10results about How to "Avoid wrapping" patented technology

This invention relates to the field of wastewater treatment, specifically a wastewater treatment device, including an electrolytic cell with an electrolysis assembly installed on it; it also includes a centrifugal sedimentation mechanism and a reciprocating stirring mechanism, which cooperate with each other; the centrifugal sedimentation mechanism includes a centrifuge cylinder with a turbine installed on it, and a rotation drive assembly installed on the bottom outer wall of the electrolytic cell; the reciprocating stirring mechanism includes a connecting frame with several rotating tubes connected to it, the bottom of which is connected to a stirring rod via a mounting base; a drive gear placed on the rotating tubes; and a rack and pinion reciprocating frame meshing with the drive gear. This invention utilizes the centrifugal sedimentation mechanism and the reciprocating stirring mechanism to achieve rapid sedimentation of impurities in wastewater, and the precipitated wastewater solution is discharged into the electrolytic cell through the top opening of the centrifuge cylinder for electrolytic sedimentation, thus facilitating rapid sedimentation of wastewater.

This invention provides a method for complexing and leaching beryllium from lepidolite leaching residue. The lepidolite leaching residue is mixed with a sulfuric acid solution containing DTPA, and the pH is adjusted to 0.1-1.5, the DTPA concentration to 0.03-0.1 mol / L, and the solid-liquid ratio to 1g:8-15mL. The resulting slurry is ball-milled, and the exposed beryllium is in situ complexed by DTPA through mechanochemical processes to disrupt the mineral phase lock-in. After solid-liquid separation, a beryllium-containing filtrate and purified residue are obtained. This invention achieves a beryllium leaching rate of over 60%, effectively solving the problems of deep beryllium lock-in and deactivation of chelating agents under strong acid conditions. The process operates at room temperature and low energy consumption, showing promising prospects for industrial application.

This invention provides an imidacloprid recrystallization refining and purification device, belonging to the technical field of purification devices. It includes a mixing chamber inner liner, with a mixing chamber outer shell fixedly installed outside the inner liner. The inner wall of the mixing chamber outer shell and the outer wall of the mixing chamber inner liner enclose a sealed heating chamber. A crystallization chamber inner liner is provided on the side of the mixing chamber outer shell, and a cooling crystallization tube is provided inside the crystallization chamber inner liner. An adaptive disturbance mechanism is provided inside the crystallization chamber inner liner. This adaptive disturbance mechanism can adjust the disturbance amplitude of the imidacloprid solution according to its crystallization degree. In this invention, by providing an adaptive disturbance mechanism, core components such as a float, a swinging linkage, a telescopic rod, and a stirring plate are integrated. The float senses the density change of the imidacloprid solution in real time at each crystallization stage, generates corresponding buoyancy based on the density, and achieves lifting and lowering. This, in turn, links the swinging linkage to swing around the slider on the limiting post, driving the telescopic rod to extend and retract radially along the sealed tube, ultimately achieving adaptive adjustment of the disturbance amplitude of the stirring plate.

The application relates to the technical field of solid-liquid reaction equipment, in particular to a device for solid-liquid reaction. The device is characterized in that a liquid inlet is arranged on the side wall of a reaction body near the top end, so that liquid-phase materials can be fed from the top of the reactor; the disturbance suspension disc is combined with the hollow shaft to make up-and-down reciprocating motion, so that high-concentration liquid-phase materials gradually flow to the bottom of the reaction body; the solid-phase materials are gradually fed into the feeding pipe through the spiral conveying mechanism, and then enter the bottom of the reaction body through the feeding pipe to contact and react with the low-concentration liquid-phase materials formed by reaction; when the disturbance suspension disc makes up-and-down reciprocating motion with the hollow shaft, the solid-phase particles are disturbed to suspend upward, and then contact and react with the liquid-phase materials with higher concentration, so that the relative amount or relative concentration of the solid-phase materials and the liquid-phase materials when they contact is weakened, the intensity of the reaction is weakened, the safety is improved, the small solid-phase materials can be prevented from being wrapped in the product, and the thoroughness of the reaction is improved.

The invention belongs to the technical field of air purification materials, and discloses an antibacterial formaldehyde removal catalyst as well as a preparation method and application thereof. The antibacterial formaldehyde removal catalyst comprises a perylene quaternary ammonium salt-graphene composite antibacterial agent, a catalytic active component, an inorganic biochar binder and a pore forming agent, manganese dioxide granulation is achieved by constructing a porous framework, the activity of manganese dioxide is reserved, graphene inhibits agglomeration through a flexible sheet layer and establishes a conductive path, and the common core lies in that through structure fixation instead of dense wrapping, the smoothness of a reactant diffusion channel is maintained to the maximum extent while the particles are endowed with mechanical strength, and the mechanical performance of the particles is improved. Shielding and sintering of active sites in the granulation process are avoided, so that the catalytic activity of manganese dioxide is efficiently reserved; the catalyst has a dual-function integrated effect, and also has efficient room-temperature catalytic formaldehyde removal capability and broad-spectrum antibacterial capability, so that the structure of an air purification system is simplified.

