CN101900346A - Boiler-front feeding device of biomass boiler - Google Patents
Boiler-front feeding device of biomass boiler Download PDFInfo
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- CN101900346A CN101900346A CN 201010252134 CN201010252134A CN101900346A CN 101900346 A CN101900346 A CN 101900346A CN 201010252134 CN201010252134 CN 201010252134 CN 201010252134 A CN201010252134 A CN 201010252134A CN 101900346 A CN101900346 A CN 101900346A
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- boiler
- driven shaft
- helical blade
- charging gear
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Abstract
The invention discloses a boiler-front feeding device of a biomass boiler, comprising a motor and a speed reducer, rotating shaft, helical blades and feeding pipes, wherein the speed reducer is connected with the motor, and the motor and the speed reducer are arranged outside the boiler; one end of the rotating shaft is connected with the speed reducer, and the other end thereof extends to the inside of the boiler; the helical blades are fixedly sleeved on the rotating shaft, and the diameter and the screw pitch of the a discharging end of each helical blade is bigger than that of the feeding end of each helical blade; and the feeding pipes are sleeved outside the helical blades and provided with feed ports. A gearing pedestal is arranged between a helical transporter and the motor, thus ensuring the axiality of a shaft, preventing the movement of the shaft, improving the anti-torque and anti-bending properties of the shaft, avoiding the curve of the shaft and the bucking of the blades and prolonging the service life of the shaft. In addition, as the diameter and the screw pitch of the discharging end of each helical blade is bigger than that of the feeding end of each helical blade, the transporting amount of the biomass particles at the discharging end is larger than that of the feeding end, thereby effectively preventing blocking of the biomass particles at the discharging end and ensuring safe, rapid and even transportation of the biomass particles.
Description
Technical field
The present invention relates to a kind of feeding system of boiler, more specifically incite somebody to action, the present invention relates to a kind of boiler-front feeding device of biomass boiler.
Background technology
The feed-type of coal-burning boiler mainly is to carry by belt at present.Because the biological particles light weight, the boiler of biomass burning particle adopts the mode of helical feed to carry out front-furnace feeding more.As Chinese patent application 200710113283.0 disclosed a kind of anti-block spiral conveyors, it comprises the conveyer housing, be provided with the rotating shaft of flight, supporting seat and power set, be arranged on the charging aperture of housing one end, be arranged on the discharging opening of the housing other end, flight comprises the feeding screw sheet between charging aperture and discharging opening, be positioned at the pushing spiral sheet of discharging opening and housing inner chamber end, the feeding screw sheet is opposite with pushing spiral sheet rotation direction, both guaranteed the smooth delivery of power of material in course of conveying, when also making material arrive the discharging opening place, form mutual extruding at the discharging opening place, make it be extruded discharging opening easily, prevent the generation of accidents such as conveying worm burns out motor overheating because of obstruction or flight is impaired, reduced the use cost of equipment, guarantee that conveying worm is long-time, work efficiently.
Chinese patent application 200810062112.4 discloses a kind of conveying worm, it comprises drive unit, conveyance conduit and is located in the conveyance conduit and the helical blade of drive unit interlock, also be provided with some leakage sections on the conveyance conduit, the leakage structure of leakage section can be screen formula structure or fenestral fabric, and its leak is set to inner small and outside big diffusion structure.The leakage section of this invention by some intervals being set on conveyance conduit or arranging continuously, in course of conveying, can constantly redundant moisture be removed, thereby alleviate the load carried of conveying worm, further guarantee the long-time normal operation of conveying worm, increase service life, also reduced the infringement that excessive moisture may cause conveying worm simultaneously.
Chinese patent 200620170633.8 discloses a kind of biomass fuel feed bin and conveying equipment, and it can require to provide required fuel to boiler according to boiler, and its inside is not prone to swollen material and bridging phenomenon.It comprises feed bin, described feed bin is installed on support, is provided with spiral discharging machine in the bottom of feed bin, and the position of the discharging opening of corresponding described spiral discharging machine is provided with belt conveyor, output at described conveyer is provided with screw(-type) feeder, and the top of feed bin is little, the bottom is big.
Chinese patent 200820109316.4 discloses a kind of horizontal circle cartridge type biomass granular fuel combustor, relates to a kind of biomass burning granular fuel, and the burner of red-hot flame thermal source is provided for boiler.This device mainly contains screw feeder, particle burning chamber and temperature-measuring element.Screw feeder comprises that hopper, auger conveyor, frequency control motor and king bolt advance blade; The particle burning chamber is by a wind fresh air inlet on circular combustion barrel and the barrel, advance material toggling sheet that blade is connected, wind and secondary wind tangential inlet, wind and secondary vane shape air compartment, secondary wind swirl vane and swirl secondary air rectification section with king bolt; Temperature-measuring element is three chromel-alumel armoured thermocouples and a multi-channel electronic temperature indicator.This device is at the custom-designed modular burner of biomass granule fuel, and is simple in structure, easy to operate, can satisfy tens to the demand of hundreds of kilowatt boiler to thermal source, and the fuel that is specially adapted to fuel oil, gas fired-boiler substitutes demand.
