Transfer device capable of removing smoke dust from ladle transferred to converter
By designing a transfer device equipped with a dust collecting cover and a dust removal mechanism, the smoke and dust problem generated by the molten iron bag during the loading and unloading process is solved, and the dust removal process is achieved throughout the molten iron bag transfer process is reduced, and the dust overflow is improved and the dust removal efficiency is improved.
Patent Information
- Application Number
- CN202420580250.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-03-25
AI Technical Summary
The prior art is difficult to effectively solve the smoke and dust problem generated by molten iron bags during the loading and unloading of converters, especially when molten iron bags need to be quickly transferred to different locations, the dust removal effect is limited, and the water spray device does not have the effect of cooling.
A transfer device that can remove smoke and dust with a water-coat bag for rotation of the rotor is designed, including a van axle frame, a lifting mechanism and a moving mechanism, is equipped with a dust collecting cover and a dust collecting mechanism. The dust collecting cover is installed on the cross beam, and the dust collecting mechanism is arranged on the cross beam of the van, which can absorb dust at close range and move with the pollution source.
The entire dust removal process of the molten iron package transport process is achieved, reducing the overflow of smoke and dust, improving the dust removal efficiency, and ensuring maximum dust collection without affecting production.
Smart Images
Figure CN222770468U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of auxiliary equipment for steel plants, in particular to a transfer device capable of removing smoke and dust from a molten iron ladle for a converter. Background Art
[0002] The molten iron required for converter steelmaking is transported from the ironmaking plant to the steelmaking converter by train or car in a barrel container called a ladle or a ladle. Some ladles do not emit smoke because a covering agent is added to the surface of the molten iron and the molten iron itself carries a certain amount of slag. However, after the molten iron is loaded into the converter and becomes an empty ladle, the high-temperature molten iron inside will react with the oxygen in the air. Under the action of high-temperature convection, the ladle will continue to emit red smoke. The problem of molten iron ladle smoking. At present, most steel mills will configure a dust hood on the roof of the plant above the converter and connect it to the dust removal system for dust removal. However, the molten iron ladle cannot always stay in front of the converter. It must prepare the next batch of molten iron for the converter as soon as possible. However, the duration of smoking in the ladles is uncertain, and some of them even smoke for 5-10 minutes.
[0003] At present, most steel mills will install a water spray device at a suitable position above the converter mouth. After the iron is loaded, water is sprayed into the iron ladle to cool down the inside and suppress the smoke problem. However, if too much water is sprayed, the temperature of the iron ladle will be reduced, which will have an adverse effect on the smelting of the next furnace. If the water is sprayed too little, the smoke will basically continue after the water spraying stops. At the same time, there are the following problems:
[0004] 1. The dust removal on the roof of the plant above the converter is only a single point, and the molten iron preparation area is generally more than tens of meters away from the converter. The dust removal hood on the roof of the plant cannot extend all the way to the molten iron preparation area. Therefore, the dust removal on the roof of the plant can only collect and process the smoke during the iron loading process and the short-term smoke after the iron loading is completed.
[0005] 2. The effect of the water spray device on cooling the molten iron ladle is very limited. Most furnaces can only stop smoking for a short time after water spraying. The molten iron ladle will continue to smoke after tens of seconds to several minutes. Summary of the invention
[0006] The utility model provides a transfer device which can remove smoke and dust from a molten iron ladle during the transfer of a converter. The utility model can remove dust from the entire process of transferring the molten iron ladle and reduce the overflow of smoke and dust.
[0007] The utility model solves the above technical problems through the following technical solutions:
[0008] A transfer device capable of removing smoke and dust from a molten iron ladle used for converter transfer comprises a crane bridge, a lifting mechanism and a moving mechanism, wherein the moving mechanism is arranged on the crane bridge, and the lifting mechanism is arranged below the crane bridge. The moving mechanism adjusts the position of the lifting mechanism, and the lifting mechanism comprises two main hooks, a crossbeam and an auxiliary hook, wherein the auxiliary hook and the top of the crossbeam are both connected to the moving mechanism, the main hooks are arranged on both sides of the crossbeam, the main hooks hook the rotating shafts on both sides of the molten iron ladle, and the auxiliary hooks are hung on the tipping lifting points of the molten iron ladle, and a dust removal mechanism is arranged below the crossbeam, the dust removal mechanism comprises a dust collecting hood and the dust removal mechanism, and the dust collecting hood comprises a support bar and the dust collecting hood, the support bar is arranged on both sides of the crossbeam, the dust collecting hood is arranged on the support bar, and the air intake end of the dust removal mechanism is located below the dust collecting hood.
