CN1083967C - Grate - Google Patents
Grate Download PDFInfo
- Publication number
- CN1083967C CN1083967C CN95190448.5A CN95190448A CN1083967C CN 1083967 C CN1083967 C CN 1083967C CN 95190448 A CN95190448 A CN 95190448A CN 1083967 C CN1083967 C CN 1083967C
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- China
- Prior art keywords
- grate
- framework
- fire grate
- fire
- revolving
- Prior art date
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- Expired - Fee Related
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/10—Under-feed arrangements
- F23K3/14—Under-feed arrangements feeding by screw
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B1/00—Combustion apparatus using only lump fuel
- F23B1/16—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support
- F23B1/24—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support using rotating grate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H9/00—Revolving-grates; Rocking or shaking grates
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Incineration Of Waste (AREA)
- Storage Of Fruits Or Vegetables (AREA)
- Solid-Fuel Combustion (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Gasification And Melting Of Waste (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Dental Preparations (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Steroid Compounds (AREA)
Abstract
The object of the invention is a grate comprising stationary and rotating grate sections. The grate is preferably fitted in a combustion chamber of circular horizontal cross section. According to the invention, the stationary grate section comprises at least two stationary grate frames, and the rotating grate section comprises at least one rotating grate frame, the grate frames being arranged in a concentric, stepped manner close to one another, partly overlapping one another, so that the innermost grate frame is the uppermost with respect to the other grate frames. The number of grate frames is odd and they are arranged so that every second grate frame is a stationary one and every second one is a rotating grate frame.
Description
The present invention relates to a kind of fire grate.
Known from patent document US-4437452 already have an aforementioned fire grate, and it comprises: a fixing central fire grate part and the revolving grate part around this central authorities' fire grate.It is conical completely that dead grate partly is, and supplies with burner hearth by the especially big part combustion air of this dead grate.Utilization transmits fuel and remove ashes from burner hearth with the fixedly expansion bracket that revolving grate partly links to each other.
The defective of above-mentioned fire grate is: said two fire grates partly are bigger parts, and they utilize complicated apparatus to be provided with in the ground burner hearth, therefore, overhaul particularly cleaning and get up pretty troublesome and very difficult.
The purpose of this invention is to provide a kind of novel fire grate, its simple and practical and be easy to the maintenance.Specifically, the purpose of this invention is to provide a kind of like this fire grate, it is applicable to solid fuel burner hearth, combustion chamber, boiler or the similar device of different size and is easy to and makes.
Fire grate of the present invention has disclosed feature in the independent claim.
Fire grate of the present invention comprises dead grate part and revolving grate part, and this fire grate preferably is installed in the burner hearth with circular horizontal cross.According to the present invention, dead grate partly comprises at least two independently dead grate frameworks, revolving grate partly comprises at least one revolving grate framework, this framework is arranged between the dead grate framework, it is coaxial stepped and partly overlap mutually each other that dead grate framework and revolving grate framework are against each other together, therefore, the fire grate framework that inner most fire grate framework is a topmost to other fire grate framework, the revolving grate framework to be installed with the eccentric mutually mode of dead grate framework, therefore, a transverse movement of revolving grate framework relative fixed fire grate framework rotatablely moves with it and combines.
The invention has the advantages that: it comprises several fire grate frameworks, and, rotatablely moving of one or more revolving grate frameworks is eccentric mutually, thereby, the fringe region of these fire grates can relatively move and can relatively move in the mode of linear reciprocal movement in the reciprocating motion mode of rotation each other, therefore, overlap each other and can keep clean to contacted rotation of small part and dead grate framework.
In one embodiment of the invention, the quantity of fire grate framework is odd number, that is to say, has three fire grate frameworks at least, and they are arranged to all fix every a fire grate framework, and other fire grate framework then is rotatable.The advantage of this structure is, can in the intended manner said fire grate be installed in the burner hearth of different size so that transmit and combustion fuel by the possible mode of the best.
In another embodiment of the present invention, hithermost each other revolving grate framework is arranged to and can be rotated along opposite direction.The advantage of this structure is to clean the fire grate framework effectively.Utilize this structure, can effectively ashes be removed downwards to the ashes case to another fire grate framework from a fire grate framework.
