CN204922951U - Biomass combustion stove device - Google Patents
Biomass combustion stove device Download PDFInfo
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- CN204922951U CN204922951U CN201520548683.4U CN201520548683U CN204922951U CN 204922951 U CN204922951 U CN 204922951U CN 201520548683 U CN201520548683 U CN 201520548683U CN 204922951 U CN204922951 U CN 204922951U
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Abstract
The utility model discloses a biomass combustion stove device, including furnace body and biomass ash pocket type blowback dust collector, wherein, biomass ash pocket type blowback dust collector links to each other with the pipe of discharging fume: the plastic width -lock type single -layer sealed packing case comprises a casin. Supporting rack and filter bag in the box, the filter bag blind end is fixed on the supporting rack, and the box top is provided with exhaust duct, and the collection fill that separates through the card that has the through -hole between the bottom half, the open end of filter bag is fixed and is communicate on the card and with the through -hole, collects the bottom of fighting and is provided with row ash mouth, discharges fume and manages and collect the lateral wall intercommunication of fighting, including the blowback device of anti -blow machine and blowback pipeline, the blowback pipeline is used for connecting anti -blow machine air outlet and box top, be equipped with the fluidized -bed combustion ware in the furnace body, the flue gas gets into the filter bag from the furnace body discharge and filters, has guaranteed the separation of flue gas with the dust, simultaneously, removes dust through regular blowback, guarantees the filter effect of filter bag, avoids the filter bag scaling loss to the continuous steady operation of assurance equipment reduces maintenance cost and work load.
Description
Technical field
The utility model relates to biomass boiler equipment technical field, particularly a kind of biomass combustion furnace apparatus.
Background technology
Biomass boiler uses clean energy resource as fuel, as stalk, wood chip, vinasse etc. can utilize as biomass fuel, to substitute the conventional fuels such as existing timber, coal, natural gas; reach reduction operating cost; discharge will be lacked, the object of protection of the environment, although relative to the boiler using conventional fuel; biomass combustion furnace apparatus discharge capacity is less; pollutant is few, but in flue gas, still can be mingled with flue dust, contaminated environment; therefore, must filter it before flue gas is discharged.
In prior art, biomass combustion furnace apparatus generally uses biomass ash bag deduster dedusting, dust is delayed at the outer surface of filter bag, along with filter bag surface dust constantly increases, deduster inlet outlet pressure differential also rises thereupon, now need to carry out deashing process to filter bag, but, the afterbody flue dust that biomass combustion furnace apparatus produces has stronger cohesiveness, and particle diameter is little, quality is light, be adsorbed on filter bag and be difficult to fall, existing soot cleaning system DeGrain, running resistance is increased, the problem that dust arrestment rate declines just is there is after causing deduster to run a period of time, cause boiler load lower, even filter bag scaling loss, the continuous reliability service of influential system, common solution changes filter bag in such cases, but this causes larger financial burden to enterprise, in addition, existing biomass fuel is in static state in combustion, be difficult to fully contact with air, easy burning is insufficient, cause producing a large amount of flue dust, which in turns increases the work load of biomass ash bag deduster.
Therefore, how a kind of biomass combustion furnace apparatus is provided, make it effectively can filter flue gas before being discharged by flue gas, extend the service life of deduster simultaneously, can the operation of continous-stable, reduce maintenance cost and workload, become the important technological problems that those skilled in the art are urgently to be resolved hurrily.
Utility model content
In view of this, the utility model provides a kind of biomass combustion furnace apparatus, makes it effectively can filter flue gas before being discharged by flue gas, extend the service life of deduster simultaneously to reach, can the operation of continous-stable, reduce the object of maintenance cost and workload.
For achieving the above object, the utility model provides following technical scheme:
A kind of biomass combustion furnace apparatus, comprising:
Body of heater, is provided with smoke exhaust pipe, feed arrangement and boiling burner, and the discharging opening of described feed arrangement is communicated with the burner hearth of described body of heater; Boiling burner to be arranged in described burner hearth of the furnace body and to be positioned at the below of described discharging opening, comprise inner casing, shell and air blast, described inner casing and described shell are arranged in described body of heater, described inner casing is nested in described shell and also and between described shell forms air cavity, the sidewall of described inner casing offers multiple pore, described shell is provided with ash releasing tube and blast pipe, described blast pipe one end is communicated with described air cavity, and the other end is connected with described blower outlet;
Biomass ash pocket type back blowing dust removal device, comprising:
Casing;
Be arranged on the bearing support in described casing and filter bag, the blind end of described filter bag is fixed on described bearing support, and described casing top is provided with discharge duct;
The collection bucket be connected with described bottom half, card by having through hole between described collection bucket and described casing separates, the openend of described filter bag to be fixed on described card and to be communicated with described through hole, the bottom of described collection bucket is provided with ash discharging hole to be opened/closed, and described smoke exhaust pipe is communicated with the sidewall of described collection bucket;
Back-blowing device, comprises back blowing machine and the first blowback pipeline, and described first blowback pipeline one end is connected with described back blowing machine air outlet, and the other end is connected with described casing top.
Preferably, the tapering of described collection bucket is 60 ° ~ 75 °.
