CN112747605B - Scraper type circular cooler - Google Patents
Scraper type circular cooler Download PDFInfo
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- CN112747605B CN112747605B CN202110003848.XA CN202110003848A CN112747605B CN 112747605 B CN112747605 B CN 112747605B CN 202110003848 A CN202110003848 A CN 202110003848A CN 112747605 B CN112747605 B CN 112747605B
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- air duct
- scraper
- trolley
- central air
- turnover trolley
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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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Abstract
The invention discloses a scraper type ring cooling machine, which comprises an annular revolving frame and a turnover trolley arranged on the revolving frame through a trolley shaft, wherein the lower part of the revolving frame is supported by an inner side supporting roller and an outer side supporting roller; the outer side of the central air duct is provided with a side air duct communicated with the central air duct, and the side air duct is provided with a plurality of fans; and a scraper is arranged at the lower part of the turnover trolley, and a gap is reserved between the periphery of the scraper and the inner side surface and the inner bottom surface of the central air duct, so that bulk materials and dust falling from the turnover trolley are brought into the discharge hopper through the scraper. The circular cooler has simple structure, relatively few required components, greatly reduced investment cost and improved production environment.
Description
Technical Field
The invention relates to the technical field of metallurgical sintering fuels, in particular to a circular cooler for cooling sintering ores unloaded from a sintering machine.
Background
The ring cooling machine is a ring cooling machine for short and is mainly used for cooling the sinter unloaded from the sintering machine, and the traditional ring cooling machine is mainly of a blast type.
At present, the ring cooling machine for sintering and pelletizing is provided with an air box under a trolley, and the air box is used for communicating an air channel and collecting bulk materials and dust. A double-layer ash discharging valve is arranged below each air box, an electric trolley and a trolley track are arranged below the double-layer ash discharging valve, bulk materials and dust can fall into the air boxes through a grate gap in the working process of the ring cooling machine, the double-layer ash discharging valve is set through a program, and the bulk materials and the dust are discharged into the electric trolley to be cleaned away after being opened and closed at intervals of a certain time.
The structure is provided with the air box, the double-layer ash discharge valve, the electric trolley and the track, and a control system of the double-layer ash discharge valve and the electric trolley, so that the investment cost is high; moreover, in order to ensure that the electric trolley smoothly passes through, a certain space is required to be reserved at the top of the electric trolley and a discharge hole of the double-layer dust discharging valve, and bulk materials and dust can form raised dust when falling into the electric trolley, so that the field environment is polluted.
And the air box is connected with the double-layer ash discharge valve through a flange, so that air leakage cannot be avoided, the double-layer ash discharge valve has a certain air leakage rate, and the air leakage rate is an important index of the circular cooler equipment and is avoided as much as possible.
In addition, certain space is required to be occupied by the air box, the double-layer ash discharge valve and the electric trolley in height, so that the height of the whole equipment and the height of the related equipment are increased, and the construction cost is increased.
Disclosure of Invention
The invention aims to provide a scraper type circular cooler. The circular cooler has simple structure, relatively few required components, greatly reduced investment cost and improved production environment.
In order to achieve the aim, the invention provides a scraper type ring cooling machine which comprises an annular revolving frame and a turnover trolley arranged on the revolving frame through a trolley shaft, wherein the lower part of the revolving frame is supported by an inner side supporting roller and an outer side supporting roller, and a central air duct positioned below the turnover trolley is arranged between the inner side supporting roller and the outer side supporting roller; the outer side of the central air duct is provided with a side air duct communicated with the central air duct, and the side air duct is provided with a plurality of fans; and a scraper is arranged at the lower part of the turnover trolley, and a gap is reserved between the periphery of the scraper and the inner side surface and the inner bottom surface of the central air duct, so that bulk materials and dust falling from the turnover trolley are brought into the discharge hopper through the scraper.
Preferably, the outer support rollers are located between the central air duct and the side air ducts, and the central air duct and the side air ducts are communicated via a connecting pipe at a position where there is no outer support roller.
Preferably, the side air duct is located outside the outer support roller, and the central air duct is communicated with the side air duct via a connecting pipe.
Preferably, in the cooling zone, the arrangement distance between adjacent connecting pipes is not more than the distance between adjacent scrapers.
Preferably, the connecting pipe is of an integral communication type structure avoiding the outer support roller.
Preferably, the side air duct is a non-full-circle annular air duct which forms a gap area with closed ends in the feeding area and the discharging area.
