4results about How to "Has a purifying effect" patented technology

The invention discloses a broussonetia papyrifera source ecological pesticide or growth promoting agent and a preparation process thereof.The broussonetia papyrifera leaf extract is prepared from broussonetia papyrifera leaves, ethyl alcohol, dichloromethane, ethyl acetate and n-butyl alcohol, and the preparation process of the broussonetia papyrifera source ecological pesticide or growth promoting agent comprises the following steps that broussonetia papyrifera leaf raw materials are prepared; extracting a paper mulberry leaf raw material by using alcohol, adding petroleum ether to extract the solution collected in the step 2, collecting the obtained solution, adding dichloromethane to the solution collected in the step 3, adding ethyl acetate to the solution collected in the step 4, adding n-butyl alcohol to the solution collected in the step 5, collecting the obtained extract, and drying to obtain the paper mulberry leaf extract. Purifying the final extract of the broussonetia papyrifera leaves to prepare a pesticide or a growth promoting agent. According to the tree source ecological pesticide or the growth promoting agent and the preparation process thereof, the pesticide or the growth promoting agent is prepared from the extracts of the paper mulberry leaves, so that the germination of appressorium of pyricularia grisea spores of rice blast can be inhibited, the effect of promoting the growth of rice is achieved, and the yield of the rice is increased.

The utility model relates to the technical field of smoke purification for combustion performance detection, in particular to a smoke purification device for combustion performance detection of building materials, which comprises a detection treatment box, an adsorption dust removal mechanism is fixedly arranged on one side in the detection treatment box, and the adsorption dust removal mechanism comprises a control groove, a dust removal motor and a connecting pipe. The detection processing box is moved to a designated position through the universal wheels, the movable plate is opened through the push-and-pull handle, building materials needing to be detected are placed in the detection groove, combustion performance detection is conducted on the building materials through the detection module, and obtained data are finally transmitted to the console. After detection, the device extinguishes residual flames by utilizing a solution conveyed by a water tank, then a dust removal motor is started to adsorb and purify harmful dense smoke generated during combustion, finally, the harmful dense smoke is discharged out of the device, the device is provided with an atomization dust falling mechanism capable of being freely converted, and conversion between direct current water flow and atomized water flow can be carried out by rotating a rotating column.

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.

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.