CN112577062B - Ash conveying device for secondary air box - Google Patents
Ash conveying device for secondary air box Download PDFInfo
- Publication number
- CN112577062B CN112577062B CN202011348639.0A CN202011348639A CN112577062B CN 112577062 B CN112577062 B CN 112577062B CN 202011348639 A CN202011348639 A CN 202011348639A CN 112577062 B CN112577062 B CN 112577062B
- Authority
- CN
- China
- Prior art keywords
- secondary air
- fixed
- air box
- ash conveying
- fly ash
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002956 ash Substances 0.000 claims abstract description 96
- 239000010881 fly ash Substances 0.000 claims abstract description 53
- 238000005192 partition Methods 0.000 claims abstract description 10
- 238000007790 scraping Methods 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention discloses an ash conveying device of a secondary air box, which comprises a secondary air box body, wherein the secondary air box body is divided into a plurality of compartments, a partition plate is arranged between every two adjacent compartments, secondary air inlets are formed in two sides of the secondary air box body, a plurality of uniformly distributed burner nozzles are formed in the front end of the secondary air box body, a plurality of uniformly distributed fly ash collecting boxes are fixed at the bottom of the secondary air box body, and the top of each fly ash collecting box is communicated with the inside of the bottom of the secondary air box body; according to the invention, the fly ash collecting box is arranged at a certain angle, so that fly ash can automatically flow into the ash conveying pipeline, the filter plate is taken down by sliding the sliding block on the sliding groove, and the clamping block is separated from the clamping groove, so that the upper filter plate and the lower filter plate are separated, and the filter plate is cleaned. The secondary air box body is divided into a plurality of compartments through the partition plates, so that a plurality of independent air distribution air boxes are formed, independent adjustment of secondary air is realized, and interference of mutual adjustment in one air box is avoided.
Description
Technical Field
The invention relates to the technical field of bellows, in particular to a secondary bellows ash conveying device.
Background
The secondary air box is an important component part in the combustion system of the coal-fired boiler, and air required by fuel combustion is distributed to each layer of burner through the secondary air box so as to ensure the stability of combustion.
Fly ash in the secondary air is continuously deposited in the secondary air box, and the thickness is gradually increased, so that the local part of the cyclone air duct of the burner is buried, and the cyclone air adjusting baffle is blocked and cannot be adjusted. A large amount of ash is accumulated, so that the nozzle is blocked, and the normal rotational flow state of the rotational flow wind field of the burner is destroyed. Turbulence is formed, and the air quantity is not uniformly matched with the input quantity of the pulverized coal, so that unstable combustion is realized. Affecting the safe and economical operation of the boiler as a whole.
Fly ash is deposited continuously, so that the volume in the secondary air box is reduced, the effect of reducing and expanding the secondary air is gradually weakened, and the fly ash which enters subsequently enters the cyclone air duct of the burner at a higher speed and then enters the hearth in a high-speed rotating and diffusing state. Fly ash with high specific gravity passes through the burner nozzle at high speed under the action of the rotating centrifugal force to seriously scour the water-cooled wall nozzle pipe ring, so that the pipeline is worn and leaked, and great potential safety hazard is brought to the operation of the boiler.
The existing secondary air box ash conveying device lacks a filter plate for blocking large-particle fly ash in advance, so that an ash conveying pipeline is easy to be blocked, and the ash conveying efficiency and effect are affected; the wind speed of a secondary air box of the existing secondary air box ash conveying device is reduced, so that a large amount of accumulated ash is caused, the accumulated ash cannot be discharged, the secondary air conveying is affected, and equipment is abraded; the existing secondary air box ash conveying device cannot timely clean fly ash adhered to the inner wall of an ash conveying pipeline, so that the ash conveying pipeline is easy to be blocked, the ash conveying process is affected, and the boiler combustion is affected.
In order to solve the above-mentioned defect, a technical scheme is provided.
Disclosure of Invention
The invention aims to provide a secondary air box ash conveying device.
The technical problems to be solved by the invention are as follows:
the existing secondary air box ash conveying device lacks a filter plate for blocking large-particle fly ash in advance, so that an ash conveying pipeline is easy to be blocked, and the ash conveying efficiency and effect are affected; the wind speed of a secondary air box of the existing secondary air box ash conveying device is reduced, so that a large amount of accumulated ash is caused, the accumulated ash cannot be discharged, the secondary air conveying is affected, and equipment is abraded; the existing secondary air box ash conveying device cannot timely clean fly ash adhered to the inner wall of an ash conveying pipeline, so that the ash conveying pipeline is easy to be blocked, the ash conveying process is affected, and the boiler combustion is affected.
