A telescopic molten iron slag scraper

Abstract

The present application discloses a telescopic molten iron slag scraper, wherein a protective outer sleeve belt is provided on the outer side of an extended cantilever, and the protective outer sleeve belt is pulled to move by a driving turntable, so that only the slag scraping rod on the outer side of the protective outer sleeve belt is inserted into the molten iron ladle and performs the slag scraping work. Since the protective outer sleeve belt is continuously moved by the rotation of the driving turntable, the slag scraping rod can continuously scrape various parts of the molten iron ladle, so that a large amount of waste slag on the surface of the molten iron ladle is scraped out. At the same time, the slag scraping rod is arranged in a V shape on the surface of the protective outer sleeve belt, so that the slag scraping rod can filter the waste slag when scraping the waste slag, so that the slag scraping rod only scrapes the waste slag, and the waste slag is continuously turned outward by the slag scraping rod as the protective outer sleeve belt rotates, thereby reducing the phenomenon of waste slag escaping on both sides due to excessive accumulation, and achieving the effects of local continuous slag scraping, filtering and turning and scraping out the waste slag.

Description

Technical Field

[0001] The present application relates to the technical field of metallurgical slag treatment, and in particular to a telescopic molten iron slag skimmer. Background Art

[0002] In steel production, the molten iron treatment process removes waste slag rich in harmful components on the surface to reduce the harmful components in the molten iron, thereby improving the quality of steel.

[0003] The slag scraping equipment currently used is mainly based on a slag scraping plate provided on a telescopic arm, so that the slag scraping plate can scrape out the waste slag on the surface of the molten iron ladle through the movement of the telescopic component. However, in actual use, if the slag scraping plate is inserted too deep into the slag liquid surface, not only will both the slag and molten iron be scraped out, thereby increasing the loss of molten iron, but also because the slag scraping plate is inserted too deep into the molten iron, the high temperature will increase the erosion of the molten iron on the slag scraping plate; if it is inserted too shallowly into the slag liquid surface, the number of slag scraping times will increase.

[0004] At the same time, due to the flat design of the slag plate, the slag on the surface of the ladle will move toward the outlet when it is scraped by the slag plate. However, when too much slag accumulates on the surface of the slag plate, the slag will flow out from both sides of the slag plate, resulting in the slag removal efficiency of the slag plate being reduced due to the increase in the amount of escaping slag when the slag plate is actually working. Summary of the Invention

[0005] The present application proposes a telescopic molten iron slag skimmer, which has the advantages of local continuous slag skimming, filtering and waste slag turning and skimming out, and is used to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, this application adopts the following technical solutions:

[0007] A migration support, on one side of the surface of which a power distribution and control system and a rotating assembly are fixedly mounted;

[0008] A main beam, the main beam is fixedly mounted on the top of the rotating assembly via a rotating shaft seat, the end of the main beam is hingedly connected to the hydraulic rod of the lifting hydraulic cylinder, and the cylinder seat of the lifting hydraulic cylinder is fixedly arranged;

[0009] An extended cantilever, one end of which is slidably sleeved in the main beam and rests against an ejector spring sleeved therein, the other end of which is exposed from the main beam and is provided with a protective outer sleeve belt on the outside, one end of which is fixedly mounted to the head end face of the main beam and the other end is slidably connected to the side wall of the main beam, and a slag scraper rod is threadedly connected to the outside of the protective outer sleeve belt;

[0010] A driving motor is fixedly mounted on one side of the bottom of the main beam, and a driving turntable is fixedly mounted on the output shaft of the driving motor, a groove is provided on the outer side of the driving turntable, and the groove matches the slag scraping rod. The driving motor drives the driving turntable to rotate, and through the cooperation between the groove on the outer side and the slag scraping rod, the protective outer sleeve is pulled, the extended cantilever is pushed and pulled, and with the cooperation of the ejection spring, the slag scraping rod flips the waste slag outward and pulls the waste slag out at the same time.

[0011] In a specific embodiment of the present invention, the elongated cantilever includes two sections that are bent and connected to each other, and the angle between the two sections is between ninety and one hundred and eighty degrees.

