CN202082914U

CN202082914U - Biomass energy burner provided with shifting fork at feed inlet

Info

Publication number: CN202082914U
Application number: CN2011201624201U
Authority: CN
Inventors: 杜克镛; 钟哲科
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-20
Filing date: 2011-05-20
Publication date: 2011-12-21
Anticipated expiration: 2021-05-20

Abstract

The utility model relates to a burner, in particular to a biomass energy burner which is provided with a shifting fork at a feed inlet and can break apart and level fuel so as to ensure that the fuel is more sufficiently burnt. The biomass energy burner comprises a combustion chamber; a feed inlet and a main air inlet are arranged on one side of the combustion chamber; and an open air outlet is arranged on the other side of the combustion chamber; and a charcoal outlet is arranged at the bottom of the combustion chamber. The biomass energy burner is characterized in that a feed screw conveyor is arranged at the feed inlet; a shafting fork coaxially rotating with the feed screw conveyor is connected at the tail end of the feed screw conveyor; and the external diameter of the rotating position of the shifting fork is larger than the diameter of the screw conveyor. As the shifting fork is arranged at the tail end of the feed screw conveyor, the fuel is broken apart and leveled, and the fuel is prevented from being accumulated; and an extension tube is arranged at the air outlet of the combustion chamber, and an air supplement opening is arranged at the connected position between the extension tube and the air outlet, so that fume at the air outlet is restrained.

Description

Charging aperture is provided with the biomass energy burner of shift fork

Technical field

The utility model relates to a kind of burner, and particularly a kind of charging aperture is provided with shift fork, fuel can be broken up and push away the flat fuel combustion biomass energy burner more fully that makes.

Background technology

Biomass energy is as an important directions of new energy development, receive increasing concern, the bamboo bits that produce in industrial and agricultural production, wood chip, stalk etc. all belong to biomass energy, someone produces biomass granule fuel with above-mentioned bamboo bits, wood chip, stalk etc. by compacting and utilizes, the most direct method of utilization of biomass energy is to release energy by burning, the charcoal that produces in the combustion process is as important material simultaneously, can make fertilizer, contain charcoal fertilizer and can improve soil texture, can also be used to making multiple products such as active carbon.

The CN201495199U patent of Patent Office of the People's Republic of China's bulletin on February 23rd, 2011, name is called a kind of biomass energy burner, this burner has horizontal combustion chamber, be provided with distribution plenum outside the combustion chamber, combustion chamber one side is provided with charging aperture, discharging opening and main air inlet, opposite side is open air outlet, also links to each other with distribution plenum by wind distributing hole in the bottom side of combustion chamber and carries out secondary air.This device charging aperture adopts the feeding packing auger transfer the fuel, because the angle of auger outlet is provided with fixing, after entering the combustion chamber, burning piles up in a side easily, and often pile up too high, bottom fuel can't be fully burned, and less even when being Powdered when fuel particle, too high if fuel is piled up, combustion air blows afloat fuel from air outlet easily directly to be taken out of.

Summary of the invention

The purpose of this utility model is to solve the easy one-sided accumulation of fuel of above-mentioned biomass combustion stove feeding packing auger conveying and pile up too high problem, above-mentioned biomass combustion stove combustion chamber is improved, the biomass energy burner that provides a kind of charging aperture that shift fork is set, with fuel break up push away flat.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of charging aperture is provided with the biomass energy burner of shift fork, comprise the combustion chamber, combustion chamber one side is provided with charging aperture, main air port, opposite side is open air outlet, the bottom, combustion chamber is provided with carbon outleting port, described charging aperture is provided with feeding packing auger, and the end of described feeding packing auger is connected with a shift fork with the feeding packing auger coaxial rotation, and the rotation external diameter of shift fork is greater than the feeding packing auger diameter.Because the angular relationship of auger outlet, fuel is easy to generate one-sided accumulation in the combustion chamber, the bottom fuel combustion is insufficient easily, and one-sided fuel is piled up too high, the fuel at top is also blown by combustion air easily and takes out of, produces flue gas, so this device and the coaxial shift fork that is provided with of feeding packing auger, material broken up in charging push away flatly, avoid producing the problems referred to above.Especially for pulverous fuel, the effect that reduces flue gas is particularly evident.

As preferably, described shift fork one end is connected with feeding packing auger axis end, and the other end is branched at least two driving levers.The rotation external diameter of shift fork is by a driving lever decision of radius of turn maximum.

