103results about How to "The amount added is accurate" patented technology

The invention discloses a low-carbon ultra-low sulfur steel smelting method. The method comprises the following technological processes: pouring molten iron into a tank, pretreatment of molten iron, oxygen remaining operation of a converter, RH furnace vacuum decarburization, alloying and vacuum degassing in an RH furnace, deoxidization of aluminium yarn/aluminium wire in an LF refining furnace, slagging by using lime and CCM. Through combination of molten iron desulphurization and drossing, optimization of a converter steel tapping and oxygen remaining system and a slagging system, the vacuum decarburization, alloying and degassing control in the RH furnace, and the aluminium wire diffusing deoxidation slagging and aluminium wire sediment deoxidation in the LF furnace, deep decarburization and desulphurization are carried out. With an emphasis on combination of convertor steel tapping and oxygen remaining operations, RH deep decarburization and LF furnace deep desulphurization, technical optimization is carried out; due to reasonable ladle argon bottom blowing control in the smelting process, carbon content control and metallurgical thermodynamics and dynamics conditions of desulphurization are given a full play; the RH furnace decarburization is stable; LF furnace slagging and desulphurization and recarburization control effects are obvious; and low-carbon ultra-low sulfur steel smelting is achieved.

The invention discloses a method for preparing poly p-phenylene terephtha-lamide resin with high viscosity. Firstly, para-phenylene diamine is fully dissolved and added into a prereactor, then paraphthaloyl chloride is added into the prereactor for prepolycondensation, then a prepolymer is added into a double screw extruder, a pyridine acid absorbent and a remained paraphthaloyl chloride low-temperature solution are respectively and synchronously added for a final polycondensation reaction through a liquid metering pump, and the extrusion is performed; and a polymer is kept stand, washed, dehydrated and dried. The inherent viscosity of the poly p-phenylene terephtha-lamide resin prepared by the method is between 6.5 and 9.5dl/g, the resin has good spinnability, and the spun fiber has good color and luster, high strength, and stable performance.

The invention provides a quantitative liquid adding device for a full-automatic medical cleaner, which comprises a liquid medicine input part, a liquid medicine mixing chamber, an exhaust part, a pure water input part, a liquid medicine output part and a control system, wherein the liquid medicine input part is connected with an external liquid medicine storing container; the liquid medicine output part is used for discharging liquid medicine; and the control system is electrically connected with all parts. The quantitative liquid adding device is characterized by also comprising a peristaltic pump which is arranged between the liquid medicine input part and the liquid medicine mixing chamber, the peristaltic pump is electrically connected with the control system to quantitatively convey the liquid medicine in the external liquid medicine storing container to the liquid medicine mixing chamber. The invention also provides a control method of the quantitative liquid adding device. As the peristaltic pump driven by electric power is used for adding liquid, firstly, without additionally adding external high-pressure gas to drive the liquid medicine to enter the mixing chamber from the storing container, the quantitative liquid adding device effectively prevents the problems of liquid medicine scattering and the like caused by air pressure variation; and secondly, as the peristaltic pump can accurately control the added quantity of the liquid medicine per se, the whole quantitative liquid adding device has simpler structure and accurate added quantity of the liquid medicine and is easier to control.

The invention provides a preparation method of an epoxy resin/MXene composite material. The preparation method comprises the following steps: preparing a single-layer MXene, determining the addition amount of the single-layer MXene, compounding the single-layer MXene and an epoxy resin material, and the like. The preparation method is simple in process, short in time, high in efficiency and low incost, and the prepared epoxy resin/MXene composite material is remarkably improved in tensile breaking strength and good in mechanical property.

The invention discloses an intelligent demercuration addition agent adding system for a coal-fired power plant. The intelligent demercuration addition agent adding system comprises a smoke mercury continuous on-line monitoring plant, a crushing device, a screw feeder, a circulating flue, a fan and an intelligent control device, wherein a smoke outlet of the circulating flue is formed in the outlet of an economizer in a tail flue, and a smoke inlet of the circulating flue is formed in the inlet of an air preheater in the tail flue; the fan is arranged in the circulating flue, a feeding port of the screw feeder is communicated with a discharge port of the crushing device, the discharge port of the screw feeder leads to the circulating flue, and a monitoring probe of the smoke mercury continuous on-line monitoring plant is arranged in the tail flue; and the smoke mercury continuous on-line monitoring device and the screw feeder are respectively and electrically connected with corresponding ports of the intelligent control device. The intelligent demercuration addition agent adding system provided by the invention has the characteristics that additive amount of a demercuration addition agent is exact, the utilization efficiency is high and a demercuration effect is good.