In yet another embodiment of the present invention, each fire grate framework all is one to be essentially flat endless member, except that outermost fire grate framework, near the outer rim of above-mentioned endless member, be provided with a support edge, this support edge is preferably disposed on the lower surface of aforementioned outer rim, said support edge includes support, the distance that these supports are downward-sloping basically and each interval is very little.Therefore, fire grate of the present invention preferably is made of the fire grate framework that overlaps mutually, and these fire grate frameworks have similar basically structure, and the support edge of the fire grate framework that overlaps mutually reclines or is close to the next upper surface of the fire grate framework of setting radially outward at least.This advantages of application is that said support edge and support can be used as device and the fire grate framework cleaner that can remove ashes effectively.
In another embodiment of the present invention, the support that is included in the support edge in the fire grate framework has formed pore together together with the upper surface that is positioned at that fire grate framework after this fire grate framework in mode radially outward, and these pores are used for the combustion air supplied with from the fire grate downside.This advantages of application is and can comes to provide combustion air from the downside of fire grate with simple and effective and efficient manner by the support edge that plays the cleaning device effect.
In yet another embodiment of the present invention, the pore of each revolving grate framework all is arranged to outwardly open with the outer rim of relative this fire grate framework of the obtuse-angulate mode of direction of rotation.In this case, the pore of fire grate framework is arranged to and can be opened wide in the mode of leaving direction of rotation, and the direction that the relative direction of rotation of these pores energy is pressed tangent line stretches.This advantages of application is that ashes can not be disseminated to the space of fire grate below via the pore of revolving grate framework.Another advantage is that the support on the pore edge can be used to clean effectively the dead grate framework and the ashes on the dead grate framework are moved to next fire grate framework.Another advantage is that the combustion air of supplying with from the fire grate downside can mix with want burnt fuel effectively mutually.
In another embodiment of the present invention, each revolving grate framework includes the drive unit of a sprocket wheel and such as hydraulic cylinder, and this drive unit is used for and is used for above-mentioned frame sprocket wheel and this fire grate framework is periodically moved.This advantages of application is that each fire grate framework all can be used independently and can therefore, help to clean fire grate and supply with combustion air with the direction rotation of predetermined speed along drive.
In yet another embodiment of the present invention, the drive unit of hydraulic cylinder preferably is installed in the air duct.This advantages of application is to be easy to overhaul and the heat of fire grate and burner hearth can not exert an influence to the hydraulic cylinder that is arranged in the air flue.The combustion air that utilization is supplied with via air duct is the cooling fluid cylinder pressure effectively.
According to another one embodiment of the present invention, the combustion air feedway comprises air duct, and these passages link to each other with the case of supplying gas, and the case of supplying gas then is arranged on the below of fire grate, preferably is arranged in the zone that is limited by the dead grate framework.Therefore, the dead grate framework is divided into the part of fire grate downside fan-shaped, by this fan-shaped part, combustion air can be supplied with burner hearth via the pore of fire grate framework.This structure has such advantage: the different fire grate frameworks that combustion air is supplied with fire grate can be divided into a plurality of zones to carry out, thereby, can regulate burning and burner hearth is carried out energy control by simple and effective and efficient manner.
Below present invention will be described in detail with reference to the accompanying, in the accompanying drawings;
Fig. 1 has shown and the vertical section of the perpendicular burner hearth of fuel supply channel, fire grate of the present invention has been installed in this burner hearth;
Fig. 2 has shown that burner hearth is along another section of fuel supply channel direction among Fig. 1;
Fig. 3 has shown the horizontal profile of burner hearth among Fig. 1, thereby, can observe fire grate from the top;
Fig. 4 has illustrated the general view of the fire grate when the top is observed, and has removed actual fire grate framework from this fire grate.
With reference to Fig. 1, fire grate 1 of the present invention is installed in the burner hearth 2 with circular horizontal cross, this burner hearth should with in play the anterior burner hearth of boiler.The bottom 2a of burner hearth 2 is cylindrical, and top 2b is then tapered.Tapered top 2b links to each other with flue 3, and flue 3 then links to each other so that obtain heat from burnt fuel with a boiler (not shown) with a rear hearth.Furnace shell 4 is provided with thermal insulator.Fire grate 1 is installed in the bottom 2a of burner hearth 2.The annular furnace ash bin surrounds fire grate 1.