The application discloses a kind of low corrosion low temperature resistant ship water film forming foam extinguishing agent and preparation method thereof.The extinguishing agent is made of deionized water, 1,2-propanediol, sodium lignosulfonate, alkyl polyglycoside, polyether modified heptamethyltrisiloxane, sodium molybdate dihydrate, methyl benzotriazole, xanthan gum and triethanolamine.In the system, sodium molybdate dihydrate and sodium lignosulfonate are coordinated and crosslinked to form a three-dimensional skeleton under the buffer of triethanolamine, and the hydrophobic segment of the surfactant is intercalated and anchored in the hydrophobic microzone inside the skeleton.During preparation, 1,2-propanediol is used to pre-disperse polymer powder, the crosslinking rate is controlled by adding triethanolamine in batches, and the surfactant is added after the system is cooled to complete the cold intercalation.The application limits the self-aggregation and precipitation of surfactant at low temperature, avoids the problem of polymer water core and excessive crosslinking, maintains the stability of rheology, and effectively reduces the corrosion of ship metal equipment.

This invention discloses a method for removing impurities from ferrous sulfate, a byproduct of titanium dioxide production, comprising the following steps: 1) taking ferrous sulfate and preparing a saturated solution; 2) adding dilute phosphoric acid, stirring thoroughly, and filtering to remove insoluble matter; 3) adding an appropriate amount of ammonia to the obtained solution, filtering, and evaporating the filtrate; 4) slowly stirring and cooling the remaining solution until the solution temperature drops to 10°C, centrifuging to obtain primary crystals and primary crystallization mother liquor; 5) dissolving the obtained primary crystals again and preparing a saturated solution, repeating steps 3) and 4) to obtain secondary crystals and secondary crystallization mother liquor; 6) dissolving the secondary crystals to prepare a ferrous sulfate solution, which can be directly used for the preparation of battery-grade iron phosphate. This method uses phosphoric acid, ammoniation, and recrystallization to remove impurities from ferrous sulfate through multiple processes. After impurity removal, the heptahydrate ferrous sulfate solid has high purity and low metal impurity content, and can be directly used for the synthesis of battery-grade iron phosphate after dissolution.

The application provides a synthesis process of hexamethyldisilazane. The synthesis process comprises the following steps: adding trimethylchlorosilane into liquid ammonia, then performing high-pressure stirring reaction to obtain a reaction liquid; performing layer separation, and performing rectification on the lower layer of the reaction liquid to obtain hexamethyldisilazane; performing pressure relief on the upper layer of the reaction liquid, and ammonia gas is generated after the liquid ammonia is vaporized, and ammonium chloride solid is precipitated; performing reduced-pressure drying on the ammonium chloride solid, desorbing the ammonia gas adsorbed on the ammonium chloride, and obtaining refined ammonium chloride. The reaction does not need to add any solvent, the reaction rate is adjusted by controlling the dropping speed of trimethylchlorosilane, and the generated by-product ammonium chloride is completely dissolved by controlling the addition amount of liquid ammonia, so that the mass and heat transfer effects of the reaction are ensured, the product conversion rate is improved, the reaction time is shortened, and the product is easy to separate. The method avoids the use of solvent, generates less waste liquid, is green and environmental protection, and is low in cost.

This invention discloses a die-cast water-electricity separation smart toilet instant-heating cleaning component, including a heating chamber, an upper cover, a lower cover, a heating element, a heating switch, a first thermostat, a second thermostat, a temperature sensor, and a controller. The heating chamber has an integrally connected partition plate dividing its interior into an upper flow channel and a lower flow channel. The heating element is embedded in the partition plate, with both ends exposed on the outside of the heating chamber. The operating temperature set by the first thermostat is lower than that set by the second thermostat. The heating chamber, partition plate, upper cover, and lower cover are all made of thermally conductive metal. This invention also provides a heating method for the above-mentioned die-cast water-electricity separation smart toilet instant-heating cleaning component. This invention can extend the water flow path, achieve sufficient heat exchange, completely separate water and electricity, and provide triple temperature control for power-off protection, improving heating efficiency and dry-burning tolerance.

The invention discloses a waste metal comprehensive utilization pretreatment device and method. The waste metal comprehensive utilization pretreatment device comprises a cleaning machine body, and a liquid outlet pipe communicating with the interior of the cleaning machine body is arranged on the side surface of the cleaning machine body; the turnover mechanism comprises a driving assembly mounted on the side surface of the cleaning machine body, a turnover mesh box rotationally arranged in the cleaning machine body, an extension plate arranged on the turnover mesh box, a supporting cylinder arranged at the opening end of the turnover mesh box and a hollow protective cover plate mounted at the top of the supporting cylinder; the scrap metal cleaning device has the beneficial effects that the overturning mesh box is of a mesh structure and is matched with the driving assembly to achieve 360-degree stable overturning, accumulated scrap metal is continuously collided and separated in the cleaning process, the problem that middle-layer materials are wrapped is thoroughly avoided, it is ensured that the surface of each piece of scrap metal can make full contact with cleaning liquid, and the cleaning efficiency is improved. The technical defects that a traditional device is uneven in cleaning and insufficient in cleanliness are fundamentally overcome, and the pretreatment quality is remarkably improved.