48results about How to "Outstanding advantages" patented technology

The invention relates to a Mn-containing creep-resisting rolled zinc alloy belt material. The material comprises the following components in percentage by weight: 0.5 to 3.0 percent of copper, 0.01 to 2.0 percent of manganese, 0.05 to 0.3 percent of titanium and the balance of zinc and less than 0.05 percent of impurities. An alloy component can also contain the following component in percentage by mass: 0.01 to 0.5 percent of X, wherein the X is at least one of aluminum and rare earth elements (Ce+La). A method for preparing the material comprises the following steps of: smelting by a protective covering method and adding alloy elements in the forms of pure zinc, Zn-Cu, Zn-Ti, Cu-Mn, pure aluminum and Ce+La composite rare earth, wherein a smelting temperature is between 650 and 740 DEG C; pouring at the temperature of between 420 and 480 DEG C; uniformly annealing cast ingots at the temperature of between 350 and 380 DEG C for 6 to 10 hours; performing hot rolling for multiple times at the temperature of between 220 and 280 DEG C, wherein total deformation is between 60 and 95 percent; performing cold rolling, wherein the total deformation is between 50 and 80 percent; and after rolling, annealing at the temperature of between 180 and 200 DEG C for 2 to 3 hours. The alloy of the invention has high creep resistance, hot processing performance and mechanical property and is suitable for the fields of building decoration, transportation, instruments, meters and the like.

The invention provides a method for preparing gold-flower Puer tea by inoculating fungus microorganisms. The method is characterized in that: by the means of inoculating mixed fungi which are mainly eurotium cristatum and adding a fermentation promoter, the blooming of the Puer tea is realized, and the gold-flower Puer tea with gold flowers is prepared. In the production process of the Puer tea, besides of the non-dominant bacteria of the eurotium cristatum, the dominant bacteria including the Puer tea such as aspergillus niger, penicillium notatum, rhizopus and microzyme are also inoculated; and in addition, the fermentation promoter is also added, so that not only the bacteria can be quickly bred, but also the operation and control are convenient; and the tea leaves are fermented and uniformly aged and stable in quality. The gold-flower Puer tea prepared by the method has the advantages that: the beneficial effects of the Puer tea and the eurotium cristatum are perfectly combined; the tea is red, thick and bright and has pure aroma and a mellow taste; other health-care effects are further improved; and the quality is improved in essence compared with traditional Puer tea.

The invention provides an electrospinning direct-writing nozzle capable of controlling starting and stopping, relating to an electrospinning direct-writing nozzle and providing an electrospinning direct-writing nozzle which can automatically controls starting and stopping, reduce the spraying opening voltage, organically combines the spraying and the direct-writing pattern characteristic and completes direct writing of micronano structures in complex patterns. The electrospinning direct-writing nozzle is provided with a hollow sleeve with a nozzle, an adjusting plug with threads, a coil, an armature, a return spring, a probe and an exhaust pipeline, wherein the front end of the hollow sleeve with the nozzle is provided with a spray orifice and an injection hole; the adjusting plug with the threads is arranged at the rear end of the hollow sleeve with the nozzle; the coil is sheathed at the outer side of the hollow sleeve with the nozzle; the armature is arranged in the hollow sleeve with the nozzle; the probe is fixedly connected with the armature; the front end of the probe is positioned in the spraying orifice at the front end of the hollow sleeve with the nozzle, and the rear end of the probe is fixedly connected with one end of the return spring; the other end of the return spring is fixedly connected with the inner end of the adjusting plug with the threads; the exhaust pipeline is arranged on the adjusting plug with the threads; and the inner end of the exhaust pipeline is communicated with the hollow sleeve with the nozzle, and the outer end of the exhaust pipeline is communicated with the outside.

