity of piles, mechanized operation, and environmental protection. In the construction method of bored cast-in-place piles, the use of mud retaining walls pollutes the environment, the hole is easy to collapse during the drilling process, the quality of concrete pouring is unstable, and the prestressed pipe piles are easy to cause the soil to rise. The strength of the pile body constructed by the invention is high. , There is no sediment at the bottom of the pile, and the pile end is completely rock-socketed, which can reach more than 2 times the bearing capacity of the same diameter bored pile.

The invention discloses a bridge single column pier assembled box bracket system, which is characterized in that box bracket plates are arranged on two sides of a pier below a capping beam; and each bracket plate comprises an upper longitudinal beam, a lower longitudinal beam and diagonal bracings symmetrically arranged, wherein the upper longitudinal beam, the lower longitudinal beam and the diagonal bracings are manufactured by profile steels; and the bracket plates on the two sides of the pier are pulled and fastened by a round steel pull rod to form an integrated bearing system in order to improve the whole stability of the bracket. The system is stably supported on the pier by a round steel rod, so that the anti-overturning capability of the bearing system is improved in the construction process of the capping beam. The box bracket has the advantages of simple and convenient structural calculation, good stressing condition and safety and stability, little material consumption, high working efficiency, low cost, good economy and the like, and the construction is not limited by terrain.

The invention discloses a composite beam, which comprises reinforcement concrete prefab beam and section steel joints, wherein both ends of reinforcements of the reinforcement concrete prefab beam are connected with section steels, one end of section steel joint is pre-imbedded into the wall pier concrete and is connected to the reinforcement inside the wall pier, the other end of the section steel joint is remained outside the wall pier, both ends of section steel of the prefab beam and the section steel joints are connected to form the composite prefab beam. Due to the composite beam, the section steel joints and the wall piers are integrated with good connection integration property of the beams and simple process, wherein both ends of the section steel is connected with the section steel joints of the prefab beam to form composite beam, the connection between the prefab beam end and the section steel joints adopts welding, bolt connection type, and the like, the composite beam production can be industrialized, needs no framework, has small materials consumption and rapid construction progress.

Disclosed is a quick startup method of an urban sewage anaerobic ammonium oxidation bioreactor, which belongs to the fields of urban sewage disposal and resource utilization. The method aims to solve the problems of high energy and material consumption, and difficult startup of the anaerobic ammonium oxidation process applied to the urban sewage denitrogenation treatment of the current urban sewage biological denitrogenation method. The method comprises: adopting a biomembrane filter chamber system under normal temperature, directly inoculating anaerobic ammonium oxidation bacteria, making the biomembrane filter chamber system adapt to the acclimation and amplification environment of anaerobic ammonium oxidation bacteria through adjusting the equipment operation parameters of the reactor, and rapidly realizing the successful startup of the urban sewage anaerobic ammonium oxidation biological autotrophic denitrogenation reactor. The method applies a new discovery in science of quick startup of the reactor implementing a simple process of anaerobic ammonium oxidation biological autotrophic denitrogenation to the high-efficiency and low-consumption denitrogenation treatment of urban domestic sewage for the first time, and has the advantages of short startup period of the reactor, stable system operation, excellent effects of sewage disposal and low cost.

The invention discloses a preparation method of a super-hydrophobic active carbon modified material. The material is prepared by applying a chemical liquid phase impregnation method, using trimethylchlorosilane as a modifier, using absolute methanol as a solvent, respectively using pre-processed coal columnar active carbon and coconut shell granulated active carbon as carriers, impregnating via liquid phase, drying in vacuum, and commonly blowing air and drying. The hydrophobic performance is respectively detected through a contact angle test and a liquid water adsorption experiment; and the adsorption is checked by using benzene adsorption experiment and an iodine value test. The invention has the advantages of simple preparation process, less material consumption and wild preparation condition; and the preparation method is carried out at room temperature. The prepared active carbon modified material has super-hydrophobic surface chemical performance and great pore volume, which makes up the shortcomings of easy absorption of moisture in the multi-pore carbon material with high humidity and small absorption capacity of the target organic matters; and the prepared active carbon modified material is easy to recycle and can be repeatedly recycled, so that the industrial cost is reduced and a foundation is further laid for the industrialized application.

