CN115164603B - Self-cleaning sintering circular cooler trolley - Google Patents
Self-cleaning sintering circular cooler trolley Download PDFInfo
- Publication number
- CN115164603B CN115164603B CN202211019949.7A CN202211019949A CN115164603B CN 115164603 B CN115164603 B CN 115164603B CN 202211019949 A CN202211019949 A CN 202211019949A CN 115164603 B CN115164603 B CN 115164603B
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- Prior art keywords
- trolley
- plate
- cooler
- ring
- annular
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
- F27D15/0206—Cooling with means to convey the charge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/12—Travelling or movable supports or containers for the charge
- F27D3/123—Furnace cars
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D5/00—Supports, screens, or the like for the charge within the furnace
- F27D5/0062—Shields for the charge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0073—Seals
- F27D99/0076—Furnace car seals, i.e. seals used in continuous furnaces or kilns for preventing gas or heat exchange between heating chamber and the area comprising driving means
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a self-cleaning sintering annular cooler trolley, and belongs to the technical field of annular cooler trolley sealing. The invention comprises a ring cooler, wherein the ring cooler comprises a ring cooler trolley, a ring cooler bellows and a ring cooler fan housing; the utility model discloses a cold quick-witted platform truck of ring with cold quick-witted bellows junction be provided with movable seal board and quiet closing plate, the side of cold quick-witted platform truck of ring is provided with the thermal-insulated breast board of platform truck, the outside of the thermal-insulated breast board of platform truck is provided with backplate and backplate down, go up backplate and backplate down and be connected, the thermal-insulated breast board of platform truck and backplate down between the backplate clearance form the negative pressure passageway. The invention utilizes the corresponding negative pressure channel formed between the upper guard plate and the trolley heat insulation baffle plate, dust-containing gas leaked from the two sealing plates is sucked into the annular cooler fan housing at the upper part of the annular cooler trolley by negative pressure, thereby ensuring normal sinter cooling production, effectively inhibiting dust-containing gas from overflowing and improving environmental protection effect.
Description
Technical Field
The invention relates to the technical field of ring cooling machine trolley sealing, in particular to a self-cleaning sintering ring cooling machine trolley.
Background
In the process of producing the sinter by the ferrous metallurgy sintering machine, the hot sinter at 700-800 ℃ discharged by the sintering machine must be cooled to below 150 ℃ by a blast ring cooler to be normally transported to a blast furnace smelting process, and the waste heat air at high temperature (450 ℃) and the waste heat air at the next high temperature (300 ℃) generated in the cooling process of the sinter must be subjected to waste heat recovery by a waste heat boiler, so that the produced steam is used for sintering production and power generation. In order to improve the waste heat recovery efficiency and the quality of waste heat air, the low-temperature air (about 100 ℃) after waste heat recovery is pressurized by a circulating fan and then circulated to an annular cooler bellows for use. See attached "schematic diagram for recovering waste heat of circular cooler".
Because the recycled waste heat air contains higher dust (2000 mg/Nm 3), although the dust contained in the low-temperature waste heat air is still up to 300mg/Nm3 after heat exchange and sedimentation of the waste heat boiler. Because the blast circular cooler is operated by positive pressure, the pressure of the lower bellows of the trolley is about +3500Pa, so that the friction ends of the movable sealing plate and the static sealing plate used for sealing between the moving circular cooler trolley and the fixed bellows inevitably generate gaps due to relative movement and abrasion, external air leakage is generated under the action of pressure difference, and the air leakage rate is about 5-10% in a normal state, so that dust carried along with wind causes serious pollution to the surrounding environment.