The aim of the invention can be achieved by the following technical scheme:
the secondary air box ash conveying device comprises a secondary air box body, wherein the secondary air box body is divided into a plurality of compartments, a partition plate is arranged between every two adjacent compartments, secondary air inlets are formed in two sides of the secondary air box body, a plurality of uniformly distributed burner nozzles are formed in the front end of the secondary air box body, a plurality of uniformly distributed fly ash collecting boxes are fixed at the bottom of the secondary air box body, the top of each fly ash collecting box is communicated with the inside of the bottom of the secondary air box body, an ash conveying pipeline is fixed at the bottom of each fly ash collecting box, and ash conveying valves are arranged on the ash conveying pipelines;
the inner bottom end of the secondary air box body is provided with a plurality of filter plate bodies which are uniformly distributed, the number of the filter plate bodies is the same as that of the compartments and corresponds to that of the compartments one by one, the filter plate bodies comprise an upper filter plate and a lower filter plate, one end of the upper filter plate is connected with one end of the lower filter plate through a hinge, two clamping blocks which are symmetrically distributed are fixed on one side of the upper filter plate, two clamping grooves which are symmetrically distributed are formed on one side of the lower filter plate, symmetrically distributed sliding blocks are fixed on the front end and the rear end wall of the lower filter plate, a plurality of symmetrically distributed sliding grooves are formed on the front end wall and the rear end wall of the secondary air box body, and the sliding grooves are matched with the sliding blocks and are in sliding connection;
the fly ash collecting box's rear end wall is fixed with the motor room, the inside top of motor room is fixed with the rotation motor, the output of rotation motor is fixed with the axis of rotation, the outside of axis of rotation is fixed with a plurality of cover that rotates, a plurality of cover that rotates is upper and lower evenly distributed and all is located the inside of ash conveying pipeline in the axis of rotation, the outside of rotating the cover is fixed with a plurality of fixing bases along circumference evenly distributed, the fixing base is kept away from the one end of rotating the cover and is equipped with the slip cap, the one end and the fixing base hinged joint of slip cap, the other end of slip cap is equipped with the slide bar, the one end of slide bar is located the inside of slip cap and with slip cap sliding connection, the other end of slide bar is fixed with the arc scraper blade, one side that the slide bar was kept away from to the arc scraper blade contacts with the inner wall of ash conveying pipeline, the extension spring has been cup jointed in the outside of slide bar, the both ends of extension spring are fixed with arc scraper blade and slip cap respectively.
Further, through holes are formed in the centers of two sides of the partition board in a penetrating mode, and the end portions of the partition board are fixed with the inner wall of the secondary air box body respectively.
Further, the number of the burner nozzles is the same as the number of the compartments and corresponds to the number of the compartments one by one, the cross section of the side surface of the fly ash collecting box is in a right trapezoid shape, the included angle between the inclined edge of the right trapezoid shape and the horizontal line is forty degrees, the number of the fly ash collecting boxes is the same as the number of the compartments and corresponds to the number of the compartments one by one, the top of the ash conveying pipeline is communicated with the inside of the bottom of the fly ash collecting box, the number of the ash conveying pipelines is the same as the number of the fly ash collecting boxes and corresponds to the number of the ash conveying pipelines one by one, and the number of the ash conveying valves is the same as the number of the ash conveying pipelines one by one.
Further, a plurality of evenly distributed upper filter holes are formed in the upper filter plate, a plurality of evenly distributed lower filter holes are formed in the lower filter plate, and the aperture of each lower filter hole is smaller than that of each upper filter hole.
Further, the fixture block is located the position that the hinge was kept away from to the edge of last filter, and the draw-in groove is located the position that the hinge was kept away from to the edge of lower filter, draw-in groove and fixture block looks adaptation.
Further, the both sides of fixing base are fixed with the dead lever of symmetric distribution, and the screw thread cover has been cup jointed in the one end outside that the fixing base was kept away from to the dead lever, and the one end that the dead lever was kept away from to the screw thread cover is fixed with the fixed block, and two symmetric distribution's fixed slot has been seted up to one side that the arc scraper blade is close to the rotation cover, and the fixed block is located the inside of fixed slot and fixed block and fixed slot looks adaptation.
