CN110425868B - Secondary air supply device of rotary kiln - Google Patents
Secondary air supply device of rotary kiln Download PDFInfo
- Publication number
- CN110425868B CN110425868B CN201910815100.2A CN201910815100A CN110425868B CN 110425868 B CN110425868 B CN 110425868B CN 201910815100 A CN201910815100 A CN 201910815100A CN 110425868 B CN110425868 B CN 110425868B
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- Prior art keywords
- packing
- annular sealing
- rotary kiln
- annular
- plate
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- 238000007789 sealing Methods 0.000 claims abstract description 150
- 238000012856 packing Methods 0.000 claims abstract description 130
- 239000000945 filler Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 210000004907 gland Anatomy 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000001354 calcination Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010763 heavy fuel oil Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/36—Arrangements of air or gas supply devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention relates to a secondary air supply device of a rotary kiln, which comprises an annular sealing cover, an annular sealing plate, an air pipe, a first packing sealing structure and a second packing sealing structure; the annular sealing cover is fixedly arranged on the periphery of the rotary kiln cylinder body, and one side of the annular sealing cover is sealed by an annular sealing plate; at least 2 groups of air pipes are arranged along the circumferential direction of the rotary kiln cylinder body, two ends of each air pipe are respectively communicated with the annular sealing cover and the rotary kiln cylinder body, when the rotary kiln cylinder body rotates, the air pipes and the annular sealing plate synchronously rotate, the annular sealing cover and the annular sealing plate are sealed through a first packing sealing structure, and the annular sealing plate and the main air pipe are sealed through a second packing sealing structure. In the invention, the fan is arranged separately from the rotary kiln, the fan supplies air into the fixedly arranged annular sealing cover, and the fan is rotatably connected with the annular sealing cover through the annular sealing plate, so that the aim of supplying secondary air into the rotary kiln through the air pipe is fulfilled; the invention improves the working environment of the fan and can reduce the construction and operation cost of equipment.
Description
Technical Field
The invention relates to an air supply device, in particular to a secondary air supply device of a rotary kiln.
Background
The secondary air and tertiary air for combustion are the common thermal technology of carbon rotary kiln and partial cement kiln. The primary air at the kiln tail of the carbon rotary kiln only supplies air for fuel combustion, so that the interior of the kiln is in a reducing or weak oxidizing atmosphere, and carbon combustion in raw materials is avoided. The secondary air supplied to the middle part of the kiln is used for burning organic volatile matters released by the raw materials in the calcination process so as to raise the temperature in the kiln and avoid the pollution of the organic volatile matters to the atmosphere; in partial cement kiln, sectional combustion technology is used, on one hand, the primary air quantity at the kiln tail is reduced to achieve the aim of inhibiting the generation of nitrogen oxides, and meanwhile, a certain amount of air is supplemented at the middle part of the kiln to consume residual fuel.
The conventional secondary air device is characterized in that a fan is arranged on a rotary kiln cylinder and rotates along with the cylinder, the fan is powered by a slip ring power supply device, and in a three-phase four-wire system circuit, 4 slip rings and a current collector are needed for each independently controlled fan to supply power. The above solution has two problems: on one hand, the fans are arranged on the kiln body in the open air, so that the environment temperatures of the fans and the motor are high, the fans are not beneficial to long-term stable use, and the fans are difficult to overhaul and maintain; on the other hand, the high-quality and reliable slip ring power supply device is high in price and needs to be replaced regularly, so that the construction and operation costs of engineering are greatly increased.
Disclosure of Invention
The invention provides a secondary air supply device of a rotary kiln, wherein a fan is arranged separately from the rotary kiln, the fan supplies air into an annular sealing cover which is fixedly arranged, and the fan is rotatably connected with the annular sealing cover through an annular sealing plate, so that the aim of supplying secondary air into the rotary kiln through an air pipe is fulfilled; the invention improves the working environment of the fan, improves the working reliability and service life of the fan, and can reduce the equipment construction and operation cost.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
a secondary air supply device of a rotary kiln comprises an annular sealing cover, an annular sealing plate, an air pipe and a packing sealing structure; the annular sealing cover is fixedly arranged on the periphery of the rotary kiln cylinder body, an air inlet pipe is arranged on the annular sealing cover along the tangential direction, the cross section of the annular sealing cover is U-shaped, and one open side of the annular sealing cover is sealed by an annular sealing plate; at least 2 groups of air pipes are arranged along the circumferential direction of the rotary kiln cylinder body, each group of air pipes consists of a main air pipe and a branch air pipe, one end of the main air pipe penetrates through the annular sealing plate and then is inserted into the annular sealing cover, the other end of the main air pipe extends along the axial direction of the rotary kiln cylinder body, the branch air pipe is perpendicular to the main air pipe, one end of the branch air pipe is communicated with the main air pipe, and the other end of the branch air pipe penetrates through the outer wall of the rotary kiln cylinder body in the radial direction and then extends into the rotary kiln cylinder body; when the rotary kiln cylinder rotates, the air pipe and the annular sealing plate synchronously rotate, the annular sealing plate rotates relative to the annular sealing cover, the annular sealing cover and the annular sealing plate are sealed through a first packing sealing structure, and the annular sealing plate and the main air pipe are sealed through a second packing sealing structure.
