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261results about How to "Save volume" patented technology

Defluorination absorbing material based on aluminum base composite oxides and its preparation method and use and special device of the preparation method

ActiveCN101507911AExcellent adsorption and defluorination performanceGood defluoridation effectOther chemical processesChemical reactionWater source
The invention belongs to the field of materials for removing fluorine in water, and in particular relates to a fluorine-removal adsorption material based on alanate and aluminum-based composite oxide, a preparation method and uses of the same, and a special device for the preparation method. The fluorine-removal adsorption material based on the aluminum-based composite oxide, which is prepared by a heterotopic preparation method or an in-situ preparation method, comprises two parts of an active composition and a porous supported substrate, wherein the active composition is the aluminum-based composite oxide prepared from an aluminum salt solution and an inorganic alkaline solution by chemical reaction; and the aluminum-based composite oxide is loaded on the surface of the porous supported substrate by an in-situ loading method, and the mass ratio of the aluminum-based composite oxide to the porous supported substrate is 0.25-25:100. The fluorine-removal adsorption material based on the aluminum-based composite oxide can be used for the adsorption of fluorine pollutants in the water and particularly common fluorine in underground drinking water sources. In addition, the material can also be used for removing pollutants such as arsenic, iron, manganese, phosphate, and the like in the water.
Owner:清华苏州环境创新研究院

A Tarpaulin Shelter with Collapsible Doorframes

The present invention relates to a tarpaulin shelter with collapsible doorframes, it includes doorframes, the lower end of which is connected to the base and the upper end is connected with corner joint and cross beam, characterized in that the doorframe includes at least three upright poles, in which at least a set of x-scissor member are arranged between the middle upright pole and each side upright pole, said scissor is composed of two cross rods of which the middle portions are mutually hinged together. One end of each cross rod is hinged with the fixing collar of the corresponding upright pole; the other end is hinged with the movable collar corresponding to upright pole. Due to the fact that each cross rod can rotate around its middle portion and the corresponding movable collar and fixed collar, thereby when the upright pole is pulled through the rotation of the cross rod and the shifting movement of the movable collar on the upright pole, the distance between upright poles can be changed, thereby when package is made, the volume is smaller, and it is convenient in transportation and storage. When the use is needed, stretching and collapsing is convenient and rapid. To this end, the plug-in locating mode is used to achieve the purpose of rapid assembling. The present invention features simple structure, good practicality, therefore its use is worth to be widespread in the structure of tarpaulin shelters.
Owner:WU WEIDAN

Four-beam laser three-dimensional imaging optical system based on coaxial three-mirror-anastigmat afocal telescope

The invention discloses a four-beam laser three-dimensional imaging optical system based on a coaxial three-mirror-anastigmat afocal telescope. The four-beam laser three-dimensional imaging optical system is characterized in that: four paths of laser are scattered through a target surface, enter a novel coaxial three-mirror-anastigmat afocal telescope receiving system via four off-axis viewing fields respectively, are reflected through viewing field reflection mirrors, and adopt color separation filters for separating wave bands; and a laser receiving channel can achieve signal acquisition of laser echoes, and an area array imaging channel can achieve shooting of a laser footprint two-dimensional space target, thereby achieving multi-beam laser three-dimensional imaging. The four-beam laser three-dimensional imaging optical system solves the difficulty that multi-beam laser reflection loops share one receiving telescope in the existing laser active detection technology, the large viewing field coaxial three-mirror-anastigmat afocal telescope is adopted, the laser receiving channel and the area array imaging channel are combined by utilizing the off-axis viewing fields, and at least four beams of laser beam echoes can be measured on the layout.
Owner:SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI

Active sludge floatation thickening device and method for membrane biological reaction tank process

The invention relates to an active sludge floatation thickening device and method for a membrane biological reaction tank process. The device is provided with a flocculation reaction tank, a floatation tank and a water storage tank, wherein a blender, a sludge feeding port and a doser are arranged in the flocculation reaction tank; the floatation tank is provided with dissolved air release regions and floatation regions separated by half weirs, a sludge discharge trough and a sludge scraper, and a sludge collection pipeline is arranged at the bottom of the floatation tank; and the water storage tank is connected to the back side of the floatation tank, and is provided with a level regulator and a quick air-dissolving device. The method comprises the following steps: 1, controlling the discharge amount of surplus sludge; 2, adding a flocculant; 3, mixing the flocculated sludge with the air-dissolved water to form adhesions; 4, regulating surface solid loads in the floatation regions; 5, discharging clear solutions in the floatation regions; and 6, discharging the sludge. The invention is applicable to activated sludge thickening treatment in the membrane biological reaction tank process, and has the advantages of simple structure, reasonable design, convenient operation process and favorable effect.
Owner:BEIJING DRAINAGE GRP CO LTD

Frequency conversion power module of all-in-one machine of explosive-proof frequency conversion motor

The invention provides a frequency conversion power module of an all-in-one machine of an explosive-proof frequency conversion motor. The frequency conversion power module comprises a rack, an IGBT (Insulated Gate Bipolar Translator) element, a direct current capacitor, a rectifier diode, a composite low-induction busbar, an alternating current laminated busbar, a drive circuit assembly, a control circuit assembly, a water-cooled heat sink, a discharge resistor, a soft high pressure water intake pipe, and a high pressure water exhaust pipe. A core element of a frequency converter core is a water-cooled power module integrated by the frequency conversion power module, and has a high power density. The core element can be disassembled entirely, and is convenient to maintain and replace in a mine. The frequency conversion power module is different from the prior art in that components in the power module are arranged in a distributed mode, and are not convenient to maintain and replace in the mine when the power module breaks down. According to the water-cooled heat sink, high pressure water drawn from the ground can be directly applied to carrying out the water cooling heat dissipation, thereby replacing the prior art that an independent set of circulating cooling water device is required in the mine. According to the frequency conversion power module, the cost is reduced, and the area and the volume of the equipment in the mine are saved. The power module provided by the invention is convenient to maintain and replace.
Owner:CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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