CN1252415C - Fire grate for motor grate combustion appts. and sealing structure between side walls of combustion appts. - Google Patents

Abstract

The present invention relates to a furnace grate in a step type power-driven grate burning device of a garbage furnace and a sealing structure between side plates of the burning device, wherein the furnace grate is used for burning urban garbage, etc., and component parts can be assembled and dismantled easily. A step type power-driven grate is provided with the side plates, sealing plates and a fire-resistant sealing material, wherein the side plates are positioned on both sides of each fixed furnace grate and each movable furnace grate and are fixed on one side of the fixed furnace grate, the sealing plates are positioned on both sides of each side plate, and the fire-resistant sealing material is additionally arranged among the side plates, the sealing plates and a fire-resistant wall and seals the space among the side plates, the sealing plates and the fire-resistant wall, the side plates are divided into side plates approximately opposite to the side surface of the fixed furnace grates and are used for fixed furnace grates and side plates which are approximately opposite to the movable furnace grates and are used for movable furnace grates and are not overlapped mutually when seen from the direction the same as the reciprocal moving direction of the movable furnace grates in the step type power-driven grate, all the divided fixed furnace grates are removably fixed on one side of each fixed furnace grate by the side plates, one side of each fixed furnace grate is opposite to one side of another fixed furnace grate, and all the divided movable furnace grates are removably fixed on the side plates used for the adjacent fixed furnace grates by the side plates simultaneously.

Description

Hermetically-sealed construction in the stoker burner between fire grate and the burner sidewall

Technical field

The present invention relates to be used for to burn such as the fire grate of the staged stoker burner of the incinerator of municipal refuse etc. and the improvement of the hermetically-sealed construction between the burner sidewall.

Background technology

Usually, the motor-driven stoker burner of staged that is used for incinerator is provided with the dust sending device that predetermined amounts is carried rubbish successively; The dry stoker that is used for garbage drying; The burning stoker that is used for combustion refuse; Be used for the after-combustion stoker of after-combustion (second-time burning) rubbish etc.,, the primary combustion air carried from descending in the rubbish on each stoker of direction, rubbish is burnt continuously while transmitting by being located at the hopper of each stoker below.

And dry stoker, burning stoker and after-combustion stoker have roughly the same structure, as these so-called staged stokers, known just like be stated from the spy open flat 7-305826 number in the past in the example, Figure 17 and device shown in Figure 180.

The dead grate 101 of this staged stoker 100 and movable fire grate 102 are staggered and stepped configuration.Each fire grate 101,102 is installed on the grate frame 103, and the grate frame 103 of movable fire grate 102 usefulness wherein is installed on the bogie 104.When vibrated drive equipment (not having diagram) action, bogie 104 is done fore-and-aft direction and is moved on slide unit 105, and movable fire grate 102 relative fixed fire grates 101 are done back and forth movement, and burn to lower transmission limit from the eminence of siege on the rubbish limit.

Be provided with the hopper (ash discharge hopper) 106 that receives fallout below siege, it has the fallout conveyer belt (not having diagram) of transporting fallout.

Primary combustion air D sends in the hopper 106, and the air blow-off outlet 107 (gaps of adjacent 101,102 formation of fire grate up and down) that forms from the front end of each fire grate 101,102 sprays in waste layer, carries out waste incineration.

The fire grate body 108 that constitutes each fire grate 101,102 is provided with the fin 109 that is used to reduce fire grate body temperature degree, by dispelling the heat with contacting of primary combustion air D.

Yet there is the difficult point of the assembling and the decomposition that are difficult to easily to carry out component parts in this staged stoker burner.

In view of the above problems, the present invention promptly is the motion that is used to address the above problem, and its problem is to provide fire grate in the staged stoker burner of a kind of assembling that can easily carry out component parts and decomposition and the hermetically-sealed construction between the burner sidewall.

