CN206648041U - A kind of fire grate device suitable for small refuse incinerator - Google Patents

Abstract

The utility model discloses a kind of fire grate device suitable for small refuse incinerator, including multiple furnace rollers and the drive system of driving furnace roller axial rotation on body of heater；Gap is provided between two adjacent furnace rollers；Furnace roller one end is connected after stretching out body of heater with drive system；Body of heater lateral wall at the furnace roller other end is provided with gas skirt；Gas skirt surrounds collection chamber with body of heater lateral wall；Air flue is provided with furnace roller, and multiple stomatas connected with the air flue are offered on furnace roller；The entrance of the air flue is arranged on the furnace roller on one end of the gas skirt, and the air flue connects with the collection chamber；The gas skirt is provided with the air inlet pipe connected with the collection chamber.The utility model is advantageous to the unburned debris of large volume and hardened lime-ash discharges burner hearth together, and burner hearth cleaning is periodically into without operating personnel, so as to lift incinerator to the rubbish adaptability that does not sort, reduces the labor intensity and work risk of operating personnel.

Description

A kind of fire grate device suitable for small refuse incinerator

Technical field

Consumer waste innocent, minimizing disposal field are the utility model is related to, more particularly to it is a kind of suitable for small-sized The fire grate device of domestic waste incineration.

Background technology

The innoxious of house refuse, minimizing disposal have highly important environment protection significance.Burning is disposal house refuse One of effective means, especially resident's population size such as small towns, village less, after Domestic Waste Collection fortune centrally disposes difficulty Place, carrying out cleaning burning using small refuse incinerator has advantage.

Because the composition of house refuse is extremely complex, before house refuse is carried out into burning disposal using large-scale incinerator, Generally require and rubbish pre-processed, including will in rubbish burn when easily cause the component seriously polluted, can not burn and Do not have to environment the component of harm, component etc. that the component of incinerator may be damaged, have other utilization to be worth sorted or Sort out, and by volume it is larger, be unfavorable for burn component carry out it is broken etc..But produce rubbish daily for small towns, village etc. Few situation is measured, it is unpractical to build special rubbish pretreatment center, is wrapped in addition in these local house refuses The non-flammable component such as the glass condiment bottle that contains, milk pot, useless brick, stone, waste water clod, useless pottery piece, honeycomb cinder is more, Composition is more complicated.

Because small towns, village domestic garbage constituent are complicated, many relatively stubborn problems are brought to burning, One of them is exactly that the non-combustible composition that volume is larger in rubbish is easily stuck on fire grate, it is not easy to is discharged from burner hearth, and ashes Together burner hearth accumulate, it is hardened, cause incinerator to block.After a period of time, it is necessary to by be trapped in burner hearth lime-ash and Other foreign matters are cleared up.And the general area of manhole for entering burner hearth is little, the furnace operation environment after use is very in addition Badly, the health of the job very difficult of clearing furnace and influence operating personnel.Therefore, develop and burnt suitable for small-sized rubbish Burn stove and be capable of easy deslagging fire grate system it is significant.

The content of the invention

Technical problem to be solved in the utility model is, in view of the shortcomings of the prior art, providing one kind is applied to small-sized rubbish The fire grate device of rubbish incinerator.

In order to solve the above technical problems, technical scheme is used by the utility model：One kind is burnt suitable for small-sized rubbish The fire grate device of stove, including multiple furnace rollers and the drive system of the driving furnace roller axial rotation on body of heater are burnt, and The multiple furnace roller is placed in burner hearth；Gap is provided between two adjacent furnace rollers；The body of heater is stretched out in described furnace roller one end It is connected afterwards with the drive system；Body of heater lateral wall at the furnace roller other end is provided with gas skirt；The gas skirt and institute State body of heater lateral wall and surround collection chamber；Air flue is provided with the furnace roller, and the multiple and air flue is offered on the furnace roller and is connected Logical stomata；The entrance of the air flue is arranged on the furnace roller on one end of the gas skirt, and the air flue with it is described Collection chamber connects；The gas skirt is provided with the air inlet pipe connected with the collection chamber.

The furnace roller includes mandrel and gear ash set；The mandrel is connected with gear ash set by polylith floor；The air flue edge The mandrel is axially arranged, and the stomata is opened on the mandrel；The mandrel both ends form two beyond the gear ash set Construction section；One of construction section sequentially passes through sidewall of the furnace body, is connected after the axle bed on body of heater with the drive system； Another construction section connects with the collection chamber.

