2results about How to "Has a purifying effect" patented technology

This invention discloses a method for preparing a lightweight spinel-corundum-aluminate refractory material. First, by simulating the microstructure of sintered magnesia, a multiphase material is constructed with magnesia-alumina spinel as the main crystalline phase and calcium aluminate as the intergranular and secondary crystalline phases. This results in a spinel-calcium aluminate-calcium disaluminate multiphase material with controllable crystalline phase distribution and pore composition. Next, using this multiphase material as aggregate and corundum-spinel as the matrix, the materials are batched according to a specific particle size distribution, pressed into shape, and fired at high temperature. By introducing the spinel-calcium aluminate-calcium disaluminate multiphase material and utilizing calcium ion migration, this invention enables the preparation of a lightweight spinel-corundum-aluminate refractory material with microporous aggregate and a dense matrix. The material's load-bearing capacity at both room temperature and high temperature is not lower than (or even higher than) that of heavy refractory materials of the same material. This synergistically improves the thermal insulation, high-temperature load-bearing capacity, and resistance to media erosion of this type of lightweight refractory material.

This utility model relates to the field of building technology, specifically to a building drainage device. An anti-clogging component can be submerged and installed at the inlet of a building's main drainage pipe. It includes an anti-clogging cylinder, a first filter element, and a second filter element. The first filter element is located at the top of the anti-clogging cylinder; the second filter element is fixed to the bottom of the anti-clogging cylinder. The filter holes of the first filter element are smaller than those of the second filter element. A cleaning component is located on the side of the building's main drainage pipe outlet and includes a mounting base, a slider, and a cleaning plate. The mounting base is fixed to the building structure, the slider is slidably connected to the mounting base, one end of the cleaning plate is fixedly connected to the slider, and the lower side of the cleaning plate abuts against the top surface of the first filter element to remove debris filtered from the top surface of the filter element. This utility model's building drainage device can achieve multi-stage filtration of drainage pipes, reducing drainage pipe blockage. The cleaning component can remove large debris filtered from the upper side of the first filter element to one side for easy cleaning.