The annular sealing cover is fixed on the rotary kiln foundation through a support.
The outer end of the air inlet pipe is provided with a flange which is connected with an air supply pipeline, and the other end of the air supply pipeline is connected with a fan.
The main air pipe consists of a straight pipe section and a connecting pipe section, the middle part of the straight pipe section is in sealing connection with the annular sealing plate, and one end of the straight pipe section, which is positioned outside the annular sealing cover, is fixedly connected with the connecting pipe section through a flange; the connecting pipe section extends along the axial direction of the rotary kiln cylinder body, a plurality of short connecting pipes are arranged on the connecting pipe section at intervals in parallel, and the short connecting pipes are fixedly connected with the branch air pipes through flanges.
The first packing sealing structure consists of an inner packing positioning plate, an outer packing positioning plate, a first packing, a second packing, a compression bolt and a tightening nut, wherein the inner packing positioning plate is arranged in an annular sealing cover at the inner side of the annular sealing plate, the inner packing positioning plate is fixedly connected with the annular sealing cover, an annular packing groove I is arranged at the periphery of the inner packing positioning plate, and the first packing is arranged in the annular packing groove I; an outer packing positioning plate is arranged in an annular sealing cover at the outer side of the annular sealing plate, an annular packing groove II is arranged at the periphery of the outer packing positioning plate, and a packing II is arranged in the annular packing groove II; the fixed annular plate is arranged on the outer side of the annular sealing plate, a plurality of bolt holes are formed in the fixed annular plate along the circumferential direction, the tightening nuts are fixed on the outer sides of the bolt holes, the compression bolts penetrate through the corresponding tightening nuts and the bolt holes and apply pressure on the outer packing positioning plate, the annular sealing plate and the inner packing positioning plate, under the action of the pressure, the packing II is tightly attached to the outer side face of the annular sealing plate, the packing I is tightly attached to the inner side face of the annular sealing plate and the annular sealing cover, and circumferential sealing of the annular sealing plate and the annular sealing cover is achieved.
The second packing sealing structure consists of a packing cylinder, packing and a packing gland, wherein the packing cylinder is sleeved outside a straight pipe section of the main air pipe, packing is filled in an annular space between the packing cylinder and the main air pipe, a baffle is arranged at one end of the packing cylinder to block the packing, the other end of the packing cylinder is fixedly connected with the annular sealing plate, a through hole is formed in the annular sealing plate, and the packing gland is tightly pressed on the packing after penetrating through the through hole, so that sealing between the main air pipe and the annular sealing plate is realized.
And the first filler and the second filler are graphite packing.
The filler is graphite packing.
Compared with the prior art, the invention has the beneficial effects that:
1) The slip ring power supply device is not used, so that the construction and operation costs are reduced;
2) The fan can be arranged indoors and is far away from the rotary kiln, and is connected with the secondary air supply device only through a pipeline, so that the working environment of the fan is greatly improved, and the working reliability and the service life of the fan are improved;
3) The fans are independently installed, so that the overhaul and maintenance are convenient.
Drawings
Fig. 1 is a front view of a secondary air supply device of a rotary kiln according to the present invention.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 2.