A process for preparing hydrogen gas by catalytic cracking of biologic substance includes preheating air, introducing it to fluidized-bed reactor, burning along with biological substance to generate high temp while introducing water steam into the reactor, fluidizing the most of biologic substance, catalytic gasifying-water-coal gas conversion-tar cracking reactions to generate hydrogen-enriched gas, removing dust by cyclone separator, cracking tar in fixed-bed reactor, and purifying. Its advantages are high conversion and utilization rate of energy, and no environmental pollution.

The invention uses a compound masking technology combining the metal film and photoetching glue layer, realizes the deep etching process to the silicon dioxide. The invention uses photoetching glue and it generates no attaching particles in reaction ion etching process, and the etching selection rate is high of Cr, Al, NI metal masking films when F contained plasma to etch the silicon dioxide. It solves the deficiencies that the etched surface is coarse, radio frequency polarization can not too high, and the speed is slow in mask film etching process with metal film, at the same time, it can avoid the negative caused by using the single photoetching glue. The other character of the invention is: the thickness of the demanded metal film and the photoetching glue is less than the thickness in only using one of then, it can reduce the difficulty of filming process and etching process and the cost, upgrades the photoetching yield and the minimal figure resolution, and it can be realized easily.

The invention provides an intermittent high-rise building external wall automatic fire extinguishing system. The intermittent high-rise building external wall automatic fire extinguishing system comprises a plurality of fire detection devices, a control device, a plurality of fire extinguishing devices and a water supply device. The fire detection devices are distributed on the external wall of a building to form a fire detection network for detecting a fire situation at the outer wall of the intermittent high-rise building and transmitting the obtained information to the control device; the control device is used for acquiring a fire locus position of the intermittent high-rise building external wall according to the fire information of the fire detection devices and automatically controlling the water storage operation of the water supply device and the fire extinguishing operation of the fire extinguishing devices according to the preset procedure; the fire extinguishing devices located on the external wall of the building; each fire extinguishing device comprises a water curtain firefighting spray nozzle and a rain firefighting spray nozzle connected with a firefighting pipe in a controlling mode; the water supply device is connected with each fire extinguishing device through the fire pipe in a controlling mode to supply the water to the fire extinguishing device; the opening and closing of the firefighting pipe are controlled through the control device. According to the intermittent high-rise building external wall automatic fire extinguishing system, the role of effective fire retardance, cooling, isolation and fire fighting is achieved under the situation that the external wall of the building is on fire caused by the fire of some areas of the high-rise building or the external wall of the building is directly on fire, the spread of fire is avoided and the losses are reduced.

The invention belongs to the field of waste battery resource recycling, and discloses a leaching system and leaching method for valuable metal in a waste lithium battery. According to the leaching method, a sulfamic acid-glucose leaching agent is pre-heated, positive electrode powder is added, and stirring and leaching in a reaction kettle are performed, Co (III) and Mn (IV) are reduced to Co (II)and Mn (II) which are dissolved in a leaching liquid with Li<+> and Ni<2+>, Li, Co, Ni and Mn leaching rate in the waste battery positive electrode powder can reach 95% or above, and recycling or reusing of Li, Co, Ni and Mn can be achieved after further processing the leaching liquid. Compared with a traditional leaching liquid, the leaching system has the advantages of greenness, environmentalfriendliness, safe and controllable leaching process and relatively good industrial application prospect.

The invention discloses a method for synthesizing controllable shell isolation silver nanoparticles. According to the controllable shell isolation silver nanoparticles, the silver nanoparticles within the grain diameter ranging from 20 nm to 300 nm serve as inner cores and are coated with dense and even silicon dioxide shells, and the grain diameter of the silicon dioxide shells can be adjusted with the grain diameter ranging from 1 nm to 30 nm. The method includes the following steps that firstly, gold nanoparticles with the grain diameter ranging from 8 nm to 20 nm are synthesized; secondly, the silver nanoparticles with the grain diameter ranging from 20 nm to 300 nm are synthesized; thirdly, the surfaces of the silver nanoparticles synthesized in the second step are coated with the silicon dioxide shells with the grain diameter ranging from 1 nm to 30 nm. According to the silicon-dioxide-coated silver nanoparticles acquired through the method, the shells are composed of silicon diode with chemical inertness, electrics insulation and optically-transparent characteristics, and the silver nanoparticles are extremely thin and dense.