Disclosure of Invention
1. Technical problem to be solved by the invention
Aiming at the defects and shortcomings in the prior art, the invention provides the self-cleaning sintering circular cooler trolley, a hot air interlayer is formed between the circular cooler trolley heat insulation baffle plate and the upper guard plate, the heat preservation and insulation effect is further enhanced, the energy waste is reduced, the upper guard plate and the trolley heat insulation baffle plate are penetrated up and down, corresponding negative pressure channels are formed, dust-containing gas leaked from the two sealing plates of the driven sealing plate and the static sealing plate is sucked into the circular cooler fan housing at the upper part of the circular cooler trolley by negative pressure, the pollution caused by dust overflow caused by air leakage is completely avoided, the normal cooling production of sintered ores can be ensured, the dust-containing gas overflow can be effectively restrained, and the environmental protection effect is improved.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the invention relates to a self-cleaning sintering circular cooler trolley, which comprises a circular cooler, wherein the circular cooler comprises a circular cooler trolley, a circular cooler bellows and a circular cooler fan housing, the bottom of the circular cooler trolley is provided with the circular cooler bellows, and the top of the circular cooler trolley is provided with the circular cooler fan housing;
the connection part of the annular cooler trolley and the annular cooler bellows is provided with a movable sealing plate and a static sealing plate, the side edge of the annular cooler trolley is provided with a trolley heat insulation baffle, the outer side of the trolley heat insulation baffle is provided with an upper guard plate and a lower guard plate, the upper guard plate is connected with the lower guard plate, and the lower edge of the lower guard plate extends to one side of the plate surface of the static sealing plate;
the trolley heat insulation baffle plate, the upper guard plate and the lower guard plate form a negative pressure channel, the output end of the negative pressure channel extends to the inner side of the annular cooling machine trolley, and an upper sealing plate is arranged between the upper edge of the upper guard plate and the annular cooling machine trolley.
Further, the output end of the annular cooler fan housing is connected with a waste heat boiler, the output end of the waste heat boiler is provided with a circulating fan, and low-temperature air output by the waste heat boiler is pressurized by the circulating fan and then is conveyed to the annular cooler air box.
Further, the gaps among the trolley heat insulation baffle plates, the upper guard plate and the lower guard plate form a hot air interlayer.
Further, the clearance between the lower edge of the lower guard plate and the plate surface of the static sealing plate is less than or equal to 5mm.
Further, the cavity of the annular cooler trolley is filled with sinter.
Further, the top of last backplate be provided with the backup pad down, the side of ring cold machine platform truck is provided with the backup pad, the upper end of upper seal plate is fixed with last backup pad through the bolt, the lower extreme of upper seal plate forms the dynamic laminating with the face of backup pad down.
Further, the lower support plate and the upper support plate are both in a fold line shape, and the upper edge of the lower support plate and the lower edge of the upper support plate are positioned on the same horizontal line.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
the invention can keep the air quantity balance of the waste heat recovery air circulation system of the annular cooler without supplementing cold air; the hot air interlayer is formed between the heat insulation baffle plate of the annular cooler trolley and the upper guard plate, the heat insulation effect is further enhanced, the energy waste is reduced, the upper guard plate and the trolley heat insulation baffle plate are transparent up and down, a corresponding negative pressure channel is formed, dust-containing gas leaked from the two sealing plates of the driven sealing plate and the static sealing plate is sucked into the annular cooler fan housing at the upper part of the annular cooler trolley by negative pressure, the pollution caused by dust overflow caused by air leakage is completely avoided, normal sinter cooling production can be ensured, dust-containing gas overflow can be effectively restrained, and the environmental protection effect is improved.
Drawings
FIG. 1 is a block diagram of a waste heat recovery system of the present invention;
FIG. 2 is a top view of the negative pressure channel structure of the present invention;
FIG. 3 is a graph showing the distribution effect of the sealing plate according to the present invention;
fig. 4 is a view showing an installation structure of an upper sealing plate of the present invention.
