16results about How to "Avoid impurities" patented technology

The utility model relates to a crown band tension adjusting device belongs to tire production equipment field. The bracket plate is fixed with crown band guide transmission wheel a, crown band guide transmission wheel b and crown band tension adjusting rod, the bracket plate behind crown band guide transmission wheel a is installed with tension measuring roller, the vertical fixed brush roller a and crown band tension roller a are installed on the bracket plate top, the parallel installation of crown band tension roller f and brush roller c is installed on the bracket plate behind tension measuring roller, the parallel installation of the crown band tension roller j and brush roller e that are tangent is installed on the side part top of frame, the h frame links through curved arm storage rack and frame, the h frame is installed with curved arm inner transmission roller a, curved arm inner transmission roller b and curved arm inner transmission roller c respectively in hinged point, the parallel installation of brush roller d, crown band tension roller g and crown band tension roller h is installed on the h frame top, the crown band tension roller k is installed through crown band tension roller shaft on the h frame lower side, the crown band tension roller i is installed on the h frame middle part above crown band tension roller k.

The application discloses a high-temperature-resistant capacitor film resin and a preparation method and application thereof, and belongs to the technical field of capacitor film resins. The high-temperature-resistant capacitor film resin comprising polypropylene homopolymer chains and propylene / 4-methyl-1-pentene copolymer chains is prepared through a segmented in-situ polymerization process, wherein the high content of poly(4-methyl-1-pentene) segments in the propylene / 4-methyl-1-pentene copolymer chains can improve the temperature resistance of the resin, and the polypropylene segments can improve the compatibility of the resin, thereby solving the problems of non-uniformity, phase separation and poor high-temperature resistance existing in the rule blending, and realizing that the capacitor film prepared from the resin has low dielectric loss and high breakdown field strength under the condition of 125 DEG C.

This invention relates to the field of nanoprinting plate technology, and more particularly to a coating material for nanoprinting plates and its preparation method. The preparation method includes: feeding nanoparticles, film-forming resin, curing agent, dispersant, solvent, and dye into a high-speed disperser for pre-dispersion to form a first dispersion; obtaining the vibration value of the sleeve at the temperature sensor probe during the pre-dispersion process and determining the maximum and minimum speeds of the high-speed disperser; obtaining the drive current deviation value of the motor of the high-speed disperser and determining the reverse rotation time of the motor; grinding the dispersion to be ground, and calculating the hardness of the residual hard agglomerates based on the drive current deviation value and determining the outlet back pressure of the feed pump of the sand mill; completing the grinding process according to the outlet back pressure to obtain a grinding slurry; adding a leveling agent to the grinding slurry to obtain the finished coating material for nanoprinting plates. This invention improves the film-forming performance of the finished coating material for nanoprinting plates.

The invention discloses a chlor-alkali industry brine excess alkali amount optimization method and system based on AI online analysis. The method comprises the following steps: acquiring multi-source data in a chlor-alkali production process, and preprocessing the multi-source data to form structured data; inputting the structured data into a pre-constructed AI decision model for variable correlation analysis, and outputting a real-time influence coefficient of each parameter on the excess alkali amount; selecting a plurality of parameters which have the maximum influence on the excessive alkali amount from the real-time influence coefficients, calculating the optimal control interval of the excessive alkali amount in combination with the process requirements and the optimal targets of energy consumption and raw material consumption, and generating an optimization scheme according to the priority; and adjusting the salt water excess alkali amount data in the chlor-alkali industry according to the optimization scheme. According to the method, the incidence relation between the excessive alkali amount and all the influence parameters is tracked in real time through the dynamic AI model, working condition changes are accurately captured and rapidly responded, the excessive alkali amount control precision is improved, and impurity residues caused by insufficient excessive alkali amount and technological hidden dangers caused by too high excessive alkali amount are effectively avoided.

The application discloses a boron nitride van der Waals epitaxial gallium nitride microwave material and a growth method. An ammonia-rich aluminum nitride nucleation layer is introduced on the surface of a boron nitride two-dimensional material, thereby providing high-density nucleation sites for the growth of a subsequent gallium nitride transition layer. The aluminum nitride nucleation layer is subjected to annealing treatment to block grain boundary dislocations. A gallium nitride transition layer with low temperature and high V / III ratio is introduced to promote a lateral epitaxial mode in the initial growth of the gallium nitride, thereby accelerating the turning and blocking of threading dislocations. The growth process of a gallium nitride buffer layer is high-temperature and low-V / III-ratio, thereby promoting the gallium nitride buffer layer to be in a layered epitaxial mode, improving the material surface morphology and crystal quality. A gallium nitride channel layer with high temperature and high V / III ratio is introduced to improve the electron transport characteristics. The technical scheme is based on a material growth method such as MOCVD, and the material is developed through one-time epitaxy technology. Through epitaxy technology improvement and process control, the material with high surface flatness, crystal quality and electron transport characteristics is developed.

