Precise solid-liquid separator with self-cleaning function

The precise solid-liquid separator with the self-cleaning function comprises a solid-liquid separator body, a spiral screen filtering device and supporting legs, the supporting legs are fixedly connected to the bottom of the solid-liquid separator body, the spiral screen filtering device is fixedly connected to the top of the solid-liquid separator body, a filter screen is arranged in the solid-liquid separator body, and the spiral screen filtering device is fixedly connected to the bottom of the solid-liquid separator body. A liquid cavity is formed below the filter screen, a spiral screen is arranged in the spiral screen filtering device, an ultrasonic generator is arranged at the left end of the solid-liquid separator, and an ultrasonic detection device and an ultrasonic cleaning device are arranged on the ultrasonic generator; the ultrasonic detection device is used for detecting whether the spiral screen and the filter screen are blocked or not, the ultrasonic cleaning device is used for conducting ultra