In the figure: 1. annular seal housing 2, rotary kiln barrel 3, air inlet pipe 4, support 5, annular seal plate 6, air pipe 61, straight pipe section 62, connecting pipe section 63, branch air pipe 7, inner packing positioning plate 8, packing one 9, outer packing positioning plate 10, packing two 11, compression bolt 12, fastening nut 13, packing barrel 14, packing 15, packing gland
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
as shown in fig. 1-3, the secondary air supply device of the rotary kiln comprises an annular sealing cover 1, an annular sealing plate 5, an air pipe 6 and a filler sealing structure; the annular sealing cover 1 is fixedly arranged on the periphery of the rotary kiln cylinder 2, an air inlet pipe 3 is arranged on the annular sealing cover 1 along the tangential direction, the cross section of the annular sealing cover 1 is U-shaped, and the open side of the annular sealing cover is sealed by an annular sealing plate 5; at least 2 groups of air pipes 6 are arranged along the circumferential direction of the rotary kiln cylinder 2, each group of air pipes 6 consists of a main air pipe and a branch air pipe 63, one end of the main air pipe penetrates through the annular sealing plate 5 and then is inserted into the annular sealing cover 1, the other end of the main air pipe extends along the axial direction of the rotary kiln cylinder 2, the branch air pipe 63 is perpendicular to the main air pipe, one end of the branch air pipe 63 is communicated with the main air pipe, and the other end of the branch air pipe radially penetrates through the outer wall of the rotary kiln cylinder 2 and then extends into the rotary kiln cylinder 2; when the rotary kiln cylinder 2 rotates, the air pipe 6 and the annular sealing plate 5 synchronously rotate, the annular sealing plate 5 rotates relative to the annular sealing cover 1, the annular sealing cover 1 and the annular sealing plate 5 are sealed through a first packing sealing structure, and the annular sealing plate 5 and the main air pipe are sealed through a second packing sealing structure.
The annular sealing cover 1 is fixed on the rotary kiln foundation through a support 4.
The outer end of the air inlet pipe 3 is connected with an air supply pipeline, and the other end of the air supply pipeline is connected with a fan.
The main air pipe consists of a straight pipe section 61 and a connecting pipe section 62, the middle part of the straight pipe section 61 is in sealing connection with the annular sealing plate 5, and one end of the straight pipe section 61 positioned outside the annular sealing cover 1 is fixedly connected with the connecting pipe section 62 through a flange; the connecting pipe section 62 extends axially along the rotary kiln cylinder 2, and is provided with a plurality of short connecting pipes at intervals in parallel, and the short connecting pipes are fixedly connected with the branch air pipes 63 through flanges.
The first packing sealing structure consists of an inner packing positioning plate 7, an outer packing positioning plate 9, a first packing 8, a second packing 10, a compression bolt 11 and a tightening nut 12, wherein the inner packing positioning plate 7 is arranged in the annular sealing cover 1 at the inner side of the annular sealing plate 5, the inner packing positioning plate 7 is fixedly connected with the annular sealing cover 1, an annular packing groove I is arranged at the periphery of the inner packing positioning plate 7, and the first packing 8 is arranged in the annular packing groove I; an outer packing positioning plate 9 is arranged in the annular sealing cover 1 at the outer side of the annular sealing plate 5, an annular packing groove II is arranged at the periphery of the outer packing positioning plate 9, and a packing II 10 is arranged in the annular packing groove II; the outside of annular closing plate 5 is established fixed ring board, and a plurality of bolt holes are offered along circumference to fixed ring board, and bolt hole outside is fixed tightly to fix nut 12, and compression bolt 11 passes and outwards packs locating plate 9, annular closing plate 5 and internal packing locating plate 7 behind corresponding tightly fixing nut 12 and the bolt hole, and under its pressure effect, packing two 10 paste tightly with annular closing plate 5's lateral surface, paste tightly between packing one 8 and annular closing plate 5's medial surface and annular sealing cover 1, realize annular closing plate 5 and annular sealing cover 1's circumference seal.
The second packing sealing structure consists of a packing cylinder 13, a packing 14 and a packing gland 15, the packing cylinder 13 is sleeved outside a straight pipe section 61 of the main air pipe, the packing 14 is filled in an annular space between the packing cylinder 13 and the main air pipe, a baffle is arranged at one end of the packing cylinder 13 to block the packing 14, the other end of the packing cylinder is fixedly connected with the annular sealing plate 5, a through hole is arranged on the annular sealing plate 5, and the packing gland 15 is tightly pressed on the packing 14 after passing through the through hole, so that the sealing between the main air pipe and the annular sealing plate is realized.
And the first filling material 8 and the second filling material 10 are graphite packing.
The filler 14 is a graphite packing.
