13results about How to "Control rate" patented technology

The application provides a high-porosity Raney nickel electrode and a preparation method thereof, and relates to the technical field of Raney nickel electrodes and preparation thereof. The preparation method of the high-porosity Raney nickel electrode effectively controls the dealuminization rate and the pore uniformity through a preparation process of'sintering treatment + special electrochemical dealloying treatment', and stably prepares the high-porosity Raney nickel electrode. A new process for preparing the high-porosity Raney nickel electrode in an environmentally friendly manner is provided, which replaces the traditional corrosion pore-forming process of a strong alkaline chemical solution and reduces pollution. The prepared high-porosity Raney nickel electrode has a high porosity of up to 52%, and the pore structure is stable, so that the catalytic activity and mechanical stability of the electrode are effectively improved.

The invention relates to the field of fluorine chemical processes, in particular to a molybdenum hexafluoride sampling device and method. The device comprises a molybdenum hexafluoride steel cylinder, an inert gas steel cylinder, a buffer bottle, a first-stage absorption bottle, a second-stage absorption bottle and a third-stage absorption bottle, the absorption liquid is filled into the three-stage absorption bottle and is weighed, the pipeline is vacuumized and replaced after the three-stage absorption bottle is connected, the absorption bottle is purged, and the buffer bottle is vacuumized. The method comprises the following steps: heating a molybdenum hexafluoride steel cylinder, filling the molybdenum hexafluoride steel cylinder into a buffer bottle, filling inert gas, introducing the inert gas into an absorption bottle for absorption, purging a pipeline, weighing the absorption bottle, and detecting metal impurities by using ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometer). According to the method, the problem that metal impurities in high-purity molybdenum hexafluoride are difficult to safely and accurately sample is solved, and a reliable and practical solution is provided for purity quality control of the key material molybdenum hexafluoride in the fields of semiconductors, nuclear industry and the like.

This invention discloses a high-crack-resistant cement-fly ash stabilized base course material, belonging to the field of road engineering technology. The material comprises the following components by mass percentage: 2.0-3.0% cement, 16-20% fly ash, and the balance being stabilized aggregate. The cement is an external admixture, the fly ash is an internal admixture, and the gradation of the stabilized aggregate conforms to the specifications of CF-A-2L or CF-A-2S in JTG / T F20-2015. This invention, by adopting a "low cement, high fly ash" mix design, controls the 7-day unconfined compressive strength within a reasonable range of 3.5-4.5 MPa, effectively avoiding the problem of regular transverse cracks in the base course caused by excessively high early strength. Simultaneously, the high fly ash content ensures the continuous growth of the material's later strength, with its 21-day unconfined compressive strength remaining stable above 6 MPa. Its overall performance is superior to the mix ratios recommended by current standards. This invention is particularly suitable for highway base course construction in arid regions with large temperature differences, such as Xinjiang.

An aerosol-generating device is disclosed. The aerosol-generating device includes: a storage chamber for storing an aerosol-generating substance; the core material is communicated with the storage chamber; a heat-generating body in contact with the core material and including nanoparticles that generate heat by surface plasmon resonance; and a light source configured to emit light toward the heat-generating body. The heat-generating body includes: a first portion that receives light emitted from the light source; and a second portion disposed outside the first portion and having a plurality of holes formed therein.

This utility model discloses a water treatment device and a cleaning machine. The water treatment device includes a housing and a magnetization module and an ozone generating component encapsulated within the housing cavity. The housing also has an inlet pipe and an outlet pipe. The magnetization module is located on one side of the housing cavity, and the ozone generating component is located on the other side. The ozone generating component includes an encapsulation box and an ozone generating module, a gas-liquid mixer, an overflow component, and a one-way valve housed within the encapsulation box. The inlet pipe, magnetization module, gas-liquid mixer, and outlet pipe are connected sequentially. The ozone generating module is connected to the gas-liquid mixer via a pipe. The overflow component is located on the pipe between the ozone generating module and the gas-liquid mixer. The one-way valve is located at the outlet of the ozone generating module. This utility model significantly reduces the internal piping distribution of the housing, thus reducing the space required for the housing and adapting to the installation size requirements of household dishwashers.

Disclosed is a novel organic light emitting compound represented by Formula 1 having high current efficiency and low driving voltage (see disclosure), and an organic electroluminescent device comprising the same.

The application discloses a preparation method of an alumina aerogel heat insulation felt, and comprises the following steps: adding an aluminum source precursor into a ketone substance to form a precursor solution through sufficient dissolution; adding an alcohol solvent containing a silicon source precursor, an amine substance and a catalyst into the precursor solution to form an alumina sol through uniform stirring; adding a surfactant into the alumina sol to form an alumina sol containing a light shielding agent through uniform stirring; adding light shielding agent particles into the alumina sol to form the alumina sol containing the light shielding agent; immersing a ceramic fiber felt into the alumina sol containing the light shielding agent to perform gel aging, so as to obtain a fiber felt / gel composite; and performing drying and heat treatment on the fiber felt / gel composite, so as to obtain the alumina aerogel heat insulation felt. The alumina aerogel heat insulation felt prepared by the method has the advantages of high temperature resistance, excellent heat insulation performance and good flexibility.