[0012] In a specific embodiment of the present invention, the end section of the extended cantilever is arc-shaped.

[0013] In a specific embodiment of the present invention, the radius of the arc is four to six times the thickness of the extended cantilever.

[0014] In a specific embodiment of the present invention, the side wall of the extended cantilever is provided with a guide groove, which is used to limit the protective outer sleeve belt. An anti-slip wheel is fixedly installed on the inner side of the extended cantilever, and the side wall of the anti-slip wheel is rollingly connected to the outer side of the protective outer sleeve belt.

[0015] In a specific embodiment of the present invention, an air exchange passage is opened at one end of the main beam, and the air exchange passage is communicated with the inner cavity of the main beam.

[0016] In a specific embodiment of the present invention, there are multiple groups of slag scraper bars, and the multiple groups of slag scraper bars are arranged at equal distances. The number of slag scraper bars in any group is three to six, and they are arranged in a V shape.

[0017] In a specific embodiment of the present invention, the height of the scraper bar with the V-shaped tip in the middle of a group is two to four times the height of the scraper bars on both sides, and the highest scraper bar fits in the groove on the outer side of the driving turntable.

[0018] In a specific embodiment of the present invention, a plug ball is movably provided in the ventilation duct, an L-shaped groove for placing the plug ball is provided at one end of the main beam, and a ventilation hole located above the ventilation duct is opened at the end of the main beam.

[0019] In a specific embodiment of the present invention, a pneumatic horn communicating with the ventilation duct is fixedly mounted on one end of the main beam, and the pneumatic horn makes a sound when external airflow enters the main beam through the ventilation duct.

[0020] The present application provides a telescopic molten iron slag scraper, which is provided with a protective outer sleeve belt on the outer side of the extended cantilever, and the protective outer sleeve belt is pulled to move by a driving turntable, so that only the slag scraping rod on the outer side of the protective outer sleeve belt is inserted into the molten iron ladle and performs the slag scraping work. Since the protective outer sleeve belt is continuously moved by the rotation of the driving turntable, the slag scraping rod can continuously scrape various parts of the molten iron ladle, so that a large amount of waste slag on the surface of the molten iron ladle is scraped out. At the same time, the slag scraping rod is arranged in a V shape on the surface of the protective outer sleeve belt, so that the slag scraping rod can filter the waste slag when scraping the waste slag, so that it only scrapes the waste slag, and the slag scraping rod continuously flips the waste slag outward as the protective outer sleeve belt rotates, reducing the phenomenon of waste slag escaping on both sides due to excessive accumulation, and achieving the effects of local continuous slag scraping, filtering and flipping and scraping out the waste slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments disclosed herein and, together with the description, serve to explain the principles disclosed herein.

[0022] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0023] Figure 1 It is a three-dimensional diagram of the overall appearance;

[0024] Figure 2 It is the overall top view;

[0025] Figure 3 The main beam and its internal cross-sectional view;

[0026] Figure 4 This is a three-dimensional view of the bottom of the main beam.

[0027] In the figure: 1. Migration support; 2. Power distribution and control system; 3. Rotating assembly; 4. Lifting hydraulic cylinder; 5. Pneumatic horn; 6. Main beam; 600, ventilation hole; 601, ventilation duct; 7. Rotating shaft seat; 8. Driving turntable; 9. Driving motor; 10. Extended cantilever; 11. Slag scraper rod; 12. Anti-slip wheel; 13. Protective outer cover belt; 14. Ejection spring; 15. Ball. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] Example 1

