CN212758918U - Timing automatic slag discharging device of blast furnace coal injection coal mill - Google Patents
Timing automatic slag discharging device of blast furnace coal injection coal mill Download PDFInfo
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- CN212758918U CN212758918U CN202021247609.6U CN202021247609U CN212758918U CN 212758918 U CN212758918 U CN 212758918U CN 202021247609 U CN202021247609 U CN 202021247609U CN 212758918 U CN212758918 U CN 212758918U
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Abstract
The utility model relates to a timing automatic slag discharging device of a blast furnace coal injection coal mill, which comprises a coal mill, wherein the bottom of the side wall of the coal mill is provided with a slag discharging channel; the slag blocking plate is hinged with one end of the slag discharging channel and is suitable for covering an opening at the end part of the slag discharging channel; the output end of the cylinder is fixed with a connecting rod; the steel wire rope is connected with the connecting rod and the slag stopping plate; when the cylinder works, the slag stopping plate is driven to turn over through the connecting rod and the steel wire rope; the electromagnetic directional valve is controlled by the timer to be electrified or not and drives the rotation direction of the output end of the air cylinder; the air source of the electromagnetic directional valve is provided by a compressed air network; the spacing positive and negative rotation of the cylinder is realized through the cooperation of the electromagnetic directional valve, so that the slag blocking plate can open and close the opening of the slag discharging channel through the connecting rod and the steel wire rope, the automatic discharge of impurity hard blocks is facilitated, the occurrence of fire slag in the coal mill is prevented, and the stable production of the blast furnace is ensured.
Description
Technical Field
The utility model relates to a sediment device is arranged to the coal pulverizer, specifically is a regularly automatic sediment device of arranging of blast furnace coal injection coal pulverizer.
Background
In the production process of the coal mill, hard sundries, coal gangue and the like in raw coal are not easy to crush, and are thrown to a nozzle air ring opening of the outer ring of the grinding disc by the centrifugal force of the rotary grinding disc. When the dry gas flowing upwards in the wind ring can not support the weight of the hard impurity blocks such as coal gangue and the like, the impurities fall to the next layer of space of the grinding disc under the action of gravity, and naturally fall down when being scraped to the position of the slag discharging port through the annular scraper conveyor and are accumulated in the chute of the slag discharging port. When a certain amount of coal gangue is accumulated, the self weight of the coal gangue is greater than the negative pressure suction force in the mill, a certain gap is extruded, a part of accumulated coal gangue is discharged, after the coal gangue is discharged to a certain amount, the self weight of the coal gangue is less than the negative pressure suction force in the mill, and the movable cover plate is automatically closed.
However, because the blast furnace has a large demand for coal injection quantity, the existing coal mill basically works with high load, and part of coal gangue is inevitably clamped at a slag discharge port in the production process, so that a large amount of cold air is sucked from the slag discharge port, and the suction of the cold air not only increases the oxygen value of the dry air and is not beneficial to production safety, but also reduces the temperature of the dry air by the cold air, thereby indirectly influencing the moisture index of the coal dust. Meanwhile, the temperature in the mill is high, and part of coal blocks stored in the chute of the slag discharge port can be slowly combusted due to air sucked in gaps of the loose movable cover plate, so that large-cluster fire slag is finally formed, and the iron movable cover plate can be burnt and deformed seriously, thereby endangering the production safety.
In conclusion, it is important to develop a device which can prevent the generation of the fire slag and is beneficial to production.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in the slag discharge process of the traditional coal mill, fire slag is easy to generate;
in order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model relates to a timing automatic slag discharging device of a blast furnace coal injection coal mill, which comprises a coal mill, wherein the bottom of the side wall of the coal mill is provided with a slag discharging channel; the slag blocking plate is hinged with one end of the slag discharging channel and is suitable for covering an opening at the end part of the slag discharging channel; the output end of the cylinder is fixed with a connecting rod; the steel wire rope is connected with the connecting rod and the slag stopping plate; when the cylinder works, the slag stopping plate is driven to turn over through the connecting rod and the steel wire rope; the electromagnetic directional valve is controlled by the timer to be electrified or not and drives the rotation direction of the output end of the air cylinder; the air source of the electromagnetic directional valve is provided by a compressed air network;
in the scheme, the interval time of the timer is set, for example, 20 minutes, after 20 minutes, the electromagnetic directional valve is electrified, the air cylinder drives the connecting rod to rotate, the connecting rod drives the steel wire rope, the steel wire rope drives the slag baffle to rotate relative to the slag discharging port, and at the moment, hard impurity blocks can be discharged from the slag discharging port; after the slag discharging process lasts for several seconds, the timer enables the electromagnetic directional valve to be reversely electrified, and the air cylinder drives the connecting rod to reversely rotate, so that the slag blocking plate is closed.
In order to realize the adjustment of the rotation angle of the slag trap, the utility model adopts the technical proposal that the turning angle of the slag trap is controlled by adjusting the length of the steel wire rope;
when the turnover angle of the slag stopping plate is too small, the turnover angle of the slag stopping plate is increased by replacing the longer steel wire rope; otherwise, the same principle is applied.
In order to facilitate the rotation of the slag trap, the utility model discloses a steering force of cylinder is greater than the negative pressure of inhaling of coal pulverizer.
In the scheme, the timer can adopt the type MIC-N, the interval time is 0.5-45 minutes, and the discharge time is 0.5-10 seconds; the cylinder can be of the type RGT160, so that the steering force of the cylinder is larger than the negative suction pressure of the coal mill.
