CN110805897A - Flue gas backward flow formula combustor - Google Patents
Flue gas backward flow formula combustor Download PDFInfo
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- CN110805897A CN110805897A CN201911055658.1A CN201911055658A CN110805897A CN 110805897 A CN110805897 A CN 110805897A CN 201911055658 A CN201911055658 A CN 201911055658A CN 110805897 A CN110805897 A CN 110805897A
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- air inlet
- air
- flue gas
- combustion cylinder
- fan
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of burners, and aims to provide a flue gas reflux type burner which comprises a furnace body and a combustion cylinder, wherein one end of the combustion cylinder penetrates into the furnace body, the end part of the combustion cylinder is provided with a combustion port, the other end of the combustion cylinder is positioned outside the furnace body, and the end part of the combustion cylinder is provided with an air inlet device; a smoke exhaust pipe is arranged on the furnace body; the air inlet device comprises a fan connected to the combustion cylinder and an air inlet cover arranged at the air inlet of the fan, and the bottom of the air inlet cover is provided with an air inlet; the smoke exhaust pipe is provided with a return pipe, the return pipe is connected to the side wall of the air inlet cover, air and smoke are sucked into the fan by using the suction force of the fan, the air and the smoke are fully mixed by using the rotation of the blades, and the mixed gas is exhausted into the combustion cylinder, so that the effects of diluting oxygen in the air and reducing the emission of nitrogen oxides are achieved; and the working efficiency of the fan cannot be influenced, and any mixing device is not required to be additionally arranged in the combustion cylinder, so that the jet combustion effect of flame is ensured.
Description
Technical Field
The invention relates to the technical field of burners, in particular to a flue gas backflow type burner.
Background
In recent years, the economic growth of China is rapid, the energy consumption is remarkably improved, and the problem of environmental pollution caused by the energy consumption is increasingly severe. At present, the environmental protection department in China has higher and higher requirements on the emission limit of pollutants generated by combustion. For this reason, reducing nitrogen oxide emissions is one of the main goals of current combustor designs.
At present, a chinese patent document with an authorization publication number of CN205979772U in the prior art discloses an external circulation flue gas recirculation type fully premixed burner, which comprises a fan, a gas pipe, a premixing cavity, a combustion head and an ignition device; the premixing cavity is internally provided with a spiral plate, and the gas mixture is driven by spiral rotating airflow, so that the gas and the air are further completely mixed; and the combustor is additionally provided with an external circulation flue gas return pipe, the two ends of the flue gas return pipe are respectively connected to the chimney and the premixing cavity, flue gas is led out from the chimney outside the boiler hearth to flow back, and the flue gas led in through the flue gas return pipe is mixed with air led in by the fan and fuel gas led in through the fuel gas pipe in the premixing cavity to dilute oxygen, further improve the combustion efficiency and reduce the emission of nitrogen oxides.
The burner in the above patent document uses the spiral plate to further mix the air, the gas and the flue gas in the premixing chamber, however, the arrangement of the spiral plate also hinders the flow of the gas, and the flame spraying effect of the burner is affected.
Disclosure of Invention
The invention aims to provide a flue gas reflux type combustor which can mix flue gas and air without influencing gas flow, and achieves the effects of diluting oxygen and reducing emission of nitrogen oxides.
The technical purpose of the invention is realized by the following technical scheme:
a flue gas reflux type burner comprises a furnace body and a combustion cylinder, wherein one end of the combustion cylinder penetrates into the furnace body, a combustion port is formed in the end part of the combustion cylinder, the other end of the combustion cylinder is positioned outside the furnace body, and an air inlet device and a gas valve group are arranged at the end part of the combustion cylinder; a plurality of gas pipes connected with the gas valve group and an ignition device used for igniting gas are arranged in the combustion cylinder; a smoke exhaust pipe is arranged on the furnace body; the air inlet device comprises a fan connected to the combustion cylinder and an air inlet cover arranged at the air inlet of the fan, and the bottom of the air inlet cover is provided with an air inlet; the smoke exhaust pipe is provided with a return pipe, and the return pipe is connected to the side wall of the air inlet cover.