Summary of the invention

The fire grate of the staged stoker burner that is used for incinerator of the present invention and the essential characteristic of the hermetically-sealed construction between the burner sidewall are to possess side plate, sealing plate, flame-proof sealing material, side plate is positioned at along interconnected dead grate of the throughput direction of rubbish and movable fire grate both sides and is fixed on dead grate one side, sealing plate is positioned at the side plate both sides, flame-proof sealing material is installed at side plate, between sealing plate and the refractory oven, in the staged stoker that seals therebetween, be provided with below dead grate and movable grate: bogie is fixed with the movable grate frame that supports movable grate on it; Leg-of-mutton sliding-contact plate is arranged on the front and back of upper surface one side of bogie, is contacted with on the stationary furnace bedstead of supporting dead grate and moves; Roller, it rotates the front and back that the earth's axis freely is bearing in lower surface one side of bogie; Guide plate has the identical inclined plane of sliding-contact plate that gradient and roller roll; And drive unit, described bogie is is only come and gone at a certain distance obliquely upward move; By being come and gone, moves bogie, and being come and gone, moves movable grate, to be positioned at the both sides of movable grate and movable grate, and be fixed on side plate on the dead grate be divided into the opposed dead grate in the side of dead grate with side plate and with the opposed movable fire grate side plate in the side of movable fire grate, and at phase non-overlapping copies when the identical direction of direction that come and go to move with movable fire grate is seen, each dead grate that to cut apart removably is fixed on opposed dead grate one side respectively with side plate, the movable fire grate of each that will cut apart removably is fixed on adjacent dead grate with on the side plate with side plate simultaneously, and then is provided with small movable gap between movable grate is with side plate and movable grate.

Dead grate is fixed with side plate and dead grate, simultaneously movable fire grate and the dead grate that is adjacent are fixed with side plate, can carry out the assembling of side plate.

Dead grate is unloaded with side plate and dead grate in the below, unloads movable fire grate simultaneously with side plate and the dead grate side plate that is adjacent, and can carry out the decomposition of side plate.

Because side plate is divided into dead grate with side plate and movable fire grate side plate, so can easily carry out the assembling and the decomposition of component parts.

Preferably, be fixedly connected with and the opposed movable fire grate side plate of the movable fire grate in its downstream on side plate being fixed in dead grate on the dead grate.Do like this and can sequentially carry out dead grate is used side plate with side plate and movable fire grate assembling and decomposition.

Preferably, dead grate can link together by telescopic seam on the round moving direction of movable fire grate with side plate with side plate and movable fire grate with relatively moving.Do like this can prevent dead grate with side plate and movable fire grate with side plate to the left and right direction move mutually, realize connecting normally.

Preferably, add telescopic flame-proof sealing material at dead grate on side plate and the movable seam of fire grate with side plate.Do the sealing effectiveness that can improve between dead grate usefulness side plate and the movable fire grate usefulness side plate like this.

As mentioned above, can produce the effect of following excellence by the present invention.

Be positioned at dead grate interconnected and movable fire grate both sides and be fixed on side plate on dead grate one side possessing along the throughput direction of rubbish, be positioned at the sealing plate of side plate both sides, and be installed at side plate, between sealing plate and the refractory oven, in the staged stoker of flame-proof sealing material with sealing therebetween, since with described side plate be divided into roughly with the opposed dead grate in the side of dead grate with side plate and roughly with the opposed movable fire grate side plate in the side of movable fire grate, and at phase non-overlapping copies when the identical direction of direction that come and go to move with movable fire grate is seen, described each dead grate of cutting apart removably is fixed on opposed dead grate one side respectively with side plate, simultaneously the movable fire grate of described each that cut apart removably is fixed on adjacent dead grate with on the side plate with side plate, so can easily carry out the assembling and the apportioned effort of component parts.

Description of drawings

Fig. 1 is the overall side view of the staged stoker burner of the embodiment of the invention 1.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the stereogram that is used for the staged stoker of staged stoker burner.

Fig. 4 is the cutaway view of 4-4 arrow line among Fig. 3.

Fig. 5 is the cutaway view of 5-5 arrow line among Fig. 3.

Fig. 6 is the cutaway view of 6-6 arrow line among Fig. 3.

Fig. 7 is the cutaway view of 7-7 arrow line among Fig. 4.

Fig. 8 is the cutaway view of 8-8 arrow line among Fig. 6.

Fig. 9 is the cutaway view of 9-9 arrow line among Fig. 6.

Figure 10 is a vertical profile side view that amplifies expression with Fig. 4.

Figure 11 is the stereogram of fire grate body.

Figure 12 is the stereogram of grate frame.

Figure 13 is the stereogram of fire grate body and slide mass.

Figure 14 is for being provided with the vertical profile side view of the embodiment of the invention 2 of air duct on the side plate.

Figure 15 is the figure identical with Fig. 8 of the embodiment of the invention 2.

Figure 16 is the figure identical with Fig. 9 of the embodiment of the invention 2.

