CN1320308C - Step motor-driven grate burniag device of garbage furnace - Google Patents

Abstract

The present invention relates to a step motor-driven grate burning device of a garbage furnace, and the total height of the step motor-driven grate burning device is lowered. A drying motor-driven grate, a burning motor-driven grate and a post-burning motor-driven grate are assembled into a row in the conveying direction of rubbish. Through a material hopper which is arranged below the drying motor-driven grate, the burning motor-driven grate and the post-burning motor-driven grate, primary burning air is transported from down side into the rubbish on the drying motor-driven grate, the burning motor-driven grate and the post-burning motor-driven grate, which enables the rubbish to be continuously burnt along with transporting. The drying motor-driven grate, the burning motor-driven grate and the post-burning motor-driven grate are arranged in a horizontal shape approximately, wherein the lower side of the drying motor-driven grate is provided with a two separation type material hopper, the lower side of the burning motor-driven grate is provided with a two-four separation type material hopper. Movable grates of the drying motor-driven grate and the post-burning motor-driven grate are respectively driven by an independent driving device, and the movable grate of the burning motor-driven grate is driven by two independent driving devices. The drying motor-driven grate and the burning motor-driven grate are connected by a connecting wall body, the drop height of which is 0 to 800mm, and the burning motor-driven grate and the post-burning motor-driven grate are connected by a connecting wall body, the drop height of which is 0 to 500.

Description

The staged stoker burner of incinerator

Technical field

The present invention relates to be used to burn improvement such as the staged stoker burner of the incinerator of municipal refuse etc.

Background technology

Usually, the staged stoker burner that is used for incinerator be provided with successively predetermined amounts carry rubbish to the dirt device; 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 therefore each stoker of this staged stoker burner exists the too high problem of device overall height to be the forward-lean state configuration along the rubbish throughput direction.

In view of the above problems, the present invention promptly is the motion that is used to deal with problems, and its problem is to provide a kind of staged stoker burner that can reduce the device overall height.

Summary of the invention

Staged stoker burner of the present invention be basically a kind of will be on the throughput direction of rubbish by dead grate and the movable interconnected dry stoker that forms of fire grate, the burning stoker, the after-combustion stoker is combined into row, hopper by being located at above-mentioned each stoker below will be carried the staged stoker burner that makes the incinerator that rubbish burns continuously while transmitting in the rubbish of primary combustion air from each stoker of direction down, it is characterized in that, with above-mentioned dry stoker, burning stoker and after-combustion stoker are the configuration of approximate horizontal shape, configuration 2 somatotype hoppers below dry stoker, simultaneously, below the burning stoker, dispose 2～4 somatotype hoppers, the movable fire grate of dry stoker and after-combustion stoker is driven by the drive unit of 1 platform independent respectively, the movable fire grate of burning stoker is driven by the drive unit of 2 platform independent, be that the wall body that is connected of 0～800mm connects by drop between dry stoker and the burning stoker, between burning stoker and the after-combustion stoker by drop be 0～500mm be connected the wall body connection.

Rubbish is supplied with on the rubbish throughput direction and by in the dry stoker drying, after the burning of burning stoker, is burnt by the after-combustion stoker again.At this moment, in the rubbish on each stoker, the primary combustion air is supplied with by the hopper of its below.Thereby the rubbish on each stoker carries out drying, burning, after-combustion continuously while transmitting, and finally becomes ash and discharges from the end of after-combustion stoker.

Because each stoker is the approximate horizontal state configuration, so can reduce the device overall height.

Because when the hopper below the dry stoker is made 2 somatotypes, the hopper of burning stoker below is made 2～4 somatotypes, promptly hopper has been done somatotype carefully at so-called rubbish flow direction, distribute so can meet the air of combustion characteristics, and then realize the compartmentation that air is supplied with.

Because when the movable fire grate of dry stoker and after-combustion stoker is driven by the drive unit of 1 platform independent respectively, the movable fire grate of burning stoker is driven by the drive unit of 2 platform independent, so can form the fire grate type of drive of each combustion process being carried out somatotype, can adjust individually by stroke and speed, freely control the thickness of waste layer and grieshoch the movable fire grate of each stoker.

Since between dry stoker and the burning stoker by drop be 0～800mm be connected wall body connection time, be that the wall body that is connected of 0～500mm connects by drop between burning stoker and the after-combustion stoker, so can be in the upset of carrying out rubbish by drop and stirring do not fall and carry out rubbish and segment by will firing composition.

Each dead grate and the preferably a plurality of fire grate bodies of each movable fire grate are laterally in parallel to be disposed, and is undertaken and can link together with decomposing by the connecting rod that is horizontally through each fire grate body the inside side.Do the assembling and the decomposition that are easy to each dead grate and each movable fire grate like this.

Preferably be fixed at the dead grate side plate of dead grate two side ends through each dead grate, simultaneously, the both ends of each movable fire grate be connected in the said fixing fire grate with the movable fire grate of side plate with the medial surface of side plate reserve predetermined movably relative with gap to.Do like this and can improve precision and dwindle movable gap as far as possible.