Fire grate 1 of the present invention comprises fixing and revolving grate part 6,7.Dead grate part 6 comprises some independently dead grate frameworks 61,62,63,64, and revolving grate part 7 comprises some independently revolving grate frameworks 71,72,73, and these frameworks are arranged between the dead grate framework 61,62,63,64.Fire grate framework 61,62,63,64; 71,72,73 quantity is odd number, and this application comprises that counting is 7 fire grate framework.Be revolving grate framework 71,72,73 every a fire grate framework, other fire grate framework then is a dead grate framework 61,62,63,64.Penetralia and outermost fire grate framework 61,64 are the dead grate framework.
The fire grate part 6,7 of fire grate 1 is arranged on around the delivery outlet of feed hopper 11.Fire grate framework 61,62,63,64; 71,72,73 is flat annular element basically.These fire grate frameworks with coaxial and become stair-stepping mode be arranged on delivery outlet 12 around, therefore, near first penetralia fire grate framework 61 that also promptly is positioned at feed hopper 11 delivery outlets 12 is fire grate frameworks of topmost, and, always the fire grate framework than the front is low for the fire grate framework 71,62,72,63,73,64 of back, as depicted in figs. 1 and 2.Near the partly stacked each other or overlapping fringe region of fire grate framework.
Except that outermost fire grate framework 64, dead grate framework and revolving grate framework 61,62,63; 71,72,73 have identical structure basically.Just their diameter is different, that is to say, and the fire grate framework 64 from inner most fire grate framework 61 to the outside, diameter increases.Each the fire grate framework 61,62,63,64 that comprises most external fire grate framework 64; 71,72,73 by the board-like material formation, preferably is made of suitable steel plate. Fire grate framework 61,62,63,64; 71,72,73 inner edge 61a, 62a, 63a, 64a; 71a, 72a, 73a preferably are fixed on the supporting structure, then be provided with support edge 13 on outer rim 61b, 62b, 63b, 71b, 72b, the 73b, support edge 13 comprises the support 13a that is provided with by small distance each other, therefore, can form pore 14 (referring to Fig. 3) between these supports. Fire grate framework 61,62,63; 71,72,73 outer rim 61b, 62b, 63b, 71b, 72b, 73b are bent downwardly slightly, and the support edge 13 that has support 13a then is arranged near the lower surface of aforementioned outer rim.Fixing and revolving grate framework 61,71,62,72,63,73 consecutive outer rim 61b, 71b, 62b, 72b, 63b, 73b and support edge 13 are connected near the above-mentioned outer rim support 13a and always are positioned near the upper surface of most external and low fire grate framework 71,62,72,63,73,64 or are placed on this upper surface.
In addition, fire grate framework 61,62,63,64,71,72,73 is provided with in consecutive mode each other: the inner surface 61 of first dead grate framework 61 is preferably in around the delivery outlet 12 that is installed in feed hopper 11 in the same plane basically.The first revolving grate framework 71 preferably is installed in cylindrical support 15 from the position near inner edge 71a from the bottom; On 151.The first revolving grate framework 71 and supporting member 151 thereof are placed in bearing 16; On 161, aforementioned supporting member then is installed in this bearing in the mode of off-centre.Term " off-centre " is meant herein: with revolving grate framework 71 before the eccentric mutually mode of dead grate framework 61 revolving grate framework 71 is installed.Simultaneously, also revolving grate framework 71 to be installed with the eccentric mutually mode of next dead grate framework 62.Preferably with homocentric and all dead grate frameworks 61,62,63,64 are installed each other with the mutually homocentric mode of feed hopper delivery outlet 12.But, with the mutually homocentric mode erection support 16 of imaginary vertical axis through dead grate framework 61,62,63,64 centers; 161.Utilize horizontal vertical runner 17,18 rotatably with bearing 16; 161 are bearing in supporting member 19; On 191 the appropriate location, and supporting member 19; 191 be arranged on feed hopper 11 around.Vertical annular lip 16a is arranged on bearing 16; On 161 the lower surface, horizontal runner 17 is bearing on this annular lip.
