CN2074862U

CN2074862U - Chain fire grate

Info

Publication number: CN2074862U
Application number: CN 90208679
Authority: CN
Inventors: 徐维贵
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-06-18
Filing date: 1990-06-18
Publication date: 1991-04-10

Abstract

The utility model relates to a chain fire grate used for boiler combustion. The composition of the grate is similar to the existing scaled fire grate. The utility model is characterized in that the adoptive fire grate segment is in the shape of step. Both of the front and the back neighboring fire grate segments 9 which are fixed on the chains by chain pins 8 are overlapped successively. The chain fire grate overcomes the defects that the existing scaled fire grate consumes many metallic materials and the existing fire grate segment of the chain fire grate is uneasy replacing. The utility model collects the advantages of the two kinds of the mentioned fire grates to integration and has the advantages of light weight, easy replacing the corrupt fire grate segment, stable and reliable operation, coal inleakage, low fabricating cost, etc. The fire grate provides a king of novel combustion equipment for the coal-fired boiler.

Description

Chain fire grate

The utility model relates to a kind of boiler fired coal traveling-grate stoker, and this fire grate is a kind of traveling-grate stoker of new structure between flake type endless grate fire grate and continuous band fire grate structure.

Chain furnace is the fairly perfect grate furnace of a kind of structure, so far the history in existing over one hundred year.The chain furnace development is so far to today, and the form of its chain fire-gate structure and fire grate segment has multiple.Typical traveling-grate stoker has two kinds of louver stoker and continuous band fire grates, the structure of louver stoker be with the fire grate segment intercalation about between two middle splint, overlap into flakey before and after the adjacent a slice of a slice ground, have little slit to enter the passage of burning zone as air between two.The louver stoker structure has does not leak coal, loading and unloading fire grate conveniently, even can change the fire grate characteristics of damaging under the situation of not blowing out.But it is heavy that overall structure seems, it is many to consume metal material, the manufacturing cost height.The fire grate of continuous band fire grate exactly likes chain link, is in series with round steel between each fire grate, and shortcoming is that coal leakage quantity increases along with fire grate prolongs the wearing and tearing increase running time; Advantage is that this kind fire grate structure is simple, and metal consumption is little, low cost of manufacture more than phosphorus sheet or fire grate.Above-mentioned two kinds of typical traveling-grate stoker structures see " boiler and boiler room equipment " chapter 4 P59～62 page (Tongji University's volume, China Construction Industry Press published in 1979) for details.

The purpose of this utility model is to provide a kind of traveling-grate stoker of new structure, and this fire grate collection louver stoker and each advantage of continuous band fire grate are one, has overcome above-mentioned two kinds of existing problems of existing fire grate simultaneously.

The utility model is formed and design feature will be described below in conjunction with the accompanying drawings:

This traveling-grate stoker comprises that mainly power-driven mechanism 1, chain tensioner 2, driving wheel 12 and wheel shaft 13 thereof, follower 6 and wheel shaft 5 thereof, chain connector 10, traveling-grate stoker 11 and other associate member form.Above-mentioned each component assembly is installed on the furnace grate support 3, and wherein traveling-grate stoker is to be composed in series successively through connector 10 by multi-disc fire grate segment 9 and chain 7.From composition form, this traveling-grate stoker is formed similar with the scale chain grate structure.The utility model characteristics are that said fire grate segment 9 is ladder configuration, adjacent two fire grate segments 9 in front and back overlap successively and are fixedly born by chain pin 8 on the chain 7 of pulling force that the chain of respectively organizing of multiple operation is in series successively by connector 10, forms this traveling-grate stoker.Above-mentioned fire grate 11 is driven operation, and can be set up carrying roller 4 and be bearing in main,

follower

12,6 middle parts by driving wheel 12, fire grate 11 is rolled along carrying roller 4 supportings advance.After fire grate 11 walked to afterbody and changes null over to, fire grate segment 9 borrowed the turn in sequence reversal of the natural order of things of blocks of ground of deadweight to come, and so as to its residual lime-ash of removal, and is cooled off gradually when null.

In the utility model, the connector 10 of chain 7 can adopt Tiebar structure or differential latch structure, and corresponding master,

follower

12,6 can adopt wheel or chain sprocket structure (referring to Fig. 4, Fig. 5) from all directions.When adopting pull bar connector 10 to connect chain 7, chain 7 length are taken turns the length of side with all directions and are equated; When adopting differential pin connector 10 to connect chain 7, the sold inside the country of its differential pin is positioned among head sprocket 12 grooves just.

When adopting broad traveling-grate stoker 11, fire grate segment 9 is divided into several sections along its width, and drives (referring to Fig. 6) with corresponding additional master, the follower that is contained on master, the driven axle 13,5.Each section fire grate has corresponding stairstepping contact-making surface.Above-mentioned fire grate structure helps preventing because of the wide generation torsional deformation of fire grate segment.

Above-mentioned fire grate segment 9 is processed with some air vents 14, to guarantee fire grate 9 each several parts good ventilation effect is arranged all.The air distribution device and the side-sealing device of this traveling-grate stoker 11 are same as the prior art, and this paper repeats no more.

Fig. 1 is the utility model agent structure schematic diagram.

Fig. 2 is that Figure 1A is to structural representation.

Fig. 3 a, b are fire grate and chain assembly structure schematic diagram.

Fig. 4 is all directions driving wheel and corresponding pull bar traveling-grate stoker drive mechanism schematic diagram.

Fig. 5 is chain driving wheel and respective differences untie-sell chain fire grate drive mechanism schematic diagram.

Fig. 6 a, b, c, d, e are different tonnage boiler grate structural representations.

Fig. 7 is the idler structure schematic diagram.

Fig. 8 is differential latch structure schematic diagram.

Fig. 9 is the take-up device structural representation.

The utility model has overcome existing scale chain grate and has consumed the not problem of easily assembling of the many and chain-belt type chain grate furnace screening of metal material, it has concentrated separately advantage of above-mentioned two kinds of traveling-grate stokers, has not leak coal, be convenient to change to damage the fire grate sheet and weight is light, consume the characteristics such as metal material is little, low cost of manufacture. This chain fire-gate burning process is identical with existing traveling-grate stoker burning process.

Claims

1, a kind of traveling-grate stoker, comprise that driving mechanism 1, take-up device 2, driving wheel 12, follower 6, traveling-grate stoker 11 and connector thereof and fire grate associate member form, above-mentioned each component assembly is installed on the furnace grate support 3, wherein traveling-grate stoker 11 is composed in series through connector 10 successively by multi-disc fire grate 9 and chain 7, it is characterized in that said fire grate segment is stairstepping, adjacent two fire grate segments 9 in front and back overlap successively, are fixed on the chain 7 by chain pin 8.

2, traveling-grate stoker according to claim 1 is characterized in that the connector 10 of said chain 7 can adopt Tiebar structure or differential latch structure, and main, follower 12,6 can adopt corresponding all directions wheel or chain sprocket structure.

3, traveling-grate stoker according to claim 1 and 2 is characterized in that said fire grate 9 is divided into several sections, each section fire grate along its width respective steps shape contact-making surface is arranged, and each section fire grate is main by being assemblied in, additional master, follower on the driven axle 13,5 drive.