The invention relates to a reflection type time-of-flight mass spectrometer with a quality filtering function. The reflection type time-of-flight mass spectrometer comprises an ion reflection electrode which a pulse voltage is applied to. The reflection type time-of-flight mass spectrometer also comprises a vacuum cavity, an ion source, an ion lead-out electrode, an acceleration zone, a field-free flight zone, a reflector and an MCP ion detector. The method for realizing quality filtering by use of the time-of-flight mass spectrometer comprises the following steps: before irons whose mass-to-charge ratio needs to be filtered passes through an ion deceleration electrode and reaches the ion reflection electrode, the pulse voltage with a certain pulse width and amplitude is applied to the ion reflection electrode, the ions whose mass-to-charge ratio needs to be filtered are totally or partially sprayed on the ion reflection electrode and are lost, and other ions are reflected back to the field-free flight zone and is detected by the MCP ion detector. The reflection type time-of-flight mass spectrometer is provided with the quantity filtering function. By using the reflection type time-of-flight mass spectrometer and the method, the accuracy in measuring field weak signals can be effectively improved, the instrument dynamic scope is increased, irons of several mass-to-charge ratios can be selectively detected, the background noise is reduced, and the instrument detection sensitivity is improved.

The invention discloses a method for synthesizing diethanol amide and belongs to the technical field of synthesis of amides compounds in organic chemistry. According to the method, fatty acid methyl ester and diethanol amine which are used as raw materials are subjected to amidation under the action of catalyst to form diethanol amide, wherein the molar ratio of fatty acid methyl ester to diethanol amine is 1:(1.0-1.1), the catalyst is sodium methoxide or potassium hydroxide, and the adding amount of the catalyst is 0.5 to 1.0 percent based on the total mass of fatty acid methyl ester and diethanol amine. According to the method, diethanol amide of which the molar ratio of fatty acid methyl ester to diethanol amine is 1:1 can be synthesized by a one-step method; and the process is simple, and materials are low in cost.

The present invention relates to an input-parallel and output-series Sepic-Cuk type combined direct-current converter. The converter includes a lithium battery, a basic Sepic converter, a basic Cuk converter and loads. Essentially, the basic Sepic converter unit and the basic Cuk converter unit are combined in an input-parallel and output-series manner so as to form the combined direct-current converter of the invention. The lithium battery is shared. According to the combined converter of the invention, based on input-parallel and output-series, a voltage transformation ratio which is twice of the voltage transformation ratio of a traditional basic converter can be obtained; the maximum voltage stress of switch tubes and output filtering capacitors is decreased to half of that of a high voltage end; two output ports are fully decoupled, an output end has three voltage levels totally, so that the connection of the converter into loads with different voltage levels can be facilitated; an interleaving control technology is adopted, input current ripples can be effectively reduced, so that the capacity of input filtering capacitors can be decreased; and since the basic Sepic converter and the basic Cuk converter are adopted, a main circuit structure and a control design are relatively simple.

The invention discloses a method for measuring the circulation area of complex profile hole, main contents of which are that the air pressure P1* in front of the workpiece profile hole to be measured is adjusted to the supercritical pressure ratio, namely not less than 2 times of atmospheric pressure Po in order to ensure that air passes through the profile hole at a critical speed, and the air after further expansion is discharged into the atmosphere through an exhaust pipe. Measuring the air pressure P1* in front of the profile hole, the air temperature T1* and the air flow Ga through a pipeline, calculating the coefficient m of the air through the air adiabatic index K and the gas constant R, and substituting these data into the flow equation of compressible flow to calculate the circulation area of the complex profile hole to be measured. Compared with the prior art method of measuring the area of the profile hole with the air power, the method disclosed by the invention, which measures the circulation area of the complex profile hole with the supercritical pressure ratio, has the advantages of the high measurement precision, the large measurement range, the strong commonality of a measuring device and the convenient operation, and solves the problem of precise measurement of the circulation area of the complex profile hole with the small circulation area.