[0030] See also Figure 1-Figure 3 , a power distribution and control system 2 is fixedly installed on one side of the surface of the migration support 1, so that the subsequent control work can be carried out normally through the control of the power distribution and control system 2, and a rotating component 3 located on one side of the power distribution and control system 2 is fixedly installed on the surface of the migration support 1, and the rotating component 3 can be rotated under the control of the power distribution and control system 2, and then a rotating shaft seat 7 is fixedly installed on the top of the rotating component 3, and a main beam 6 is fixedly installed on the top of the rotating shaft seat 7, and the rotating shaft seat 7 is located on the middle side of the main beam 6, and a lifting hydraulic cylinder 4 is movably installed on the side wall of the rotating component 3, and one end of the lifting hydraulic cylinder 4 is movably installed with one end of the main beam 6, so as to ensure that when the main beam 6 needs to move, the rotating component 3 is controlled by the power distribution and control system 2 to rotate, so that the rotating component 3 drives the rotating shaft seat 7 and the lifting hydraulic cylinder 4 to rotate synchronously, so that the main beam 6 rotates with the rotating component 3 as the center, and the lifting hydraulic cylinder 4 is controlled by the power distribution and control system 2 to realize the up and down deflection of the main beam 6 with the rotating shaft seat 7 as the rotation point.

[0031] In this embodiment, an extension cantilever 10 is movably installed at one end of the main beam 6, and the shape of the extension cantilever 10 is L-shaped, that is, the extension cantilever 10 includes two sections connected by bending, and the inner angle of the extension cantilever 10 is between ninety and one hundred and eighty degrees. The extension cantilever 10 can be unidirectionally movable in the main beam 6, and an ejection spring 14 is movably installed on the inner wall of the main beam 6, and one end of the ejection spring 14 is fixedly installed with the extension cantilever 10, so that the ejection of the extension cantilever 10 is achieved by the elastic force of the ejection spring 14, and a protective outer sleeve 13 is movably installed on the outer side of the extension cantilever 10, and one end of the protective outer sleeve 13 is fixedly installed with one end of the main beam 6, and the other end of the protective outer sleeve 13 is movably set with the side wall of the main beam 6, so as to achieve the protection of the protective outer sleeve 13. 3 surrounds the outer side of the extended cantilever 10, and a slag scraping rod 11 is threadedly connected to the outer side of the protective outer sleeve 13. At the same time, a driving motor 9 is fixedly installed on one side of the bottom of the main beam 6, and a driving turntable 8 is fixedly installed on the output shaft of the driving motor 9. A groove is provided on the outer side of the driving turntable 8. According to the rotation of the driving turntable 8, the groove on the outer side of the driving turntable 8 is fitted with the slag scraping rod 11, so that the protective outer sleeve 13 is pulled by the slag scraping rod 11 to prompt the extended cantilever 10 to move inward to suppress the ejection spring 14, so as to ensure that in actual use, the power distribution and control system 2 controls the rotating assembly 3 and the lifting hydraulic cylinder 4, so that the slag scraping rod 11 at the end of the extended cantilever 10 is inserted into the waste slag on the surface of the molten iron ladle, and the end of the extended cantilever 10 will not be immersed in the slag scraping rod 11. In the molten iron ladle, then, the driving motor 9 is controlled to rotate by the power distribution and control system 2, so that the driving turntable 8 drives the slag scraping rod 11 to move toward the direction of the main beam 6 when it rotates, and the slag scraping rod 11 pulls the protective outer sleeve 13 toward the side wall of the main beam 6, and realizes the collection of the protective outer sleeve 13 through the avoidance groove provided on the side wall of the main beam 6. This avoidance groove is preferably a T-shaped groove, so that the avoidance groove can position and limit the two sides of the protective outer sleeve 13, and at the same time avoid the slag scraping rod 11 on the protective outer sleeve 13. When the driving turntable 8 drives the protective outer sleeve 13 to move toward the main beam 6, the extended cantilever 10 moves toward the direction of the main beam 6, which will squeeze the ejection spring 14 in the main beam 6, so that the extended cantilever 10 has the effect of scraping the waste slag on the surface of the molten iron ladle outward. On the other hand, since the slag scraping rod 11 is continuously rotated following the protective outer belt 13, the slag scraping rod 11 is driven to scrape the surface of the molten iron ladle, thereby scraping off the slag on the surface of the molten iron ladle, and continuously scraping the slag on the surface of the molten iron ladle, even if the slag scraping rod 11 is not completely inserted into the slag surface of the molten iron ladle, after the slag scraping rod 11 scrapes out part of the slag on the surface of the molten iron ladle, the remaining slag will float to the surface again, and the rear slag scraping rod 11 will scrape the floated slag again, thereby reducing the residual slag when scraping the slag multiple times, thereby reducing the number of times the slag is scraped off.This prevents the scraper bar 11 from being in continuous contact with the waste slag, thus preventing the components from being in contact with the waste slag for a long time, thereby preventing high temperature erosion.