[0009] The above-mentioned transfer device that can use the hot metal ladle to remove smoke from the converter, one end of the support bar is connected to the crossbeam, and the other end extends to the edge of the converter, the dust hood includes two left-right symmetrical dust shields, a bobbin and a retractable motor, each dust shield includes a number of parallel telescopic plates, a retractable rope, a connecting rope and a connecting shaft, and the top of the connecting rope is fixedly connected to the crossbeam. The telescopic plates are overlapped in sequence, and connecting shafts are provided on both sides of the telescopic plates, and the two ends of the connecting shaft are respectively fixed to the connecting rope and the side walls of the telescopic plates; a through hole is provided in the middle of the telescopic plate, and the retractable rope passes through the through hole of the telescopic plate from top to bottom in sequence, and the two ends of the retractable rope are respectively connected to the bottom telescopic plate and the bobbin, the bobbin is fixed on the crossbeam above the dust hood, and the power end of the bobbin is connected to the driving shaft of the retractable motor; the two ends of the telescopic plate are movably connected to the support bar.
[0010] The above-mentioned transfer device that can use the molten iron ladle to remove smoke and dust from the converter is also provided with a fixing mechanism, which includes a slot and a block. The slot is arranged on the inner side of the support bar, and the end of the connecting shaft extends into the slot. The opening of the slot is larger at the top and smaller at the bottom. The block is arranged at the bottom of the connecting shaft, and the block is stuck in the slot.
[0011] The above-mentioned transfer device that can use the molten iron ladle to remove smoke and dust from the converter, the dust removal mechanism includes an air intake duct, a filter cartridge and an induced draft fan, the air intake duct is fixed under the crossbeam, the air intake duct is arranged between the two dust shields, the bottom side of the air intake duct is evenly distributed with air intake holes, the induced draft fan and the filter cartridge are arranged on the top of the dust collecting hood, the induced draft fan, the filter cartridge and the air outlet end of the air intake duct are connected in sequence, and the induced draft fan introduces the smoke and dust in the air intake duct into the filter cartridge for filtration.
[0012] The above-mentioned transfer device that can use the molten iron ladle to remove smoke and dust in the opposite converter, the retractable rope is a steel wire rope.
[0013] Compared with the prior art, the dust hood of the utility model is installed on the crossbeam, and the motor and dust removal mechanism are received and stored above the dust hood. The dust removal mechanism is directly arranged on the crossbeam of the overhead crane, which can absorb dust at a close distance, and can ensure maximum dust collection without affecting production as the pollution source moves. The structure is simple and conducive to mass production. After the iron loading is completed, the dust hood is opened, and the dust removal device is turned on by the overhead crane driver. If smoke is emitted, the dust removal mechanism is turned on until the smoke stops or the molten iron ladle reaches the position of the molten iron preparation area where the dust removal equipment is located. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model;
[0015] Figure 2 It is a schematic diagram of a partial structure of the utility model in a lateral direction;
[0016] Figure 3 1 is a schematic diagram of the lateral structure of the dust shield;
[0017] Figure 4 It is a schematic diagram of the main structure of the dust shield;
[0018] Figure 5 is a longitudinal section of the support bar;
[0019] The symbols in the accompanying drawings indicate: 1. overhead crane bridge, 2. main hook, 3. crossbeam, 31. support bar, 4. auxiliary hook, 5. dust hood, 6. bobbin, 7. retractable motor, 8. telescopic plate, 9. retracting rope, 10. connecting rope, 11. connecting shaft, 12. through hole, 13. slot, 14. block, 15. air intake duct, 16. filter cartridge, 17. induced draft fan. DETAILED DESCRIPTION
[0020] The following is a further detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the utility model.
[0021] like Figures 1 to 5The utility model includes a crane bridge 1, a lifting mechanism and a moving mechanism. The moving mechanism is arranged on the crane bridge 1, and the lifting mechanism is arranged below the crane bridge 1. The moving mechanism adjusts the position of the lifting mechanism. The lifting mechanism includes two main hooks 2, a beam 3 and an auxiliary hook 4. The auxiliary hook 4 and the top of the beam 3 are connected to the moving mechanism. The main hook 2 is arranged on both sides of the beam 3. The main hook 2 hooks the rotating shafts on both sides of the molten iron ladle, and the auxiliary hook 4 is hung on the tipping suspension point of the molten iron ladle. A dust removal mechanism is arranged below the beam 3. The dust removal mechanism includes a dust hood 5 and a dust removal mechanism. The dust hood includes a support bar 31 and a dust hood 5. The support bar 31 is arranged on both sides of the beam 3, and the dust hood 5 is arranged on the support bar 31. The air inlet end of the dust removal mechanism is located below the dust hood 5. When loading the converter, the main hook 2 is used to lift the gantry hook to lift the molten iron ladle to a suitable height, and then the auxiliary hook 4 is slowly lifted after being hung on the ladle's tipping lifting point, so that the molten iron flows out of the ladle mouth and enters the converter. Because there is a certain distance between the upper mouth of the molten iron ladle and the gantry hook crossbeam 3, the molten iron ladle will not touch the crossbeam 3 during the lifting process of the auxiliary hook 4. During the process of transporting the molten iron ladle back, the residual high-temperature molten iron inside the molten iron ladle will react with the air to produce smoke and dust that will enter the dust removal mechanism through the air intake end of the dust removal mechanism for treatment.