The fire grate system that is preferably formed as each dead grate and each movable fire grate becomes the open roughly rectangular case shape of the inside side, simultaneously, side-prominent in the inside of furnace roof wall a plurality of fin are set, be provided with the nozzle bore of primary combustion circulation of air at interior side's front part, simultaneously, side below leading section, releasably be embedded with the slide mass that contacts with the fire grate body upper surface slide that is positioned at the downstream, and then, be provided with the connecting rod through hole in the two side of central portion, and portion is provided with the slot that releasably is sticked on the grate frame in the wings.Doing like this can be in the ejection effect that improves fire grate body radiating effect and primary combustion air, is easy to carry out the loading and unloading to grate frame.

The refractory oven that is positioned at burning stoker both sides is preferably as the water-cooled sidewall.Do like this because of having reduced the wall surface temperature of main combustion zone, can prevent adhering to of slag.

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

On the throughput direction of rubbish with dead grate and the movable interconnected dry stoker that forms of fire grate, the burning stoker, the after-combustion stoker is assembled into row, hopper by being located at above-mentioned each stoker below will be carried in the rubbish of primary combustion air from each stoker of direction down the staged stoker burner that makes the incinerator that rubbish burns continuously while transmitting, because with above-mentioned dry stoker, burning stoker and after-combustion stoker are the configuration of approximate horizontal shape, the below of dry stoker is disposing 2 somatotype hoppers, simultaneously, below the burning stoker, dispose 2～4 somatotype hoppers, the movable fire grate of dry stoker and after-combustion stoker is driven by the drive unit of 1 platform independent respectively, the movable fire grate of burning stoker is driven by the drive unit of 2 platform independent, when by drop being being connected wall body and connecting of 0～800mm between dry stoker and burning stoker, between burning stoker and after-combustion stoker by drop be 0～500mm be connected the wall body connection.Therefore can reduce the device overall height.

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 carry rubbish to dirt device 3; 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 to the connection wall body 16,17,18 between dirt device 3 and each stoker 4,5,6.

To dirt device 3 is 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 somatotypes.The hopper 9 of burning stoker 5 usefulness is preferably 2～4 somatotypes, is 4 somatotypes 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 somatotypes.

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.

Drop to the connection wall body 16 between dirt 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 25; 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 relative with the side of dead grate 11 to dead grate with side plate 43 and roughly with the side of movable fire grate 12 relatively to movable fire grate usefulness side plate 44.Each dead grate with side plate 43 releasably be fixed in separately relatively to dead grate 11 in, each movable fire grate releasably is fixed on the adjacent dead grate usefulness side plate 43 with side plate 44.Movable fire grate with the both ends of the medial surface of side plate 44 and movable fire grates 12 at different levels with predetermined movable gap (0.5mm) C relative to.

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 banner length E of slide mass 50 is 1～5 times (integral multiple) of fire grate body 49 banner 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 banner 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 banner side 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 banner length F of fire grate body 49 to cut apart the banner 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 (banner 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 to dirt 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 amount 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 somatotypes, the hopper 9 of burning stoker 5 belows is made 4 somatotypes, 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 somatotype, 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.

Because to being that the wall body 16 that is connected of 800mm connects by drop between dirt device 3 and the dry stoker 4, so can block waste layer and raising quantitative property to dirt 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 staged stoker burner of an incinerator, throughput direction at rubbish will be by dead grate and the movable interconnected dry stoker that forms of fire grate, the burning stoker, the after-combustion stoker is combined into row, from descending to carry in the rubbish on each stoker of direction rubbish is burnt continuously while transmitting the primary combustion air by the hopper of being located at described each stoker below, it is characterized in that, with described dry stoker, burning stoker and after-combustion stoker are the configuration of approximate horizontal shape, configuration 2 somatotype hoppers below dry stoker, simultaneously, below the burning stoker, dispose 2～4 somatotype hoppers, the movable fire grate of dry stoker and after-combustion stoker is driven by the drive unit of 1 platform independent respectively, the movable fire grate of burning stoker is driven by the drive unit of 2 platform independent, between dry stoker and the burning stoker by drop be 0～800mm be connected the wall body connection, between burning stoker and the after-combustion stoker by drop be 0～500mm be connected the wall body connection, be provided with the dead grate side plate in the dead grate two side ends, and this dead grate is fixed on each dead grate with side plate, and, be connected with movable fire grate side plate at described dead grate on side plate, this movable fire grate with the medial surface of side plate and the both ends of each movable fire grate reserve predetermined movably relative with gap to.

2. the staged stoker burner of incinerator according to claim 1, it is characterized in that, the structure of each dead grate and each movable fire grate is with the configuration laterally in parallel of a plurality of fire grate bodies, can link together by the connecting rod that is horizontally through each fire grate body the inside side simultaneously with decomposing.

3. the staged stoker burner of incinerator according to claim 1, it is characterized in that, the fire grate system that forms each dead grate and each movable fire grate is become the open roughly rectangular case shape of the inside side, simultaneously, side-prominent in the inside of furnace roof wall a plurality of fin are set, be provided with the nozzle bore of primary combustion circulation of air at interior side's front part, simultaneously, side below leading section, releasably be embedded with the slide mass that contacts with the fire grate body upper surface slide that is positioned at the downstream, and then, be provided with the connecting rod through hole in the two side of central portion, and portion is provided with the slot that releasably is sticked on the grate frame in the wings.

4. according to the staged stoker burner of each described incinerator in the claim 1 to 3, it is characterized in that the refractory oven that will be positioned at burning stoker both sides is as the water-cooled sidewall.

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