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59results about How to "Control accumulation" patented technology

Simple atmosphere pressure suspending electrode cold plasma fluid generator

The invention relates to a simple cold plasma jet flow generating device for the barometric suspended electrode, which belongs to the technical field of the plasma discharging reactor. The cold plasma jet flow generating device is characterized in that a main body of the device is a millimeter magnitude quartz tube, a gas inlet opening is arranged at one end connected with a gas supplying source, and a jet flow outlet opening is arranged at the other end; a pair of needle electrodes are embedded into the quartz tube above the jet flow outlet opening, both the electrodes are symmetrical in the radial direction, the needle electrode at one side connected with an alternating current power supply is adopted as a power electrode, and the other electrode at the other side is suspended in the air and adopted as the suspended electrode; through applying voltage, the electrodes discharge to generate plasmas which are sprayed out of the tube to form the jet flow through the action of flowing air. The jet flow generating device has the advantages that the needle electrode structure can reduce the generation of the jet flow and maintain the voltage; the suspended electrode is favorable not only for enhancing the utilization factor of the energy, but also for effectively controlling the discharging intensity and maintaining the stable discharging; the non-pressure plasma jet flow is characterized in low temperature, large length, low produced and maintained voltage, long continuous working time and simple structure.
Owner:DALIAN UNIV OF TECH

Preparation method of heavy metal soil repairing material in paddy field based on biocarbon blending fertilizer

The invention discloses a heavy metal soil repairing material in a paddy field based on biocarbon blending fertilizer. The biocarbon blending fertilizer is prepared by mixing biocarbon with chemical fertilizer; the biocarbon blending fertilizer is applied to soil, so that the effects of restoring heavy metal soil environments and improving soil physicochemical condition can be met, the effectiveness of nutrient elements of soils also can be affected, efficiency-increasing and production-increasing effects of carbon fertilizer are improved, and meanwhile, by utilizing the biocarbon subjected tospecial processing, the specific surface area is further improved, and thus, adsorption capability of pollutants in the soils can be enhanced; and saturated organic pollutants are decomposed througha microbial agent, so that the biocarbon can keep an adsorption effect on the pollutants in the soils for a long time, and improve a comprehensive treatment effect of the soils; and compared with conventional compound fertilizer, the biocarbon blending fertilizer disclosed by the invention has the advantages that accumulation of heavy metals is controlled, the yield of paddy rice can be increased,and the biocarbon blending fertilizer has popularization and application prospects in control of ecological environment pollution in the paddy field and application reduction and efficiency improvement of chemical fertilizer.
Owner:徐州得铸生物科技有限公司

Preparation method of diamond reinforced silicon carbide composite wafer

The invention discloses a preparation method of a diamond reinforced silicon carbide (SiC) composite wafer, and belongs to the field of semiconductor material preparation. The method comprises the following steps: plating a 5-20nm SiNx thin layer on a SiC carbon polar surface subjected to vacuum heat treatment at 800-1000 DEG C; and after microwave hydrogen plasma treatment is carried out for 1-5 min, methane with the hydrogen flow proportion being 5-10% is introduced, the operation lasts for 5-15 min, and diamond high-density nucleation and C-Si bond formation are achieved based on nitrogen atom escape and carbon atom permeation. And then, silane with the hydrogen flow proportion being 0.1-1% is introduced while methane is reduced to 3%-5% for growing diamond, the silane flow is slowly reduced within 10-30 min till closing, and the SiC/diamond composite gradient transition layer is deposited. And then repeating the circulation process of introducing nitrogen with the hydrogen flow proportion of 1-5% every 5-20 min in diamond growth and keeping for 1-5 min, closing the nitrogen and methane after the diamond reaches a certain thickness, slowly cooling to 600 DEG C or below in hydrogen plasma, then raising the temperature to 800-1000 DEG C, treating for 0.5-5 h, and slowly cooling, and finally, the diamond/SiC composite wafer material with low stress and strong combination is realized by polishing the diamond surface.
Owner:广东奔朗新材料股份有限公司 +2

