4results about How to "Evenly groomed" patented technology

The invention discloses a preparation method of a high-stability photoresponse covalent organic framework membrane and application of the high-stability photoresponse covalent organic framework membrane in selective separation of multiple components. 4-azido azobenzene is prepared by carrying out azido reaction on 4-aminoazobenzene in an acidic aqueous solution, and then a BPTA-TAPB-COF membrane is used as a matrix to prepare the high-stability photoresponse covalent organic framework membrane. 4-azido azobenzene is efficiently grafted to the pore wall of the BPTA-TAPB-COF membrane through a click chemical reaction, the photoresponse covalent organic framework membrane is constructed, and the covalent organic framework membrane can be used for multi-component selective separation and is suitable for multi-component systems with different sizes. The azobenzene group in the pore channel of the prepared Azo-COF membrane is subjected to reversible cis-trans isomerization under the irradiation of ultraviolet / visible light, the response speed is high, and the cycle performance is good; the Azo-COF membrane has good application in the light-operated nanofiltration process, the performance of the Azo-COF membrane is not reduced after the Azo-COF membrane is continuously recycled for 12 days, and the structure of the Azo-COF membrane is kept stable.

A range hood has a recessed cavity at the bottom of its fixed housing to accommodate a lifting air intake. The lifting air intake has a smoke-collecting chamber. An oil guide plate is provided on the front side of the recessed cavity. The front side of the oil filter plate at the top of the smoke-collecting chamber has a forward-sloping surface extending downwards. An oil guide connecting plate extending upwards and backwards is installed on the oil guide plate. The rear part of the oil guide connecting plate has an extension extending below the forward-sloping surface. A first oil guide groove is formed between the oil guide connecting plate and the oil guide plate. Oil falling into the first oil guide groove enters the oil cup through oil guide channels on both sides of the fixed housing. The first oil guide groove of this range hood can smoothly guide the condensed oil on the front side. After setting the oil guide connecting plate, the height of the rear plate below the oil guide plate, which cannot hold oil, is reduced, and the length of the forward-sloping surface in the front-back direction is shortened. This helps to reduce the size of the air intake, making it less likely for the air intake to interfere with the solid housing. Sufficient installation space is left on the front side of the bottom of the housing for installing components such as lighting. The structural layout is more compact and reasonable.

The utility model discloses a vibrating feeder panel structure which comprises a panel, a plurality of stepped boss sets are arranged on the surface of the panel at equal intervals in the conveying direction, each stepped boss set is composed of three bosses, the heights of the three bosses are sequentially increased in the panel conveying direction, and a stepped pushing structure is formed. The boss is of a composite structure and sequentially comprises an arc-shaped wear-resistant head part, an elastic connecting part and a bottom plate from top to bottom; the upper end of the elastic connecting part is fixedly connected with the arc-shaped wear-resistant head part, and the lower end is fixedly connected with the bottom plate; according to the panel structure of the vibrating feeder, the stepped boss sets with the heights gradually increased in the conveying direction are arranged on the surface of the panel, a stepped pushing structure is formed, iron ore aggregates can be effectively dispersed, accumulation is avoided, and the conveying efficiency is improved.

The invention relates to a bismuth oxide core-shell nanoparticle modified porous defect-rich carbon nitride material as well as a preparation method and application thereof. The method comprises the following steps: calcining urea in an air atmosphere to obtain the bismuth oxide core-shell nanoparticle modified porous defect-rich carbon nitride material; calcining in an atmosphere to obtain porous defect-rich carbon nitride; mixing an ethylene glycol liquid, a nitric acid solution, polyvinylpyrrolidone and the solid at room temperature to obtain a mixed solution, placing the mixed solution in a reaction kettle, carrying out water bath heating to generate a precipitate, filtering out the precipitate, and cleaning, drying and grinding the precipitate to obtain a powdery solid, the bismuth oxide core-shell nanoparticle modified porous defect-rich carbon nitride material is obtained. The material prepared by the invention is high in response capability to the sum.