Screen damage monitoring and alarming system and well drilling vibrating screen

The invention discloses a screen damage monitoring and alarming system, and belongs to the technical field of petroleum drilling equipment, the screen damage monitoring and alarming system comprises a liquid collecting box, a valve arranged at the bottom of the liquid collecting box, a monitoring device arranged in the liquid collecting box, an alarming device and a controller, and the monitoring device monitors the change of the liquid level in the liquid collecting box to determine screen damage. Therefore, an alarm is given through the alarm device, and opening and closing of the valve are controlled through the controller. The invention further discloses a well drilling vibrating screen which adopts the screen damage monitoring and alarming system. According to the screen damage monitoring and alarming system, screen damage can be monitored within a short time after the screen is damaged, the real-time performance is good, the cleanliness of drilling fluid is well guaranteed, and meanwhile the screen dama