The invention discloses a desulfurization wastewater treatment process characterized by comprising the following process steps: step 1, pretreatment, namely adding organic sulfur, carbonate and a flocculant into desulfurization wastewater to carry out a reaction, and removing calcium ions and heavy metal ions in the desulfurization wastewater to obtain a pretreatment solution; step 2, evaporationand concentration, namely evaporating and concentrating the pretreatment solution until the content of sodium chloride in a feed liquid is 200-280mg/l; step 3, cooling crystallization, namely carryingout cooling crystallization on the evaporated and concentrated feed liquid to obtain slurry, wherein the crystallization temperature is 20 DEG C or below, and the crystallization time is 0.25-1h; andstep 4, centrifugation and drying, namely carrying out centrifugation and drying treatment on the slurry subjected to cooling crystallization to obtain MgSO4-7H2O. During pretreatment, excessive calcium ions cannot be introduced, and the troublesome step that calcined soda is added to remove the calcium ions is not needed, so that the use amount of a reagent is reduced; in addition, the finally obtained product is MgSO4-7H2O, so that the economic benefit of the wastewater treatment process is increased.

The invention relates to the technical field of special steel forgings, in particular to high-temperature-resistant and high-toughness hot work die steel and a preparation method thereof. The hot workdie steel comprises the following components of, in percentage by weight, 0.38 %-0.40% of C, 0.25 %-0.40 % of Si, 0.45 %-0.55 % of Mn, 4.75 %-5.3 % of Cr, 1.7 %-1.9 % of Mo, 0.60 %-0.80 % of V, 0.30%-0.50 % of Ni, less than or equal to 0.002 % of S, less than or equal to 0.0015 % of P, and the balance Fe. The preparation method comprises the following steps of electric arc furnace smelting, external refining, casting, atmosphere protection electroslag remelting, forging, quenching oil cooling treatment and spheroidizing annealing treatment. According to the steel and the method, the raw material proportion of the hot work die steel is optimized, and the content of Si, V, Mo, Ni and other elements is limited within an accurate adjustment and control range, so that the adding amount of corresponding Si, V, Mo, Ni and other elements can be accurate, and the problem that all properties of the die steel are incompatible is solved; and the high-performance hot work die steel can be directly manufactured by selecting the numerical value of the content within the range, so that the finished product rate is remarkably increased.

The embodiment of the invention discloses an automatic waste adding device which comprises a crushing bin. A cutting and crushing mechanism is arranged in the crushing bin. A discharging conveying reamer is arranged ahead of the cutting and crushing mechanism. A discharging opening is formed in the lower end of the crushing bin. The discharging conveying reamer is located in the discharging opening. A belt scale is arranged right below the crushing bin. According to the equipment, the belt scale is arranged under the crushing bin, the device has prefeeding and quantitative material feeding functions, and precision of the addition amount of waste can be ensured. Meanwhile, a weighing sensor is arranged on a gypsum conveying assembly and can calculate the thrown gypsum amount, a user can setthe addition amount according to the requirement of the technology formula, when it is detected that the gypsum conveying assembly is not started, the waste is not added through an outside controller, in the operation process, the conveying precision of the waste can be well mastered, whether addition can be carried out or not is detected automatically, compared with traditional equipment, in theusing process, the mixing proportion can be well mastered, and the automatic waste adding device is high in practicality.