Further, the bottom of axis of rotation passes the bottom of motor room and rotates with the motor room to be connected, and the bottom of axis of rotation is located the inside of ash conveying pipeline and is located the top of ash conveying valve.
Further, the fixing rod is provided with external threads on the outer side of one end far away from the fixing seat, internal threads are arranged in the threaded sleeve, and the threaded sleeve is in threaded connection with the fixing rod.
The invention has the beneficial effects that:
the fly ash collecting box is arranged at a certain angle, so that fly ash can flow into the ash conveying pipeline automatically, secondary air enters the secondary air box body from the secondary air inlet and is blown to the boiler through the burner nozzle, the fly ash in the secondary air firstly passes through the filter plate body and falls on the filter plate body, then enters the fly ash collecting box through the filter plate body, and finally is conveyed to the ash warehouse through the ash conveying pipeline.
The filter plate body is taken down through sliding of the sliding block on the sliding groove, and the clamping block is separated from the clamping groove, so that the upper filter plate and the lower filter plate are separated, and the filter plate body is cleaned.
The extension length of the fixing rod in the thread bush can be adjusted by rotating the thread bush, and the fixing rod is matched with the sliding rod to slide in the sliding bush, so that the distance between the arc scraping plate and the fixing seat is adjusted, the ash conveying pipeline with different inner diameters is adapted, and the application range is wider. When the inner wall of ash conveying pipeline is adhered with the flying ash, can hinder the efficiency that the flying ash got into ash storehouse, continue to pile up and be possible to directly plug up ash conveying pipeline, start rotating motor this moment, drive its output shaft and drive the axis of rotation and rotate, the axis of rotation drives the cover rotation, and the cover rotation drives the slip cap rotation on the fixing base, and the slip cap drives the arc scraper blade on the slide bar and clears up the flying ash of adhesion on the ash conveying pipeline inner wall, avoids remaining flying ash to influence ash conveying efficiency.
The secondary air box body is divided into a plurality of compartments through the partition plates, so that a plurality of independent air distribution air boxes are formed, independent adjustment of secondary air is realized, and interference of mutual adjustment in one air box is avoided.
Drawings
The invention is described in further detail below with reference to the drawings and the specific embodiments.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a side elevational view of the present invention;
FIG. 4 is a schematic view of the structure of the separator of the present invention;
FIG. 5 is a schematic view showing the structure of the filter plate of the present invention in an opened state;
FIG. 6 is a schematic view showing the structure of the filter plate in the closed state according to the present invention;
FIG. 7 is an enlarged view of the invention at A in FIG. 3;
FIG. 8 is an interior top view of the ash handling line of the present invention;
fig. 9 is an enlarged view of the present invention at B in fig. 8.
In the figure, 1, a secondary air box body; 11. a partition plate; 1101. a through hole; 12. a secondary air inlet; 13. a burner spout; 14. a fly ash collection box; 15. an ash conveying pipeline; 16. an ash conveying valve; 2. a filter plate body; 21. a filter plate is arranged; 2101. an upper filter hole; 22. a lower filter plate; 2201. a lower filter hole; 23. a hinge; 24. a clamping block; 25. a clamping groove; 26. a slide block; 3. a motor chamber; 301. a rotating motor; 302. a rotating shaft; 303. a rotating sleeve; 304. a fixing seat; 305. a sliding sleeve; 306. a slide bar; 307. an arc-shaped scraping plate; 308. a telescopic spring; 309. a fixed rod; 310. a thread sleeve; 311. a fixed block; 312. a fixing groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-9, the present invention provides a technical solution:
the utility model provides an ash conveying device of overgrate air case, including overgrate air case body 1, overgrate air case body 1 is cut apart into a plurality of compartments, be equipped with baffle 11 between the adjacent compartment, the tip of baffle 11 is fixed with the inner wall of overgrate air case body 1, keep apart through baffle 11 between the adjacent compartment, overgrate air entry 12 has all been seted up to the both sides of overgrate air case body 1, the center department of both sides of baffle 11 runs through and is equipped with through-hole 1101 for connect a plurality of compartments and provide the passageway of flowing for the overgrate air, overgrate air entry 12 provides the overgrate air of boiler combustion, overgrate air case body 1 is connected with external wind source through overgrate air entry 12, it provides sufficient wind source to set up two overgrate air entry 12 of symmetric distribution for boiler combustion; the end of the baffle 11 is fixed with the inner wall of the secondary air box body 1 respectively, a plurality of evenly distributed burner nozzles 13 are arranged at the front end of the secondary air box body 1, the number of the burner nozzles 13 is the same as that of the compartments and corresponds to each other one by one, a