The present application relates to pile foundation engineering technical field, especially to a kind of rectangular pile intelligent hole-forming equipment, comprising: main rack, the main rack includes: the cross section control support of rectangular frame structure and swing shaft across the both sides of cross section control support;The horizontal cross-sectional dimension of the cross section control support is matched with target pile hole size;Cutting drilling assembly, the cutting drilling assembly includes: power support and multiple groups of horizontal arrangement cutting drill bit group;The through hole is equipped on the power support, and the power support is set on the swing shaft by the through hole;Swing drive mechanism, the swing drive mechanism includes: swing cylinder and limit switch symmetrically arranged on the swing shaft, and the swing cylinder is used to drive the power support;The limit switch is used to control swing amplitude;Intelligent control system, the intelligent control system includes: torque sensing piece for sensing the torque of cutting drill bit group and controller.

The utility model discloses a fluorination furnace convenient to loading relates to fluorination reaction technical field, including furnace body and feed inlet, the feed inlet is located one end at the top of furnace body, is equipped with the conveying cylinder on the furnace body, the conveying cylinder top is equipped with first motor, first motor output is equipped with spiral conveying rod, spiral conveying rod rotatory connection is in the conveying cylinder inside, the conveying cylinder lower part one end is equipped with the feed frame, the conveying cylinder upper part one end is equipped with the discharge frame, and the discharge frame is located above the feed inlet. The utility model adds solid reactant in the conveying cylinder inside, then rotates spiral conveying rod, reaches the effect convenient for adding solid reactant to the inside of furnace body, can more accurately control the adding time and rate of reactant, to maximum limit improves the reaction efficiency and selectivity, not only can simplify the operation process, reduces the operation difficulty, can improve work efficiency.

The utility model discloses a bone grain sorting and crushing device which comprises a rack, a material receiving hopper is arranged at the top of the rack, a crushing cabin is fixedly connected to the surface of the top of the material receiving hopper, and a crushing roller is rotationally arranged in an inner cavity of the crushing cabin; the rear side of the rack is fixedly connected with a driving motor, an output shaft of the driving motor is connected with a belt wheel, the left end of the smashing roller penetrates through the smashing cabin and is connected with an upper-layer driven wheel, and the belt wheel and the upper-layer driven wheel are in transmission through a belt. According to the utility model, the transmission shaft which is synchronous with the crushing roller and the auger roller is arranged at the position of the feed port of the crushing and sorting machine, and the plurality of baffles which rotate along with the transmission shaft are connected on the transmission shaft in an annular array manner, so that the space of the feed port is divided into a plurality of cavities with the same volume by the baffles; the higher the rotating speed of the crushing roller and the auger roller is, the higher the feeding speed is, so that the feeding speed is controlled; and meanwhile, the dust suppression mechanism is arranged on the crushing cabin, and dust in the crushing cabin is collected to suppress the dust from flying into the outside.

The application belongs to the technical field of valve sealing, in particular to a valve sealing structure and method for conveying high-temperature and high-pressure medium, which comprises a valve body, a valve cover, a sealing ring, a four-ring, a supporting ring, a heat insulation ring and a slow-release pre-tightening part; the slow-release pre-tightening part is arranged between the supporting ring and the valve cover, and the supporting ring is fixed on the valve body; when the pressure in the valve body changes, the maximum rate of discharge and suction of the fluid in the adaptive groove is controlled by using the flow limiting valve, so that the maximum rate of the valve cover moving away from or close to the four-ring is controlled, and thus the pressurization or depressurization rate of the sealing ring is controlled, thereby reducing the damage of pressure change to the sealing ring, especially in the environment of severe and repeated pressure fluctuations, the pressure change of the sealing ring can be kept within a relatively safe range, and the heat insulation ring can block the temperature of the medium, delay the temperature change rate of the sealing ring, and prolong the service life of the sealing ring in the long-term use.

The application discloses a power supply system suitable for superconducting magnets and a control method thereof, detects output current of a superconducting magnet, and performs difference between the output current and a pre-set current steady-state working value, and takes the difference as input of PID control; decoupling control is performed by using the pre-set current steady-state working value, current charging and discharging rate and current charging and discharging rate of another superconducting magnet, output S1 * is obtained; output S1 * is added to output of the PID control, and PWM modulation is performed on the addition result, and a drive signal of a front-stage one-way full-bridge result switch tube of an isolation type DC-DC converter is obtained. The application effectively solves the problem that two superconducting magnets are affected by self-induction and mutual induction in the charging, stable operation and discharging process, and can control the charging and discharging rates of the two superconducting magnets.

The application belongs to the field of food science and functional biological materials, and discloses a whey protein gel based on procyanidin-calcium ion metal-phenolic network (MPNs) and a preparation method and application thereof. Specifically, MPNs are prepared by one-step self-assembly of procyanidin (PC) and calcium ions, and then the MPNs are added to a whey protein isolate (WPI) solution to form GWPI@MPNs gel by heating. The method is safe in raw materials, simple and green in process, and can be industrialized, and can customize the digestion rate and texture according to the food demand, solves the application bottleneck of "fast digestion and low gel strength" of whey protein, and provides a new way for the application of functional protein gel in nutrition supplement, meal replacement and food for the elderly.