By adopting the technical scheme, one end of the return pipe is connected to the air inlet cover, air and smoke are sucked into the fan by the suction force of the fan, the air and the smoke are fully mixed by the rotation action of the blades in the fan, and the mixed gas is discharged into the combustion cylinder, so that the effects of diluting oxygen in the air and reducing the emission of nitrogen oxides are achieved; and the working efficiency of the fan cannot be influenced, and any mixing device is not required to be additionally arranged in the combustion cylinder, so that the jet combustion effect of flame is ensured.
The invention is further configured to: the fan comprises a shell, a centrifugal impeller rotationally connected in the shell and a driving motor used for driving the centrifugal impeller to rotate; the centrifugal impeller comprises a rotating plate fixedly connected with an output shaft of the driving motor, a reinforcing plate arranged at intervals with the rotating plate along the axial lead direction, and a plurality of air outlet blades uniformly arranged between the rotating plate and the reinforcing plate along the circumferential direction; the air outlet blades are all arranged at the outer edge of the rotating plate, so that an air mixing cavity is formed in the center of the centrifugal impeller; an air inlet hole is formed in the center of the reinforcing plate, and an air inlet communicated with the air mixing cavity and the air inlet cover is formed in the air inlet hole in the shell.
By adopting the technical scheme, the centrifugal impeller during rotation blows air out from the gaps among the air outlet blades by the pushing of the air outlet blades and feeds air into the air mixing cavity through the axial air inlet holes; the flue gas and the air are pumped into the air mixing cavity through the air inlet and the air inlet hole, are mixed under the action of centrifugal force generated by rotation of the centrifugal impeller, are scattered under the pushing of the air outlet blades and are further mixed, and therefore the effect of diluting the air is achieved.
The invention is further configured to: a plurality of air inlet blades are uniformly arranged on the edge of the air inlet hole along the circumferential direction, and the air inlet blades generate suction towards the interior of the air mixing cavity through rotation when the fan works.
Through adopting above-mentioned technical scheme, when centrifugal impeller when rotating, utilize the produced suction of air inlet blade can accelerate the air admission to mix the wind intracavity, and the air can follow the helical direction entering under air inlet blade's effect, has strengthened the mixing efficiency of air and flue gas.
The invention is further configured to: the inner side of the air inlet blade is fixedly connected with a rotating ring which has the same axial lead with the rotating plate; and one end of the return pipe connected to the air inlet cover is provided with an extension pipe which penetrates through the rotating ring and extends into the air mixing cavity.
Through adopting above-mentioned technical scheme, utilize the extension pipe to make the flue gas can directly be sucked to mix the wind intracavity, and the air moves along the helical direction under air inlet blade's effect for produce relative motion between air and the flue gas, the air can be constantly with the flue gas mixture income that contacts when the motion, makes the mixture more even, has strengthened mixed effect.
The invention is further configured to: a filter screen plate is arranged at the air inlet; the filter screen plate is provided with a yielding hole for the extension pipe to pass through.
Through adopting above-mentioned technical scheme, utilize filter screen to filter the air, avoid the foreign matter to enter into in the combustion cylinder from air intlet under the suction effect of fan.
The invention is further configured to: the central position department of rotor plate is provided with the scattered wind post that extends towards the fresh air inlet direction, the surface of scattered wind post is provided with a plurality of scattered wind blades that extend along radial direction along circumference evenly.
Through adopting above-mentioned technical scheme, drive the synchronous rotation of scattered wind post when centrifugal impeller rotates to utilize scattered wind post to constantly toward scattering the flue gas all around, make the flue gas can be fast more effectively with the air mixing.
The invention is further configured to: the air inlet is provided with an air door assembly; the air door component comprises a plurality of air door plates which are arranged at intervals along the horizontal direction vertical to the axial lead of the centrifugal impeller; the wind door plates are parallel to each other and are all obliquely arranged towards the rotating direction of the centrifugal impeller.