plurality of evenly distributed fly ash collecting boxes 14 are fixed at the bottom of the secondary air box body 1, the side cross section of each fly ash collecting box 14 is right trapezoid, the included angle between the inclined edge of each right trapezoid and the horizontal line is forty degrees, the fly ash collecting boxes 14 are arranged to have a certain angle, the fly ash can automatically flow to the pipe orifice of the ash conveying pipeline 15 so as to be convenient for collection, the number of the fly ash collecting boxes 14 is the same as that of the compartments and corresponds to each other one by one, the top of the fly ash collecting boxes 14 is communicated with the inside of the bottom of the secondary air box body 1, the top of each ash conveying pipeline 15 is communicated with the inside the bottom of the fly ash collecting boxes 14, the number of the fly ash conveying pipeline 15 is the same as that of the fly ash collecting boxes 14 and corresponds to each other one by one, the ash conveying pipeline 15 is provided with an ash conveying valve 16, the ash conveying pipeline 16 is used for controlling the ash conveying pipeline 15 and the ash quantity of the ash collecting boxes to be connected to the ash conveying pipeline 15 through the ash collecting pipeline 15, and the ash collecting pipeline 15 is connected to the ash collecting pipeline 15.
The inside bottom of overgrate air case body 1 is equipped with a plurality of evenly distributed's filter body 2, the quantity of filter body 2 is the same and the one-to-one with the quantity of compartment, filter body 2 includes filter 21 and lower filter 22, the one end of last filter 21 and the one end of lower filter 22 pass through hinge 23 hinged joint, set up a plurality of evenly distributed's last filtration pore 2101 on the last filter 21, set up a plurality of evenly distributed's lower filtration pore 2201 on the lower filter 22, the aperture of lower filtration pore 2201 is less than the aperture of last filtration pore 2101, one side that goes up the filter 21 and is close to lower filter 22 is fixed with two symmetrically distributed's fixture block 24, fixture block 24 is located the position that the edge of last filter 21 kept away from hinge 23, two symmetrically distributed's draw-in groove 25 have been seted up to one side that lower filter 22 is close to last filter 21, the draw-in groove 25 is located the position that the hinge 23 was kept away from to lower filter 22, draw-in groove 25 and fixture block 24 looks adaptation, be used for with last filter 21 and lower filter 22 block together, play the effect of fixed filter body 2, the front end and the rear end wall of lower filter 22 are fixed with the slider body 26 of symmetry distribution, the filter box is less than the filter 1, the filter 1 is connected with the filter chute of setting up and is convenient for setting up and is opened in the filter box 2, the filter 21 is connected with the filter chute that sets up and is more than the filter 21 down in the filter chute is convenient for setting up and filter 21 down and has been opened.
The rear end wall of the fly ash collecting box 14 is fixed with a motor chamber 3, the inner top end of the motor chamber 3 is fixed with a rotary motor 301, the output end of the rotary motor 301 is fixed with a rotary shaft 302, the bottom end of the rotary shaft 302 passes through the bottom of the motor chamber 3 and is rotationally connected with the motor chamber 3, the bottom end of the rotary shaft 302 is positioned in the ash conveying pipeline 15 and above the ash conveying valve 16, the outer side of the rotary shaft 302 is fixed with a plurality of rotary sleeves 303, the plurality of rotary sleeves 303 are uniformly distributed on the rotary shaft 302 up and down and are all positioned in the ash conveying pipeline 15, the outer side of the rotary sleeves 303 is fixed with a plurality of fixed seats 304 uniformly distributed along the circumference, one end of the fixed seat 304 far away from the rotary sleeves 303 is provided with a sliding sleeve 305, one end of the sliding sleeve 305 is hinged with the fixed seat 304, the other end of the sliding sleeve 305 is provided with a sliding rod 306, one end of the sliding rod 306 is positioned in the sliding sleeve 305 and is slidingly connected with the sliding sleeve 305, the other end of slide bar 306 is fixed with arc scraper blade 307, one side that the slide bar 306 was kept away from to arc scraper blade 307 contacts with the inner wall of ash conveying pipeline 15, telescopic spring 308 has been cup jointed in the outside of slide bar 306, telescopic spring 308's both ends are fixed with arc scraper blade 307 and slip cap 305 respectively, the both sides of fixing base 304 are fixed with symmetrical distribution's dead lever 309, the one end outside that the dead lever 309 kept away from fixing base 304 has cup jointed screw sleeve 310, the one end outside that the dead lever 309 kept away from fixing base 304 is equipped with the external screw thread, screw sleeve 310 is equipped with the internal screw thread, screw sleeve 310 and dead lever 309 threaded connection, the one end that the screw sleeve 310 kept away from the dead lever 309 is fixed with fixed block 311, two symmetrical distribution's fixed slot 312 has been seted up to one side that the arc scraper blade 307 is close to rotation cover 303, fixed block 311 is located the inside of fixed slot 312 and fixed block 311 looks adaptation with fixed slot 312.