Figure 17 is the vertical profile side view of staged stoker in the past.

Figure 18 is the stereogram of staged stoker in the past.

The specific embodiment

Below by accompanying drawing embodiments of the present invention are described.

Fig. 1 is the overall side view of the staged stoker burner of the embodiment of the invention 1; Fig. 2 is the vertical view of Fig. 1; Fig. 3 is the stereogram that is used for the staged stoker of staged stoker burner; Fig. 4 is the cutaway view of 4-4 arrow line among Fig. 3; Fig. 5 is the cutaway view of 5-5 arrow line among Fig. 3; Fig. 6 is the cutaway view of 6-6 arrow line among Fig. 3; Fig. 7 is the cutaway view of 7-7 arrow line among Fig. 4; Fig. 8 is the cutaway view of 8-8 arrow line among Fig. 6; Fig. 9 is the cutaway view of 9-9 arrow line among Fig. 6; Figure 10 is a vertical profile side view that amplifies expression with Fig. 4; Figure 11 is the stereogram of fire grate body; Figure 12 is the stereogram of grate frame; Figure 13 is the stereogram of fire grate body and slide mass.

Staged stoker burner 1 is provided with as shown in Figures 1 and 2 successively: the rubbish feeding hopper 2 of supplying with rubbish; Predetermined amounts is carried the dust sending device 3 of rubbish; The dry stoker 4 that is used for garbage drying; The burning stoker 5 that is used for combustion refuse; The after-combustion stoker 6 that is used for after-combustion (second-time burning) rubbish; Discharge the ash discharge chute 7 of ashes; Be located at the hopper (ash discharge hopper) 8,9,10 of each stoker 4,5,6 below; Last interconnected and constitute the dead grate 11 and the movable fire grate 12 of each stoker 4,5,6 at rubbish throughput direction (right-hand among Fig. 1 and Fig. 2) A; Drive the drive unit 13,14,15 of each movable fire grate 12; And be located at connection wall body 16,17,18 between dust sending device 3 and each stoker 4,5,6.

Dust sending device 3 is an one-level pusher mode, is provided with push body 19 that can move on rubbish throughput direction A and the pressure cylinder 20 that makes its action.

Dry stoker 4 is the downward-sloping state configuration of 8 degree with approximate horizontal state, inclination angle.Burning stoker 5 and after-combustion stoker 6 dispose with level.

The hopper 8 of dry stoker 4 usefulness is 2 segmenteds.The hopper 9 of burning stoker 5 usefulness is preferably 2～4 segmenteds, is 4 segmenteds in this example.The hopper 10 of after-combustion stoker 6 usefulness is a single type.Thereby hopper 8,9,10 totals are made of 7 segmentations.

The drive unit 13,15 of dry stoker 4 and after-combustion stoker 6 usefulness respectively is 1.The drive unit 14 of burning stoker 5 usefulness is 2.

The drop of the connection wall body 16 between dust sending device 3 and the dry stoker 4 is 800mm.The drop of the connection wall body 17 between dry stoker 4 and the burning stoker 5 is preferably 0～800mm, is 800mm in this example.At drop is the occasion of 0mm, can remove connection wall body 17 dry stoker 4 directly is connected with burning stoker 5 stepless difference ground.The drop of the connection wall body 18 between burning stoker 5 and the after-combustion stoker 6 is preferably 0～500mm, is 500mm in this example.At drop is the occasion of 0mm, can remove to connect wall body 18 stoker 5 that will burn and directly be connected with after-combustion stoker 6 stepless difference ground.

Though not shown, respectively connect wall body 16,17,18 and be air-cooled structure.

Dry stoker 4, burning stoker 5 and after-combustion stoker 6 are respectively the staged stoker, present roughly the same structure.Fig. 3 to Fig. 9 only draw the burning stoker 5 latter half of.

The staged stoker of burning stoker 5 is by dead grate 11; Movable fire grate 12; Grate frame 21; Bogie 22; Stoker frame 23; Baffle 24; Side plate 25; Refractory oven 26; Diaphragm seal 27; Fire-resistant seal member 28 constitutes its major part.