By adopting the technical scheme, because the suction force generated by the centrifugal impeller is in the spiral direction at the air inlet, the air door plate which is obliquely arranged is utilized to ensure that the air enters the air inlet cover along the tangential direction of the rotation direction of the centrifugal impeller, so that the air can conveniently enter the air mixing cavity.
The invention is further configured to: the wind door plates extend along the axial lead direction of the centrifugal impeller, and two ends of the wind door plates are respectively hinged on the air inlet cover; the air door assembly also comprises a servo motor for driving one of the air door plates to rotate and a connecting rod mechanism for enabling all the air door plates to synchronously rotate; when all the air inlet plates rotate to the same plane, the air inlet is closed by the air inlet plates.
Through adopting above-mentioned technical scheme, make the wind door plant can realize the regulation of angle under servo motor and link mechanism's drive to change the intake of air inlet in unit interval and the angle when air gets into the air inlet cover, also can close air inlet completely through the wind door plant, prevent that the foreign matter from getting into the air inlet cover through air inlet when the fan is out of work.
The invention is further configured to: and the return pipe is provided with a control butterfly valve for controlling the return of the flue gas.
Through adopting above-mentioned technical scheme, the circulation rate that utilizes the control butterfly valve can control the back flow to adjust the mixing ratio of flue gas and air, or close the back flow completely through the control butterfly valve.
In conclusion, the beneficial effects of the invention are as follows:
1. one end of a return pipe is connected to an air inlet cover, air and smoke are sucked into a fan by the suction force of the fan, the air and the smoke are fully mixed by the rotation action of blades in the fan, and the mixed gas is discharged into a combustion cylinder, so that the effects of diluting oxygen in the air and reducing the emission of nitrogen oxides are achieved; the working efficiency of the fan is not affected, and any mixing device is not required to be additionally arranged in the combustion cylinder, so that the jet combustion effect of flame is ensured;
2. utilize the extension pipe to make the flue gas can directly be sucked to mix the wind intracavity, and the air moves along the helical direction under air inlet blade's effect for produce relative motion between air and the flue gas, the air can be constantly with the flue gas mixture that contacts come in when the motion, makes the mixture more even, has strengthened mixing effect.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an exploded view of the air intake device of the present invention;
FIG. 3 is a schematic structural view of a centrifugal impeller of the present invention;
fig. 4 is an exploded view of the air inlet cover of the present invention;
FIG. 5 is a schematic of the construction of the damper assembly of the present invention.
Reference numerals: 1. a furnace body; 11. a smoke exhaust pipe; 12. a return pipe; 121. an extension pipe; 122. controlling a butterfly valve; 2. a combustion can; 21. a burner port; 3. an air intake device; 31. a fan; 31a, a housing; a1, an air inlet; a11, a filter screen plate; a111, a yielding hole; 31b, a centrifugal impeller; b1, a rotating plate; b11, wind dispersing columns; b111, wind dispersing blades; b2, reinforcing plates; b21, an air inlet hole; b211, air inlet blades; b212, rotating the ring; b3, air outlet blades; b4, a wind mixing cavity; 313. a drive motor; 32. an air inlet cover; 321. an air inlet; 32c, a damper assembly; c1, wind door panel; c2, a servo motor; c3, a linkage mechanism; c31, crank arm; c32, linkage rods; 4. gas valves.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment discloses a flue gas backward flow formula combustor, as shown in fig. 1, including furnace body 1 and a combustion tube 2, the one end of a combustion tube 2 is worn to furnace body 1 in and offered the burner port 21 that is used for spraying flame in the tip, the other end of a combustion tube 2 then is located the furnace body 1 outside and has hot blast blowpipe apparatus 3 and gas valves 4 in end connection. The gas valve group 4 is connected with a plurality of gas pipes (not shown in the figure) in the combustion cylinder 2, sprays gas through the gas pipes, and utilizes the air inlet device 3 to spout the gas in the furnace body 1, and still is provided with the ignition (not shown in the figure) that is used for lighting the gas in the combustion cylinder 2, and the upper end of the furnace body 1 is connected with a vertical smoke exhaust pipe 11 that upwards extends, thereby realizes the combustion work.