The invention relates to an environment-friendly anti-dryer and a preparation method thereof. The environment-friendly anti-dryer is prepared by raw materials of, by mass, 15%-20% of antioxidant 2246, 10%-15% of food grade phenol antioxidants, 40%-50% of dioctyl phthalate and 20%-30% of high boiling point solvent oil, and the preparation method includes heating the dioctyl phthalate to 35 DEG C to 60 DEG C, slowly adding tertiary butyl hydroquinone in a thermal insulation state for a fully stirring until a mixture is completely dissolved, adding dioctyl adipate, slowly adding an antioxidant 2246 for the fully stirring until a mixture is completely dissolved at the temperature between 80 DEG C and 90 DEG C, and continuously stirring for 40-60 minutes in the thermal insulation state so as to guarantee that the antioxidant is uniformly distributed in a solvent to obtain a finished product. According to the environment-friendly anti-dryer and the preparation method thereof, the problems that the yellow ink turns green and blue ink is rusted and the like are effectively solved, the anti-dryer is almost insoluble in water, thereby the anti-dryer has no negative effect on water-ink balance and is safe and environment-friendly, the smell is small, the intermiscibility of the anti-dryer and ink is good, the antioxidant efficiency is high, and ink can opening time and retention time of the ink on a printer can be effectively prolonged.

The invention discloses a washing material adding method for washing feather and a washing material adding washing machine thereof and belongs to the technical field of feather cleaning. The method comprises the steps of (S1) placing feather to be cleaned on an electronic scale to be weighed and recording a weight after weighing, (S2) setting the amount of water corresponding to the weight value of the weighed feather in step (S1), and (S3) starting washing according to a washing time of set washing device corresponding to the weight of the weighed feather in step (S1). The washing material adding washing machine comprises a cleaning outer barrel, the middle portion of the left side wall of the washing outer barrel is fixedly connected to a motor frame by screws, a timing motor is laterally installed on the motor frame, and the right end of an output shaft of the timing motor is connected to a rotating shaft through a coupling. According to the scheme, through a scientific measurementmode, the amount of an added washing material is more accurate, the cleaning is good, the water and the washing material can be saved, the working efficiency is improved, and the quality of a productis improved.

The invention relates to a high-pressure charging valve body. The high-pressure charging valve body comprises a cylinder, a piston, a connecting sleeve, a first needle valve and a second needle valve,wherein one end of the piston is arranged in the cylinder, one end of the connecting sleeve sleeves one end, on which the piston is arranged, of the cylinder, the other end of the connecting sleeve is in threaded connection with the piston, the piston rotatably moves in the cylinder, the piston is in dynamic seal matching with the cylinder, the first needle valve is arranged on the end, which isfar from one end of the piston, of the cylinder, the second needle valve is arranged on the side wall of one end, which is sleeved by the connecting sleeve, of the cylinder, and the first needle valve, the cylinder and the second needle valve communicate with one another. According to the high-pressure charging valve body, the piston is in threaded fit with a connecting piece, so that the piston rotatably moves, the reaction of high-pressure air in the cylinder can be prevented, all air in the cylinder is extruded, the accurate is high, the high pressure is resistant, the operation is flexible, and milligram trace gas can be continuously added for many time by designing the appropriate size, so that accurate measurement of the gas flow is realized. In addition, the invention further provides a high-pressure charging system which adopts the high-pressure charging valve body.

The invention relates to a preparation method of tailing sand and artificial sand composite concrete. The method comprises the following steps of step 1, detecting the water absorption rates of tailing sand and artificial sand, and adjusting the addition amount of water and a glue material during concrete preparation according to the water absorption rates of the tailing sand and the artificial sand; step 2, trial-producing concrete according to the addition amount calculated in the step 1, calculating the slump of the concrete, and further adjusting the addition amount of the water and the glue material during preparation according to the slump of the trial-produced concrete; and step 3, determining the required amount of the concrete, determining the concrete stirring duration according to the required amount, and further adjusting the addition amount of the water during concrete preparation according to the stirring duration. According to the method, river sand is replaced by the tailing sand and the artificial sand, due to the fact that the grain size distribution of the tailing sand is concentrated, and the smaller tailing sand is large in cohesiveness and poor in fluidity, the smaller tailing sand is matched with the artificial sand with the large grain size, the slump of the concrete is increased, and the prepared concrete keeps excellent fluidity.

