CN210602745U - Split multi-section type metallurgical rotary kiln - Google Patents
Split multi-section type metallurgical rotary kiln Download PDFInfo
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- CN210602745U CN210602745U CN201920871177.7U CN201920871177U CN210602745U CN 210602745 U CN210602745 U CN 210602745U CN 201920871177 U CN201920871177 U CN 201920871177U CN 210602745 U CN210602745 U CN 210602745U
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Abstract
The utility model relates to the field of machinary, especially, relate to a metallurgical rotary kiln of detachable multistage formula. The rotary kiln (2) comprises a plurality of sections which are respectively a sectional kiln body and are butted with each other through flanges. The diameters of the sectional kiln bodies are consistent or inconsistent. The sectional kiln bodies are made of steel and are made of consistent or inconsistent materials. The wall thickness of the sectional kiln body is consistent or inconsistent. The sectional kiln bodies are connected through flanges, each flange comprises a flange body (1), each flange body comprises a pin connecting hole and a bolt connecting hole, and the two butted flanges are matched through a cylindrical pin and a bolt; the pin connecting holes and the bolt connecting holes are arranged at intervals in a ring shape. The whole process from the shutdown to the recovery can be completed within 1 to 3 days, thereby greatly shortening the maintenance time and improving the production efficiency.
Description
Technical Field
The utility model relates to the field of machinary, especially, relate to a metallurgical rotary kiln of detachable multistage formula.
Background
The rotary kiln belongs to the prior art, is thermal equipment for heating and treating bulk or slurry materials, and is widely applied to industrial departments such as nonferrous metallurgy, ferrous metallurgy, refractory materials, cement, chemical engineering and the like. The cylinder is internally provided with a refractory brick lining and a heat exchange device which rotate at a low speed. The material and hot flue gas are generally subjected to countercurrent heat exchange, and the material is added from the high end of the kiln (also called the cold end or the tail end of the kiln). Because the cylinder is installed obliquely, when the kiln rotates, the materials in the kiln roll along the circumferential direction and move along the axial direction. The burner injects fuel at the low end (also called hot end or kiln head end), and the flue gas is discharged from the high end. The material is heated in the moving process and becomes qualified material through physical and chemical changes, and the qualified material is discharged from the low end.
Because the rotary kiln is heavy and needs to rotate, a plurality of problems are brought to design, manufacture, installation and maintenance. At present, most kilns are manufactured in sections, transported to the site and then welded and assembled into an integral kiln body. In the production and operation process, because the kiln lining close to the high-temperature section is easy to corrode, the defect that the kiln lining is welded into a whole kiln in the process of replacing the kiln lining can be shown. According to the past experience, if the rotary kiln is maintained once, more than 50 days are needed from the time of stopping the rotary kiln, cooling, removing the lining, pouring, baking the furnace to the time of recovering the production, a large amount of manpower and material resources are consumed, and the operation rate of the rotary kiln is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is that: in order to provide a split multi-section type metallurgical rotary kiln with better effect, the specific purpose is to see a plurality of substantial technical effects of the specific implementation part.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a separable multi-section metallurgical rotary kiln is characterized in that a rotary kiln 2 comprises a plurality of sections, the sections are respectively segmented kiln bodies, and the sections are butted through flanges; the rotary kiln further comprises a power system arranged below the rotary kiln, and the power system can simultaneously drive the multiple sectional kiln bodies to synchronously rotate.
The utility model discloses a further technical scheme lies in, the diameter of the segmentation kiln body unanimous or inconsistent.
The utility model discloses a further technical scheme lies in, the material of the segmentation kiln body unanimous or inconsistent, it is the steel.
The utility model discloses a further technical scheme lies in, the wall thickness of the segmentation kiln body unanimous or inconsistent.
The utility model has the further technical proposal that the sectional kiln bodies are connected by flanges, the flanges comprise flange bodies 1, the flange bodies comprise pin connecting holes and bolt connecting holes, and two butted flanges are matched by a cylindrical pin and a bolt; the pin connecting holes and the bolt connecting holes are arranged at intervals in a ring shape.