Dead grate 11 and movable fire grate 12 are at fore-and-aft direction (rubbish throughput direction A, left and right directions among Fig. 1) interconnected, simultaneously, at left and right directions (laterally, above-below direction among Fig. 2) a plurality of stem for stem, a plurality of (among Fig. 3 being 12) fire grate is when left and right directions constitutes one-level dead grate 11 or movable fire grate 12 side by side, and such dead grate 11 and movable fire grate 12 have multistage (among Fig. 3 being 4 grades), establishes in stepped interlocking of fore-and-aft direction.Each fire grate 11,12 is with skewed being supported on the grate frame 21 of predetermined preceding elevation angle degree (25 degree).Movable fire grate 12 is relative fixed fire grate 11 and does the back and forth movement shape with predetermined stroke (range is 250mm).

Grate frame 21 is made of the movable grate frame 30 of the stationary furnace bedstead 29 that supports each dead grate 11 and each movable fire grate 12 of support, is rectangular cartridge type at left and right directions.Stationary furnace bedstead 29 is and equates with the progression of dead grate 11 and be located at its underpart, releasably carries left right a plurality of dead grates 11 side by side.Movable grate frame 30 is and equates with the movable progression of fire grate 11 and be located at its underpart, releasably carries left right a plurality of movable fire grate 12 side by side.

Bogie 22 is used to support each movable grate frame 30, is connected by the suitable connector 31 of pair of right and left in this example.

Stoker frame 23 is used in fixed support stationary furnace bedstead 29 at fore-and-aft direction support drive frame 22 movably, be positioned at the below of each dead grate 11 and each movable fire grate 12 in this example, be four frame shapes, when fixing the two ends, the left and right sides of each stationary furnace bedstead 29, with bogie 22 between establish guider 32 and bogie 22 and be provided with movably at fore-and-aft direction (be the place ahead elevation direction identical strictly speaking, down with) with the movable fire grate of each dead grate 11 and each 12.

Guider 32 is provided with: be located on the stoker frame 23 and be the guide plate 33 of two groups of pair of right and left, the front and back of triangular form roughly; Be located on the bogie 22 and can be around pair of right and left, front and back that transverse axis rotates two groups roller 34; Be located on the bogie 22 and be roughly triangular form, sliding-contact on stationary furnace bedstead 29 and prevent the sliding-contact plate 35 of two groups of pair of right and left, front and back that bogie 22 floats.

Thereby bogie 22 is by drive unit 14 (13,15) back and forth movement on fore-and-aft direction.

Drive unit 14 (13,15) is provided with: be located at the left and right sides bearing 36 on the stoker frame 23; The single axle 37 that can support rotationally around transverse axis on these bearings; Be attached to left and right sides lever arm 38 on these and single pressure cylinder arm 39; Be located at the left and right sides bar 40 between lever arm 38 and the bogie 22; Be located at the pressure cylinder (oil cylinder) 41 between pressure cylinder arm 39 and the stoker frame 23.

Baffle 24 releasably is located at the front side of stoker 23 and is engaged slidably with the most front-seat movable fire grate 12 through erecting bed 42, and is the same with each fire grate 11,12, a plurality of (Fig. 3 is 12) fire grate on left and right directions stem for stem.Be provided with connection wall body 18 (16,17) in the front side of erecting bed 42.

Side plate 25 is located at the both sides of dead grate 11 and movable fire grate 12 and is hermetically-sealed construction between refractory oven 26, be divided into roughly with the opposed dead grate in the side of dead grate 11 with side plate 43 and roughly with the opposed movable fire grate usefulness side plate 44 in the side of movable fire grate 12.Each dead grate is with when side plate 43 is on releasably being fixed in opposed separately dead grate 11, and each movable fire grate releasably is fixed in adjacent dead grate with on the side plate 43 with side plate 44.The medial surface of movable fire grate usefulness side plate 44 and the both ends of movable fire grates 12 at different levels are opposed with predetermined movable gap (0.5mm) C.

That is, to form side view be the upward roughly rectangle of length of rubbish throughput direction A to side plate 25 by dead grate fix with more than 44 staggered assemblings of side plate with side plate 43 and movable fire grate.

It is the shape of discoid body after the cut-off rule B bisection of almost diamond that dead grate is side view with side plate 44 with side plate 43 and movable fire grate.That is, see that from the direction identical non-overlapping copies ground is cut apart with the travel directions of movable fire grate 12.Movable fire grate is configured to only can move to the oblique upper along cut-off rule B with side plate 43 by the relative fixed fire grate with side plate 44.The sub-assembly of two side plates 43,44 of one group is configured to and can moves at the oblique above-below direction along cut-off rule B.