The utility model has the advantages that: the utility model relates to a regularly automatic sediment device of arranging of blast furnace coal injection coal pulverizer includes the coal pulverizer, realizes the interval just reverse rotation of cylinder through the cooperation of solenoid directional valve to through connecting rod, wire rope, make the shelves cinder notch opening part can the switching, the automatic of the hard piece of impurity of being convenient for is discharged, has prevented the appearance of the interior cinder of coal pulverizer, has ensured the stable production of blast furnace.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
in the figure: 1. the device comprises a coal mill, a 2. compressed air pipe network, a 3. timer, a 4. electromagnetic directional valve, a 5. cylinder, a 6. connecting rod, a 7. steel wire rope, a 8. slag trap, and a 9. slag discharge passage.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
The utility model relates to a timing automatic slag discharging device of a blast furnace coal injection coal mill, which comprises a coal mill 1, wherein the bottom of the side wall of the coal mill is provided with a slag discharging channel 9; the slag trap 8 is hinged with one end of the slag discharge passage 9 and is suitable for covering an opening at the end part of the slag discharge passage 9; the output end of the cylinder 5 is fixed with a connecting rod 6; the steel wire rope 7 is connected with the connecting rod 6 and the slag stopping plate 8; when the air cylinder 5 works, the slag stopping plate 8 is driven to turn over through the connecting rod 6 and the steel wire rope 7; the electromagnetic directional valve 4 is controlled by the timer 3 to be electrified or not and drives the output end of the air cylinder 5 to rotate; the air source of the electromagnetic directional valve 4 is provided by a compressed air network 2;
in the scheme, the interval time of the timer is set, for example, 20 minutes, after 20 minutes, the electromagnetic directional valve is electrified, the air cylinder drives the connecting rod to rotate, the connecting rod drives the steel wire rope, the steel wire rope drives the slag baffle to rotate relative to the slag discharging port, and at the moment, hard impurity blocks can be discharged from the slag discharging port; after the slag discharging process lasts for several seconds, the timer enables the electromagnetic directional valve to be reversely electrified, and the air cylinder drives the connecting rod to reversely rotate, so that the slag blocking plate is closed.
In order to realize the adjustment of the rotation angle of the slag trap, the utility model adopts the method that the turning angle of the slag trap 8 is controlled by adjusting the length of the steel wire rope 7;
when the turnover angle of the slag stopping plate is too small, the turnover angle of the slag stopping plate is increased by replacing the longer steel wire rope; otherwise, the same principle is applied.
In order to facilitate the rotation of the slag trap, the utility model discloses a steering force of the cylinder 5 is greater than the negative suction pressure of the coal pulverizer 1.
In the scheme, the timer can adopt the type MIC-N, the interval time is 0.5-45 minutes, and the discharge time is 0.5-10 seconds; the cylinder can be of the type RGT160, so that the steering force of the cylinder is larger than the negative suction pressure of the coal mill.
The utility model relates to a regularly automatic sediment device of arranging of blast furnace coal injection coal pulverizer includes the coal pulverizer, realizes the interval just reverse rotation of cylinder through the cooperation of solenoid directional valve to through connecting rod, wire rope, make the shelves cinder notch opening part can the switching, the automatic of the hard piece of impurity of being convenient for is discharged, has prevented the appearance of the interior cinder of coal pulverizer, has ensured the stable production of blast furnace.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. The utility model provides a regularly automatic sediment device of arranging of blast furnace coal injection coal pulverizer which characterized in that: comprises that
The bottom of the side wall of the coal mill is provided with a slag discharge channel;
the slag blocking plate is hinged with one end of the slag discharging channel and is suitable for covering an opening at the end part of the slag discharging channel;
the output end of the cylinder is fixed with a connecting rod;
the steel wire rope is connected with the connecting rod and the slag stopping plate;
when the cylinder works, the slag stopping plate is driven to turn over through the connecting rod and the steel wire rope;
the electromagnetic directional valve is controlled by a timer to be electrified or not and drives the output end of the air cylinder to rotate;
the air source of the electromagnetic directional valve is provided by a compressed air network.
2. The timed automatic slag discharge device of the blast furnace coal injection pulverizer as claimed in claim 1, wherein: and the turning angle of the slag stopping plate is controlled by adjusting the length of the steel wire rope.
3. The timed automatic slag discharge device of the blast furnace coal injection pulverizer as claimed in claim 1, wherein: the steering force of the cylinder is larger than the negative suction pressure of the coal mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021247609.6U CN212758918U (en) | 2020-06-30 | 2020-06-30 | Timing automatic slag discharging device of blast furnace coal injection coal mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021247609.6U CN212758918U (en) | 2020-06-30 | 2020-06-30 | Timing automatic slag discharging device of blast furnace coal injection coal mill |
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| CN212758918U true CN212758918U (en) | 2021-03-23 |
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| CN202021247609.6U Active CN212758918U (en) | 2020-06-30 | 2020-06-30 | Timing automatic slag discharging device of blast furnace coal injection coal mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113019583A (en) * | 2021-04-26 | 2021-06-25 | 唐县冀东水泥有限责任公司 | Pneumatic slag discharging door for slag discharging bin of coal vertical mill |
-
2020
- 2020-06-30 CN CN202021247609.6U patent/CN212758918U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113019583A (en) * | 2021-04-26 | 2021-06-25 | 唐县冀东水泥有限责任公司 | Pneumatic slag discharging door for slag discharging bin of coal vertical mill |
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