Working principle:
when the invention is used, secondary air enters the secondary air box body 1 from the secondary air inlet 12 and is blown to the boiler through the burner nozzle 13, fly ash in the secondary air firstly passes through the filter plate body 2 and falls on the filter plate body 2, then enters the fly ash collecting box 14 through the filter plate body 2, and the fly ash collecting box 14 is arranged at a certain angle, so that the fly ash can automatically flow into the ash conveying pipeline 15, and finally is conveyed to an ash warehouse through the ash conveying pipeline 15.
When the fly ash on the filter plate body 2 reaches saturation, the filter plate body 2 is taken out by sliding the sliding blocks 26 on the sliding grooves, and the clamping blocks 24 leave the clamping grooves 25, so that the upper filter plate 21 and the lower filter plate 22 are separated, and the filter plate body 2 is cleaned.
When the inner wall of the ash conveying pipeline 15 is adhered with the fly ash, the efficiency of the fly ash entering the ash warehouse can be hindered, the ash conveying pipeline 15 is possibly blocked directly by continuous accumulation, at the moment, the rotating motor 301 is started, the output shaft of the rotating motor is driven to drive the rotating shaft 302 to rotate, the rotating shaft 302 drives the rotating sleeve 303 to rotate, the rotating sleeve 303 drives the sliding sleeve 305 on the fixed seat 304 to rotate, the sliding sleeve 305 drives the arc scraping plate 307 on the sliding rod 306 to clean the fly ash adhered on the inner wall of the ash conveying pipeline 15, and the residual fly ash is prevented from affecting the ash conveying efficiency. Meanwhile, the extension length of the fixing rod 309 in the threaded sleeve 310 can be adjusted by rotating the threaded sleeve 310, and the fixing rod 306 can slide in the sliding sleeve 305, so that the distance between the arc-shaped scraper 307 and the fixing seat 304 is adjusted, the ash conveying pipeline 15 with different inner diameters can be adapted, and the application range is wider.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
Claims (4)
1. The secondary air box ash conveying device is characterized by comprising a secondary air box body (1), wherein the secondary air box body (1) is divided into a plurality of compartments, a partition plate (11) is arranged between adjacent compartments, secondary air inlets (12) are formed in two sides of the secondary air box body (1), a plurality of uniformly distributed combustor nozzles (13) are formed in the front end of the secondary air box body (1), a plurality of uniformly distributed fly ash collecting boxes (14) are fixed at the bottom of the secondary air box body (1), the top of each fly ash collecting box (14) is communicated with the inside of the bottom of the secondary air box body (1), an ash conveying pipeline (15) is fixed at the bottom of each fly ash collecting box (14), and an ash conveying valve (16) is arranged on each ash conveying pipeline (15);
the inside bottom of overgrate air case body (1) is equipped with a plurality of evenly distributed filter plate bodies (2), the quantity of filter plate bodies (2) is the same and one-to-one with the quantity of compartment, filter plate body (2) are including last filter (21) and lower filter (22), the one end of last filter (21) and the one end of lower filter (22) pass through hinge (23) hinged joint, one side that goes up filter (21) and is close to lower filter (22) is fixed with two fixture blocks (24) of symmetric distribution, two draw-in grooves (25) of symmetric distribution have been seted up to one side that lower filter (22) is close to last filter (21), the front end and the back end wall of lower filter (22) are fixed with slider (26) of symmetric distribution, a plurality of symmetric distribution's spouts have been seted up to the front and back end wall of overgrate air case body (1), spout and slider (26) looks adaptation and sliding connection;
