CN110918959A - Ladle roaster - Google Patents
Ladle roaster Download PDFInfo
- Publication number
- CN110918959A CN110918959A CN201911277094.6A CN201911277094A CN110918959A CN 110918959 A CN110918959 A CN 110918959A CN 201911277094 A CN201911277094 A CN 201911277094A CN 110918959 A CN110918959 A CN 110918959A
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- CN
- China
- Prior art keywords
- ladle
- nozzle
- air
- gas
- adjusting screw
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
The invention discloses a ladle roaster with the structure, which cancels a rotary joint and uses a metal hose instead to connect an external gas pipeline, eliminates the potential safety hazard of gas leakage caused by frequent damage of the rotary joint, simultaneously cancels the original combustion-supporting fan, an induced draft fan and a heat accumulator by adding an insulating layer and adopting a specially designed burner, and heats air by using the residual heat of a ladle cover during roasting. Because the gas has certain pressure, the ladle cover air suction opening generates negative pressure under the action of gas pulling force, external air is automatically sucked into the ladle cover interlayer channel, and the external air and the gas are fully mixed and combusted in the burner after being preheated.
Description
Technical Field
The present invention relates to a device for baking a ladle.
Background
The ladle is generally baked by a baking device after being newly built and before being filled with molten steel. The ladle roaster currently used in steel plants is of a heat accumulating type structure, and a burner of the ladle roaster is of a sleeve type and consists of a hollow rotating shaft, a combustion-supporting fan, an induced draft fan, a reversing valve, a heat accumulator, a burner, a ladle cover and the like; the hollow rotating shaft is internally provided with a gas chamber and a combustion-supporting air bin, the middle of the hollow rotating shaft is separated by a blind plate, one end of the hollow rotating shaft is connected with a gas pipeline and a combustion-supporting air pipeline, and the other end of the hollow rotating shaft is connected with a heat accumulator. The heat accumulators are switched through the reversing valve, air is switched through the reversing valve, preheated by the heat accumulator B and then reaches the burner for combustion, meanwhile, sensible heat of high-temperature flue gas combusted in the ladle is stored through the heat accumulator A, waste flue gas is discharged through the reversing valve, the air is preheated by the heat accumulators, and the reversing valve is switched at a certain frequency to enable the two heat accumulators to be in a heat accumulation and heat release alternative working state.
The existing roaster has the following problems:
1. coal gas leakage often occurs at the joints of the induced draft fan and the rotating shaft, and potential safety hazards exist.
2. The switching valve is frequently damaged in a high-temperature area, and the service life of the heat accumulator is short.
3. The gas is easy to extinguish and lose fire when burning after the heat accumulator is out of work, and has complete hidden trouble.
4. The light heat-insulating material of the ladle cover is easy to fall off, the replacement is frequent, and the service life is short.
5. The gas and the combustion air are not fully mixed, the combustion efficiency is low, the baking time is long, and the gas consumption is high.
Disclosure of Invention
In view of this, the invention provides a ladle roaster, which has a long service life and a short roasting time.
In order to solve the technical problems, the technical scheme of the invention is as follows: a ladle roaster comprises a ladle cover and a burner arranged on the ladle cover, wherein the ladle cover is hollow, and the top of the ladle cover is provided with an air suction inlet; and the air inlet of the burner is positioned in the ladle cover and communicated with the air suction inlet.
As an improvement, a plurality of partition plates are arranged inside the bag cover, and the partition plates form an air channel to communicate the air suction inlet with the air inlet. The cavity in the inner part of the ladle cover is divided into a plurality of independent air channels by the partition plates, so that the air inlet efficiency is prevented from being influenced by each other to form turbulent flow.
As an improvement, the burner comprises a combustion pipe and a nozzle which is coaxial with the combustion pipe and is inserted in the combustion pipe; the nozzle is provided with a gas pipeline interface; the air inlet is arranged on the side wall of the combustion tube. The air inlet is positioned above the nozzle opening, so that the coal gas and the air can be fully mixed.
Preferably, the nozzle further comprises an adjusting device arranged at the mouth of the nozzle, the adjusting device comprises an adjusting screw rod axially arranged in the nozzle, the upper end of the adjusting screw rod penetrates through the nozzle, and the lower end of the adjusting screw rod extends out of the mouth of the nozzle; the top of the nozzle is provided with a threaded pipe, and the upper end of the adjusting screw is matched with the threaded pipe; and a conical adjusting platform is fixed at the lower end of the adjusting screw rod. The adjusting platform is used for adjusting the direction and the flow rate of the fuel gas, so that the fuel gas and the air can be fully mixed and can be adjusted according to actual conditions.