The gear ash set cross section is semicircular arc；When incinerator is in burning state, the gear ash set is in mandrel Lower section, and convex surface is down, and the air vent openings on the mandrel are upward；Or when incinerator is in burning state, the gear Ash set convex surface upward, concave surface down, the lower section for the gear ash set that mandrel is in, the opening upwards of the stomata on the mandrel.

The gear ash set cross section includes a horizontal component and the vertical portion being connected with the horizontal component both ends, and institute The length for stating vertical portion is much smaller than the length of the horizontal component；The lower section for the gear ash set that the mandrel is in, the mandrel On stomata opening upwards.

The gear ash set is slab construction, and the mandrel is in below the slab construction；The air vent openings are upward.

The gear ash set cross section is arc, and the arc opening is downward；The mandrel is in the gear ash set lower section, The opening upwards of stomata on the mandrel.

The drive system includes motor, at least one drive gear of rotation, corresponding every stove is driven by the motor Multiple furnace roller gears of roller, adjacent two furnace roller gear engagements；The drive gear engages with one of furnace roller gear.

The drive system includes the furnace roller gear being arranged on the construction section of described mandrel one end；Multiple furnace roller gears are divided into Two groups, and adjacent two furnace roller gears belong to different groups, form two power transmission combinations；Each power transmission combination Also include at least one motor and at least one drive sprocket driven by the motor；The drive sprocket passes through chain drive Furnace roller pinion rotation in power transmission combination.

Equipment gear, and the midpoint of the equipment gear are provided between the two neighboring furnace roller gear of each group of furnace roller gear Not on the line between the two neighboring furnace roller gear midpoint；The equipment gear passes through the chain and adjacent furnace roller Gear connects.

The drive system includes expansion link；Described expansion link one end is connected with the body of heater；The expansion link other end It is connected with component frame；The construction section is connected after stretching out axle bed with swing arm one end；The swing arm other end is cut with scissors with the component frame Connect.

The mandrel is divided into multigroup, and each group is correspondingly arranged on an expansion link；Each group of expansion link and one Component frame connects；It is connected with every mandrel in group mandrel with a swing arm, swing arm component frame corresponding with the group It is be hinged.

Compared with prior art, had the beneficial effect that possessed by the utility model：Using structure of the present utility model, when burning When there is ash deposition in burning stove, furnace roller is rotated under the driving of motor, change the width in fire-gate leakage ash gap, be advantageous to big The unburned debris of volume crashes into ashcan together with lime-ash from the grey gap of leakage, in addition, even if incinerator is led because using a period of time Cause lime-ash hardened in burner hearth, the disturbance of furnace roller rotation process middle-grade ash set can make hardened lime-ash fragmentation so that burner hearth is hardened Lime-ash is easily discharged from burner hearth, and burner hearth cleaning is periodically into without operating personnel.So that the burning using the fire grate device The better reliability of stove, stronger to the rubbish adaptability that does not sort, the labor intensity and work for also mitigating operating personnel are endangered It is dangerous.

Brief description of the drawings

Fig. 1 is provided by the utility model a kind of for the fire grate device of small refuse incinerator and installed in incinerator Front view when upper；

Fig. 2 is Fig. 1 A-A to sectional view；

Fig. 3 is partial enlarged drawing at Fig. 2 E；

Fig. 4 is partial enlarged drawing at Fig. 2 C；

Fig. 5 is the axonometric drawing of furnace roller；

Fig. 6 be Fig. 2 D direction views, the first embodiment of transmission system；

Fig. 7 be Fig. 2 D direction views, second of embodiment of transmission system；

Fig. 8 be Fig. 2 D direction views, the third embodiment of transmission system；

Fig. 9 be Fig. 2 D direction views, the 4th kind of embodiment of transmission system；

Figure 10 be Fig. 1 B at partial enlarged drawing, the first embodiment of the structure of furnace roller；

Figure 11 be Fig. 1 B at partial enlarged drawing, second of embodiment of structure of furnace roller；

Figure 12 be Fig. 1 B at partial enlarged drawing, the third embodiment of the structure of furnace roller；

Figure 13 be Fig. 1 B at partial enlarged drawing, the 4th kind of embodiment of structure of furnace roller；

Figure 14 be Fig. 1 B at partial enlarged drawing, the 5th kind of embodiment of structure of furnace roller；

