Flushing device for flushing pipe body of concrete pump truck

The invention discloses a flushing device used for flushing a concrete pump truck pipe body, and relates to the technical field of pump truck pipe body cleaning, the flushing device comprises a conveying pipe, a cleaning mechanism is slidably arranged in the conveying pipe in the vertical direction, and a conveying mechanism used for driving the cleaning mechanism to move along the interior of the conveying pipe is arranged at the top of the conveying pipe; the cleaning mechanism comprises a fixing seat, a sleeve, a connecting seat, a water guide pipe, a plurality of spray heads and a cleaning assembly used for cleaning the inner wall of the conveying pipe, the cleaning assembly is matched with the spray heads, all arc-shaped L-shaped seats can be pushed out, and a cleaning scraping blade scrapes concrete on the inner wall of the conveying pipe along with upward movement of the fixing seat; the cleaning effect on the inner wall of the conveying pipe is improved, a large gap between every two adjacent arc-shap