Automatic water-slag separating device

The invention relates to the technical field of separation devices, in particular to an automatic water-slag separation device which comprises a water collection tank, a screening net, a scraper blade and a slag collector. The top of the water collecting tank is open; the separating screen is arranged at the top of the water collecting tank and comprises a screen body and a fence arranged in the circumferential direction of the screen body, the screen body is suitable for separating water from residues, and the fence is provided with a notch suitable for discharging filter residues; the scraping plate is slidably mounted above the screen body, the lower end of the scraping plate is connected with the screen body, the scraping plate is suitable for pushing filter residues separated by the screen body out of the notch, and the scraping plate is connected with a linear driving mechanism suitable for driving the scraping plate to slide; and the residue collector is positioned below the notch and is suitable for r