Sewer anti-blocking device for constructional engineering

The sewer anti-blocking device for constructional engineering comprises a sewer channel, a cleaning assembly is installed in a temporary storage cavity, a zigzag filter plate is erected between two openings, an impurity removal assembly is installed in the zigzag filter plate, and an automatic lifting assembly is arranged at the bottom of the zigzag filter plate; the impurity removal assembly comprises a scraping plate, a connecting block and a connecting rod, a plurality of filtering through grooves are formed in the zigzag filter plate, the connecting block is installed in the filtering through grooves, and the tail end of the connecting rod is connected with the automatic lifting assembly. The sewer anti-blocking device for constructional engineering is provided with the zigzag filter plate and the scraper plate, the zigzag filter plate further filters sundries entering the sewer channel, most of the sundries stay on the zigzag filter plate, the scraper plate is driven by the automatic lifting assembly to