CN213680769U - Material spray gun replacing device for smelting reduction process - Google Patents
Material spray gun replacing device for smelting reduction process Download PDFInfo
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- CN213680769U CN213680769U CN202021213907.3U CN202021213907U CN213680769U CN 213680769 U CN213680769 U CN 213680769U CN 202021213907 U CN202021213907 U CN 202021213907U CN 213680769 U CN213680769 U CN 213680769U
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- spray gun
- material spray
- reduction process
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Abstract
The utility model provides a device is changed to melting reduction technology material spray gun, relate to melting spray gun and change apparatus technical field, including the fixed support that sets up of slope, the slide rail has been seted up on the support, parallel slidable mounting has first slide and second slide in the slide rail, first slide is located the top of second slide, first slide passes through the chain linkage with the second slide and sets up, and the portion that the linkage chain is located between first slide and the second slide is equipped with the section of drooping, first slide upwards when moving through the section of drooping lie in the second slide in advance. The utility model solves the problems that the prior art consumes time and labor due to the large volume of the melting spray gun, has high operation difficulty and is easy to cause potential safety hazards to operators; and the furnace body is required to be in a damping down state, and because the spray gun is slowly replaced, molten iron and molten slag in the furnace are solidified, so that the production is influenced by manually carrying out crushing and cleaning work after the furnace is cooled.
Description
Technical Field
The utility model relates to an apparatus technical field is changed to melting spray gun, concretely relates to device is changed to melting reduction technology material spray gun.
Background
The iron bath smelting reduction iron-smelting process is a smelting process in which non-coking coal is used as main energy source, iron ore powder and other material are used directly, and iron oxide is reduced into metal iron by carbon in high temperature smelting state. The method does not use coke, sinter and pellet, reduces the emission of CO2, NOx and dioxin, has the advantages of short process flow, high utilization efficiency of resources and energy, small environmental pollution and the like, has wide application prospect, and is a hotspot of iron-making industry research and a metallurgical leading-edge technology.
The raw materials such as iron ore powder, coal powder and lime used by the smelting reduction furnace are powdery materials, the required raw materials are transported in a gas conveying pipeline mode, the tail end of the conveying pipeline is connected with a material spray gun, and the raw materials required for smelting are blown into the furnace through the material spray gun. The material spray gun is inserted into high-temperature slag in the furnace and is eroded and washed by the high temperature of the slag for a long time, and the design service life of the common material spray gun is 1 year. The quick replacement is needed after the service life of the spray gun is over, the melting reduction furnace is in a blowing-down state in the process of replacing the spray gun, namely the furnace is in a blowing-out heat preservation state, the furnace still contains 300-plus-500 t high-temperature (above 1300 ℃) molten iron and molten slag, the longest blowing-down time is 12h, the temperature in the furnace is reduced along with the prolonging of the time, when the temperature is lower than 1200 ℃, the solidification risk exists, the molten iron and the molten slag in the furnace are solidified, and the continuous smelting cannot be carried out. After the liquid in the furnace is solidified, the liquid needs to be cooled to normal temperature and is crushed and cut by a crushing tool, so that great manpower and property loss is caused. Therefore, the damping down time needs to be reduced to the maximum extent, and the temperature in the furnace is ensured to be favorable for smooth recovery of smelting.
At present, when overhauing the smelting reduction smelting furnace, because do not have special spray gun to change and assist the utensil, the material spray gun change process can only be with the help of simple instruments such as manual work and manually go on, consuming time and wasting power, increase the cost of overhaul in the end.
The intellectual property office of China discloses a patent with application number 201320331790.2, and the scheme includes a gun body and a guide sleeve, wherein the guide sleeve is sleeved outside the gun body, a sealing ring is hermetically connected between the guide sleeve and the gun body, the right end of the guide sleeve is hermetically connected with an end cover, an eccentric end cover hole is formed in the end cover, the right end of the gun body is connected with a spray gun head, the outside of the spray gun head is hermetically connected with an eccentric sealing ring, and a positioning mechanism is connected on the eccentric sealing ring. The utility model discloses following beneficial effect has: the matched structure of the gun body and the guide sleeve ensures that the device is convenient to disassemble and maintain; the eccentric seal ring and the end cover are matched, so that when the gun body is pulled out of the guide sleeve, the outer end of the guide sleeve is of a closed structure, and gas in the tower is prevented from leaking.
However, the device gradually exposes the shortcomings of the technology along with the use, which mainly appears in the following aspects:
first, the device can realize supplementary dismantlement, but because the smelting is with the spray gun volume great for not only consuming time and wasting force under this mode to the operation degree of difficulty is big, easily causes the potential safety hazard to operating personnel.