[0032] Combine Figure 3 and Figure 4 In order to ensure that the protective outer belt 13 can be tightly attached to the outer side of the extended cantilever 10, a guide groove for limiting the protective outer belt 13 is provided through the side wall of the extended cantilever 10, and an anti-slip wheel 12 is fixedly installed on the inner side of the extended cantilever 10, and the side wall of the anti-slip wheel 12 is rollingly connected to the outer side of the protective outer belt 13, so that the anti-slip wheel 12 can reverse the direction of the protective outer belt 13, ensuring that the protective outer belt 13 is tightly attached to the outer side of the extended cantilever 10 while also facilitating the protective outer belt 13 to the side wall of the main beam 6, thereby ensuring the stability of the working of the protective outer belt 13.

[0033] In the present application, the protective outer sleeve 13 is made of a high-temperature-resistant and bendable metal material, thereby ensuring that the protective outer sleeve 13 can still work stably under high-temperature working conditions.

[0034] Combine Figure 1 and Figure 2 In order to ensure further scraping of the waste slag in the molten iron ladle and reduce the phenomenon of waste slag escaping, multiple groups of slag scraping rods 11 are set on the outside of the protective outer sleeve 13, and the multiple groups of slag scraping rods 11 are arranged at equal distances, and the number of slag scraping rods 11 in a group can be three to six, for example, five slag scraping rods 11 are arranged in a V shape, so as to ensure that the slag scraping rods 11 filter the waste slag at the same time during the scraping process, so that the slag scraping rods 11 only scrape the waste slag, and at the same time, the scraping of the slag scraping rods 11 will cause the waste slag to gather in the middle of the protective outer sleeve 13, and as the slag scraping rods 11 continue to move with the protective outer sleeve 13, the slag scraping rods 11 continuously scrape the waste slag outward in the direction of the migration support 1, and as multiple groups of slag scraping rods 11 flip the waste slag outward, the phenomenon of waste slag escaping from both sides due to excessive accumulation is reduced.

[0035] In order to ensure that the extension cantilever 10 is in the main beam 6 and avoids the influence of the airflow compression in the main beam 6 on the movement of the extension cantilever 10, refer to Figure 2 and Figure 3 By opening an air exchange passage 601 at one end of the main beam 6 and communicating with the inner cavity of the main beam 6, it is ensured that during the extension and retraction of the extended cantilever 10, the air flow in the inner cavity of the main beam 6 is sucked in and discharged through the air exchange passage 601, thereby reducing the resistance generated during the movement of the extended cantilever 10.

[0036] In order to avoid the phenomenon that the slag scraping rod 11 does not move the local slag too many times due to the arc of the end of the extended cantilever 10 being too short, resulting in incomplete slag scraping, the arc radius of the end of the extended cantilever 10 is set to four to six times the thickness of the extended cantilever 10, ensuring that more slag scraping rods 11 are involved in scraping out slag at different positions during the movement of the end of the extended cantilever 10.

[0037] Example 2

[0038] Based on Example 1, please refer to Figure 2-Figure 4 , by making the height of the slag scraping rod 11 at the tip of a group of V-shaped ones two to four times the height of the slag scraping rods 11 on both sides, and by having the highest slag scraping rod 11 fit with the groove on the outer side of the driving turntable 8, it is ensured that when the driving turntable 8 and the slag scraping rod 11 are fitted, the driving turntable 8 will only transmit the power with the highest slag scraping rod 11, thereby ensuring the stability of the single transmission. At the same time, the length of the slag scraping rod 11 at the tip is increased, thereby enhancing the strength of turning over the slag when scraping the slag in the molten iron ladle, and making it easier for the slag to be turned over toward the migration support 1.