The invention discloses a partially-crosslinked and partially-branched copolymer oil displacement agent and a preparation method thereof. The copolymer oil displacement agent mainly comprises components of raw materials as follows: acrylamide, potassium persulfate, sodium bisulfite, 2-(dimethylamino) ethyl methacrylate and comonomers. The preparation method comprises steps as follows: the components of the raw materials are dissolved in deionized water with the formula quantity not less than 1.0 time of the formula mass of all the components, and solutions of all the components are prepared; an acrylamide solution, a comonomer solution and a 2-(dimethylamino) ethyl methacrylate solution are added to a reactor and stirred, nitrogen is introduced at the temperature of 10 DEG C-60 DEG C while stirring is performed, oxygen in a container is removed and exhausted, a potassium persulfate solution and a sodium bisulfite solution are added, introduction of nitrogen and stirring are stopped when a reaction system starts polymerization and the viscosity is remarkably increased, and a colloidal oil displacement agent is prepared when a polymerization reaction realizes constant temperature. The partially-crosslinked and partially-branched copolymer oil displacement agent has good elasticity and anti-shear ability and excellent ageing-resistant performance and salt resistance under the high-temperature and high-salt conditions.

The invention relates the preparing method of N, N'- 3-methyl phenyl)-N, N' -diphenylbenzidine, belonging to organic semiconductor hole transport material preparing technique field. The method comprises the following steps: using halogeno-benzene and 3- methyl diphenylamine as raw material, using toluene as dissolvant, using cuprous iodide with N-dimethyltoluamide or diphyridyl as accelerating agent, carrying out reaction in the potassium hydrate system, decolouring, washing, drying, distilling, getting bullion, purifying with the mixture of toluene, hexane and methanol, getting the product. The invention has the advantages of reducing cost, and improving quality. The product can be used as the key material of organic photoconductive drum.

The invention aims to provide a method for preparing a cationic alkyl polyglycoside surfactant with high service performance, which is reasonable in process. The structure of the cationic alkyl polyglycoside surfactant is shown below, wherein R1 and R2 are long-chain alkyls having 8 to 22 carbon atoms, preferably 12 to 16 carbon atoms; and n which is the average degree of polymerization of alkyl polyglucoside is 1.1 to 3.0, preferably 1.5 to 2.0. In the invention, by reasonably regulating the addition mode and mixing ratio of reaction raw materials and optimally selecting a reaction temperature and a reaction time, the technique of the invention is reasonable, energy-saving and environment-friendly, no toxic and harmful matters are produced in a process, the technique is simple, the reaction conditions are mild, the requirements on equipment are low, cost is reduced effectively, more equipment investment and energy consumption are reduced, industrialization can be realized more easily, the product quality is more stable, and the performance is higher.

The invention provides an X80 hot-rolled steel plate for a hot bending elbow parent pipe. The X80 hot-rolled steel plate comprises the following components of, in percentage by mass, 0.07-0.11% of C,0.10-0.45% of Si, 1.65-1.85% of Mn, 0.020-0.060% of Al, 0.025-0.075% of Nb, 0.010-0.025% of Ti, 0.03-0.06% of V, less than or equal to 0.45% of Cr, less than or equal to 0.35% of Cu, 0.15- 0.45% of Ni, 0.15% -0.40% of Mo, less than or equal to 0.015% of P, less than or equal to 0.005% of S, less than or equal to 0. 0060% of N, less than or equal to 0.0005% of B, and the balance Fe and inevitable impurity elements. The yield strength (Rt0.5)of the obtained X80 hot-rolled steel plate for the hot bending elbow parent pipe is larger than or equal to 580 MPa, the tensile strength (Rm) is larger than or equal to 650 MPa, the yield ratio (Rt0.5 / Rm) is less than or equal to 0.90%, the elongation (A) is larger than or equal to 30%, the Sharpy impact energy at minus 30 DEG C is larger than or equalto 220 J, the Sharpy impact energy at minus 60 DEG C is greater than or equal to 200 J, and the hardness is less than or equal to 265 HV10.

