CN221099332U - Rotary hearth furnace ejection of compact spiral device - Google Patents
Rotary hearth furnace ejection of compact spiral device Download PDFInfo
- Publication number
- CN221099332U CN221099332U CN202322814036.0U CN202322814036U CN221099332U CN 221099332 U CN221099332 U CN 221099332U CN 202322814036 U CN202322814036 U CN 202322814036U CN 221099332 U CN221099332 U CN 221099332U
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- shaft
- hearth furnace
- rotary hearth
- screw
- discharging
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- 238000007599 discharging Methods 0.000 claims abstract description 62
- 239000000498 cooling water Substances 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 239000008188 pellet Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 abstract description 6
- 238000005728 strengthening Methods 0.000 abstract description 2
- 238000006722 reduction reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Furnace Charging Or Discharging (AREA)
Abstract
The utility model discloses a rotary hearth furnace discharging screw device. The rotary hearth furnace discharging screw device comprises a supporting bracket, a discharging screw shaft arranged on the upper portion of the supporting bracket, a plurality of screw blades arranged in the radial direction of the discharging screw shaft and connected with the discharging screw shaft together, a transmission shaft rotationally connected with one side of the discharging screw shaft, a motor electrically connected with the transmission shaft and a cooling water unit arranged in the discharging screw shaft and the screw blades. The rotary hearth furnace discharging screw device can rapidly discharge metallized pellets in the rotary hearth furnace, strengthen discharging screw cooling by improving the structure and strengthening cooling, improve the wear resistance of the discharging screw, prolong the service life of the discharging screw, improve the process efficiency of the rotary hearth furnace and reduce the production cost of the rotary hearth furnace.
Description
Technical Field
The utility model relates to the technical field of rotary hearth furnace processes, in particular to a rotary hearth furnace discharging spiral device.
Background
The rotary hearth furnace production process is a process for treating dust and mud generated in the steel production process and generating high-temperature reduction reaction in the furnace; or a process for treating dust and sludge generated in other industrial processes and generating high-temperature reduction reaction in a furnace; or a process for treating urban solid waste and a process for generating high-temperature reduction reaction in a furnace. The discharging screw is used for discharging in the rotary hearth furnace process and can also be used for other high-temperature discharging processes. In the rotary hearth furnace production process, the carbon-containing pellets added into the rotary hearth furnace are subjected to direct reduction reaction at high temperature in the rotary hearth furnace to generate metallized pellets, and the metallized pellets are added into the rotary hearth furnace process to be subjected to high-temperature direct reduction reaction to obtain the product with the metallization rate of 30-96%. And discharging the produced high-temperature metallized pellets out of the rotary hearth furnace body through a discharging screw device, entering a metallized pellet cooling device, and entering a storage bin for storage after cooling.
Because the discharging screw device is in the high-temperature environment of 1300 ℃ in the rotary hearth furnace and is continuously rubbed with the bottom of the rotary hearth furnace and the high-temperature metallized pellets, the discharging screw device is easy to generate the conditions of blade abrasion, blade fracture and the like under the high-temperature condition. The discharging screw device used for the current rotary hearth furnace is difficult to wear due to the limitation of the structure and the materials under the high temperature condition of the rotary hearth furnace, the service life of the discharging screw device cannot be prolonged through structural improvement under the condition of the current materials, the discharging screw device cannot withstand abrasion caused by friction with the bottom of the rotary hearth furnace and the high temperature metallized pellets for a long time under the high temperature condition, the service life of the discharging screw is short, the process efficiency of the rotary hearth furnace is seriously affected, and the production cost of the rotary hearth furnace is increased.
Disclosure of utility model
The utility model aims to provide a rotary hearth furnace discharging spiral device, which solves the technical problems that in the prior art, a rotary hearth furnace discharging spiral structure cannot withstand abrasion caused by friction with the bottom of the rotary hearth furnace and high-temperature metallized pellets for a long time, so that the service life of the discharging spiral is short, and can rapidly discharge metallized pellets in the rotary hearth furnace.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides a rotary hearth furnace ejection of compact screw means, includes the support frame, sets up the ejection of compact screw axis on support frame upper portion, set up ejection of compact screw axis radial direction and with a plurality of helical blade that ejection of compact screw axis links together, with the transmission shaft that ejection of compact screw axis one side rotated and is connected, with the motor that the transmission shaft is electric to be connected and set up ejection of compact screw axis with cooling water unit in the helical blade.