And each dead grate with side plate 43 as shown in Figure 8, releasably is fixed on the side of dead grate 11 respectively by construction bolt 45.Be arranged in each dead grate and use side plate 44 as shown in Figure 9, releasably be fixed on the dead grate adjacent respectively with on the side plate 43 with upstream side by connecting bolt 46 with the movable fire grate in the downstream (Fig. 6 right side) of side plate 43.

Each dead grate is Fig. 8, shown in Figure 9 elongated square with side plate 43 and movable fire grate with the front shape of side plate 44, these end faces are assembled by the so-called tube-in-tube structure (telescopic joint) of concavo-convex combination, can prevent moving mutually of left and right directions (left and right directions among Fig. 8 and Fig. 9).The joint of assembling can prevent the primary combustion leakage of air after telescopic fire-resistant seal members such as ceramic blanket (not having diagram) are set.

Diaphragm seal 27 is located between stoker frame 23 and stoker brace table 47 and the refractory oven 26, is tabular, and the bottom is installed on the stoker brace table 47 by connecting bolt 48.

Fire-resistant seal member 28 seals telescopically between side plate 25 and diaphragm seal 27 and the refractory oven 26, adopts ceramic blanket, varicosity fiber etc. to fill.

Each fire grate 11,12 is provided with: fire grate wall body 49; The slide mass 50 that releasably is provided with at its preceding side lower part; The bindiny mechanism 51 that the middle part of fire grate body 49 can be connected each other with decomposing; The snap fastener 52 that the back side lower part of each fire grate body 49 and grate frame 21 are releasably engaged.

Fire grate body 49 is made by the special heat resisting cast steel of excellences such as hear resistance and abrasion resistance or special heat-resisting cast iron etc., is provided with: be the open roughly rectangular case shape main body 53 of the inside side; Be located at main body 53 back quadrate parts and as the slot 54 of the part of snap fastener 52; The place ahead at slot 54 forms a plurality of fin 57 air duct 55, that establish perpendicular to the sky borehole wall 56; Be located on the two side 58 of main body 53 and as the connecting rod through hole 59 of the part of bindiny mechanism 51; Be formed at main body 53 front part and can load and unload the slide mass embeded slot 60 of the chimeric slide mass 50 in ground; Be formed at the upper portion of slide mass embeded slot 60 and as a plurality of nozzle bores 61 of the part of air duct 55; The air blow-off outlet 62 that is communicated with between the lower end, front side that is formed at main body 53 and the upper surface, the place ahead of slide mass 50 and by air duct 55 and air nozzle 61.

Be positioned in the fire grate body 49 both sides (with side plate 25 in abutting connection with) part as shown in Figure 5, the shape of two side 58 and connecting rod through hole 59 changes to some extent.

Slide mass 50 releasably is located at the preceding side lower part of fire grate body 49 and is engaged in the upper surface of the fire grate body 49 of prime slidably, be cross section convex roughly with horizontal plate and vertical plate, when the front end of horizontal plate extended to below the front end of fire grate body 49, vertical plate was embedded in the slide mass embeded slot 60 of fire grate body 49.

The material of slide mass 50 can reduce the abrasion of fire grate body 49 by using special heat resisting cast steel or the special heat-resisting cast iron softer slightly than the material of fire grate body 49.In this case, slide mass 50 can be changed to a certain degree the time in abrasion.

The horizontal wide length E of slide mass 50 is 1～5 times (integral multiple) of fire grate body 49 horizontal wide length F, is engaged in the upper surface of the fire grate body 49 of prime slidably by deadweight.The long more deadweight of this length increases more, and improves the conjugation grade of the fire grate body 49 of slide mass 50 and prime more, and the primary combustion air D of Guo Louing is just few more from here.

Because slide mass 50 releasably is located on the fire grate body 49, so, can not leak primary combustion air D from here even slide mass 50 abrasions also only descend to its below.

Bindiny mechanism 51 is provided with as Fig. 8 and shown in Figure 9: the connecting rod through hole 59 that is formed at 58 middle parts, fire grate body 49 two sides; Run through connecting rod (bolt) 63 wherein; Run through the pad 64 on it; Be combined on the nut 65 on the connecting rod 63.Be positioned at both sides fire grate body 49 connecting rod through hole 59 as shown in Figure 5, be the common hole of can not setting-in inserting, the connecting rod through hole 59 of fire grate body 49 in addition as shown in Figure 4, but be the breach hole that setting-in inserts.Being located at connecting rod 63 between outermost fire grate body 49 and the adjacent with it fire grate body 49 has only and connects this two length.Be located at connecting rod 63 between other a plurality of fire grate bodies 49 and have the length that two or more fire grate body 49 are linked together.That is, connecting rod 63 is divided into a plurality of on the horizontal cross direction of fire grate body 49.