The invention discloses a method for preparing fabric softening agent. The method is characterized in that: long-chain fatty alcohol and unsaturated acid undergo esterification reaction, then the esterification product and alcohol amine undergo addition reaction to form secondary amine, the secondary amine and halogenated hydrocarbon undergo substitution reaction to form tertiary amine, and the tertiary amine and a quaternization reagent are reacted to form the fabric softening agent; and the fabric softening agent has the following structure, wherein R1 is alkyl of C1 to C4 or -CH2CH(OH)CH3, R2 is straight-chain or branch-chain alkyl of C1 to C3, R3 is saturated alkyl with 12 to 22 carbon atoms, x and y are 2 to 6, and X represents negative ions combined with positive ions. The product prepared by the method is a double-ester Gemini quaternary ammonium salt softening agent; by using the Gemini structure and introducing the alcohol ethyl, the problems of poor dissolubility, strong greasy feeling and poor wetting property and air permeability of the conventional softening agent (D1821) are solved; and the softening agent has more excellent softening performance and antistatic performance compared with common ester-based quaternary ammonium salts.

The invention relates to a kit for detecting an apolipoprotein A5 (ApoA5) for diagnosis of hypertriglyceridemia. The kit contains two unlabeled anti-ApoA5 monoclonal antibodies, an enzyme-labeled anti-ApoA5 monoclonal antibody, a blocking solution, an enzyme substrate solution, a coating buffer solution, a stop solution, a washing solution, and an ELISA plate; the two unlabeled anti-ApoA5 monoclonal antibodies coat the ELISA plate and are used as capture antibodies; the enzyme-labeled anti-ApoA5 monoclonal antibody is used as a detection antibody; the coating buffer solution is a carbonate buffer solution with the concentration of 0.05 mol / L and the pH of 9.6, wherein 1 L of the solution contains 1.59 g of Na2CO3 and 2.93 g of NaHCO3; the blocking solution is a bovine serum albumin with the mass concentration of 1%; the enzyme substrate solution is a phosphate buffer solution having the concentration of 0.1 mol / L and the pH of 6.0 and containing 3,3',5',5-tetramethylbenzidine with the concentration of 60 [mu]g / mL and H2O2 with the mass concentration of 0.05%; the stop solution is an H2SO4 solution with the concentration of 1 mol / L. The two monoclonal antibodies coat the ELISA plate to capture ApoA5 in human blood, the antibody capture ability is improved, the determination sensitivity and accuracy and linear range are improved, and test and clinical requirements are reached.

The invention provides a nail lengthening adhesive; the nail lengthening adhesive is characterized by comprising the following components by the mass percentage: 40-75% of an acrylate oligomer, 5-15%of an active diluent, 2-5% of a photoinitiator, 15-40% of acrylic micro-powder, and 0.01-2% of a defoamer. The nail lengthening adhesive has the advantages of high strength and toughness. The acrylicpowder contained in the colloid, as a reinforcement body, has a reinforcing effect on a cured adhesive, improves the hardness and tensile strength, and makes the lengthening adhesive not easy to breakand wear in daily life.

The invention relates to a selective hydrogenation catalyst, which adopts alumina-silica as a carrier, is supported by an active component of nickel (Ni); the weight ratio of alumina / silica is 1 / 5-1 / 2; the content of the active component of nickel (Ni) on a nickel atom basis is 20-50 wt% of the weight of the catalyst, preferably 30-45%. The invention also relates to a preparation method of the selective hydrogenation catalyst. The catalyst of the invention is used for hydrogenation of methyl-alpha-methyl styrene and alpha-methyl styrene, and has the characteristics of high activity and selectivity, and good stability.