The utility model has the further technical proposal that the power system comprises a motor 11, and a speed reducer of the motor 11 is in power connection with a transmission gear 13; the gear transmission gear 13 is meshed with a driven gear 15, and the driven gear 15 is fixed on the shell of the sectional kiln body.
The utility model discloses a further technical scheme lies in, the riding wheel system contains the riding wheel of bottom to and be located the wheel on the segmentation kiln body and be riding wheel tyre 14, the kiln body can be held in riding wheel and the cooperation of riding wheel tyre 14.
The utility model discloses a further technical scheme lies in, still contains and keeps off wheel 10, keeps off wheel 10 for fixing the structure on the bottom surface, and it contains the rotatable outer lane of round, and this rotatable outer lane supports the side of driven gear 15 or riding wheel area 14, and when driven gear 15 or riding wheel area 14 rotated, it can prevent rotary kiln axial float.
Adopt above technical scheme the utility model discloses, for prior art have following beneficial effect: if the utility model is used, the whole kiln shutdown can be completed within 1-3 days to recover the production, thereby greatly shortening the maintenance time and improving the production efficiency.
Drawings
For further explanation of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings:
FIG. 1 is a schematic structural view of an embodiment;
FIG. 2 is a schematic structural view of a flange;
FIG. 3 is a schematic structural diagram according to a second embodiment;
FIG. 4 is a radial schematic view of a rotary kiln riding wheel;
wherein: 1. a flange body; 2. a rotary kiln; 3. a sectional kiln body; 4. a kiln head cover; 5. a burner; 6. a flame providing tab; 7. a riding wheel I; 8. a riding wheel seat; 9. a riding wheel II; the device comprises a gear wheel 10, a motor 11, a speed reducer 12, a transmission gear 13, a riding wheel belt 14 and a driven gear 15; 16. a cylindrical pin; 17. a connecting bolt; 18. and (3) a refractory material.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and embodiments, which are to be understood as illustrative only and not limiting the scope of the invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The patent provides a plurality of parallel schemes, and different expressions belong to an improved scheme based on a basic scheme or a parallel scheme. Each solution has its own unique features.
The first embodiment is as follows:
the utility model provides a metallurgical rotary kiln of detachable multistage formula which characterized in that, rotary kiln 2 contains a plurality of sections, and a plurality of sections are the segmentation kiln body respectively, and a plurality of sections are come through flange butt joint each other.
The utility model discloses a further technical scheme lies in, the diameter of the segmentation kiln body unanimous or inconsistent. It should be noted that the solution of this section is at least a hole plugging machine, which is an individual that can be sold independently, and the solutions of the lower sections are all parallel solutions or modified solutions.
The technical scheme of the invention has the following substantial technical effects and the realization process: the rotary kiln is divided into a plurality of sections by flanges, and the rotary kiln is divided into 2 sections and 3 sections or a plurality of sections. When needing to be replaced, the crawler crane with large tonnage can be adopted for dismounting. The connection mode of the flange is that pin connection and bolt connection are arranged in an annular mode at intervals, the bolts are mainly used for connecting the cylinder, and the cylindrical pins bear the rotating torsion of the cylinder. The kiln body is divided into sections with different diameters, and refractory material layers with different thicknesses and volume spaces can be adopted for the different diameters, so that the requirements of higher production processes are met. The pre-installed cylinder bodies can be subjected to balance pre-debugging on the ground by using a central roller carrier before installation. The balance of the installation of the cylinder body is ensured.
The power system can be arranged below the rotary kiln or at the side of the rotary kiln.
Example two: as a further improvement or a feasible parallel scheme, the sectional kiln bodies are made of consistent or inconsistent materials, and are all made of steel. The technical scheme of the invention has the following substantial technical effects and the realization process: meanwhile, the front of a welding kiln body is generally an equal-diameter kiln body, and although the sectional materials of the refractory material masonry are different, most of the refractory material masonry is the same material layer thickness. The service life of the refractory material of the high-temperature section cylinder close to the kiln head burner is often very short. If the utility model discloses the structure can be with the resistant material thickness thickening of high temperature section, the resistant material life-span of extension.
