CN220017420U - Air-coal mixing device for fuming furnace - Google Patents
Air-coal mixing device for fuming furnace Download PDFInfo
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- CN220017420U CN220017420U CN202321478199.XU CN202321478199U CN220017420U CN 220017420 U CN220017420 U CN 220017420U CN 202321478199 U CN202321478199 U CN 202321478199U CN 220017420 U CN220017420 U CN 220017420U
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- pipe section
- coal
- pipe
- fuming furnace
- furnace
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- 239000003245 coal Substances 0.000 title claims abstract description 57
- 238000009434 installation Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000008439 repair process Effects 0.000 abstract description 7
- 238000003466 welding Methods 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000008719 thickening Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model discloses a wind-coal mixing device for a fuming furnace, which belongs to the technical field of blast furnace equipment and comprises a first pipe section, a second pipe section, a third pipe section, reducing nozzles and outlet branch pipes, wherein a trapezoid groove is formed in the upper part of the first pipe section, the trapezoid groove is connected with a main coal pipe, the second pipe section and the third pipe section are connected with two ends of the first pipe section through flanges, the first pipe section, the second pipe section and the third pipe section are connected with a plurality of reducing nozzles, and the reducing nozzles are correspondingly connected with the outlet branch pipes. The device effectively prevents air leakage and coal leakage caused by abrasion of the through holes, greatly reduces the number of times of furnace shutdown repair welding, and improves the operation rate of the fuming furnace; the three-section structure of the primary mixing is adopted, the influence of the geographic position is less, the installation is more convenient, the overhaul operation efficiency is higher, the service life is effectively prolonged, the overhaul and maintenance cost of the air-coal mixing box for repair welding and replacement is reduced, and the clean production and safety of the fuming furnace are ensured.
Description
Technical Field
The utility model belongs to the technical field of blast furnace equipment, and particularly relates to a wind-coal mixing device for a fuming furnace.
Background
The air-coal mixing device is arranged on the primary air pipe of the fuming furnace and has the main function of uniformly mixing primary air and coal and then distributing the mixture to each branch pipe for feeding into the fuming furnace. The mixing box currently used is two-stage mixing, the two-stage mixing has little significance and increases windage loss of primary air and the leakage point is multiplied in the use process, and the newly installed air-coal mixing box can wear through holes, cause air leakage and coal leakage and have to be frequently shut down for welding repair after half a year of use. Frequent furnace shutdown causes low fuming furnace operation rate, leaked pulverized coal pollutes surrounding environment of a fuming furnace body, and hinders clean production of factories, so that certain potential safety hazards exist. The wind-coal mixing box needs to be replaced every year for large overhaul, and because the installation positions are close to the furnace bodies at two sides of the fuming furnace, circulating water pipes and jacks around the furnace bodies are staggered, the installation and the construction are inconvenient, and time and labor are wasted when the wind-coal mixing box is manufactured and replaced once.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides the wind-coal mixing device for the fuming furnace, which adopts primary mixing and is manufactured in three sections, the parts which are easy to wear are mainly thickened, and the devices are less affected by the geographical position by sectional manufacturing and installation, so that the device is more convenient to install and overhaul.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a wind coal mixing arrangement for fuming furnace, includes first pipe section, second pipe section, third pipe section, reducing nozzle, export branch pipe, and the dovetail groove has been seted up on first pipe section upper portion, is connected with main coal pipe through the dovetail groove, and second pipe section and third pipe section pass through the flange and are connected with first pipe section both ends, all be connected with a plurality of reducing nozzle on first pipe section, second pipe section, the third pipe section, the reducing nozzle corresponds to be connected with the export branch pipe.
Further, the inner diameters of the reducing nozzle and the outlet branch pipe of the first pipe section are smaller than those of the second pipe section and the third pipe section.
The utility model has the beneficial effects that:
the utility model provides a wind-coal mixing device for a fuming furnace, which is characterized in that a thickening treatment is carried out on the middle section which is easy to abrade, so that wind leakage and coal leakage caused by abrasion through holes can be effectively prevented, the number of times of furnace shutdown repair welding is greatly reduced, and the operation rate of the fuming furnace is improved; the device is for adopting the mixed syllogic structure of one-level, receives that geographical position's influence is less, the installation is more convenient, overhaul operating efficiency is higher, and the device is compared fuming furnace primary wind windage less, the installation is more convenient with former mixing box, and life obtains effectively promoting, and the maintenance cost of examining of welding repair and change wind coal mixing box reduces, and fuming furnace clean production and safety are ensured.
Drawings
FIG. 1 is a prior art schematic;
FIG. 2 is a schematic diagram of the structure of the present utility model;
FIG. 3 is a top view of the present utility model;
FIG. 4 is a cross-sectional view of a nozzle and outlet manifold of a first tube segment according to the present utility model;
FIG. 5 is a cross-sectional view of a second, third section nozzle and outlet manifold of the present utility model;
in fig. 1-5, 1-first tube section, 2-second tube section, 3-third tube section, 4-reducing nozzle, 5-outlet branch, 6-flange.
Detailed Description
In order to make the objects, technical solutions and advantageous effects of the present utility model more apparent, preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate understanding of the skilled person.