The invention provides nutrient soil for garden seedling planting. The nutrient soil is characterized by being prepared from a matrix material and a microbial material; the matrix material is preparedfrom, by weight, 25-55 parts of dried sludge, 10-15 parts of steel slag sand, 10-15 parts of dried branch and leaf powder, 2-8 parts of coal ash and 5-20 parts of fermented and dried livestock and poultry excrement; the microbial material is prepared from, by weight, 1-5% of fermentation microflora, 40-75% of biological fermentation liquor, 20-55% of fermentation mushroom dregs and 0.01-2% of a microelement mixture. When the planting nutrient soil is used for planting plants, the survival rate of the plants can be increased, the standards of ordinary nutrient soil are reached, nutritional elements necessary for the growth of the plants can be provided, harm of pathogenic bacteria and pests to the plants is reduced, a preparation method of the nutrient soil is simple, the material cost islow, and the nutrient soil is suitable for industrialized volume production.

The invention discloses a method for preparing a packaged fermentative pickling wild pepper, which is mainly technically characterized by comprising the following steps of: packaging a sorted and cleaned wild pepper into a food-grade packaging plastic bag by utilizing the food-grade packaging plastic bag as a fermenting container and a packaging material, and adding premixed nutritional fermenting liquid; then vaccinating streptococcus lactis for expanding the fermenting liquid; sealing in vacuum and then carrying out temperature control fermentation; and when the fermenting liquid reaches a certain acidity, terminating fermentation by adopting pasteurization. The invention solves the problems of large investment cost, long period, complicated operation, time waste and trouble caused by the condition that a great number of argil pickling fermentative jars needed by the current manufacturer during production and the wild peppers are respectively packaged into a glass bottle or a plastic bag after fermentative ripping and the problem of rot of the wild pepper in the process of fermentative pickling for a long time. The pickling wild pepper product produced with the method has propersalinity and acidity and strong fermentative pickling flavor, not only can be used as a dinning pickle product, but also can be used as the seasoning of cooking and dishes and the sour and hot seasoning of a spicy nonstaple food.

The invention relates to a mass spectrometry instrument, in particular to an ion mass screening device in flight time mass spectrometry, and the device comprises a mass analyzer; the mass analyzer comprises a vacuum cavity, a field-free flying area located in the vacuum cavity, a grid electrode, a micro-channel plate and a Faraday disk; an ion mass screening electrode is arranged in an area between the two metal grid meshes of the grid mesh electrode; pulse voltages U1 and U2 which are opposite in polarity, identical in pulse width and synchronous in time sequence are applied to all the adjacent plate-type structure electrodes of the ion mass screening electrode respectively. According to the invention, the ion mass reaching the micro-channel plate ion detector can be selectively filtered;the interference of high-strength ion background ions and reaction reagent ions on the micro-channel plate detector is eliminated, the dynamic range of an instrument can be effectively enlarged, thedetection sensitivity is improved, and the service life of the micro-channel plate ion detector can be greatly prolonged.

The invention provides an artificial aging treatment method of high carbon steel wires. The method comprises the following steps that (1) the high carbon steel wires are stacked in a constant temperature furnace to be subjected to heat preservation, the heat preservation temperature is controlled to be 100 DEG C to 150 DEG C, and the holding time is controlled to be 50 min-200 min; (2) furnace cooling is carried out, the surface temperature of the high carbon steel wires during furnace discharging is 30 DEG C-40 DEG C, and the cooling time is controlled to be more than 30 min; and (3) naturalcooling is carried out to the room temperature, the room temperature is controlled to be 23+ / -5 DEG C. Compared with a traditional natural aging method, the plasticity value of hot rolling wire rods can be obtained by speeding up by 2 days to 11 days without deteriorating the plasticity.

