41results about How to "Strong dustproof ability" patented technology

The invention provides a windproof and dust suppression device. The windproof and dust suppression device comprises a frame body and a windproof device, and further comprises a water spraying device, a fixing device and fixing supports. The windproof device comprises a plurality of first windproof screens, a plurality of second windproof screens and a plurality of stand columns, every two first windproof screens are fixedly connected through the stand columns, and every two second windproof screens are fixedly connected through the stand columns. The water spraying device is arranged on the frame body, and comprises water pipelines and a plurality of spraying heads; and the spraying heads are communicated with the water pipelines through thin pipes. The water pipelines are connected with an external water pump, and the frame body is provided with the fixing device and the fixing supports; the fixing device and one end of each fixing support are connected with the frame body; and the fixing device and the other end of each fixing support are buried in the ground. The windproof and dust suppression device has the beneficial effects that the structure is simple, and operation is convenient; the double-layer windproof screens are obtained, so that the dustproof action is higher; and an area needing water spraying can be determined according to actual needs.

The invention relates to the radio-positioning technical field, particularly a millimeter-wave time-division passive frequency modulation multi-channel automotive anti-collision radar, which is realized through the following steps: adopting the full-phase parameters to receive / transmit reference signals; asynchronously controlling the time division and the time sequence; watching the targets which are prone to collision on the w surface in an omni-directional manner through DSP cyclic scanning wave beams by a quasi-optical dielectric lens antenna circular array; controlling the time division SAW multi-channel passive frequency modulation through road condition cameras, an own vehicle speed, a GPS signal MCU; sending to antenna array to transmit through an up-converter, an amplitude limiter, T / R3, a frequency multiplier and a power amplifier, T / R2, an isolator and a wave beam switch; filtering the returning wave in a conjugating and matching manner with the transmitting SAW through the antenna array, the wave beam switch, the isolator, R / T1, the low-noise high amplifier, a down-converter, a medium amplifier, the time-division circuit and the SAW multi-channel signals; processing and controlling DSP and MCU; controlling the false-alarm when encountering a plurality of road barrier targets DSP and confirming the position, the distance and the relative speed; displaying the three-dimensional image on a CRT, wherein the closer the vehicle gets to the target, the higher the resolution power is; identifying the nearest distance to the vehicle; giving an alarm when the distance is smaller than the safety distance; and intelligently avoiding the barriers or reducing or braking if the distance is close to a risk distance, wherein the control is determined based on the actual condition of the road surface environment combined with the own vehicle speed and the GPS data, thereby improving the travelling safety.

The invention discloses a method for increasing the water absorption height of paper, which belongs to the technical field of papermaking. Firstly, the ratio of raw materials is stabilized. The raw materials of paper are coniferous and broad-leaved materials. The ratio is: 75-80:20-25, and then In the pulping process, the kappa value of the pulp is controlled to be 35-43, and finally the paper with improved water absorption height is obtained through beating, pulping, screening, sizing, mesh dehydration forming, pressing, drying, and rolling. This method enables the production of The water absorption height of fireproof board core paper, wet curtain paper and other paper types meets the requirements, and not only improves the water absorption height, but also improves the physical strength, and the produced paper has good dustproof performance, which can fully meet the needs of paper production.

The present invention relates to an ultraweatherability self-cleaning paint for outer wall, and its composition contains pigment filling material, moistening dispersing agent, defoaming agent, thickening agent A, B and C, polymer emulsion, anti-mildew bactericide, film-forming adjuvant and water, etc. Said emulsion paint has the water-proofing property, good dirt resistance and anti-ageing property. In particular, the anatase titanium dioxide powder body is added, it make said paint has self-cleaning function. The invention also provides preparation method.