Preferably, described discharge duct and described first blowback pipeline are provided with valve near one end of described casing.
Preferably, described collection bucket bottom ash discharging hole place is provided with cross ash-valve.
Preferably, described discharge duct is communicated with the inlet scoop of described back blowing machine and air-introduced machine by threeway respectively away from one end of described casing, is provided with inlet valve between described threeway and described back blowing machine and described air-introduced machine.
Preferably, described back-blowing device also comprises the second blowback pipeline, and described second blowback pipeline one end is communicated with the air outlet of described back blowing machine, and the other end is communicated with the sidewall of described casing.
Preferably, described feed arrangement comprises hopper and conveying worm, and the discharging opening of described conveying worm is communicated with the burner hearth of described body of heater, and described hopper comprises feeding-passage and heat exchanging part, feeding-passage has import and outlet, and described outlet is communicated with described conveying worm feeding mouth; Described heat exchanging part is wrapped in the outside of described feeding-passage, is provided with gas approach and exhanst gas outlet, and described gas approach is communicated with described discharge duct.
Preferably, the bottom near described conveying worm in described feeding-passage is provided with filtering device, and described filtering device comprises filter net device and magnet filter.
Preferably, the discharging opening of described feed arrangement is provided with fireproof tempering device, described fireproof tempering device comprises lifting portion and cover plate, described lifting portion is hollow and two ends all have the tubular of opening, its one end is communicated with described feed arrangement discharging opening, the other end is hinged with described cover plate, and described lifting portion is inclined upwardly and meets 30 °≤α≤50 ° with the angle α of horizontal plane.
Preferably, the angle β of described feed arrangement and horizontal plane meets 8 °≤β≤15 °, and described lifting portion tilts upward away from the opening of one end of described feed arrangement, and the angle γ of its place plane and described horizontal plane meets 30 °≤γ≤50 °.
As can be seen from technique scheme, the biomass combustion furnace apparatus that the utility model provides, comprises body of heater and biomass ash pocket type back blowing dust removal device, wherein, body of heater is provided with smoke exhaust pipe, feed arrangement and boiling burner, the discharging opening of feed arrangement is communicated with the burner hearth of body of heater, boiling burner to be arranged in burner hearth of the furnace body and to be positioned at the below of discharging opening, comprise inner casing, shell and air blast, inner casing and shell are arranged in body of heater, inner casing is nested also and between shell forms air cavity in the enclosure, the sidewall of inner casing offers multiple pore, shell is provided with ash releasing tube and blast pipe, blast pipe one end is communicated with air cavity, and the other end is connected with blower outlet, biomass ash pocket type back blowing dust removal device comprises: casing, be arranged on the bearing support in casing and filter bag, the blind end of filter bag is fixed on bearing support, and casing top is provided with discharge duct, the collection bucket be connected with bottom half, the card by having through hole between collection bucket and casing separates, and the openend of filter bag to be fixed on card and to be communicated with through hole, and the bottom of collection bucket is provided with ash discharging hole to be opened/closed, and smoke exhaust pipe is communicated with the sidewall of collection bucket, comprise the back-blowing device of back blowing machine and the first blowback pipeline, first blowback pipeline one end is connected with back blowing machine air outlet, and the other end is connected with casing top, in use, combustion residual air containing biomass ash enters collection bucket and the filter bag inside entered in casing of rising through boiler exhaust gas pipe, through sock filtration, flue gas is separated with wherein suspended biomass ash, biomass ash is by detention or the inside being attached to filter bag, finally fall into collection bucket, the discharge duct of flue gas through being connected with casing through filter bag is discharged, when after deduster work a period of time, the biomass ash of attachment in filter bag gets more and more, flue gas is also just increasing through the resistance of filter bag, at this moment by back-blowing device, regular blowback cleaning is carried out to filter bag, the biomass ash adhered in filter bag is purged, ensure the normal operation of biomass combustion furnace apparatus, as can be seen here, above-mentioned biomass combustion furnace apparatus, flue gas enters biomass ash pocket type back blowing dust removal device and filters after body of heater discharge, ensure that the effective filtration to flue gas, simultaneously, by regular blowback dedusting, the problem that filter bag dust arrestment rate declines can be avoided, ensure the filter effect of filter bag, avoid filter bag scaling loss, thus ensure the continuous and steady operation of dust arrester and biomass combustion furnace apparatus, reduce maintenance cost and workload, in addition, the dust arrester filtered is carried out relative to using outer surface in prior art, the inner surface of filter bag is used to filter, the first bag filtration after filtration of flue gas contacts casing again, flue gas containing biomass ash can not be caused the corrosion at casing top, long service life, use cost is low, carry out except regular blowback cleaning except increasing above-mentioned back-blowing device to filter bag, also in burner hearth of the furnace body, be provided with boiling burner, during work, the thrust of mixing merga pass air-flow to boiling burner feeding air and biomass fuel by air blast makes biomass fuel seethe in boiling burner, impels it fully to mix with air, ensures Thorough combustion, avoid coking on the one hand, can flue dust be reduced on the other hand, reduce the work load of filter bag, extend working time.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of biomass ash pocket type back blowing dust removal device in biomass combustion furnace apparatus in the utility model embodiment;
Fig. 2 is biomass combustion furnace apparatus chamber structure schematic diagram in the utility model embodiment;
Fig. 3 is the structural representation of hopper in biomass combustion furnace apparatus in the utility model embodiment;
Fig. 4 is the structural representation of filtering device in biomass combustion furnace apparatus in the utility model embodiment;
Fig. 5 is the structural representation of fireproof tempering device in biomass combustion furnace apparatus in the utility model embodiment.