As preferably, carbon outleting port sets out the charcoal auger, and the pitch that goes out the helical blade of charcoal auger is dwindled gradually along going out the charcoal direction.Biological material enters the combustion chamber from charging aperture, when being burned to a certain degree, can adopt out the charcoal auger that the burning substrate in the combustion chamber is taken out, because going out the helical blade pitch of charcoal auger dwindles gradually with going out the charcoal direction, the burning substrate is compressed in going out charcoal auger course of conveying, and in compression process, discharge and mix air, make the burning substrate be in further charing under the state of high temperature, high pressure, secluding air in the course of conveying, improve end product quality.Simultaneously, if it is identical to go out charcoal auger two ends pitch, in course of conveying, there is the space between the burning substrate, the flue gas that produces in the combustion chamber overflows from the space easily, and a large amount of high temperature incendivity particles that mix in the flue gas, safety can't guarantee, this device goes out in the charcoal auger conveying burning substrate process to compress, make the burning substrate compacted in course of conveying, eliminate the space, avoid overflowing of flue gas.Adopt out the charcoal auger to go out charcoal, can continue charcoal according to charging and the ratio that goes out charcoal, biomass fuel completing combustion if desired also can go out the charcoal auger as ash discharge.

As preferably, the pitch of the helical blade of described feeding packing auger is dwindled gradually with feedstock direction.When material to be burnt is the bamboo bits, wood chip, when being cut into the bulk materials such as stalk of segment, the material gap is big in the feeding packing auger, flue gas in the combustion chamber overflows from the gap easily, and there are a large amount of air in the gap, material in the feeding packing auger may be ignited at the combustion chamber charging aperture, so the pitch of the helical blade of charging flood dragon is dwindled gradually with feedstock direction, in fill process, material is compressed, eliminate the gap of material, avoid flue gas to overflow, discharge the air in the material gap simultaneously, avoid material in course of conveying, to be ignited, and material compression back structure is comparatively tight, is difficult for being ignited at charging aperture.As other preferred version, when the burning material was the granular fuel of compression forming, the helical blade pitch of feeding packing auger was constant, and the granular fuel structure of compression forming is tight, itself was difficult for being ignited and further compression.

As preferably, described feeding packing auger and go out the charcoal auger and all use buncher to drive.Can regulate the rotating speed of feeding packing auger according to the temperature and the intake of combustion chamber, and feeding packing auger and the rotating ratio that goes out the charcoal auger be regulated, satisfy the demand under the different situations according to the actual needs of inlet amount and the ratio that goes out the charcoal amount.

As preferably, the two bottom sides of combustion chamber reduces gradually to intermediate altitude, and the combustion chamber has out the charcoal groove in the middle of the bottom, and an end that goes out the charcoal auger is arranged on out in the charcoal groove, shift fork be positioned at the charcoal groove directly over.Burning substrate in the combustion chamber is that accumulation is compiled in the centre position to the extreme lower position of bottom, combustion chamber, and set out the charcoal groove in this position, be deposited in the burning substrate burning fullest of bottom, fall into out in the charcoal groove and to be gone out the charcoal auger and send, shift fork is positioned at directly over the charcoal groove, the material of coming in from charging aperture directly drops on the burning substrate top burning of accumulation, and by shift fork break up push away flat.

As preferably, described combustion chamber outer ring is around one deck distribution plenum, and the bottom, combustion chamber is provided with air distribution plate, separates by air distribution plate between bottom, combustion chamber and the distribution plenum, and air distribution plate is provided with wind distributing hole.Main air port forms an air intake, and the wind distributing hole air intake forms secondary air on the air distribution plate, and one time air intake is different with the secondary air direction, and combustion air is flowed towards different directions in the combustion chamber, increases the time of contact and the contact-making surface of combustion air and burning material.

As preferably, the sidewall of combustion chamber that goes out charcoal groove top is provided with igniter, and main air port comprises two openings, is separately positioned on the both sides of igniter, more helps igniting.

As preferably, be evenly distributed with convex closure on the air distribution plate, the side perforate of convex closure forms wind distributing hole, and wind distributing hole opening direction and main air port opening direction angle are spent between 135 degree 45.The wind distributing hole opening direction is a side direction on the air distribution plate, makes secondary air form spiral wind in the combustion chamber, makes the burning material be difficult for entering distribution plenum from wind distributing hole simultaneously.