Above-mentioned biological particles boiler feed has all adopted the mode of helical feed, because helix transporting device is longer, the phenomenon that easily yielding, the bearing wear of bending of helical axis and blade, particle putty in the boiler actual motion, often occur, cause the instability of maintenance of equipment rate height and feed, have a strong impact on the normal operation of biological particles boiler.
Summary of the invention
At the shortcoming of prior art, the purpose of this invention is to provide a kind of boiler-front feeding device of biomass boiler, make it avoid helical axis and blade to bend the phenomenon of distortion, bearing wear, particle putty.
To achieve these goals, technical scheme of the present invention is:
A kind of boiler-front feeding device of biomass boiler, it comprises:
Motor and be connected in the deceleration device of motor, this motor and deceleration device are positioned at outside the boiler;
One end is connected in deceleration device, the other end extends to the rotating shaft in the boiler;
Be fixedly welded on the helical blade on the rotating shaft, the diameter of helical blade discharge end and pitch are greater than the diameter and the pitch of its feed end; Discharge end will be bigger than feed end to the biological particles conveying capacity like this, can prevent effectively that biological particles from stopping up at discharge end, guarantees to carry equably safely and fast biological particles;
Be enclosed within the feed pipe outside the helical blade, feed pipe is provided with charging aperture.
Charging gear of the present invention is provided with bearing block at the end that rotating shaft connects deceleration device, with the axiality that guarantees axle, the play that prevents axle, improves antitorque, the bending resistance of axle, prevents the bending of axle, and the blade bending reduces maintenance rate greatly.For example adopt the deep groove ball bearing axle, the hermetic bearing mount pad of supporting high accuracy processing makes good concentricity, increases the stationarity of running, reduces the stress that bearing is subjected to, thereby increases the service life of axle.
Rotating shaft specifically can comprise first driven shaft and second driven shaft, and wherein, first driven shaft is connected in deceleration device, i.e. the rotation of motor drives the rotation of first driven shaft after deceleration device slows down; And, drive the rotation of second driven shaft thereby first driven shaft connects second driven shaft by pin.
During specific implementation, the first driven shaft place is provided with bearing block, and promptly first driven shaft is positioned at bearing block, and second driven shaft is fixedly welded with helical blade.
For fear of the play of axle, adopt interference fit between first driven shaft and the bearing block.
The diameter of helical blade feed end and pitch is greater than the diameter and the pitch of its discharge end, this gradual change type or the sudden change formula of can be that be changed to.
When helical blade diameter and pitch be changed to gradual change type the time, feed pipe is thick horn-like of the thin port of export of arrival end.
When helical blade diameter and pitch be changed to the sudden change formula time, can be the one-level sudden change that blade diameter has only two kinds, or blade diameter has two or more multistage sudden changes.
In order to realize even feeding, charging gear of the present invention is provided with star-shaped feeding machine at the charging aperture place of feed pipe.
In the charging gear of the present invention, feed pipe is a seamless steel pipe, and the end is adopted flange and helical axis to be connected to each other and is integral, and to improve sealing property, eliminates dust pollution, keeps the boiler room clean environment.
Compared with prior art, the present invention is provided with bearing block between helix transporting device and motor, with the axiality that guarantees axle, the play that prevents axle, increase the stationarity of running, reduce the stress that bearing bears, improve antitorque, the bending resistance of axle, prevent the bending of axle, the blade bending reduces maintenance rate greatly, thereby increases the service life of axle; In addition, because the diameter of helical blade feed end and pitch are greater than the diameter and the pitch of its discharge end, discharge end will be bigger than feed end to the biological particles conveying capacity, thereby prevent that effectively biological particles from stopping up at discharge end, guarantees to carry equably safely and fast biological particles.
Below in conjunction with drawings and Examples; further specify as claim; but be not limited to these embodiment as claim, any as the improvement on the claim essence spirit or alternative, still belong to as scope required for protection in claim claims.
Description of drawings
Fig. 1 is the structural representation of boiler-front feeding device of biomass boiler specific embodiment of the present invention.