In the secondary air supply device of the rotary kiln, an annular sealing cover 1 is sleeved on the outer side of a rotary kiln cylinder 2 and is fixed on a rotary kiln foundation through a support 4. The annular sealing plate 5 is arranged on one side of the annular sealing cover 1, and the annular sealing plate 5 is fixedly connected with the rotary kiln cylinder 2 through an air pipe 6 and rotates along with the rotary kiln cylinder 2.
The inner side and the outer side of the annular sealing plate 5 are respectively matched with a first filler 8 in a first annular filler groove on the inner filler positioning plate 7 and a second filler 10 in a second annular filler groove on the outer filler positioning plate 9, and are tightly pressed by a plurality of compression bolts 11 arranged along the circumferential direction to realize sealing; the annular sealing plate 5 is provided with a through hole for the air supply pipe 6 to pass through, a packing cylinder 13 and a packing 14 are arranged between the annular sealing plate 5 and the air pipe 6, the packing 14 is tightly pressed by a packing gland 15 to realize sealing, and the air pipe 6 can axially move along the packing cylinder 13 to compensate the axial expansion and contraction amount of the rotary kiln cylinder 2.
And the first filler 8, the second filler 10 and the filler 14 are made of graphite packing and other materials with certain self-lubricating capability.
When the secondary air supply device of the rotary kiln is used, secondary air is introduced into the cavity of the annular sealing cover 1 through the air inlet pipe 3 and the air supply pipeline which are connected with an external fan, then enters the rotary kiln cylinder 2 through the air pipe 6 to play a combustion supporting role, and the sealing of air in the annular sealing cover 1 is realized through the first packing sealing structure and the second packing sealing structure.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. The secondary air supply device of the rotary kiln is characterized by comprising an annular sealing cover, an annular sealing plate, an air pipe and a packing sealing structure; the annular sealing cover is fixedly arranged on the periphery of the rotary kiln cylinder body and is fixed on the rotary kiln foundation through a support; an air inlet pipe is arranged on the annular sealing cover along the tangential direction, the cross section of the annular sealing cover is U-shaped, and the open side of the annular sealing cover is closed by an annular sealing plate; at least 2 groups of air pipes are arranged along the circumferential direction of the rotary kiln cylinder body, each group of air pipes consists of a main air pipe and a branch air pipe, one end of the main air pipe penetrates through the annular sealing plate and then is inserted into the annular sealing cover, the other end of the main air pipe extends along the axial direction of the rotary kiln cylinder body, the branch air pipe is perpendicular to the main air pipe, one end of the branch air pipe is communicated with the main air pipe, and the other end of the branch air pipe penetrates through the outer wall of the rotary kiln cylinder body in the radial direction and then extends into the rotary kiln cylinder body; when the rotary kiln cylinder rotates, the air pipe and the annular sealing plate synchronously rotate, the annular sealing plate rotates relative to the annular sealing cover, the annular sealing cover and the annular sealing plate are sealed through a first packing sealing structure, and the annular sealing plate and the main air pipe are sealed through a second packing sealing structure; the first packing sealing structure consists of an inner packing positioning plate, an outer packing positioning plate, a first packing, a second packing, a compression bolt and a tightening nut, wherein the inner packing positioning plate is arranged in an annular sealing cover at the inner side of the annular sealing plate, the inner packing positioning plate is fixedly connected with the annular sealing cover, an annular packing groove I is arranged at the periphery of the inner packing positioning plate, and the first packing is arranged in the annular packing groove I; an outer packing positioning plate is arranged in an annular sealing cover at the outer side of the annular sealing plate, an annular packing groove II is arranged at the periphery of the outer packing positioning plate, and a packing II is arranged in the annular packing groove II; the fixed annular plate is arranged on the outer side of the annular sealing plate, a plurality of bolt holes are formed in the fixed annular plate along the circumferential direction, the tightening nuts are fixed on the outer sides of the bolt holes, the compression bolts penetrate through the corresponding tightening nuts and the bolt holes and apply pressure on the outer packing positioning plate, the annular sealing plate and the inner packing positioning plate, under the action of the pressure, the packing II is tightly attached to the outer side face of the annular sealing plate, the packing I is tightly attached to the inner side face of the annular sealing plate and the annular sealing cover, and circumferential sealing of the annular sealing plate and the annular sealing cover is achieved.