Figure 15 is the relative phase relation and motion process when furnace roller is initially installed；

Wherein：

1 --- body of heater 2 --- burner hearth 3 --- lime-ash

4 --- furnace roller 5 --- ashcan 6 --- gaps

7 --- drive system 8 --- gas skirt 9 --- collection chambers

10 --- cooling gas 11 --- air inlet pipe 12 --- axle beds

13 --- furnace roller gear 14 --- drive gear 15 --- motors

16 --- air flue 17 --- disconnected heat channel 18 --- mandrels

19 --- floor 20 --- stomata 21 --- shelves ash sets

22 --- construction section 23 --- auxiliary sprocket wheel 24 --- furnace roller gears

25 --- chain 26 --- drive sprocket 27 --- expansion links

28 --- component frame 29 --- swing arm 30 --- semicircle sets

31 --- flat-top 32 --- burner port 33 --- flat board sets of set

34 --- tile set.

Embodiment

Core of the present utility model, can be by changing to provide a kind of fire grate device for small-sized domestic waste incineration Become the width in fire-gate leakage ash gap, the unburned debris for being advantageous to large volume crashes into ashcan together with lime-ash from the grey gap of leakage, can keep away Exempt from incinerator causes lime-ash to be periodically into burner hearth cleaning ash without operating personnel in burner hearth, deposition, hardened using a period of time Slag, thus the better reliability, stronger to the rubbish adaptability that does not sort of the incinerator using the fire grate device, are also mitigated The labor intensity and work risk of operating personnel.

In order that those skilled in the art more fully understands the technical solution of the utility model, below in conjunction with the accompanying drawings and have The utility model is described in further detail for body embodiment.

Filled as shown in figure 1, Fig. 1 is a kind of fire grate for Small-sized living garbage incinerator provided by the utility model Put, and the fire grate is arranged on front view when on incinerator, and Fig. 2, Fig. 3, Fig. 4, Fig. 5 are combined, wherein：Fig. 2 is Fig. 1 A- A is to sectional view, it is shown that furnace roller 4 is arranged on top view when on body of heater 1；Fig. 3 is partial enlarged drawing at Fig. 2 E, it is shown that is passed Meshing relation in dynamic system 7 between motor 15, the mounting means of drive gear 14 and drive gear 14 and furnace roller gear 13；Figure 4 be partial enlarged drawing at Fig. 2 C, it is shown that mounting means of the furnace roller 4 on body of heater 1, and gas skirt 8, collection chamber 9, and The structure of air flue 16 inside furnace roller 4；Fig. 5 is the axonometric drawing of furnace roller 4.

A kind of described fire grate device for Small-sized living garbage incinerator, including furnace roller 4 on body of heater 1 and The drive system 7 of furnace roller action is controlled, described furnace roller 4 has multiple, and gap 6, described stove are left between two neighboring furnace roller 4 Roller 4 includes mandrel 18, shelves ash set 21, and the floors 19 that shelves ash set 21 is linked together with mandrel 18, and whole furnace roller 4 can be around The axis of mandrel 18 rotates, and described shelves ash set 21 is in the inner chamber of body of heater 1, and the both ends of mandrel 18 are beyond shelves ash 21 length of set Part is construction section 22, and disconnected heat channel 17 is respectively equipped with described construction section 22, and described construction section 22 is distinguished after passing through body of heater 1 It is arranged on by axle bed 12 in solid 1, wherein one end is connected with drive system 7, namely is provided with furnace roller gear 13.The mandrel The side wall of body of heater 1 residing for 18 other ends is provided with gas skirt 8, and the gas skirt 8 surrounds collection chamber 9 with the side wall of body of heater 1, described Gas skirt 8 is provided with air inlet pipe 11, and the described inside of mandrel 18 is provided with the air flue 16 parallel to axis, the entrance of the air flue 16 Positioned at mandrel 18 on the end face of this one end of collection chamber 9, and air flue 16 phase vertical with axis direction is additionally provided with the mandrel 18 Logical stomata 20.Described air flue 16 communicates with collection chamber 9.

Described drive system 7 includes motor 15, drive gear 14, the furnace roller gear 13 of corresponding each furnace roller, and axle Accessory, the described drive gear 14 such as hold to engage with some in furnace roller gear 13, meanwhile, it should be nibbled with drive gear 14 Also furnace roller gear 13 adjacent thereto engages the furnace roller gear 13 of conjunction, and the described quantity of drive gear 14 can be one, also may be used To be multiple, the furnace roller gear 13 engaged with drive gear 14 can be located at outermost or positioned at centre.