[0039] Since the contact between the slag scraper rod 11 and the waste slag is prone to corrosion, the slag scraper rod 11 is reduced in strength due to corrosion, and the slag scraper rod 11 will fall into the molten iron ladle after it breaks, increasing the generation of impurities in the molten iron ladle. Therefore, in this embodiment, a plug ball 15 is movably provided in the air exchange channel 601, and an L-shaped groove for placing the plug ball 15 is provided at one end of the main beam 6 to ensure that the plug ball 15 is in the L-shaped groove of the main beam 6 under gravity during the horizontal process, thereby not blocking the air flow in the air exchange channel 601. When the main beam 6 is tilted (for example, when the maximum elevation angle is close to 90 degrees), the plug ball 15 will be blocked by gravity, and a ventilation hole 600 is opened at the end of the main beam 6 above the ventilation hole 601, and the ventilation hole 600 is a fine hole, so that in actual use, the main beam 6 and the extension cantilever 10 can be horizontally scraped by controlling the rotating component 3 and the lifting hydraulic cylinder 4 through the power distribution and control system 2. When the strength of the eroded scraping rod 11 is tested, the protective outer sleeve 13 is first released from the main beam 6 by rotating the driving motor 9, and then the extension cantilever 10 is fully extended under the elastic force of the ejection spring 14, and the power distribution and control system 2 will lift the hydraulic cylinder 4. The pressure cylinder 4 contracts, forcing the main beam 6 to rise, so that the plug ball 15 blocks the air duct 601. Then, the drive motor 9 pulls the protective outer sleeve 13 toward the main beam 6 through the slag stripping rod 11. At this time, the air flow in the inner cavity of the main beam 6 will only overflow through the air exchange hole 600. Combined with the fact that the air exchange hole 600 is a small hole, the strength of the extended cantilever 10 will increase during the movement, and the transmission strength between the drive motor 9 and the slag stripping rod 11 will increase. Combined with the above, the drive motor 9 is in contact with the highest slag stripping rod 11, and the highest slag stripping rod 11 is inserted into the molten iron ladle to the greatest depth. Its erosion is also relatively large. If the slag scraper rod 11 breaks when the driving motor 9 is engaged with the highest slag scraper rod 11, it means that the slag scraper rod 11 of this group has been corroded and the strength is not suitable for use. Therefore, it is recommended to conduct a strength test on the entire group of slag scraper rods 11 or replace the entire group. If the slag scraper rod 11 does not break after the driving turntable 8 and the slag scraper rod 11 come into contact, it means that the slag scraper rod 11 can still be used. Finally, after the inspection is completed, the main beam 6 is placed horizontally through the power distribution and control system 2, and the ball plug 15 will be detached from the air duct 601 to ensure that the resistance of the extended cantilever 10 is reduced during subsequent work.

[0040] Since the scraping rod 11 is broken during the inspection or scraping process, the outside personnel cannot always keep an eye on the scraping rod 11, especially during the scraping process, the outside personnel have no intention of observing the situation of the scraping rod 11. Therefore, in this embodiment, a pneumatic horn 5 connected to the air exchange duct 601 is fixedly installed at one end of the main beam 6, and the pneumatic horn 5 only makes a sound when the external air flow is sucked into the air exchange duct 601, thereby ensuring that the driving turntable 8 and the scraping rod 11 are transmitted during the inspection or work. When the scraping rod 11 is broken, the driving turntable 8 cannot fit with the next group of scraping rods 11, thereby Under the action of the elastic force 14, the slag scraping rod 11 between the driving turntable 8 and the rotating shaft seat 7 will be pressed toward the driving turntable 8 by the elastic force of the ejection spring 14, and the rotation of the driving turntable 8 will press the slag scraping rod 11 toward the rotating shaft seat 7, forcing the slag scraping rod 11 to move repeatedly in the main beam 6, and when the cantilever 10 is extended outward, the main beam 6 will inhale air flow inward through the pneumatic horn 5, thereby making the pneumatic horn 5 emit a sound, and as the sound emitted by the pneumatic horn 5 is located near the migration support 1, it can alert external operators that the slag scraping rod 11 has been broken and needs to be repaired.