Clamping close device 52, is provided with: be fixedly set in the engaging body 66 on the grate frame 21 to shown in Figure 13 as Figure 10; With the engaging body 66 cut apart and be can from grate frame 21 take off the shape setting cut apart the engaging body 67; Be located on the fire grate body 49 and be sticked in and engage body 66 and cut apart the slot 54 that engages body 67.

Engaging body 66 is located on the grate frame 21, be made by band steel, by the flat steel slightly shorter than grate frame 21 will be divided into central portion and both sides, the mode of simultaneously will the both sides except that central portion forwards giving prominence to its front side (upper right side among Figure 12) is welded on the upper surface of grate frame 21 and forms.

Cut apart the part of engaging body 67 by will engage body 66 and form, and releasably be installed on the grate frame 21, be positioned at the central portion of the horizontal cross direction that engages body 66 corresponding to the amplitude division of fire grate body 49.That is, the above-mentioned not band steel of central portion of welding is equivalent to cut apart engaging body 67, and engage body 66 with releasably being installed on the upper surface of siege 21 by (two) bolt in right amount in a straight line.It is bigger than the horizontal wide length F of fire grate body 49 to cut apart the horizontal wide length G that engages body 67.

Slot 54 is located at the back side lower part of fire grate body 49, and can laterally be sticked in movably the engaging body 66 and cut apart the engaging body 67 on, cut out the groove that is the L type that slightly stands upside down by back side lower part and form at fire grate body 49.

Engaging body 66 and cut apart engaging body 67 and slot 54 and allow each fire grate body 49 with respect to grate frame 21 traversing and some elevating movements of direction (horizontal cross direction) to the left and right stops other motion simultaneously.

Below, tell about its effect according to this structure.

The rubbish that stores in the rubbish feeding hopper 2 by dust sending device 3 with scheduled volume when throughput direction A supplies with and carries out drying by dry stoker 4, carry out after-combustion by after-combustion stoker 6 again after burning by the stoker 5 that burns.At this moment, supply with once combustion air D by the hopper under it 8,9,10 in the rubbish on each stoker 4,5,6.Thereby the rubbish on each stoker 4,5,6 carries out drying, burning, after-combustion continuously in constantly transferring, and the final ash that forms is discharged from the ash discharge chute 7 of after-combustion stoker 6 ends.

Each stoker is being installed at 4,5,6 o'clock, the engaging body 67 of cutting apart of snap fastener 52 is pulled down from grate frame 21, by inserting fire grate body 49 from here successively and traversing to the side, slot 54 is assembled with engaging body 66 engagings, simultaneously, cut apart engaging body 67 and be fastened on the slot 54 of last fire grate body 49 and by bolt 68 and be installed on the grate frame 21, last thus fire grate body 49 just is installed in the central portion of grate frame 21.And fire grate bodies 49 at different levels pass the connecting rod through hole 59 of each fire grate body 49 by the wind crotch 63 with connect mechanism 51 and connect by screwing of nut 65.This occasion is especially removed outermost fire grate body 49, because connecting rod through hole 59 is the breach hole, so after connecting rod 63 can being inlaid on this connecting rod through hole 59, connect by screwing nut 65.Assembling be successively from the downstream (right side of Fig. 1) upstream side carry out.

On the contrary, decomposing each stoker at 4,5,6 o'clock, when the connecting rod 63 from bindiny mechanism 51 screws off nut 65, pull down connecting rod 63 and remove the connection of each fire grate body 49 from connecting rod through hole 59.Thereafter, when the fire grate body 49 of cutting apart engaging body 67 and central portion of pulling down snap fastener 52 from grate frame 21 was taken away upward, other fire grate body 49 was shifted to central portion successively and is cut apart the spatial portion that engages body 67 and take away upward from pulling down.Decomposition successively from upstream side downstream side carry out.

When changing arbitrarily fire grate body 49, when this grade of pulling down the fire grate body 49 that need change cut apart engaging body 67, with directly over the fire grate body 49 of one-level steeve and its front end floated upward, identical during afterwards with decomposition, after the connection of having removed by bindiny mechanism 51, when taking away the fire grate body 49 of central portion, other fire grate body 49 is shifted to central portion successively and is removed, and finally pulls down the fire grate body 49 that will change.And installation is thereafter promptly finished replacing with above-mentioned opposite order.