A wind-coal mixing device for a fuming furnace comprises a first pipe section 1, a second pipe section 2, a third pipe section 3, a reducing nozzle 4 and an outlet branch pipe 5. In consideration of the interface problem of the main coal pipe and the device, a trapezoid groove is reserved at the upper part of the first pipe section 1 serving as the middle section, when the wind-coal mixing box is installed, R345 and 16mm steel plates are used for four-side splicing and manufacturing of the trapezoid groove and then are connected with the main coal pipe, and the angles of the four plates are adjusted according to the relative positions of the main coal pipe and the mixing box so as to achieve the combination of the main coal pipe and the mixing box. Because the middle section is closer to the main coal pipe, the first pipe section 1 is most easy to wear, the lower side of the middle section is easy to wear, and ventilation and coal leakage are realized, and the first pipe section 1 is manufactured by adopting a seamless pipe with an inner lining and a wear-resistant alloy and a fluid wrapping outside. The second pipe section 2 and the third pipe section 3 are common material sections and are connected with the two ends of the first pipe section 1 through the flanges 6, and the sectional manufacturing and mounting have the advantages of being less influenced by geographical positions, being more convenient to mount and being higher in overhaul operation efficiency.
The first pipe section 1, the second pipe section 2 and the third pipe section 3 are respectively connected with a plurality of reducing nozzles 4, the reducing nozzles 4 are correspondingly connected with outlet branch pipes 5, and the outlet branch pipes 5 are connected with a coal inlet pipe of a coal injection device of the fuming furnace body to supply air-coal mixture to the coal injection device. The reducing nozzle 4 increases the blowing effect through reducing, thereby accelerating the conveying efficiency; in long-term application practice, the conventional air-coal mixing box outlet branch pipe 5 is too short, and a rubber pipe connecting the air-coal mixing box branch pipe and a coal inlet pipe of a fuming furnace body coal injection device is extremely easy to damage and leak, so that the air-coal mixing box outlet branch pipe 5 is lengthened, and the damage rate of the rubber pipe is effectively reduced
Because the first pipe section 1 is closer to the main coal pipe, in order to keep the air-coal mixture flow of each outlet branch pipe 5 as consistent as possible, the inner diameters of the reducing nozzle 4 and the outlet branch pipe 5 of the first pipe section 1 are smaller than those of the second pipe section 2 and the third pipe section 3 during manufacturing, and the outer diameters of the reducing nozzle 4 and the outlet branch pipe 5 of the second pipe section 2 and the third pipe section 3 are the same. The thickening treatment of the reducing nozzle 4 and the outlet branch pipe 5 of the first pipe section 1 can lead the wind and the coal to be uniformly distributed and simultaneously can effectively reduce the damage rate of the easy-abrasion section.
The working process of the utility model comprises the following steps:
after the high-pressure blower outputs primary air, the primary air and coal output in the Reed coal conveying system are converged in a main coal pipe, the main coal pipe is communicated with a mixing device, the air and the coal are sent into the mixing device to be mixed and then output from an outlet branch pipe 5, the outlet branch pipe 5 is connected with an inlet pipe of a coal injection device through a rubber pipe, the air-coal mixture is injected into the coal injection device, and finally the coal injection device injects the air-coal mixture into a fuming furnace.
The utility model provides a wind-coal mixing device for a fuming furnace, which is characterized in that a thickening treatment is carried out on the middle section which is easy to abrade, so that wind leakage and coal leakage caused by abrasion through holes can be effectively prevented, the number of times of furnace shutdown repair welding is greatly reduced, and the operation rate of the fuming furnace is improved; the device is for adopting the mixed syllogic structure of one-level, receives that geographical position's influence is less, the installation is more convenient, overhaul operating efficiency is higher, and the device is compared fuming furnace primary wind windage less, the installation is more convenient with former mixing box, and life obtains effectively promoting, and the maintenance cost of examining of welding repair and change wind coal mixing box reduces, and fuming furnace clean production and safety are ensured.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the utility model, and that, although the utility model has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the utility model as defined by the appended claims.
Claims (2)
1. A wind coal mixing arrangement for fuming furnace, its characterized in that: the coal pipe comprises a first pipe section, a second pipe section, a third pipe section, reducing nozzles and outlet branch pipes, wherein a trapezoid groove is formed in the upper portion of the first pipe section, the trapezoid groove is connected with a main coal pipe, the second pipe section and the third pipe section are connected with two ends of the first pipe section through flanges, the first pipe section, the second pipe section and the third pipe section are all connected with a plurality of reducing nozzles, and the reducing nozzles are correspondingly connected with the outlet branch pipes.
2. A wind-coal mixing device for a fuming furnace as recited in claim 1, wherein: the inner diameters of the reducing nozzle and the outlet branch pipe of the first pipe section are smaller than those of the second pipe section and the third pipe section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321478199.XU CN220017420U (en) | 2023-06-12 | 2023-06-12 | Air-coal mixing device for fuming furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321478199.XU CN220017420U (en) | 2023-06-12 | 2023-06-12 | Air-coal mixing device for fuming furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220017420U true CN220017420U (en) | 2023-11-14 |
Family
ID=88676768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321478199.XU Active CN220017420U (en) | 2023-06-12 | 2023-06-12 | Air-coal mixing device for fuming furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220017420U (en) |
-
2023
- 2023-06-12 CN CN202321478199.XU patent/CN220017420U/en active Active
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