Further, the cooling water unit comprises a cooling water inlet arranged at one side of the discharging screw shaft and a cooling water outlet arranged at the other side of the discharging screw shaft.
Further, the discharge screw shaft is coupled with the screw blade by integral casting or welding or bolting.
Further, the discharging screw shaft and the screw blade are internally provided with a water flow pore canal for the cooling water unit to flow.
Further, the discharging screw shaft comprises a shaft body and screw shaft heads at two ends of the shaft body, the shaft body is placed on the bottom of the rotary hearth furnace, and the screw shaft heads are placed on the supporting brackets.
Further, the height of the supporting bracket is adjustable, and the contact part of the supporting bracket and the spiral shaft head is spiral.
Further, the transmission shaft is rotatably connected with the spiral shaft head, and the rotation shaft and the cooling water inlet are both positioned on the same side of the discharge spiral shaft.
By adopting the technical scheme, the utility model has the following advantages:
The utility model provides a rotary hearth furnace discharging screw device, which can timely and rapidly discharge metallized pellets in a rotary hearth furnace by improving the structure of the rotary hearth furnace discharging screw device, strengthen cooling of the discharging screw device by improving the structure and strengthening cooling, improve the wear resistance of the discharging screw device, prolong the service life of the discharging screw device, improve the process efficiency of the rotary hearth furnace, reduce the production cost of the rotary hearth furnace and improve the operation efficiency of the rotary hearth furnace.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings.
FIG. 1 is a schematic view of a structure in which a rotary hearth furnace discharge screw is placed on a rotary hearth furnace;
Fig. 2 is a schematic structural view of a cooling water unit in a rotary hearth furnace discharge screw.
Detailed Description
The detailed features and advantages of the present utility model will be readily apparent to those skilled in the art from the following detailed description, claims, and drawings that follow, taken in conjunction with the accompanying drawings.
Fig. 1 shows a schematic view of a structure in which a rotary hearth furnace discharge screw is placed on a rotary hearth furnace. The utility model provides a rotary hearth furnace ejection of compact screw means specifically is as shown in figure 1, includes support frame 3, sets up the ejection of compact screw shaft 2 in support frame 3 upper portion, sets up a plurality of helical blade 1 that the ejection of compact screw shaft 2 radially link together, and the transmission shaft 5 of rotating to be connected with ejection of compact screw shaft one side, motor 4 and the cooling water unit of setting in ejection of compact screw shaft 2 and helical blade 1 that are connected with the transmission shaft is electronic.
Wherein, discharge screw shaft 2 is placed on rotary hearth furnace stove bottom 9, helical blade 1 and rotary hearth furnace stove bottom 9 contact, discharge screw shaft 2 includes the spiral spindle nose 21 at axle body and axle body both ends, spiral support 3 supports the spiral spindle nose 21 of discharge screw shaft 2, axle body 21 is placed on rotary hearth furnace stove bottom 9, transmission shaft 5 and spiral spindle nose 21 rotate and are connected, discharge screw shaft 2 passes through motor 4 to provide power, drive discharge screw shaft 2 through transmission shaft 5 and rotate, helical blade 1 links together with discharge screw shaft 2, helical blade 1 and discharge screw shaft 2 can be through casting connection or welding or link together through the bolt, discharge screw shaft 2 is made with heat-resisting material, 1300 ℃ high temperature can be endured. The helical blade 1 is made of heat-resistant and wear-resistant materials, and can work for a long time under the high temperature condition of 1300 ℃. The spiral blade 1 is driven by the discharging spiral shaft 2 to rotate, enters the pellet cooler through a discharging chute of the rotary hearth furnace 9, and brings metallized pellets 10 on the bottom 9 of the rotary hearth furnace out of the rotary hearth furnace 9, so that the discharging purpose is achieved.
The support bracket 3 supports the spiral shaft heads 21 at two ends of the discharging spiral shaft 2, the contact part of the support bracket 3 and the spiral shaft heads 21 is spiral, and the bottoms of two sides of the support bracket 3 are provided with height adjusting structures for adjusting the height of the discharging spiral shaft 2, so that the shaft body of the discharging spiral shaft 2 just contacts with the bottom 9 of the rotary hearth furnace.