In the figure: 1. a ring cooler; 2. a waste heat boiler; 3. a circulating fan; 4. annular cooling machine trolley; 401. an upper support plate; 5 ring cooler bellows; 6. a ring cooler fan cover; 7. the trolley heat insulation baffle plate; 8. an upper guard board; 801. a lower support plate; 9. a lower guard board; 10. a movable sealing plate; 11. a static sealing plate; 12. an upper sealing plate; 13. sintering ore; 14. negative pressure channel.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples:
example 1
As can be seen from fig. 1 to 4, the self-cleaning sintering annular cooler trolley of the embodiment comprises an annular cooler 1, wherein the annular cooler 1 comprises an annular cooler trolley 4, an annular cooler bellows 5 and an annular cooler fan housing 6, the annular cooler bellows 5 is arranged at the bottom of the annular cooler trolley 4, and the annular cooler fan housing 6 is arranged at the top of the annular cooler trolley 4;
the output end of the annular cooler fan housing 6 is connected with the exhaust-heat boiler 2, the output end of the exhaust-heat boiler 2 is provided with the circulating fan 3, and low-temperature air output by the exhaust-heat boiler 2 is pressurized by the circulating fan 3 and then is conveyed to the annular cooler air box 5.
The connection part of the annular cooler trolley 4 and the annular cooler bellows 5 is provided with a movable sealing plate 10 and a static sealing plate 11, the side edge of the annular cooler trolley 4 is provided with a trolley heat insulation baffle 7, the outer side of the trolley heat insulation baffle 7 is provided with an upper guard plate 8 and a lower guard plate 9, the upper guard plate 8 is connected with the lower guard plate 9, the lower edge of the lower guard plate 9 extends to one side of the plate surface of the static sealing plate 11, the gap between the lower edge of the lower guard plate 9 and the plate surface of the static sealing plate 11 is less than or equal to 5mm, and the gap is as small as possible so as not to generate large air leakage;
the cavity of the annular cooler trolley 4 is filled with sinter 13, gaps between the trolley heat insulation baffle 7 and the upper guard plate 8 as well as between the trolley heat insulation baffle and the lower guard plate 9 form a hot air interlayer, and the hot air interlayer is positioned on the outer side of the sinter 13, so that the thermal insulation effect can be achieved, the heat dissipation is reduced, and the subsequent waste heat recovery effect is improved.
The gaps between the trolley heat insulation baffle 7, the upper guard plate 8 and the lower guard plate 9 form a negative pressure channel 14, the output end of the negative pressure channel 14 extends to the inner side of the annular cooler trolley 4, and an upper sealing plate 12 is arranged between the upper edge of the upper guard plate 8 and the annular cooler trolley 4.
The top of the upper guard plate 8 is provided with a lower support plate 801, the side edge of the annular cooler trolley 4 is provided with an upper support plate 401, the upper end of an upper sealing plate 12 is fixed with the upper support plate 401 through bolts, and the lower end of the upper sealing plate 12 is in dynamic fit with the plate surface of the lower support plate 801.
The lower support plate 801 and the upper support plate 401 are all in a fold line shape, and the upper edge of the lower support plate 801 and the lower edge of the upper support plate 401 are positioned on the same horizontal line.
The upper supporting plate 401 provides a supporting foundation for the installation of the upper sealing plate 12, the upper edge of the upper guard plate 8 is sealed by the upper sealing plate 12 at the opening between the annular cooler trolley 4, a physical fold line channel is formed between the upper sealing plate 12 and the negative pressure channel 14, the negative pressure gas can not be influenced, and the negative pressure gas is prevented from overflowing.
The invention can ensure normal sinter 13 cooling production and effectively inhibit dusty gas from overflowing, a layer of upper guard plate 8 is additionally arranged on the outer side of the trolley heat insulation baffle plate 7, a certain gap is reserved between the upper guard plate 8 and the trolley heat insulation baffle plate 7, the upper guard plate 8 and the trolley heat insulation baffle plate 7 are enabled to be transparent up and down, a corresponding negative pressure channel 14 is formed, a movable sealing plate 10 and a static sealing plate 11 are arranged between the moving annular cooler trolley 4 and the fixed annular cooler bellows 5, a lower guard plate 9 is arranged on the trolley body of the annular cooler trolley 4 on the outer side, the lower guard plate 9 and the upper guard plate 8 are communicated with each other, and gas can pass through freely.
