CN113975899A - Chain grate-rotary kiln denitration system - Google Patents
Chain grate-rotary kiln denitration system Download PDFInfo
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- CN113975899A CN113975899A CN202111353053.8A CN202111353053A CN113975899A CN 113975899 A CN113975899 A CN 113975899A CN 202111353053 A CN202111353053 A CN 202111353053A CN 113975899 A CN113975899 A CN 113975899A
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- cone
- dust
- wall
- scraper
- rotary kiln
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- 239000000428 dust Substances 0.000 claims abstract description 222
- 230000005540 biological transmission Effects 0.000 claims description 29
- 238000009434 installation Methods 0.000 claims description 6
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 35
- 230000000903 blocking effect Effects 0.000 abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 33
- 239000003546 flue gas Substances 0.000 description 33
- 239000000779 smoke Substances 0.000 description 33
- 239000007789 gas Substances 0.000 description 20
- 239000002245 particle Substances 0.000 description 19
- 230000009471 action Effects 0.000 description 10
- 230000005484 gravity Effects 0.000 description 8
- 238000007790 scraping Methods 0.000 description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000008188 pellet Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/14—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/18—Cleaning-out devices
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
The invention belongs to the technical field of rotary kiln denitration, and particularly relates to a chain grate-rotary kiln denitration system, which comprises a cyclone dust collector; the cyclone dust collector also comprises a machine body, a dust collection box and a controller; the machine body comprises a cylinder body and a cone; the cylinder body is fixedly connected with the cone, the upper end of the cylinder body is provided with an exhaust port, and the inner wall of the cylinder body is provided with an air inlet; according to the invention, through the arrangement of the scraper, the scraper can scrape off dust accumulated on the inner wall of the cone, so that the dust is prevented from being accumulated on the inner wall of the cone, on one hand, the dust is prevented from blocking the dust exhaust port, on the other hand, the dust accumulated on the inner wall of the cone is prevented from being rolled up by airflow, and therefore, the dust removal effect of the dust is improved.
Description
Technical Field
The invention belongs to the technical field of rotary kiln denitration, and particularly relates to a chain grate-rotary kiln denitration system.
Background
The production of the pellets in China mainly adopts a grate-rotary kiln process, the grate is adopted for drying and preheating green pellets, the rotary kiln is used for consolidating and roasting the pellets, finished pellets are cooled on a circular cooler, a large amount of flue gas is generated during the combustion of the grate-rotary kiln pellet production process, and the flue gas has high content of nitrogen oxides which can cause environmental pollution and influence ecology and human health if being directly discharged into the atmosphere, therefore, before discharging, the flue gas generated in the production of the grate-rotary kiln pellets needs to be subjected to denitration treatment, the flue gas after denitration treatment needs to be dedusted so as to remove the dust of nitrogen oxides contained in the flue gas, and the traditional deduster is provided with a cyclone deduster and a bag deduster, so that the flue gas is dedusted by the cyclone deduster commonly used in the industry due to the high temperature of the flue gas after denitration treatment of the chain grate-rotary kiln.
For example, a chinese patent with application number CN201810381207.6 discloses a high-efficiency multi-cyclone dust collector, in the technical scheme, a plurality of sets of parallel cyclones are used to separate the soot in the flue gas to the outer layer of the flue gas flow by centrifugal force and settle down, the purified flue gas with the soot separated is discharged by rotating and rising along the axis of the cyclones and is discharged through a smoke discharge pipe, thereby improving the dust removal efficiency of the device; however, the technical scheme does not completely solve the problem that the flow of the flue gas in the cyclone dust collector can be blocked by a plurality of groups of parallel cyclones, so that the spiral rotating speed of the flue gas in the cyclone dust collector is reduced, the centrifugal force borne by dust particles in the flue gas is reduced, the dust removal effect of the cyclone dust collector is weakened, and the limitation of the technical scheme is further caused.
