CN202955679U

CN202955679U - Frying-pan type hearth

Info

Publication number: CN202955679U
Application number: CN 201220650920
Authority: CN
Inventors: 王立科
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-21
Filing date: 2012-11-21
Publication date: 2013-05-29
Anticipated expiration: 2022-11-21

Abstract

The utility model relates to a frying-pan type hearth, which belongs to the technical field of designing and manufacturing of industrial boiler hearths. The center of an annular base is provided with a pan-shaped grate which is provided with vent holes; one side of the annular base is provided with a spiral shaft of a coal conveyor; and an air blower is provided with an air inlet pipe. When in use, the frying-pan type hearth is arranged in a boiler furnace to replace a traditional plane strip-shaped hearth. When the frying-pan type hearth is in use, fuel coal is conveyed to a coal feeding port of the pan-shaped grate by the spiral shaft of the coal conveyor. During the combustion of the coal, oxygen is supplied by the air blower and blown upwards from the bottom of the pan-shaped grate through the branched air inlet pipe to support combustion. After the coal combusts completely to ash, the coal ash drops through the vent holes. Because the diameters of the single vent holes in the pan-shaped grate are small, and the gaps among the vent holes are far smaller than those among vent holes in a traditional grate, the fuel coal cannot drop, a large amount of coal can be saved, and the production cost of enterprises can be reduced. The frying-pan type hearth provided by the utility model is simple in structure and reasonable in design, and experiments show that the frying-pan type hearth has a very ideal effect.

Description

Frying pan formula furnace bottom

Technical field

The utility model belongs to design and the manufacturing technology field of Industrial Boiler furnace bottom.

Background technology

The boiler used at some production units at present, its furnace bottom is all planar structure, fire bars is arranged side by side.Between fire bars, space is larger.So just the use for bunker coal has just had significant limitation.Need adopt fast coal or piece face to mix to use.As the large percentage of face coal, will miss because the fire bars gap is large, wasted coal fuel, strengthened the production cost of enterprise.

Summary of the invention

For above-mentioned situation, at the bottom of the purpose of this utility model is to provide a kind of frying pan formula Boiler Furnace, solve the problem existed at the bottom of existing Boiler Furnace.

The utility model is to address the above problem taked technical scheme to be: at the central part of annular base with pot shape fire grate, on pot shape fire grate with passage.Central part at pot shape fire grate has a coal-hatch.Pot shape fire grate is welded by six or eight curved surface pieces.In annular base one side with the coal conveyor helical axis.At the opposite side air blast of annular base, on air blast with blast pipe.On the front end of blast pipe with branch's blast pipe.Branch's blast pipe be distributed on pot shape fire grate below.Use of the present utility model is that it is arranged in boiler furnace, in order to replace traditional plane stripe shape furnace bottom.By the coal conveyor helical axis, bunker coal is transported to pot coal-hatch of shape fire grate during use, along with bunker coal is constantly sent here, bunker coal rises gradually under the pushing tow of helical axis, be evenly distributed in pot shape fire grate above.During burning, the upwards winding-up of below from pot shape fire grate via branch's blast pipe by the air blast oxygen supply, play combustion-supporting effect.Treat that the bunker coal after-flame becomes ash, falls through passage.Passage aperture on pot shape fire grate is less, because be the single hole setting, its gap contrasts traditional strip fire grate and is much smaller again, therefore can not make bunker coal fall, and can save a large amount of fire coals.Reduced enterprise's production cost.The utility model is simple in structure, reasonable in design, our experiments show that effect is very good.

The accompanying drawing explanation

Accompanying drawing is the utility model structural representation.

The 1-annular base; 2-coal conveyor helical axis; The 3-blast pipe; The 4-air blast; 5-branch blast pipe; The 6-coal-hatch; The 7-passage; 8-pot shape fire grate.

The specific embodiment

Structure of the present utility model is as shown in drawings: at the central part of annular base 1 with pot shape fire grate 8, on pot shape fire grate with passage 7.Central part at pot shape fire grate has a coal-hatch 6.Pot shape fire grate is welded by six or eight curved surface pieces.In annular base one side with coal conveyor helical axis 2.At the opposite side air blast 4 of annular base, on air blast with blast pipe 3.On the front end of blast pipe with branch's blast pipe 5.Branch's blast pipe be distributed on pot shape fire grate below.

Claims

1. frying pan formula furnace bottom, it is characterized in that: at the central part of annular base (1) with pot shape fire grate (8), on pot shape fire grate with passage (7), central part at pot shape fire grate has a coal-hatch (6), in annular base one side with coal conveyor helical axis (2), at the opposite side air blast (4) of annular base, on air blast with blast pipe (3), on the front end of blast pipe with branch's blast pipe (5).