The specific working process is as follows:
when the circulating air system for recovering the waste heat of the annular cooler works normally, under the action of the circulating fan 3, pressure difference of 4000Pa exists between the annular cooler bellows 5 positioned at the lower part of the annular cooler trolley 4 and the annular cooler fan housing 6 positioned at the upper part of the annular cooler trolley 4, and air can pass through the hot sinter 13 material layer to form heat exchange so as to cool the sinter 13.
Because the pressure in the upper annular cooler fan housing 6 of the annular cooler trolley 4 is negative pressure (usually about-500 Pa), under the action of the negative pressure, the gaps between the lower guard plate 9 and the upper guard plate 8 communicated with the annular cooler fan housing 6 can form a pumping force from bottom to top, so that dust-containing gas leaked from the two sealing plates of the driven sealing plate 10 and the static sealing plate 11 is also pumped into the upper annular cooler fan housing 6 of the annular cooler trolley 4 by the negative pressure, and pollution caused by dust overflow caused by air leakage is completely avoided.
The invention can keep the air quantity balance of the waste heat recovery air circulation system of the annular cooler without supplementing cold air; the hot air interlayer is formed between the annular cooler trolley heat insulation baffle 7 and the upper guard plate 8, the heat insulation effect is further enhanced, the energy waste is reduced, the upper guard plate 8 and the trolley heat insulation baffle 7 are transparent up and down, a corresponding negative pressure channel 14 is formed, dust-containing gas leaked from two sealing plates of the driven sealing plate 10 and the static sealing plate 11 is sucked into the annular cooler fan housing 6 at the upper part of the annular cooler trolley 4 by negative pressure, the pollution caused by dust overflow caused by air leakage is completely avoided, normal agglomerate 13 cooling production can be ensured, dust-containing gas overflow can be effectively restrained, and the environmental protection effect is improved.
The invention has no special requirements on equipment and materials, only needs to modify the annular cooler trolley 4, and does not need to modify the main structures of the annular cooler body and the trolley, so that the technology can be directly adopted in newly designed sintering projects and corresponding old system modification projects.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (5)
1. The utility model provides a self-cleaning formula sintering ring cooler platform truck, includes ring cooler (1), its characterized in that: the ring cooler (1) comprises a ring cooler trolley (4), a ring cooler bellows (5) and a ring cooler fan housing (6), wherein the ring cooler bellows (5) is arranged at the bottom of the ring cooler trolley (4), and the ring cooler fan housing (6) is arranged at the top of the ring cooler trolley (4);
the connection part of the annular cooler trolley (4) and the annular cooler bellows (5) is provided with a movable sealing plate (10) and a static sealing plate (11), the side edge of the annular cooler trolley (4) is provided with a trolley heat insulation baffle (7), the outer side of the trolley heat insulation baffle (7) is provided with an upper guard plate (8) and a lower guard plate (9), the upper guard plate (8) is connected with the lower guard plate (9), and the lower edge of the lower guard plate (9) extends to one side of the plate surface of the static sealing plate (11);
the trolley heat insulation baffle plate (7) and the upper guard plate (8) and the lower guard plate (9) form a negative pressure channel (14), the output end of the negative pressure channel (14) extends to the inner side of the annular cooling trolley (4), and an upper sealing plate (12) is arranged between the upper edge of the upper guard plate (8) and the annular cooling trolley (4);
the top of the upper guard plate (8) is provided with a lower support plate (801), the side edge of the annular cooler trolley (4) is provided with an upper support plate (401), the upper end of the upper seal plate (12) is fixed with the upper support plate (401) through bolts, and the lower end of the upper seal plate (12) is in dynamic fit with the plate surface of the lower support plate (801);
the lower support plate (801) and the upper support plate (401) are in a fold line shape, and the upper edge of the lower support plate (801) and the lower edge of the upper support plate (401) are positioned on the same horizontal line.
