CN2418364Y

CN2418364Y - Coal-distribution device for chain boiler

Info

Publication number: CN2418364Y
Application number: CN 00208942
Authority: CN
Inventors: 赵蓉正
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-11
Filing date: 2000-04-11
Publication date: 2001-02-07
Anticipated expiration: 2010-04-11

Abstract

The utility model relates to a coal-distribution device for a chain boiler. A wall plate of a coal hopper near the lower edge of a coal hopper is provided with at least one coal distributing slat which can also be used as a seal. The utility model can improve the layered effect of a coal bed arranged on a fire grate, heat efficiency of boiler combustion can be improved, longtime normal operation of equipment can be ensured, and the structure of the utility model is simple.

Description

A kind of chain-grate boiler cloth device for coal

The utility model relates to the improvement of boiler plant, especially a kind of chain-grate boiler cloth device for coal.

People are utilizing traveling-grate stoker formula boiler widely at present, and traditional coal-feeding mode is that fire coal enters burner hearth through coal bunker, gate, fire grate successively from coal bunker.The shortcoming of this coal-feeding mode is inhomogeneous to coal particle size, has both influenced the thermal efficiency of boiler, easy again scaling loss equipment.In order to address this problem, people develop coal supply equipment, its basic structure is that the coal outlet of coal bunker is equipped with the flashboard of control coal-supplying amount and the cage cylinder of rotation, between it and the fire grate layering screen is housed, be intended to realize on the fire grate coal supply grate firing coal particle size from bottom to top, according to big to little orderly arrangement.Under normal operation, they all can obtain better technical effect.But because coal bunker and cylinder are in respectively quiet, moving two states, between them, the gap certainly will to be left, effect between all grizzly bars of cylinder in addition, so just constitute that the common weak point of coal supply equipment is in the known technology: the fire coal of coal bunker especially conny can be scattered, and fall on the fire grate through cylinder the place ahead, greatly reduce the operating efficiency of layering screen, still to destroying the planarization of giving the coal seam, make mechanical imperfect combustion increase, reduce boiler efficiency; The conny accumulation of being scattered can influence the normal operation of equipment.

Task of the present utility model is that a kind of improved chain-grate boiler cloth device for coal will be provided, and it can improve effectively to the coal seam layered effect, with the thermal efficiency of raising boiler, and the long-term normal operation of support equipment.

Task of the present utility model is achieved in that the wallboard of coal bunker is equipped with the cloth coal lath of at least one double as sealing near lower limb.

Cloth coal lath can be that the wallboard cantilever of coal bunker is connecting straight cloth coal lath.

Cloth coal lath also can be the wallboard of coal bunker, by press strip and screw pair software cloth coal lath is installed.

Cloth coal lath can also be the wallboard of coal bunker, is fixed with the circular arc cloth coal lath that the cross section is wing formula.

Advantage of the present utility model: can improve the layered effect of giving the coal seam on the fire grate, to improve the thermal efficiency of boiler combustion; Can normally move for a long time by support equipment; Simple in structure, be easy to apply.

The concrete structure of utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the sectional view of a kind of chain-grate boiler cloth device for coal (fire grate is represented in first embodiment and double dot dash line);

Fig. 2 is that the side of second embodiment of this device is analysed and observe local figure.

Below in conjunction with details and the working condition of Fig. 1～2 detailed descriptions according to the concrete device that the utility model proposes.

This device comprises that the wallboard of coal bunker is equipped with the cloth coal lath of at least one double as sealing near lower limb.Concrete technical application scheme has a plurality of, now just has being described as follows of typicalness.

Embodiment 1 (see figure 1), the coal bunker 5 of steel material, its coal outlet are equipped with driving mechanism 9 and are driving the control flashboard 8 that can move up and down with the control coal-supplying amount.The cylinder 1 according to the direction rotation of arrow 10 expressions is equipped with in the coal outlet below of coal bunker, along the grizzly bar 3 that is fixed with equal length on its excircle direction.Between this cylinder 1 and the fire grate installed in the below layering screen 11 is housed.The straight cloth coal lath 7 of a double as sealing is housed near lower limb at the wallboard 6 of coal bunker.Its limit is connecting wallboard with the cantilever connected mode, and floats on the grizzly bar of cylinder in another corresponding limit; With regard to its length, can be the integral body of a total length, also can be the segmented body of a total length.Also be shaped on manhole 4 on the coal supply device housings, and with screw manhole cover 2 be installed and carried out shutoff.

Working condition is to regulate the control flashboard, starts cylinder, and the fire coal layering screen of throwing to is carried out layering and handles, and forms on fire grate to coal seam supply boiler.Cloth coal lath is hiding and is being easy to generate the coal-fired gap of being scattered between coal bunker and the cylinder, because its existence has ensured not only coal cinder, particularly conny all can both be thrown to layering screen from cylinder, makes the coal-fired orderly layering cloth coal that carries out on the whole width of fire grate, realize both cloth coals, again sealing.The work shutdown that finishes.

Embodiment 2 (see figure 2)s, its structure is substantially the same manner as Example 1, and difference only is to cancel straight cloth coal lath 7, but adopts by press strip 13 and the secondary software cloth coal lath 12 with elasticity (as rubber) of installing of screw.

Embodiment 3, and its structure and embodiment 1 are also basic identical, and difference only is to cancel straight cloth coal lath 7, are fixed with the circular arc cloth coal lath that the cross section is (list) wing formula but adopt in same position.

Embodiment 4 (all not shown among embodiment 3,4 figure) is about to embodiment 1 and 2 and organically combines enforcement simultaneously, is intended to the forced working function.

Claims

1. chain-grate boiler cloth device for coal is equipped with the coal amount control flashboard (8) that driving mechanism (9) is driven by the coal outlet of coal bunker (5); The cylinder that is shaped on grizzly bar (3) (1) according to the direction rotation of arrow (10) expression is equipped with in the coal outlet below of coal bunker (5); Layering screen (11) etc. is housed between this cylinder (1) and the fire grate forms, it is characterized in that the wallboard (6) of coal bunker (5) is equipped with the cloth coal lath of at least one double as sealing near lower limb.

2. cloth device for coal as claimed in claim 1 is characterized in that cloth coal lath can be that wallboard (6) cantilever of coal bunker is connecting straight cloth coal lath (7).

3. cloth device for coal as claimed in claim 1 is characterized in that cloth coal lath also can be the wallboard (6) of coal bunker, is equipped with software cloth coal lath (12) by press strip (13) and screw pair.

4. cloth device for coal as claimed in claim 1 is characterized in that cloth coal lath can also be the wallboard of coal bunker, is fixed with the circular arc cloth coal lath that the cross section is wing formula.