As preferably, the air outlet place of described combustion chamber is connected with the prolongation tube of annular, and it is open prolonging a tube outer end, prolongs evenly to be provided with some connections on tube is connected an end with air outlet the ring wall and to prolong the inboard wind-supplying mouths with the outside of tube.During the combustion chamber fuel combustion, understand some powdered fuel because incomplete combustion, be blown out to the air outlet place by combustion air, prolonging being provided with of tube extends to the combustion chamber, give fuel burning time more fully, simultaneously, when the combustion air deficiency causes incomplete combustion, combustion air blows out at the air outlet place along prolonging the tube axial flow, in the inboard negative pressure that forms of the wind-supplying mouth that prolongs tube, extraneous air is sucked from wind-supplying mouth, combustion air is replenished, for unburnt fuel provides oxygen, remove smoke.

As preferably, the described length that prolongs tube is 1/3～2/3 of combustion chamber length.

As preferably, described burner also comprises blower fan, and the outside of distribution plenum also is provided with preheating chamber, and preheating chamber and distribution plenum are relatively independent, and preheating chamber links to each other with air inlet and is provided with some cold wind imports at the preheating chamber periphery, and distribution plenum links to each other with fan outlet.Because the heat height of combustion chamber, the outer wall of distribution plenum also can reach higher temperature, arranged outside preheating chamber at distribution plenum, utilize the heat of distribution plenum outer wall that air is carried out preheating, air glide path is: air enters preheating chamber from the cold wind import, enter distribution plenum through air inlet, fan outlet, enter the combustion chamber from distribution plenum by air intake and secondary air again, combustion-supporting back absorbs heat and forms hot blast from combustion chamber air outlet air-out, and hot blast is used for drying, heating or life heating.

As preferably, top of combustion chamber is the arc top, guarantees that the spiral wind of secondary air can not produce flow blind angle in the combustion chamber.As preferably, top of combustion chamber also is provided with the wind distributing hole that is communicated with distribution plenum.

As preferably, the described ratio that goes out charcoal auger two ends pitch at 2:1 between the 5:1.

As preferably, the ratio of described feeding packing auger two ends pitch at 2:1 between the 5:1.The compression ratio different according to the material different choice.

The utility model is provided with shift fork at the end of feeding packing auger, fuel is broken up push away flatly, avoids fuel to pile up; The combustion chamber air outlet is provided with and prolongs tube, and with the air outlet junction wind-supplying mouth is set at the prolongation tube, has suppressed the flue gas of air outlet; Go out charcoal in the time of the burning of combustion chamber material, make material not again in the combustion chamber completing combustion become grey; When going out charcoal the burning substrate is compressed, make the further charing of burning substrate, improve the product carbon content.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

Fig. 2 is an A-A cross-sectional view among Fig. 1.

Fig. 3 is a B-B cross-sectional view among Fig. 2.

Fig. 4 is the structural representation of the utility model air distribution plate.

Fig. 5 is second kind of structural representation of the utility model.

Among the figure: 1. blower fan, 2. fan outlet, 3. time distribution plenum, 4. burner matrix, 5. mounting flange, 6. main distribution plenum, 7. loading hopper, 8. feeding packing auger, 9. charging motor, 10. go out the charcoal motor, 11. combustion chambers, 12. igniters, 13. charging apertures, 14. go out the charcoal groove, 15. go out the charcoal auger, 16. carbon outleting ports, 17. air distribution plates, 18. main air port, 19. wind distributing holes, 20. preheating chambers, 21. cold wind imports, 22. air inlet, 23. prolong tube, 24. wind-supplying mouths, 25. shift forks.

The specific embodiment

Also in conjunction with the accompanying drawings the utility model is further specified below by specific embodiment.

Embodiment 1: a kind of charging aperture is provided with the biomass energy burner of shift fork, as shown in Figures 1 to 4.

