Fire-fighting water tank water level monitoring alarm device for fire fighting

The invention relates to the field of firefighting alarm devices, and discloses a firefighting water tank water level monitoring alarm device for fire fighting, which comprises a water tank used for storing water, a water inlet and a monitoring alarm mechanism used for monitoring the water level. The monitoring alarm mechanism comprises a floating ball, a button alarm, a guide wheel, a balancing weight and a pull rope with the two ends connected with the floating ball and the balancing weight respectively, the floating ball is located in the water tank and floats on the water surface, a connecting rod is arranged between the floating ball and the water tank, and one end of the connecting rod is fixedly connected with the outer side of the floating ball; one end of the connecting rod away from the floating ball is rotationally connected with the inner wall of the water tank; the balancing weight is connected to the outer side of the water tank in a sliding mode, the button alarm is fixedly arranged on the oute