The invention relates to a stirring casting preparation method suitable for a superfine SiCp reinforced aluminum-based composite material. The problems that in a traditional technology, wettability of SiCp and aluminum melt is poor, agglomeration is prone to occurring, an Al4C3 brittle phase is prone to occurring, and the melt is prone to being polluted by impurities and high in porosity are solved. The preparation method comprises the following steps: performing in-situ growth of graphene on the surface of SiCp through pulse laser-methane micro-explosion to form a composite reinforced phase; carrying out aluminum alloy fractional smelting and step-by-step stirring to obtain a composite melt; an external coil-iron core assembly is adopted to carry out pulse magnetic oscillation on the melt, and mechanical stirring and argon degassing are synchronously matched; and finally casting and molding. According to the method, generation of Al4C3 can be avoided, uniform dispersion of SiCp is achieved, the density of the obtained composite material is larger than or equal to 99.2%, the 0.2% yield strength is larger than or equal to 220 MPa, the heat conductivity retention rate is larger than or equal to 99%, the increment of the iron content of the melt is smaller than or equal to 50 ppm, ton-level mass production can be achieved based on conventional equipment, and the method is suitable for industrial preparation of the high-performance aluminum-based composite material in the fields of aerospace and automobiles.

This invention proposes a superconducting magnet cooling system, relating to the field of superconducting magnet design technology. The system includes: a superconducting coil cavity for mounting a superconducting coil; two ends of a cooling pipe connected to the superconducting coil cavity; a gas driving component for driving gas from the superconducting coil cavity into the cooling pipe and then back into the superconducting coil cavity; the gas in the cooling pipe is adapted to flow through a first cooling component to cool the gas in the cooling pipe; at least a portion of the cooling pipe passes through a second cooling component to cool the gas in the cooling pipe. The superconducting magnet cooling system of this invention can improve the cooling rate, quickly restore the low-temperature environment within the superconducting coil cavity after a superconducting magnet failure, avoid residual cooling medium within the superconducting coil cavity, improve cleanliness, ensure the operational stability and reliability of the superconducting coil, and has better performance and wider applicability.

The application provides an amorphous nanocrystalline soft magnetic alloy powder and a preparation method and a magnetic powder core thereof, and relates to the technical field of soft magnetic materials. The preparation method of the amorphous nanocrystalline soft magnetic alloy powder adopts high-energy electric pulse technology to realize instantaneous rapid heating and explosion of the amorphous alloy material, and realizes accurate control of the powder particle size by accurately controlling energy input parameters and interval parameters, thereby preparing high-sphericity soft magnetic powder with a median particle size of 0.5-5 mu m, significantly improving the uniformity and dispersity of the powder, and solving the problem of low particle size control accuracy in the prior art. Moreover, the preparation method has a simple process flow and low energy consumption, avoids impurities and defects introduced in the traditional multi-step process, and improves the purity and performance of the material. The prepared amorphous nanocrystalline soft magnetic alloy powder has the characteristics of small particle size, high sphericity, high saturation magnetization, low coercivity and high yield, and is particularly suitable for the field of high-frequency magnetic elements and precision electronic devices.

This invention discloses a sodium methoxide solution distillation suction device, comprising a distillation suction device body, with a vacuum pump connected to the left side of the body. This invention involves placing a rubber tube into a sodium methoxide solution container, which then floats continuously on the surface via a float ring, preventing the absorption of impurities from the sodium methoxide solution. The user then activates the vacuum pump, which extracts air from the inside of the device body, creating a negative pressure environment. The sodium methoxide solution is then drawn through a metal tube and absorbed into the device body via an absorption hopper. Impurities in the solution are then purified using filter and purification plates, and the solution can be discharged and collected. This method replaces existing absorption methods that easily absorb impurities during the absorption process, thus avoiding the absorption of impurities during the absorption process.

The utility model relates to urea melting pump technical field, and disclose a kind of urea melting pump, including main body structure, the main body structure includes fixed base, filter cartridge, engaging groove, sealing cover and engaging block, and engaging groove and engaging block are equipped with two groups, and the lower surface of sealing cover is attached to the upper surface of filter cartridge;Anti-vibration structure, the anti-vibration structure is equipped with four groups, and anti-vibration structure includes connecting seat, connecting plate and fixed plate.The utility model can filter the urea that flows through the inside of filter cartridge by filter core, and by the setting of two engaging grooves and engaging block, so that staff only needs to rotate sealing cover when the lower surface of sealing cover is attached to the upper surface of filter cartridge, the installation and disassembly of sealing cover can be completed, the design can avoid the impurity or solid particle in urea, enter pump body, to avoid the wear and tear, blockage or corrosion of pump body as far as possible.

