CN86205263U

CN86205263U - Opposite direction crisscross push grate

Info

Publication number: CN86205263U
Application number: CN 86205263
Authority: CN
Inventors: 姚圣聪
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-07-16
Filing date: 1986-07-16
Publication date: 1988-06-15

Abstract

The utility model provides an opposite direction crisscross push grate for combustion equipment, which is characterized in that the opposite direction crisscross push grate is provided with grate bars comprising grate sheets of different opening ratio. Besides, the motion of every adjacent fire bars is in opposite direction and is crisscross. The utility model not only can simplify or remove the air chamber apparatus of the traditional zoned-air distribution, but also can accelerate coal combustion, improve coal utilization and reduce environment pollution because of the good poking action due to the crisscross motion of the grate. The opposite direction crisscross push grate can be used with various mechanized industrial boilers, industrial furnaces, life boilers and stoves of manual feeding coal and tapping slag to become novel combustion equipment of environmental protection and energy saving.

Description

Opposite direction crisscross push grate

The utility model belongs to the combustion apparatus field.

Present medium and small boiler uses traveling-grate stoker usually, reciprocal grate, but in the operation process of boiler because high-temp combustion, traveling-grate stoker (especially light-duty continuous band fire grate) is easily broken, reciprocal grate is easily by scaling loss.When this thing happens, must shutdown maintenance.So not only increased the maintenance cost and the running cost of boiler, more seriously owing to maintenance difficult, the time of blowing out is longer, and influence is produced.In addition, the ventilation gaps of above-mentioned two kinds of fire grates is identical on the whole piece fire grate, thus in order to guarantee full combustion of fuel, have in boiler, be provided with the air compartment of tight air zoning, thus increase the complexity of hearth construction and improved the cost of boiler.

The utility model proposes a kind of fire bars that requires setting to be made up of the fire grate segment of different percent openings according to different combustion zones at the shortcoming of above-mentioned fire grate, to improve burning condition, complicated air compartment structure be can simplify or remove especially, thereby boiler cost and operating maintenance expense reduced.

Details are as follows in conjunction with the accompanying drawings for the utility model:

Fig. 1 is the staggered in opposite directions fire grate schematic diagram that promotes;

Fig. 2 is a certain fire bars floor map;

Fig. 3 is the furnace grate support schematic diagram.

By shown in Figure 1, according to customer requirements furnace grate support (2) level or that tilt can be set, bolster (3) in furnace grate support (2) is gone up cylinder or the roller (11) that is complementary by the setting of fire bars radical and each fire bars width, offer ash-falling hole on this cylinder, to avoid an interior dust stratification, guarantee that cylinder can run well for a long time.Above-mentioned cylinder can directly be sleeved on the bolster (3), so when fire bars was walked about, cylinder rolled on bolster, and the resistance of reducing friction.Fire bars length is made up of the fire grate segment of different percent openings with different combustion zones according to furnace depth.Fire grate segment has following four kinds according to different functional requirements and priority program:

1, coal storage district fire grate segment, percent opening are zero;

2, preignition zone fire grate segment has certain percent opening;

3, primary zone fire grate segment, the percent opening maximum;

4, burnt zone fire grate segment has certain percent opening.

In order to reduce the leakage coal, at width certain lap width is arranged at above-mentioned coal storage district's fire grate segment and preignition zone fire grate segment.

But when stove was less, institute's required airflow was little, and the air quantity that is entered in the stove by slit between fire grate enough makes coal combustion, so all the percent opening of fire grate segment all can be designed to zero.

The width of fire bars is generally 50～200 millimeters, and the quantity of fire bars is pressed the grate surface size and decided.Fire bars can be formed by connecting by bolt by the fire grate of different percent openings, also can whole cast.Under the coal storage district fire grate (4) of fire bars a connecting plate (8) is housed, be drilled with connecting hole and hinged on the connecting plate (8) with bolt and pull bar (9) one ends, the other end of pull bar and bent axle (10) are hinged, and bent axle (10) is driven through speed change gear by the peripheral hardware motor.For small-sized handwarmer, also can promote with artificial by the manual operating handle that directly is connected with fire grate.

During fire grate work, motor drives bent axle through deceleration device and slowly rotates also and then drive each fire bars motion.Because the catch bar of each adjacent fire bars is 180 ° with the phase difference that is connected of bent axle, carry out so the motion of each adjacent fire bars is staggered.Promptly when wherein a fire bars travelled forward, the fire bars that is adjacent is motion backward then.Drop to coal on the fire bars front end coal storage fire grate segment from coal bunker (12), through the reciprocal crisscross motion of each fire bars, will be in turn gradually the Yu rotation walk forward, through preheating furnace screening district, main burning grate section, burn-out grate section become cinder at last and fall into pit (13).

Owing to adopted staggered promotion fire grate, the coal continuous and on the adjacent fire bars of the coal when motion on each fire bars contacts, thereby has increased the chance that the coal that has caught fire contacts with the coal that does not catch fire, to igniting with fully burning is highly beneficial of coal.In addition owing to having used the different fire grate segment of percent opening to have four unexistent advantages of traditional fire grate: (1) is lower to the sealing requirements of air zoning air compartment, if the coal that boiler uses stable (most cities can be accomplished), or stove is less, even can remove traditional air zoning air compartment device; (2) the fire grate Maintenance and Repair are convenient, and are not easy scaling loss and break, and save metal material.If the primary zone fire grate segment damages, as long as fire bars is released from the stokehold, the main burning grate sheet that the changing-over lastblock is new, and then fire bars pushed get final product, the workman need not to enter in the stove.This is particularly suitable to the short quick-action furnace of burner hearth; (3) guarantee that there are enough air quantity, sufficient combustion in the primary zone; (4) can eliminate the black smoke of chimney significantly to handwarmer.The utility model can with adapteds such as various Industrial Boilers, boiler for domestic, Industrial Stoves and cooking stove.

Claims

1, a kind of staggered in opposite directions fire grate of forming by fire bars and furnace grate support that promotes, it is characterized by described fire bars (1) vertically is made up of the fire grate segment of different percent openings, it is erected on the bolster (3) of furnace grate support (2), be inclination or horizontally disposed, the transmission mechanism of doing relative crisscross motion is housed on the fire bars.

2, by the described fire grate of claim 1, it is characterized by above-mentioned fire bars by the different coal storage district fire grate segment (4) of percent opening that is provided with according to different combustion zones, give hot-zone fire grate segment (5), primary zone fire grate segment (6), burnt zone fire grate segment (7) is formed.

3,, it is characterized by the cylinder or the roller (11) that length and each fire bars width coupling are housed on the bolster (3) of each furnace grate support (2) and have ash-falling hole by the described fire grate of claim 1.

4, by the described fire grate of claim 1, it is characterized by above-mentioned fire bars is whole cast.