As shown in fig. 1 and 2, the air intake device 3 includes a fan 31 connected to an end of the combustion cylinder 2, the fan 31 includes a housing 31a, a centrifugal impeller 31b rotatably connected in the housing 31a, and a driving motor 313 installed outside the housing 31a, an output shaft of the driving motor 313 penetrates into the housing 31a and is fixedly connected with the housing 31b along an axial line of the centrifugal impeller 31b, so that the driving motor 313 drives the centrifugal impeller 31b to rotate with the housing 31 a. The outer casing 31a is horizontally placed in a cylindrical shape, an opening communicated with the combustion cylinder 2 is formed in the upper end of the outer casing 31a along the tangential direction, and an air inlet a1 of the fan 31 is formed in the side wall of the outer casing 31a along the axial lead of the centrifugal impeller 31 b.
As shown in fig. 1 and 4, an air inlet cover 32 is fixedly mounted at an air inlet a1 (see fig. 2), an air inlet 321 is formed at the bottom of the air inlet cover 32, a return pipe 12 is connected to a branch of the smoke exhaust pipe 11, and the other end of the return pipe 12 is connected to a side wall of the air inlet cover 32 facing the air inlet a 1. The air and the flue gas are sucked into the fan 31 by the suction force of the fan 31, the air and the flue gas are fully mixed by the rotation of the centrifugal impeller 31b, and the mixed gas is discharged into the combustion cylinder 2, so that the effects of diluting oxygen in the air and reducing the emission of nitrogen oxides are achieved; and the working efficiency of the fan 31 is not affected, and any mixing device is not needed to be additionally arranged in the combustion cylinder 2, thereby ensuring the jet combustion effect of flame.
As shown in fig. 4, the return pipe 12 is provided with a control butterfly valve 122 for controlling the return of the smoke, and the flow rate of the return pipe 12 can be controlled by using the control butterfly valve 122, so as to adjust the mixing ratio of the smoke and the air, or the return pipe 12 can be completely closed by controlling the butterfly valve 122.
As shown in fig. 2 and 3, the centrifugal impeller 31b includes a circular rotating plate b1 fixedly connected to the output shaft of the driving motor 313, a circular reinforcing plate b2 spaced from the rotating plate b1 along the axial line direction, and a plurality of outlet blades b3 uniformly fixed between the rotating plate b1 and the reinforcing plate b2 along the circumferential direction; the air outlet blade b3 is obliquely arranged at the outer edge of the rotating plate b1, so that an air mixing cavity b4 is formed at the center of the centrifugal impeller 31 b; the center of the reinforcing plate b2 is provided with an air inlet hole b21, and the reinforcing plate b2 slightly arches towards the air inlet a1 at the air inlet hole b21, so that the air inlet a1 is connected with the air inlet hole b21, and the air inlet cover 32 is communicated with the air mixing cavity b 4. When the fan 31 works normally, the rotating centrifugal impeller 31b blows air out from the gap between the air outlet blades b3 by the pushing of the air outlet blade b3, and enters air into the air mixing cavity b4 through the axial air inlet hole b 21; the smoke and the air are pumped into the air mixing chamber b4 through the air inlet a1 and the air inlet b21, and are scattered and mixed under the pushing of the air outlet blade b3, so that the effect of diluting the air is achieved.