Secondly, because change the spray gun and need the furnace body to be in the state of damping down, because the spray gun is changed slowly, the liquid temperature in the stove reduces, and molten iron and slag solidify, lead to smelting to interrupt, need the stove after cooling down, the manual work is broken the clearance, consumes 1 month at least, causes very big personnel to drop into and loss of property.
Thirdly, the device is mainly directed at the field of neutralizing water towers, and the field is obviously different from a smelting reduction process in aspects of working condition temperature, smelting conditions, external facility layout and the like, and is obviously different from a smelting reduction spray gun replacement process.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a device for replacing a melting reduction process material spray gun, which is used for solving the problems that the existing mode not only consumes time and labor, but also has great operation difficulty and easily causes potential safety hazards to operators because the volume of the spray gun for melting is larger in the traditional technology; and the furnace body is required to be in a damping down state, and because the spray gun is slowly replaced, molten iron and molten slag in the furnace are solidified, so that the production is influenced by manually carrying out crushing and cleaning work after the furnace is cooled.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a device is changed to melting reduction technology material spray gun, includes the fixed support that sets up of slope, the slide rail has been seted up on the support, slidable mounting has first slide and second slide side by side in the slide rail, first slide is located the top of second slide, first slide with the second slide passes through the chain linkage and sets up, just the chain is in first slide with the part between the second slide is equipped with the section of drooping, first slide during rebound through the section of drooping in advance in the second slide.
As an optimized scheme, the first sliding seat and the second sliding seat are respectively provided with a pulley matched with the sliding rail.
As an optimized scheme, the lower surfaces of the first sliding seat and the second sliding seat are fixedly connected with hanging plates, and hanging holes are formed in the hanging plates.
As an optimized scheme, the upper end part of the bracket is provided with a driving mechanism for driving the chain to move.
As an optimized solution, the driving mechanism comprises an electric hoist.
As an optimized scheme, the upper end and the lower end of the support are fixedly connected with connecting plates.
As an optimized scheme, the sliding rails and the outer wall of the furnace are arranged at an angle of 20-50 degrees.
As an optimized scheme, 2-16 supports are uniformly distributed along the center of the furnace body.
As an optimized scheme, the connecting plate of the bracket on the upper end part is fixedly connected to the supporting steel beam.
Preferably, the connecting plate of the bracket at the lower end is fixedly connected to the outer wall of the furnace.
Compared with the prior art, the beneficial effects of the utility model are that:
the material spray gun is quickly replaced in a damping-down state, the time for replacing the spray gun is obviously shortened, and the stable smelting production is ensured;
the quick change device is used for quickly changing the material spray gun, the time can be obviously shortened, and the problem that the SRV furnace cannot be restarted due to furnace condensation is avoided; and the yield can be improved by about 1000 tons in each replacement process, and the economic benefit is obviously improved.
The operation of personnel is more convenient and faster, the man-hour required by maintenance is reduced, and the safety of the operators is guaranteed.
The solidification furnace caused by the maintenance time process and the molten iron solidification can be effectively avoided, and the stable production is effectively ensured;
compared with the prior art that the operation can be completed within 24 hours, the key operation is completed mechanically, the replacement time can be shortened to 6-7 hours, the damping down time is reduced to the maximum extent, the furnace body cooling time is shortened, the molten iron and the molten slag are prevented from being solidified, and the SRV furnace can be restarted smoothly; the yield can be increased by about 1000 tons according to the current yield of 80 tons per hour; meanwhile, the condition that the spray gun falls off and injures operators and the like in the manual operation process is avoided, and the safety of the operators is guaranteed;
the stability in the working process is improved; the parts are few, the working procedure is simple and convenient, and the failure rate is low; the structure is simple, and the service life is long; simple and convenient operation and control, easy large-scale manufacture and installation and wide application range.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the top view of the present invention;
fig. 3 is a schematic structural view of the first slide carriage of the present invention;
fig. 4 is a schematic structural view of a second slide carriage according to the present invention;
in the figure: 1-a scaffold; 2-a first slide; 3-a second slide; 4-hanging a plate; 5-hanging holes; 6-electric hoist; 7-a chain; 8-the drooping section; 9-a connecting plate; 10-the outer wall of the furnace; 11-supporting a steel beam; 12-a spray gun; 13-hanging ring.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 to 4, the melting reduction process material spray gun replacing device comprises a support 1 which is obliquely and fixedly arranged, a slide rail is arranged on the support 1, a first slide seat 2 and a second slide seat 3 are slidably mounted in the slide rail in parallel, the first slide seat 2 is located above the second slide seat 3, the first slide seat 2 and the second slide seat 3 are arranged in a linkage mode through a chain 7, a portion, located between the first slide seat 2 and the second slide seat 3, of the chain 7 is provided with an extended section 8, and the first slide seat 2 moves upwards through the extended section 8 and then moves in front of the second slide seat 3.