Firstly, a cylinder body of the rotary kiln is divided into a plurality of sections, and the sections are connected by flanges, so that the total weight of each section of the kiln body is controlled within the safe hoisting range of an on-site crawler crane. (more than 150 tons of large-tonnage crawler cranes can be rented domestically, and overseas projects are usually provided with crawler cranes during installation, so that the crawler cranes have no difficulty), when the lining needs to be replaced, a kiln section needing to be replaced can be prefabricated, and a ground debugging center support is adopted for dynamic and static balance testing and correction. Because the section of the kiln body which is replaced is well baked on the ground, the kiln body can be put into production soon after being hoisted. It is worth noting that when installing a new kiln body, the bolt must be firstly adjusted to be center, and then the pin must be installed.
The utility model designs that the diameter of each section of kiln body is correspondingly adjusted, taking the ferronickel smelting of a rotary kiln-a submerged arc furnace as an example. The rotary kiln is generally straight-tube type, and the phenomenon of insufficient pre-reduction of mineral aggregate occurs in the production process, so that more electric energy is consumed in the later smelting process of the electric furnace. The utility model discloses a kiln body is being close to kiln head section and has suitably increased the section of thick bamboo footpath, makes inside material increase in high temperature zone heated area and heated time, and the reduction is more abundant in advance, brings better economic benefits for whole smelting process.
In order to meet the installation requirement, when the barrel is prefabricated and replaced, the annular area which is 200mm close to the flange end is not treated temporarily, pouring materials are manufactured according to the design requirement at the rest section, and a small part of refractory bricks are built after the barrel is installed, so that the problem of refractory material connection at the joint is solved.
Has the advantages that: with the current whole rotary kiln contrast, the utility model discloses an effect as follows:
(1) for the sintering and kiln bonding of the materials at the high-temperature section or the burning loss of the refractory materials, only the kiln body at the high-temperature section needs to be replaced, the refractory materials of the spare kiln body can be made in advance, and the spare kiln body can be put into production only by replacing for 1 day at the fastest speed. The removed and replaced old kiln can be subjected to refractory material removal and masonry again in a warehouse to wait for next replacement. Compared with the prior rotary kiln refractory material which needs about 50 days for dismantling and building on a production line, the operation rate and the working efficiency are obviously increased.
(2) Different cylinder sections can adopt different cylinder diameters, different refractory material thicknesses can be selected when the refractory materials are built, the refractory materials can be saved, or the service life of the refractory materials of the kiln body can be prolonged;
(3) different cylinder sections adopt different diameters, if refractory materials with different inner diameters are built, the process volume change and the material running speed change in the kiln body can be caused, and for the metallurgical rotary kiln, the process optimization design can be carried out, so that the technical advantages of the metallurgical rotary kiln are further promoted. The wall thickness of the sectional kiln body is consistent or inconsistent.
Example three: as a further improved or feasible parallel scheme, the segmented kiln bodies are connected through flanges, each flange comprises a flange body (1), each flange body comprises a pin connecting hole and a bolt connecting hole, and the two butted flanges are matched through a cylindrical pin and a bolt; the pin connecting holes and the bolt connecting holes are arranged at intervals in a ring shape. The technical scheme of the invention has the following substantial technical effects and the realization process: the flange is not used for the prior flange, and the connecting mode that bolts and pins are arranged in a ring shape at intervals is shown in figure 2; the connection mode of the flange is that pin connection and bolt connection are arranged in an annular mode at intervals, the bolts are mainly used for connecting the cylinder, and the cylindrical pins bear the rotating torsion of the cylinder. The bolt and the cylindrical pin are arranged at intervals, so that even if torsional force occurs, the cylindrical pin can bear certain torsional stress, and the tightness of connection and the bolt are further protected. It should be noted that the solution of this section is at least a simple flange, which is an individual that can be sold independently, and the solutions of the lower sections are all parallel solutions or modified solutions. Preferably, the cylindrical pin and the pin connecting hole are in tight fit, and the bolt connecting hole are in clearance fit. The cylindrical pin is used for bearing the transverse force of the rotation of the whole kiln body, and the bolt is used for fastening each section of the sectional kiln body.