As shown in fig. 3 and 4, a plurality of air inlet blades b211 are uniformly welded on the edge of the air inlet hole b21 along the circumferential direction, when the fan 31 works, the air inlet blades b211 generate suction towards the interior of the air mixing cavity b4 through rotation, so that air is accelerated to enter the air mixing cavity b4, and the air enters along the spiral direction under the action of the air inlet blades b211, thereby enhancing the mixing efficiency of the air and the flue gas. The inner side of the air inlet blade b211 is fixedly connected with a rotating ring b212 which has the same axial lead with the rotating plate b1, and one end of the return pipe 12 connected to the air inlet cover 32 is connected with an extension pipe 121 which passes through the rotating ring b212 and extends into the air mixing cavity b4, so that the smoke can be directly sucked into the air mixing cavity b4, and the smoke is prevented from escaping from the air inlet 321 below the air inlet cover 32. The center of the rotating plate b1 is fixedly connected with a wind dispersing column b11 which extends towards the direction of the extending pipe 121, the surface of the wind dispersing column b11 is uniformly fixed with a plurality of wind dispersing blades b111 which extend along the radial direction along the circumferential direction, when the centrifugal impeller 31b rotates, the wind dispersing column b11 is driven to rotate synchronously, so that the smoke is continuously scattered around by the wind dispersing column b11, and the smoke can be more quickly and effectively mixed with air; and the air moves along the spiral direction under the effect of air inlet blade b211 for the air can be constantly mixed by the flue gas of breaing up when moving and come in, makes the mixture more even, has strengthened the mixed effect.
As shown in fig. 3 and 4, the air inlet cover 32 is provided with a filter screen a11 at the air inlet a1, and the middle of the filter screen a11 is provided with an abdicating hole a111 for the extension pipe 121 to pass through; the air is filtered by the filter screen plate a11, so that foreign matters are prevented from entering the combustion cylinder 2 from the air inlet 321 under the suction force of the fan 31.
As shown in fig. 4 and 5, a wind door assembly 32c is installed at the air inlet 321 at the bottom of the wind inlet cover 32; the air door assembly 32c comprises a plurality of air door plates c1 hinged on the air inlet cover 32, a servo motor c2 for driving one of the air door plates c1 to rotate, and a link mechanism c3 for enabling all the air door plates c1 to rotate synchronously. The air flap plates c1 extend along the axial lead direction of the centrifugal impeller 31b, the middle of the air flap plate c1 is fixedly connected with a rotating shaft (not shown in the figure), two ends of the rotating shaft are respectively rotatably connected to the end walls at two sides of the air inlet cover 32, and the end parts of the rotating shaft penetrate outwards; the link mechanism c3 comprises a crank arm c31 fixedly connected to the end of each air door panel c1 penetrating out of the air inlet hood 32, a linkage rod c32 hinged to the end of the crank arm c31, a plurality of crank arms c31 fixedly connected to the end of the air door panel c1 connected with the servo motor c2, and each crank arm c31 is connected with the crank arms c31 of other air door panels c1 through linkage rods c32 to form a movable parallelogram structure, so that linkage between the air door panels c1 is realized.
As shown in fig. 4 and 5, the damper plates c1 are parallel to each other and are arranged at equal intervals in the horizontal direction perpendicular to the axial line of the centrifugal impeller 31b, and when all the damper plates c1 rotate to the horizontal plane, the air inlet 321 is closed by the damper plates c 1. The air flap plate c1 can be driven by the servo motor c2 and the linkage mechanism c3 to adjust the angle, so as to change the air inlet amount of the air inlet 321 in unit time and the angle of air entering the air inlet hood 32, and the air inlet 321 can be completely closed by the air flap plate c1, thereby preventing foreign matters from entering the air inlet hood 32 through the air inlet 321 when the fan 31 does not work. And because the suction force generated by the centrifugal impeller 31b is in the spiral direction at the air inlet hole b21, the air door plate c1 is controlled by the servo motor c2 to be obliquely arranged towards the rotating direction of the centrifugal impeller 31b, so that the air can enter the air inlet cover 32 along the tangential direction of the rotating direction of the centrifugal impeller 31b, and the air can conveniently enter the air mixing cavity b 4.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (9)
1. A flue gas reflux type burner comprises a furnace body (1) and a combustion cylinder (2), wherein one end of the combustion cylinder (2) penetrates into the furnace body (1) and is provided with a combustion port (21) at the end part, the other end of the combustion cylinder (2) is positioned outside the furnace body (1) and is provided with an air inlet device (3) and a gas valve group (4) at the end part; a plurality of gas pipes connected with the gas valve group (4) and an ignition device used for igniting gas are arranged in the combustion cylinder (2); a smoke exhaust pipe (11) is arranged on the furnace body (1); the method is characterized in that: the air inlet device (3) comprises a fan (31) connected to the combustion cylinder (2) and an air inlet cover (32) arranged at an air inlet (a1) of the fan (31), and an air inlet (321) is formed in the bottom of the air inlet cover (32); a return pipe (12) is arranged on the smoke exhaust pipe (11), and the return pipe (12) is connected to the side wall of the air inlet cover (32).