Preferably, rubber sealing is adopted between the upper edges of the two sides of the central air duct and the lower bottom plate of the revolving frame.
Preferably, the lower part of each turnover trolley is provided with the scraper, or the lower parts of the turnover trolleys at intervals are provided with the scrapers at intervals.
Preferably, further comprising a drive device; and the revolving frame drives the overturning trolley to perform circular motion on the inner side supporting roller and the outer side supporting roller under the action of the driving device.
Preferably, one end of each overturning trolley is provided with a rotating arm, and the rotating arm is rigidly connected with the trolley shaft and the overturning trolley; the turnover trolley is characterized by further comprising a pressing rail for controlling the movement track of the rotating arm, the pressing rail enables the turnover trolley to turn over in the unloading area, and the pressing rail enables the turnover trolley to be kept horizontal in other positions.
The scraper type circular cooler provided by the invention has the advantages that cooling air enters the central air duct through the side air duct and then enters the turnover trolley from the bottom upwards from the central air duct, in the running process of the turnover trolley, bulk materials and dust falling from the trolley can be brought into the discharge hopper through the scrapers, facilities such as an air box, a double-layer ash discharge valve, an electric trolley, a trolley track and the like are not needed, the double-layer ash discharge valve and an electric trolley control system can be correspondingly cancelled, in addition, the gap between each scraper and the central air duct is smaller, a relatively independent space is formed between every two scrapers, and the end sealing is not needed. Because facilities such as a lower air box, an ash discharge valve, a trolley, a belt and the like are eliminated, the structure of the circular cooler is simplified, the equipment investment cost is greatly reduced, meanwhile, because the facilities are eliminated, the height of the circular cooler can be integrally reduced, the air leakage rate can be obviously reduced, the effective utilization rate of wind energy of a fan can be effectively improved, and the cooling effect is improved.
In addition, because bulk cargo and dust get into the discharge hopper through central wind channel, bulk cargo and dust can not be arranged outward, can no longer produce the raise dust in the cold machine blast air region of ring and spill the material, reduce the pollution to the environment, improve the production environment greatly to reduce the artifical cost of cleaing away and spilling the material.
Drawings
FIG. 1 is a schematic view of an air duct layout of a scraper type annular cooler disclosed in the embodiment of the present invention;
FIG. 2 is an expanded view of the scraped ring cooler of FIG. 1;
FIG. 3 is a cross-sectional view of the scraped ring cooler of FIG. 1.
In the figure:
1. the automatic feeding device comprises a turnover trolley 2, a trolley shaft 3, a rotary frame 4, an inner side supporting roller 5, an outer side supporting roller 6, a rotary arm 7, a pressing rail 8, a central air duct 9, a side air duct 10, a fan 11, a scraper 12, a discharging hopper 13, a connecting pipe 15, a rubber sealing element 16, a feeding hopper A, a discharging area B and a feeding area
Detailed Description
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In this specification, terms such as "upper, lower, inner, and outer" are established based on positional relationships shown in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, the terms are not to be construed as absolutely limiting the scope of protection; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
Referring to fig. 1, fig. 2, and fig. 3, fig. 1 is a schematic view illustrating an air duct layout of a scraper-type annular cooler according to an embodiment of the present invention; FIG. 2 is an expanded view of the scraped ring cooler of FIG. 1; FIG. 3 is a cross-sectional view of the scraped ring cooler of FIG. 1.
As shown in the drawings, in an embodiment, the scraper ring cooler provided by the invention operates in a counterclockwise direction, the turnover trolley 1 is connected with the revolving frame 3 through the trolley shaft 2, the revolving frame 3 is of an annular rigid structure, the lower part of the revolving frame 3 is supported by the inner side supporting rollers 4 and the outer side supporting rollers 5, the inner side supporting rollers 4 and the outer side supporting rollers 5 are respectively arranged along a circular track, the arrangement radius of the inner side supporting rollers 4 is smaller than that of the outer side supporting rollers 5, and under the action of the driving device, the revolving frame 3 drives the turnover trolley 1 to make a circular motion on the inner side supporting rollers 4 and the outer side supporting rollers 5.
One end of the turning trolley 1 is provided with a rotating arm 6, the rotating arm 6 is rigidly connected with the trolley shaft 2 and the turning trolley 1, and the movement track of the rotating arm 6 is controlled by a pressure rail 7, so that the turning trolley 1 is turned in the discharging area A, and the rest positions are horizontal.