Bearing 16; 161 outer rim is provided with sprocket wheel 20; 201.One hydraulic cylinder 22 preferably; 221 drive unit acts on sprocket wheel 20; 201, and, by means of bearing 16; 161 and supporting member 15; 151 make fire grate framework 71 turn round along the drive direction.Hydraulic cylinder 22; 221 are arranged on air duct 23; In 231.Hydraulic cylinder 22; 221 cylinder body 22a (Fig. 4) links to each other with suitable supporting member 24, and supporting member 24 then is arranged in the air duct.Hydraulic cylinder 22; 221 piston 22b links to each other with control stick 25 again, and another free end of this control stick is contained in sprocket wheel 20; Between 201 the double wedge, therefore, by suitably driving hydraulic cylinder 22; 221 and back and forth promote control stick 25, can once make sprocket wheel 20; The predetermined direction of rotation in 201 edges is rotated a tooth pitch of double wedge forward.
The second dead grate framework 62 of fire grate 1 is installed in the outside and the downside of the first revolving grate framework 71, and therefore, the support edge 13 of revolving grate framework 71 nestles up the upper surface of this dead grate framework in the inner edge 62a of the second dead grate framework 62 side.Be preferably in the bottom of burner hearth 2 and utilize supporting member 26; 261 in the lower surface one side place of the inner edge 62a of the second dead grate framework 62 with this second dead grate supporting framework in position, and supporting member 26; 261 best cylindrical.Simultaneously, at columniform supporting member 26; Include first case 27, the first air ducts 23 of supplying gas in 261; 231 link to each other with this case of supplying gas.
As the relative first dead grate framework 61 the first revolving grate framework 71 is set, in the same way the second revolving grate framework 72 partly is arranged on the outside and the downside of the second dead grate framework 62.As with corresponding bearing 16; It is such that 161 modes that link to each other support the first revolving grate framework 71, uses and second bearing 16 according to same principle; 162 second cylindrical support 15 that link to each other; 152 modes with off-centre support the second revolving grate framework 72.The gentle vertical runner 17,18 of water is rotatably with bearing 16; 162 are bearing in supporting member 19; On 192 the appropriate location, and supporting member 19; 192 supporting members 26 that are arranged on the second dead grate framework 62; Around 261.Vertical annular lip 16a is arranged on bearing 16; On 162 the lower surface, horizontal runner 17 is bearing on this flange.Second hydraulic cylinder 22 preferably; 222 second drive unit is used for and is used for and bearing 16; 162 sprocket wheels 20 that link to each other; 202, therefore, revolving grate framework 72 is moved along the drive direction.The second revolving grate framework 72 is arranged to and can be rotated along opposite direction by the previous relatively i.e. first revolving grate framework 71.As first hydraulic cylinder 22 that will be relevant with the first revolving grate framework 71; 221 are arranged on first air duct 23; Such in 231, in the same way with second hydraulic cylinder 22; 222 are arranged on second air channel 23; In 232.
As the previous relative first revolving grate framework 71 the second dead grate framework 62 is set, in the same way the 3rd dead grate framework 63 is arranged on the outside and the downside of the second revolving grate framework 72.Utilize the 3rd supporting member 62; 262 are bearing in the bottom of burner hearth 2 with the 3rd dead grate framework 63, and the 3rd supporting member 26; 262 best cylindrical.The supporting member 26 of the second dead grate framework 62; The three cylindrical shape supporting member 26 of the 261 and the 3rd dead grate framework 63; 262 surround second case 28, the second air ducts 23 of supplying gas jointly; 232 link to each other with this second case 28 of supplying gas.