Using said structure, when incinerator normal work, furnace roller 4 remains static, and cools down gas 10 from air inlet pipe 11 Into collection chamber 9, then from the air intake duct 16 for entering each furnace roller 4, finally discharged from each stomata 20, participate in burning into burner hearth 2, Cooling gas 10 takes away the heat that furnace roller 4 absorbs, and avoids the temperature of furnace roller 4 too high, meanwhile, because breaking heat channel 17 at the both ends of mandrel 18 In the presence of so that the heat of the high-temperature part of furnace roller 4 conducts to the construction section 22 at both ends as little as possible, avoids bearings at both ends temperature It is too high and cause lubricating oil coking.

After incinerator normal work, when the lime-ash 3 accumulated in burner hearth 2 is excessive, cleaning measure, starter motor can be taken 15, when motor 15 drives 14 rotation on drive gear, drive gear 14 drives some the furnace roller gear 13 being engaged with, the stove Roller gear 13 and then drive other furnace roller gears 13 adjacent thereto and having meshing relation, are pushed away with this example, can be by drive gear 14 Driving force be delivered to each furnace roller gear 13, all furnace rollers 4 start synchronous axial systems, and specific rotary state can be found in Figure 15 C）、d）Both of which.With the rotation of furnace roller 4, the width of actual gap 6 between furnace roller 4 changes, and on furnace roller 4 The lime-ash 3 of shelves ash 21 pairs of accumulations of set disturbs, and promotes the fragmentation of lime-ash 3, when 6 width increase of gap, is advantageous to the inner product of burner hearth 2 The large volume debris and ashes deposited decline into ashcan 5 from gap 6, reach the purpose of removing and lime-ash 3.

Certainly, the drive system 7 is not limited in the structure and working principle of said gear transmission, can also use it His structure type.As shown in fig. 7, the type of drive using chain, sprocket wheel.In this structure, drive system 7 include motor 15, Drive sprocket 26, furnace roller gear 24, auxiliary sprocket wheel 23, and chain 25, one end of the construction section 22 of the mandrel 18 of each furnace roller 4 Provided with a furnace roller gear 24, described furnace roller gear 24 is divided into two groups, drive sprocket 26 is respectively equipped with each group, and together Auxiliary sprocket wheel 23 is provided with one group between two adjacent furnace roller gears 24, each drive sprocket 26 is by matching motor 15 Drive.Described drive system 7 uses this structure, can both realize that the direction of rotation of all furnace rollers 4 was identical, and can also realize adjacent The rotation direction of two furnace rollers 4 is on the contrary, namely 4 kinds of patterns shown in Figure 15.

Described drive system 7 can also use structure and working principle as shown in Figure 8, including expansion link 27, component frame 28, and swing arm 29, described expansion link 27 can be oil cylinder, cylinder or electric pushrod etc., one end of the expansion link 27 It is connected on body of heater 1, the other end is connected on component frame 28, and each mandrel 18 on the construction section 22 of one end the same as being equipped with swing arm 29, all swing arms 29 and all component frame 28 are be hinged.In this structure, with the elongation of expansion link 27, shorten, component can be driven Frame 28 moves, and then drives all swing arms 29 to drive matching furnace roller 4 around the axis of its mandrel 18 in certain angle model Interior synchronous axial system back and forth is enclosed, so as to realize the change of the width of fire grate gap 6.This mode can only realize all furnace rollers 4 to same One rotation, it is impossible to realize the lasting rotation towards same direction of furnace roller 4.

Described drive system 7 can also use structure and working principle as shown in Figure 9, including expansion link 27, component frame 28, and swing arm 29, the difference is that described furnace roller 4 is divided into two groups, each group has respective expansion link 27 and component frame 28, but the direction of two groups of swing arms 29 is different, after each group swing arm 29 is connected with component frame 28, two groups of expansion links 27 control respectively respectively Group furnace roller 4.This mode can realize that the direction of rotation of adjacent furnace roller 4 is different.

The furnace roller 4 for being applicable the above-mentioned scheme of various drive systems 7 can also be in the case where not changing operation principle, using other Structure.