The below of upset platform truck 1 is equipped with central wind channel 8 between inboard backing roll 4 and outside backing roll 5, the projection in central wind channel 8 is "C" shape roughly, the region at its breach place is corresponding to unloading district A and feed district B, on the cross section, central wind channel 8 is "U" shape that the opening is ascending roughly, the last border of its both sides is equipped with rubber seal 15, and it is sealed with the bottom surface of revolving frame 3 through rubber seal 15, in order to form the movable contact surface, reduce the air leakage, simultaneously, can prevent from the interval between central wind channel 8 and the revolving frame 3 outwards revealing of bulk cargo and bulk cargo dust that fall down from upset platform truck 1.
The bottom of the air duct is an annular whole plate, a side air duct 9 communicated with the central air duct 8 is arranged on the outer side of the central air duct, and a plurality of fans 10 are arranged on the side air duct 9; the lower part of the turnover trolley 1 is provided with a scraper 11, a gap is left between the periphery of the scraper 11 and the inner side surface and the inner bottom surface of the central air duct 8, so that bulk materials and dust falling from the turnover trolley 1 are brought into a discharge hopper 12 through the scraper, the scraper 11 and the turnover trolley 1 are rigidly connected (for example, welded), after the bulk materials and the dust falling into the central air duct 8 from the turnover trolley 1, the bulk materials and the dust move together with the turnover trolley 1 under the action of the scraper 11, and fall into the discharge hopper 12 due to the action of gravity at the position of the discharge hopper 12, and then enter the next process along with sinter, thereby reducing the pollution to the environment,
of course, the scraper 11 may be in the shape illustrated in the drawings, or may be in other structural forms, and mainly realizes the function of taking away bulk materials and dust, and may be flexibly designed according to actual needs.
The side air flue 9 is an integral communicating structure, the outer side supporting rollers 5 are positioned between the central air flue 8 and the side air flue 9, the positions of the central air flue 8 and the side air flue 9, which are not provided with the outer side supporting rollers 5, are connected by a connecting pipe 13, the side air flue 9 is externally connected with a plurality of fans 10, the fans 10 shown in the figure are four, the fans are arranged at intervals along the circumferential direction outside the side air flue 9, each fan 10 is respectively communicated with the side air flue 9 through a pipeline, cooling air enters the central air flue 8 through the side air flue 9 and a communicating pipe 13 and upwards enters the turnover trolley, and sintered ore in the cooling trolley is cooled
In other embodiments, the side air duct 9 may be located below the outer support roller 5, the central air duct 8 and the side air duct 9 may be communicated via a connecting pipe 13, and the connecting pipe 13 may be an integral communicating structure avoiding the outer support roller 5.
Through the clearance between reasonable design scraper blade 11 and 8 medial surfaces in central wind channel and the interior bottom surface, for example, between 1mm to 10mm, can be at central wind channel 8, side wind channel 9 and the district A of unloading, feed district B department of meeting, realize the end seal, simultaneously, the interval of arranging that need to guarantee adjacent connecting pipe 13 in the cooling zone is not more than the distance between the adjacent scraper blade 11, in order to guarantee to the wind channel between arbitrary two adjacent scraper blades 11, at 1 removal in-process of upset platform truck, connecting pipe 13 is linked together with it all the time, make the cooling air can continuously get into upset platform truck 1, avoid appearing the condition that the cooling air interrupts, thereby reach the required cooling effect of production.
In another embodiment, the gap between the scraper 11 and the inner side surface of the central air duct 8 is larger than the gap between the scraper 11 and the inner bottom surface of the central air duct 8, when the scraper 11 moves along with the turnover trolley 1, because the gap between the scraper 11 and the inner bottom surface of the central air duct 8 is smaller, bulk materials and dust deposited on the inner bottom surface of the central air duct 8 can be removed as much as possible, and meanwhile, if the bulk materials and dust are too thick, the resistance is too large, the bulk materials and dust can enter the rear space of the scraper 11 from the larger gaps on the two sides of the scraper 11 after being pushed up, and the next scraper 11 continues to clean, so that the cleaning efficiency and the cleaning effect are ensured, the scraper 11 can smoothly move, the phenomena of clamping stagnation and the like cannot occur, meanwhile, the abrasion to the scraper 11 can be reduced, and the service life of the scraper 11 is prolonged.
In order to avoid cooling air from entering the discharging area A and the feeding area B, the side air duct 9 is designed into a non-full-circle annular air duct, a gap area with closed end parts is formed between the discharging area A and the feeding area B, meanwhile, the central air duct 8 is also sealed on the outer side surfaces of the discharging area A and the feeding area B, and a connecting pipe 13 is not arranged to prevent bulk materials and dust from escaping from the side surfaces.
