Single-roller layered coal hopper

Abstract

The invention discloses a single-roller layered coal hopper which comprises a coal hopper shell (1). A feed inlet (2) is arranged at the upper part of the coal hopper shell (1). A screening device (3) and a discharge port are arranged at the lower part of the coal hopper shell (1). The single-roller layered coal hopper is characterized in that a coal pull-out roller (5) is arranged in the coal hopper shell (1) below the feed inlet (2); a plurality of coal pull-out strips (6) which are uniformly distributed are arranged along the axial direction of the coal pull-out roller (5); an arc plate (7) of which one end is connected with the coal hopper shell (1) is arranged below the coal pull-out roller (5); in the pull-out direction of the coal pull-out roller (5), a coal pull-out outlet (8) is formed between the arc plate (7) and the coal hopper shell (1); and the coal pull-out outlet (8) is positioned above the screening device (3). The invention provides the single-roller layered coal hopper which has simple structure and ingenious design and can be used for ensuring the fuel coal layering effect, improving the thermal efficiency of a boiler and fundamentally avoiding the phenomenon of coal caking.

Description

technical field [0001] The invention relates to a coal scuttle, in particular to a single-stick layered coal scuttle. Background technique [0002] At present, most of the forward-rotating chain coal-fired boilers use layered coal feeding devices (that is, coal hoppers). After using this equipment, the coal can be loosened, and the thermal efficiency can be improved by improving the combustion conditions, so that users can obtain certain benefits. Economic benefits, but the traditional coal scuttle has a double-roller-to-roller structure, and there are still some problems in the actual use process: First, after the coal enters the coal scuttle, it will flow down from the top of the coal-pushing roller due to its own weight, so It will cause the thickness of the coal seam on the grate to be uneven. If the coal is wet or has large pieces, it will be difficult for the coal roller to remove the coal effectively, thus losing the meaning of layered combustion; secondly, the coal s...

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