the fly ash collecting box (14) is characterized in that a motor chamber (3) is fixed on the rear end wall of the fly ash collecting box (14), a rotating motor (301) is fixed on the inner top end of the motor chamber (3), a rotating shaft (302) is fixed at the output end of the rotating motor (301), a plurality of rotating sleeves (303) are fixed on the outer side of the rotating shaft (302), the rotating sleeves (303) are uniformly distributed up and down and are all located in the inner wall of the ash conveying pipeline (15), a plurality of fixing seats (304) which are uniformly distributed along the circumference are fixed on the outer side of the rotating sleeves (303), a sliding sleeve (305) is arranged at one end of each fixing seat (304) far away from the rotating sleeve (303), one end of each sliding sleeve (305) is hinged with the fixing seat (304), a sliding rod (306) is arranged at the other end of each sliding sleeve (305), one end of each sliding rod (306) is located in the sliding sleeve (305) and is in sliding connection with the sliding sleeve (305), an arc-shaped scraping plate (307) is fixed at the other end of each sliding rod (306), one side of each arc-shaped scraping plate (307) far away from each sliding rod (306) is contacted with the inner wall of the ash conveying pipeline (15), a telescopic spring (308) is sleeved on the outer side of each sliding sleeve (308), and two ends of each telescopic spring (308) are respectively fixed with the sliding sleeve (305) in a sliding sleeve;
the number of the burner nozzles (13) is the same as the number of the compartments and corresponds to each other one by one, the cross section of the side surface of the fly ash collecting box (14) is in a right trapezoid shape, the included angle between the inclined edge of the right trapezoid shape and the horizontal line is forty degrees, the number of the fly ash collecting boxes (14) is the same as the number of the compartments and corresponds to each other one by one, the top of the ash conveying pipeline (15) is communicated with the inside of the bottom of the fly ash collecting box (14), the number of the ash conveying pipelines (15) is the same as the number of the fly ash collecting boxes (14) and corresponds to each other one by one, and the number of the ash conveying valves (16) is the same as the number of the ash conveying pipelines (15) and corresponds to each other one;
two symmetrically distributed fixing rods (309) are fixed on two sides of the fixing seat (304), a threaded sleeve (310) is sleeved on the outer side of one end, far away from the fixing seat (304), of the fixing rod (309), a fixing block (311) is fixed on one end, far away from the fixing rod (309), of the threaded sleeve (310), two symmetrically distributed fixing grooves (312) are formed in one side, close to the rotating sleeve (303), of the arc-shaped scraping plate (307), the fixing block (311) is located in the fixing grooves (312), and the fixing block (311) is matched with the fixing grooves (312);
the bottom end of the rotating shaft (302) penetrates through the bottom of the motor chamber (3), the rotating shaft (302) is rotationally connected with the motor chamber (3), and the bottom end of the rotating shaft (302) is positioned in the ash conveying pipeline (15) and above the ash conveying valve (16);
the outer side of one end, far away from the fixed seat (304), of the fixed rod (309) is provided with external threads, the inside of the thread bush (310) is provided with internal threads, and the thread bush (310) is in threaded connection with the fixed rod (309).
2. The ash conveying device of the secondary air box according to claim 1, wherein through holes (1101) are formed in the centers of two sides of the partition plate (11) in a penetrating mode, and the end portions of the partition plate (11) are respectively fixed with the inner wall of the secondary air box body (1).
3. The secondary air box ash conveying device according to claim 1, wherein a plurality of evenly distributed upper filter holes (2101) are formed in the upper filter plate (21), a plurality of evenly distributed lower filter holes (2201) are formed in the lower filter plate (22), and the pore diameter of the lower filter holes (2201) is smaller than that of the upper filter holes (2101).