2. The secondary air supply device of the rotary kiln according to claim 1, wherein a flange is arranged at the outer end of the air inlet pipe and is connected with an air supply pipeline, and the other end of the air supply pipeline is connected with a fan.
3. The secondary air supply device of the rotary kiln according to claim 1, wherein the main air pipe consists of a straight pipe section and a connecting pipe section, the middle part of the straight pipe section is in sealing connection with the annular sealing plate, and one end of the straight pipe section positioned outside the annular sealing cover is fixedly connected with the connecting pipe section through a flange; the connecting pipe section extends along the axial direction of the rotary kiln cylinder body, a plurality of short connecting pipes are arranged on the connecting pipe section at intervals in parallel, and the short connecting pipes are fixedly connected with the branch air pipes through flanges.
4. The secondary air supply device of the rotary kiln according to claim 1, wherein the second packing sealing structure consists of a packing cylinder, packing and a packing gland, the packing cylinder is sleeved outside a straight pipe section of the main air pipe, the annular space between the packing cylinder and the main air pipe is filled with packing, one end of the packing cylinder is provided with a baffle for blocking the packing, the other end of the packing cylinder is fixedly connected with the annular sealing plate, the annular sealing plate is provided with a through hole, and the packing gland is tightly pressed on the packing after penetrating through the through hole, so that the sealing between the main air pipe and the annular sealing plate is realized.
5. The secondary air supply device of the rotary kiln according to claim 1, wherein the first packing and the second packing are graphite packing.
6. The secondary air supply device for a rotary kiln according to claim 4, wherein the filler is graphite packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815100.2A CN110425868B (en) | 2019-08-30 | 2019-08-30 | Secondary air supply device of rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815100.2A CN110425868B (en) | 2019-08-30 | 2019-08-30 | Secondary air supply device of rotary kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110425868A CN110425868A (en) | 2019-11-08 |
| CN110425868B true CN110425868B (en) | 2024-03-19 |
Family
ID=68416797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910815100.2A Active CN110425868B (en) | 2019-08-30 | 2019-08-30 | Secondary air supply device of rotary kiln |
Country Status (1)
| Country | Link |
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| CN (1) | CN110425868B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237327B (en) * | 2021-04-29 | 2023-10-20 | 安徽省泽乾冶金科技有限公司 | Rotary kiln air supply device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204421589U (en) * | 2014-12-09 | 2015-06-24 | 李春 | A kind of rotary kiln labyrinth type kiln end sealing device |
| CN204421590U (en) * | 2015-01-24 | 2015-06-24 | 四川九天建设工程有限公司 | A kind of rotary kiln Novel kiln head labyrinth gland |
| CN206146177U (en) * | 2016-11-09 | 2017-05-03 | 陈实 | Rotary kiln hood sealing device and use this sealing device's rotary kiln |
| CN208751265U (en) * | 2018-07-26 | 2019-04-16 | 赞皇金隅水泥有限公司 | A kind of rotary kiln end sealing device |
| CN109945204A (en) * | 2019-03-26 | 2019-06-28 | 江苏宜裕环保科技有限公司 | A kind of rotary kiln device for mending wind using segmentation |
| CN210602751U (en) * | 2019-08-30 | 2020-05-22 | 中冶焦耐(大连)工程技术有限公司 | Secondary air supply device for rotary kiln |
-
2019
- 2019-08-30 CN CN201910815100.2A patent/CN110425868B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204421589U (en) * | 2014-12-09 | 2015-06-24 | 李春 | A kind of rotary kiln labyrinth type kiln end sealing device |
| CN204421590U (en) * | 2015-01-24 | 2015-06-24 | 四川九天建设工程有限公司 | A kind of rotary kiln Novel kiln head labyrinth gland |
| CN206146177U (en) * | 2016-11-09 | 2017-05-03 | 陈实 | Rotary kiln hood sealing device and use this sealing device's rotary kiln |
| CN208751265U (en) * | 2018-07-26 | 2019-04-16 | 赞皇金隅水泥有限公司 | A kind of rotary kiln end sealing device |
| CN109945204A (en) * | 2019-03-26 | 2019-06-28 | 江苏宜裕环保科技有限公司 | A kind of rotary kiln device for mending wind using segmentation |
| CN210602751U (en) * | 2019-08-30 | 2020-05-22 | 中冶焦耐(大连)工程技术有限公司 | Secondary air supply device for rotary kiln |
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| Publication number | Publication date |
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| CN110425868A (en) | 2019-11-08 |
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