Slide mass 50 releasably is located on the fire grate body 49, therefore only make fire grate body 49 steeve and relatively slide mass embedded grooves 60 just plug and can finish replacing.

Each stoker 4,5,6 is the configuration of approximate horizontal shape, therefore can reduce the device overall height.For example the overall height of burner 1 is compared with the type in the past of 125T/ day scale, can reduce about 2.5m, and then realizes the miniaturization of burner 1.

Dry stoker 4 is the downward-sloping shape configuration of 8 degree with the inclination angle of approximate horizontal shape, therefore can carry rubbish more reliably.

Because when the hopper 8 below the dry stoker 4 is made 2 segmenteds, the hopper 9 of burning stoker 5 belows is made 4 segmenteds, promptly on so-called rubbish throughput direction A, hopper 8,9,10 is segmented, distribute so can meet the air of combustion characteristics, and then realize the compartmentation that air is supplied with.

Because the movable fire grate 12 of dry stoker 4 and after-combustion stoker 6 is driven by the drive unit 13,15 of 1 platform independent respectively, simultaneously, the movable fire grate 12 of burning stoker 5 is driven by the drive unit 14 of 2 platform independent, so can form the fire grate type of drive of each combustion process being carried out segmentation, can freely control the thickness of waste layer and grieshoch by the stroke and the speed of each stoker 4,5,6 movable fire grate 12 are adjusted individually.

Since between dust sending device 3 and the dry stoker 4 by drop be 800mm be connected wall body 16 connections, so can block waste layer and improve the quantitative property of dust sending device 3.

Since between dry stoker 4 and the burning stoker 5 by drop be 800mm be connected wall body 17 connections, so can carry out the upset and the stirring of rubbish by drop.

Owing to be that the wall body 18 that is connected of 500mm connects by drop between burning stoker 5 and the after-combustion stoker 6, so can not fall and carry out rubbish and segment by will firing composition.

Because each connects wall body 16,17,18 is air-cooled structure, so can prevent adhering to of slag.

At each fire grate 11,12 when forwards elevation direction is done back and forth movement and rubbish held up, carry while stirring, must be thicker and with the height setting of fire grate 11,12 by big differential of overlapping to form of fire grate 11,12, therefore can carry out the upset of rubbish effectively and stir and obtain high whipping performance.Thus, the combustible component of rubbish contacts effectively with primary combustion air D, can form the high load capacity burning.

Because fire grate body 49 is provided with fin 57, so can improve radiating effect (rate of heat dissipation=3.8 of fire grate body 49; Rate of heat dissipation=area of dissipation ÷ heating surface area, suitable rate of heat dissipation are 3～4).The scaling loss of fire grate body 49 can be prevented thus and durability can be improved.

Because fire grate body 49 is provided with nozzle bore 61, so can keep suitable ventilation impedance (Δ P=100～150mmH ₂O), can not influence rubbish bed thickness, air supply equably.

Each fire grate body 49 is installed, is decomposed by bindiny mechanism 51 and snap fastener 52, simultaneously, because slide mass 50 is provided with on fire grate body 49 loading and unloading ground relatively, so be easy to carry out their replacing.Therefore can realize the simplification of maintenance operation.

Describe according to Figure 14 to Figure 16 with regard to embodiments of the invention 2 below.

Figure 14 is provided with the vertical profile side view of the embodiment of the invention 2 of air duct for side plate.Figure 15 is the figure identical with Fig. 8 of the embodiment of the invention 2.Figure 16 is the figure identical with Fig. 9 of the embodiment of the invention 2.

Embodiment 2 removes and forms air duct 69 carry out being different from embodiment 1 aspect air-cooled on side plate 25, and other are identical with embodiment 1.

Air duct 69 is formed on the side plate 25 and makes cooling air H circulation, making cooling air H circulation with rubbish throughput direction A rightabout, simultaneously, only is formed on the top of side plate 25.

Promptly, the dead grate that constitutes side plate 25 with side plate 43 and movable fire grate with all being hollow form outside the side plate of removing upstream side in the side plate 44 (among Figure 14 the dead grate of the leftmost side with side plate 43), be provided with the next door 70 that hollow space is separated up and down, simultaneously, along forming inlet 71 and outlet 72 in front and back with rubbish throughput direction A rightabout.