The first sliding seat 2 and the second sliding seat 3 are respectively provided with a pulley matched with the sliding rail.
The first slide 2 and the second slide 3 are fixedly connected to the chain 7, wherein the fixing manner is common to those skilled in the art, and therefore not described herein.
The lower surfaces of the first sliding seat 2 and the second sliding seat 3 are fixedly connected with a hanging plate 4, and a hanging hole 5 is formed in the hanging plate 4.
The upper end of the bracket 1 is provided with a driving mechanism which drives the chain 7 to move.
The driving mechanism comprises an electric hoist 6, and the electric hoist is a 3T electric hoist and the like.
The support frame is further provided with an avoiding hole for avoiding the chain 7, so as to ensure that the electric block 6 drives the chain 7 to move, which is common to those skilled in the art, and therefore, the detailed description thereof is omitted.
The upper and lower ends of the bracket 1 are fixedly connected with connecting plates 9.
The slide rail and the outer wall of the furnace are arranged at an angle of 20-50 degrees. The angle-variable fixed assembly can be arranged, the middle of the angle-variable fixed assembly can be provided with a movable correcting device, and the structure of the movable correcting device belongs to daily common parts and does not belong to the innovation part of the scheme, so that the repeated description is omitted.
2-16 supports are uniformly distributed along the center of the furnace body.
The connecting plate 9 of the bracket 1 on the upper end is fixedly connected to the supporting steel beam 11.
The connecting plate 9 of the bracket 1 at the lower end part is fixedly connected on the outer wall 10 of the furnace.
Wherein the upper end of the spray gun 12 is provided with a hanging ring matched with the hanging ring, the lower end is provided with a fixed chain connected with the second slide carriage 3, and the lower end of the spray gun 12 is hooped by the fixed chain and fixed on the hanging hole 5 of the second slide carriage 3.
The use method of the device comprises the following steps:
the two ends of the bracket 1 can be fixed on the corresponding positions of the furnace wall and steel beams around the furnace wall by bolts through connecting plates 9, so that the whole device is positioned above the spray gun 12, is arranged in parallel with the spray gun 12 and has a vertical distance of 500 +/-380 mm from the spray gun 12. The replacement of the lance 12 includes two steps of extracting the lance 12 and reloading the lance 12, as follows:
the process of pulling out the lance 12;
in order to increase the replacement speed of the spray gun, the number of bolts or quick connection interfaces at each connection position is controlled to be 10-30 under the condition of ensuring sealing. When the spray gun 12 is pulled out, the bolts on the connecting flange of the mounting holes of the spray gun 12 and the connecting flange of the injection pipeline are all dismounted, and the hanging hole 5 on the first sliding seat 2 is connected with the hanging ring 13 at the upper end of the spray gun 12 through the chain 7 and the hook and is used as a corresponding support by a tool.
Starting the electric hoist 6 and other driving mechanisms, and driving the first sliding seat 2 to drive the spray gun 12 to move upwards in an inclined way under the traction of the chain 7, wherein the movement angle is controlled in a range of 20-50 degrees on the furnace wall. During the upward movement, the chain 7 is gradually tensioned, the drooping section 8 is eliminated, and the second slide carriage 3 starts to follow the upward movement; at the same time, the end of lance 12 will also be removed from the lance 12 mounting hole.
At this moment, the electric hoist 6 is halted, the lower end of the spray gun 12 is fixed on the hanging hole 5 of the second slide seat 3, the spray gun 12 is prevented from falling downwards when being separated from the mounting hole, then the electric hoist 6 is started, the whole spray gun 12 is pulled out of the mounting hole, and the electric hoist 6 is stopped.
Then hanging the hanging ring 13 at the upper end of the spray gun 12 on a lifting hook of a traveling crane with the height of more than 10T, then removing all connections between the replacing device and the spray gun 12, and using the traveling crane to lift the spray gun 12 to the ground or the upper surface of a transfer vehicle, thus completing the spray gun removing stage.
