CN2039385U

CN2039385U - Equal ratio coal-feeding step-type coal-burner

Info

Publication number: CN2039385U
Application number: CN 88208920
Authority: CN
Inventors: 满光军
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-07-19
Filing date: 1988-07-19
Publication date: 1989-06-14

Abstract

The utility model discloses a large tilt angle step-type coal-burner. The angle of the burning surface of a grate and the horizontal surface is about 45 DEG. The burning area of the step-type coal-burner is enlarged over 20%-40% compared with the area of horizontal projecting. The vertical face of fixed grates is in a structure of ventilation groove of palisade and small resistance of ventilation is very low. The motion of movable grates adopts the transmission mechanism of a rocking bar, which makes the burning coal on the grates from above to below. The motion speed is reduced in equal proportion, which conforms the condition of the coal volume reducing orderly and naturally. The thickness of burning coal on the grates is the same. The conditions of ventilation and burning of burning coal are improved. The step-type coal-burner is suitable for various industrial kiln furnaces with burning rooms in the lower part of vertical type of natural wind introducing, the reconstruction and the design for matching of various burning type industrial kiln furnaces with burning rooms in the front part or in the side part.

Description

Equal ratio coal-feeding step-type coal-burner

The combustion apparatus that the defeated coal staged coal burning machine of geometric ratio of the present invention belongs to general boiler and Industrial Stoves designs novel.

The automation coal burning machine of patterns such as general former traveling-grate stoker, reciprocal grate, vibrating-grate stoker and spreader feeder uses in boiler and Industrial Stoves, can be with the advantages such as continuity, uniformity and reliability of its coal-fired process, realize coal-fired automation control, this has been social recognition, but the shortcoming of these combustion apparatus is that the force ventilation resistance is big, and needing increases air blast, air-introduced machine, has not only increased power consumption, the dust concentration of discharging flue gas is improved greatly, must add deduster and handle; On the other hand, also because of its combustion zone is horizontal development, floor space is very big, is unfavorable for that the reasonable Arrangement of Industrial Stoves is used; At present, a lot of Industrial Stoves are not owing to there is suitable mechanization combustion apparatus, and have to use instead electric furnace, gas-fired furnace or oil burner etc., because the change of these Industrial Stoves fuel structures, increased operating cost, construction (or transformation) investment of kiln is doubled and redoubled.

For reducing the flowing resistance of coal burning machine, reduce its floor space, the reasonable burning that can adapt to multiple Industrial Stoves is used.The present invention has designed " geometric ratio is failed coal staged coal burning machine ".This design has kept advantages such as the good continuity of former coal-fired machinery, uniformity, controllability, simultaneously again with defeated coal of its geometric ratio and stepped new structural design, increased the Actual combustion area, reduced flowing resistance, improved the furnace flame temperature, reduced the first investment of kiln,, extensive applicability and good economy have been arranged without mechanical forced ventilation.

The structure of the defeated coal staged coal burning machine of this geometric ratio is shown in accompanying drawing one: its coal bunker (1), coal gate (2), mucking machine (8), ratchet is paid (9), drive sprocket axle (10), back roller bearing (18), burner hearth reflection vault (11), Deng the conventional components that is general coal burning machine, its original creation part is by moving grate (12), fixed grate (13), fire grate carriage (14), slideway (15), frame (16), slag plate (17) falls, the staged fire grate of the fire grate shape similar " airstair " that the ventilation slot of fixed grate (21) is formed and promote this staged fire grate realize the defeated coal motion of geometric ratio by decelerator (4), eccentric wheel (5), the action of the eccentric rocking bar geometric ratio coal conveyor structure of rocking bar group compositions such as (7) and realizing.

Require to install the fixed grate (13) of several layers of " ┐ " type in the middle of the frame (16) of the defeated coal staged coal burning machine of this geometric ratio according to the type of furnace, fixed grate (13) as shown in Figure 2, its vertical plane (20) is designed to paliform, and has a small inclination angle backward.Between each layer fixed grate (13), row's movable furnace grate plate (12) is all arranged, every row's movable furnace grate plate (12) trailer card is on a fire grate carriage (14).The time spent is done in the reciprocating sliding that is subjected to connection rod set (7) when fire grate carriage (14), drive movable furnace grate plate (12) go up at the slideway (15) of frame (16) both sides and fixed grate (13) reciprocating, the promotion fire coal continuously clocklike from top to down fall step by step and stir.The reciprocating motion of connection rod set (7) is to rely on cycloidal-pin wheel decelerator (4) to realize by the motion that eccentric wheel (5) drives vertical rocking bar (6).

During use, the operator need only add coal coal bunker (1), and coal-pushing plate (3) can back and forth push the combustion chamber with coal continuously under machinery drives.The motion of bunker coal is driven by same rocking bar (6) in coal and the burner hearth, realizes being synchronized with the movement of stroke equal proportion minimizing from top to bottom.