The invention relates to a taste cell sensor using a surface acoustic wave resonator. The taste cell sensor includes the surface acoustic wave resonator, which is encapsulated in a metal shell by vacuum. The surface acoustic wave resonator adopts ST cut quartz as a piezoelectric substrate material, is prepared by a photolithography process, the emitted surface acoustic frequency is 433MHZ. The taste cell sensor also includes a silk-screen printing carbon electrode, which is in series connection with the surface acoustic wave resonator. The silk-screen printing carbon electrode is firstly modified by amino acid and then coated with an NCI-H716 cell suspension solution. The taste cell sensor provided by the invention has the advantages of small volume, practicability and convenience, fast electrode response, high sensitivity, good batch repeatability, low cost and the like, can achieve high frequency, and can realize rapid real-time detection. The preparation method has the characteristics of simple preparation process, small material consumption, high process repeatability and controllability, and is convenient for batch production.

The invention relates to enveloping acidifier and the preparation method thereof. The enveloping acidifier comprises acidifier solid microparticles and an enveloping layer on the surface of the acidifier solid microparticles, wherein the enveloping layer comprises an ethyecellulose (EC) and hydroxypropyl methyl cellulose (HPMC) composite layer and an enteric-coated polyacrylic resin layer. In theinvention, sustained-release coating material with good film forming property and the coating process are adopted, so that excessive enveloping material consumption is avoided, the weight of the acidifier solid microparticles is increased slightly, the large total effective acid of the acidifier is kept, and the acidifier has good sustained-release effect.

The invention relates to a method for extracting V2O5 from stone coal vanadium ores, which is characterized in that the stone coal vanadium ores are grinded, subjected to high-temperature roasting, and directly leached out by a dilute sulfuric acid; slag is washed and filtered by water; and a leached solution is extracted by extract containing an N235 extractant, and subjected to back-extraction, ammonium metavanadate precipitation, filtration, washing, deamination and roasting to obtain the V2O5. The method greatly reduces pollution of waste gas and waste water. Compared with the prior salt roasting (sodium modification) technology, the technology has a reasonable design structure, high comprehensive utilization rate of resources, proper material consumption, strong controlled ability of the process, high product quality and high automation degree of the technological flow, and is convenient for large-scale industrial production. The technology does not have exact demands on the raw ores and has good adaptability. The overall yield of the technology is high, reaches more than 85 percent, is on the advanced level in China currently, and is improved by approximately 25 percent compared with the overall yield of sodium modification roasting technology of other vanadium smelting plants in Hunan province.

The invention relates to a heat curing in-situ forming high-conductivity silicon rubber composition and application thereof. The composition is composed of the following components: (1) 60-90 parts by weight of mixture of ethylene end-blocked polyorganosiloxane in the same or different viscosities; (2) 10-35 parts by weight of silicone oil containing hydrogen; (3) 1-25 parts by weight of one or multiple R<6>cSiX4-c or partial hydrolytic condensation product thereof; (4) 100-500 parts by weight of metal base conductive filler with the average particle size of 10-150 Mum; (5) 0.01-10 parts by weight of organic metal compound or chelate which contains chloroplatinic acid or contains platinum or palladium and is used as metal base catalyst of heat curing; (6) 1-30 parts by weight of reinforcing filler or functional filler. The invention is applied to the shielding case part of RF equipment requiring electromagnetic shielding and sealed environment. The invention reduces material consumption, simplifies production technology and improves production efficiency and cost performance of product.