In view of the above, the present invention provides a grate-rotary kiln denitration system, which solves the above technical problems.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a chain grate-rotary kiln denitration system, which can scrape off dust accumulated on the inner wall of a cone by a scraper through the arrangement of the scraper, so that the dust is prevented from accumulating on the inner wall of the cone, on one hand, the dust is prevented from blocking a dust discharge port, on the other hand, the dust accumulated on the inner wall of the cone is prevented from being rolled up by airflow, so that the dust removal effect of the dust is improved, and the rotation of the scraper not only accelerates the flow velocity of the airflow inside a cyclone dust collector, so that the centrifugal force borne by dust particles is increased, the separation of the dust is accelerated, but also plays a role in guiding the dust entering through an air inlet, accelerates the entering of the dust, improves the dust removal efficiency of the cyclone dust collector, and further improves the practicability of the invention.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a chain grate-rotary kiln denitration system, which comprises a cyclone dust collector; the cyclone dust collector also comprises a machine body, a dust collection box and a controller; the machine body comprises a cylinder body and a cone; the cylinder body is fixedly connected with the cone, the upper end of the cylinder body is provided with an exhaust port, and the inner wall of the cylinder body is provided with an air inlet; the cone is communicated with the dust collection box through a dust exhaust port; the inner wall of the cone is provided with an installation groove, and a gear is rotationally connected in the installation groove; the inner wall of the cone is connected with a scraper in a sliding way, and the lower end of the scraper is fixedly connected with a gear; the inner wall of the mounting groove is rotatably and hermetically connected with a worm, and the worm is in threaded transmission connection with a gear; the outer wall of the cone is fixedly connected with a driving motor which is fixedly connected with one end of the worm; the controller is used for controlling the cyclone dust collector to automatically operate;
in the prior art, before denitration is performed on flue gas generated in a grate-rotary kiln, dust is removed by a cyclone dust collector, and the flue gas generated in the grate-rotary kiln is high in temperature, so that the dust in the flue gas is too high in viscosity, and the dust is accumulated on the inner wall of a cone of the cyclone dust collector;
when the cyclone dust collector works, the controller controls the driving motor to drive the worm to rotate, so that the worm drives the gear to rotate, the scraper blade rotates along with the gear synchronously, at the moment, airflow in the cyclone dust collector rotates under the stirring of the scraper blade, the principle of the conventional cyclone dust collector is known, when the controller controls the flue gas to be conveyed into the machine body through the air inlet, the flue gas can rotate downwards along the inner wall of the machine body, dust particles in the flue gas fall off the cone along the inner wall of the cylinder under the combined action of centrifugal force and gravity, and enter the dust collection box along the inner wall of the cone, the vortex airflow collected downwards along the inner wall of the cone is contacted with the bottom of the cone, the airflow continues to spirally flow upwards along the axis, the upwards spiral airflow flows out from the air outlet, and along with the rotation of the scraper blade, the dust particles accumulated on the inner wall of the cone can be scraped by the scraper blade, so that the dust scraped by the scraper blade falls off to the dust collection box along the inner wall of the cone under the action of the gravity, thereby avoiding dust from accumulating on the inner wall of the cone;
according to the invention, through the arrangement of the scraper, the scraper can scrape off dust accumulated on the inner wall of the cone, so that the dust is prevented from being accumulated on the inner wall of the cone, on one hand, the dust is prevented from blocking the dust exhaust port, on the other hand, the dust accumulated on the inner wall of the cone is prevented from being rolled up by airflow, and therefore, the dust removal effect of the dust is improved.
