Stepping boiler for layered heating

The utility model relates to a stepping boiler for layered heating and belongs to the technical field of boilers. The stepping boiler comprises an insulated water tank, a water inlet, a water outlet, a separator plate, a lower liquid level switch, a water level limit switch, a heater, a temperature display and a control mainboard, wherein the lower liquid level switch, the water level limit switch, the heater and the temperature display are respectively connected with the control mainboard, the separator plate is on the lower portion of the insulated water tank, the water inlet and the heater are respectively arranged at two bottom sides of the insulated water tank, the water inlet communicates with the insulated water tank under the separator plate, the lower liquid level switch is positioned above the separator plate to prevent dry burning, the water outlet is arranged in the insulated water tank at the side opposite to the lower liquid level switch and communicates with the insulated water tank, and the water level limit switch is arranged on the upper portion of the insulated water tank to prevent excessive water. The stepping boiler employs layered heating manner, allows rapid water outlet, prevents long-time waiting due to heating large water volume and reduces hot and cold mixed water.