As an improvement, a hand wheel is arranged at the upper end of the adjusting screw rod. The screw rod is driven to rotate through the hand wheel so as to lift and simultaneously drive the adjusting platform.
Preferably, the adjusting table is in a shape of a cone with a small upper part and a big lower part.
Preferably, the inner top surface of the bag cover is coated with a heat insulation material. Used for heat preservation and avoiding heat loss.
Preferably, the number of the air suction openings is 4, and the number of the air inlet openings is also 4, so that the air inlet amount is increased.
Preferably, the top surface of the bag cover is provided with 4 positioning plates. Is connected with the rotating mechanism through a positioning plate.
Preferably, the positioning plate and the air suction opening are arranged at intervals.
The invention has the advantages that: the ladle roaster with the structure cancels the rotary joint and changes the rotary joint into a metal hose to connect an external gas pipeline, eliminates the potential safety hazard of gas leakage caused by frequent damage of the rotary joint, cancels the original combustion-supporting fan, the draught fan and the heat accumulator simultaneously by adding the heat preservation and adopting the specially designed burner, and heats the air by utilizing the residual heat of the ladle cover during roasting. Because the gas has certain pressure, the ladle cover air suction opening generates negative pressure under the action of gas pulling force, external air is automatically sucked into the ladle cover interlayer channel, and the external air and the gas are fully mixed and combusted in the burner after being preheated.
And (4) safety aspects: the unique burner structure solves the problem of fire-out and flameout, and the safety is greatly improved.
In terms of time: the baking time is saved by more than 40% (from normal temperature to required temperature).
Energy conservation: the new ladle saves 20.2 percent of converter gas (from normal temperature to required temperature) and saves 10KW of electric quantity of a combustion-supporting fan and an induced draft fan.
In the aspect of equipment: saving 2 sets of fan and motor spare parts and maintenance cost.
Temperature aspect: under the condition of the heat value (1310-1320 kcal/m 3) of the existing converter gas, the average temperature of the vertical new ladle after baking is improved by 81 ℃.
Drawings
Fig. 1 is a schematic view of the external structure of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
The labels in the figure are: the device comprises a ladle cover 1, a partition plate 2, a gas pipeline connector 3, a burner 4, a positioning plate 5, an air suction inlet 6, a combustion pipe 8, a nozzle 9, an air inlet 10, an adjusting table 11, an adjusting screw 12, a threaded pipe 13, a hand wheel 14 and a ladle 15.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.
As shown in fig. 1-2, the burner cap of the invention comprises a bag cap 1 and a burner 4 arranged on the bag cap 1, wherein the bag cap 1 is hollow, and the top of the bag cap is provided with an air suction opening 6; the inner top surface of the bag cover 1 is also coated with heat insulation materials. And an air inlet 10 of the burner 4 is positioned inside the ladle cover 1 and is communicated with an air suction opening 6. A plurality of partition plates 2 are arranged inside the bag cover 1, and the partition plates 2 form an air channel to communicate the air suction opening 6 with the air inlet 10.
The burner 4 comprises a combustion pipe 8 and a nozzle 9 which is coaxial with the combustion pipe 8 and is inserted in the combustion pipe 8; the nozzle 9 is provided with a gas pipeline connector 3; the air inlet 10 is arranged on the side wall of the combustion tube 8. Preferably, the air inlet 10 is located above the opening of the nozzle 9 to allow for thorough mixing of the gas and air. The nozzle is characterized by further comprising an adjusting device arranged at the mouth of the nozzle, wherein the adjusting device comprises an adjusting screw 12 axially arranged in the nozzle 9, the upper end of the adjusting screw 12 penetrates through the nozzle 9, and the lower end of the adjusting screw extends out of the mouth of the nozzle 9; the top of the nozzle 9 is provided with a threaded pipe 13, and the upper end of the adjusting screw 12 is matched with the threaded pipe 13; a conical adjusting platform 11 is fixed at the lower end of the adjusting screw 12. The adjusting table 11 is in a conical shape with a small top and a big bottom. The upper end of the adjusting screw 12 is provided with a hand wheel 14.
The number of the air suction openings 6 is 4, and the number of the air inlet openings 10 is 4, so that the air inlet amount is increased. The top surface of the ladle cover 1 is provided with 4 positioning plates 5. The positioning plate 5 and the air suction opening 6 are arranged at intervals.
When the gas stove works, the ladle cover 1 is connected to the rotating mechanism through the positioning plate 5, and the gas pipeline connector 3 is connected with a metal hose for supplying gas. Gas flow path: external gas → valve → gas pipe → metal hose → gas pipe interface 3 → burner 4. Air flow path: the outside air of the bag cover 1 → the air suction opening 6 → the air inlet 10 → the burner 4. After the gas is combusted, negative pressure is generated in the combustion tube 8 to suck air to provide power for the air.