Preferably, the shape of the scraper is spiral, the scraper is attached to the inner wall of the cone, and the scraper is inclined to the inner wall of the cone; when the cyclone dust collector works, when the rotating speed of the scraper blade is equal to that of smoke dust, the flow velocity of gas in the cyclone dust collector approaches to be stable, when the smoke dust rotates downwards along the inner wall of the cone, the smoke dust flows downwards along the spiral surface of the scraper blade when the smoke dust rotates spirally due to the spiral shape of the scraper blade, so that the spiral flowing direction of the smoke gas at the cone is ensured, the spiral flowing direction of the smoke gas is also prevented from being blocked by the scraper blade, the smoke gas at the scraper blade is prevented from generating local small vortex, the centrifugal effect of the smoke gas is ensured, the separation of dust particles in the smoke gas is improved, the scraper blade is obliquely arranged, the blocking effect of the scraper blade on the smoke gas is weakened, the spiral flowing effect of the smoke gas is improved, the scraper blade also has the blocking effect on the scraped dust, the dust is prevented from being raised, and the dust enters the dust collection box under the self gravity and the promotion of the downward flowing smoke gas, further effectively improving the practical application effect of the invention.
Preferably, one surface of the scraper plate, which is in sliding contact with the inner wall of the cone, is rotatably connected with a roller, the roller is in rolling contact with the inner wall of the cone, and one end of the roller is fixedly connected with a first transmission bevel gear; a through groove is formed in the scraper, a roller shaft is rotatably connected in the through groove, teeth are fixedly connected to the surface of the roller shaft, a second transmission bevel gear is fixedly connected to one end, close to the roller, of the roller shaft, and the second transmission bevel gear is meshed with the first transmission bevel gear; the surfaces of two adjacent roll shafts are in transmission connection with spring steel laths, and one sides of the laths, which are close to the roll shafts, are provided with meshing grooves; when the scraper blade rotates, the roller at the lower end of the scraper blade rotates synchronously with the scraper blade, so that the roller rolls along the inner wall of the cone, the roller transmits kinetic energy to the roller shaft through the first transmission bevel gear and the second transmission bevel gear, and the roller shaft drives the lath to move due to the meshing transmission between the roller shaft and the lath through the teeth and the meshing groove, so that the lath can push dust accumulated on the upper end surface of the scraper blade to fall downwards in the moving process, the dust moves downwards along the inner wall of the cone under the pushing of the lath, and the dust falls into the dust collection box; according to the invention, through the matching between the lath and the roller, the roller drives the lath to move through the principle of meshing transmission of the teeth and the meshing grooves at the lower end of the lath, so that the lath generates a driving force on dust particles accumulated on the upper end surface of the scraper, not only the dust particles are accelerated to fall into the dust collection box, but also excessive dust is prevented from being accumulated on the upper end surface of the scraper, thus the dust cleaning effect of the scraper is improved, and the actual application effect of the scraper is improved.
Preferably, a brush plate is arranged on the outer side of the batten; when the dust collection box works, the brush plate can synchronously move along with the laths along with the rotation of the laths, so that when the brush plate moves along the inner wall of the cone, the brush plate can push the dust attached to the inner wall of the cone to move downwards along the inner wall of the cone, and the dust on the inner wall of the cone enters the dust collection box under the pushing of the brush plate; according to the dust collection box, the brush plate can push more dust between the scraper and the inner wall of the cone to enter the dust collection box through the arrangement of the brush plate, so that the dust collection effect of the scraper is improved, and the practical application effect of the dust collection box is effectively improved.
Preferably, the cross section of the brush plate is in a shape of a right-angled triangle, the right-angled bottom end of the brush plate is arranged on the side wall of the batten, and the right-angled side edge of the brush plate is in sliding contact with the upper end face of the scraper; when the dust collection box works, the scraper is obliquely arranged, so that an included angle is formed between the upper end surface of the scraper and the inner wall of the cone and is an acute angle, when the triangular brush plate moves along the upper end surface of the scraper, the right-angle tip end of the triangular brush plate can extend into the gap between the upper end surface of the scraper and the inner wall of the cone, so that thrust is generated on dust in the gap, when the brush plate is driven by the lath to move to the roller shaft close to the dust exhaust port, the brush plate extends out from the position between the scraper and the inner wall of the cone, so that the brush plate is positioned at the upper end of the dust exhaust port, the dust drops into the dust collection box through the dust exhaust port, the brush plate continuously rotates along with the lath, the right-angle side edge of the brush plate slides along the upper end surface of the scraper, the tip end of the brush plate extends into the gap between the upper end surface of the scraper and the inner wall of the cone, so that the brush plate pushes dust particles remained between the upper end surface of the scraper and the inner wall of the cone through the right-angle side edge, and continuously moves along with the brush plate, the brush plate pushes dust remained in gaps between the upper end surface of the scraper and the included angle, so that the dust is separated from the gaps between the upper end surface of the scraper and the included angle, thereby reducing the dust residue on the upper end surface of the scraper, improving the cleaning effect of the scraper and further improving the practical application effect of the invention.
