47results about How to "Not easy to cause accumulation" patented technology

This application relates to an initial rainwater collection device for municipal roads based on rain and sewage diversion, which includes a rainwater inspection well, on which a rainwater grate is arranged, and a filter box for filtering rainwater. The filter box is arranged in the rainwater inspection well to filter The box includes a first box body, a second box body, a third box body, a first filter plate, a second filter plate and a third filter plate, the first box body is connected with the rainwater inspection well, and the first filter plate is arranged on the first In the box, the second filter plate is arranged in the second box, and the third filter plate is arranged in the third box, the filter holes on the first filter plate, the filter holes on the second filter plate and the filter holes on the third filter plate The holes become smaller successively, and a drain is provided at the bottom of the third box body. This application improves the problem that more and more impurities are accumulated in the rainwater inspection well, and the rainwater cannot be smoothly circulated in the rainwater inspection well, and even easily overflows from the rainwater inspection well, resulting in the accumulation of rainwater on the road surface and affecting the environment.

The invention discloses a nitrogen-doped molybdenum disulfide / C / carbon nanotube composite material. The preparation method comprises the following steps: taking formaldehyde as a bridge, and carryingout moderate crosslinking on formaldehyde and melamine to form a nitrogen-doped precursor; carrying out hydrothermal reaction to make the nitrogen-doped precursor, an active component precursor and carbon nanotubes interact and uniformly fused; and carrying out solvent-free microwave reaction to synthesize the high-nitrogen-content-doped molybdenum disulfide / C / carbon nanotube composite material. In the preparation process of the composite material, loss caused by sublimation of the nitrogen-doped precursor in the heating process in the traditional nitrogen doping process is avoided, the nitrogen doping efficiency is improved, the reaction conditions are progressively increased from mild to intense, and uniform fusion of the nitrogen-doped precursor, the active component precursor and the carbon nanotubes through interaction is realized. The prepared nitrogen-doped molybdenum disulfide / C / carbon nanotube composite material is good in stability, not prone to denaturation in air, easy to store and large in specific surface area, a good channel is provided for lithium ion transmission when the nitrogen-doped molybdenum disulfide / C / carbon nanotube composite material is used as a lithiumion battery negative electrode material, and large specific capacity and good cycling stability are shown.