[0022] In order to prevent interference with the line of sight, one end of the support bar 31 is connected to the crossbeam 3, and the other end is inclined to extend toward the edge of the converter, which can cover the water outlet of the entire converter. The dust collecting hood 5 includes two left-right symmetrical dust shields, a bobbin 6 and a transceiver motor 7. Each dust shield includes a number of parallel telescopic plates 8, a retractable rope 9, a connecting rope 10 and a connecting shaft 11. The top of the connecting rope 10 is fixedly connected to the crossbeam 3. The telescopic plates 8 are overlapped in sequence, and connecting shafts 11 are provided on both sides of the telescopic plates 8. The two ends of the connecting shaft 11 are respectively fixed to the connecting rope 10 and the side walls of the telescopic plates 8; this ensures that after the telescopic plates 8 are opened, the relative positions between the telescopic plates 8 are fixed. A through hole 12 is provided in the middle of the telescopic plate 8. The retracting rope 9 passes through the through hole 12 of the telescopic plate 8 from top to bottom in sequence. The two ends of the retracting rope 9 are respectively connected to the telescopic plate 8 at the bottom layer and the bobbin 6. The bobbin 6 is fixed on the crossbeam 3 above the dust collecting cover 5. The power end of the bobbin 6 is connected to the driving shaft of the retracting motor 7. The two ends of the telescopic plate 8 are movably connected to the support bar 31. The retracting motor 7 drives the bobbin 6 to rotate forward, so that the bobbin 6 can retract the retracting rope 9, thereby achieving the purpose of retracting the overlapping telescopic plates 8. Since the telescopic plates 8 are overlapped in sequence, the retracting motor 7 is reversed, and the retracting plates can be spread out along the support rod in sequence under the action of gravity. In the process of iron transfer, the telescopic plate 8 is retracted to the vicinity of the crossbeam 3, leaving only the support bar. The support bar is thinner to avoid hindering the observation of the ground conditions by the crane driver. When molten iron is poured into the converter, the ladle stands upright, the motor operates to release the retractable rope 9, thereby spreading the telescopic plate 8 to form an open dust cover, and the dust removal mechanism operates to remove dust. Preferably, the retractable rope 9 is a steel wire rope, and the telescopic plate 8 is also made of high temperature resistant material.
[0023] In order to ensure that the telescopic plate 8 can stably reciprocate along the support bar 31, a fixing mechanism is also provided, which includes a slot 13 and a block 14. The slot 13 is arranged on the inner side of the support bar 31, and the end of the connecting shaft 11 extends into the slot 13. The opening of the slot 13 is large at the top and small at the bottom, and the opening is arranged to be large at the top and small at the bottom, which can prevent the retractable plate from being stuck when the top is gathered together. At the same time, as the telescopic plate 8 is gradually spread out, only the telescopic plate 8 at the lowest end reaches the bottom of the slot 13, which ensures that the slot 13 limits the block 14 on the telescopic plate 8 and prevents the telescopic plate 8 from falling out. Therefore, the block 14 is arranged at the bottom of the connecting shaft 11, and the block 14 is stuck in the slot 13.
[0024] The dust removal mechanism includes an air intake duct 15, a filter cartridge 16 and an induced draft fan 17. The air intake duct 15 is fixed below the crossbeam 3 and is disposed between the two dust shields. The bottom side of the air intake duct 15 is evenly distributed with air intake holes. The induced draft fan 17 and the filter cartridge 16 are disposed on the top of the dust collecting hood 5. The induced draft fan 17, the filter cartridge 16 and the air outlet end of the air intake duct 15 are connected in sequence. The induced draft fan 17 introduces the smoke and dust in the air intake duct 15 into the filter cartridge 16 for filtration. The smoke and dust overflow was checked. The induced draft fan 17 and the power line of the electric motor 7 are connected to the overhead crane to supply power to the device.