Preferably, the brush plate is rotatably connected with the lath through a torsion spring; when the scraper blade device works, when the lath drives the brush plate close to the inner wall of the cone to move, the brush plate is driven by the lath to overcome the torsion of the torsion spring and rotate towards the direction far away from the inner wall of the cone due to the contact of the brush plate and the inner wall of the cone, so that the brush plate is driven by the lath to tilt into the included angle between the upper end surface of the scraper blade and the inner wall of the cone, and the brush plate pushes the residual dust between the upper end surface of the scraper blade and the inner wall of the cone to rapidly drop under the action of the torsion spring; according to the invention, through the arrangement of the torsion spring, the dust between the scraper and the inner wall of the cone is scraped by the brush plate which obliquely enters the gap between the upper end surface of the scraper and the inner wall of the cone under the action of the restoring force of the torsion spring, so that the scraping force of the brush plate on the dust in the gap between the scraper and the included angle is improved, the residual quantity of the dust is reduced, and the practical application effect of the dust scraper is further improved.
The invention has the following beneficial effects:
1. according to the invention, through the arrangement of the scraper, the scraper can scrape off dust accumulated on the inner wall of the cone, so that the dust is prevented from being accumulated on the inner wall of the cone, on one hand, the dust is prevented from blocking the dust exhaust port, on the other hand, the dust accumulated on the inner wall of the cone is prevented from being rolled up by airflow, and therefore, the dust removal effect of the dust is improved.
2. According to the invention, through the matching between the lath and the roller, the roller drives the lath to move through the principle of meshing transmission of the teeth and the meshing grooves at the lower end of the lath, so that the lath generates a driving force on dust particles accumulated on the upper end surface of the scraper, not only the dust particles are accelerated to fall into the dust collection box, but also excessive dust is prevented from being accumulated on the upper end surface of the scraper, thus the dust cleaning effect of the scraper is improved, and the actual application effect of the scraper is improved.
3. According to the invention, through the arrangement of the torsion spring, the dust between the scraper and the inner wall of the cone is scraped by the brush plate which obliquely enters the gap between the upper end surface of the scraper and the inner wall of the cone under the action of the restoring force of the torsion spring, so that the scraping force of the brush plate on the dust in the gap between the scraper and the included angle is improved, the residual quantity of the dust is reduced, and the practical application effect of the dust scraper is further improved.