Detailed description of the invention
The utility model provides a kind of biomass combustion furnace apparatus, makes it effectively can filter flue gas before being discharged by flue gas, extend the service life of deduster simultaneously to reach, can the operation of continous-stable, reduces the object of maintenance cost and workload.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of biomass combustion furnace apparatus in the utility model embodiment; Fig. 2 is biomass combustion furnace apparatus chamber structure schematic diagram in the utility model embodiment.
A kind of biomass combustion furnace apparatus that the utility model provides, comprises body of heater and biomass ash pocket type back blowing dust removal device.
Wherein, body of heater is provided with smoke exhaust pipe 13, feed arrangement and boiling burner, the discharging opening of feed arrangement is communicated with the burner hearth of body of heater; Boiling burner to be arranged in burner hearth of the furnace body and to be positioned at the below of discharging opening, comprise inner casing 19, shell 20 and air blast 23, inner casing 19 and shell 20 are arranged in body of heater, inner casing 19 is nested in shell 20 and also and between shell 20 forms air cavity, the sidewall of inner casing 19 offers multiple pore 18, shell 20 is provided with ash releasing tube 21 and blast pipe 22, blast pipe 22 one end is communicated with air cavity, and the other end is connected with air blast 23 air outlet; Biomass ash pocket type back blowing dust removal device comprises casing 1, bearing support 4, filter bag 3, collection bucket 12 and back-blowing device, and casing 1 mainly plays a part to support its upper-part; Bearing support 4 and filter bag 3 are arranged in casing 1, and the blind end of filter bag 3 is fixed on bearing support 4, and casing 1 top is provided with discharge duct 6; Collection bucket 12 is connected with bottom casing 1, card 2 by having through hole between collection bucket 12 and casing 1 separates, the openend of filter bag 3 to be fixed on card 2 and to be communicated with through hole, and the bottom of collection bucket 12 is provided with ash discharging hole to be opened/closed, and smoke exhaust pipe 13 is communicated with the sidewall of collection bucket 12; Back-blowing device comprises back blowing machine 10 and first blowback pipeline 7, first blowback pipeline 7 one end is connected with back blowing machine 10 air outlet, and the other end is connected with casing 1 top.
Compared with prior art, the biomass combustion furnace apparatus that the utility model provides, in use, combustion residual air containing biomass ash enters collection bucket 12 and filter bag 3 inside entered in casing 1 of rising through boiler exhaust gas pipe 13, filtering through filter bag 3 makes flue gas be separated with wherein suspended biomass ash, biomass ash, by detention or the inside being attached to filter bag 3, finally falls into collection bucket 12, and the discharge duct 6 of flue gas through being connected with casing 1 through filter bag 3 is discharged, when after deduster work a period of time, the biomass ash of attachment in filter bag 3 gets more and more, flue gas is also just increasing through the resistance of filter bag 3, at this moment by back-blowing device, regular blowback cleaning is carried out to filter bag 3, the biomass ash of attachment in filter bag 3 is purged, ensure the normal operation of biomass combustion furnace apparatus, as can be seen here, above-mentioned biomass combustion furnace apparatus, flue gas enters biomass ash pocket type back blowing dust removal device and filters after body of heater discharge, ensure that the effective filtration to flue gas, simultaneously, by regular blowback dedusting, the problem that filter bag 3 dust arrestment rate declines can be avoided, ensure the filter effect of filter bag 3, avoid filter bag 3 scaling loss, thus ensure the continuous and steady operation of dust arrester and biomass combustion furnace apparatus, reduce maintenance cost and workload, in addition, the dust arrester filtered is carried out relative to using outer surface in prior art, the inner surface of filter bag 3 is used to filter, flue gas first filters through filter bag 3 and contacts casing 1 again, flue gas containing biomass ash can not be caused the corrosion at casing 1 top, long service life, use cost is low, carry out except regular blowback cleaning except increasing above-mentioned back-blowing device to filter bag, also in burner hearth of the furnace body, be provided with boiling burner, during work, the thrust of mixing merga pass air-flow to boiling burner feeding air and biomass fuel by air blast 23 makes biomass fuel seethe in boiling burner, impels it fully to mix with air, ensures Thorough combustion, avoid coking on the one hand, can flue dust be reduced on the other hand, reduce the work load of filter bag, extend working time.
Collection bucket 12 can adopt various shape, and in the utility model embodiment, build bridge in collection bucket 12 in order to avoid biomass ash and block, the tapering of collection bucket 12 is 60 ° ~ 75 °.
In order to avoid in filtration smoke evacuation process, flue gas enters the first blowback pipeline 7, avoid blowback air-flow to enter discharge duct 6 in blowback process simultaneously, in the utility model embodiment, discharge duct 6 and the first blowback pipeline 7 are provided with valve 5 near one end of casing 1, like this, one of them valve 5 can be closed, filter to avoid smoke evacuation and recoil and mutually disturb, ensure that the smoke evacuation of biomass combustion furnace apparatus is filtered and normally carrying out of recoiling.
