37results about How to "Reduce silt" patented technology

Provided is a diesel engine exhaust gas purification device that can remove with high efficiency PM - in particular, the SOF portion thereof or sulfate components - in the exhaust gas of a diesel engine that uses, in particular, heavy oil or an even lower quality of fuel, and that can easily and reliably suppress the emission of materials that pollute the environment or materials that impact ecosystems. The exhaust gas purification device for a diesel engine that uses heavy oil or an even lower quality of fuel is characterized by a configuration in which an exhaust gas cooler is provided to an exhaust pipe that extends to the exhaust manifold of an engine; on the downstream side of the exhaust gas cooler, an electric precipitation means is provided for removing PM contained in the exhaust gas having SOF and ISF as main components; a branching part for diverting a portion of the exhaust gas as EGR gas is provided at the downstream-side exhaust pipe of the electric precipitation means; and the EGR gas is recycled by engine air-intake via an EGR pipe that extends to the branching part and an EGR valve.

The invention relates to pipeline desilting equipment for hydraulic engineering and a using method, and is applied to the technical field of pipeline desilting, the pipeline desilting equipment comprises a water storage tank for receiving rainwater, the water storage tank is connected with a plurality of spraying assemblies for washing the inner wall of a pipeline, and the spraying assemblies are connected with the water storage tank through a water pump; the multiple spraying assemblies are sequentially arranged in the axial direction of the pipeline, and a trigger mechanism used for starting and stopping the water pump is arranged in the water storage tank. The pipeline dredging device has the effect of conveniently dredging the pipeline.

The invention discloses a suspended solid (SS) filter, comprising a rectangular frame, a motor, wherein a transmission shaft penetrates through each of the left end and the right end of the rectangular frame, and a transmission wheel is mounted on each transmission shaft; a transmission chain is installed between the left and right transmission wheels, a brush scraping plate is fixed on the side of the transmission chain and can rotate together with the transmission chain; a plurality of brushings are arranged on the brush scraping plate and are perpendicular to the surface of the brush scraping plate; the motor is connected to the transmission shaft; a filtered mud collection box is arranged at one end of the rectangular frame, and a brush scraper for scraping off SS from the brushing isinstalled at the upper portion of the filtered mud collection box. The SS filter can adsorb and intercept SS in sewage, the concentration of SS in sewage filtered by the SS filter can be greatly reduced, and the problem of clogging does not occur during the filtering process; while SS is filtered, nutrients such as nitrogen and phosphorus carried in SS can be removed; a plurality of tree-structured brushing embedded in each other can improve the SS filtration efficiency.

The invention discloses a pond food field area contamination drainage system with the back flushing function. The system is characterized in that the contamination drainage system is composed of a pond bottom contamination drainage system and a back flushing system. When the contamination drainage system is used for feeding in a food field area, contamination is drained every other 3-5 days. According to the specific method, firstly, a contamination drainage valve is opened for draining contamination, then, the contamination drainage valve is closed, a back flushing pump is started, contamination drainage is performed again after the back flushing pump is turned off, and organic matter at the pond bottom of the food field area can be basically drained through 2-3 times of back flushing contamination drainage. According to the system, contamination drainage is thorough, accumulation of the organic matter at the bottom of the pond food field area is little, time is short every time contamination drainage is performed, fish feeding is not affected, good pond water quality can be kept, and the yield and the benefits of pond cultivation are increased; back flushing contamination drainage is continuously performed in the cultivation period, sludge at the pond bottom can be kept little for a long time, the effective water body of a pond is large, it is beneficial to yield increase, and besides, the pond does not need frequent large-scale dredging, and production cost can be reduced.