The application discloses a conjugated crosslinking monomer, a solid-phase-free drilling fluid thickening agent, and a preparation method and application thereof. The conjugated crosslinking monomer has a stereoscopic alkyl structure and a conjugated diene structure, and is shown in the following formula. The conjugated crosslinking monomer is prepared by synthesizing an alkenyl compound with an adamantane compound in the presence of a catalyst. The conjugated crosslinking monomer is reacted with an alkenyl amide and an alkenyl sulfonic acid to obtain the solid-phase-free drilling fluid thickening agent. The thickening agent has good temperature resistance and salt resistance, and can improve the suspension and rock carrying performance of a clay-free drilling fluid system in a medium-deep well.

The application discloses a method of backwashing filter device based on electromagnetic control, which comprises a filter tank shell, a composite filter layer arranged in the filter tank shell, and an electromagnetic system, wherein the composite filter layer comprises magnetic filter material and non-magnetic filter material; the electromagnetic system comprises an electromagnet generator and a magnetic field generating unit arranged around the filter tank shell; the magnetic field generating unit comprises a plurality of electromagnet cores and coils wound around the electromagnet cores; the electromagnet generator is electrically connected with the coils through wires and provides direct current or alternating current to the coils. In the backwashing stage, the alternating action of the direct current and alternating current magnetic field guides the spatial reconstruction or micro-vibration of the magnetic filter material, thereby enhancing the filter layer flushing effect and improving the backwashing efficiency. The device realizes low energy consumption, low water consumption and high efficiency backwashing, and has the advantages of compact structure, high automation degree and strong adaptability, and is suitable for the solid-liquid separation process of mine dewatering water, industrial circulating water and sewage treatment.

This utility model discloses a biogas collection and utilization device, belonging to the field of biogas collection technology. It includes a collection tank for collecting biogas, with a deodorizing filter assembly connected to one side of the collection tank for deodorizing and filtering the biogas. The other end of the deodorizing filter assembly is connected to a fermentation tank for fermenting manure. An air inlet valve is provided at the top of the fermentation tank. The deodorizing filter assembly includes a filter box, which is connected to the collection tank and the fermentation tank via connecting pipes. The filter box has a filtration chamber and an adsorption chamber inside, and the filtration chamber and adsorption chamber are connected. A filter plate is installed inside the filtration chamber, and activated carbon is installed inside the adsorption chamber to adsorb odors from the biogas. This solution avoids impurities and odors in the collected biogas, improves the collection quality of the biogas, and makes the treated biogas more suitable for various application scenarios.

The utility model provides a kind of electroreflective working electrode, the electrode includes substrate layer, the functional layer of metal material and the first stable layer of sulfide material, and first stable layer forms strong chemical bonding interface with functional layer by metal-sulfur bond. By constructing strong chemical bonding metal-sulfur bond, effectively solve the problem of weak interlayer adhesion, easy to peel off, significantly enhance the mechanical stability and interface integrity of electroreflective working electrode, thereby substantially prolong the service life and optical performance durability of electroreflective working electrode.

The application discloses a pipeline operation ball bladder dismounting device with a protection structure and belongs to the technical field of pipeline maintenance. The device comprises an operating rod, the operating rod is provided in a hollow mode, one end of the operating rod is provided with a lower protection shell piece, the upper portion of the lower protection shell piece is provided with an upper protection shell piece, and the upper protection shell piece and the lower protection shell piece are both provided in an arc shape. When the rubber ball bladder needs to be placed in the interior of a pipeline, the rubber ball bladder can be first placed between the upper protection shell piece and the lower protection shell piece, then the upper protection shell piece and the lower protection shell piece are fixed on the upper and lower sides of the rubber ball bladder through an elastic limiting assembly, at the moment, the user can push the rubber ball bladder into the interior of the pipeline through the operating rod, and the upper protection shell piece and the lower protection shell piece can protect the rubber ball bladder from being punctured by impurities, welding slag or sharp objects on the pipe wall in the pipeline.

The utility model relates to the technical field of stirring tanks, and provides a stirring tank capable of quickly dismounting stirring blades, which comprises a stirring tank main body and a dismounting mechanism. According to the stirring paddle disclosed by the utility model, the mounting block, the mounting sleeve and the stirring paddle main body are arranged, and the mounting sleeve is connected with the mounting block, so that the stirring paddle main body can be mounted, then the mounting sleeve is clamped by the supporting plate and the cover plate to keep stable, the stress deformation between the mounting block and the mounting sleeve is avoided, and the stirring paddle main bodies with different shapes can meet different stirring requirements; the applicability of the stirring tank is improved, a supporting plate and a cover plate are arranged, the supporting plate is matched with the cover plate, the connecting position can be separated from materials, impurities attached to the connecting position or abrasion deformation is avoided, a connecting bolt and a spring pad are arranged, the supporting plate and the cover plate can be rapidly fixed through the connecting bolt, and the disassembly and assembly efficiency is improved; a spring pad can prevent a connecting bolt from loosening to influence stability during stirring, and a sealing ring and a sealing pad are arranged, so that the sealing ring can prevent external materials from entering the space between the supporting plate and the cover plate.