In order to optimize technique scheme further, in the utility model embodiment, collection bucket 12 bottom ash discharging hole place is provided with cross ash-valve 11.
In the utility model embodiment, for the ease of the discharge of flue gas in discharge duct 6, discharge duct 6 is connected with air-introduced machine 8 away from one end of casing 1.
Other connected mode can certainly be adopted, such as in the another kind of embodiment of the utility model, in order to avoid introducing new dust in blowback process, discharge duct 6 is communicated with the inlet scoop of back blowing machine 10 and air-introduced machine 8 by threeway respectively away from one end of casing 1, inlet valve 9 is provided with between threeway and back blowing machine 10 and air-introduced machine 8, like this in blowback process, open the inlet valve 9 between threeway and back blowing machine 10, just the waste gas through filtering can be led back in casing 1 and carry out blowback, avoid the secondary pollution of filter bag 3, ensure that the filter effect of filter bag 3.
In the middle of actual use procedure, filter bag 3 can have certain length usually, first blowback pipeline 7 is arranged on the top of casing 1, be merely able to carry out blowback to the blind end from filter bag 3, the remainder of filter bag 3 can to obtain strong purging, reverse gas cleaning poor effect, therefore, in order to optimize technique scheme further, in the utility model embodiment, back-blowing device also comprises the second blowback pipeline, second blowback pipeline one end is communicated with the air outlet of back blowing machine 10, the other end is communicated with the sidewall of casing 1, like this, in side, blowback is carried out to filter bag 3 by the second blowback pipeline, strong purging can be carried out away from the part of Self-Closing end to filter bag 3, improve deashing dust removing effects, ensure the filter effect of filter bag 3.Preferably, the second blowback pipeline is provided with many, is uniformly distributed around casing 1.
Further, in the utility model embodiment, the second blowback pipeline is provided with pulse valve.
Multiple pore 18 can by any aligned transfer, in the utility model embodiment, in order to ensure that biomass fuel can be stirred uniformly in boiling burner, pore 18 is uniformly distributed around inner casing 19 circumference, other arrangement mode can certainly be adopted, such as multiple pore 18 is combined into one group, and many groups are uniformly distributed etc. around inner casing 19 circumference.
Inner casing 19 mainly plays the effect holding biomass fuel, it can adopt various shape, such as back taper, rectangle, square etc., but when adopting back taper, easily biomass fuel is piled up bottom inner casing 19, cause its burning insufficient, and adopt rectangle, during the shapes such as square, be unfavorable for that air-flow drives biomass fuel to seethe, therefore, in order to optimize technique scheme further, in the utility model embodiment, inner casing 19 is in reverse frustoconic, like this, it is plane bottom inner casing 19, the accumulation of biomass fuel can not be caused as inverted cone-shaped structure, between its sidewall and horizontal plane, there is angle simultaneously, the air-flow that air blast 23 can be made to send into enters inner casing 19 with the angle tilted upward, thus reach the object fully driving biomass fuel to seethe.
In order to ensure in boiling burner that biomass fuel everywhere fully can both mix with air, in the utility model embodiment, blast pipe 22 is provided with multiple, be uniformly distributed around shell 20, in the course of the work, biomass fuel everywhere can be made in boiling burner to seethe all fully mix with air, ensure in boiling burner that biomass fuel combustion speed is everywhere basically identical, and can be fully burned.
The lime-ash formed after burning must be cleared up timely, when shell 20 interior bottom wall is level, lime-ash can fly away each corner dropping to shell 20 interior bottom wall, cleaning in-furnace dust slag can become comparatively difficulty, workload is larger, therefore, in the utility model embodiment, shell 20 interior bottom wall is formed horizontal by 3 ~ 10 ° of downward-sloping inclined-planes, bottom ash releasing tube 21 and shell 20, the opening of connectivity part is arranged on the minimum point of shell 20 interior bottom wall, like this, due to shell 20 interior bottom wall is set to inclined-plane, lime-ash can move to ash releasing tube 21 place under the effect of self gravitation, the cleaning being convenient to lime-ash in body of heater is discharged, improve operating efficiency.
In order to ensure the temperature in body of heater, ash releasing tube 21 place generally all can arrange capping, but generally, capping is all be connected with ash releasing tube 21 by bolt, when ash discharge, need installing/dismounting, this adds increased the working strength of operating personnel, therefore, in order to further optimize technique scheme, in the utility model embodiment, ash releasing tube 21 is connected with the first capping away from one end of shell 20 by the first flexible strip, first flexible strip bends and is used for making the first capping keep closed state to ash releasing tube 21 in the prestressing state to closed direction, by the first flexible strip, ash releasing tube 21 and the first capping are coupled together, when lime-ash is fewer, because the first flexible strip is in prestressing state, lime-ash can not wash the first capping open, pile up in the first capping place, along with the carrying out of burning, lime-ash is cumulative, weight is increasing, when buildup of ash is to time a certain amount of, just can wash the first capping open, Self-discharged body of heater, so the automatic removing dust of biomass ebullition burner is achieved, greatly reduce the working strength of operating personnel.