The specific embodiment
As shown in Figure 1, the boiler-front feeding device of biomass boiler of present embodiment comprises: motor, deceleration device 1, bearing block 4, first driven shaft 3, second driven shaft 9, helical blade, feed pipe 10, star-shaped feeding machine 8.Wherein, motor and deceleration device 1 are positioned at outside the boiler, and deceleration device 1 connects motor; First driven shaft 3 is positioned at bearing block 4; Helical blade fixedly is welded on second driven shaft 9, and the discharge end of helical blade is positioned at boiler; The diameter of discharge end helical blade 11 and pitch are greater than the diameter and the pitch of feed end helical blade 12; Adopt oldham coupling 2 to be connected with round end general flat key 13 between the deceleration device 1 and first driven shaft 3, first driven shaft 3 is connected by taper bolt 5 with second driven shaft 9, adopts interference fit between first driven shaft and 3 bearing blocks 4; Feed pipe 10 is a seamless steel pipe, is enclosed within outside the helical blade, and feed pipe 10 ends are adopted blind flange 6 and flange 7 and second driven shaft 9 to be connected to each other and are integral; Feed pipe 10 is provided with charging aperture; The charging aperture place of feed pipe 10 is provided with star-shaped feeding machine 8.
During work, biomass granule fuel is transported to the stokehold hopper through bucket elevator, evenly enters the charging aperture of feed pipe 10 through star feeder.Motor drives 3 rotations of first driven shaft through deceleration device, and then drive the rotation of second driven shaft 9, push biological particles by feed pipe 10, last biological particles falls to the front end of biomass boiler burner in the effect of the promotion of helical blade and gravity, finishes the boiler feed.
Though the present invention discloses as above with preferred embodiment, is not in order to limit scope of the invention process.Any those of ordinary skill in the art, promptly every when doing a little improvement in not breaking away from invention scope of the present invention according to the equal improvement that the present invention did, should be invention scope of the present invention and contain.
Claims (10)
1. boiler-front feeding device of biomass boiler, wherein, this charging gear comprises:
Motor and be connected in the deceleration device of described motor, described motor and described deceleration device are positioned at outside the boiler;
One end is connected in described deceleration device, the other end extends to the rotating shaft in the boiler;
Fixedly sleeved helical blade on described rotating shaft, the diameter of described helical blade discharge end and pitch are greater than the diameter and the pitch of its feed end;
Be enclosed within the feed pipe outside the described helical blade, described feed pipe is provided with charging aperture.
2. charging gear as claimed in claim 1, wherein, the end that described rotating shaft connects described deceleration device is provided with bearing block.
3. charging gear as claimed in claim 1 or 2, wherein, described rotating shaft comprises first driven shaft and second driven shaft, and described first driven shaft is connected in described deceleration device, drives described second driven shaft rotation thereby described first driven shaft connects described second driven shaft by pin.
4. charging gear as claimed in claim 3, wherein, the described first driven shaft place is provided with bearing block, and described second driven shaft is fixedly welded with helical blade.
5. charging gear as claimed in claim 4 wherein, adopts interference fit between described first driven shaft and the described bearing block.
6. charging gear as claimed in claim 1, wherein, described helical blade diameter and pitch be changed to gradual change type or sudden change formula.
7. charging gear as claimed in claim 6, wherein, when described helical blade diameter and pitch be changed to gradual change type the time, described feed pipe is thick horn-like of the thin port of export of arrival end.
8. charging gear as claimed in claim 6, wherein, described helical blade diameter and pitch sudden change formula be changed to multistage sudden change.
9. charging gear as claimed in claim 1, wherein, the charging aperture place of described feed pipe is provided with star-shaped feeding machine.
10. charging gear as claimed in claim 1, wherein, described feed pipe is a seamless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010252134 CN101900346A (en) | 2010-08-12 | 2010-08-12 | Boiler-front feeding device of biomass boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010252134 CN101900346A (en) | 2010-08-12 | 2010-08-12 | Boiler-front feeding device of biomass boiler |
