1results about How to "Avoid Metal Fatigue" patented technology

The application discloses a petroleum conveying pipeline backwashing valve and relates to the technical field of valves.The petroleum conveying pipeline backwashing valve comprises a connecting pipe provided with threaded caps at two ends, a mounting box, a switching mechanism arranged on the mounting box and used for switching the filtering area of a filter plate, a circular plate slidingly connected to the mounting box, a first L-shaped plate fixedly connected to the sidewall of the circular plate, a second L-shaped plate fixedly connected to the side of the first L-shaped plate away from the connecting pipe, and a switching block fixedly connected to the side of the mounting plate close to the circular plate.The petroleum conveying pipeline backwashing valve is used for switching and cleaning the working area and the cleaning area of the filter plate, and the water inlet and the water outlet do not need to be closed and opened for multiple times, so that the metal fatigue and the water hammer effect generated in the process of closing and opening the water inlet and the water outlet for multiple times are avoided.