In the use procedure of boiler, the lime-ash formed after having burning unavoidably flies away the bottom of body of heater, and for the ease of the discharge of bottom of furnace body lime-ash, in the utility model embodiment, bottom of furnace body is provided with ash discharging hole.Preferably, furnace interior diapire is formed horizontal by 3 ~ 10 ° of downward-sloping inclined-planes, ash discharging hole is arranged on the minimum point of furnace interior diapire, further, ash discharging hole is connected with the second capping by the second flexible strip, and the second flexible strip bends and is used for making the second capping keep closed state to ash discharging hole in the prestressing state to closed direction.Identical with the ash releasing tube 21 of boiling burner, body of heater ash discharging hole is also connected with the second capping by the second flexible strip, and its effect is also the automatic removing dust realizing body of heater.
The diameter of pore 18 has very important impact for the boiling effect of biomass fuel in boiling burner, it can adjust within the specific limits according to the difference of intake, pore 18 diameter is excessive, easily cause stream pressure less, be difficult to biomass fuel is fully seethed with excitement, pore 18 diameter is too small, be difficult to again provide sufficient air, therefore, in the utility model embodiment, the diameter of pore 18 is 2mm ~ 4mm, the pore 18 of this size, the pressure of air-flow can either be ensured, sufficient air can be provided again to mix with biomass fuel, preferably, the diameter of pore 18 is specially 3mm.
Feed arrangement can adopt various structures, such as ribbon conveyer, chain-linked conveyer etc., in the utility model embodiment, refer to Fig. 3, Fig. 3 is the structural representation of hopper in biomass combustion furnace apparatus in the utility model embodiment, feed arrangement comprises hopper 14 and conveying worm 15, the discharging opening of conveying worm 15 is communicated with the burner hearth of body of heater, hopper 14 comprises feeding-passage 1401 and heat exchanging part, feeding-passage 1401 has import and outlet, and outlet is communicated with conveying worm 15 feeding mouth; Heat exchanging part is wrapped in the outside of feeding-passage 1401, and be provided with gas approach and exhanst gas outlet, gas approach is communicated with discharge duct; Conveying worm 15, while conveying, can stir biomass fuel, be broken up by the fuel wherein lumpd, can reduce the generation of coking phenomenon in combustion process to a certain extent.
In use, biomass fuel enters feeding-passage 1401 from charging aperture, and fall along feeding-passage 1401, in dropping process, with the boiler smoke generation heat exchange in the heat exchanging part be wrapped in outside feeding-passage 1401, the high-temperature flue gas of being discharged by boiler and biomass fuel carry out heat exchange, oven dry heating is carried out to biomass fuel, it is made to catch fire easily, remove moisture content, sufficient combustion, the generation of coking phenomenon can be avoided, meanwhile, flue-gas temperature reduces, heat recovery, the preheating of biomass fuel contributes to the raising of boiler hearth temperature, and then improve the thermal efficiency of boiler.
Heat exchanging part can adopt various structures, in the utility model embodiment, heat exchanging part comprises housing 1402 and fin 1403, wherein, housing 1402 is arranged on outside feeding-passage 1401, form heat exchanging interlayer between housing 1402 and feeding-passage 1401, gas approach and exhanst gas outlet are all arranged on housing 1402; Fin 1403 has multiple, staggered is arranged in heat exchanging interlayer, like this, flue gas is entering after in radiating part, due to the fin 1403 be crisscross arranged, the flowing velocity of flue gas can be effectively reduced, make it to carry out sufficient heat exchange with the biomass fuel in feeding-passage 1401, improve the utilization ratio to fume afterheat.
In order to avoid scattering and disappearing of heat, in the utility model embodiment, the outer wall of housing 1402 being provided with heat-insulation layer, by arranging heat-insulation layer, the loss that fume afterheat is brought to external radiation by housing 1402 can being reduced, improve the utilization rate of fume afterheat; Heat-insulation layer can adopt multiple material to make, such as, and asbestos fibre heat-insulation layer or fiberglass insulation.
The gas approach of heat exchanging part can directly be communicated with the smoke exhaust pipe of boiler, and also can be communicated with the smoke exhaust pipe of boiler by air-supply arrangement, in the utility model embodiment, in order to raising efficiency, gas approach is connected by air-introduced machine with discharge duct.
In order to avoid the harmful substance heat exchanging portion in flue gas causes corrosion at housing 1402 and fin 1403, affect the service life of heat exchanging part, in the utility model embodiment, gas approach is provided with filtrating equipment of flue gas.
Feeding-passage 1401 can adopt various structures, such as straight-tube shape etc., in the utility model embodiment, in order to improve heat exchange efficiency, feeding-passage 1401 have employed three stage structure, comprise the inducer be connected successively, middle diffuser and converging portion, the diameter of middle diffuser is greater than inducer diameter, converging portion is reduced diameter from the one end be connected with middle diffuser, like this, in the dropping process of biomass fuel, the middle diffuser that diameter is larger is entered after inducer, biomass fuel can be made fully to scatter, make the pre-heating drying of biomass fuel more thorough, then, biomass fuel enters boiler furnace burning after converging portion converges.