The invention relates to a cream production line raw material storing and spice adding system which comprises a raw material storing system and a spice adding system. The raw material storing system comprises multiple storage zones, and each storage zone is provided with 10-20 raw material storing tanks. Each storage zone is provided with a first code scanning device, and each storing tank is provided with a second code scanning device. Before powdery material storing bags are fed into the storage zones, bar codes are identified through the first code scanning devices, and the bags can enter after verification is passed. Before the powdery material storing bags are charged into the raw material storing tanks, bar codes are identified through the second code scanning devices, and charging can be performed after secondary verification is passed. The spice adding system is composed of multiple spice adding units. The spice adding units are respectively, mutually and sequentially connected with an essence tank, eccentric stepping pumps, a premixing tank and a valve, wherein the tail end of a delivery pipe is located at the upper portion of a premixing cylinder, and liquid spice, dissolved powdery spice or diluted colloidal spice is quantitatively added to the premixing cylinder through respective eccentric stepping pumps.

The invention provides a link plate type high-temperature automatic constant weight feeder, comprising a conveying control metering device arranged below a feeding hopper, a cleaning device arranged below the conveying control metering device, and a program control system. The link plate type high-temperature automatic constant weight feeder is mainly and technically characterized in that the conveying control metering device is a single-faced board turning link plate driven by a chain wheel; a link plate conveying belt is coated on the single-faced board turning link plate; a sensor device is further arranged below the conveying control metering device; the sensor device is provided with a plurality of flexible guide rails below the link plate conveying belt; a plurality of supporting guide rails are connected with the flexible guide rails at both sides; and sensors are respectively connected with the supporting guide rails. With the adoption of the link plate type high-temperature automatic constant weight feeder provided by the invention, the metering precision is influenced by the high temperature of a material in conveying and metering processes, and the influence on the precision, caused by factors of high temperature, belt stretching and the like when a high-temperature material is metered, are avoided, so that the metering precision is improved from 3% to 1%, and the cement quality can be effectively ensured.

The invention discloses a die-casting machine punch lubricating machine which comprises a hopper, a material taking mechanism and a feeding mechanism. The feeding mechanism comprises a feeding air cylinder, wherein the feeding air cylinder comprises a feeding air cylinder piston rod, a feeding air cylinder body and a feeding air cylinder piston. The hopper is connected to a material taking pipe, the tail end of the material taking pipe is connected with the material taking mechanism and is connected with the feeding air cylinder, the material taking pipe rightly faces a material tank led to the inside of the feeding air cylinder piston rod, a material taking device is arranged at the front section of the feeding air cylinder piston, a rotary fixed column is arranged inside the feeding air cylinder body, and the material taking device is matched with the rotary fixed column to drive the feeding air cylinder piston rod to perform whole material taking when the feeding air cylinder operates. The die-casting machine punch lubricating machine directly pours lubricating particles into lubricating position by using the material tank, can ensure that the adding amount of the lubricating particles is accurate and enables a punch to be fully lubricated, the service life of the punch is greatly prolonged, and the production cost is saved. In addition, the quality of a die-casting product is fully ensured, the problem that traditional feeding and blowing enable particles to be splashed all around is avoided, and the die-casting machine punch lubricating machine adopts an integral structure and is simple in structure, capable of saving space, convenient to install, low in fault rate and easy to maintain.

The invention discloses a pouring device for preparing foaming concrete and belongs to the technical field of building block equipment. The pouring device comprises a plurality of additive tanks, a water tank, a mixing and pouring tank and a worktable. The tops of the additive tanks are provided with additive feed inlets, and the bottoms of the additive tanks are provided with additive discharge outlets which communicate with the mixing and pouring tank. The top of the water tank is provided with a water inlet, and the bottom of the water tank is provided with a water outlet which communicates with the mixing and pouring tank. The top of the mixing and pouring tank is provided with a dry material feed inlet, and the bottom of the mixing and pouring tank is provided with a pouring outlet. The mixing and pouring tank is internally provided with a stirring paddle which is connected with a power device to supply power. According to the pouring device, materials can be sequentially added according to the process order, meanwhile, a weighing device is arranged and can accurately control the addition amount of the materials, the whole pouring process is controlled through a computer, and manpower, material resources and time are saved.