The spray gun 12 is hung to a replacement device by a traveling crane with more than 10T, the hanging hole 5 on the first slide seat 2 is connected with the hanging ring 13 at the upper end of the spray gun 12, the lower end of the spray gun 12 is fixed on the hanging hole 5 of the second slide seat 3, and the hanging ring 13 at the upper end of the spray gun 12 is taken down from the hanging hook of the traveling crane with more than 10T.
The electric block 6 is started, the chain 7 is gradually loosened, and the spray gun 12 moves downwards along with the first slide carriage 2 and the second slide carriage 3. After the lower end of the spray gun 12 enters the mounting hole of the spray gun 12, the electric hoist 6 is suspended, the lower end of the spray gun 12 is removed from being fixed with the second slide seat 3, the electric hoist 6 is started, the chain 7 is continuously loosened slowly, and the whole spray gun 12 slowly slides into the mounting hole of the spray gun 12 under the action of gravity.
After the spray gun 12 completely enters the mounting hole of the spray gun 12, the connecting mechanism of the spray gun 12 and the mounting hole of the spray gun 12 is aligned, and then the flange plate is fixedly connected through bolts. The spray gun 12 is connected with the injection pipeline of the connecting flange of the injection pipeline through steel, after the spray gun 12 is fixed on the mounting hole, the related linking mechanism is determined to be accurately aligned, the connecting flange between the spray gun 12 and the injection pipeline is in an alignment position, and the connecting flange is fixed through bolts or quick connectors after alignment. At this point, the gun 12 refill process is complete. Other structures in the above-mentioned apparatuses are common in the daily life, belong to the common general knowledge of those skilled in the art, and are not innovative in the present solution, so that the detailed structure is not described herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (10)
1. A melting reduction technology material spray gun changes device which characterized in that: including the fixed support (1) that sets up of slope, the slide rail has been seted up on support (1), slidable mounting has first slide (2) and second slide (3) side by side in the slide rail, first slide (2) are located the top of second slide (3), first slide (2) with second slide (3) set up through chain (7) linkage, just chain (7) are in first slide (2) with part between second slide (3) is equipped with linkage section (8), pass through during first slide (2) rebound hang section (8) in advance in second slide (3).
2. A smelt reduction process material spray gun changing apparatus according to claim 1, wherein: and pulleys matched with the sliding rails are respectively arranged on the first sliding seat (2) and the second sliding seat (3).
3. A smelt reduction process material spray gun changing apparatus according to claim 1, wherein: the lower surfaces of the first sliding seat (2) and the second sliding seat (3) are fixedly connected with a hanging plate (4), and the hanging hole (5) is formed in the hanging plate (4).
4. A smelt reduction process material spray gun changing apparatus according to claim 1, wherein: and the upper end part of the bracket (1) is provided with a driving mechanism for driving the chain (7) to move.
5. A smelt reduction process material spray gun changing device according to claim 4, characterized in that: the driving mechanism comprises an electric hoist (6).
6. A smelt reduction process material spray gun changing apparatus according to claim 1, wherein: and the upper end and the lower end of the bracket (1) are fixedly connected with connecting plates (9).
7. A smelt reduction process material spray gun changing apparatus according to claim 1, wherein: the slide rail and the outer wall of the furnace are arranged at an angle of 20-50 degrees.
8. A smelt reduction process material spray gun changing apparatus according to claim 1, wherein: 2-16 supports are uniformly distributed along the center of the furnace body.
9. A smelt reduction process material spray gun changing device according to claim 6, characterized in that: the connecting plate (9) of the bracket (1) at the upper end part is fixedly connected to the supporting steel beam (11).
10. A smelt reduction process material spray gun changing device according to claim 6, characterized in that: the connecting plate (9) of the support (1) at the lower end part is fixedly connected to the outer wall (10) of the furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021213907.3U CN213680769U (en) | 2020-06-28 | 2020-06-28 | Material spray gun replacing device for smelting reduction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021213907.3U CN213680769U (en) | 2020-06-28 | 2020-06-28 | Material spray gun replacing device for smelting reduction process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213680769U true CN213680769U (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021213907.3U Active CN213680769U (en) | 2020-06-28 | 2020-06-28 | Material spray gun replacing device for smelting reduction process |
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| CN (1) | CN213680769U (en) |
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- 2020-06-28 CN CN202021213907.3U patent/CN213680769U/en active Active
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| GR01 | Patent grant | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hebei Xinggang Technology Co.,Ltd. Assignor: SHANDONG MOLONG PETROLEUM MACHINERY Co.,Ltd. Contract record no.: X2023980034949 Denomination of utility model: A Melt Reduction Process Material Spray Gun Replacement Device Granted publication date: 20210713 License type: Common License Record date: 20230423 |