Biomass fuel too fast meeting of falling in feeding-passage 1401 causes with flue gas heat exchange insufficient, pre-heating drying effect is undesirable, therefore, in order to optimize technique scheme further, in a kind of embodiment of the utility model, the inwall of middle diffuser is multiple to the centroclinal downward buffer board of middle diffuser every being crisscross arranged between the upper and lower, like this, what biomass fuel can replace in dropping process falls on each buffer board, the falling speed of biomass fuel can be effectively reduced, make it to carry out sufficient heat exchange if having time with flue gas, improve the utilization rate of fume afterheat.
Certainly, above-mentioned fuel buffer unit also can adopt other structure, and such as, in the another kind of embodiment of the utility model, the inwall of middle diffuser is provided with the slideway under screw, ways-end is towards converging portion.
Preferably, in order to further improve the drying effect of biomass fuel pre-heating drying device, in the utility model embodiment, the top of middle diffuser is provided with blower fan, the air circulation in middle diffuser can be strengthened by blower fan, further improve the drying effect of biomass fuel.
Bulk in biomass fuel and irony impurity easily cause coking and the generation of the phenomenon such as to get stuck, harmful effect is brought to the normal use production of biomass combustion device, therefore, in order to optimize technique scheme further, in the utility model embodiment, refer to Fig. 4, Fig. 4 is the structural representation of filtering device in biomass combustion furnace apparatus in the utility model embodiment, bottom near conveying worm 15 in feeding-passage 1401 is provided with filtering device, and filtering device comprises filter net device 24 and magnet filter 25.
By installing filter net device 24 and magnet filter 25 in hopper 14 additional, can when charging, the bulk impurity in filtering fuel and irony impurity, effectively avoid the generation of coking and the phenomenon that gets stuck, and ensures that the normal table of biomass combustion device runs.
Magnet filter 25 can adopt various structures, and such as, in a kind of embodiment of the utility model, magnet filter 25 comprises one or more and is fixed on annular magnet on hopper 14 inwall.
Certainly, magnet filter 25 can be arranged on above filter net device 24, also can be arranged on the below of filter net device 24, and in the utility model embodiment, magnet filter 25 is arranged on the below of filter net device 24.
When magnet filter 25 is this permanent magnet of above-mentioned annular magnet, although the irony impurity in fuel can be removed, but because its magnetic unanimously exists, be not easy in the future for the cleaning of these impurity, especially when in impurity containing when being similar to the sharp object of iron nail, easily cleaning personnel are damaged, therefore, in order to optimize such scheme further, in the another kind of embodiment of the utility model, magnet filter 25 is electromagnet, comprise iron core and be wrapped in the outer and conductive winding be connected with power supply of iron core, wherein, iron core needs to use demagnetization, and soft iron or silicon steel material make faster, by adopting the electromagnet of this structure, when clearing up the irony impurity on magnet filter 25, power supply and conductive winding being disconnected to make magnet filter 25 lose magnetism, irony impurity attached thereto falls naturally, while being convenient to cleaning and collection, avoid the injury to cleaning personnel.
Preferably, in order to ensure the filter effect of electromagnet, in the utility model embodiment, above-mentioned magnet filter 25 is provided with multiple, is uniformly distributed along hopper 14 circumference.
Filter net device 24 can be made up of a screen pack, also can be made up of multiple screen pack as required, in a kind of embodiment of the utility model, in order to improve the filter effect of filter net device 24, filter net device 24 comprises multiple screen pack increased successively along material falling direction order number.By this multiple filtration structure, more careful screening can be carried out to fuel, avoid the generation of coking phenomenon.
Further, in the utility model embodiment, filter net device 24 comprises the first screen pack and the second screen pack, and the order number of the first screen pack is 1-4 order, and the order number of the second screen pack is 8-10 order.
Above-mentioned its filter effect of filter net device 24 is certain, when different user demands, underaction, adaptability is poor, therefore, in the another kind of embodiment of the utility model, filter net device 24 comprises main filter screen and the secondary filter screen with the stacked setting of main filter screen, and secondary filter screen is connected with the extension adjustment device be positioned at outside hopper 14.Like this, secondary filter screen and main filter screen can be driven to misplace by extension adjustment device, to reach the object changing filter net device 24 order number, or directly secondary filter screen is taken away main filter screen position, only use main filter screen to filter, by this structure, can when not to filter net device 24 structure be changed, change the filter effect of filter, add the flexibility of filter greatly, different user demands can be met.
Extension adjustment device can adopt various structures to realize, such as chain telescoping mechanism, the expansion bend etc. that intersects, and in the utility model embodiment, extension adjustment device comprises support and piston cylinder, and wherein, support is fixed on hopper 14 outer wall; The cylinder body of piston cylinder is fixed on support, and the piston rod of piston cylinder is connected with the secondary filter screen in hopper 14 through the flat groove on hopper 14 wall, and this extension adjustment device structure is simple, is convenient to make and safeguards.