The side plate of upstream side (among Figure 14 the dead grate of the leftmost side with side plate 43) is hollow form, is forming inlet 71 on the front side, forms outlet 72 on downside respectively.

Adjacent front and back side plate 43,44 is communicated with adjacent outlet 72 respectively and enters the mouth 71, forms integrated.

Thereby,, form respectively in the front side (downstream) and be provided with the passage that inlet 71, rear side (upstream side) are provided with the series connection of outlet 72 as air duct 69.

On the inlet 71 of air duct 69 (among Figure 14 the movable fire grate of the rightmost side with the inlet 71 of side plate 44), connect the pressure fan (air cooling fan) 73 of supplying with cooling air H, simultaneously, in its way, be provided with the wind shelves 74 of regulating cooling air H quantity delivered.

The outlet 72 of air duct 69 (among Figure 14 the dead grate of the leftmost side with the outlet 72 of side plate 43) is connected in the hopper 8,9,10.

About wind shelves 74 corresponding left and right sides air ducts 69 are provided with two, the Temperature Detector 75 control transmission devices (motor) by detecting air themperature on air duct 69 final positions form the control to the cooling air H quantity delivered of air supply passage 69.

The temperature of the cooling air H outlet 72 of Temperature Detector 75 mensuration air ducts 69 (dead grate of the leftmost side outlet 72 of side plate 43 among Figure 14) near, control wind shelves 74 make temperature about 300 ℃.

Claims (4)

1. the fire grate of a staged stoker burner that is used for incinerator and the hermetically-sealed construction between the burner sidewall, it is characterized in that, possessing side plate, sealing plate, flame-proof sealing material, described side plate is positioned at along interconnected dead grate of the throughput direction of rubbish and movable fire grate both sides and is fixed on dead grate one side, described sealing plate is positioned at the side plate both sides, described flame-proof sealing material is installed at side plate, between sealing plate and the refractory oven, in the staged stoker that seals therebetween, below at described dead grate (11) and movable grate (12) is provided with: bogie (22) is fixed with the movable grate frame (30) that supports described movable grate (11) on it; Leg-of-mutton sliding-contact plate (35,35) is arranged on the front and back of upper surface one side of bogie (22), and the stationary furnace bedstead (29) that is contacted with supporting dead grate (11) is gone up and moved; Roller (34,34), it rotates the front and back that the earth's axis freely is bearing in lower surface one side of bogie (22); Guide plate (33) has the identical inclined plane of described sliding-contact plate (35) that gradient and described roller (34) roll; And drive unit (14), described bogie (22) is is only come and gone at a certain distance obliquely upward move; By being come and gone, moves bogie (22), and being come and gone, moves described movable grate (12), to be positioned at the both sides of described movable grate (11) and movable grate (12), and be fixed on side plate (43) on the dead grate (11) be divided into the opposed dead grate in the side of dead grate (11) with side plate (44) and with the opposed movable fire grate in the side of movable fire grate (12) with side plate (44), and from the identical direction (B) of the direction that come and go to move with movable fire grate (12) phase non-overlapping copies when seeing, described each dead grate of cutting apart removably is fixed on opposed dead grate (11) one sides respectively with side plate (43), simultaneously the movable fire grate of described each that cut apart removably is fixed on adjacent dead grate with on the side plate (43) with side plate (44), and then between described movable grate is with side plate (44) and movable grate (12), is provided with small movable gap (C).

2. the fire grate of the staged stoker burner that is used for incinerator according to claim 1 and the hermetically-sealed construction between the burner sidewall, it is characterized in that, be fixed in that dead grate on the dead grate (11) is fixedly connected with on side plate (43) and the opposed movable fire grate of the movable fire grate (12) in its downstream with side plate (44).

3. the fire grate of the staged stoker burner that is used for incinerator according to claim 1 and the hermetically-sealed construction between the burner sidewall, it is characterized in that dead grate can link together by telescopic seam with side plate (44) with side plate (43) and movable fire grate with relatively moving on the round moving direction of movable fire grate (12).

4. according to claim 1 or the fire grate of the 3 described staged stoker burners that are used for incinerator and the hermetically-sealed construction between the burner sidewall, it is characterized in that, add telescopic flame-proof sealing material (28) on side plate (43) and the movable seam of fire grate with side plate (44) at dead grate.

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