Drawings
The invention is further described with reference to the following figures and embodiments.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic view of the structure of the cone of the present invention;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 4 is an enlarged view at B in FIG. 2;
in the figure: 1. a body; 11. a barrel; 111. an exhaust port; 112. an air inlet; 12. a cone; 121. a dust exhaust port; 122. mounting grooves; 2. a dust collection box; 3. a gear; 31. a worm; 32. a drive motor; 4. a squeegee; 41. a roller; 42. a first transmission bevel gear; 43. a roll shaft; 431. teeth; 44. a slat; 441. an engagement groove; 45. a second transmission bevel gear; 46. brushing the board; 47. a torsion spring; 48. a through groove.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, a grate-rotary kiln denitration system according to the present invention includes a cyclone; the cyclone dust collector also comprises a machine body 1, a dust collection box 2 and a controller; the machine body 1 comprises a cylinder body 11 and a cone body 12; the cylinder body 11 is fixedly connected with the cone 12, the upper end of the cylinder body 11 is provided with an exhaust port 111, and the inner wall of the cylinder body 11 is provided with an air inlet 112; the cone 12 is communicated with the dust collection box 2 through a dust exhaust port 121; an installation groove 122 is formed in the inner wall of the cone 12, and a gear 3 is rotatably connected in the installation groove 122; the inner wall of the cone 12 is connected with a scraper 4 in a sliding way, and the lower end of the scraper 4 is fixedly connected with the gear 3; the inner wall of the mounting groove 122 is rotatably and hermetically connected with a worm 31, and the worm 31 is in threaded transmission connection with the gear 3; the outer wall of the cone 12 is fixedly connected with a driving motor 32, and the driving motor 32 is fixedly connected with one end of the worm 31; the controller is used for controlling the cyclone dust collector to automatically operate;
in the prior art, before denitration is performed on flue gas generated in a grate-rotary kiln, dust is removed by a cyclone dust collector, and due to the fact that the temperature of the flue gas generated in the grate-rotary kiln is high, the dust in the flue gas is too high in viscosity, so that dust is accumulated on the inner wall of a cone 12 of the cyclone dust collector, on one hand, if excessive dust is accumulated, the dust outlet 121 is easily blocked if the excessive dust cannot be discharged in time, on the other hand, the dust accumulated on the inner wall of the cone 12 is easily rolled up by airflow and is discharged out of the cyclone dust collector along with the airflow, and then the dust removal effect is reduced;
when the cyclone dust collector works, the controller controls the driving motor 32 to drive the worm 31 to rotate, so that the worm 31 drives the gear 3 to rotate, the scraper 4 rotates along with the gear 3 synchronously, at the moment, airflow in the cyclone dust collector rotates under the stirring of the scraper 4, and the principle of the conventional cyclone dust collector is known, when the controller controls smoke to be conveyed into the machine body 1 through the air inlet 112, the smoke can rotate downwards along the inner wall of the machine body 1, so that dust particles in the smoke can fall off the cone 12 along the inner wall of the cylinder body 11 under the combined action of centrifugal force and gravity, and enter the dust collection box 2 along the inner wall of the cone 12, the downward vortex airflow along the inner wall of the cone 12 is contacted with the bottom of the cone 12, the airflow continuously flows spirally upwards along the axis, so that the upward spiral airflow flows out from the air outlet 111, and along with the rotation of the scraper 4, the dust particles accumulated on the inner wall of the cone 12 can be scraped by the scraper 4, the dust scraped off by the scraper 4 falls to the dust collection box 2 along the inner wall of the cone 12 under the action of the gravity of the dust, so that the dust is prevented from being accumulated on the inner wall of the cone 12;
according to the invention, through the arrangement of the scraper 4, the scraper 4 can scrape off dust accumulated on the inner wall of the cone 12 and prevent the dust from accumulating on the inner wall of the cone 12, so that the dust discharge port 121 is prevented from being blocked by the dust, and the dust accumulated on the inner wall of the cone 12 is prevented from being rolled up by airflow, thereby improving the dust removal effect of the dust, and the rotation of the scraper 4 not only accelerates the flow velocity of the airflow inside the cyclone dust collector, so that the centrifugal force borne by dust particles is increased, and the separation of the dust is accelerated, but also plays a role in guiding the smoke entering through the air inlet 112, accelerates the entry of the smoke, improves the dust removal efficiency of the cyclone dust collector, and further improves the practicability of the invention.
The shape of the scraper 4 is spiral as an embodiment of the invention, the scraper 4 is adhered to the inner wall of the cone 12, and the scraper 4 is inclined to the inner wall of the cone 12; when the cyclone dust collector works, when the rotating speed of the scraper 4 is equal to that of smoke dust, the flow velocity of gas in the cyclone dust collector approaches to be stable, when the smoke dust rotates downwards along the inner wall of the cone 12, as the scraper 4 is set to be spiral, when the smoke dust rotates spirally, the smoke gas flows downwards along the spiral surface of the scraper 4, the spiral flowing direction of the smoke gas at the cone 12 is ensured, thereby the scraper 4 is also prevented from blocking the spiral flowing direction of the smoke gas, the smoke gas at the scraper 4 is prevented from generating local small vortex, the centrifugal effect of the smoke gas is ensured, the separation of dust particles in the smoke gas is improved, and the scraper 4 is obliquely arranged, not only is the blocking effect of the scraper 4 on the smoke gas weakened, the spiral flowing effect of the smoke gas improved, but also the scraper 4 plays a blocking role on the scraped dust, the dust is prevented from being raised, and the dust enters the dust collection box 2 under the self gravity and the promotion of the downward flowing smoke gas, further effectively improving the practical application effect of the invention.