[0025] The working process is as follows: under normal conditions, the spool is retracted, the dust hood is in a retracted state, and the telescopic plate is retracted to the vicinity of the crossbeam to avoid blocking the view during the iron transfer process. The main hook lifts the molten iron ladle and transports the molten iron ladle to the vicinity of the converter. The auxiliary hook hooks the molten iron ladle and hangs it on the ladle tipping point. After pouring molten iron into the converter, the molten iron ladle stands upright, and the motor operates to release the retractable rope, thereby spreading the telescopic plate to form an open dust cover, and the dust removal mechanism operates to remove dust. Until the molten iron ladle returns to the dust removal position in the molten iron preparation area, the dust shield is retracted.
[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A transfer device capable of removing smoke and dust from a hot metal ladle for converter transfer, characterized in that: The invention comprises a crane bridge frame (1), a lifting mechanism and a moving mechanism, wherein the moving mechanism is arranged on the crane bridge frame (1), the lifting mechanism is arranged below the crane bridge frame (1), and the moving mechanism adjusts the position of the lifting mechanism. The lifting mechanism comprises two main hooks (2), a crossbeam (3) and an auxiliary hook (4), wherein the auxiliary hook (4) and the top of the crossbeam (3) are both connected to the moving mechanism, the main hooks (2) are arranged on both sides of the crossbeam (3), the main hooks (2) hook the rotating shafts on both sides of the iron ladle, and the auxiliary hooks (4) are hung on the tipping suspension points of the iron ladle, and a dust removal mechanism is arranged below the crossbeam (3), the dust removal mechanism comprises a dust collecting hood (5) and the dust removal mechanism, the dust collecting hood comprises a support bar (31) and the dust collecting hood (5), the support bar (31) is arranged on both sides of the crossbeam (3), the dust collecting hood (5) is arranged on the support bar (31), and the air inlet end of the dust removal mechanism is located below the dust collecting hood (5).
2. The transfer device for removing dust from a hot metal ladle for transfer to a converter as claimed in claim 1, characterized in that: One end of the support bar (31) is connected to the crossbeam (3), and the other end extends toward the edge of the converter. The dust collecting cover (5) comprises two left-right symmetrical dust shields, a bobbin (6) and a retractable discharge motor (7). Each dust shield comprises a plurality of parallelly arranged telescopic plates (8), a retractable rope (9), a connecting rope (10) and a connecting shaft (11). The top end of the connecting rope (10) is fixedly connected to the crossbeam (3). The telescopic plates (8) are overlapped in sequence. Both sides of the telescopic plates (8) are provided with a connecting shaft (11). Both ends of the connecting shaft (11) are connected to the retractable plates (8). The ends of the retractable plate (8) are respectively fixedly connected to the connecting rope (10) and the side wall of the retractable plate (8); a through hole (12) is provided in the middle of the retractable plate (8); the retractable rope (9) passes through the through hole (12) of the retractable plate (8) from top to bottom in sequence; the two ends of the retractable rope (9) are respectively connected to the bottommost retractable plate (8) and the bobbin (6); the bobbin (6) is fixed on the crossbeam (3) above the dust collecting cover (5); the power end of the bobbin (6) is connected to the driving shaft of the retractable motor (7); the two ends of the retractable plate (8) are movably connected to the support bar (31).
3. The transfer device for removing dust from a hot metal ladle for transfer to a converter as claimed in claim 2, characterized in that: A fixing mechanism is also provided, the fixing mechanism comprising a clamping groove (13) and a clamping block (14), the clamping groove (13) being provided on the inner side of the support bar (31), the end of the connecting shaft (11) extending into the clamping groove (13), the opening of the clamping groove (13) being larger at the top and smaller at the bottom, the clamping block (14) being provided at the bottom of the connecting shaft (11), and the clamping block (14) being clamped in the clamping groove (13).
4. The transfer device capable of removing smoke and dust from a hot metal ladle for transfer to a converter as claimed in claim 3, characterized in that: The dust removal mechanism comprises an air intake duct (15), a filter cartridge (16) and an induced draft fan (17); the air intake duct (15) is fixed below the crossbeam (3); the air intake duct (15) is arranged between the two dust shields; air intake holes are evenly distributed on the bottom side of the air intake duct (15); the induced draft fan (17) and the filter cartridge (16) are arranged on the top of the dust collecting hood (5); the induced draft fan (17), the filter cartridge (16) and the air outlet end of the air intake duct (15) are connected in sequence; the induced draft fan (17) introduces smoke and dust from the air intake duct (15) into the filter cartridge (16) for filtration.
5. The transfer device capable of removing smoke and dust from a hot metal ladle for transfer to a converter as claimed in claim 4, characterized in that: The retractable rope (9) is a steel wire rope.