This device comprises burner matrix 4, burner matrix 4 is horizontal column type, and as Fig. 1, Fig. 2, shown in Figure 3, burner matrix 4 is a double-decker, internal layer is combustion chamber 11, skin is a time distribution plenum 3, and inferior distribution plenum 3 is looped around 11 outsides, combustion chamber, and 11 tops, combustion chamber are the arc top, and combustion chamber 11 and time distribution plenum 3 are separated by the combustion chamber roof, 11 bottoms, combustion chamber are provided with air distribution plate 17 and separate by air distribution plate 17 and time distribution plenum 3, and as shown in Figure 4, air distribution plate 17 is provided with wind distributing hole 19.As shown in Figure 3, air distribution plate 17 is from two side direction intermediate, inclined, so that the solid accumulation of waiting to burn is at air distribution plate 17 middle parts.As shown in Figure 2, the right-hand member at air distribution plate 17 middle parts has out charcoal groove 14, go out and be provided with out charcoal auger 15 in the charcoal groove 14, the helical blade pitch that goes out charcoal auger 15 is dwindled gradually along throughput direction, the pitch ratio at two ends is 4:1, also be provided with carbon outleting port 16 at the terminal downside that goes out charcoal auger 15, go out charcoal auger 15 and drive, go out charcoal motor 10 and be buncher by going out charcoal motor 10.The right-hand member of burner matrix 4 and mounting flange 5 are fixing, mounting flange 5 is a square plate, the length of side is the twice of burner matrix 4 diameters, the right side of mounting flange 5 is provided with main distribution plenum 6, main distribution plenum 6 be looped around 11 outer field distribution plenums in combustion chamber 3 and be communicated with, making ring week of combustion chamber 11 and right side be provided with distribution plenum can be from all angles air intake.The fan outlet 2 of blower fan 1 is communicated with main distribution plenum 6.The left side opening of combustion chamber 11 is as air outlet, and the air outlet place is connected with and prolongs tube 23, and the left end that prolongs tube 23 is open, the ring of right-hand member and air outlet junction evenly offers one and encloses wind-supplying mouth 24 on week.11 right sides, combustion chamber are provided with charging aperture 13, igniter 12, main air port 18, charging aperture 13 be positioned at charcoal groove 14 the top and with go out charcoal groove 14 and align, igniter 12 is arranged on charging aperture 13 and goes out on the sidewall of combustion chamber between the charcoal groove 14, the both sides of igniter 12 are respectively equipped with a main air port 18, and main air port 18 is communicated with combustion chamber 11 and main distribution plenum 6.Charging aperture 13 places are provided with feeding packing auger 8, the front end upside of feeding packing auger 8 is provided with loading hopper 7, the end of feeding packing auger 8 is inboard concordant with charging aperture 13, the end of feeding packing auger 8 is connected with the shift fork 25 of a coaxial rotation, rotating shaft center, left end that shift fork 25 right-hand members connect feeding packing auger 8 are branched into two parallel driving levers, distance between the driving lever is greater than the diameter of feeding packing auger 8, driving lever be used for pile up too high fuel break up push away flat.Feeding packing auger drives by charging motor 9, and charging motor 9 is a buncher.Feeding packing auger 8 and go out charcoal auger 15 and all penetrate main distribution plenum 6, and seal at the place of penetrating.

The structure of air distribution plate as shown in Figure 4, be evenly equipped with convex closure on the air distribution plate 17, the convex closure lateral opening forms wind distributing hole 19, and the opening direction of wind distributing hole 19 is shown in arrow among Fig. 4, and the opening direction of the wind distributing hole 19 of adjacent column and main air port direction have the angle of 45 degree and 135 degree respectively.

During the work of this device, biomass fuel adds from loading hopper, be transported in the combustion chamber by feeding packing auger, and by shift fork with biomass fuel break up push away flat, avoid the one-sided accumulation of biomass fuel or pile up too high, biomass fuel is piled up in the charcoal groove position that goes out of bottom, combustion chamber air distribution plate, burn with ignition device, the air quantity that the while blower fan is blown into is through the distribution plenum air distribution, part combustion air enters the combustion chamber from main air port and forms an air intake, another part combustion air enters the combustion chamber and forms secondary air from wind distributing hole, twice air intake wind direction difference, form turbulent flow in the combustion chamber, combustion air and biomass fuel are longer time of contact, contact-making surface is bigger, combustion-supporting effect is good, the formation hot blast blew out from the air outlet in left side, combustion chamber after the heat that burning produces was absorbed by combustion air, enter the prolongation tube from axis direction and form negative pressure at wind-supplying mouth, the outside air suction is replenished combustion air, and in prolonging tube, there is sufficient room to burn, the flue gas that hot blast is taken out of burns once more, remove smoke, the hot blast that blows out cleans more, and hot blast can be used for drying, heating, life heating etc.After burning is one section the time, going out the charcoal auger starts working, the substrate that will burn output, going out in the process that the charcoal auger carries pitch constantly dwindles, the burning substrate is compressed, eliminate the space between the burning substrate, discharge the air that is mingled in the burning substrate, make the burning substrate be in further charing under the environment of high temperature, high pressure, secluding air, improve the carbon content of the burning substrate at carbon outleting port place.Carry simultaneously will go out charcoal auger space in the compression process and fill up, prevent that the flue gas of combustion chamber from overflowing from going out charcoal auger space, more environmental protection and safety.According to the relation that goes out between charcoal amount and the feeding quantity, regulate feeding packing auger and the rotating ratio that goes out the charcoal auger according to the calculating of air flow rate proportioning this moment, realizes continuing charging and going out charcoal.Charcoal in the burning substrate can be used for making fertilizer and improve soil texture, also can be used for making multiple products such as active carbon.