As shown in Figure 10, described shelves ash set 21 can be semicircle set 30, when incinerator is in burning state, described half Circle set 30 is in the lower sections of mandrel 18, and convex surface is down, now, the opening upwards of the stomata 20, namely towards in burning Rubbish, in this structure, cooling gas 10 directly participates in the burning of rubbish after being come out from stomata 20, be more beneficial for control waste incineration State and process, but mandrel 18 directly contacts with the rubbish of burning, bears higher thermic load.

The furnace roller 4 can also use the structure shown in Figure 11, and described shelves ash set 21 is also semicircle set 30, this structure In, the semicircle described in during installation cover 30 convex surfaces upward, concave surface down, the lower section for the semicircle set 30 that mandrel 18 is in, the stomata 20 opening upwards, namely cool down the internal face impacted after gas 10 comes out from stomata 20 in semicircle set 30.In the structure, due to core Axle 18 is not direct to be contacted with the rubbish burned, thus the thermic load of mandrel 18 is smaller, cools down gas 10 in addition also to various semicircle sets 21 are cooled down, thus the better reliability of furnace roller 4.

The furnace roller 4 can also use the structure shown in Figure 12, and described shelves ash set 21 is that flat-top covers 31, namely its cross section In " Mi " shape, and flat-top is upward, the lower section for the flat-top set 31 that mandrel 18 is in, the opening upwards of the stomata 20, namely cooling Gas 10 impacts the lower wall surface in flat-top set 31 after being come out from stomata 20, can set up burning separately in the flat top portion of flat-top set as needed Hole 32, playing improves burning, reduces the purpose that heat transmits to mandrel 18.In the structure mandrel 18 also it is not direct with burn rubbish Rubbish contacts, and the thermic load of furnace roller 4 is also smaller, and manufacture is relatively easy；

The furnace roller 4 can also use the structure shown in Figure 13, and described shelves ash set 21 is that flat board covers 33, namely its cross section In " ━ " shape, burner port 32 is may also set up on the flat board set 33, the lower section for the flat board set 32 that the mandrel 18 is also at is described The opening direction of stomata 20 is also upward, and mandrel 18 is not also direct in the structure contacts with rubbish that is burning, the thermic load of furnace roller 4 It is smaller, it is relatively simple to manufacture；

The furnace roller 4 can also use the structure shown in Figure 14, and described shelves ash set 21 is that tile covers 34, namely its cross section In " ︶ " shape, and concave surface is upward, and down, the lower section for the tile set 18 that the mandrel 18 is also at, the stomata 20 is opened on convex surface Mouth direction is also upward, and mandrel 18 is not also direct in the structure contacts with rubbish that is burning, and the thermic load of furnace roller 4 is also smaller, due to Store up that grey ability is stronger, be more suitable for lighting the rubbish of difficulty.

In above-mentioned all schemes, the mounting means of furnace roller 4 as shown in figure 15, can be according to a in Figure 15）、c）It is shown The same-phase installation of situation, also can be according to the b in Figure 15）、d）The different phase installation of shown situation；The motion mode of furnace roller 4, Can be such as a in Figure 15）、b）Shown two adjacent groups furnace roller 4 rotates in same direction, namely all rotating Vortexes of furnace roller 4, also can be such as C in Figure 15）、d）The rotation direction of shown two adjacent groups furnace roller 4 is opposite.

It should be noted that occur in the utility model the noun of locality " on " refer in Fig. 1 point to burner hearth 2（Remotely Face）Side；" under " refer in Fig. 1 close to ashcan 15（Close to ground）Side.

Claims (11)

1. a kind of fire grate device suitable for small refuse incinerator, it is characterised in that including installed in body of heater（1）On it is multiple Furnace roller（4）With the driving furnace roller（4）The drive system of rotation（7）, and the multiple furnace roller（4）It is placed in burner hearth（2）It is interior；Phase Two adjacent furnace rollers（4）Between be provided with gap（6）；The furnace roller（4）The body of heater is stretched out in one end（1）Afterwards with the drive system （7）Connection；The furnace roller（4）Body of heater at the other end（1）Lateral wall is provided with gas skirt（8）；The gas skirt（8）With it is described Body of heater（1）Lateral wall surrounds collection chamber（9）；The furnace roller（4）It is interior to be provided with air flue（16）, and the furnace roller（4）On offer it is more The individual and air flue（16）The stomata of connection（20）；The air flue（16）Entrance be arranged on the furnace roller（4）Close to the collection Gas hood（8）One end on, and the air flue（16）With the collection chamber（9）Connection；The gas skirt（8）It is provided with and the collection Air chamber（9）The air inlet pipe of connection（11）.

