| 摘要 |
Provided is a coal and solid fuel combustion boiler having a step grate stoker, wherein the coal and solid fuel combustion boiler comprises a housing, a combustion chamber, grates, the stoker, and a controller. A plurality of fixed members and moving members between the grates positioned to be stepped on the bottom of the combustion chamber in the housing allowing coal input from coal transferring part to be loaded thereon are fixed to be arranged to be stepped on a combustion chamber frame. The stoker, which is properly installed in the inner space of the housing, quickly transfers ashes loaded on the grates when only the moving members of the arranged members alternately protrude forwards. The housing has a structure in which water filling the combustion chamber frame connected to a water tank on the upper side of the body of the housing by a water pipe exchanges heat with combustion gas and the combustion gas smoothly flows. The controller displays the sensing values of the pressure or temperature in the combustion chamber to the outside through a display using values or graphs, or displays the sensing values by flickering warning lights, and generally controls the electric and the electronic functions of the boiler, wherein the sensing values sensed by a sensor are transmitted to the controller. According to the present invention, the structure of the grates positioned in the boiler have stokers having a fixed member and moving members, wherein the moving members moved forwards and backwards suitable for an operational condition, prevents the generation of clinkers (generated when fuel is matted into masses during combustion) beforehand, quickly transfers the ashes loaded on the grates, and smoothly disposes the ashes, such that large amounts of coal not mixed with the ashes can be distributed in the space of the combustion chamber and the combustion processes can proceed by stages, thereby largely improving the combustion efficiency of the coal in the boiler. |