The movable furnace grate plate (12) of the defeated coal staged coal burning machine of geometric ratio, fixed grate easily worn parts such as (13) all is that snap fit connects, be convenient to dismounting and change, be used for the long-term Industrial Stoves that do not stop burning, can under the condition of not stopping burning, change each easily and decide fire grate (13) and movable furnace grate plate (12).Each fire grate at upper and lower to all leaving certain activity, in case fire grate distortion or because of embedding the stuck shutdown of cinder between the fire grate.

The adjusting of coal amount is controlled by the lifting of the coal gate (2) at coal bunker (1) rear portion.The adjusting of movable furnace grate plate (12) movement velocity is realized by the speed adjusting gear of decelerator (4).Overload protection is guaranteed by the overload clutch of decelerator (4).

Mucking machine (8) is the transport tape of a chain, is installed on the roller bearing (10) and (18) that has sprocket wheel, and the drive sprocket axle (10) of mucking machine (8) is the axle over against rocking bar (6), pays (9) by ratchet and drives mucking machine (8) motion.

Frame (16) adopts Welding Structure, positions such as both sides to be embedded with the iron plate sealing of asbestos insulation material, after fuel enters burner hearth, is ignited by reflection vault (11) radiant heat of ignition zone.

The design angle at the inclination angle of this staged fire grate structure approaches about about 45 degree of natural drift angle of steam coal, can utilize less floor space to arrange bigger fire grate burning area, make the ratio of fire grate length and its floor projection length be about 5:2, no matter be used for vertical industrial kiln or horizontal industrial kiln, for improving kiln temperature, reduce construction area, reduce cost and all have the incomparable premium properties of other existing combustion machines with the enhancing applicability.

The reciprocal horizontal movement of this stove movable furnace grate plate (12) is promoted by rocking bar (6), the stroke equal proportion of each layer fire grate reduces from top to bottom, be complementary with the fire coal minimizing gradually of volume from top to bottom, guaranteed that the coal-fired thickness on each layer fire grate is basic identical, the resistance of each layer fire grate is constant substantially, help evenly burning and furnace gas and rationally distribute, overcome a large amount of air leakage phenomena of former fire grate afterbody.

The horizontal plane (19) of this stove fixed grate (13) is designed to the plane, is used for the coal-fired and movable furnace grate plate (12) of support; Vertical plane (20) is designed to paliform ventilation slot (21) structure, can increase draught area to greatest extent, reduces flowing resistance.As shown in Figure 2.Like this can be in order to avoid use mechanical forced ventilation, favourable economize on electricity; Reduce the furnace gas flow velocity simultaneously, impel the abundant burning of fugitive constituent in the fuel, help the saving of fuel, reduce oke exhaust blackness and dust concentration.

The defeated coal staged coal burning machine of this geometric ratio is applicable to the supporting of lower combustion chamber's vertical industrial kiln and the reflective horizontal industrial kiln of flame; Be applicable to that extended furnace, side put transformation and some lower combustion chamber's vertical industrial kiln transformation of combustion chamber Industrial Stoves, can only change stove, do not change kiln, can reduce improvement expenses at double.Use traveling-grate stoker or reciprocal grate transformation as certain unit steel rolling baker, need to rebuild stove, invest about 400,000 yuan, floor space need increase by 60%; Adopt the present invention to transform, only change stove, do not change kiln, need not to increase air blast, air-introduced machine and deduster, floor space only increases by 5%, only needs 40,000 yuan of investments can reach same transformation purpose.

Claims

1, by decelerator (4), eccentric wheel (5), rocking bar (6), coal-pushing plate (3), defeated coal interlinked mechanism of the geometric ratio that connection rod set parts such as (7) constitute and fire grate carriage (14), moving grate (12), fixed grate (13), frame (14), the defeated coal staged coal burning machine of the geometric ratio that the staged fire grate that slideway parts such as (15) constitute combines, it is characterized in that for clamping and support moving grate (12), the plane and the body of heater foundation level face of the frame (16) of fixed grate (13) are an inclination angle, and the moving grate (12) that is moved reciprocatingly by connection rod set (7) drive on the last plane of fixed grate (13) is installed on fire grate carriage (14) connection rod set (7) last and the defeated coal interlinked mechanism of geometric ratio and is connected.

2, the defeated coal staged coal burning machine of the described geometric ratio of claim 1 is characterized in that the design angle at the inclination angle of staged fire grate structure approaches about about 45 degree of natural drift angle of steam coal.

3, the defeated coal formula coal burning machine of geometric ratio as claimed in claim 1, the section that it is characterized in that fixed grate (13) is " ┐ ", plane is the flat board (19) of an energy support fire coal on it, the angle of its vertical plane (20) and dull and stereotyped (19) is less than 90 °, and vertical plane (20) sets the ventilation slot (21) that grid block type.