2. The flue gas recirculation burner of claim 1, wherein: the fan (31) comprises a shell (31a), a centrifugal impeller (31b) rotationally connected in the shell (31a), and a driving motor (313) used for driving the centrifugal impeller (31b) to rotate; the centrifugal impeller (31b) comprises a rotating plate (b1) fixedly connected with an output shaft of the driving motor (313), reinforcing plates (b2) arranged at intervals along the axial lead direction with the rotating plate (b1), and a plurality of air outlet blades (b3) uniformly arranged between the rotating plate (b1) and the reinforcing plates (b2) along the circumferential direction; the air outlet blades (b3) are all arranged at the outer edge of the rotating plate (b1), so that an air mixing cavity (b4) is formed in the center of the centrifugal impeller (31 b); an air inlet hole (b21) is formed in the center of the reinforcing plate (b2), and an air inlet (a1) which is communicated with the air mixing cavity (b4) and the air inlet cover (32) is formed in the position, corresponding to the air inlet hole (b21), of the shell (31 a).
3. The flue gas recirculation burner of claim 2, wherein: the edge of the air inlet hole (b21) is uniformly provided with a plurality of air inlet blades (b211) along the circumferential direction, and the air inlet blades (b211) generate suction towards the interior of the air mixing cavity (b4) through rotation when the fan (31) works.
4. The flue gas recirculation burner of claim 3, wherein: the inner side of the air inlet blade (b211) is fixedly connected with a rotating ring (b212) which has the same axial lead as the rotating plate (b 1); one end of the return pipe (12) connected to the air inlet cover (32) is provided with an extension pipe (121) which penetrates through the rotating ring (b212) and extends into the air mixing cavity (b 4).
5. The flue gas recirculation burner of claim 4, wherein: a filter screen plate (a11) is arranged at the air inlet (a 1); the filter screen plate (a11) is provided with abdicating holes (a111) for the extension pipes (121) to pass through.
6. The flue gas recirculation burner of claim 2, wherein: the center of the rotating plate (b1) is provided with a wind dispersing column (b11) extending towards the direction of the air inlet (b21), and the surface of the wind dispersing column (b11) is uniformly provided with a plurality of wind dispersing blades (b111) extending along the radial direction along the circumferential direction.
7. The flue gas recirculation burner of claim 1, wherein: an air door assembly (322) is arranged at the air inlet (321); the air door assembly (322) comprises a plurality of air door plates (c1) which are arranged at intervals along the horizontal direction vertical to the axial lead of the centrifugal impeller (31 b); the air door plates (c1) are parallel to each other and are all obliquely arranged towards the rotating direction of the centrifugal impeller (31 b).
8. The flue gas recirculation burner of claim 7, wherein: the air door plates (c1) extend along the axial lead direction of the centrifugal impeller (31b), and two ends of the air door plates (c1) are respectively hinged on the air inlet cover (32); the air door assembly (322) further comprises a servo motor (c2) for driving one of the air door plates (c1) to rotate, and a link mechanism (c3) for enabling all the air door plates (c1) to rotate synchronously; when all the damper panels (c1) rotate to the same plane, the air inlet (321) is closed by the damper panel (c 1).