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| CN101900346A true CN101900346A (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010252134 Pending CN101900346A (en) | 2010-08-12 | 2010-08-12 | Boiler-front feeding device of biomass boiler |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252337A (en) * | 2011-05-19 | 2011-11-23 | 广州迪森热能技术股份有限公司 | Biomass shaftless spiral feeder |
| CN102661610A (en) * | 2012-05-11 | 2012-09-12 | 上海新业锅炉高科技有限公司 | Material locking type spiral feeding device |
| CN103776046A (en) * | 2012-10-21 | 2014-05-07 | 国惠环保新能源有限公司 | Biomass boiler material storing and feeding method with screw rods pushed forwards and then rotated backwards |
| CN104329682A (en) * | 2014-09-04 | 2015-02-04 | 徐成学 | Straw fuel feeder |
| CN105000337A (en) * | 2015-07-28 | 2015-10-28 | 无锡锡东能源科技有限公司 | Loading plunger type screw feeder |
| CN107013932A (en) * | 2017-04-13 | 2017-08-04 | 安徽鼎梁生物能源科技开发有限公司 | A kind of stably feeding device of biomass boiler |
| CN107101196A (en) * | 2017-04-13 | 2017-08-29 | 安徽鼎梁生物能源科技开发有限公司 | A kind of biomass boiler |
| CN108302965A (en) * | 2018-01-17 | 2018-07-20 | 江苏新方圆电气设备制造有限公司 | A kind of rotary barrel for material waste heat recovery |
| CN109665269A (en) * | 2019-01-15 | 2019-04-23 | 湖北华电襄阳发电有限公司 | A kind of multi-stag tiny structure screw feeding device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU442347A1 (en) * | 1971-01-18 | 1974-09-05 | Всесоюзный Дважды Ордена Трудового Красного Знамени Теплотехнический Научно-Исследовательский Институт Им. Ф.Э.Дзержинского | Screw feeder |
| SU1320598A1 (en) * | 1985-07-02 | 1987-06-30 | Всесоюзный Заочный Политехнический Институт | Fuel feeder |
| DE3727006A1 (en) * | 1987-08-13 | 1989-02-23 | Weiss Geb Kg | Rotation burner for solid fuels |
| CN201121052Y (en) * | 2007-11-30 | 2008-09-24 | 王雪源 | Double helix feeder |
| CN201209229Y (en) * | 2008-04-25 | 2009-03-18 | 陕西科技大学 | Energy-saving spiral feeding device |
| CN201382434Y (en) * | 2009-04-22 | 2010-01-13 | 河北新能电力有限公司 | High-efficient stokehold feeding system of straw direct-fired boiler |
| CN201748461U (en) * | 2010-08-12 | 2011-02-16 | 广州迪森热能技术股份有限公司 | Biomass boiler front feeding device |
-
2010
- 2010-08-12 CN CN 201010252134 patent/CN101900346A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU442347A1 (en) * | 1971-01-18 | 1974-09-05 | Всесоюзный Дважды Ордена Трудового Красного Знамени Теплотехнический Научно-Исследовательский Институт Им. Ф.Э.Дзержинского | Screw feeder |
| SU1320598A1 (en) * | 1985-07-02 | 1987-06-30 | Всесоюзный Заочный Политехнический Институт | Fuel feeder |
| DE3727006A1 (en) * | 1987-08-13 | 1989-02-23 | Weiss Geb Kg | Rotation burner for solid fuels |
| CN201121052Y (en) * | 2007-11-30 | 2008-09-24 | 王雪源 | Double helix feeder |
| CN201209229Y (en) * | 2008-04-25 | 2009-03-18 | 陕西科技大学 | Energy-saving spiral feeding device |
| CN201382434Y (en) * | 2009-04-22 | 2010-01-13 | 河北新能电力有限公司 | High-efficient stokehold feeding system of straw direct-fired boiler |
| CN201748461U (en) * | 2010-08-12 | 2011-02-16 | 广州迪森热能技术股份有限公司 | Biomass boiler front feeding device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252337A (en) * | 2011-05-19 | 2011-11-23 | 广州迪森热能技术股份有限公司 | Biomass shaftless spiral feeder |
| CN102661610A (en) * | 2012-05-11 | 2012-09-12 | 上海新业锅炉高科技有限公司 | Material locking type spiral feeding device |
| CN103776046A (en) * | 2012-10-21 | 2014-05-07 | 国惠环保新能源有限公司 | Biomass boiler material storing and feeding method with screw rods pushed forwards and then rotated backwards |
| CN103776046B (en) * | 2012-10-21 | 2016-06-08 | 国惠环保新能源有限公司 | Rotating biomass boiler storing and feed process is postponed before screw rod |
| CN104329682A (en) * | 2014-09-04 | 2015-02-04 | 徐成学 | Straw fuel feeder |
| CN104329682B (en) * | 2014-09-04 | 2016-08-24 | 徐成学 | Stalk fuel feed appliance |
| CN105000337A (en) * | 2015-07-28 | 2015-10-28 | 无锡锡东能源科技有限公司 | Loading plunger type screw feeder |
| CN107013932A (en) * | 2017-04-13 | 2017-08-04 | 安徽鼎梁生物能源科技开发有限公司 | A kind of stably feeding device of biomass boiler |
| CN107101196A (en) * | 2017-04-13 | 2017-08-29 | 安徽鼎梁生物能源科技开发有限公司 | A kind of biomass boiler |
| CN108302965A (en) * | 2018-01-17 | 2018-07-20 | 江苏新方圆电气设备制造有限公司 | A kind of rotary barrel for material waste heat recovery |
| CN108302965B (en) * | 2018-01-17 | 2023-08-04 | 江苏新方圆电气设备制造有限公司 | Rotary cylinder for recovering waste heat of materials |
| CN109665269A (en) * | 2019-01-15 | 2019-04-23 | 湖北华电襄阳发电有限公司 | A kind of multi-stag tiny structure screw feeding device |
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Application publication date: 20101201 |