The invention discloses a real-time material distribution method in a mechanical product assembling process, which is characterized in that: according to the production plan on the same day, calculating to obtain all required parts; by considering the storage capability, the existing amount, the material lead time and the product cycle time of each part on each station, calculating a material distribution scheme; distributing the parts in time on small batches according to the obtained distribution scheme; simultaneously, tracking the on-site production situation by an MES system in real time; recording manufacturing product situation and the material consumption situation of each station; and timely feeding back production plan information and station inventory information. The method of the invention can realize on-time material distribution, feeds back and adjusts the distribution scheme in time according to real-time working condition, can improve production efficiency and lowers product cost.

The present invention discloses a high-performance flame-proof abrasion-resisting composite material which is prepared mainly by the components of particle material alumina or / and corundum or / and mullite 50-70 parts; hard particle 5-25 parts; binding agent 8-25 parts; aluminum oxide micro powder or / and silicon micronized quartz powder 8-15 parts and surfactant 0.1 parts. The composite material is developed according to the scientific knowledge obtained in the long-term researching and producing for the flame-proof abrasion-resisting composite material in our company and absorbing the latest accomplishment of the present material science, the material has the advantages of increasing the high-temperature bonding strength and toughness of the composite material, increasing the binding ability of the interface between the composite material and the equipment, facilitating the two sides forming a compact and high-strength whole body, optimizing the capability of the composite material in the high-temperature state, prolonging the service lifetime of the equipment, reducing the number of the breakdown maintenance, reducing the material consumption and the labor intensity of the worker thereby obtaining the purpose of increasing the economic benefit of the enterprise.

The invention discloses a process for preparing aluminum oxide and white carbon black by taking high-alumina fly ash as a raw material and adopting a two-step alkaline leaching method, comprising the following process steps of: preparing a sodium silicate solution by carrying out first-step alkaline leaching on the high-alumina fly ash; preparing the white carbon black by carrying out carbonation decomposition on the sodium silicate solution; preparing aluminum rich alkaline liquor by carrying out second-step alkaline leaching on desiliconization fly ash; preparing a sodium aluminate solution through the aluminum rich alkaline liquor; and preparing the aluminum oxide through the sodium aluminate solution, and the like. The invention prevents the high-temperature sintering in the process of the aluminum oxide prepared through the high-alumina fly ash, has low energy consumption and cyclic utilization of the alkaline liquor obtained through the first-step alkaline leaching and the second-step alkaline leaching, little material consumption; and in addition, silicon-calcium slag generated in the process course are used as raw materials for producing wall materials without generating secondary pollution, therefore the invention meets the requirements for clean production.

The invention relates to a method and a device for intelligently controlling precision irrigation and fertilization. The method and the device have the advantages that intelligent control is applied to the field of water-saving irrigation by the aid of the method and the device, so that the problem of high labor and material consumption required by manual operation on water-saving irrigation systems can be solved; fertilizers are applied to crops by the aid of an intelligent control system according to soil types, species of the crops and growing periods of the crops, and accordingly the method and the device are favorable for improving the fertilization precision and saving fertilizers; the fertilizers flow to locations near root systems of the crops along with water, accordingly, the method and the device are favorable for preventing deep-layer loss of the fertilizers, the fertilizer efficiency can be improved, the yield of the crops can be increased, underground water can be prevented from being polluted by the fertilizers and chemical agents, and the problem of agricultural non-point source pollution can be solved.

The invention discloses a drilling machine for metal processing, which comprises a workbench and a drilling device. A reserved drilling hole is opened in the middle of the workbench, and a horizontal clamping device is arranged on the top of the workbench. The workbench Electric lifting columns are fixedly installed on both sides of the top of the table, and the two electric lifting columns are symmetrically arranged on both sides of the horizontal clamping device, and the tops of the two electric lifting columns are connected by a horizontal plate, and the drilling device is fixedly installed on the The middle part of the horizontal plate and both sides of the drilling device are provided with vertical pressing devices. The drilling rig for metal processing is simple in structure and reasonable in design. It can vertically press and horizontally clamp the hardware parts to be drilled through the vertical pressing device and the horizontal clamping device, and can ensure The hardware parts will not be displaced, which not only reduces the loss of materials, increases the accuracy of drilling, but also greatly improves the working efficiency of drilling.