Air is preheated inside the ladle cover 1, enters the combustion pipe 8, is mixed with fuel gas, and is then combusted inside the ladle 15 for heating the ladle.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (10)
1. The utility model provides a ladle roaster, includes the be built by contract and sets up the nozzle on the be built by contract, its characterized in that: the bag cover is hollow, and the top of the bag cover is provided with an air suction opening; and the air inlet of the burner is positioned in the ladle cover and communicated with the air suction inlet.
2. The ladle roaster as claimed in claim 1, wherein: a plurality of partition plates are arranged inside the bag cover, and the partition plates form an air channel to communicate the air suction inlet with the air inlet.
3. The ladle roaster as claimed in claim 1, wherein: the burner comprises a combustion pipe and a nozzle which is coaxial with the combustion pipe and is inserted in the combustion pipe; the nozzle is provided with a gas pipeline interface; the air inlet is arranged on the side wall of the combustion tube.
4. The ladle roaster as claimed in claim 3, wherein: the adjusting device comprises an adjusting screw rod axially arranged in the nozzle, the upper end of the adjusting screw rod penetrates through the nozzle, and the lower end of the adjusting screw rod extends out of the nozzle opening; the top of the nozzle is provided with a threaded pipe, and the upper end of the adjusting screw is matched with the threaded pipe; and a conical adjusting platform is fixed at the lower end of the adjusting screw rod.
5. The ladle roaster as claimed in claim 4, wherein: and a hand wheel is arranged at the upper end of the adjusting screw rod.
6. The ladle roaster as claimed in claim 4, wherein: the adjusting platform is in a conical shape with a small upper part and a big lower part.
7. The ladle roaster as claimed in claim 1, wherein: the inner top surface of the bag cover is coated with a heat insulation material.
8. The ladle roaster as claimed in claim 1, wherein: the number of the air suction openings is 4.
9. The ladle roaster as claimed in claim 8, wherein: the ladle cover top surface is provided with 4 locating plates.
10. The ladle roaster as claimed in claim 9, wherein: the positioning plate and the air suction opening are arranged at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911277094.6A CN110918959A (en) | 2019-12-12 | 2019-12-12 | Ladle roaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911277094.6A CN110918959A (en) | 2019-12-12 | 2019-12-12 | Ladle roaster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110918959A true CN110918959A (en) | 2020-03-27 |
Family
ID=69859412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911277094.6A Pending CN110918959A (en) | 2019-12-12 | 2019-12-12 | Ladle roaster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110918959A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030018823A (en) * | 2001-08-31 | 2003-03-06 | 주식회사 포스코 | Device for heating ladle uniformly |
| CN2747001Y (en) * | 2004-10-29 | 2005-12-21 | 宝山钢铁股份有限公司 | Burning nozzle for heating intermediate ladle |
| JP2009160640A (en) * | 2008-01-10 | 2009-07-23 | Chugai Ro Co Ltd | Ladle preheating device |
| CN107138722A (en) * | 2017-07-11 | 2017-09-08 | 襄阳远锐资源工程技术有限公司 | Turning barrel and system in a kind of lead casting heating and thermal insulation |
| CN107584105A (en) * | 2017-10-24 | 2018-01-16 | 天津理工大学 | Energy-saving premix internal combustion blast-furnace gas ladle baking facilities |
| CN109277556A (en) * | 2018-11-12 | 2019-01-29 | 四川德胜集团钒钛有限公司 | Dual-purpose baking of tundish device burner |
-
2019
- 2019-12-12 CN CN201911277094.6A patent/CN110918959A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030018823A (en) * | 2001-08-31 | 2003-03-06 | 주식회사 포스코 | Device for heating ladle uniformly |
| CN2747001Y (en) * | 2004-10-29 | 2005-12-21 | 宝山钢铁股份有限公司 | Burning nozzle for heating intermediate ladle |
| JP2009160640A (en) * | 2008-01-10 | 2009-07-23 | Chugai Ro Co Ltd | Ladle preheating device |
| CN107138722A (en) * | 2017-07-11 | 2017-09-08 | 襄阳远锐资源工程技术有限公司 | Turning barrel and system in a kind of lead casting heating and thermal insulation |
| CN107584105A (en) * | 2017-10-24 | 2018-01-16 | 天津理工大学 | Energy-saving premix internal combustion blast-furnace gas ladle baking facilities |
| CN109277556A (en) * | 2018-11-12 | 2019-01-29 | 四川德胜集团钒钛有限公司 | Dual-purpose baking of tundish device burner |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200327 |
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| RJ01 | Rejection of invention patent application after publication |