2. the fire grate device according to claim 1 suitable for small refuse incinerator, it is characterised in that the furnace roller （4）Including mandrel（18）With gear ash set（21）；The mandrel（18）With gear ash set（21）Pass through polylith floor（19）Connection；It is described Air flue（16）Along the mandrel（18）It is axially arranged, the stomata（20）It is opened in the mandrel（18）On；The mandrel（18） Both ends are beyond the gear ash set（21）, form two construction sections（22）；One of construction section（22）Sequentially pass through body of heater（1）Side Wall, installed in body of heater（1）On axle bed（12）Afterwards with the drive system（7）Connection；Another construction section（22）With it is described Collection chamber（9）Connection.

3. the fire grate device according to claim 2 suitable for small refuse incinerator, it is characterised in that the gear ash set （21）Cross section is semicircular arc；When incinerator is in burning state, the gear ash set（21）In mandrel（18）Lower section, And convex surface is down, the mandrel（18）On stomata（20）Opening upwards；Or when incinerator is in burning state, it is described Gear ash set（21）Convex surface upward, mandrel（18）The gear ash set being in（21）Lower section, the mandrel（18）On stomata（20）'s Opening upwards.

4. the fire grate device according to claim 2 suitable for small refuse incinerator, it is characterised in that the gear ash set （21）Cross section includes a horizontal component and the vertical portion being connected with the horizontal component both ends, and the length of the vertical portion Length of the degree much smaller than the horizontal component；The mandrel（18）The gear ash set being in（21）Lower section, the mandrel（18）On Stomata（20）Opening upwards.

5. the fire grate device according to claim 2 suitable for small refuse incinerator, it is characterised in that the gear ash set （21）For slab construction, and the mandrel（18）Below the slab construction；The stomata（20）Opening upwards.

6. the fire grate device according to claim 2 suitable for small refuse incinerator, it is characterised in that the gear ash set （21）Cross section is arc, and the arc opening is downward；The mandrel（18）In the gear ash set（21）Lower section, the core Axle（18）On stomata（20）Opening upwards.

7. the fire grate device suitable for small refuse incinerator according to one of claim 2~6, it is characterised in that institute State drive system（7）Including motor（15）, by the motor（15）Drive at least one drive gear of rotation（14）, it is correspondingly every Root furnace roller（4）Multiple furnace roller gears（13）, adjacent two furnace roller gears（13）Engagement；The drive gear（14）With wherein One furnace roller gear（13）Engagement.

8. the fire grate device suitable for small refuse incinerator according to one of claim 2~6, it is characterised in that institute State drive system（7）Including installed in the mandrel（18）One end construction section（22）On furnace roller gear（24）；Multiple furnace roller teeth Wheel（24）It is divided into two groups, and adjacent two furnace roller gears（24）Belong to different groups, form two power transmission combinations；Often Individual power transmission combination also includes at least one motor（15）With at least one drive sprocket driven by the motor（26）；Institute State drive sprocket（26）Pass through chain（25）Drive the furnace roller gear in power transmission combination（24）Rotate.

9. the fire grate device according to claim 8 suitable for small refuse incinerator, it is characterised in that each group of furnace roller Gear（24）Two neighboring furnace roller gear（24）Between be provided with equipment gear（23）, and the equipment gear（23）Midpoint not In the two neighboring furnace roller gear（24）On line between midpoint；The equipment gear（23）Pass through the chain（25）With Adjacent furnace roller gear（24）Connection.

10. the fire grate device suitable for small refuse incinerator according to one of claim 2~6, it is characterised in that institute State drive system（7）Including expansion link（27）；The expansion link（27）One end and the body of heater（1）Connection；The expansion link （27）The other end and component frame（28）Connection；The construction section（22）Stretch out axle bed（12）Afterwards with swing arm（29）One end connects；Institute State swing arm（29）The other end and the component frame（28）It is be hinged.

11. the fire grate device according to claim 10 suitable for small refuse incinerator, it is characterised in that the mandrel （18）It is divided into multigroup, each group is correspondingly arranged on an expansion link（27）；Each group of expansion link（27）With a component Frame（28）Connection；With group mandrel（18）In every mandrel（18）With a swing arm（29）Connection, the swing arm（29）With Component frame corresponding to the group（28）It is be hinged.