[0041] Those skilled in the art will appreciate that the specific structures and processes described in the above detailed embodiments are merely illustrative and non-limiting. Furthermore, those skilled in the art may combine the various technical features described above in various possible ways to create new technical solutions or make other modifications, all of which fall within the scope of the present invention.

Claims

1. A telescopic molten iron slag skimmer, characterized in that: include: A migration support (1), wherein a power distribution and control system (2) and a rotating assembly (3) are fixedly mounted on one side of the surface of the migration support (1); A main beam (6), the main beam (6) is fixedly mounted on the top end of the rotating assembly (3) via a rotating shaft seat (7), the end of the main beam (6) is hinged to the hydraulic rod of the lifting hydraulic cylinder (4), and the cylinder seat of the lifting hydraulic cylinder (4) is fixedly arranged; An extended cantilever (10), one end of the extended cantilever (10) is slidably sleeved in the main beam (6) and abuts against an ejection spring (14) sleeved therein, the other end is exposed from the main beam (6), and a protective outer sleeve belt (13) is installed on the outside, one end of the protective outer sleeve belt (13) is fixedly installed on the front end surface of the main beam (6), and the other end is slidably connected to the side wall of the main beam (6), and the outer side of the protective outer sleeve belt (13) is threadedly connected to a slag scraper rod (11); A driving motor (9) is fixedly mounted on one side of the bottom of the main beam (6), and a driving turntable (8) is fixedly mounted on the output shaft of the driving motor (9), and a groove is provided on the outer side of the driving turntable (8), and the groove matches the slag scraping rod (11). The driving motor (9) drives the driving turntable (8) to rotate, and through the cooperation of the groove on the outer side and the slag scraping rod (11), pulls the protective outer sleeve (13), pushes and pulls the extended cantilever (10), and with the cooperation of the ejection spring (14), realizes that the slag scraping rod (11) flips the waste slag outward and pulls the waste slag outward at the same time.

2. The telescopic molten iron slag skimmer according to claim 1, characterized in that: The elongated cantilever (10) comprises two sections that are bent and connected to each other, and the angle between the two sections is between ninety and one hundred and eighty degrees.

3. The telescopic molten iron slag skimmer according to claim 2, characterized in that: The end section of the extended cantilever (10) is arc-shaped.

4. The telescopic molten iron slag skimmer according to claim 3, characterized in that: The radius of the arc is four to six times the thickness of the elongated cantilever (10).

5. The telescopic molten iron slag skimmer according to claim 1, characterized in that: The side wall of the extended cantilever (10) is provided with a guide groove, and the guide groove is used to limit the protective outer sleeve belt (13); the inner side of the extended cantilever (10) is fixedly installed with an anti-slip wheel (12), and the side wall of the anti-slip wheel (12) is rollingly connected to the outer side of the protective outer sleeve belt (13).

6. The telescopic molten iron slag skimmer according to claim 1, characterized in that: An air exchange passage (601) is provided at one end of the main beam (6), and the air exchange passage (601) is communicated with the inner cavity of the main beam (6).

7. The telescopic molten iron slag skimmer according to claim 6, characterized in that: There are multiple groups of the slag scraping bars (11), and the multiple groups of the slag scraping bars (11) are arranged at equal distances. The number of the slag scraping bars (11) in any group is three to six, and they are arranged in a V shape.

8. The telescopic molten iron slag skimmer according to claim 7, characterized in that: The height of the scraper rod (11) with the V-shaped tip in one group is two to four times the height of the scraper rods (11) on both sides, and the highest scraper rod (11) fits into the groove on the outer side of the driving rotary disc (8).

9. The telescopic molten iron slag skimmer according to claim 8, characterized in that: A plug ball (15) is movably arranged in the ventilation channel (601), an L-shaped groove for placing the plug ball (15) is provided at one end of the main beam (6), and a ventilation hole (600) located above the ventilation channel (601) is opened at the end of the main beam (6).

10. The telescopic molten iron slag skimmer according to claim 9, characterized in that: A pneumatic horn (5) communicating with the ventilation duct (601) is fixedly mounted on one end of the main beam (6), and the pneumatic horn (5) emits a sound when external airflow enters the main beam (6) through the ventilation duct (601).

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