| 摘要 |
This invention relates to a grate for burning solid combustibles and, more particularly, refuse in a fired furnace. The grate comprises a plurality of steps, each step including a plurality of adjacent grate bars with alternate steps of grate bars being movable relative to an adjacent step of stationary grate bars. Each grate bar includes a substantially horizontal platform terminating in a front lip, a pusher and means for pivotally mounting said pusher beneath the platform at a point near the back of the platform. The pusher includes a faceplate shaped to form an elongated channel with the undersurface of the lip to pass combustion air to said firing chamber. The relative position of the pusher and horizontal platform can be adjusted to vary the size of the air channel in order to adjust the amount of air fed to the firing chamber.
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