Fig. 2 shows a schematic structural view of a cooling water unit in a rotary hearth furnace discharge screw. The cooling water unit comprises a cooling water inlet 6 arranged on one side of the discharge screw shaft 2 and a cooling water outlet 7 arranged on the other side of the discharge screw shaft 2, and a certain cavity is formed between the discharge screw shaft 2 and the screw blade 1 as shown in figure 2, and a water flow channel 8 is formed in the discharge screw shaft 2 and the screw blade 1 for the cooling water unit to flow. Cooling water enters the discharging screw shaft 2 and the screw blades 1 from the cooling water inlet 6, and flows out from the cooling water outlet 7, so that the cooling water reduces the temperature of the discharging screw 2 and the temperature of the discharging screw blades 1, the wear resistance of the discharging screw blades 1 is improved, and the service life of the discharging screw 2 is prolonged.
In a specific embodiment, the discharging process of the rotary hearth furnace discharging screw device is as follows: the electric motor 4 is started to provide power, and the discharging screw shaft 2 is driven to rotate through the transmission shaft 5, so that the screw blade 1 is driven to rotate, and metallized pellets 10 on the bottom 9 of the rotary hearth furnace are taken out of the rotary hearth furnace in the rotating process, so that the discharging purpose is achieved. Cooling water enters the discharge screw shaft 2 and the discharge screw blade 1 from the cooling water inlet 6, and the cooling water flows out from the cooling water outlet 7 for recycling.
In another specific embodiment, the outfeed screw service conditions are as follows: when the discharge screw shaft 2 or the screw blade 1 needs to be maintained, the height of the discharge screw shaft 2 is raised by adjusting the height of the support bracket 3, and the discharge screw shaft 2 or the screw blade 1 is maintained.
Finally, it is pointed out that while the utility model has been described with reference to a specific embodiment thereof, it will be understood by those skilled in the art that the above embodiments are provided for illustration only and not as a definition of the limits of the utility model, and various equivalent changes or substitutions may be made without departing from the spirit of the utility model, therefore, all changes and modifications to the above embodiments shall fall within the scope of the appended claims.
Claims (4)
1. The rotary hearth furnace discharging screw device is characterized by comprising a supporting bracket, a discharging screw shaft arranged at the upper part of the supporting bracket, a plurality of screw blades arranged in the radial direction of the discharging screw shaft and connected with the discharging screw shaft, a transmission shaft rotationally connected with one side of the discharging screw shaft, a motor electrically connected with the transmission shaft and a cooling water unit arranged in the discharging screw shaft and the screw blades,
The cooling water unit comprises a cooling water inlet arranged at one side of the discharging screw shaft and a cooling water outlet arranged at the other side of the discharging screw shaft;
The discharging screw shaft is connected with the screw blade through integral casting or welding or bolt connection;
and the discharging screw shaft and the screw blades are internally provided with a water flow pore canal for the cooling water unit to flow.
2. The rotary hearth furnace discharging screw device according to claim 1, wherein the discharging screw shaft comprises a shaft body and screw shaft heads at two ends of the shaft body, the shaft body is placed on the bottom of the rotary hearth furnace, and the screw shaft heads are placed on the supporting bracket.
3. A rotary hearth furnace discharge screw apparatus according to claim 2, wherein the height of said support bracket is adjustable, and the portion of said support bracket in contact with said screw head is helical.
4. A rotary hearth furnace discharge screw apparatus as defined in claim 3 wherein said drive shaft is rotatably connected to said screw head, said drive shaft and said cooling water inlet being located on the same side of said discharge screw shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322814036.0U CN221099332U (en) | 2023-10-20 | 2023-10-20 | Rotary hearth furnace ejection of compact spiral device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322814036.0U CN221099332U (en) | 2023-10-20 | 2023-10-20 | Rotary hearth furnace ejection of compact spiral device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221099332U true CN221099332U (en) | 2024-06-07 |
Family
ID=91311817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322814036.0U Active CN221099332U (en) | 2023-10-20 | 2023-10-20 | Rotary hearth furnace ejection of compact spiral device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221099332U (en) |
-
2023
- 2023-10-20 CN CN202322814036.0U patent/CN221099332U/en active Active
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