Creatively, the above effects exist independently, and the combination of the above results can be completed by a set of structure.
The technical effect that above structure realized realizes clearly, if do not consider additional technical scheme, this patent name can also be a rotary kiln. Some details are not shown in the figures.
It should be noted that the plurality of schemes provided in this patent include their own basic schemes, which are independent of each other and are not restricted to each other, but they may be combined with each other without conflict, so as to achieve a plurality of effects.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, all of which are intended to be covered by the appended claims.
Claims (8)
1. The split multi-section metallurgical rotary kiln is characterized in that the rotary kiln (2) comprises a plurality of sections, the sections are respectively segmented kiln bodies, and the sections are butted with each other through flanges; the rotary kiln further comprises a power system arranged below the rotary kiln, and the power system can simultaneously drive the multiple sectional kiln bodies to synchronously rotate.
2. The split multi-segment metallurgical rotary kiln of claim 1, wherein the diameters of the segmented kiln bodies are uniform or non-uniform.
3. The split multi-section metallurgical rotary kiln as claimed in claim 1, wherein the materials of the sections are consistent or inconsistent, and all are made of steel.
4. The split multi-segment metallurgical rotary kiln of claim 1, wherein the wall thickness of the segmented kiln body is uniform or non-uniform.
5. The split multi-section metallurgical rotary kiln according to claim 1, wherein the sectional kiln bodies are connected by flanges, the flanges comprise flange bodies (1), the flange bodies comprise pin connecting holes and bolt connecting holes, and the two butted flanges are matched by cylindrical pins and bolts; the pin connecting holes and the bolt connecting holes are arranged at intervals in a ring shape.
6. The split multi-section metallurgical rotary kiln as claimed in claim 1 or 5, wherein the power system comprises a motor (11), and a reducer of the motor (11) is in power connection with a transmission gear (13); the transmission gear (13) is meshed with a driven gear (15), and the driven gear (15) is fixed on the shell of the sectional kiln body.
7. A multi-sectional and separable rotary metallurgical kiln as claimed in claim 1, wherein the supporting roller system comprises a supporting roller at the bottom and a supporting roller belt (14) which is a wheel on the sectional kiln body, and the supporting roller belt (14) are matched to support the kiln body.
8. A multi-sectional and separable rotary kiln for metallurgy according to claim 1, further comprising a stop wheel (10), wherein the stop wheel (10) is a structure fixed on the bottom surface and comprises a circle of rotatable outer ring, the rotatable outer ring is abutted against the side surface of the driven gear (15) or the idler pulley belt (14), and the stop wheel can prevent the rotary kiln from moving axially when the driven gear (15) or the idler pulley belt (14) rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920871177.7U CN210602745U (en) | 2019-06-11 | 2019-06-11 | Split multi-section type metallurgical rotary kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920871177.7U CN210602745U (en) | 2019-06-11 | 2019-06-11 | Split multi-section type metallurgical rotary kiln |
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| CN210602745U true CN210602745U (en) | 2020-05-22 |
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| CN201920871177.7U Active CN210602745U (en) | 2019-06-11 | 2019-06-11 | Split multi-section type metallurgical rotary kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115724601A (en) * | 2022-12-27 | 2023-03-03 | 贺洪江 | Lime kiln capable of producing high-purity calcium oxide and carbon dioxide simultaneously |
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2019
- 2019-06-11 CN CN201920871177.7U patent/CN210602745U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115724601A (en) * | 2022-12-27 | 2023-03-03 | 贺洪江 | Lime kiln capable of producing high-purity calcium oxide and carbon dioxide simultaneously |
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