In this embodiment, the lower portion of each turnover trolley 1 is provided with a scraper 11, as a further improvement, the scrapers 11 may be provided at the lower portion of the turnover trolley 1 at intervals, that is, the scrapers 11 may be arranged at intervals of a plurality of turnover trolleys 1, for example, starting from the turnover trolley 1, if one scraper 11 is provided at every two turnover trolleys 1, the turnover trolley 1 provided with the scraper 11 is a first, fourth, seventh, tenth … … turnover trolley, and so on, or one scraper 1 may be provided at every three or four turnover trolleys 1. Thus, the efficiency of cleaning bulk materials and dust can be ensured, and the number of the scrapers 11 can be reduced properly.
The above embodiments are merely preferred embodiments of the present invention, and are not limited thereto, and on the basis of the above embodiments, various embodiments can be obtained by performing targeted adjustment according to actual needs. For example, the side air ducts 9 may be circular or have other shapes, the arrangement position may be below the supporting roller or have other positions, the cross section of the central air duct 8 may be rectangular, inverted trapezoid or have other shapes, the scrapers 11 may have other forms, and the like. This is not illustrated here, since many implementations are possible.
In the operation process, cooling air enters the central air duct 8 through the side air duct 9, and then enters the turnover trolley 1 from the bottom upwards from the central air duct 8, in the moving process of the turnover trolley 1, bulk materials and dust falling from the turnover trolley 1 can be brought into the discharge hopper 12 through the scraper 11, a double-layer ash discharge valve, an electric trolley and a trolley track are not needed, a double-layer ash discharge valve and an electric trolley control system can be correspondingly cancelled, facilities such as a lower air box, an ash discharge valve, a trolley, a belt and the like are cancelled, so that the equipment investment cost is greatly reduced, and meanwhile, due to the cancellation of the facilities, the height of the annular cooler can be integrally lowered.
Moreover, because the clearance between the scrapers 11 and the central air duct 8 is small, and a relatively independent space is formed between every two scrapers 11, end sealing is not needed, bulk materials and dust enter the discharge hopper 12 through the central air duct 8, and the air blast area of the annular cooler can not generate dust raising and scattering, so that the environment of a working area is greatly improved, and the cost of manual cleaning is reduced.
The scraper type circular cooler provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, it is possible to make various improvements and modifications to the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A scraper type circular cooler comprises a rotary frame (3) and a turnover trolley (1) installed on the rotary frame (3) through a trolley shaft (2), wherein the lower part of the rotary frame (3) is supported by an inner side supporting roller (4) and an outer side supporting roller (5), and is characterized in that a central air duct (8) located below the turnover trolley (1) is arranged between the inner side supporting roller (4) and the outer side supporting roller (5); a side air duct (9) communicated with the central air duct (8) is arranged on the outer side of the central air duct, and a plurality of fans (10) are arranged on the side air duct (9); a scraper (11) is arranged at the lower part of the turnover trolley (1), and a gap is reserved between the periphery of the scraper (11) and the inner side surface and the inner bottom surface of the central air duct (8) so as to bring bulk materials and dust falling from the turnover trolley (1) into a discharge hopper (12) through the scraper (11).
2. The scraper ring cooler according to claim 1, characterised in that the outer support rollers (5) are located between the central air duct (8) and the side air ducts (9), and the central air duct (8) and the side air ducts (9) are in communication via a connecting pipe (13) at a position where no outer support rollers (5) are provided.
3. The scraper ring cooler according to claim 1, characterised in that the side air ducts (9) are located outside the outside backup roll (5), the central air duct (8) being in communication with the side air ducts (9) via a connecting pipe (13).
4. The scraper ring cooler according to claim 2 or 3, characterized in that in the cooling zone, the arrangement pitch of adjacent connecting pipes (13) is not greater than the distance between adjacent scrapers (11).
5. The scraper ring cooler according to claim 2 or 3, characterised in that the connecting pipe (13) is of an integral communicating structure avoiding the outer support roller (5).
6. The scraper ring cooler according to claim 1, characterised in that the side air channel (9) is a non-full-circle annular air channel which forms a gap region with closed ends in the feed and discharge zones.
7. The scraper ring cooler according to claim 1, characterized in that the upper edges of both sides of the central air duct (8) are sealed with the lower bottom plate of the revolving frame (3) by rubber.
