CN2254993Y

CN2254993Y - Walking type laminated combustion apparatus with automatic rotation slag obstruction means

Info

Publication number: CN2254993Y
Application number: CN 96207743
Authority: CN
Inventors: 龙潮; 刘新池; 张务勋
Original assignee: BEIJING BOILER RESEARCH INST
Current assignee: BEIJING BOILER RESEARCH INST
Priority date: 1996-04-10
Filing date: 1996-04-10
Publication date: 1997-05-28
Anticipated expiration: 2006-04-10

Abstract

The utility model discloses a walking type laminated combustion apparatus with automatic rotating slag bridge. The automatic rotating slag bridge is installed between the rear part of a fire grate and a back water-cooled wall. A slag block on the lower part of the slag bridge is connected with a connecting plate on the upper part of the slag bridge by a hinge, and the upper part is fixed on the transverse beam of a steel frame. When coal beds are piled on the fire grate and exceed to the prescribed thickness, the slag block is jacked up; when the coal beds equalize, the slag block is recovery by dead weight. Thus, the utility model ensures the coal beds to be pre and post equalization and it enables run of furnace to stably operate, fuel to sufficiently burnt out, every heat dissipation to cut down and heat efficiency of the boiler to enhance. In addition, the utility model brings about obvious effect on saving energy and environmental protection.

Description

The travelling grate furnace burner of automatic rotation shelves slag device is housed

The utility model relates to a kind of grate furnace burner, particularly relates to a kind of travelling grate furnace burner that automatic rotation mop is housed.

Travelling grate grate furnace burns device, it is the combustion apparatus of the very wide maturation of a kind of application, enter burner hearth from adding the coal that coal bunker falls with the fire grate of advancing, by catching fire, burning, after-flame, forming lime-ash at last and discharge out of the furnace, the height of its efficiency of combustion depends on multiple factor, except design correct stove baking form according to coal, choose the fire grate gait of march, prepare outside the air quantity of different combustion phases, uniform coal seam thickness on correct levelling and the maintenance fire grate, abundant after-flame for fuel, reduce every heat loss, it is most important to improve efficiency of combustion.

Traditional shelves slag device, common name eagle iron supports the afterbody that is installed on the chain direct of travel by the hawk retort stand, and purpose is to pile up part ash, prevents that the back of furnace row grieshoch is thin excessively, burns out the grate surface, secondly lime-ash can be caused ash dropping hopper.Its shortcoming is, piles after grey position leans on very much, can't play coal is acted on uniformly in the fire grate rear coal seam thickness of going forward, and the rotation of fire grate is played inhibition, and fire grate is come off, and ash temperature is still high herein, and fire grate is often burnt out.

Problem at above-mentioned existence, be to provide a kind of like this travelling grate furnace burner that automatic rotation mop is housed order of the present utility model, mop in the device can be regulated the thickness in coal seam on the fire grate automatically, thereby has improved combustion conditions, has improved the thermal efficiency of boiler.

For achieving the above object; the utility model has been taked following technical measures; between the tipping tube of back of furnace row and water-cooling wall bottom, back, a kind of mop that can rotate automatically is installed; this mop bottom is the pushing off the slag piece; top is connecting plate; both connect with hinge; the top of mop is fixed on the crossbeam of steelframe; it is in service when the coal seam surpasses specific thickness; just pushing off the slag piece jack-up is rotated, the balanced backstop clinker of thickness restores automatically, and coal seam thickness is remained in the prescribed limit; for the abundant after-flame of coal provides condition, also protected the grate surface not burnt out.Major advantage of the present utility model is:

1, mop is simple in structure, reliable, restores by the rotation and the deadweight of pushing off the slag piece, can align the coal seam thickness on the fire grate

2, also very convenient for changing old-fashioned eagle iron, only mop is fixed on the crossbeam of steelframe and gets final product.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the structural representation of prior art burner;

Fig. 2 is the structural representation of the utility model burner;

Fig. 3 is solid outline drawing for arc pushing off the slag piece 4 cross sections among Fig. 2;

Fig. 4 is hollow outline drawing for rectangle pushing off the slag piece 4 cross sections among Fig. 2;

Fig. 5 is hollow and solid assembly outline drawing for rectangle pushing off the slag piece 4 cross sections among Fig. 2.

Shown in Fig. 1-5, the bottom is a travelling fire grate 1, top is followed successively by from front to back and adds coal bunker 12, preceding water-cooling wall 11, burner hearth 10, back water-cooling wall 9, back water-cooling wall 9 extends to the tipping tube 3 of bottom, eagle iron 2 is installed on the afterbody of fire grate 1, mop 5 is installed between the upper back and tipping tube of fire grate, and described mop 5 comprises the pushing off the slag piece 4 of bottom, the connecting plate 7 on top, both connect with hinge 6, mop 5 is fixed on the crossbeam 8, and described crossbeam 8 both can be supported on the support of grate both sides, also can cross the both sides furnace wall and prop up in the boiler outside, also can adopt suspension type, or on the ground by grate rear portion ash bucket support is set.The profile of pushing off the slag piece 4 is generally arc, but also can be rectangle, curved surface rectangle, square, garden shape or ellipse garden shape; It is made material and is generally heat-resistant antifriction foundry goods, forging, it also can be the steel alloy pipe fitting, structural member etc., the cross section can be solid, at least arrange more than two along the fire grate width, also can be that hollow or hollow and solid assembly is arranged one along fire grate width H, so that the water flowing cooling can be loosened again and even coal seam when high temperature, piece number 13 be the limbers.The direct of travel of fire grate 1 is pressed shown in the arrow K, and pushing off the slag piece 4 rotates by direction shown in the arrow A when coal piling, and during installation, the top of the bottom of pushing off the slag piece 4 and fire grate 1 distance is usually in the 20-200mm scope.

The utility model has improved boiler efficiency for kiln run stable operation provides advantage, for energy-saving and environmental protection bring obvious effects.

Claims

1, a kind of travelling grate furnace burner with automatic rotation mop, main travelling fire grate (1) by the bottom, the anterior coal bunker (12) that adds, preceding water-cooling wall (11), the burner hearth (10) at middle part and the back water-cooling wall (9) at rear portion are formed, it is characterized in that: the upper back of fire grate (1) and back water-cooling wall (9) extend between the tipping tube (3) of bottom mop (5) are housed, the mop that send (5) comprise the pushing off the slag piece (4) of bottom, the connecting plate on top (7), both connect by hinge (6), and the top of mop (5) is fixed on the crossbeam (8).

2, burner as claimed in claim 1 is characterized in that: the profile of pushing off the slag piece (4) is any one in arc, rectangle, curved surface rectangle, square, figure or the ellipse garden shape.

3, such as claim 1 or 2 the burner of company, it is characterized in that: the cross section of pushing off the slag piece (4) is any one in solid, hollow body or the solid and hollow assembly.