Method for gas extraction on weak surrounding rock fully mechanized caving face

ActiveCN106761580APut an end to overrunOvercome the problem that the pre-pumping hole cannot be formedFluid removalGas removalGas concentrationCoal
The invention discloses a method for gas extraction on the weak surrounding rock fully mechanized caving face, and the method is suitable for a mine where the gas concentration of the caving face is liable to overrun in the top coal caving process of the thick coal seam weak surrounding rock fully mechanized caving face. A vertical pipe is constructed to the upper portion of a coal seam through a pneumatic anchor rod driller at the upper corner of an air return roadway of the fully mechanized caving face, the gas extraction vertical pipe is arranged in the coal seam, a large amount of gas generated in the top coal caving operation process is extracted timely, and accordingly the gas concentration of the fully mechanized caving face is reduced; the problem that under the condition of weak surrounding rock, hole-forming fails when oblique-crossing layer penetrating pre-extracting drilling is constructed on the upper portion of a goaf in the air return roadway is solved; the large amount of gas rushing out of fully mechanized caving face coal masses in the top coal caving operation process can be extracted, so that the gas concentration of the caving surface and the upper corner is reduced effectively; and meanwhile within the period of caving surface advancing, the gas of the goaf behind the caving face can be further extracted, the emission amount of the gas in the goaf is reduced, and the gas concentration of the caving surface is reduced. The structure is simple, mounting is convenient, operation is easy and convenient, and practicability is high.
Owner:CHINA UNIV OF MINING & TECH

Chain type precise quantitative feeding equipment for cage rearing breeding hens

The invention discloses chain type precise quantitative feeding equipment for cage rearing breeding hens. The chain type precise quantitative feeding equipment comprises a chain type feeding mechanism arranged in feeding troughs and used for automatically conveying feed, feed boxes arranged corresponding to layers of corresponding cage body feeding troughs, a feed conveying mechanism used for quantitatively conveying the feed to the feed boxes and a feed tower used for storing the feed, wherein an independent feed receiving opening is formed in the top of each feed box; and the feed tower quantitatively conveys the feed to different feed receiving openings through the feed conveying mechanism, the feed boxes quantitatively release the feed into the feeding troughs through the chain type feeding mechanism, and feed blocking devices used for controlling the feeding duration are arranged above the feeding troughs. Each feed box is independently provided with the feed receiving opening, the feed in the feed tower is quantitatively conveyed into each feed box through the feed conveying mechanism, the feed is quantitatively supplied only to the feed box corresponding to one feed receiving opening each time, and then accurate and quantitative feeding of chickens is realized through uniform feed release of the chain type feeding mechanism and control over the ingestion time of the feed blocking devices.
Owner:青岛大牧人机械股份有限公司

Ventilation and purification circulating device capable of effectively reducing pollutants

The invention discloses a ventilation and purification circulating device capable of effectively reducing pollutants, and belongs to the field of air purification. The ventilation and purification circulating device capable of effectively reducing pollutants. The ventilation and purification circulating device comprises an air inlet pipeline, a dust removal channel, a microorganism filtering system, a secondary filtering module, an air sampling head, a negative ion detection and supplement system, an air outlet pipeline and the like, and is arranged at a fresh air inlet of an air conditioningunit according to the characteristics that an air conditioning system is large in ventilation quantity and high in fresh air dust content. According to the device, an air pipe type electronic dust removal technology is used for removing dust, a biofilm culturing technology is used for eliminating bacteria to the maximum extent, multiple layers of filter screens in the secondary filtering system are used for filtering fresh air in a multiple mode, the air sampling head is used for sampling and warning the content of accumulated dust in an air pipe, and the negative ion chamber technology is used for carrying out concentration detection and automatic supplement on the negative ion content in the filtered air, so that the removal rate of small and medium-sized particulate matter in the air isguaranteed, and the air quality and the human body comfort are effectively improved.
Owner:ANHUI UNIVERSITY OF ARCHITECTURE
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