As above corresponding relatively dead grate framework 61,62 the first and second revolving grate frameworks 71,72 are set, in the same way the 3rd revolving grate framework 73 are arranged on the outside and the downside of the 3rd dead grate framework 63.As with corresponding bearing 16; It is such that 161,162 modes that link to each other support the first and second revolving grate frameworks 71,72, uses and the 3rd bearing 16 according to same principle; The 163 three cylindrical shape supporting members 15 that link to each other; 153 modes with off-centre support the 3rd revolving grate framework 73.The gentle vertical runner 17,18 of water is rotatably with bearing 16; 163 are bearing in supporting member 19; On 193 the appropriate location, and supporting member 19; 193 supporting members 26 that are arranged on the 3rd dead grate framework 63; Around 262.Vertical annular lip 16a is arranged on bearing 16; On 163 the lower surface, horizontal runner 17 is bearing on this flange.The 3rd hydraulic cylinder 22 preferably; 223 the 3rd drive unit is used for and is used for and bearing 16; 163 sprocket wheels 20 that link to each other; 203, therefore, revolving grate framework 73 is moved along the drive direction.The 3rd revolving grate framework 73 is arranged to and can be rotated along opposite direction by the previous relatively i.e. second revolving grate framework 72.As above first and second hydraulic cylinders 22 that will be relevant with the first and second revolving grate frameworks 71,72; 221; 222 are arranged on first and second air ducts 23; Such in 231,232, in the same way with the 3rd hydraulic cylinder 22; 223 are arranged on the 3rd air duct 22; In 233.
As aforementioned relate to fixing and the revolving grate framework, in an identical manner the 4th dead grate framework 64 is arranged on the outside and the downside of the 3rd revolving grate framework 73 basically.Utilize the 4th supporting member 26; 263 are bearing in the bottom of burner hearth 2 with the 4th dead grate framework 64, and the 4th supporting member 26; 263 best cylindrical.The supporting member 26 of the 3rd dead grate framework 63; The 4th supporting member 26 of the 262 and the 4th dead grate framework 64; 263 surround the 3rd case 29, the three air ducts 23,233 of supplying gas jointly links to each other with this case 29 of supplying gas.
The 4th dead grate framework 64 is outermost fire grate frameworks, thereby its shape is different from aforesaid other fire grate framework 61,62,63,71,72,73 to a certain extent.In should using, fire grate framework 64 is the tabular fringewares that are flat basically, and its upper surface is configured to a flat surface.On the lower surface of fire grate framework 64, there is not support edge 13, because do not need the support edge here.Between the shell 4 of the outer rim 64b of fire grate framework 64 and burner hearth 2 slit 30 is arranged, ashes can fall into ashes case 5 via this slit.
The shell that burner hearth 2 is positioned at fire grate 1 upper surface downside is provided with gathering hole 31, can take out ashes from ashes case 5 by these gathering holes.Supporting member 26 at dead grate framework 62,63,64; Same mode is provided with gathering hole 32,33,34 (Fig. 4) on 261,262,263, can overhaul and the cleaning case 27,28,29 of supplying gas by these gathering holes.In addition, air duct 35 links to each other with ashes case 5, can be via the aforementioned air duct 23 that leads to fire grate 1 downside by this air duct; 231,232,233 pores 14 by the fire grate framework guide to burner hearth 2 with combustion air.
Should be noted that the pore 14 of each revolving grate framework 71,72,73 all is arranged to outer rim 71b, the 72b of relative fire grate framework, 73b by become the mode of obtuse angle O outwardly open with direction of rotation.Therefore, the centre is provided with the preferably elongated blade 13 of support 13a of the support edge 13 of pore 14, these blades longitudinally are provided with along the lower surface of fire grate framework, thereby can outwards guide combustion air from the downside of fire grate 1 and can outwards remove ashes effectively from next fire grate framework when the fire grate framework is done eccentric transverse movement.