The surface of the scraper 4 which is in sliding contact with the inner wall of the cone 12 is rotatably connected with a roller 41, the roller 41 is in rolling contact with the inner wall of the cone 12, and one end of the roller 41 is fixedly connected with a first transmission bevel gear 42; a through groove 48 is formed in the scraper 4, a roller shaft 43 is rotatably connected in the through groove 48, teeth 431 are fixedly connected to the surface of the roller shaft 43, a second transmission bevel gear 45 is fixedly connected to one end, close to the roller 41, of the roller shaft 43, and the second transmission bevel gear 45 is meshed with the first transmission bevel gear 42; the surfaces of two adjacent roller shafts 43 are in transmission connection with spring steel laths 44, and one side of each lath 44, which is close to the roller shaft 43, is provided with an engagement groove 441; when the dust collection box 2 is in work, the teeth 431 are meshed with the meshing grooves 441 at the lower ends of the bars 44, when the scraper 4 rotates, the rollers 41 at the lower end of the scraper 4 synchronously rotate along with the scraper 4, so that the rollers 41 roll along the inner wall of the cone 12, the rollers 41 transmit kinetic energy to the roller shafts 43 through the first transmission bevel teeth 42 and the second transmission bevel teeth 45, and the roller shafts 43 and the bars 44 are in meshing transmission with the meshing grooves 441 through the teeth 431, so that the roller shafts 43 can drive the bars 44 to move, the bars 44 can push dust accumulated on the upper end surface of the scraper 4 to fall downwards in the moving process of the bars 44, the dust is pushed by the bars 44 to move downwards along the inner wall of the cone 12, and the dust falls into the dust collection box 2; according to the invention, through the matching between the strip 44 and the roller 41, the roller 41 drives the strip 44 to move through the principle that the teeth 431 are meshed with the meshing groove 441 at the lower end of the strip 44 for transmission, so that the strip 44 generates a driving force on dust particles accumulated on the upper end surface of the scraper 4, not only the dust particles are accelerated to fall into the dust collection box 2, but also excessive dust is prevented from being accumulated on the upper end surface of the scraper 4, thus the dust cleaning effect of the scraper 4 is improved, and the practical application effect of the invention is improved.
A brush plate 46 is installed outside the bar 44 as an embodiment of the present invention; in operation, as the laths 44 rotate, the brush plate 46 can move synchronously with the laths 44, so that when the brush plate 46 moves along the inner wall of the cone 12, the brush plate 46 can push the dust attached to the inner wall of the cone 12 to move downwards along the inner wall of the cone 12, and the dust on the inner wall of the cone 12 enters the dust collection box 2 under the pushing of the brush plate 46; according to the invention, through the arrangement of the brush plate 46, the brush plate 46 can push more dust between the scraper 4 and the inner wall of the cone 12 to enter the dust collection box 2, so that the dust scraping effect of the scraper 4 is improved, and the actual application effect of the dust collection box is effectively improved.