9. The flue gas recirculation burner of claim 1, wherein: the return pipe (12) is provided with a control butterfly valve (122) for controlling the return of the smoke.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911055658.1A CN110805897B (en) | 2019-10-31 | 2019-10-31 | Flue gas backward flow formula combustor |
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|---|---|---|---|
| CN201911055658.1A CN110805897B (en) | 2019-10-31 | 2019-10-31 | Flue gas backward flow formula combustor |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2339796Y (en) * | 1998-07-02 | 1999-09-22 | 蔡亚洲 | Electric fan |
| JP2000337296A (en) * | 1999-05-31 | 2000-12-05 | Matsushita Electric Ind Co Ltd | Blower device |
| CN2679542Y (en) * | 2003-12-11 | 2005-02-16 | 曹凤桐 | Blowing cooker hood |
| US20080285376A1 (en) * | 2005-12-23 | 2008-11-20 | Gomes De Oliveira Joao Carlos | Mixer Having Multiple Gas Inlets |
| JP4343037B2 (en) * | 2004-06-14 | 2009-10-14 | 東邦瓦斯株式会社 | Hot air generator |
| CN102527270A (en) * | 2010-12-09 | 2012-07-04 | 周玉春 | Injection mixing device |
| CN102564067A (en) * | 2010-12-10 | 2012-07-11 | 天华化工机械及自动化研究设计院 | Rotary cylindrical drier catalyst drying method and equipment |
| CN102793027A (en) * | 2012-08-17 | 2012-11-28 | 诸暨市乐叶农业机械有限公司 | Far infrared tea withering machine |
| CN204933736U (en) * | 2015-09-09 | 2016-01-06 | 江苏群鑫粉体科技股份有限公司 | A kind of turbine airflow grader tile wind-guiding type rotating cage |
| CN206037028U (en) * | 2016-08-17 | 2017-03-22 | 阿克塞县泰戈化工发展有限公司 | Combustion -supporting device |
| CN108889623A (en) * | 2018-07-11 | 2018-11-27 | 阜阳丰达机电设备有限公司 | A kind of pipe tobacco breaks up wind sorting machine |
| CN208382161U (en) * | 2018-06-05 | 2019-01-15 | 江阴创捷电气设备有限公司 | A kind of burner convenient for changing air distribution ratio |
| CN109579009A (en) * | 2019-01-16 | 2019-04-05 | 唐山冀东石油机械有限责任公司 | The burner apparatus of low-nitrogen oxide discharging |
-
2019
- 2019-10-31 CN CN201911055658.1A patent/CN110805897B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2339796Y (en) * | 1998-07-02 | 1999-09-22 | 蔡亚洲 | Electric fan |
| JP2000337296A (en) * | 1999-05-31 | 2000-12-05 | Matsushita Electric Ind Co Ltd | Blower device |
| CN2679542Y (en) * | 2003-12-11 | 2005-02-16 | 曹凤桐 | Blowing cooker hood |
| JP4343037B2 (en) * | 2004-06-14 | 2009-10-14 | 東邦瓦斯株式会社 | Hot air generator |
| US20080285376A1 (en) * | 2005-12-23 | 2008-11-20 | Gomes De Oliveira Joao Carlos | Mixer Having Multiple Gas Inlets |
| CN102527270A (en) * | 2010-12-09 | 2012-07-04 | 周玉春 | Injection mixing device |
| CN102564067A (en) * | 2010-12-10 | 2012-07-11 | 天华化工机械及自动化研究设计院 | Rotary cylindrical drier catalyst drying method and equipment |
| CN102793027A (en) * | 2012-08-17 | 2012-11-28 | 诸暨市乐叶农业机械有限公司 | Far infrared tea withering machine |
| CN204933736U (en) * | 2015-09-09 | 2016-01-06 | 江苏群鑫粉体科技股份有限公司 | A kind of turbine airflow grader tile wind-guiding type rotating cage |
| CN206037028U (en) * | 2016-08-17 | 2017-03-22 | 阿克塞县泰戈化工发展有限公司 | Combustion -supporting device |
| CN208382161U (en) * | 2018-06-05 | 2019-01-15 | 江阴创捷电气设备有限公司 | A kind of burner convenient for changing air distribution ratio |
| CN108889623A (en) * | 2018-07-11 | 2018-11-27 | 阜阳丰达机电设备有限公司 | A kind of pipe tobacco breaks up wind sorting machine |
| CN109579009A (en) * | 2019-01-16 | 2019-04-05 | 唐山冀东石油机械有限责任公司 | The burner apparatus of low-nitrogen oxide discharging |
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