In existing biomass combustion device, the discharge outlet of feed arrangement does not arrange any firebreak device, in the middle of practical application, easy generation tempering, cause biomass fuel at the discharging opening of feed arrangement, even just take fire in feed arrangement, affect the thermal efficiency of boiler, also safety problem may be there is, therefore, in order to optimize technique scheme further, in the utility model embodiment, refer to Fig. 5, Fig. 5 is the structural representation of fireproof tempering device in biomass combustion furnace apparatus in the utility model embodiment, the discharging opening of feed arrangement is provided with fireproof tempering device, fireproof tempering device comprises lifting portion 16 and cover plate 17, lifting portion 16 is hollow and two ends all have the tubular of opening, its one end is communicated with feed arrangement discharging opening, the other end is hinged with cover plate 17, lifting portion 16 is inclined upwardly and meets 30 °≤α≤50 ° with the angle α of horizontal plane.
By arranging a lifting portion 16 raised up at feed arrangement discharging opening, and in the outlet in lifting portion 16, cover plate 17 is set, in use, the lifting portion 16 of biomass fuel through raising up, wash open cover plate 17 parabolically shape be sprinkled in boiling burner, in the dynamic process fallen, fully contact with air, sufficient combustion, efficiency of combustion is high, and ignition temperature is high, tail-off time is short, and due to lifting portion 16 raise up and cover plate 17 can be good at avoiding the generation of tempering phenomenon, reach the thermal efficiency ensureing boiler, improve the object of security.
In order to improve the powder feeding efficiency of feed arrangement, and ensure that biomass fuel can be washed cover plate 17 open and fall into Boiling Combustion room with parabolical form, in the utility model embodiment, the angle β of feed arrangement and horizontal plane meets 8 °≤β≤15 °.
Lifting portion 16 can adopt various shape, such as straight-tube shape, bell mouth shape etc., no matter but be that straight-tube shape, its opening of bell mouth shape are all larger, be unfavorable for the generation avoiding tempering phenomenon, therefore, in the utility model embodiment, lifting portion 16 is from the one end be connected with feed arrangement to other end reduced diameter, like this, the port of export in lifting portion 16 diminishes, biomass fuel not only can be made more easily to wash cover plate 17 open, and better can avoid the generation of tempering phenomenon, improve the security of feed arrangement.
Lifting portion 16 outlet can adopt multiple towards, such as export place plane parallel with perpendicular, be tilted to down or tilt upward etc., but in actual use, parallel with perpendicular or be tilted to down and all easily make biomass fuel export in lifting portion 16 or lifting portion 16 combustion, and then cause the material in feed arrangement to burn, cause tempering, therefore, in order to optimize technique scheme further, in the utility model embodiment, lifting portion 16 tilts upward away from the opening of one end of feed arrangement, and the angle γ of its place plane and horizontal plane meets 30 °≤γ≤50 °, so, in guarantee, biomass fuel is dished out, and while falling with parabola, avoid the generation of tempering phenomenon, ensure security.
It is hinged that cover plate 17 can be accomplished in several ways with lifting portion 16, and in the utility model embodiment, lifting portion 16 is provided with mount pad away from the top of one end of feed arrangement, mount pad is arranged hinged ear, cover plate 17 by hinge on hinge ear.
In order to prevent the biomass fuel gone out, cover plate 17 is rushed, make it to be in vertical state or to rotate greater angle to cause it to be difficult to fall with self gravitation, cannot continue to carry out capping to lifting portion 16, in the utility model embodiment, limited block is provided with above mount pad, can prevent cover plate 17 from rotating to vertical state or rotating greater angle by limited block, ensure its capping for lifting portion 16, avoid fireproof tempering device to lose efficacy.
In order to further improve the anti-backfire effect of fireproof tempering device, in the utility model embodiment, cover plate 17 is provided with at least one circle annular protrusion, one end hinged with cover plate 17, lifting portion 16 is provided with the annular groove matched with annular protrusion, after the opening in lifting portion 16 covers by cover plate 17, annular protrusion coordinates with annular groove, like this, it is more tight that cover plate 17 can coordinate with lifting portion 16, improves anti-backfire effect.
Annular protrusion can adopt various shape, and in the utility model embodiment, the cross section of annular protrusion is circular or oval.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a biomass combustion furnace apparatus, is characterized in that, comprising:
Body of heater, is provided with smoke exhaust pipe (13), feed arrangement and boiling burner, and the discharging opening of described feed arrangement is communicated with the burner hearth of described body of heater, boiling burner to be arranged in described burner hearth of the furnace body and to be positioned at the below of described discharging opening, comprise inner casing (19), shell (20) and air blast (23), described inner casing (19) and described shell (20) are arranged in described body of heater, described inner casing (19) to be nested in described shell (20) and and form air cavity between described shell (20), the sidewall of described inner casing (19) offers multiple pore (18), described shell (20) is provided with ash releasing tube (21) and blast pipe (22), described blast pipe (22) one end is communicated with described air cavity, the other end is connected with described air blast (23) air outlet,
Biomass ash pocket type back blowing dust removal device, comprising:
Casing (1);
Be arranged on the bearing support (4) in described casing (1) and filter bag (3), the blind end of described filter bag (3) is fixed on described bearing support (4), and described casing (1) top is provided with discharge duct (6);
The collection bucket (12) be connected with described casing (1) bottom, card (2) by having through hole between described collection bucket (12) and described casing (1) separates, the openend of described filter bag (3) is fixed on described card (2) and goes up and be communicated with described through hole, the bottom of described collection bucket (12) is provided with ash discharging hole to be opened/closed, and described smoke exhaust pipe (13) is communicated with the sidewall of described collection bucket;
Back-blowing device, comprises back blowing machine (10) and the first blowback pipeline (7), and described first blowback pipeline one end is connected with described back blowing machine (10) air outlet, and the other end is connected with described casing (1) top.