The cross-sectional shape of the brush plate 46 as an embodiment of the present invention is set to a right triangle, the right-angled bottom end of the brush plate 46 is mounted on the side wall of the bar 44, and the right-angled side edge of the brush plate 46 is in sliding contact with the upper end face of the squeegee 4; when the dust collection box works, the scraper 4 is obliquely arranged, so that an included angle is formed between the upper end face of the scraper 4 and the inner wall of the cone 12 and is an acute angle, when the triangular brush plate 46 moves along the upper end face of the scraper 4, the right-angle tip of the triangular brush plate 46 can extend into the gap between the upper end face of the scraper 4 and the inner wall of the cone 12, so as to generate thrust on dust in the gap, when the strip 44 drives the brush plate 46 to move to the roller shaft 43 close to the dust discharge port 121, the brush plate 46 extends out from the position between the scraper 4 and the inner wall of the cone 12, so that the brush plate 46 is positioned at the upper end of the dust discharge port 121, so that the dust falls into the dust collection box 2 through the dust discharge port 121, and along with the continuous rotation of the strip 44, the brush plate 46 is driven by the strip 44, the right-angle side edge of the brush plate 46 slides along the upper end face of the scraper 4, the tip of the brush plate 46 extends into the gap between the upper end face of the scraper 4 and the inner wall of the cone 12, so that the brush plate 46 pushes dust particles remained between the upper end face of the scraper 4 and the inner wall of the cone 12 through the right-angle side edge, at this time, as the brush plate 46 continues to move, the brush plate 46 pushes the dust remained in the gap between the upper end surface of the scraper 4 and the included angle, so that the dust is separated from the gap between the upper end surface of the scraper 4 and the included angle, thereby reducing the dust remained on the upper end surface of the scraper 4, improving the cleaning effect of the scraper 4, and further improving the practical application effect of the invention.
The brush plate 46 and the strip 44 are rotatably connected by a torsion spring 47 as an embodiment of the present invention; when the scraper blade 4 works, when the lath 44 drives the brush plate 46 close to the inner wall of the cone 12 to move, the brush plate 46 is driven by the lath 44 to overcome the torsion of the torsion spring 47 and rotate towards the direction far away from the inner wall of the cone 12 due to the contact between the brush plate 46 and the inner wall of the cone 12, so that the brush plate 46 is driven by the lath 44 to tilt into the included angle between the upper end surface of the scraper blade 4 and the inner wall of the cone 12, and the brush plate 46 pushes residual dust between the upper end surface of the scraper blade 4 and the inner wall of the cone 12 to rapidly drop under the action of the torsion spring 47; according to the invention, through the arrangement of the torsion spring 47, the brush plate 46 obliquely entering the gap between the upper end surface of the scraping plate 4 and the inner wall of the cone 12 scrapes dust between the scraping plate 4 and the inner wall of the cone 12 under the restoring force of the torsion spring 47, so that the scraping force of the brush plate 46 on the dust in the gap between the scraping plate 4 and the included angle is improved, the residual quantity of the dust is reduced, and the actual application effect of the invention is further improved.
The specific working process is as follows:
the controller controls the driving motor 32 to drive the worm 31 to rotate, so that the worm 31 drives the gear 3 to rotate, the scraper 4 rotates synchronously with the gear 3, at the moment, the airflow in the cyclone dust collector rotates under the stirring of the scraper 4, and the principle of the existing cyclone dust collector can be known, when the controller controls the flue gas to be conveyed into the machine body 1 through the air inlet 112, the flue gas can rotate downwards along the inner wall of the machine body 1, so that the dust particles in the flue gas fall off the cone 12 along the inner wall of the cylinder 11 under the combined action of centrifugal force and gravity, and enter the dust collection box 2 along the inner wall of the cone 12, the vortex airflow collected downwards along the inner wall of the cone 12 is contacted with the bottom of the cone 12, the airflow continues to flow spirally upwards along the axis, so that the upwards spiral airflow flows out from the air outlet 111, and the dust particles accumulated on the inner wall of the cone 12 can be scraped off by the scraper 4 along with the rotation of the scraper 4, the dust scraped off by the scraper 4 falls to the dust collection box 2 along the inner wall of the cone 12 under the action of the gravity of the dust, so that the dust