2results about How to "Large diffusion radius" patented technology

The present application relates to sewage treatment and water oxygenation technical field, and disclose a kind of integrated solar-powered underwater rotary aerator, comprising: buoyancy carrier mechanism, for providing the floating support of device on water surface;Photovoltaic energy collection mechanism, installed above the buoyancy carrier mechanism, for converting solar energy into electrical energy and storage;Power transmission mechanism, set below the buoyancy carrier mechanism, with the photovoltaic energy collection mechanism electric connection, for generating rotary power and transmitting power to underwater;Rotary aeration mechanism, connected to the lower end of the power transmission mechanism, for releasing gas to water body in rotary state, forming diffusion aeration.The present application converts solar energy into electrical energy by photovoltaic energy collection mechanism and storage, provides operating energy for driving motor and gas supply mechanism, realizes in the water environment far from shore using solar power self-powered, get rid of the dependence on long distance cable, reduces deployment cost and maintenance difficulty.

This utility model relates to a grouting and water-blocking device for treating water inrush at a well working face. It includes a water-blocking structure and construction tools. The water-blocking structure is positioned above the water-rushing working face and below the static water level. The structure comprises, from bottom to top, an isolation filter layer, a pressure cushion layer, and a single-liquid grout stop layer. The construction tools include a grouting pipe and a high-pressure grouting pump. The upper end of the grouting pipe is connected to the high-pressure grouting pump, which is located outside the well. The grouting pipe consists of a seamless steel pipe body with several outwardly extending grout nozzles in the upper middle part. A limiting device is located below the grout nozzles on the seamless steel pipe, allowing grout to flow only from the nozzles when activated. This utility model employs a three-layer combined grouting and water-blocking structure consisting of an isolation filter layer, a pressure cushion layer, and a single-liquid grout stop layer. The grout stop layer structure formed by underwater integrated casting is more robust, enabling rapid and efficient sealing of water inrush at the working face and reducing project costs.