8. The scraper ring cooler according to claim 1, characterized in that the lower part of each turnover trolley (1) is provided with the scraper (11), or the lower part of every other turnover trolley (1) is provided with the scraper (11) every other turnover trolley (1).
9. The scraped ring cooler of claim 1 further comprising a drive means; revolving frame (3) are in under drive arrangement's the effect, drive upset platform truck (1) is in carry out circular motion on inboard backing roll (4) and outside backing roll (5).
10. The scraper ring cooler according to claim 1, characterized in that one end of each turnover trolley (1) is provided with a rotating arm (6), and the rotating arm (6) is rigidly connected with the trolley shaft (2) and the turnover trolley (1); the turnover trolley is characterized by further comprising a pressing rail (7) used for controlling the movement track of the rotating arm (6), wherein in the unloading area, the pressing rail (7) enables the turnover trolley (1) to turn over, and in other positions, the pressing rail (7) enables the turnover trolley (1) to be kept horizontal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110003848.XA CN112747605B (en) | 2021-01-04 | 2021-01-04 | Scraper type circular cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110003848.XA CN112747605B (en) | 2021-01-04 | 2021-01-04 | Scraper type circular cooler |
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| Publication Number | Publication Date |
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| CN112747605A CN112747605A (en) | 2021-05-04 |
| CN112747605B true CN112747605B (en) | 2022-05-03 |
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| CN202110003848.XA Active CN112747605B (en) | 2021-01-04 | 2021-01-04 | Scraper type circular cooler |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1926753A1 (en) * | 1969-05-24 | 1970-11-26 | Metallgesellschaft Ag | Wiper device for emptying coolers |
| SU467935A1 (en) * | 1974-01-10 | 1975-04-25 | Всесоюзный научно-исследовательский институт металлургической теплотехники | Cup cooler |
| CN201740390U (en) * | 2010-04-16 | 2011-02-09 | 河北钢铁股份有限公司唐山分公司 | Sinter cooler discharge device |
| CN102645104A (en) * | 2012-05-18 | 2012-08-22 | 中冶华天南京工程技术有限公司 | Rail pressing type water seal ring cold machine |
| CN104034171A (en) * | 2014-05-29 | 2014-09-10 | 翁玉明 | Circular suspension type scraper plate conveying bulk cargo collection device |
| CN104101218A (en) * | 2013-04-14 | 2014-10-15 | 李纪萱 | Supporting rail-type labyrinth water sealing circular cooler |
| KR20160017212A (en) * | 2014-08-01 | 2016-02-16 | 주식회사 포스코 | Apparatus for cooling sintered ore |
| CN205037775U (en) * | 2015-07-28 | 2016-02-17 | 山东省冶金设计院股份有限公司 | Cold machine of improved generation pelletizing ring |
| CN209726846U (en) * | 2019-01-11 | 2019-12-03 | 湖南中冶长天重工科技有限公司 | A kind of fixed dredging structure of ring cold machine upper flume |
-
2021
- 2021-01-04 CN CN202110003848.XA patent/CN112747605B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1926753A1 (en) * | 1969-05-24 | 1970-11-26 | Metallgesellschaft Ag | Wiper device for emptying coolers |
| SU467935A1 (en) * | 1974-01-10 | 1975-04-25 | Всесоюзный научно-исследовательский институт металлургической теплотехники | Cup cooler |
| CN201740390U (en) * | 2010-04-16 | 2011-02-09 | 河北钢铁股份有限公司唐山分公司 | Sinter cooler discharge device |
| CN102645104A (en) * | 2012-05-18 | 2012-08-22 | 中冶华天南京工程技术有限公司 | Rail pressing type water seal ring cold machine |
| CN104101218A (en) * | 2013-04-14 | 2014-10-15 | 李纪萱 | Supporting rail-type labyrinth water sealing circular cooler |
| CN104034171A (en) * | 2014-05-29 | 2014-09-10 | 翁玉明 | Circular suspension type scraper plate conveying bulk cargo collection device |
| KR20160017212A (en) * | 2014-08-01 | 2016-02-16 | 주식회사 포스코 | Apparatus for cooling sintered ore |
| CN205037775U (en) * | 2015-07-28 | 2016-02-17 | 山东省冶金设计院股份有限公司 | Cold machine of improved generation pelletizing ring |
| CN209726846U (en) * | 2019-01-11 | 2019-12-03 | 湖南中冶长天重工科技有限公司 | A kind of fixed dredging structure of ring cold machine upper flume |
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