The invention is about decorative brick used in indoor-outdoor wall face and ground ornament which is acted as the overall structure and produced through dressing after the dimidiate concrete body. Compared with the existing concrete complex structure decorative brick, it's shrinkage breakup is difficult, service life is long, technology is simple, production cycle is short and cost is low. The decorative surface is shaped through dressing to the dimidiate cement body. Therefore the colorful stone cross-section in the concrete body open naturally. The external appearance is like the crude 'zimu stone'. It is simple and natural. The decorative impression is novel. It is the perfect decorative stuff of wall face and ground.

The invention relates to a method for preparing a refractory material adhesive from oxidized wastewater sludge in aluminum alloy section plants, which comprises the following steps: taking sludge, washing with water, carrying out vacuum filtration, adding 10-30% of sludge into a reaction vessel on dry basis of sludge, adding 10-30% of sludge into the reaction vessel, adding 20-40% of water, and regulating the sludge into paste; slowly adding 40-60% of phosphoric acid, heating until the mixture temperature reaches 80-120 DEG C, promoting chemical reaction while continuously stirring, and finishing the reaction when the solution becomes clear and transparent; and cooling to room temperature, and standing for 24 hours to obtain the refractory material adhesive. The main component is aluminum dihydrogen phosphate, the pH value is 1.46, and the density is 1.45-1.47 g / cm<3>. The method is simple and easy to implement and low in cost, can recycle the oxidized wastewater sludge in aluminum alloy section plants, achieves the goal of waste comprehensive utilization, and reduces the environmental pollution caused by direct discharge of waste.

The invention relates to a hydraulic automatic locking device of a horizontal numerically controlled lathe tailstock. The hydraulic automatic locking device comprises a tailstock body, wherein a double-piston rod cylinder is arranged inside a lower space of the tailstock body; a left piston rod and a right piston rod arranged inside the double-piston rod cylinder can respectively push a wedge block at the corresponding side to drive a draw bar arranged on the wedge block to move upwards under the hydraulic effect of the cylinder; a pressure plate is arranged at the lower end of the draw bar; a compression spring is arranged at the top end; the pressure plate is driven to press a guide surface of a machine tool upwards when the draw bar moves upwards, so as to achieve locking of the tailstock, and the piston rods at two sides are recovered when the tailstock needs to be loosened, the compression spring can push the piston rod to move downwards; the pressure plate of pressing the guide surface of the machine tool is loosened; and an oil chamber inside the double-piston rod cylinder is connected with a hydraulic control system of the machine tool through a hydraulic oil pipe. The hydraulic automatic locking device is suitable for a horizontal lathe or a flat bed lathe, of which the tailstock needs to be locked; the production efficiency is improved; the labor intensity is reduced; stable and reliable locking is achieved, and the machining accuracy of a part is also guaranteed.

The invention discloses a processing technology for electroplating effluent of heavy metal. The processing technology comprises an iron-carbon micro electrolysis processing procedure and a sludge circulating and processing procedure, wherein the sludge circulating and processing procedure comprises an agitating tank, a sedimentation basin and an alkali tank which are successively and mutually connected to form sludge circulation; mixed effluent enters a micro electrolysis packed tower to be in contact with spherical iron-carbon composite materials for carrying out micro electrolytic reaction, and an iron-carbon micro electrolysis preprocessing procedure is completed; then, the sludge circulating and processing procedure is performed. The technology disclosed by the invention is simple, the electroplated effluent is not needed to be processed in a stream splitting manner, and all the electroplating effluent needs to be mixed into a stream to be processed. In the technology, except that the pH value is adjusted through acid and alkali, other medicaments are not needed to be added, so that the quantity of the produced sludge is substantially reduced by 50% or above as compared with that of a conventional precipitation method.

The present invention relates to a vacuum cleaner with vibration cleaning device. Said vacuum cleaner includes bag filter, said filter is formed from filter bag and skeleton for opening said filter bag. It is characterized by that the bag mouth fastener cover of said filter bag is parallelly-connected with inlet of fan, and said skeleton is placed in the filter bag, and is supported or drawn by an elastic element so as to can make the filter bag be retained in open state, and a vibrator is fixed on the skeleton.