3results about How to "Anti-pollution" patented technology

The utility model relates to the technical field of sampling bottles, and provides a sampling bottle drying device for detecting granularity of an oil sample, which comprises a box body, a drying box, a drying component and a drying device, wherein the drying box is fixedly arranged at the top of the box body; the drying assembly comprises a drying mechanism, a nitrogen cleaning mechanism, a lifting mechanism, a rotating mechanism, a plurality of spraying pipes, a U-shaped pipe and a plurality of connecting pipes fixedly installed on the outer side wall of the U-shaped pipe. A motor drives a lead screw to rotate in a sliding groove plate, a spraying pipe is adjusted upwards to stretch into a sampling bottle, gas in a filtering shell is extracted through a first air pump to be used for conducting hot air drying on the interior of the sampling bottle, and nitrogen in a nitrogen box is extracted through a second air pump to be used for cleaning the interior of the sampling bottle; and during air blowing and nitrogen blowing, the first gear is driven by the motor to rotate, and the second gear in linkage meshing connection drives the spray pipe to rotate on the rectangular frame, so that the drying and cleaning efficiency of the sampling bottle is effectively improved.

The application discloses a preparation method of a nanofiltration membrane with high chlorine resistance and pollution resistance. The nanofiltration membrane is prepared by the following steps: on the basis of an activated polytetrafluoroethylene microporous membrane, sequentially performing impregnation of an amine monomer and an acyl chloride monomer, then performing heat treatment, then grafting an amine group containing cyclic substance, and finally introducing a quaternary ammonium modification. The nanofiltration membrane prepared by the method has a magnesium sulfate retention rate of 98.0% after exposure to 24000 ppm.h of active chlorine, and the water flux recovery rate of bovine serum albumin is 95.0%, which is almost unchanged compared with that before exposure. It is shown that the nanofiltration membrane has excellent chlorine resistance and good pollution resistance.

The utility model provides an anti-fouling automatic silk reeling machine silk guide drum wheel which comprises a drum wheel core and drum wheel housings coaxially arranged on the two sides of the drum wheel core, and the drum wheel core and the drum wheel housings on the two sides are coaxially connected through axial fixing assemblies. The drum wheel core is provided with a rotary supporting assembly which is coaxial with the drum wheel housings on the two sides, and the drum wheel core is rotatably arranged on the axial fixing assembly through the rotary supporting assembly; the drum wheel cover shell is provided with a connecting part used for axially positioning the rotary supporting assembly, the connecting part is inserted into the drum wheel core and abuts against the side wall of the rotary supporting assembly, and an anti-fouling blocking face is arranged on the outer side of a rolling gap between the connecting part and the drum wheel core. According to the utility model, the rotation flexibility of the drum wheel core is provided, the inaccurate detection is avoided, and the anti-pollution advantage is also realized.