Embodiment 2: a kind of charging aperture that combustion air is carried out preheating is provided with the biomass energy burner of shift fork, as shown in Figure 5.In the periphery of burner matrix 4 is that the outside of distribution plenum is provided with one deck preheating chamber 20 again, and the ring of preheating chamber 20 has a plurality of cold wind imports 21 on week, and preheating chamber 20 is linked to each other with air inlet 22.Identical among all the other structures in the present embodiment and the embodiment 1.

Because conduction of heat, the outer wall of burner matrix 4 also has higher temperature usually, even can reach more than 100 degree, combustion air enters preheating chamber 20 from cold wind import 21, utilize the heat of burner matrix 4 outer walls to carry out preheating, enter distribution plenum 6 from blower fan 1 again, the heat of loss has carried out utilizing again during not only to burning, and plays the effect of heat insulation of burner matrix 4 and environment.

Identical among the present embodiment course of work and the embodiment 1.

Claims

1. a charging aperture is provided with the biomass energy burner of shift fork, comprise the combustion chamber, combustion chamber one side is provided with charging aperture, main air port, opposite side is open air outlet, the bottom, combustion chamber is provided with carbon outleting port, it is characterized in that: described charging aperture is provided with feeding packing auger, and the end of described feeding packing auger is connected with a shift fork with the feeding packing auger coaxial rotation, and the rotation external diameter of shift fork is greater than the feeding packing auger diameter.

2. charging aperture according to claim 1 is provided with the biomass energy burner of shift fork, it is characterized in that: described shift fork one end is connected with feeding packing auger axis end, and the other end is branched at least two driving levers.

3. charging aperture according to claim 1 is provided with the biomass energy burner of shift fork, it is characterized in that: described carbon outleting port sets out the charcoal auger, and the pitch that goes out the helical blade of charcoal auger is dwindled gradually along going out the charcoal direction.

4. be provided with the biomass energy burner of shift fork according to claim 1 or 2 or 3 described charging apertures, it is characterized in that: the two bottom sides of combustion chamber reduces gradually to intermediate altitude, the combustion chamber has out the charcoal groove in the middle of the bottom, an end that goes out the charcoal auger is arranged on out in the charcoal groove, shift fork be positioned at the charcoal groove directly over.

5. charging aperture according to claim 4 is provided with the biomass energy burner of shift fork, it is characterized in that: the outer ring of described combustion chamber is around one deck distribution plenum, bottom, described combustion chamber is provided with air distribution plate, separates by air distribution plate between bottom, combustion chamber and the distribution plenum, and air distribution plate is provided with wind distributing hole.

6. charging aperture according to claim 5 is provided with the biomass energy burner of shift fork, it is characterized in that: be evenly distributed with convex closure on the air distribution plate, the side perforate of convex closure forms wind distributing hole, and wind distributing hole opening direction and main air port opening direction angle are spent between 135 degree 45.

7. be provided with the biomass energy burner of shift fork according to claim 1 or 2 or 3 described charging apertures, the air outlet place of combustion chamber is connected with the prolongation tube of annular, it is open prolonging a tube outer end, prolongs evenly to be provided with some connections on tube is connected an end with air outlet the ring wall and to prolong the inboard wind-supplying mouths with the outside of tube.

8. charging aperture according to claim 7 is provided with the biomass energy burner of shift fork, it is characterized in that: the described length that prolongs tube is 1/3～2/3 of combustion chamber length.

9. be provided with the biomass energy burner of shift fork according to claim 1 or 2 or 3 described charging apertures, it is characterized in that: described burner also comprises blower fan, the outside of distribution plenum also is provided with preheating chamber, preheating chamber and distribution plenum are relatively independent, preheating chamber links to each other with air inlet and is provided with some cold wind imports at the preheating chamber periphery, and distribution plenum links to each other with fan outlet.

10. be provided with the biomass energy burner of shift fork according to claim 1 or 2 or 3 described charging apertures, it is characterized in that: top of combustion chamber is the arc top.