2. biomass combustion furnace apparatus according to claim 1, is characterized in that, the tapering of described collection bucket (12) is 60 ° ~ 75 °.
3. biomass combustion furnace apparatus according to claim 1, it is characterized in that, described discharge duct (6) and described first blowback pipeline (7) are provided with valve (5) near one end of described casing (1).
4. biomass combustion furnace apparatus according to claim 1, is characterized in that, described collection bucket (12) bottom ash discharging hole place is provided with cross ash-valve (11).
5. the biomass combustion furnace apparatus according to any one of claim 1-4, it is characterized in that, described discharge duct (6) is communicated with the inlet scoop of described back blowing machine (10) and air-introduced machine (8) by threeway respectively away from one end of described casing (1), is provided with inlet valve (9) between described threeway and described back blowing machine (10) and described air-introduced machine (8).
6. biomass combustion furnace apparatus according to claim 1, it is characterized in that, described back-blowing device also comprises the second blowback pipeline, described second blowback pipeline one end is communicated with the air outlet of described back blowing machine (10), and the other end is communicated with the sidewall of described casing (1).
7. biomass combustion furnace apparatus according to claim 1, it is characterized in that, described feed arrangement comprises hopper (14) and conveying worm (15), the discharging opening of described conveying worm (15) is communicated with the burner hearth of described body of heater, described hopper (14) comprises feeding-passage (1401) and heat exchanging part, feeding-passage (1401) has import and outlet, and described outlet is communicated with described conveying worm (15) feeding mouth; Described heat exchanging part is wrapped in the outside of described feeding-passage (1401), is provided with gas approach and exhanst gas outlet, and described gas approach is communicated with described discharge duct.
8. biomass combustion furnace apparatus according to claim 7, it is characterized in that, bottom near described conveying worm (15) in described feeding-passage (1401) is provided with filtering device, and described filtering device comprises filter net device (24) and magnet filter (25).
9. biomass combustion furnace apparatus according to claim 1, it is characterized in that, the discharging opening of described feed arrangement is provided with fireproof tempering device, described fireproof tempering device comprises lifting portion (16) and cover plate (17), described lifting portion (16) is for hollow and two ends all have the tubular of opening, its one end is communicated with described feed arrangement discharging opening, the other end is hinged with described cover plate (17), and described lifting portion (16) is inclined upwardly and meets 30 °≤α≤50 ° with the angle α of horizontal plane.
10. biomass combustion furnace apparatus according to claim 9, it is characterized in that, the angle β of described feed arrangement and horizontal plane meets 8 °≤β≤15 °, described lifting portion (16) tilts upward away from the opening of one end of described feed arrangement, and the angle γ of its place plane and described horizontal plane meets 30 °≤γ≤50 °.
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| CN201520548683.4U CN204922951U (en) | 2015-07-27 | 2015-07-27 | Biomass combustion stove device |
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| CN201520548683.4U CN204922951U (en) | 2015-07-27 | 2015-07-27 | Biomass combustion stove device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090898A (en) * | 2016-07-27 | 2016-11-09 | 长兴云峰炉料有限公司 | One is used for producing energy-saving material high-temperature boiling furnace |
| CN107559884A (en) * | 2017-09-13 | 2018-01-09 | 宁波圣菲机械制造有限公司 | A kind of high efficiency bio-fuel stove |
| CN108534130A (en) * | 2017-03-06 | 2018-09-14 | 上海强精金属制品有限公司 | Energy-saving biological fuel apparatus |
| CN112484043A (en) * | 2020-12-02 | 2021-03-12 | 苏交 | Back-blowing type biomass material sufficient combustion device and use method thereof |
-
2015
- 2015-07-27 CN CN201520548683.4U patent/CN204922951U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090898A (en) * | 2016-07-27 | 2016-11-09 | 长兴云峰炉料有限公司 | One is used for producing energy-saving material high-temperature boiling furnace |
| CN106090898B (en) * | 2016-07-27 | 2018-09-07 | 娄底高安环保科技有限公司 | One kind is for producing energy-saving material high-temperature boiling furnace |
| CN108534130A (en) * | 2017-03-06 | 2018-09-14 | 上海强精金属制品有限公司 | Energy-saving biological fuel apparatus |
| CN107559884A (en) * | 2017-09-13 | 2018-01-09 | 宁波圣菲机械制造有限公司 | A kind of high efficiency bio-fuel stove |
| CN107559884B (en) * | 2017-09-13 | 2023-10-17 | 宁波圣菲机械制造有限公司 | High-efficiency biofuel furnace |
| CN112484043A (en) * | 2020-12-02 | 2021-03-12 | 苏交 | Back-blowing type biomass material sufficient combustion device and use method thereof |
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