In general, burner hearth shown in the accompanying drawing and fire grate operate as follows.Along feeder channel 8 solid fuel such as mud coal is supplied with burner hearth via feed hopper 11 with feed worm 9.Solid fuel is discharged into the not ipsilateral of delivery outlet via delivery outlet 12 and is distributed on the fire grate 1 from feed hopper 11.By air duct 35, ashes case 5 and slit 30 combustion air is guided to burner hearth 2, also by being positioned at the air duct 23 of fire grate 1 downside; 231,232,233 combustion air guided to the downside of fire grate framework 61,62,63,71,72,73, and the pore 14 by the fire grate framework guides to fuel and burner hearth 2 with combustion air.Owing to can supply with combustion air effectively, fuel can burning fully on fire grate 1.In burning, utilize such as hydraulic cylinder 22; 221,222,223 and so on drive unit is by means of sprocket wheel 20; 201,202,203 make the revolving grate framework 71,72,73 of fire grate 1 once move a tooth pitch as described above.The second revolving grate framework 72 is along direction B rotation, and the first and the 3rd revolving grate framework 71,73 is A rotation in opposite direction then.The result of fire grate framework 71,72,73 rotations is: because these fire grate frameworks are to install with eccentric manner, so they also can flatly move back and forth a bit of distance, therefore, thereby the upper surface of the inswept revolving grate framework 71,72,73 of the support rim of dead grate framework 61,62,63 13 meetings cleans this upper surface, correspondingly, the support edge on revolving grate framework 71,72,73 outer rims 13 can be inswept and cleaning be positioned at the upper surface of the subsequent fixed fire grate framework 62,63,64 in the downside and the outside.
The width that it shall yet further be noted that fire grate framework 61,62,63,71,72,73 is less with respect to the diameter of fire grate 1 and fire grate framework thereof, thereby, can clean these fire grate frameworks in the above described manner effectively.Like this, can little by little the ashes of burning back fuel be removed to first revolving grate framework 72 or the like from the first dead grate framework 61, fall into ashes case 5 via slit 30 until ashes.Can from the ashes case, dispose ashes by gathering hole 31 at any time.
More than main with reference to a most preferred embodiment understand the present invention, still, clearly, in the invention thought range that appended claim limited, can use the present invention by multiple mode.
Claims (10)
1. a fire grate (1), it comprises dead grate part (6) and revolving grate part (7), this fire grate (1) is installed in the burner hearth (2) with circular horizontal cross, described fire grate is characterised in that, dead grate part (6) comprises at least two independently dead grate frameworks (61,62,63,64), revolving grate part (7) comprises at least one revolving grate framework (71,72,73), this framework is arranged between the dead grate framework, with coaxial and dead grate framework and revolving grate framework are set each other in the close mode of stairstepping, and, they partly overlap mutually each other, therefore, inner most fire grate framework (61) is to other fire grate framework (62,63,64,71,72,73) be the fire grate of topmost, with with dead grate framework (61,62,63,64) eccentric mutually mode is installed revolving grate framework (71,72,73), thereby, revolving grate framework relative fixed fire grate framework is done and its transverse movement that rotatablely moves and combine.
2. fire grate as claimed in claim 1, it is characterized in that, the quantity of fire grate (61,62,63,64,71,72,73) is odd number, they are arranged to all fix every a fire grate framework, and other fire grate framework then is the fire grate framework (61,71,62,72,63,73,64) of rotation.
3. fire grate as claimed in claim 2 is characterized in that, inner most and outermost fire grate framework (61,64) is the dead grate framework.
4. as claim 1,2 or 3 described fire grates, it is characterized in that the revolving grate framework that relies on recently mutually (71,72,72,73) is arranged to (A, B) rotation in opposite direction.
5. fire grate as claimed in claim 1, it is characterized in that, each fire grate framework (61,62,63,71,72,73) all is one to be essentially flat endless member, except that outermost fire grate framework (64), outer rim (61b at above-mentioned endless member, 62b, 63b, 64b, 71b, 72b, 73b) near be provided with a support edge (13), this support edge is arranged on the lower surface of aforementioned outer rim, said support edge includes support (13a), and the distance that these support each intervals are very little is also downward-sloping basically.
6. fire grate as claimed in claim 5, it is characterized in that, the support (13a) that is included in the support edge (13) in the fire grate framework (61,71,62,72,63,73) has formed pore (14) together together with the upper surface of next fire grate framework (61,71,62,72,63,73), and these pores are used for the combustion air supplied with from the downside of fire grate (1).
7. fire grate as claimed in claim 6 is characterized in that, the pore (14) of each revolving grate framework (71,72,73) all is arranged to become the outer rim of the relative fire grate framework of mode at obtuse angle (6) outwardly open with direction of rotation (A, B).
8. fire grate as claimed in claim 1 is characterized in that, each revolving grate framework (71,72,73) includes a sprocket wheel (20; 201,202,203) with one such as hydraulic cylinder (22; 221,222,223) and so on drive unit, this drive unit are used for and are used for above-mentioned sprocket wheel (20; 201,202,203) and fire grate framework (71,72,73) is moved along the drive direction.