2. The self-cleaning sintered ring cooling machine trolley according to claim 1, wherein: the output end of the annular cooler fan housing (6) is connected with a waste heat boiler (2), the output end of the waste heat boiler (2) is provided with a circulating fan (3), and low-temperature air output by the waste heat boiler (2) is conveyed to the annular cooler air box (5) after being pressurized by the circulating fan (3).
3. The self-cleaning sintered ring cooling machine trolley according to claim 1, wherein: and a hot air interlayer is formed between the trolley heat insulation baffle plate (7) and gaps between the upper guard plate (8) and the lower guard plate (9).
4. The self-cleaning sintered ring cooling machine trolley according to claim 1, wherein: the clearance between the lower edge of the lower guard plate (9) and the plate surface of the static sealing plate (11) is less than or equal to 5mm.
5. The self-cleaning sintered ring cooling machine trolley according to claim 1, wherein: the cavity of the annular cooler trolley (4) is filled with sinter (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211019949.7A CN115164603B (en) | 2022-08-24 | 2022-08-24 | Self-cleaning sintering circular cooler trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211019949.7A CN115164603B (en) | 2022-08-24 | 2022-08-24 | Self-cleaning sintering circular cooler trolley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115164603A CN115164603A (en) | 2022-10-11 |
| CN115164603B true CN115164603B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211019949.7A Active CN115164603B (en) | 2022-08-24 | 2022-08-24 | Self-cleaning sintering circular cooler trolley |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201032376Y (en) * | 2007-04-05 | 2008-03-05 | 中冶长天国际工程有限责任公司 | Trolley lower part sealing device for circular cooler |
| CN202141332U (en) * | 2011-06-27 | 2012-02-08 | 东北大学 | Sealing device of sintering circular cooler |
| CN207019482U (en) * | 2017-06-09 | 2018-02-16 | 焦作市迈科冶金机械有限公司 | A kind of central cooler cover sealing device |
| CN209802074U (en) * | 2019-09-25 | 2019-12-17 | 北京中航泰达环保科技股份有限公司 | flue gas seal cover and sintering flue gas circulation system |
| CN112857062A (en) * | 2019-11-27 | 2021-05-28 | 中冶京诚工程技术有限公司 | Circular cooler, circular cooling method of sinter and sinter waste heat recovery system |
| CN218097258U (en) * | 2022-08-24 | 2022-12-20 | 中冶华天工程技术有限公司 | Self-cleaning type trolley of sintering circular cooler |
-
2022
- 2022-08-24 CN CN202211019949.7A patent/CN115164603B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201032376Y (en) * | 2007-04-05 | 2008-03-05 | 中冶长天国际工程有限责任公司 | Trolley lower part sealing device for circular cooler |
| CN202141332U (en) * | 2011-06-27 | 2012-02-08 | 东北大学 | Sealing device of sintering circular cooler |
| CN207019482U (en) * | 2017-06-09 | 2018-02-16 | 焦作市迈科冶金机械有限公司 | A kind of central cooler cover sealing device |
| CN209802074U (en) * | 2019-09-25 | 2019-12-17 | 北京中航泰达环保科技股份有限公司 | flue gas seal cover and sintering flue gas circulation system |
| CN112857062A (en) * | 2019-11-27 | 2021-05-28 | 中冶京诚工程技术有限公司 | Circular cooler, circular cooling method of sinter and sinter waste heat recovery system |
| CN218097258U (en) * | 2022-08-24 | 2022-12-20 | 中冶华天工程技术有限公司 | Self-cleaning type trolley of sintering circular cooler |
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| Publication number | Publication date |
|---|---|
| CN115164603A (en) | 2022-10-11 |
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Effective date of registration: 20230712 Address after: 243000 Fu Chang Industrial Park, 259 HSI Nan Road, Ma'anshan economic and Technological Development Zone, Anhui Applicant after: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC Applicant after: HUATIAN NANJING ENGINEERING & TECHNOLOGY CORPORATION, MCC Address before: 243000 Fu Chang Industrial Park, 259 HSI Nan Road, Ma'anshan economic and Technological Development Zone, Anhui Applicant before: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC |
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