is prevented from being accumulated on the inner wall of the cone 12; when the rotational speed of scraper blade 4 equals the rotational speed of smoke and dust, the inside gas velocity of flow of cyclone approaches to stably, when the smoke and dust rotates along the 12 inner walls of cone downwards, because scraper blade 4 sets up to the heliciform, when making the smoke and dust carry out the spiral rotation, the flue gas can flow downwards along 4 helical surfaces of scraper blade, the direction of the spiral flow of flue gas in cone 12 department has been guaranteed, thereby also avoid scraper blade 4 to block the flow direction of flue gas spiral, prevent that the flue gas of scraper blade 4 department from producing local little vortex, the centrifugal effect of flue gas has been guaranteed, the separation of dust granule in the flue gas has been improved, and scraper blade 4 inclines to set up, not only make scraper blade 4 weaken to the effect that blocks of flue gas, the effect that the flue gas spiral flows has been improved, still make scraper blade 4 play the effect of blockking to the dust that scrapes.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a chain grate-rotary kiln deNOx systems which characterized in that: comprises a cyclone dust collector; the cyclone dust collector also comprises a machine body (1), a dust collection box (2) and a controller; the machine body (1) comprises a cylinder body (11) and a cone body (12); the cylinder body (11) is fixedly connected with the cone body (12), an exhaust port (111) is formed in the upper end of the cylinder body (11), and an air inlet (112) is formed in the inner wall of the cylinder body (11); the cone (12) is communicated with the dust collection box (2) through a dust exhaust port (121); an installation groove (122) is formed in the inner wall of the cone (12), and a gear (3) is rotatably connected to the installation groove (122); the inner wall of the cone (12) is connected with a scraper (4) in a sliding manner, and the lower end of the scraper (4) is fixedly connected with the gear (3); the inner wall of the mounting groove (122) is rotatably and hermetically connected with a worm (31), and the worm (31) is in threaded transmission connection with the gear (3); the outer wall of the cone (12) is fixedly connected with a driving motor (32), and the driving motor (32) is fixedly connected with one end of the worm (31); the controller is used for controlling the cyclone dust collector to automatically operate.
2. The grate-rotary kiln denitration system according to claim 1, wherein: the scraper (4) is in a spiral shape, the scraper (4) is attached to the inner wall of the cone (12), and the scraper (4) is inclined to the inner wall of the cone (12).
3. The grate-rotary kiln denitration system according to claim 2, wherein: one surface of the scraper (4) in sliding contact with the inner wall of the cone (12) is rotatably connected with a roller (41), the roller (41) is in rolling contact with the inner wall of the cone (12), and one end of the roller (41) is fixedly connected with a first transmission bevel gear (42); a through groove (48) is formed in the scraper (4), a roller shaft (43) is rotatably connected in the through groove (48), teeth (431) are fixedly connected to the surface of the roller shaft (43), one end, close to the roller (41), of the roller shaft (43) is fixedly connected with a second transmission bevel gear (45), and the second transmission bevel gear (45) is meshed with the first transmission bevel gear (42); the surfaces of two adjacent roller shafts (43) are in transmission connection with spring steel laths (44), and one side, close to the roller shafts (43), of each lath (44) is provided with an engagement groove (441).
4. The grate-rotary kiln denitration system according to claim 3, wherein: the outer side of the batten (44) is provided with a brush board (46).
5. The grate-rotary kiln denitration system according to claim 4, wherein: the cross-sectional shape of brush board (46) sets up to right triangle, and the lateral wall at lath (44) is installed to brush board (46) right angle bottom, and brush board (46) right angle side and scraper blade (4) up end sliding contact.
6. The grate-rotary kiln denitration system according to claim 5, wherein: the brush plate (46) is rotatably connected with the lath (44) through a torsion spring (47).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111353053.8A CN113975899A (en) | 2021-11-16 | 2021-11-16 | Chain grate-rotary kiln denitration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111353053.8A CN113975899A (en) | 2021-11-16 | 2021-11-16 | Chain grate-rotary kiln denitration system |
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| CN113975899A true CN113975899A (en) | 2022-01-28 |
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| CN202111353053.8A Pending CN113975899A (en) | 2021-11-16 | 2021-11-16 | Chain grate-rotary kiln denitration system |
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