9. fire grate as claimed in claim 7 is characterized in that, with hydraulic cylinder (22; 221,222,223) drive unit is installed in air duct (23; 231,232,233) in.
10. fire grate as claimed in claim 1 is characterized in that, said combustion air feed system comprises air duct (23; 231,232,233), these passages link to each other with the case (27,28,29) of supplying gas, and the case of supplying gas then is arranged on the below of fire grate (1), preferably is arranged in the zone that is limited by dead grate framework (61,62,63,64).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI942350A FI95964C (en) | 1994-05-20 | 1994-05-20 | Grate |
| FI942350 | 1994-05-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1128560A CN1128560A (en) | 1996-08-07 |
| CN1083967C true CN1083967C (en) | 2002-05-01 |
Family
ID=8540744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95190448.5A Expired - Fee Related CN1083967C (en) | 1994-05-20 | 1995-05-19 | Grate |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0708902B1 (en) |
| CN (1) | CN1083967C (en) |
| AT (1) | ATE165149T1 (en) |
| AU (1) | AU2448995A (en) |
| DE (1) | DE69502070T2 (en) |
| DK (1) | DK0708902T3 (en) |
| EE (1) | EE03782B1 (en) |
| FI (1) | FI95964C (en) |
| PL (1) | PL312616A1 (en) |
| RU (1) | RU2138734C1 (en) |
| WO (1) | WO1995032392A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI103832B (en) * | 1997-03-03 | 1999-09-30 | Waertsilae Biopower Oy | Grate |
| ITUB20153154A1 (en) * | 2015-08-18 | 2017-02-18 | Paolo Gaggero | Grill for burners or gas generators for solid fuels and gas for biomasses |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2091587A (en) * | 1935-01-19 | 1937-08-31 | Schmidt Sche Heissdampf | Revolving grate |
| DE919656C (en) * | 1945-02-16 | 1954-11-02 | Wagner Hochdruck Dampfturbinen | Round grate for solid fuels |
| US4388876A (en) * | 1981-04-06 | 1983-06-21 | Enterprises International, Inc. | Ash removal system |
-
1994
- 1994-05-20 FI FI942350A patent/FI95964C/en not_active IP Right Cessation
-
1995
- 1995-05-19 CN CN95190448.5A patent/CN1083967C/en not_active Expired - Fee Related
- 1995-05-19 AU AU24489/95A patent/AU2448995A/en not_active Abandoned
- 1995-05-19 RU RU96104264/06A patent/RU2138734C1/en not_active IP Right Cessation
- 1995-05-19 DK DK95918631T patent/DK0708902T3/en active
- 1995-05-19 EE EE9600008A patent/EE03782B1/en unknown
- 1995-05-19 WO PCT/FI1995/000274 patent/WO1995032392A1/en active IP Right Grant
- 1995-05-19 EP EP95918631A patent/EP0708902B1/en not_active Expired - Lifetime
- 1995-05-19 DE DE69502070T patent/DE69502070T2/en not_active Expired - Lifetime
- 1995-05-19 AT AT95918631T patent/ATE165149T1/en active
- 1995-05-19 PL PL95312616A patent/PL312616A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ATE165149T1 (en) | 1998-05-15 |
| RU2138734C1 (en) | 1999-09-27 |
| FI95964B (en) | 1995-12-29 |
| FI942350A0 (en) | 1994-05-20 |
| DE69502070T2 (en) | 1998-12-17 |
| PL312616A1 (en) | 1996-04-29 |
| WO1995032392A1 (en) | 1995-11-30 |
| EP0708902B1 (en) | 1998-04-15 |
| EE9600008A (en) | 1996-04-15 |
| CN1128560A (en) | 1996-08-07 |
| AU2448995A (en) | 1995-12-18 |
| EP0708902A1 (en) | 1996-05-01 |
| EE03782B1 (en) | 2002-06-17 |
| DK0708902T3 (en) | 1999-01-25 |
| DE69502070D1 (en) | 1998-05-20 |
| FI95964C (en) | 1996-04-10 |
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