4. The secondary air box ash conveying device according to claim 1, wherein the clamping block (24) is located at a position where the edge of the upper filter plate (21) is far away from the hinge (23), the clamping groove (25) is located at a position where the edge of the lower filter plate (22) is far away from the hinge (23), and the clamping groove (25) is matched with the clamping block (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011348639.0A CN112577062B (en) | 2020-11-26 | 2020-11-26 | Ash conveying device for secondary air box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011348639.0A CN112577062B (en) | 2020-11-26 | 2020-11-26 | Ash conveying device for secondary air box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112577062A CN112577062A (en) | 2021-03-30 |
| CN112577062B true CN112577062B (en) | 2024-02-23 |
Family
ID=75123655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011348639.0A Active CN112577062B (en) | 2020-11-26 | 2020-11-26 | Ash conveying device for secondary air box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112577062B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482427A (en) * | 2021-06-23 | 2021-10-08 | 中国能源建设集团广东省电力设计研究院有限公司 | Cluster type ash storehouse |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06265135A (en) * | 1993-03-12 | 1994-09-20 | Babcock Hitachi Kk | Air supply tube for fluidized-bed boiler |
| WO2010081273A1 (en) * | 2008-12-30 | 2010-07-22 | 上海锅炉厂有限公司 | Small air box of combustor |
| TW201115080A (en) * | 2009-09-24 | 2011-05-01 | Magaldi Ind Srl | System for extraction and transport of light ashes by means of a steel belt conveyor |
| CN109248509A (en) * | 2018-09-17 | 2019-01-22 | 中交二公局东萌工程有限公司 | A kind of mixing station dust-extraction unit |
| CN209355294U (en) * | 2018-11-22 | 2019-09-06 | 西安交通大学 | A kind of secondary air distribution structure reducing layer burner unburned carbon in flue dust |
| CN211060103U (en) * | 2019-11-04 | 2020-07-21 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | Front and back wall opposed firing boiler secondary bellows ash conveying device |
-
2020
- 2020-11-26 CN CN202011348639.0A patent/CN112577062B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06265135A (en) * | 1993-03-12 | 1994-09-20 | Babcock Hitachi Kk | Air supply tube for fluidized-bed boiler |
| WO2010081273A1 (en) * | 2008-12-30 | 2010-07-22 | 上海锅炉厂有限公司 | Small air box of combustor |
| TW201115080A (en) * | 2009-09-24 | 2011-05-01 | Magaldi Ind Srl | System for extraction and transport of light ashes by means of a steel belt conveyor |
| CN109248509A (en) * | 2018-09-17 | 2019-01-22 | 中交二公局东萌工程有限公司 | A kind of mixing station dust-extraction unit |
| CN209355294U (en) * | 2018-11-22 | 2019-09-06 | 西安交通大学 | A kind of secondary air distribution structure reducing layer burner unburned carbon in flue dust |
| CN211060103U (en) * | 2019-11-04 | 2020-07-21 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | Front and back wall opposed firing boiler secondary bellows ash conveying device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112577062A (en) | 2021-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1325169C (en) | Improved separation apparatus | |
| CN112577062B (en) | Ash conveying device for secondary air box | |
| CN209501888U (en) | A kind of vertical air flow grader | |
| CN202387599U (en) | Vortex combined powder separator | |
| CN205505009U (en) | A burning boiler for biomass power generation | |
| CN203711173U (en) | Cyclone dust collector | |
| CN212791460U (en) | Powder separator | |
| CN103506210B (en) | Coal pulverizer with double separator | |
| CN111271725A (en) | Anti-blocking system for multi-stage mixed flow primary air pipe | |
| CN108360094A (en) | A kind of cyclone separator of the anti-paste net and normal pressure blanking blowout prevention ash of automatically cleaning filter cylinder | |
| CN108145802A (en) | A kind of wood-turning machine based on programmable controller | |
| CN207222350U (en) | A kind of gas flow sizing machine | |
| CN106622617B (en) | Tailing separator is used in binary channels rotation | |
| US2101249A (en) | Pneumatic classifier | |
| CN209378619U (en) | A kind of mine dry-type duster pulse deashing device | |
| CN115489740A (en) | Helicopter engine air inlet sand discharging device with abrasion-proof axial flow fan blades | |
| CN108543399A (en) | Electrical Equipments of Coal Mine chamber cleaning gas | |
| CN104998744B (en) | The Raymond mill device of blower not dust accumulation | |
| CN201140118Y (en) | Centrifugal separation device | |
| CN207680823U (en) | A kind of pulverized-coal collector | |
| CN209237525U (en) | A kind of cartridge type grain deduster | |
| CN207418612U (en) | Novel pearl rock expansion furnace with adjustable flame device | |
| CN206415340U (en) | A kind of anti-airborne dust formula split air conditioner | |
| CN203155023U (en) | Dust collector applied to vacuum cleaner | |
| CN211563285U (en) | Compact coal mill doublestage axial separator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |